US1760333A - Punghing mechanism - Google Patents

Description

May 27, 1930.

w. H. WINEMAN 1,760,333

PUNCHING MECHANISM Filed April 14, 19 27 2. Sheets-Sheet l Immnio 7":

Zlladell ZQnem/aY M by A' 70 M4 1.

May 27, 1930.

W. H. WINEMAN PUNCHING MECHANISM Filed April 14, 192v 2 Sheets-Sheet 2 r azz' Patented May 27, 1930 ITEE) STATES WADE H. wiNEMAN, on MICHIGAN CITY, INDrANA, 'nssrenon "ro sULLIvnN MA- CHINERY COMPANY, A CORPORATION on MASSACHUSETTS PUNGHING MECHANISM Application filed. April 14,

This invention pertains to punching mechanisms and more particularly to pneumatic punching mechanisms for opening or pinning out the holes in hollow rock drill steels.

An object of this invention is to provide an improved punching mechanism. Another object of this invention is to provide an improved pneumatic punching mechanism for opening the holes in hollow drill steels wherein the pinning out tool is hammered by successive blows into the steel and retracted from the steel by but a single blow. Another object is to provide an improved pneumatic punching mechanism wherein the pinning out tool is hammered into and out of the steel. Still another object of this invention is to provide an improved punching mechanism wherein a hammer mechanism is provided for hammering the punch into the steel and a separate hammering mechanism for hammering the punch out of the steel. Yet another obj ect of this invention is to provide an improved pneumaticclamping mechanism or vise for holding the drill steel in position during the punching operation. Another object is to provide an improved pedestal type punch wherein the punching mechanism and vise are mounted on a com mon support in an improved manner. Another object is to produce a clamping mechanism which is quick in operation bo th in gripping and releasing the steel and wh ch is of exceedingly simple and rugged structure. These and other objects and advantages of this invention will, however subsequently more fully appear. v I

In the accompanying drawings I have shown for purposes of illustration one form which the invention may assu'mein practice.

in these drawingst r Fig. 1 is a side elevation of the improved aunching mechanism.

Fig. 2 is a plan view of the punching mechanism shown in Fig. 1.

Fig. 3 is a fragmentary end elevational view of the punching mechanism shown in 1, the view looking toward the clamping mechanism.

Fig; t is an enlarged central longitudinally line c cj of Fig. 1'.

1927. Serial a v 183,854.

extending vertical sectional view taken on liiie 4- 1 "of Fig. 2'. in 4 ig. 5 is a detail rear end elevation olt the improved hammering mechanism. and guide ing means therefor, with parts broken away.

Fig. 6 is a detail sectional view talienoii In this illustrative embodiment of the inen n he e is h wn a pitc ng mechams en rally si nate 1 g e ly 66111- pr s ng a fluid actuated hammering mechan sm 2 and fluid actuated clampi g mechan sm or v se 3,- the hammering mechanism and vise both b'e'ing m'eunted'on a common hollow base or pedestal 4. i i i v The hammering mechanism 2, as shown in the drawings, specifically comprises" a bracket 5 secured by bolts '6 to a laterally projecting arm 7 herein formed integral with th e pedesta l 4. The bracket 5, has a longitudlnally extending guideway- Sphere/in a T-shaPfd groove which. slidably receives a T-shaped guide member 9,, herein preferably formed integral with aeradle. inf carriage member 10.. Thecarriage member 101s here in preferablyin the form of a cylinder havmg a longitudinally extending bore 11 in which liaininerpiston 12 is reciprocably m unted. The carriage member 10v has extending upwardly r m b th d he brackets 13 and 14 having respectively slots 15. and 16.. Slidably mounted on the carriage member 10 is a pneumatic piston type hams inerv motor generally designated 17 herein preferably of a standard type and comprising a cylinder 18 within which a hammer piston 19 of usual form is reciprocably mounted. Suitably rigidly secured to the rear end of the cylinder 18 is a combined cylinder head and valve chest or housing 20 having a cylindrical exterior surface 21 disposed. in sliding contact with an arcuate surface 22 formed on the cradle member 10; thereby forming a guide for the motor 17. Arranged within the valve chest 20 isfausual automatic fluid distribution valve 23 which is adaptedto control the supply of motive fluid flowing through a passage 24 to the motor cylinder 18 and the exhaust of fluid from themotor cylinder through a usualexhaust passage.

25; The valve chest or housing 20 is provided with a cylindrical portion which slidably fits a bore 26 formed within a cap member 27 the member 27 being slidably mounted on the valve housing. A boss 28 projects rearwardly from the cap 27 and is disposed. within the slot in thebracket 13. To limit movement of the valve housing within the cap 27 an air inlet connection 29 is provided thereby efiecting reciprocation of the ham-' mer piston 19. Reciprocably mounted with in the forward end of the hammer mechanism 17 is an enlongated collared pinning out tool or punch'33 having loosely mounted thereon a collar or washer 34. This punch 33 extends forwardly through the slot 16 in the bracket 14. The shank portion of the punch 33 extends rearwardly within the motor cylinder 18 in position to receive impact blows delivered thereon by the hammer piston 19. r

Referring more particularly'to Fig. 4it will be observed that the hammer piston 12 is of the two spooltype and is adapted when disposed in the rear end of the cylinder bore 11 to'have itsannular groove portion adjacent a port '35 with which the motor exhaust passage communicates. A series of flutes or grooves 36 formed on the periphery of the rear spool oflthe piston 12 connects the groove with the rear end of the piston. During running of the hammer motor 17 exhaust fluid flows throughthe port 25, port 35,

through the groove in the piston 12 and through the flutes 36'to the rear end of the cylinder bore 11 and consequently the fluid acting on therear pressure area of the piston 12 moves the latter to its extreme forward position. g p

The hammering mechanism .17 and the cradle member 10 are adapted to be fed manually longitudinally within the guideway 8 and this feeding mechanism comprises a screw 37lthreadedly secured within the boss .28 on thecap member 27 Threade'dly' connected to the'screw37 is an a'djustablestop nut 38. 1 A substantially flat link member- 39 has a leterally bentportion pr'ovided withan opening through whichthe'screw extends. In-

terposed between the stop nut 38 and the bent portion 40'of the link member 39 andencircling the screw 37' is a coiled spring 41 and this sp r'ing normally tends to. maintain the portion 40 and the cap member 27 in engagement and to hold the collar on the tool 33 and the'washer 34 away from the bracket 14 on the carriage. This link 39 extends forwardly of the mechanism and is pivotally connected at 42 to a lever 43, the latter in turn being pivotally connected at 44 to an arm 45 on the base 4. Carried on the forward end. of the link 39 is a depending arm 46 adapted to engage upon movement of the link a valve stem 47 (see Fig. 6) of an end seating valve 48 engageable with a valve seat 49 formed within a valve housing 50, herein preferably formed integral with the carriage member 10 at the forward end thereof. The valve housing 50 has stepped bores 51 and 52, the juncture of which provides the valve seat 49. The stem 2 47 is provided with a reduced portion 53and is adapted to control in atmospheric exhaust port54 communicating with'the bore 52. As 7 the connections 29 and 57 are'in turn connected through a pipe connection 58 to a pressure fluid supply line 59.

In accordance with .this illustrative embodiment of the invention the pneumatic clamping mechanism or vise specifically comprises'a diaphragm chamber 60 formed within the pedestal 4 at the upper end thereof and extending completely across this dlaphragm chamber is a horizontal flexible diaphragm 61 having its outer edge clamped by means of a plate 62 and bolts 63 to the upperportion of the vpedestal. As shown in Fig. 4 the lower surface of the diaphragm 61 engages a horizontal flat disc shaped member or plate 64 having threadedly connected thereto at 65 a vertically movable plunger 66, the latter being guided within a bore 67 formed within the pedestal. The lower end of the plunger. 66 contacts with one armof a lever 68 pivoted at 69 on a horizontal axis on the arm 45.

The other arm of the lever 68 contacts with the lower end of a movable Vise member'or jaw 71 guided forvertical movement with in a bore 72 formed within an upstanding U-shaped portion73 carried by the arm 45.

As shown in Fig. 3 the ,U-shaped portion of the frame is open at one side to permit the i lateral insertion of a steel between the vise aws or the removal of a steel from the j Disposed within a chamber formed within the arm 45 and engaging the upper surface 7 thereof is a coiled spring 74 surrounding the movable vise member 7 land engaging a transverse pin 75 carried by the vise member. The spring 74 constant-1y tends to force the vise jaw-71 downwardly into itsreleased position. The movable vise member 71 has formedson the upper surface thereof a iV-shaped'notch v7 6 which is adapted toreceive and-position a usual hollow rock drill steel 77. The upper stationary vise j aw comprises a detachable plate or abutment 7 8 rigidly held in place by means of a bolt 79. Pressure fluid is adapted to be supplied to the diaphragm chamber from the supply connection 59 through a. pipe connection under the control of a usual valve 81. The valve 81 is adapted to admit fluid to the diaphragm chamber and to cutoil' the flow of fluid'to the chamber and vent the latter to atmosphere.

Inthe operation of the improved punching mechanism, assuming the parts to be in their withdrawn position as shown in. Figs. 1 and i,

the operator will first place the steel 77 withinthe V-shaped notch 76 in the lower vise aw and upon suitable manipulation-of the valve 81 pressure fluid will be admittedto the diaphragm chamber 60, the fluid acting on the diaphragm 61 moving the plunger 66 downwardly. The lever 63 then swings about its pivot and consequently the lower vise jaw 71 is moved upwardly, rigidly clamping the hollow drill steel 77 in position against the top. plate 78. The operator-will then grasp the lever 43 and move the link 39 forwardly thereby moving the carriage memberlO and the hammer mechanism 17 thereon forwardly within the guideway 8 to cause engagement of the punch 33 with the drill steel 77. Upon engagement ofthe punch33 with'the steel 7 7 the collar'on the punch prevents further forward movement of the hammer mechanism 17 and consequently as the operator continues to pull the lever43 the cradle member 10 and consequently the cap member 27 move forwardly relative to the ham-mer mechanism 17 and also to cause the valve 3lito move within the bore 32- thereby permitting flow of pressure fluid to themotor cylinder 18. This will cause the piston 19 to be rapidly reciprocated to impart a series of impact blows to the punch 33 an-d'exha-ustfluid from the motor cylinder 18then-flowsth-rough the ports% and 35, through thegroove in the piston 12, and through the flutes 36 to the rear end ofthecylinder boreill-r Due tothe fact 7 that the motorexhaust pressureat all times is far above atmos'phericpressure the piston 12 will be forced to the front endof the cylinderbore 11. However, the normal exhaust and consequently the punch 33 is fed for-' wardly as the-hole in the drill steel is'opened. During withdrawal of the punch the operator will swing the lever 43 rearwardly, consequently moving the link 39 rearwardly "and due to compression of the spring 11 there will be substantial lost motion betweenthe bent portion 40 of'the link and the nut 38, the

valve 4=8vwill be unseated, thereby allowing,

communication between the bore 51 and the passage 55 whereupon a sudden flow of pressurefluid from the supply connection 57 to the cylinder bore 11 by way of the passage 55 will cause the hammerpiston=12 to be driven suddenly rearwardly' to impinge with great force against the rear'end wall of the cylinder bore. During this time the collar on the punchi33 and the washer 3 1 will :be engaged with the upstanding lug 1 1 and the impact action of the hammer 12 will lie-transmitted through the carriage member 10 and the lug 14 to the punch 33 to cause withdrawal thereof from the steel. After the punch 33-is withdrawn from the drill steel thevalve 81 is again manipulated andthe fluid in the diaphragmchamber 60 is exhausted to "atmosphere. The spring 74 then forces the lower vise j aw 71 downwardly into its released position thereby permitting the operator to re-;

move the steel from the vise. These and other operations and'uses-ofthe impreved punchingmechanism will be clearly apparent to those skilled in this art.

While I have in this applicationspec-ifically described one form which my invention may assume inpractice, it will be understood thatithis form of the same isshown for purposes of illustration and that the invention may be modified'and embodied in various other forms withoutdeparting-fromits spirit or. the: scope of theappended claims.

What I claim as new and desire tosecure by Letters Patent is:

1. Ina punching mechanism, a guideway,

a carriage slidable on said guideway,,a hammer mechanism movablymountedonsaid carriage, and means for manually feeding said hammer mechanism and carriage relative to said guidewaycomprising"an actuatingmember extendlng longitudinally of' the carriageand having a laterally bent portion normally engaging said carriage, an abutmentcarried by said hammer mechanism, and a coiled springinterposed between said bent portion and said abutment to for'm a resilient connection between said actuating member and said hammer mechanism and between said can. riage and said hammer mechanism.

I :2. In; a punching mechanism, aguideway,

a carriage slidable on said guideway, a hammer mechanism including a cylinder and piston movably mounted on said carriage, a collared pinning tool mounted in and actuated by said hammer mechanism, said carriage having upstanding brackets supporting said hammer mechanism, a Washer loosely mounted on said pinning tool and interposed between the collar thereon and the adjacent one of said brackets, and means for moving said carriage relative to said hammer mechanism to cause said adjacent bracket to transmit retracting force to the collar on said pinning tool.

3. In a punching mechanism, a frame presenting a guideway, a carriage slidably mounted on said guideway, a hammer mechanism movably mounted on said carriage, and

means for manually feeding said hammer mechanism and carriage relative to said guideway comprising a lever pivoted on said frame, and anactuating rod pivotally connected to said lever having an operative connection with said carriage and an independent direct resilient connection between said actuating rod and said hammer mechanism.

4. In a punching mechanism, a frame presenting a guideway, a carriage slidable on said guideway, a fluid actuated hammer mechamsm movably mounted on said can rlage, a fluld actuatedvlse on said frame for clamping a steel in position to be acted on by said hammer mechanism, and means for manually feeding said hammer mechanism and carriage relative to said guideway comprising a lever pivotally connected to said frame, and an actuating rod pivotally connected to said lever having an operative connection with said carriage and an independent direct resilient connection between said actuating rod and said hammer mechanism.

5. In a punching mechanism,a frame presenting a guideway, a carriage slidable on said guideway and having a hammer mechanism carried thereby, a secondhammermechanism movably mounted on said carriage, and means including a lever resiliently connected to said second mentioned hammer mechanism for feeding the latter forwardly and for retracting said second mentioned hammer mechanism to effect operation of said first mentioned hammer mechanism.

6. In a punching mechanism, a frame presenting a guideway, a carriage slidable on said guideway, a hammer mechanism carried by said carriage, asecond hammer mechanism movably mounted on said carriage, and manually operable means includlng a lever pivotally connected to said frame and resiliently connected to said secondmentioned hammer 'mechanism. for moving the latter forwardly to effect a pinning out operation on a drill steel and for retracting said second mentioned hammer mechanism to effect operation of said first mentioned hammer mechanism.

7 In a punching mechanism, a guideway, a carriage slidable on said guideway, said carriage having an upstanding slotted bracket thereon, a hammer mechanism including a cylinder and piston movably mounted on said carriage and having a collared pinning tool extending through the slot in said bracket, and a washer loosely mounted on said pinning tool and interposed between the collar thereon and said bracket.

8. In a punching mechanism, a guideway, a. carriage slidable on'said guideway, said carriage having an upstanding slotted bracket thereon, a hammer mechanism including a cylinder and piston movably mounted on said carriage and having a collared pinning tool extending through the slot in said bracket, a washer loosely mounted on said pinning tool and interposed betweenthe collar thereon and said bracket, and means for moving said carriage relative to said hammer mechanism to cause said bracket to engage said washer and transmit a'retracting force to the collar on said pinning tool.

9. In a punching mechanism, a guideway, a carriage slidable on said guideway, said carriage having an upstanding slotted bracket thereon, a hammer mechanism movably mounted on said carriage and having a collared pinning tool extending through the slot in said bracket, a washer loosely mounted 011 said pinning tool and interposed between the collar thereon and said bracket, means for 'moving said carriage relative to said hammer mechanism to cause said bracket to engage said washer and transmit a retracting force to. the collar on said pinning tool, and means for imparting a blow tosaid carriage to effect movement of said pinning tool in one direction. V

10. In a punching mechanism, a guideway, a carriage slidable on said guideway, said carriage having an upstanding slotted bracket thereon, a hammer mechanism including "a cylinder and piston movably mounted on said carriage and having a collared pinning tool extending throughthe slot in said bracket, and a washer loosely mounted on said pinning tool and interposed between the collar thereon and said bracket, and resilient means forming a connection between said hammer mechanism and said carriage normally maintaining said bracket out ofcontact with said washer and collar. i 3

11. In a punching mechanism, a frame presenting guideway, a' carriage; slidably mounted in said guideway, a unitary pressure fluid operated hammer mechanism mounted on said carriage so as'to permit a limited longitudinal movement relative to said carriage, an actuating member adapted to engage-said carriage for moving said carriage and hammer mechanism along-said guideway, and resilient means for normally holding said hammer mechanism in one of its extreme positions relative to said carriage, said resilient means also forming a resilient connection between said actuating member and hammer mechanism.

12. In a punching mechanism, a frame presenting a guideway, a carriage slidably mounted in said guideway, a unitary pressure fluid operated hammer mechanism slidably mounted on said carriage, a punch carried by and actuated by said hammer mechanism said punch having a collar thereon, an abutment fixed to said carriage adapted to act upon said collar to withdraw the punch from its work, resilient means forming a connection between said carriage and hammer mechanism normally maintaining said abutment away from said collar, and means for manually feeding said carriage and hammer mechanism relatively to the work.

In testimony whereof I affix my signature.

WADE H. WINEMAN.

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