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Патент USA US3024493

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March 13, 1962
Filed May 22, 1959
3 Sheets-Sheet 1
MIh.lll l
March 13, 1962
Filed May 22, 1959
3 Sheets-Sheet 2
March 13, 1962
Filed May 22, 1959
3 Shee’cs--Shee’fI 3
Y 115115
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_ _ _. -Ä-\. Lî/ÄÁ
@je/M, W/GÄâVf/ß
States atent Chime
Patented Mar. 13, 1.952
pen'sation> and swing adjustments of the- arbor may be
effected; and
FIG. 9 is a cross-section view taken substantially along
Edwin H. Brauer, Jr.. Cleveland, and Gilberti Janke,
Parma, Sirio, assignors to TheY Osborn Manufacturing
Company, Cleveland, Ohio, a corporation of Ohio
Filed May 22, 1959. Ser. No. 815,219
3 Claims. (Cl. 15-21)
the line 9---9, FIG. 8, showing the arbor swing adjustment
The present invention relates generally as indicated
As shown in FIGS. l and 2, the brushing machine 1
to a brushing machine and more particularly to a brush
ing machine of the type which employs a rotary brush
mounted on an arbor, the `brush being adapted to be en
gaged with workpieces to remove foreign matter, or to
perform various other surface beneficiating. effects there
It is one principal aim »of the present invention to pro
vide a brushing machine of the character indicated which
is of simple construction and economical to manufac
and brush “lift up” mechanism.
The Brushìng Machine and Work Holder Generally
(FIGS. I and 2)
herein is a self-contained unit adapted to be mounted
adjacent to an indexing work holder, such as an indexing
table 2, which is equipped with a circular series of verti
cal rotating spindles 3' (only one of the spindles 3 being
shown in FIGS. l and 2).
Each vspindle 3 has an ex
pansible chuck 4 thereon for holding a workpiece W
thereon. Herein, by way of example only, the Work
piece W is shown as being a gear -which is to be de-bur'red
by brushing the opposite plane faces thereof with the ro
tary wire brushes 5, 5 of the 'brushing machine 1. It
It is another object of this invention to provide a brush 20 is to be understood that additional brushing machines 1
may be mounted adjacent to -other stations of the indexing
ing machine of the character indicated in which the brush
table 2 to perform brushing operations on other surfaces
arbor is capable of universal adjustment `so as to position
of the work W. Thus, for example, the brushes 5, 5
the brush mounted thereon to best perform its functions
on a workpiece irrespective of the size and shape of the
workpiece and the location of the surfaces thereof which
are to be brushed.
lt is another object of this invention to provide a brush
may be arranged to brush one plane face of the work W
at one station, while the brushes 5, 5 at another station
may be arranged to brush the opposite plane =face after
the work W has been turned over at an intermediate sta
pensate for brush wear.
ln essence, the brushing machine 1 as illustrated in
FIGS. l and 2 comprises a base 6 which has a horizontal
It is another object of this invention to provide a
brushing machine of the character indicated in which the
toward the vertical axis about which the indexing table
ing machine of the character indicated in which provi
sion is made for adjustment of the brush anbor to com
brush arbor assembly and the drive motor therefor are
mounted on a support which is disposed for rotary or
swinging adjustments about angularly related axes and
for lineal adjustments in angularly related :directions so
that the brush may be adjustably positioned to perform
its brushing operations on work in the desired direction
slideway 7 thereon, said slideway 7 extending generally
2 is indexed and tangentially of the Vertical axis about
which the work holding spindle 3 is adapted to be driven
by suitable drive means (not shown).
Horizontally adjustably mounted on the slideway 7 is
the lslide member 8 which carries a vertical post 9 on
which the brushing mechanism 10 is mounted for vertical
adjustment axially along post 9 and Ifor horizontal swing
irrespective lof the size and shape of -the work.
Other objects and- advantages of the present invention 40 ing adjustment about the axis of post 9. Thus, the arbor
11 and brushes, 5, S thereon may, by reason of the fore
will become apparent as the following description pro
going adjustments, be moved horizontally along slide
way> 7 and vertically along post 9, and swung in a hori
To the accomplishment of the foregoing and related
zontal plane about the -vertical axis of post 9 so as to
ends, the invention, then, comprises the `features herein
bring the brushes 5, 5 into operative engagement'with
after fully described and particularly pointed out in the
work W chucked byv chuck `4 on spindle 3.
claims', the following description and the annexed draw
The `arbor l1 is _ioiurnalled in housing 12, the housing
ingssetting forth in detail a certain illustrative embodiment
12 and the brush drive motor 14 being mounted in ñxed
of the invention, this being indicative, however, of but one
relation to one another on a plate 1.5 which isr hingedly
of the various ways in which the' principle of the inven
tion may be employed.
50 mounted on hinge pin 16 to enable take-up of'brush wear
in cases where the work W has a generally vertical facer
ln said annexed drawings:
which is> adapted to be contacted by peripheral portions
FlG. l is a side elevation of a brushing machine ac
of the brushes S, '5 that lie in a horizontal plane con-cording’to this invention, such machine being shown
taining the axis of the arbor 11. The plate' 15, as later
mounted adjacent to one of the work holding spindlesv of
described in detail, is also mounted for swing adjustment
anfindexing~` table or the like;
about'the horizontal transverse axis 17, and provision is
FIG. 2 is‘a'top plan view of the instant brushingma
madeV for swinging the brush arbor 11 away from the
work W to dot-dash line position of FIG. 1 about the’
FIG. 3 is- a’ side elevation view' similar to FIG. 1, ex
axis 17.
cept to larger scale, a portion of the’base of the machine
Driving of the brush arbor 11 isv eñected by- a belt'
drive contained inside the guard 1S shown in FîGS. l
FIG.’ 4 is a top plan view as viewedfrom the top of
andV 2. Provision is also made for vertical adjustment
FlG. 3, the brush drive motor having been omitted;
of the plate 15 on which the drive motor 14 and brush4
FIG. 5`l is an'end elevation view (with the base omitted)
arbor housing 12'are mounted to compensate‘for wear
as viewed from the right-hand side of FIG. 3;
FIG. 6 is anA end elevation view of` the base‘of> the 65 of the brushes 5, 5 when the work W is engaged by thef
top or bottom peripheral portionsv of the brushes,- such
machine as viewed from the right-.hand side of FIG. 3;
adjustment preferably being eiïected automatically ac
FIG. 7 is a cross-section view of the ratchetwrench
cording to the ampere draw or load on the motor'1-4.
and nut by which the brushing mechanism is adapted to
From the foregoing it can be‘seen that the brushes
be vertically adjusted; such section havingïbeen'taken‘ sub
5, Sïor other surface'beneñciating implements mounted ’on
stantially along- the- line 7_7, FIG; 5;
70 the arbor 1lV maybe presented to the WorkW at any of“
IFlGr.' disy a’ cross-section’view along'line 8;-8, PIG. 3
having been broken away;
showing portions of vthemechanismsfbywhich wear'- corn
alirnitlessl number of different-positions as dictated by
the size and shape of the work W, the disposition of the
zontally extending leg of the L-shaped base 6. Thus, the
post 9 is firmly supported in vertical position in the s_ocket
surfaces thereof which are to be brushed, the desired di
rectoin of brushing, etc.
By way of summary of the foregoing adjustments, the
brushes 5, 5 herein may be positioned as aforesaid in a
limitless number of different positions, to wit:
34 for movement horizontally in unison with the slide 8.
(II ) Vertical Adjustment 0f Brushing Mechanism (FIGS.
1 to5 and 7)
The base portion 40 of the brushing mechanism 10 has
(I) Horizontal adjustment of the brushing mechanism
10 along the slideway 7 of the base;
(Il) Vertical adjustment of the brushing mechanism
10 along the post 9 of the horizontal slide 8;
(III) Swing adujstment of the brushing mechanism
threaded portion of the post 9 and is provided with split
1i! about the axis ofthe post 9;
which, through the thrust bearing 43, engages the lower
(IV) Swing adjustment of the brushing mechanism 10
about a horizontal axis 17;
(V) Vertical adjustment of the arbor-motor sub-as~
sembly of the brushing mechanism 1i) to compensate for
brush wear;
(VI) Generally horizontal adjustment of the arbor
motor sub-assembly about the hinge pin 16 also to com
pensate for brush wear; and
(VIl) Brush “lift-up” about the horizontal axis 17.
The Brush Arbor and Drive Therefor (FIGS. I, 2, 3, 5
and 8)
an opening -therethrough which is a slide tit on the upper
clamps 41 at its upper and lower ends.
In threaded engagement with the post 9 is a nut 42
end of the base portion 40 whereby, when the nut 42 is
rotated in one direction (with the clamps 41 loosened),
the brushing mechanism 10 as a whole will be raised verti
cally along the post 9. Conversely, when the nut 42 is
turned in the opposite direction the brushing mechanism
will move downwardly along the post 9 by gravity.
In order to facilitate such rotation of the nut 42 it
has mounted thereon a ratchet wrench 45 which includes
a ring 46 rotatable on the nut 42 and retained thereon by
the retainer ring 47 secured to nut 42, and a radially ex
tending handle 48. The periphery of the nut 42 inside
the ring 46 of the wrench 45 is formed with a series of
The brush arbor 11 is journalled as by anti-friction 25 axial grooves which form teeth 49 engaged by a reversia
bearings 20 in the tubular housing 12 which is íixedly
mounted on the plate 1‘5 as aforesaid. The brush arbor
11 is adapted to have one or more rotary brushes 5, 5
mounted adjacent one end thereof and has a pulley 21
ble spring actuated ratchet plunger 50, as best shown in
FIG. 7. Thus, when the wrench handle 48 is swung in
a clockwise direction as viewed in FIG. 7, the end of the
plunger 50 will engage the side of one of the teeth 49,
keyed thereon adjacent the other end. Also mounted 30 whereby the nut 42 will be rotated in a counterclockwise
on the plate 15 in a position beneath the housing 12 is
direction to lift the brushing mechanism 10 through the
the electric drive motor 14 having a pulley 23 keyed on
thrust bearing 43. The ratchet plunger 50 is formed with
a neck 51 and a spring 52 around the neck is compressed
the motor drive shaft 24. Trained over the pulleys 21
between a shoulder of the plunger 50 and an abutment
and 23 is a drive belt 25 to transmit driving torque from
motor 14 to arbor 11, a belt tensioning device 26 being 35 member 53 to tend constantly to urge the plunger 50
radially inward. There is a head 54 ñxed to the plunger
mounted on the tubular housing 12 adjacent the pulley
50 provided with a cross pin 56, the ends of which are
21. The device 26 is provided with a roller 27 that
engaged in a slot 57 extending diametrically across the
engages a portion of the belt 25 between the pulleys 21
and 23.
radially outer end of the handle 4S. Thus, by pulling
The drive motor 14 and brush arbor housing 12 are 40 outwardly on the head 54 of the plunger 50, the inner
end of the plunger 50 will be withdrawn radially outward
mounted in fixed position with respect to each other on
from the grooved section of the nut 42 and the ends of
the plate 15 so that driving torque will be transmitted to
the cross pin 56 will be pulled out clear of the slot 57,
the brush arbor 11 in any of the adjusted positions of the
plate 15 and brushing mechanism 10.
whereby the head of the plunger 50 may be rotated 180°
to reverse the position of the leading edge thereof. With
The adjustments of the brushing mechanism 10 and the
the plunger 50 thus reversed, it will click over the teeth
details of the structures for effecting the same will now
49 when the wrench 45 is turned in a counterclockwise
be described in the same order as enumerated above.
direction and will have driving engagement with the side
(I) Horízonlal Adjustment of the Brushing Mechanism
of one of the teeth 49, when the wrench 45 is rotated in
(FIGS. I to 4 and 6)
50 a clockwise direction. Thus, the nut 42 will be rotated
As best shown in FIG. 6, the base 6 of the brushing
in a clockwise direction to allow the base portion 40 of
machine 1 is of generally L-shaped form and has secured
the brushing mecahnism 10 to descend by gravity to a
desired adjusted position.
across the top thereof, in horizontal position, a round
shaft or slideway 7, the opposite end portions of the shaft
With the base portion 40 of the brushing mechanism
7 being formed with iiats engaging corresponding flat 55 1G in desired vertically adjusted position the clamps 41
faces on the base 6. The shaft 7 is secured in place
against rotation and axial movement as by means of the
screws 30.
The slide 8 is provided with split clamps 31 at its ends
and is horizontally adjustable along the shaft 7, fine ad 60
justments being made by turning the screw 32 which has
may be tightened to lock the same in such adjusted
(III) Swing Adjuslmerzl of the Brushing Mechanism
threaded engagement with the slide 8 and which is rotat
About the Axis of the Post (FIGS. I to 5 and 7)
As previously mentioned, the base portion 40 of the
brushing mechanism 10 has an opening therethrough
ably, but `axially fixedly, mounted on the base 6. Thus,
which is a slide tit on the post 9, and because the post 9 is
when the clamps 31 are losened, the slide 8 may be moved
horizontally toward the right or left as viewed in FIG. 3,
by turning the screw 32 in one direction or the other.
The slide 8 is integrally formed with a vertical socket
round, as is the opening in base portion 40, the entire
brushing mechanism `1G may be swung completely around
the axis of the post to any desired position and locked
thereat by means of the clamps 41.
34 for the
end of the
the socket.
axis by the
lower end portion of the post 9, the bottom
post 9 being engaged with the shoulder 35 in
The post 9 is held against rotation about its
lock-screw 36 which has its inner end engaged
(IV) Swing Adjusimelzi of the Brush Arbor About the
Horizontal Axis 17 (FIGS. I, 2, 3, 4, 5, 8 and 9)
As best shown in FIGS. 3 and 8, the base portion 40 of
in a recess formed in the post.
The lower end of the post socket 34 is formed with a
slot 37 which constitutes a keyway that has sliding en
shaft 60 journalled therein, one end of the shaft 60 hav
ing a worm wheel 61 keyed thereon and the other end
gagement along the horizontal key 38 secured on the hori«
having a slide sub-assembly 62 fixed thereto to which the
the brushing mechanism 10 has a horizontally extending
aforesaid arbor a'nddrive- motor supporting‘fplate' 15- is
arfrange‘d’to operate onfworkïsurfaces‘ disposed in abbi-i“
secured in a--man'ner hereinafter described.
z`ontal plane" containing theaxis óf theia'rborî 11.
If desired, this wear~ compensation ln’iayr‘ be automáti'
Rotation of the arbor-motori sub-assembly on pla‘teßlS
of brushing mechanism 10 about the axis 17 of the shaft
60 is effected as by means ~rof the rotary worm 63 which,
ically eñected in-response-to the ampere' draai/"ofitheî
brush drive motor 14 which’in turn controls energizationï
when rotated in one direction, has its head 64 in abutting
of a wear compensator motor such as m‘otor 71. It isï‘to`
engagement with the `base portion 4i) of the brushing
mechanism, whereby the worm wheel 61v and shaft 6i) will
be turned to swing the plate 15 and the brush arbor 11
thereon to any desired position about the axis 17.
The slide plate 65 of the slide sub-assembly 62 is
be noted that the axis of the hinge pinl‘ó> is located'for-~
wardly ofthe initial position of the axis of the'brush
arbor 11 when a newbrush 5 (or brushes) is‘mounted
thereon, whereas,I the arbor axis will be disposed for
wardly of the hinge pin-axis when the plate 15 has been'
`formed with a pair ofïarcuate slots 6‘6 therethrough and
when the brush arbor 11 has been adjusted as desired
about the axis 17 of theV shaft 60, the screws 67 will be
threaded into the'base portion 40 with their shanks ex
adjusted to compensate for a fully worn brush.v Accord
ingly, the `arc of swinging of the brush arbor 11 in mak
ing such horizontal adjustments for wear is nearly a
straight horizontal lineïso that the position of the-periph
tending through the aforesaid arcuate slots 66, paired
ery of the brush 5 is not moved vertically with respect
threaded holes as shown being provided in the base por
to the Work engaged thereby, except for the Very slight
tion 40 so that the screws 67 may thus be inserted irre
amount by which the arc deviates from a horizontal
spective of the rotary position of the slide plate 65. These
straight line.
screws 67 `are preferably shoulder screws (or are ordinary
Obviously, both horizontal .and vertical brush wear ad
justments may be made so that the resultant is perpendic
ular to the work surface contacted by the periphery of
the brush.
screws not fully tightened) so that the slide plate 65 may
be actuated to lift up the arbor 11 from the work W as de
scribed under the heading VII.
(V) Vertical Adjusfment of Brush Arbor t0 Compensate
for Brush Wear (FIGS. 1 to 5 and 8)
As best shown in FIGS. 3 and 5, the base portion 40 of
the brushing mechanism 10 has an upstanding bracket 70
(VII) Brush Lift-Up to Clear the Work (FIGS. l to 5,
8 and 9)
In the operation of the brushing machine 1 it is occa
sionally desired to move the brushes 5, 5 out of engage
to which a reversible electric motor 71 is secured, the
ment with the work W either to examine the work W
motor 71 being provided with a. right angle drive head 72 30 after it has been brushed or to unload and load work W
terminating in a bevel pinion 73 which meshes with a
onto and from the spindle 3. In order to conveniently
effect such “lift-up” there is rotatably connected to the
bevel gear 74 keyed on the upper end of a rotatable, but
axially fixed, screw 75. The lower end of the screw 75
head 64 of the adjusting worm 63, the piston rod 85 of
a double acting pneumatic cylinder 86. Regardless of
has threaded engagement with the nut 76 of a dovetail
slide 77 to which the arbor and drive motor mounting 35 the position in which the arbor 11 has been adjusted
plate 15 is secured. Said dovetail slide 77 is formed
about the axis 17 of the shaft 60. when the piston on pis
ton rod 85 is moved to the right in the cylinder 86, as
viewed in FIGS. 8 and 9, the worm 63 will be thereby
dovetail tongue formed on the `aforesaid plate 65.
pulled axially toward the right to thus rotate the worm
Thus, by energizing the motor 71 in one direction the
brush arbor 11 may be lowered with respect to the work 40 wheel 61 and shaft 60 in la direction to lift the brushes
5, 5 upwardly out of engagement with the work W, such
W to compensate for wear of the brushes 5, 5 and, of
position being represented by dot-dash lines in FIG. 1.
course, the energization of the motor 71 may be automat
When the piston in the cylinder 86 is urged toward the
ically controlled in accordance with the pressure between
the work W and the brushes 5, 5. One manner of effect
left, the arbor 11 will be swung `down to its preset posi'
ing such automatic wear compensation is disclosed in
tion wherat the head 64 of the worm 63 abuts the side of
the base portion 4t# of the brushing mechanism 10.
the copending application of Lyndon C. Cole, Ser. No.
679,720, ñled August 22, 1957, in which the brush wear
compensation is effected in accordance with the load or
description, it is clear that the
ampere draw of the brush drive motor. Thus, the in
present brushing machine 1 is of simple, compact con
stant setup will be such that as the brushes 5, 5 wear, the
struction which is economical to manufacture, which is
torque load on the drive motor 14 will become less, as
easy to adjust to effect brushing of work in a desired
will its ampere draw, and, therefore, such decrease in am
direction irrespective of the position, the size, and the
pere draw of the drive motor 14 will energize the wear
shape of the work, and which is inexpensive to main
compensator motor 71 until the ampere draw of the brush
tain in proper working condition due to provision of
drive motor increases to a predetermined value. There
brush wear compensators and to ready accessibility for
is mounted at the upper end of the screw shaft 75, a ro
replacement of brushes. Although the arbor 11 is here
tary switch 78 or the like, which is effective lto determine
in shown with brushes 5, 5 mounted thereon, it is to be
the direction of rotation of the motor 71 since, in some
understood that other surface treating tools may be used
cases, the arbor 11 may have to be moved upwardly to
60 for polishing, abrading, or like operations on work sur
compensate for brush wear.
with a dovetail groove which fits over a complementary
(VI) Horizontal Wear Adjustment About the Horizontal
Hinge Pin 16 (FIGS. 1 t0 5)
The brush arbor housing 12 and drive motor 14 are
mounted as aforesaid, on a plate y15, and said plate at its
lower end is connected -by the hinge pin 16 to the dove
tail slide member 77.
The bracket 70 aforesaid has a
Other modes of applying the principle of the inven
tion may be employed, change being made as regards
the details described, provided the features stated in any
of the following claims, or the equivalent of such, be
We therefore particularly point out and distinctly claim
horizontally extending adjusting screw 80 rotatably, but
axially ñxedly, mounted thereto and engaged with said
as our invention:
adjacent the upper end of said plate 15, whereby, when
thereon for contacting work to be brushed; means sup
porting said arbor for swinging movement about an axis
1. In a brushing machine, the combination of a power
adjusting screw 80 is the nut 81 which is pivotally carried 70 driven rotary brush arbor adapted to mount a brush
the screw 8€) is rotated in one direction, the plate 15 may
that is angularly related to the axis of said arbor; a
be swung about the axis of pin 16 from the solid line
worm wheel operatively connected to said arbor to so
position of FIG. 5 to the dot-dash line position to com
pensate for wear of the brushes 5, 5 when the latter are 75 swing the latter responsive to rotation of said worm
wheel; a rotary worm operatively engaged with said
ment but allowing rotary movement of said worm with-
worm wheel to rotate the latter; means supporting said
out effecting rotation of said reciprocating member.
3. The brushing machine of claim l wherein said
worm for rotation and axial reciprocation including stop
worm reciprocating means comprises a piston~cylinder
in one direction whereby when Said worm is rotated in Ul assembly of which the reciprocable component is con
nected to said worm.
one direction said worm wheel and arbor are turned
about such axis thus to position the brush to contact
References Cited in the tile of this patent
the work; and Worm reciprocating means operatively
connected to said worm to move the latter axially in
the opposite direction thus to turn said worm wheel and 10
Larson ______________ __ Nov. 8, 1932
arbor in a direction such that the brush is moved away
Schick ______________ -_ June 27, 1950
from the work.
means effective to arrest axial movement of said worm
2. 'Ihe brushing machine of clairn 1 wherein said
worm and the reciprocating member of said worm recip
rocating means are axially fixed for reciprocating move
Strong ______________ __ May 10, 1955
Hawkinson ____________ __ Apr. 2, 1957
Moore et al. _________ __ Apr. 14, 1959
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