close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2121818

код для вставки
June 28, 1938.
P. H. NAST
2,121,818
PUNCHING MECHANISM
Filed Dec. 3, 1934
2 Shéets-Sheet 1
mè.,
EN»
www@
mw
wm
Èâ@
mmä
ì
V_ [72 van for:
Ñ l $00k/ /í/Vaa?
y June 28, 1938.
P. H. NAST
.2,121,818>
PUNCHING MECHANI SM
Fil'ed Dec. 5, 1954
2 sheets-sheet 2
l
--m
» I
«mi»
ën,
'
A TTORNE
2,121,818
Patented June 28V, 1938
¿ y UNITED A ’STATES PATENT orifice ‘i
l
f f 2,121,818v
PUNGHING MEoHANIsM
Paul H. Nast, Claremont, N. H., assignor to Sul
, livan Machinery Company, a corporation of
Massachusetts .
’ Application December~3, 1934, Serial No. 755,730
14 Claims.
(Cl. 76-5)
This invention relates to punching mechanism,
and ,more particularly to inflprovementsV in a
punching mechanism for reforming the bore of a
tially on line 4--4 of Fig. 1.
hollow ,rock drill steel or similar tubular articles.
tially on line 5_5 of Fig. 2.>
In hollow rockvdrill steels, and `similar tubular
I articles, theborein the steel adjacent thebit and
shank becomes deformed during the sharpening
process, and it is often necessary to reform the
hereafter the sharpeningprocess is completed.
This reforming _operation is usually accomplished
, by driving a punch pin with a .hammeringaction
into?the steel bore to open and reform the bore.
‘. 'Frequently during this reforming operation, theV
punch pin sticks in the, steel bore „and some diffi
V culty is lencountered ineffectingreleaseA Vof the
’ punch pin from ,theusteeL
‘
Fig. 4 is a vertical sectional view taken substan
,
_ ,
' i
Fig. 5 is a cross sectional view taken- substan
’
Y
Fig. 6 is a detail sectional View taken on line ï;
6-5 of Fig. 2.
Fig. '7 is an enlarged vertical sectional View
similar to Fig. 4 showing parts in a different
position.
_
,
,
'
Fig.Y 8 is a horizontal sectional view taken’sub 10
stantially on line 8-8 of Fig. 5.
'
.
Fig. 9 is a cross sectional view taken substan
tially on line 9-9 of Fig._7.
,
'
-
f
Fig. 10 is a vertical sectional view taken sub,
stantially on line IU--Iß of. Fig. 5.
ì _
v g `
Fig. 11 Vis av horizontal sectional view taken
'
A primary object of the present vinvention is to ' substantially on line ll-II of Fig. A5.
Fig. 12 is an elevation >of the control valve.
Inithisillustrative embodimentY of the _'„inven
nism whereby the punch pinmay be driven with a
hammering action into and out of the steel bore, tion, there is shown a punching mechanisnngen a»
1 provide an improved drill steel punching mecha.
thereby to facilitate the bore reforming process.
Another Vobject is to-provide an improved drill
erally designated I, mounted on a suitablesup
steel lpunching mechanism> having Van improved
mechanism, generally designated 3, this support
and clamping mechanism being generally the
vrhammer mechanism vformdriving the punchvpin
into` and outJ of .thedrill steel bore, „Yet another
object isto. provideanimproved hammer mecha
nism rfor peiîcussively actuatingV the _punch pin
bothV during the hole> opening and withdrawal
operations, the hammerrnotor percussively actu
atingthe punch pin during withdrawal, thereby to
leliminate _any possibility Vof a stuck pin. , Still
another object is >to provide in a punching mecha-
port 2 in juxtaposition with -a suitable clamping Y
same as that described in myV copending applica.
tion Serial No. 755,729, vi'lled of evendate'here
with. . Supported between the jaws ofthe clamp
ing mechanism 3 is a hollow rock YVdrill steell’4
having its bit 5 engaging a suitable stop andîposi
tioning plate 6, the clamp mechanism and stop ~
plate maintaining the drill steel in „longitudinal
, alinement with the punching mechanism so that
`nism'of the above character improved means for
the punching mechanism maybe fed with‘respect
ieedingthe punching , mechanism toward and
to the drill steel to effect reforming of the drill'
steel bore upon completion of the steel sharpening
process. >As the particular form of clamping
from, the work and having embodied therein im
proved. feed. control means'. ? >Yet _another object
Iisto.provide an improvedV feedcontrol'meansV for
mechanism and stop plate for vmaintaining the
automatically reversingthe direction of ,feed upon
drill steel in bore reforming position do not .
completion: of- . the hole, opening function and
specifically enter into~ this invention, and are
clearly described in my copending application
4o
mentioned above, further, description of the same
-
having associated therewithl improved means for
varying' the range of feeding movement. These
andother-objectsand.advantages.of the invention
will, however, hereinafter-more fully appear.
I-n-the accompanying drawings there is shown,
for purposes `of’ illustration, oneform which th
invention'mayvassum'e inV practice.
“In
thesedrawings,---'`
'
y
-
'
-
f Y -
g
f
~
»
»
-
` Figfl'isaplanview of'y the illustrative embodi
»ment'of -the improved :punching mechanism, to
herein is yconsidered unnecessary.
Now referring to the improvedpunching mech
anism I, it will be noted thatsecured to averti
cal plane face 'l of the support 2, asby screws
8, is a frame 9 having parallel honizontaljguide
ways I 0, I0 and supporting improved >control
»means generally designated II. Mounted in the
lframe guideways lû‘are vlateral, guides' I2, I2
formed on projections depending from the bot
l i getherA withy fits' associated >supporting means.
tom of the cylinder I3 of a punch pin hammer
' y 1 Fig. 2 is a side elevational ïviewof the'punching
ing mechanism, generally designated I4. >This
hammering mechanism is Yof the differential pis
mechanismsho'wn in Fig.’ 1.Y
j
, Fig.,3iis‘an 4end elevational view of the punch
ing mechanism shown" inA~ Fig. '1.
,
- ton, valveless type, and- the hammer motor -cyl
inder I3 has a large bore I5ï and anralinedï‘re "55.
»
2
2,121,818
duced bore lâ; and reciprocable in the bores of motor and communicating through a longitudi
this cylinder
a hammer piston il having a » nal supply passage Biiwith the pressure fluid
large head i8 fitting the bore i5 and a reduced supply chamber 5e. Parallel passages 65, 65 com
head i9 fitting the bore i5 and formed on a rear
ward projection integral with the piston head i8.
A punch pin 2li is secured by a suitable pin lock
municate through radial ports with the reduced
bore i6 at points substantially midway between
the annular recesses S2 and 63 and through ports
65 with the forward end of the enlarged cylinder
2l to a cylindrical striking block 22 recìprocably
mounted in a bore formed in the front motor bore l5. The enlarged cylinder bore I5 is pro
head 23. The rear end of the motor cylinder ‘ videdY with a free exhaust passage B1 controlled
by the hammer piston. When the control'valve 10
10 is closed by a rear head block 24, and the front
is turned into a position to supply pressure fluid
and rear heads are maintained in assembled re
lation with respect to the cylinder by usual side
bolts 25, 25. The cylindrical striking blockV 22
has secured within the bore thereof, by across pin
15 26, the forward end portion of a cylindrical strik
ing rod or bar member 2l extending axially
through the bore 2d in the hammer piston and
to the port G9, passage Eil, port 5I, longitudinal
Vhaving at its rear end an integral striking head
piston projection to the rear end of the large
29.
During forward feeding of the punching
20 mechanism, the hammer piston of the hammer
ing mechanism is adapted to deliver impact blows
to the rear annular striking surface of the strik
ing block 22V to drive the punch pin 20 into the
drill steelbore, and, upon reversal of the ham
mechanism during punch pin withdraw
2.5 mering
al, to deliver impact blows to the forward annu
lar striking surface of the striking head 2S to
hammer the punch pin out of the steel bore.
Formed in the frame 9 with its axis lying in a.
passage 52, lconduit 53, chamber 54 and passage
55, to the pressure chamber 56, pressure fluid
may now through passage 64 and annular re 15
cesses 62 and 63, pressure fluid flowing from the
former past the reduced exteriorof the hammer
bore E5 to act on the rear pressure area of the
large piston head i8, and through the latter 20
recess, afterV the piston has moved forwardly,
to the rear end> of the reduced bore I6 to sup
plement the pressure coming from the chamber
5S axially of the cylinder and which, though dur
ing hammering is somewhat throttled by the head 25
‘29, acts constantly on the rear pressure area of
the`small piston head I9. At this time the for
ward end of the cylinder bore i 5 is connected
to exhaust through exhaust port 61, and the pres
vertical plane including the hammer motor axis,
sure acting on the rear pressure areas of the 30
and located below the guideways on which the
hammering mechanism is guided, is a feed cyl
inder whose bore ill contains a reciprocatory
hammer piston drives the latter forwardly in
its cylinder. Cut-,off to the larger rear area
feed piston 32 having its feed piston rod 33 pro
35 jecting through the packed rear head of the feed
cylinder and secured at 3@ to a depending por~
tion 35 of the rear head block 2d. The forward
end of the feed cylinder bore is closed by a
threaded plug 36, and formed in the frame@
40 transversely beneath the feed cylinder bore, sub
stantially midway between the ends of the latter,
is a valve bore 3l having mounted therein a ro
tary control valve 33. Secured to the valve rod
of this valve is an operating lever 3Q to which
45 are pivotally connected at ¿iii parallel links Lil,
in turn pivotally connected at ¿2 to a longitudi
nally slidable operating rod 43. This operating
rod is guided Within guiding brackets M, ¿ifi se
cured to the frame 9, and is formed at its forward
50 end with a grasping handle 135. The rotary con
trol valve 3B is provided with an internal cham
ber ¿il which communicates with a pressure
chamber d8 formed within the frame 9, in turn
communicating with any suitable pressure fluid
source. The valve chamber ¿il is communicable
through a radial valve port ¿i9 with a passage 5u
which is connected by a port 5l to a longitudi
nal passage 52 formed in the frame 9, in turn
connected by a conduit 53 with a chamber 54
60 formed in the rear head block projection 35. The
chamber 54 is connected by a passage 55 to an
annular chamber 55 formed in the rear head block
2è of the hammer motor. Also communicable
with the valve chamber di through radial ports
65 formed in the valve body are reverse and for
ward feed passages 5l' and 53, the former com
municating through a passage 55 with the for
ward end of the feed cylinder bore, and the latter
communicating through a port til with the rear
end of the feed cylinder bore.
The fluid distribution means for effecting re
ciprocation of the hammer piston of the ham
>mering mechanism is of a well known design and
comprises recesses S2 and 63 formed annularly
in the walls of the reduced bore lâ of the hammer
occurs when the head I9 overruns the groove 62.
When the exhaust port 51 is uncovered by the ’
rear edge of the large piston'head I8, the rear 35
end of the bore l5 is connected _to exhaust, while
the rear edge ofthe small piston head I9 over
runs the radial ports of the supply passages 65,
65, thereby admitting pressure fluid from the
recess 63 through these passages and ports 66
to the forward end of the large cylinder bore I5,
the pressure fluid acting on the large front pres
sure area of the piston tofdrive the latter rear
wardly in its cylinder against the opposing con- '
stant pressure acting on the Arear pressure area
of the small piston head I9. These operations
are rapidly repeated during normal operation
of the hammermotor, thereby effecting a rapid
hammering action. which is transmitted through
the cylindrical punch pin block and bar to the 60
punch pin or to the head 29, depending upon
whether hammering in_or hammering cut is in
progress. By adjusting the control valve 38,
pressure'may be supplied either to one end or the
other of the feed cylinder, thereby to effect feed 65
ing of the punching mechanism either forwardly
to drive percussively the punch pin into the drill
steel bore, or rearwardly to effect percussive with
drawal of the punch pin from the steel bore.
The improved means for eifecting automatic 60
control of the feed mechanism and for varying
the ran-ge of movement of the punching mech
anism comprises an upstanding- projection 1U
formed integral with the valve operating rod 43
and engageable by a stop plunger 'H mounted 66
in a guide bracket '12, herein formed integral
with the rear head block 24 of the hammer mo
tor. The stop plunger 'll is provided with a series
of notches 13 with which a positioning pin 14,
arranged in a bore in the guide bracket 12, co 70
operates in the adjustment of therstop plunger.
By removing the pin 14 and sliding the stop
plunger into different positions, it is evident that
the time of engagement of the projection 1I] with
the stop plunger may be varied, as desired.
-75
r2,121,818
reduce
wear.
Y
.
f
I
The ' operation of the improved punching
Ímechanism will be clearlyapparent from the de
scription given.` When the drill steel 4 is prop
L
Y, elly-positioned with respect tozits clamping mech
v :10
'
_
‘
I
'
f While there is described in this application one
form which the invention may assume in prac
tice, it will be understood that this form is shown
for purposes of illustration and that the inven
tion „may be modified and embodied in various
other forms without departing from its spirit orv *A ’
` the scope of the appended claims.
anism'3 and'v stop plate 6, the operator grasps
v v What I claim as new and desire to secure by
Letters
and lever 39, the control valve 38 into a posi-Y
tiontosupply motive Vfluid through thev hammer
motor supply passages' to thehammer motor cyl
`inder, thereby to effect rapid reciprocation of
Áthe hammer piston.V At the same time, pressure
fluid is supplied from the valve chamber through
passage 58 and port 60 to the rear end of the
feed cylinder bore, the pressure iiuid acting on
the rear pressure area of the feed piston 32 to
feed the hammering mechanism bodily along the
frame guideways 10,10. Upon engagement of
the point of the punch pin 20 with the drill
A25 steel, the cylindrical striking block 22 is held
temporarily stationary so that upon vcontinued
movement of the hammer mechanismrwith re
` spect thereto this striking block is brought into
striking relation with the hammer piston, and as
@30 aresult, upon continued forward movement of
Patent
is:
Y
Y
10
»
' 1. In a Ypunching mechanism, a guide; a harn
mer mechanism-mounted on said guide for move
ment therealong and having reversible hammer
.ing` means for driving with a hammering action
a punch pin `into and out of the. work, means for
feeding said lhammer mechanism forwardly and
rearwardlyalong said guide, means for effecting
operation of said hammer mechanism during both
forward, and reverse feeding movements thereof, 1
and mechanically actuated means for aut-ornati
cally reversing the direction of feed when said
hammer mechanism has lbeen fed in one direc
tion a predetermined distance including an abut
inentimounted exteriorly of and movable with l
ysaid hammermechanism, and a reversing control
element supported against bodily movement with
respect to said guide and having operating means
engageable Yand actuated by said abutment.
2. In a punching mechanism, a guide, a re
.the hammering mechanism the Ípunch pin is
driven into the rdrill steel bore by the repeated
blowsy of the hammer piston against the striking
block 22. When the reforming of the drill steel
versible punch pin hammer mechanism slidable
on said guide and having reversible hammer
means for driving the punch pin either forwardly
-bore is completed, that is, when the punch pin
mechanism forwardly and rearwardly along said î
guide, means for automatically reversing the di
`has been driven into the drillsteel bore a suf
ñcient distance, -the'stop plunger 1l engages the
projection 'IllY of the valve control mechanism,
thereby to swing the valve from itsïforwar'd feed
position to its reverse feed position, while the
supply of motive fluid to the hammer cylinder
is continued, and as a result the direction of
feedV is'automatically reversed. Pressure ñuid
then flows through passages 51,v 59 tothe forward
44end of the feed cylinder b_ore to act on the for
ward pressure area of thefeed piston, and as a
. result the hammer mechanism is fed rearwardly
along the frame guideways. If the punch pin
sticks within :the steel bore, the striking block 22
will beheld stationary while the rearward move
ment of the hammer mechanism continues, there
' by bringing` the strikingv head 29 of‘thestriking
a block rod or bar 21 into a position wherein the
i
art.
the'> handle 45 to push the operating rod, 43 rear
wardly, thereby to'rotate, through the links 4l
“ „es
f3
Will be `clearly apparent to those skilled inthe
. Passages 'l5 are provided to conduct lubricant
carried in the motor exhausty through port 6.1., to
'the' guideways |0,. lll. and guides I2, l2. The
guides and guideways may be case hardened t
Y
rear end of the hammer piston will percussively
actuate the same, thereby driving the punch pin
Vout of the work witha hammering action. When
the punch pin is Withdrawnr from~ the drill steel
bore, >the operator may operate the control rod
'handle_45 ’to moverthe control valve into its neu
tral position, therebygshuttingdown both the
hammer motor and feed.
'
_
As Va result‘of this invention, it will be note
Y that an improved punching mechanism is pro
vided for reforming the bore of a hollow rock-drill
steel subsequent to the drill sharpening process,
,65 wherein the punch pin for opening the steel bore
is driven into andout of the bore with a hammer
ing action. It will further benoted that by the
Y provision of the improved variablelrange Ycontrol
mechanism, it is possible .to vary the length of
travellof the hammering mechanism and to effect
>automatic reversal of thedirection of feed when
the >punch pin has been driven intoîthe steel bore
or rearwardly, means for feeding said hammer
rection of feed when said hammer mechanism has
been ,-fed in one direction a predetermined ldis
tance, and associated means for varying the dis
tance of travel of said hammer mechanism.
3„In a punching mechanism, a support pro-Y
YVidinga guideway, a hammer mechanism mount
ed on said guideway for movement therealong
and having reversible hammering means for
hammering a punch pin into and out of a drill
steel bore, reversible means for `feeding' Ysaid
hammer mechanism forwardly and rearwardly
along said guideway, means for effecting opera
tion of said hammer mechanismduring both for
ward and rearward feeding movements thereof,
and mechanically actuated means for automati
cally reversing said feeding means when said
hammer mechanism has driven the punch pin a '
predetermined distance into the drill steelbore
including an abutment mounted exteriorly of 55
and movable with said hammer mechanism, and
a `reversing control element mounted on said sup
port and engageable and actuated by said abut
ment.
,
Y
4. In a punching mechanism, a support hav
ing a guideway, a hammer mechanism slidable
on said guideway and having reversible ham
mering means for hammering a punch pin into
and out of a drill steel bore, reversible means for
feeding saidÍ hammer mechanism forwardly and ’
rearwardly along said guideway, means for au
tomatically reversing said. feeding means when
¿said hammer mechanism has driven the «punch `
pin a predetermined distance into the drill steel
bore, and associated means for varying the vdis
tance which the punch pin may be driven'into
the drillv steel bore.
a'
`
5. In a punching mechanism, a support having
aV sufficient distance. V.These and other .uses and Y .a guideway, a hammer mechanism slidable on
advantages of the improved punchingmechanismV said guideway for hammering a 'punch pin into @is î
2,121,818
4 .
and out of a drill steel bore, reversible means for
feeding said hammer mechanism forwardly and
rearwardly along said guideway, means for auto
positions to engage said first mentioned rod at
different times.
9. In
a
punching Y mechanism,
a
reversible
matically reversing said feeding means when said
hammer mechanism has driven the punch vpin a
punch pin hammer mechanism having reversible
predetermined distance into the drill steel bore,
and associated means for varying the distance
punch pin to drive the latter either forwardly or
which the punch pin may be driven into the drill
steel bore, said feed reversing means including a
mechanism forwardly and rearwardly to move the
10 control element for effecting feed reversal and
said associated means including a control rod
guided on said support, a projection on said con
trol rod and an abutment movable with said
hammer mechanism and engagea-ble with said
v15 control rod projection.
6. In a punching mechanism, a support having
a guideway, a hammer mechanism slidable on
said guideway and having reversible hammering
means for hammering a punch pin into and out
of a drill steel bore, reversible means for feeding
said hammer mechanism forwardly and rear
wardly along said guideway, means for automati
cally reversing said feeding means when said
hammer mechanism has driven the punch pin
a predetermined distance into the drill steel bore,
and associated means for varying the distance
which the punch pin may be driven into the drill
steel bore, said feeding means comprising a feed
cylinder containing a feed piston, said reversing
means including a reversing Valve for controlling
the supply of actuating fluid to the opposite
ends of said feed cylinder, and said associated
means including an abutment movable with the
hammer mechanism and operative upon a pre
235 determined forward feeding movement of said
hammer mechanism to effect reversal of said
valve.
.
7. In a punch mechanism, a support having a
guideway, a punch pin hammering mechanism
40 slidably mounted on said guideway for driving a
punch pin with a direct hammering action into
and out of a drill steel bore, reversible feeding
means for said hammering mechanism, control
means for effecting feed reversal, and operating
means for said control means for effecting auto
matically feed reversal when the punch pin has
been driven into the drill steel bore a predeter
hammering means for percussively actuating the
rearwardly, means for feeding said »hammer
punch pin toward and from the work during the
permissive-action thereon, means for automati l0
cally reversing the direction ofY feed when said
hammer mechanism has been fed toward the
work a predetermined distance, and means incor
porated in said automatic means for varying the
distance of travel of said hammer mechanism to
ward the work.
10. In a punching mechanism, a hammer
mechanism having reversible hammering means
for hammering a punch pin into and out of a
drill steel bore, reversible means for feeding said '20
hammer mechanism forwardly and rearwardly to
move the punch pin toward and from the drill
steel during the hammering action thereon,
means for effecting operation of said hammer
mechanism during forward and rearward feed l25
ing movements thereof, and mechanically actu
ated means for automatically reversing said feed
ing means when said hammer mechanism has
driven the punch pin a predetermined distance
into Ythe drill steel bore including an abutment 30
mounted exteriorly of and movable withV said
hammer mechanism and a movable reverse-ef
fecting vcontrol element relative to which said
hammer mechanism is bodily movable, said con
trol element engageable and actuated by said
movable abutment.
11. In a
.
punching mechanism, a hammer
mechanism having reversible hammering means
for hammering a punch pin into and out of a
drill steel bore, reversible means for feeding said
hammer mechanism forwardlyrand rearwardly to
move the punch pin toward and from the drill
steel during' the hammering Vaction thereon,
means for effecting operation of said hammer
mechanism during forward and rearward feeding
movements thereof, means for automatically re
mined distance including a longitudinal rod slid
ably guided on said support and operatively con
versing Vsaid _feeding means when said hammer
mechanism has driven the punch pin a prede
termined distance into the drill steel bore, and
nected to said control means, and an abutment
rod mounted on said hammering mechanism and
means associated with said automatic means for 50
engageable with said ñrst mentioned rod.
be driven into the drill steel bore.
8. In a punch mechanism, a support having a
guideway, a punch pin hammering mechanism
slidably mounted on said guideway for driving a
punch pin with a direct hammering action into
and out of a drill steel bore, reversible feeding
means for said hammering mechanism, control
means for effecting feed reversal, and operating
60 means for said control means for effecting auto
matically feed reversal when the punch pin has
been driven into the drill steel bore a predeter
mined distance including a longitudinal rod slid
ably guided on said support and operatively con
65 nected to said control means, an abutment rod
mounted on said hammering mechanism and en
gageable with said first mentioned rod, and means
for varying the depth of penetration of the punch
70 pin within the steel bore including adjusting
means for said- abutment rod, said adjusting
means including a series of notches on said abut
varying the distance which the punch pin may
,
.
Y12. In a punching mechanism, a support pro
viding a guideway, a hammering mechanism
mounted on said guideway for movement there
along, reversible means for moving said ham
55
mering mechanism forwardly and rearwardly
along saidv guideway, means for automatically re
versing 'said feeding means when said hammer- _
ing mechanism has moved along said guideway a
predetermined distance in one direction, and as
sociated means for varying the distance of move
ment in said direction including a control ele
ment on said support, for. effecting feed reversal,
said hammering mechanism movable bodily rela
tive to said control element, a control rod sup
ported for axial movement on said support, a pro
jection on said control rod, and an adjustable
abutment mounted exteriorly of and movable
with said hammering mechanism and engage
able with said control rod projection for axially
moving said control rod.
'
ment rod and a stop pin engagea'ble with said
13. In a punching mechanism, a support pro
notches to hold said rod in adjusted position, said Y viding a guideway, a punch pin, hammering
abutment rod being slidable axially into different mechanism mounted on said guideway for move 75
2,121,818
ment therealong, reversible Vfeeding means for
said. hammering mechanism for moving the lat
’ter forwardly and rearwardly along said guide
way, control means „for effecting feed reversal,
manual operating means for saidl control means
including a longitudinal controlrod supported for
’ axial movement‘onsaid,support ‘and operatively
' connected to said 'control means, and automatic
operating means for said lcontrol means for ef
1o fecting automatic feed reversal when.v said ham-4
mering mechanism has moved along said guide
way in one direction arpredetermined distance in
cluding said longitudinal control rod, and an
5
ter forwardly and rearwardly along said guide
Way, control means for effecting feed reversal,
and operating means for said control means for
effecting automatic feed reversal when said ham
meringA mechanism has moved alongpsaid guide 5
Way in one direction a'predetermined «distance
l'including a longitudinal control rod supported for
axial movement on said support and operatively
connectedto said control means, an abutment
rod supported by said hammering mechanism and 10
engageable with said ñrst mentioned rod for
axially moving the latter, and means for varying
the depth of penetration of the punch pin with#
abutment vrod supported by said' hammering . in the steel bore including adjusting means for
15' mechanism and
engageable with said first men
tioned rod for axially moving the latter.'- ~
14.'In a punching mechanism, a support pro
vidingv a guidew'ay, a punch pin, hammering
mechanism mounted onV said guideway for move
20 ment therealong, reversible feeding. means for '_
said hammering mechanism for moving the lat
-said abutment rod, said adjusting means includ
15
ing a series 4of notches on said abutment rod and
aV stoppin engageable with said notches to hold
said rod in adjusted position, said abutment rod '
being movable axially into different positions to
engage said first mentioned rod at different times. 2
PAUL H. NAST.
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 089 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа