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Патент USA US2106216

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Jan. 25„ T938.
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2,106,216
II‘IONING MACHINE
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Patented Jan. 25, 1938
2,106,216»
UNITED STATES
PATENT OFFICE
2,106,216
HONING MACHINE
Albert M. Johnson, Rockford, Ill., assignor to
Barnes Drill Company, Rockford, Ill., a cor
poration ^ of Illinois
Application January 28, 1'935, Serial No. 3,714
23 Claims. (C1. 51-34)
This invention relates to honing machines for
producing a Very smooth, true ñnish ony the in
ternal cylindrical walls of tubes or cylinders, and
has especial reference to an improved machine
5 of this character particularly adapted to operate
on the internal surfaces of relatively long tubes
disposed in horizontal positions.
Referring to the drawings:
Figure 1 is a front elevational view of a ma
chine embodying the invention.
Fig. 1a is a side view of the spring plunger
mechanism provided for maintaining the recip- 5
rocation controlling mechanism in proper -posi-- ‘ '
'
'I'he‘operation of honing the internal cylindri
cal surface of a tube or cylinder consists gen
erally in simultaneously rotating and reciprocat
ing a honing tool within the same. The nature of
this work is such that the reciprocating move
ment of the tool should be very smooth and with
_ a quick and shockless change of direction at each,
end of the stroke. Hydraulically actuated means,
usually taking the form of a cylinder and piston,
have been found to meet these conditions satis
factorily in machines designed to operate on rela
tively short work pieces. Inthe case of machines
for operatingr on very long work pieces such as
large gun barrels, however, the use of the usual
cylinder and piston reciprocating means is im
practical because of the large amount of space it
requires. With this in view it is one object of
PS bl the invention to provide a honing machine capa
ble of operating on work pieces of great length
Fig. 2 is a fragmentary longitudinal sectional
view of the machine showing parts of the recipro
' cating drive mechanism.
.
10
Fig. 3 is a vertical-sectional View taken approxi
mately in .the plane of line 3-3 of Fig. land
illustrating a. portionof the control mechanism.
` Fig. 4 is a fragmentary sectional view of the
spindle carriage supporting means, the view being 15
taken approximately in _the plane of line 4--4 of
Fig. 2.
I
Fig. 5 is a longitudinal sectional View of the tool
supporting sleeve and illustrating the tool and
a` portion of the spindle in retracted position.
20
Fig. 6 is a view, partly" in section, taken ap
proximately in .the plane of line 6_6 of Fig. 2
and illustrating parts of the spindle carriage re-.
ciprocating mechanism.
Fig. 7 is a, schematic representation of the vari 25
ous electrical and hydraulic circuits and their
which embodies a reciprocating drive means hav
relationship with the mechanical operating and
ing operating characteristics comparable with
control means of the machine.
`
_ -
Generally stated,~ the honing machine as illus
those of hydraulic cylinder and piston means but
' trated herein comprises an elongated frame one 30
30 occupying considerably less space.
Another object of the invention‘is the provision end of which is provided with a horizontally dis
of a novel and efficient means for supporting the posed track or ways upon which a spindle head
spindle carriage upon the Ways in a manner or carriage is movably -supported. Smooth,_
shockless reciprocating movement is imparted to
which entirely eliminates any possibility of ver
(d vl tical movement of the carriage while oiîering a
the spindle carriage by means -of cables attached 3,5.
Y minimum amount of frictional resistance to its
. Another object of the invention is the provision
of unitary manual controlling means which per
mits of easy and convenient control oi thev various
operations of the machine.
A further object of the invention 'is the pro
vision of readily adjustable bearing or sleeve for
supporting the honing tool in retracted position
and for effectively guiding the tool into and out
vof the work piece.
to the carriage and wound in opposite directions
on a drum driven through a speed reducing gearl
horizontal movement.
,
.
Other objects and advantages will be apparent
train by a reversible fluid motor.
As a. means of ` ‘
conserving space, the drum is preferablycarried '
in a housing _attached to one end of the frame and, 40
the fluid motor and driving gears are disposed
'
at one side of the frame adjacent the housing.
The driving cables are disposed within the frame `
and are attached to the underside of the car
riage. The latter is effectually supported and
guided for horizontal movement by four depend'
ing spool shaped rollers. These rollers engage
~ in pairs with the respective members comprising
ferred embodiment of the invention illustrated ' the ways and provide for substantially friction
from the following detailed description of a pre
50 in the accompanying drawings. It is to be under
stood, however, that many changes in form, con
struction and arrangement may be made by
those skilled in the art without departing from
the scope and spirit of the invention as expressed
in the appended claims.
less horizontal movement of the carriage on the
ways.
`
At the end of Athe frame opposite the drum is ‘
provided means for supportinga work piece -in
operative relation to _a tool and spindle carried
_` by the spindle carriage; also'V _a teol_supportin'g 55 v`
2
2,106,216
More specifically described, the machine Vhere
24 maintains the member 21 and its lower bear
ing in place on the stud and rovides for the
vertical adjustment of the mem er for purposesto be described hereinafter. The nut and lower
bearing are enclosed by a cup-shaped cover
member 35 bolted or otherwise attached to the
lower side of member 21. The upper bearings ~
in disclosed comprises an elongated horizontally
of the rollers are protected by oil retaining rings
disposed frame consisting of a main bed I and a
work supporting bed 2 which is bolted or other
wise attached to one end of the main bed. The
main bed is constructed in the form of a rec
36 of conventional design.-
and guiding sleeve and a coolant directing means.
As a further means of conserving space, provi
sion is made for accommodating a coolant set
tling tank, filter and reservoir or sump Within
the portion of the frame devoted to supporting
the work.
’ l
tangular box-like structure with vertically dis
posed side walls 3 and end walls 4. Side walls
15 3 terminate at their upper edges in integrally
formed inwardly extending flanges 5 (Fig. 4) '
which serve as protecting shields for certain of
the parts and equipmentdocated within the bed.
Underlying the flanges of the respective side
20 walls are supported a pair of cylindrical rods 6
extending longitudinally of the bed and forming
tracks or ways for a tool spindle head or car
riage to be described hereinafter and generally
designated by the reference character 1. The
25 rods 6 which are disposed horizontally and paral
lel to each other are rigidly secured to the spac
ing blocks 8 which, in turn, are firmly bolted or
otherwise attached to the walls 3.
The spindle carriage 1 (Figs. 1 and 2) com
30 prises generally a horizontally disposed base
member 9 with depending flanges I0 along each
. side overhanging the sides 3 of the main bed.
At one end of the base member is an upwardly
projecting housing II within which are enclosed
the change speed gears for driving a spindle I2.
The spindle I2.is journaled in centrally disposed
bearings (not shown) formed on the underside
of member 9. The gear housing and rear spindle
bearing 4are closed by a removable cover plate I3
40 which provides access thereto for the inspection
or lubrication of the enclosed parts. A drive
shaft I4 for the gearmechanism extends out
wardly through a bearing I5 formed on the
housing II and is connected by a coupling I6
with the shaft of an electric motor I1 supported '
on the member 9.
Current is supplied to the
motor over conductors forming a flexible cable
I8 which is connected to the motor through a
rigid arm comprising a bushing I9„elbow 20,
50 conduit 2| and outlet box 22.
The spindle .carriage is movably supported on
the ways by four spool shaped rollers 23 (Figs.
2 and 4) which are carried by depending studs
24 set in the underside of the base member 9.
Each roller consists of a hollow, inverted, gen
erally cone shaped bearing member 25 having a
` cylindrical depending extension 26 telescoping
into the hollow interior portion of a second gen
erally cone shaped bearing member 21. The roll
60 ers 23 are supported at their upper and lower
ends by conventional anti-friction bearings each
comprising a series of steel balls 28. ' The balls
comprising the upper bearing are disposed be
tween an inner ball race 29 which abuts against
65 a shoulder 39 formed on the stud 24 and an
outer ball race 3l which abuts against a shoulder
formed on the interior surface of the member 25.
The balls comprising the lower bearing are
disposed between an inner ball race 32 and an
70 outer ball race 33. The ball- race 32 abuts against
a supporting lring 33’ positioned on the stud 24.
The outer ball race 33 is provided with an out
wardly extending shoulder which overhangs the
lower edge of member 21. A lock nut 34 engag
76 ing threads formed on the lower portion of stud
'
The bearing structure, above described, sup
ports the spindle carriage 1 for horizontal re
ciprocating movement on the ways formed by
guide members 6.. The weight of the carriage
is carried by the members 25 whose downwardly
facing inwardly sloping bearing surfaces rest 15
upon the rods 6.
Vertical movement of the car
riage is prevented by the members 21 whose up
wardly facing inwardly sloping bearing surfaces
also engage the rods 6. The members 21 are
adjusted with respect to members 25 so that a 20
clamping effect is exerted on the guide members.
This serves to prevent any vertical movement of
the carriage and likewise to center the carriage
on the ways. The carriage may be leveled up
with respect to the ways by means of shlms 31
disposed between the stud shoulders 30 and the
lower surface of the carriage base member 9.
The motor
I1 - rotates the tool spindle
I2
through the medium of the change speed gear
mechanism.
This mechanism may be of any
suitable type providing a selectively variable gear
train whereby the spindle can be rotated at any
one of a number of diñerent speeds. The spindle is provided at its free end with a socket for
holding a honing tool 38 (Fig. 5) with which
the honing operation is performed.
The honing tool 38 shown in Fig. 5, may be of
any desired construction and generally comprises
a series of elongated circumferentially spaced
honing stones 39 arranged in a suitable retaining
head 40 provided with interiorly disposed adjust
ing means permitting expansion and contraction
of the _stones within a limited range of diameter.
To protect the stones from injurious contact with
the work piece when the tool is being inserted or 45
removed, the head 49 is also provided with a
plurality of circumferentially spaced rigidly se
cured ñber guide members 4I disposed intermedi
ate the honing stones 39. The honing tool as
used in the present construction is provided'with
50
a rearwardly extending tubular shank 42 the free
end of which is detachably secured in the spindle
socket. Knurled gripping members 43 on the
Shank provide means for setting and locking the
stone adjusting means through the medium of
mechanism (not shown) disposed within the
tubular shank. The shank also carries a ser
rated ñber supporting ring 44 which serves as a
support for the tool in its movement toward and
from retracted position, as will be explained here 60
inafter.
The honing operation, as hereinbefore ex
plained, consists in simultaneously rotating `and
reciprocating the honing tool in the work piece.
Rotation of the tool is effected by the spindle 65
rotating motor I 1 and gear train above described.
The reciprocating motion is imparted to the tool
by reciprocating the spindle carriage and tool
supporting spindle. It will be appreciated that
in honing a horizontally disposed cylinder, uni 70
form, smooth reciprocation of the tool is neces
sary to obtain a true surface. Further, th-e
change in direction of motion at each end of the
stroke must be effected quickly and without shock
so that the surface at these points will receive 75
3
2,106,216
substantially the same amount of honing as at
intermediate points. To this end a novel and
effective carriage driving mechanism in the form
of a drum and cable arrangement has -been pro
when desired on cylinders having relatively large
diameters. The upper face of. the bed 2 com
prises a platen which carries a pair of suitable
work holding members 80 which are preferably
vided.
adjustable to accommodate cylinders of different ‘
-
The driving mechanism comprises generally a
spirally grooved drum 45 (Figs. 2 and 6) mounted
in an enclosing housing` 46 and operatively con
nected to the spindle carriage. The drum is in
10 tegral with or rigidly supported on a' shaft 41 dis
posed transversely of the main bed >| the shaft
being suitably journaled in bearings 48 in the
ends of the housing 46. A spur gear 49, integral
with the drum, meshes with a pinion 50 keyed
15 to a shaft 5l extending .through an outwardly
projecting journal member 52 on the housing into
a gear box 53. To the gearbox end of the shaft
5| is keyed a worm gear 54 which meshes with a
. worm 55 keyed to the drive shaft of a rotary fluid
20 motor 56.
.
'
The fluid motor 56 may be of any suitable and
well known type adapted for quick reversal. The
diameters.
To permit the most advantageous
positioning of the work holders 80 with respect
tothe work, -the holders are preferably clamped
to the platen by means of bolts extending through
longitudinally disposed slots therein.
Adjacent the rear end of the bed 2 and at
tached to the top face thereof is an upwardly ex
tending member 8| formed to receive one end of a
cylinder 82 constituting the work piece and to
abut against the same in substantially liquid
tight contact. A duct 8|a (Figi)l formed within
the member 8| provides a passage through which
coolant delivered through the conduit 83 is di
rected into the cylinder 82.
Adjacent the other end of the bed`2 and cen
tered on the face thereof is an upwardly extend
ing longitudinally disposed U-shaped bracket 84
motor is connected to a pressure fluid pump 5'! I (Fig. 1) having flanges 85 at each end for attach
'(Figs. 2 and ‘7) of well known construction
ment to the bed. A The upper end of the member 84
25 through a hydraulic circuit in which a stop valve
is formed to provide ways 86 (Fig. 5) for a tool
58 and a reversing Vvalve 59, to be described later,y
supporting and guide member 81.
are~ interposed. The pressure fluid pump is driven
81 ‘comprises generally a base portion 88 formed '
by an electric motor 60 through an over-load re
to ride on the ways86 and having a depending
portion overhanging the Ways and terminating
lease mechanism 6|. Thenñuid motor, pump and
30 driving motor are supported on a sub-base 62 vad
The member
in teeth constituting a downwardly facing rack i»
jacent and. preferably attached to one side of the 89. The member 81 is also provided with up
main bed I. A surplus ñuid sump 63 shown in wardly extending clamping members 90 designed
_ to hold a tool guiding sleeve 9|. The sleeve is
Fig. 7 may be located within the sub-base.
The above described drive mechanism serves preferably in the form of a hollow tube having
35 to drive the cable drum 45 in either direction as peripheral shoulders 92 designed to fit in the
required and, through its connection with the clamping members. One end of the sleeve is bev
eled so` that an inwardly sloping surface is pre
spindle carriage, to impart reciprocatory move
ments to the latter. Said connection comprises sented to the work piece 82. The sleeve is moved
two ñexible cables, 64 and 65, attached to the into abutment with and retracted from the work
piece by means of a manually operable crank §23> 40
40 drum so that when the drum rotates in one direc
tion, one cable is wound up and the other cable which controls a pinion 94 engaging the rack 09.
is payed out. One end of the cable 64 is anchored For locking the sleeve in place, a manually oper
tothe drum at 66 and the other end is anchored »ated locking screw 95 is provided.
It will be further noted that the work sup'
toa lug 61 ‘formed on the underside of the
spindle carriage 1 as shown in Fig. 2. One end porting bed 2 provides a housing within which the
of cable 65 is anchored to the drum at'68 and the coolant storage and filtering equipment may be
other end, after passing over >a sheave 69 is conveniently disposed as shown in. Fig. 1. The
anchored to the lug 61 bymeans of a threaded coolant equipment includes a settling tank 96 lto
rod 10 provided for the purpose of adjusting the vwhich coolant is returned from the work piece
through a screened aperture 91 in the face of the
50 tension of the cable. The sheave 69 is provided
with a shaft 1| supported in a bearing formed bed. Coolant is discharged from the tank 96
in one end of a lever 12 which is pivoted at 13 onto .a removable filter 98 which removes dirt or
on a bracket 1li-bolted or otherwise attached to other foreign matter and permits the coolant to
the end wall of main bed |. Pivotally attached . drain into a reservoir or sump 99. A pump |00,
driven by an electric motor |0| draws the coolant
to the other end of lever 12 is a vmember-'I5 ex
tending substantially horizontally through an
aperture in the channel member -16 which is
rigidly attached tothe sides of the »main bed.' A
compression spring 11 bearing at _one end upon
60
the inner face of member’16 and at the other
end upon a retaining ring 18 secured to member
15 by a nut 19, exerts its force on lever 12 tend
ing to rotate the lever on its pivot and increase
the distance between the sheave- 69 and drum 45. ‘
from the reservoir and delivers it under pressure
to the work through the conduit 83 and coolant
directing means Sla.
`
-
Ñ
'
Having in mind the' construction of the various
working partsof the honing machine above de-scribed, the means for controlling the operations
of the machine will now be explained. The vari
ous manual control members provided for this
purpose are grouped for convenient handling at
'I'his serves to take up any slack in cable 65 and va point near the center or" and on the front of
maintains the cable under uniform tension. It
also provides a cushioning eiîect which tends to
lessen or substantially eliminate any shock in
cident to the change in the direction of move
70 ment ofthe spindle carriage.
'
Referring now toFig. 1, it will be noted that
>thesupporting frame as shown in Fig. 1. These j
include a unitary manually operated means for
startingv and stopping the' spindle driving motor
|1 and the iiuid motor 56. This control means asI
shown herein comprises a shaft |02 (Fig. 3)- dis
posed transversely of the axis of> the main bed of
`the work supporting bed 2 is offset vertically with ' the machine and journaled in spaced bearing
respect to the main bed I. This is to provide suff
members |03 threaded into opposite ends of a
ñcient clearance for the tube or cylinder beingV cylindrical passage through a sleeve member |04.
75 operated on and permits the machine to be used '
The shaft is lield in normal position by opposed
4
2,106,216
compression springs |05 which bear on the inner
faces of the respective members |03 and on>
spaced collars |06 fast on the shaft. Stop collars
inwardly extending lug carried by the depending
|01, also fast on the shaft, are adapted to engage
|26 carrie-d by the frame of the machine. Recip
rocatory movement of the shaft |02 and exten
sion member |22 rocks the control member on
the pivot |25n thereby causing the arm |26a of
Ul the outer faces of the respective membersY |03 and
thereby limit the extent of longitudinal motion of
the shaft.
L
,The sleeve member |04 comprises a cylindrical
body portion journaled for rotation in a bearing
|08 extending through an aperture in and rigidly
attached to wall 3 of the main bed I. The body
portion terminates in a flange -|09 providing a
shoulder which‘abuts against the outer rim of the
bearing. Upon the outer face of the flange |09 is
formed an outwardly extending rib ||0 which
carries. a bearing stud ||| in a position substan
tially perpendicular to the axis of the member
|04. The upper portion of the rib4 |||J defines
two upwardly facing, arcuate segments centered
on the axis of the stud |||. The rearmost seg
ment is formed on a slightly longer radius than
the forward segment and thus presents a shoulder
||2 which serves as a stop for limiting the move
ment of and defining a neutral position for a
manual control lever ||3.
'
The control lever | I3 (Fig. 3) comprises a base
member ||4 having a transversely disposed bear
ing member ||5 adapted to receive the bearing
stud ||| upon which the lever is enabled to rock
in a plane transversely of the longitudinal axis of
the machine bed. A depending arm ||6 integral
with the member ||4 defines two cam surfaces
adapted to engage spaced stop collars | |'| fast on
the shaft |02. Carried on the upwardly facing
end of the member ||4 and offset slightly there
from is a tubular extension member | I8 and a
grip member ||9. Within these members is dis
posed a stop pin |20 normally held in engagement
with the arcuate segments by a compression
spring |2|. Manipulation of the grip member
| I9 relieves the spring tension thus withdrawing
the pin |20 and permitting the movement of the
control lever past the neutral point defined by the
shoulder ||2. Thus, when the pin has been
45 withdrawn from its _stop position, the lever ||3
arm of the control member. The control mem
ber is pivotally supported at |25a on a bracket
the control member to engage one or the other
of the ’switch operating push buttons |21 and'
|28. When the shaft | 02 is shifted- to the left
as viewed in Fig. 3, the arm |26a will engage
the “start” push button |21. Shifting the shaft
|02 to the right brings the arm |26 into engage
ment with -the “stop” push button |28. These
push buttons control circuits for the spindle motor 15
I7 as shown diagrammatically in Fig. 7 and ae-‘
cordingly, the motor may be started by moving
lever | I3 toward the machine and may be stopped '
by moving the lever away from the machine. As
a means of guar-ding against the accidental start
20
ing of the motor, the shoulder || 2 prevents the
movement of the lever past the neutral positiony
without first releasing the stop pin.
The second controlling function of the control'
mechanism above described is that of starting
and stopping the fluid motor 56. This is accom-,
plished through the medium of a link mecha
nism shown in Figs. 2, 3, and '7 which is actuated
by the rotation of the sleeve member |04 when
the lever ||3 is rocked in a plane parallel with
the longitudinal axis of the machine. This mech
anism as shown comprises a link member |29
(Fig. 2) pivotally attached at one end by a pin
|30 to an upwardly extending arm |3| integrally
formed with a split collar |32 clamped on the
sleeve |04. The link is disposed within the main
bed | of the machine and its other end is piv
otally attached to one arm of a bell crank lever
|33. The lever |33 is pivotally supported to turn
on a vertical axis on a transverse member |34
rigi-dly supported on the sides of frame I, and
the other arm of the lever is attached to a
transversely disposed link |35 (Fig. 7) which
actuates the valve 58. The valve 58 which is
preferably supported in a housing |36 carried on
the-frame of the pump 5l consists generally of
a cylinder |3'! within which a piston |38 recipro
cates under control of the mechanism previously
described. Pressure fluid is delivered by the
pump 5l to the -valvethrough a duct |39 having 50
may be moved toward the right as viewed in Fig.
3, thereby causing the arm | I6 to move shaft |02
to the left against the force o'f the left hand
spring |05. Movement of .the lever in the op
50 posite direction 4results in the movement of the
shaft |02 to the right, the limit of movement in . two branches terminating in ports at each end
either direction being governed by the position
of the valve. A duct |40 connects the stop valve
ing of the stop collars |01. Moreover, lever 58 with the reversing valve 59 and a duct |4|
movement in either direction results in the com
connects the valve with a return duct |42 leading
55 pression of one or the other of the springs |05 to the sump 63.
which tends to maintain the shaft |02 in a posi
To start the fluid motor and, incidentally, the
tion corresponding to the neutral position of the
lever ||3.
Accordingly, the lever is automati
cally returned to neutral position after each op
60 eration as soon as the operator releases the same.
' The actuation of the control lever ||3 as above
described reciprocates the shaft |02 and thereby
effects the starting and stopping of _the spindle
driving motor I1. This shaft |02 is operatively
65 attached to an extension member |22 journaled ,
in a bearing |23 which extends through an aper
ture in and is rigidly attached to the rear wall
3 of the main bed |. The other end of the ex
tension member |22 is operatively connected with
70 a switch controlling member |25 adapted to actu
ate switch operatingàpush buttons. In the pres
ent instance, the operative connection between
the extension member |22`and the member |25
is provided by a peripheral groove |24 in one
end of the extension member which engages with
reciprocation `of the spindle carriage, control
lever ||3 is rocked in a counter-clockwise direc
tion as viewed in Fig. l. Arm |_3| follows this
movement and shifts link |29 to the left (Fig. 2)
and the link, through the medium of the bell
vcrank |33 and link' |35, effects the movement of
the piston |38 (Fig. 7) toa position in which the
ports for the lower branch of fluid pressure duct
|39 and the discharge duct |4| are closed. Pres
sure fluid is accordingly delivered through the
duct |40 to reversing valve 59 and thence to
the fluid motor. When lever ||3 is rockedl in
a clockwise direction, the motion of the link
mechanism is reversed'and piston |38 is shifted
to a position in 'which it covers the portsA for
the upper branch of duct |39 and for duct |40.
Pressure fluid is thereby delivered through the
lower branch of duct |39 and ducts |4| and |42 75
5
2,106,216
to the sump 63 and the operation of the motor
56 is stopped.
`
'I’he two positions of the control lever are de
fined by a yieldable detent device provided on the
sleeve |04. 'I'his mechanism as shown herein
comprises-a ball |43 which together with a com
pression spring |44 is disposed within a recep
tacle formed in an outwardly extending projec
tion |45 on the flange |09. The spring urges
10 the ball into depressions |46 provided in the
shoulder of the bearing member |08 at the points
corresponding to the start and stop position of
the lever. This arrangement facilitates the cor
rect positioning of the lever.
. '
Additional manual‘control elements provided
include a start-stop push button switch |41 (Figs.
l and 7) for controlling the operation of the
pump motor 60. This switch is located on the
side of the main bed | adjacent the control lever
20 ||3. Also included is a manual control of the
reciprocating movement of the spindle carriage,
provided by a lever |48 pivotally mounted on the
side of the work supporting bed 2 and connected
by a link and removable pin with a stop bar
25 |49 to be described later. Further control of
spindle carriage reciprocation is provided by a
lever |50 also attached to the stop bar |49 and
adapted to rotate the same for purposes to be
described hereinafter. ‘
30
While the reciprocating movement of the spin
dle carriage may be controlled manually as above
the movement of the spindle carriage will again
be reversed. The function of the pawl stop is
to define the limit of the stroke toward the re
tracted position of the tool, and, once the ma
chine is started, the carriage will be reciprocated
within the limits defined by this stop and mem
ber |51. -
~
When the honing tool -is to be withdrawn
from the work, the manually operated control
lever |50 is pulled forward, thereby rotating the 10
stop bar .and moving the pawl stop |59 out of
the path of lug |60. The carriage will then be
moved back to its retracted position with the tool
entirely withdrawn from the work and resting
in the supporting sleeve 81.
'I'he release of the
15
lever |50 will permit the stop bar and pawl stop » -
to bc moved back into their normahpositions.
under the influence of spring operated plungers
|6| which bear against the ends of a cross mem
ber |6|~1 fast on~ the stop bar |49 as shown' in 20
Fig. 1a.
'
’
It will be noted also, that the manual control
levèr |48 is adapted for connection to the stop
bar by means of a link |48EL and pin |48b. This
connection is required only when a new work
piece is being set up in the machine and enables
the operator to manually control the extent of
tool movement during the setting up process.
During the operating period of the machine, the
pin |48h may be withdrawn so that the lever |48 30
will not be required to follow the movements of
the Stop bal’.
stated; it is normally controlled automatically.
The operation of the reversing valve 59 under,
The mechanism provided for this purpose in the
control of the stop bar will be most readily seen
present instance is generally similar to that dis
35 closed in `United States Patent No. 1,945,044, by referring to Fig. 7 of the drawings. The valve 35
granted January 30, 1934, to A. M. Johnson and- operating link |52 is provided with two piston
enlargements |62 and |63' forireciproca'tion in the
W. M. Fairbairn and comprises a cam plate |5|
valve cylinder. With the stop bar shifted to the
(Fig. ’1) and `link |52 for actuating the revers
ing valve 59. The cam plate is disposed in a left, as shown, the pistons |62 and |63 will de
ñne an annular chamber connecting the pressure
40 housing |53 supported on a bracket |54 at
tached to the main bed | '(Fig. 1). The link ' fluid duct |40 with a duct |64 leading to» one side
extends from the cam plate to the valve 59 which of the motor 56. At the same time, the upper
surface of the piston |63 will deflnea cylindri
is preferably enclosed in the housing |36 sup
cal chamber connecting a duct |65 leading from
ported on the frame of the pump 51. The cam
45 plate is actuated by the stop bar |49 which is ' the other side of the motor with a discharge duct
supported on'the frame :Dy bearing members |55 |65a which is lconnected to the main discharge
and |56, the latter of which is adjustable. The duct |42. Pressure iluid supplied to the motor
stop bar is providedwith a front stop member through the hydraulic circuit l‘íbove described
|51, a rear stop member |58 and a pawl stop will cause the motor lto rotate its shaft in the
direction required to drive the spindle carriage
50 member |59, each of which is adjustable with
50
_
respect to its position on the bar. 'I‘he front and to retracted position.
As the spindle carriage approaches retracted
rear stop members are preferably in the form
of disk shaped collars and are adapted to» engage position, the lug |60 will engage the stop mem
a lug |60 depending from the spindle carriage 1. ber |59 therebyl forcing the stop bar and cam
The pawl stop is designed to operatively engage plate to the right. Link |52, accordingly, will
shift and position the pistons |62 and |63 so that
the lug |60 only when contact is made there
with by the spindle carriage moving toward the duct |65 will be connected with pressure duct |40
retracted positions.
'
K
and duct |64 will be connected with discharge
With the spindle carriage in the retracted po
duct I 42. This will cause motor 56 to rotate its
60 sition shown in Fig. 1 of the drawings, the stop shaft so as to drive the spindle carriage in the 60
"
«
'
bar |49 will be in its extreme right position opposite direction.
and the reversing valve will be set Iso that the
'I'he spindle carriage of the machine disclosed
cable drum will be rotated in the proper direc
tion for moving the spindle carriage toward the
work. As the carriage moves, lug |60 will pass
over the pawl stop without effect and, on reach
ing a position defined as one limit of the stroke
by the member |51,’will engage that member and
force the stop bar to the left. In this position of
the stop bar, the reversinggvalve will be actuated
to reverse the direction of rotation ofthe cable
drum with a consequent reversal of direction of
motion of the~ spindle carriage. When the lug
|60 now engages the pawl stop, the stop bar
will be forced to the right and the direction of
herein is required to operate through a relatively
long stroke in operating on long cylinders. Since
the spindle driving motor is mounted on the car 65
riage, it too will reciprocate which makes it nec
essary to provide a very flexible and durable
connection over which to supply electric current
to the motor. 'I'his connection takes the form,
in the present instance, of the flexible cable |8
-adapted to be wound up _on the drum 45 adjacent
the cable 64 as the spindle carriage is moved to
ward the retracted position. The cable I8 is
anchored to the drum as atl |66 ‘and the three
conductors enclosed therein are respectively con- 75-
6
2,106,216
contact
fluid motor which thereupon rotates the cable
rings |61 (Figs. 2 and 6). The rings are sup
ported coaxially of the drum by an insulating
plate |68 (Fig. 6) rigidly attached at one end of
the drum. A set of brushes |69 engaging the
rings provide electrical contact with the con
drum in a direction to move the spindle carriage
toward the work. As the tool enters the work,
the lug |60 on the spindle carriage passes over
the pawl stop |59 which then becomes effective
to limit the rearward movement of the spindle
carriage. The tool is advanced into the work
until the lug |60 on the spindle carriage engages
nected with concentrically disposed
ductors of a feed cable |10 which terminates at
the switching contacts to be described herein
, the front stop member |51 and shifts the stop
after.
The electrical circuits of the spindle motor |1, rod |49 to the left. The stop rod, through the 10
10
coolant pump motor |0I and pressure ñuid pump medium of the cam plate |51 actuates the re
motor 60 are shown schematically in Fig. 7 of versing valve 59 as hereinbefore described, there
the drawings. The spindle motor |1 and coolant by reversing the direction of the fluid motor 56.
pump motor |0| are connected in multiple, and The fluid motor, accordingly, rotates the cable
drum in a directionto move the spindle car 15
the individual conductors extending thereto are
connected to respective terminals of the switch riage away from the work. The limit of return
| 1|. The conductors |12 of the incoming power movement of the carriage is now defined by the
line are connected by branch conductors |13 paw] stop |59 which is engaged by the lug |69
with corresponding terminals of the switch. A on the spindle carriage before the tool 38 is with
drawn from the work. The stop bar is thereby 20
20 solenoid |14 provided with a series of switch
shifted to the right and actuates the reversing
closing members |15 connects the respective con
ductors when the solenoid is energized. The valve in the manner hereinbefore described to
solenoid is further provided with a switch closing again effect the movement of the tool into the
member |16 for completing a locking circuit for work. Since the spindle motor |1 is rotating the
itself. The circuit of the solenoid includes a spindle, the tool is, accordingly, reciprocated 25
normally open switch- |11 closed by a contact and rotated within the tube being worked upon.
member actuated by the push button |21. This The_honing stones carried by the tool are thus .
enabled to produce a smooth true surface on the
circuit also includes a normally closed switch |18
l
closed by a contact member actuated by push interior of the tube.
When the honing operation is finished, the 30
button |28.
attendant will cause the honing tool to be with
Referring backl to the description of the man
ual control mechanism, it will be recalled that the drawn from the work by‘pulling the lever |50
'inward and outward movement of the control forward to move the pawl stop |59 out of the
lever ||3 effected the operation of push buttons path of the lug |50 on the spindle carriage. The
spindle carriage will accordingly return to its
35 |21 and |28, respectively. The actuation of the
push button |21 results in the closure through retracted position and, when it has reached this
position, the attendant will stop further recip
s'wítch |11 of an energizing circuit for the sole
noid |14 which thereupon closes the switches |15 rocating movement by rotating lever ||3 in a
to connect motors |1 and | 0| to the power- line clockwise direction. The actuation of the lever
||3 in this manner eiTects the operation of the 40
40 and switch |16 to complete the solenoid locking
stop
valve 58 which stops the fluid motor 56 and,
circuit. The actuation of button |28 opens the
incidentally, the carriage driving cable drum.
switch |18 to interrupt the solenoid locking cir
cuit and the solenoid becomes deenergized and ~The spindle and coolant pump motors may be
opens switches |15 and |16. The motors are thus ' stopped at this time by pulling lever ||3 forward
45
stlarted and stopped under control of the lever
|
3.
`
-
The oil pump motor 60 is connected with
branch conductors |19 leading to the power line
|12 by switches |80 operated under control of a
50 solenoid |8|. This solenoid is provided with a
circuit similar to that above described for sole
noid 114. The circuit is initially closed by a push
button operated start switch |82 and the sole
noid locks over a circuit including its own switch
|83. The solenoid is deenergized and the pump
motor stopped incident to the opening of push
button operated stop switch |84.
In operating the machine herein described, the
thereby operating the stop push button |28 which 45
controls the motor circuits. Scratching or
otherwise marring the work as the tool is re
tracted therefrom is prevented by the tool guid
ing sleeve 9| which maintains the tool in proper
alinement with the work. The fiber supporting 50
ring 44, which ñts snugly into the sleeve 9| sup
ports the weight of the tool and serves as a guide
for the same until the tool is Withdrawn suf
ñciently so that the fiber members 4| engage the
wall of the sleeve and take over the support and 55
guidance of the tool.
It will be apparent from the foregoing that the
present invention provides a novel arrangement
of mechanisms constituting an improved honing
cylinder or tube 82 to be operated on is placed
in the work holders and adjusted to the proper -machine of minimum dimensions consistentwith
position with respect to the tool 38. The tool -the character of the tubes or cylinders to be
supporting sleeve 9| is then moved into tight worked on, which is smooth and shockless in op
abutment with the work and is clamped in this eration, is easily and conveniently controlled,
position by means >of the clamp screw 95. ' After
65 the stop members |51, |58 and |59 have been ap
propriately positioned on the stop bar, the pres
sure fluid pump motor 60 is started by the
actuation of the start push` button |82. The
spindle drive motor |1 and coolant pump motor
|0| are then started by momentarily pushing the
manual control lever | I3 forward, that is, toward
the machine to actuate the push button |21. At
the same time, the lever | I3 may be rotated in a
counter-clockwise direction thereby operating the
75 piston valve |38 to direct pressure fluid to the
co
and which is efficient in use.
I claim as my invention:
l. A honing machine comprising, in combina
tion, an elongated horizontally disposed frame,
a carriage mounted on one end of the frame for
relative movement longitudinally thereof, a spin
dle rotatably supported on the carriage, work
holding means supported on the other end of said
frame for holding the Work coaxially with the
spindle, a honing tool attached to said spindle
and adapted to enter the work, a drum supported
at said one end of the frame, a sheave supported
65
2,106,216
at a point intermediate the two ends of the
~frame, a cable anchored at one end to said drum
and at the other end to said carriage and run-_
ning over said sheave, a second cable anchored
Ul at one end to said drum and at the other end to
said carriage, said second cable being wound
on the drum«in such manner that it is paid out
when said ñrst mentioned cable is being wound
on the drum, and means ~for rotating said drum.
10
2. A honing machine comprising, in combina
tion, a horizontally disposed frame, work sup
porting means on one end of the frame, a spindle
supporting carriage mounted on the other end
of the frame for movement longitudinally there
of, a cable drum supported at one end of the
frame, a cable passing over said drum and-at
tached. to said carriage, means for rotating said
drum to alternately reel up and pay out said cable
to reciprocate said carriage on said frame, and
20 yieldable means operatively associated with said
cable for absorbing the shock incidental to the
,reversal of the direction of carriage movement.
3. A honing machine comprising, in combina
' 7~
a lever pivotally supported intermediate the ends
of the bed, a sheave supported on one arm of
said lever, a spring member attached to the
other arm of the lever and adapted to exert a
force tending to move said one arm of the lever Gl
and said sheave farther from said drum,v and a
second cable adjustably attached tothe car
riage, passing over said sheave and adapted to
be wound on said drum incident to its rotation
in a counter-clockwise direction to move 'the 10
carriage toward said sheave.
`
7 _ A mechanism for reciprocating the tool sup
porting carriage on the bed of a honing machine
comprising, in combination, cables attached to the
carriage, a drum adapted to alternately Wind up 15
one ofthe cables and unwind the other of the
cables, a reversible rotary' ñuid motor drivingly '
connected to said drum, a pressure fluid pump for
supplying pressure fluid to said motor, a valve
interposed between said pump and said motor for 20
regulating the delivery of pressure fluid to the
motor to control its direction of rotation, andA
carriage actuated means for controlling said
tion, a frame, Work holding means on one ‘end
25 of said frame, a spindle supporting carriagev
8. A honing machine comprising, in combina
mounted on the other end of said frame, a cable
tion, an‘ elongated frame, av carriage mounted
drum supported _at said other 'en_d of the frame, cn said frame for relative movement longitudinal
a sheave supported intermediate the ends of the ly thereof. a spindle journaled on said carriage
frame, a cable connected to said carriage and and movable therewith, a motor supported on said
30 passing over said sheave and said drum, a sec
carriage and having a driving connection with
valve.
_
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'
ond cable connected to said carriage and passing
over said drum, said cables being alternately
wound up and paidout incidental to the drum ro
supporting a piece of work to be operated on, a
tating in one direction or the other to reciprocate
supporting means and having a shank secured to
35 the spindle carriage, and a fluid motor for ro
tating said drum in either direction. '
‘
4. A honing machine comprising, 1n combina
tion, a frame, a carriage mounted on the frame
for relative movement longitudinally thereof, a
40 spindle journaled on the carriage and movable
therewith, means at one end of the frame for
supporting a tube to be worked on concentrically
honing tool adapted to enter the Work on said
said spindle, means for reciprocating the carriage
including a cable drumÍ rotated alternately in
clockwise and counter-clockwise directions, a cur
rent supplying cable comprising electrical con
ductors connected to said motor and adapted to
be wound on the cable drum incident to its‘ro 40
tating in the direction-for moving the carriage
of the axis of the spindle, a honing tool adapted
toward the drum, a plurality of annular members
terminating the conductors of said cable and sup
to enter the tube and having a shank secured
45 to said spindle, means for rotating the-spindle,
ported on one cnd‘of the drum concentrically
with the axis of the drum, and means for connect
and means for reciprocating the spindle includ
ing a cable, a drum for alternately reeling up
and payingV out the cable, a yieldably supported
sheave for taking up the slack in the cable, and
50 means for alternately rotating said drum in op
posite directions.
30
said spindle, means at one end of the frame for
ing said conductors with a source of current in
cluding a plurality of stationarily supported
brushes engaging said annular members.
.
-9. In a honing machine, the combination of a
reciprocating carriage, a tool supporting spindle
rotatably mountedon'said carriage, means for
5. A mechanism for reciprocating the tool sup- ' supporting work in position for operation thereon
porting carriage >of a machine tool comprising,_
in combination, a _cable drum, a motor for driv
55 ing said drum in clockwise or counter-clockwise
directions, va cable attached to the carriage and
adapted to be wound on the drum incident to its
rotation in a clockwise direction and to move the
by the tool, atool supporting and guiding mem
ber having an opening adapted to receive the tool,
means providing-ways for supportingsaid guiding
member, means 'for moving said member toward
and from said work including a manually rotatable
pinion journaled on said ways anda rack formed
carriage >toward said drum, a yieldably supported Y' on the member, and manually operable means on
said member for preventing movement thereof.
60
60 sheave having its axis paralleliwith. the axis of
said drum and spaced'therefrom, and a second
l0. In a honing machine, the combination of a -
l 'cable attached to the carriage-and passing over
reciprocating carriage, a tool supporting spindle
said sheave ~to said drum and adapted to be
rotatably mounted on said carriage and movable
therewith, means for supporting. work in position
for operation thereon bythe tool,»a member hav
,wound on the drum incident to its rotation in a
65 counter-clockwise direction to move the carriage
away from the drum.
'
ing an opening >adapted to receive and support the
6. A mechanism for reciprocating a tool sup ' tool adjacent‘the work and to guide the same into
porting v,carriage on the bed of a machine tool the work, means supporting sa-id member for
comprising, in combination, a cable drum sup
70 ported on one end of the' bed, a fluid motor for
rotating said drum alternately vin clockwise 'and
counter-clockwise direction, a cable attached to
the carriage and aiiapted to be wound on the
_ drum incident to- its rotation in a clockwise di
75 rection to move the carriage toward said drum,
movement longitudinally of said spindle, means
for moving said' member into abutment withy the 70
work including the pinion journaledin said sup- '
porting means and a rack carried by the member,
and means for locking said member in position to
prevent its movement away from the work.
.11. In a honing machine, the combination of a 75
8
2,106,216
bed, a carriage mounted on the bed for move
ment longitudinally thereof, a motor for recipro
cating said carriage, a tool supporting spindle
journaled on said carriage and movable therewith,
a motor for rotating said spindle, a manual con
trol lever supported on said bed for movement in
two planes relative to the axis of the bed, means
actuated responsive to the movement of said lever
through an arc in a plane parallel to the axis of
the bed for controlling the operation of said car
riage reciprocating motor, and means actuated in
response to the movement of said lever through
an arc in a plane perpendicular to the axis of
of the sleeve incident to the movement of the
lever in a plane transversely of the axis of _the
sleeve, and an arm projecting downwardly from
said lever between the spaced collars on the outer
end of the shaft, operative responsive to the
movement of the lever on its supporting bearing
for reciprocating the shaft in opposition to the
force exerted by said spring members.
16. In a honing machine, in combination, a
frame, a tool spindle carriage movably supported 10
on said frame, and means for rapidly reciprocat
ing said carriage with substantially instantane
ous, shockless reversal at each end of its stroke,
the bed for controlling said spindle rotating motor.
said means comprising a rotary fluid motor, a
l2. In a honing machine, the combination of a
frame, a carriage mounted on said frame for re
quick reverse valve mechanism controlling the
operation of the motor, a cable drum driven by
the motor, a flexible cable connecting the drum
ciprocating movement thereon, a rotatable tool
supporting spindle journaled on said carriage, a
manual control lever supported on said frame for
movement in two intersecting planes, means actu
ated in response to the movement of said lever
through an arc in one plane for controlling the
rotation of said tool supporting spindle, and
means actuated in response to the movement of
said lever through an arc in the _other plane
for controlling the reciprocation of said carriage.
13. A manual controlling mechanism for a ma
chine tool comprising, in combination, a sleeve
rotatably mounted on the frame of the tool, a
shaft extending through said sleeve transversely
of the frame, means in said sleeve tending to
maintain said shaft in an intermediate position
in the sleeve, a lever supported on said sleeve
for movement in a plane perpendicular to the
aids of the sleeve to rotate the sleeve and for
movement in a plane parallel to the axis of the
sleeve to reciprocate said shaft against the ac
tion of said maintaining means, and machine
controlling means actuated in response to the
40 movements of said sleeve and said shaft.
14. A manual controlling mechanism for a
machine tool comprising, in combination, a sleeve
rotatably supported on the frame of the tool, a
and the carriage, and means controlled by the
carriage for operating said valve mechanism.
1'7. In a honing machine, in combination, a 20
frame, ways carried by the frame, a tool spindle
carriage supported for reciprocation on said Ways,
and means for rapidly reciprocating said car
riage on said ways with substantially instan
taneous, shockless reversal at the end of each of 25
its strokes, said means comprising a ñuid motor,
a pressure fluid pump, and an electric motor for
driving the pump, _a quick reverse valve mecha
nism interposed between the pump and the fluid
motor for controlling the direction of rotation of 30
the motor, a rotary element driven alternately in
opposite directions by the fluid motor, flexible
driving means operatively connecting said ele
ment with the spindle carriage, and means con
trolled by the spindle carriage for actuating said
valve mechanism.
l
18. In a honing machine, in combination, a
reciprocating carriage, a spindle journaled at
one end on said carriage and carrying a honing
tool at its other end, means for supporting work
to be operated on by said tool, means for recip
rocating said carriage to advance the tool into
operative engagement with the work and to with
shaft extending through said sleeve and sup
draw the tool from the work, and means for
ported for reciprocation therein, a manual con
trol'lever mounted on said sleeve for rotating the
supporting the tool in withdrawn position and
for guiding the tool into the work, said tool sup
porting means including an elongated member
disposed substantially parallel to the axis of the
tool spindle adjacent the tool supporting end
sleeve and reciprocating said shaft, and machine
controlling means_independently actuated by said
sleeve and said shaft incidental to the rotation
and reciprocation thereof, respectively, said con
trolling means including a first electrical switch
actuated in response to the movement of the
shaft in one direction, a second electrical switch
actuated lin response to the movement of the
shaft in the other direction and valve mecha
nism actuated in response to the rotation of said
sleeve.
l5. A manual control mechanism for a ma
chine tool comprising, in combination, a tubular
sleeve rotatably supported on the frame of the
machine. an outwardly extending projection on
one end of said sleeve, a collar having an up
wardly extending arm rigidly clamped on the
other end of the Sleeve, a valve controlling link
pivoted on said. arm, a shaft extending through
the sleeve and having opposed spring members
engaging spaced collars on the sleeve for posi
tioning thev shaft transversely with respect to the
sleeve, spaced collars fast on the outer endof
said shaft, a switch controlling member engaged
by 'Itheother end of said shaft, a manual con
trol lever supported on a bearing carried by said
projection on the sleeve, said bearing being dis
posed eccentrically with respect to the axis of
the sleeve to provide leverage for the rotation
thereof, means supporting said member for end- a
wise movement relative to the spindle, manually
operable means for moving said member in either '
direction to adjustA its position relative to the
work, and means-for locking the member in ad- '
justed position.
A
'n Ll
19. In a machine for dressing cylindrical sur
faces, in combination, a frame, a cylindrical abra
sive tool, a support on said frame for said tool,
a support on said_frame for work to be operated
on by said tool, a cable drum supported at one- l‘
end of the frame, a sheave >supported on said
frame at a point spaced substantially from said
one end thereof, a cable connected to one of said
supports and passing over `said sheave and said
drum, a second cable connected to said one sup
port and passing over said drum, said cables be
ing alternately wound up and paid out incidental
`to the drum rotating in one direction or the
f’ other to reciprocate said one'Y support relative to ,_
the other sup-port, and a fluid motor for rotating
said drum in either direction.
20. In a machine for dressing cylindrical sur
faces, in combination, a cylindrical abrasive tool,
a support on said frame for said tool, a support
on said frame for, work to be operated on‘by said 75
2,106,216
9
tool, and means for reciprocating one of said sup
ports relative to the other support with substan
tially shockless reversal at each end of its stroke,
said means comprising a rotary fluid motor, a
quick reverse valve mechanism controlling the
operation of the motor, a cable drum driven by
the motor, a ilexiblecable connecting the drum
and the reciprocating support, and means con
eating support and extending to said drum, said
cables being pulled alternately in opposite direc
the reciprocating support for controlling said
tions for winding up and paying out said cable
tions in response to the rotations of said drum,
and means included in said mechanism for cush
ioning the shock incident to the reversal of the
direction of rotatio-nof said drum.
23. In a honing machine, the combination of
an elongated frame, a carriage mounted on said
trolled by the reciprocating support for operating- frame for movement longitudinally thereof, a
10 said valve mechanism.
'
_
spindle journaled at one end on said carriage and 10
21. A mechanism for effecting relative recipro
movable therewith, a honing tool secured to the
catory movement between the Work support and other end of said spindle, supporting means for
the tool support of a machine for dressing cy
holding work to be operated on by said tool,
lindrical surfaces comprising, in combination, ca
15 bles attached to one of said supports, a drum means for reciprocating said carriage to traverse
the tool across the Work, a spindle driving motor k15
adapted to alternately wind up one of the cables on. said carriage for rotating the spindle and tool
and unwind the other cable, a reversible rotary to cause the tool to operate on the work, and
ñuid motor drivingly connected to said drum, a means `for supplying operating -current to said
pressure iluid pump for supplying pressure iluid
20 to said motor, a valve interposed between said motor while said carriage is reciprocating _com
prising a current supply cable including a plu 20
pump and said motor for regulating the delivery rality of electrical conductors connected to said
of pressure ñuid to the motor to control its direc
motor, a cable drum supported at one end of said
tion of rotation, and control means actuated by . frame adapted to be rotated in opposite direc
25
valve.
'
22. The combination in a machine tool having
a Work support and a tool support, of means for
reciprocating one of said supports relative to the
other support with substantially instantaneous,
to maintain the cable taut while the carriage is 25
reciprocating, a plurality of contact members,- one '
for each conductor of said cable, said contact
members being supported at one end of said drum l
.30 shockless reversal at the end of each stroke com- ' for rotation therewith, and means for connecting
said contact members with a source of current 30
prising, a cable drum, driving means including including a plurality of stationarily supported ^
quick reversing means _for rotating said drum ñrst
in one direction and then in the other. direction,
cables connected to opposite sides of the recipro
contact engaging elements adapted to engage the
respective contact members.
ALBERT M. JOHNSON.
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