US1415246A

US1415246A - Metal-punching machine

Info

Publication number: US1415246A
Authority: US
Inventors: George P Kline
Original assignee: Williams White and Co
Current assignee: Williams White and Co
Priority date: 1919-10-27
Filing date: 1919-10-27
Publication date: 1922-05-09
Anticipated expiration: 1939-05-09

Description

Patented May 9, 1922.

l 2 SHEETS-SHEET 2.)

G. P. KLINE METAL PuNcHlNG MA APPLICATION FILED OCT. 2

I v 3d f l l /VIVA fg citizen oi the United States,

GEORGE P.

ar is .il a,

COIVIPANY, OE FIOLNT, ILLENOIS.

METAL-PUNCHING WEACHINE.

iaiaaie.

llpplicatoniiled ctober 2'7, 1935. Serial No. 333,744.

To all fw from. t may concern Be it known that l, lnonen P. limits, va residing at Moline, in the county oic Rock island and State of illinois, have invented certain new and usetul improvements in Metal-Punching Machines, of which the following is a specification.

My invention. has reference to metal punching machines, and more specially to that class of such devices Which are known as multiple punches, wherein a plurality of the punching tools are supported and arranged in the inacl'iine so as to be operated in unison. is it is frequently necessary to change the position oit the tools longitudinally ot the supporting head or ram, it is essential that they shouldbe held iii-place in such a manner that they can be readily loosened, for the purpose ot adjustment, or completely detacl'ied, it desired.. it the same time the `.node et attachment oit the tool holdeito the operating head must he such as to enable such tool-holder to withstand all. the strains consequent upon the punching operation, and especially Athe stripping strain which accompanies the upward movement ot the head.

ln former machines oit this class it has been usual to connect the punch-holder with the operating tace of the ram hy means of belts, twoI or more of such fastening devices being employed tor that purpose, and in some cases only one in connection with what suoli detent having an engagement in a channel longitudinally of the. ram. The bolts employedv are frequently di'liicult or access, and require considerable labor and time ior removal and replacement. rllheir use also calls for a specially constructed channel in the movable head, and entra holt sustaining parts en the punch holder.y @ne of the purposes of my invention is to do away With the use et 1eolts entirely, and connect the tool-holder with the operating tace or' the rain in such a vWay that it can be is termed a detent,

quickly and easily released therefrom. rllhe manner oi construction and means rer attachment oi the tool-holder also make it possible to greatly simplify the form thereot'. without detracting from its efficiency.

Another requirement oit a machine of the Specification of Letters Patent.

' particularly bolt has been used,

Patented May 9, 1922.

class mentioned, is that all of the punches .must be held in alignment longitudinally oi the head, so as to coincide at all times with their several dies, and my device is adapted for holding them i'irmly, against movement transversely of the head. i

` rl`he invention is also constructed and arranged so that it can be quickly secured in place 'from that side of the machine most accessible to the operator. l/Vhen attached, the punch-holder is entirely below the operating face ot the movable head, instead ot projecting upwardlyalong one or other of the side :faces of such head, as is they case in some other punching machines.

ln'my device the punch-holder is readily slipped into position at its inner end, and is held therein by a clincher grip or lock, which holds the same rigidly against any movement transversely 'or the movable head, and eliminating the use ot holts or other attachments usually employed ,for that purpose. The opposite end of the tool-holder is connected v-:ith thehead by movable attachments, which are secured to the holder in such a ivay that they cannot become disconnected and displaced, when not in use.

The above, and other features and advantages ot my invention will more fully` appear 'trom the 'following specification, referencel heing companying the same, in which:

l shows my invention in side yelevation, `with a fractional part of the movable head et the machine shovvn in section.

Fig. Q is a plan view of one of the punchholder units.

Fig. 3 is a view, similar to Fig. l, showing a mod'iied construction of the device.

Figs. Ll and 5 are details of the cam membei' 25, in side elevation and edge vievv, respectively.

Fig. 6 shoivs a modified holder tongue.

'ihere are illustrated in said drawings only such parts Aoie the machine as are involved in the present application, similar structural' parts being indicated therein by corresponding reierence characters. rlhere are portrayed in the drawings and set out in the specification hereimtlie ypreferred embodiment of the device, with some modified form oi the toolhad to the drawings ace, in which is heid forms which have occurred to the applicant, it being' understood that he does not necessarily confine himself thereto, but that other changes in the form and arrangement of the parts thereof may be obvious to those skilled in the art to which this device belongs, without departing fromv the general scope and spirit of the invention.

1 represents a portion of what usually comprises the lower end of a movable ram, or

cross-head, with 'which the punch-holdersA are connected, in spaced-apart relations, said head being provided at one of its sides with a 'downwardly projected extension 2, in one face of which is a longitudinal recess 3, the lower face l of which has a downward and inward inclination. 1n the usual arrangement and operation of such machines, the extension 2 would be located on the inner edge of the head 1, or farthest from the operator, with the recess 3 disposed toward the front of the machine.

A tool-holder5 is provided with a socket the upper part of a punch 7, at the upper end of which is a head 8, preventing movement of the tool downwardly in the holder. At one of the ends of the toolholder is a. tongue 9, the lower face of which conforms to the face t of the recess 3, when the tool-holder is in operative contact with the lower face of the head 1, as shown in F ig. 1. At the opposite side of the holder 5 is a pair of downwardly projected ears 10, supporting a pivot 11, upon which is f' swingingly mounted an Varm 12, which passes upwardly through an opening 13 in the bottom plate of the part 5, and is provided at its upperend with a hook-like ein tension 14, adapted for engagement with a longitudinal rib 15 on the face of the head 1. The Lipper face 16 of the rib 15 is preferably disposed downwardly and inwardly similarly to theface l of the recess 3, said face 16 providing a supporting ledge for any desired number of the hook members 12. The extension 14 of said hook member is fitted with a set-screw 17, the end of which has a bearing against the face 1G, and by the operation of which the engaging faces of thehead 1 and punch-holder 5 can be drawn tightly together.

The vtool-holder is applied to the head 1 by first securing the tongue 9 in the recess 3'which is accomplished by inclining the tool-holder and introducing the tongue into the recess, at the same time rocking the tool- ,holder forwardly into position, in engagement with the head 1. When the faces of the parts 1 and 5 are in contact the lower face ofv the tongue 9 is also in close engagement with the lower face f1 of the recess, making it impossible to remove said tongue laterally of the head, except by a reversal of the movement by means of which it was inserted in the recess. rllhe engagement of said coacting faces of the tongue and recess is in effect a clincher grip, locking the tongue 9 from release, and holding the member 5 firmly from movement with relation tothe head 1, transversely thereof. 1t will be obvious that movement of the tool-holder toward theinner face of the head 1 is equally impossible. A series of punches in which the Vtools have been properly aligned will be ening the screw 17, suiiciently to permit av movement of the holder longitudinally of the head 1. To detach the same, the arm 12 is swung away from the head until it yclears the ledge 16, when the tool-holder can be detached, in the manner hereinbefore set forth. 1n the operation of inserting the tongue 9, or removing the same, a little clearance is required for the inner end thereof, and this is provided by a channel 3a in the lower face of the head 1, just above the recess 3.' The face of the extension 2 which is adjacent to the tool-holder is also beveled, or otherwise cut away, as at 18, to ,permit free move-ment of the outer end of the toolholder downwardly.

The tool-holder is provided with theusual gag-block 19, if desired, which is held normally between the head of the punch and the operating face of the head 1,1such block being slidable in the tool-holder, and provided with a frame extension 20, on the outerend of which is a. handle 21. permitted the necessary amount of movement within the frame 20, and such'frame is also allowed the necessary sliding movement without interference from said'arm.

In Fig. 3 is shown a modiiiedform of the device, wherein the recess 3 is provided with a curved lower face'22, the lower face of the tongue 9 conforming thereto. As in the former construction, the tongue can be rolled into or out of position by rocking the tool- The arm 12 is l lio holder, and the tool-holder will be locked from release when held in close contact with the head 1.l 1n this construction the toolholder is shown with a pivot 23 fixed in the sides thereof, upon which is mounted an arm 24:, having a bent upper end in which pivoted an eccentric cam 25, adapted for engagement with the upper face of the rib 15, to hold the parts 1 and 5 tightly together,

the side pieces of the trame 2O are provided with slots 27, to permit a sliding movement of said trame.

In Fig. 6 the tongue 9 is shown provided with a tace 2S, which is parallel with'the lower face oli' the tongue, and which will permit the seating of said tongue in the recess 3 without cutting away any portion of the lower face ot the head l.

In the punching operation the 'torce of the head l is directed downwardly through the gag-block 19 and punch 7, the punch-holder maintaining said parts in their proper relations, and preventing any movement thereof out of a direct line. In the return movement ot' the head l, any tendencyy of the stress which results from stripping the worlr from the punches to detach the tool-holder from the head is overcome by the extension 9, firmly supportedon the ledge et at one side of the line et action ot the machine, and the swinging hook in engagement 'with the ledge 16 on the other side ot said line ot action,

It will be apparent that by reason oit the swinging hook-members having a pivotal connection with the tool-holder, there is no possibilityv of such parts becoming lost or mislaid. Such parts could be also slidably mounted in the tool-holder, or otherwise mounted therein so as to be permitted the desired movement with relation to the head 1.

When the handle ot the cam 25 is forced inwardly to a sufficient extent, it operates to lock the cam in engagement with the rib 15 against the accidental release thereof. The upper face ol' the rib 15 can also be made horizontal, if desired, or ot other forms.

lVhat I lclaim, and desire to secure, is:

1. In a device ot the class described, a movable member having` a recessed eXtension the lower side ot the recess having a downward and inward inclination; a toolholder provided with a. tongue adapted for engagement with said recessed extension; and means for attachment of said tool-holder to said movable member, at a point other than said extension.

2. In a device of the class described, a. movable member having a recessed extension on its operating tace the lower side of the recess having a downward and inward inclination; a tool-holder with a tongue at one oi' its ends adapted to engage and lock in said recessed extension; and means at the other end of said tool-holder tor the attachment thereot1 rigidly to the 'face of said movable member.

3. In a device ot the class described, a movable member having an operating Atace` adapted for the support ot a tool-holder, and provided with a recessed extension the lower side of the recess having a downward and inward inclination; a tool-holder provided at one end with a tongue adapted Jfor engagement with said recessed extension, and at the other end with a hook member, adapted tor connection with said movable member.

l. Inv device oit the class described, a movable member adapted for the support or" a tool-holder, and provided at one of its sides with an. extension having a recess the lower side of which has al downward and inward inclination; and at the other side with a laterally projected rib; a tool-holder provided at one end with a tongue adapted to engage said recessed extension and at the other with a hook adapted to engage said rib; and means carried by said hook 'for clamping said movable member and said tool-holder tightly togethen 5. In a device. oi the class described, a movable member provided at one of its sides with a downwardly projected extension having a recess in its inner tace, and at the other side with a lateral rib, the lower side of said recess bein@ inclined downwardly and inwardly; a tool-holder provided at one of its ends with a. tongue adapted tor engagement with said recessed extension, and at the other end with a hook member adapted for engagement with said lateral rib; and means carried by said hook member for clamping a tool-holder rigidly against the operating :tace ot' the movable member. i

6. In a device ot the class described, a movable member adapted tor the support ot a tool-holder, having along one side ot its operating tace an extension provided with a longitudinal channel, the lower side-ot which isl inclined downwardly and inwardly; and along the other edge with a laterally projected rib; a tool-holder provided with an extension capable ot engagement with said channel by a rocking movement, and locked therein when the tool-holder is in operative contact with the Jface of said movable member; and a connecting member movably carried in the opposite end of the tool-holder trom said extension, and adapted for engagement with said laterally projected rib.

7. In a device of the class described, ay movable member adapted for the support of a. tool-holder, provided at one of its sides with a recessed extension the lower side of the recess having a downward and inward inclination, and at the opposite side with a laterally projected rib, said recess and rib being provided with similarly disposed sup-- porting ledges; a tool-holder` provided at one end with a tongue adapted for engagement with said recess, so as to be held therein with a. clincher grip, and the opposite end with a movable hook member adapted for engagement with the ledge of said lateral rib, the engagement ot said tongue and movable hook with said movable member op- @rating to hold said tool-holder in engagement with the working face of said movable member; and means for clamping said toolholder and movable member in closed operative relation with each other.

8. In a device of the class described, a movable member' adapted for the support of a tool-holder, provided at one of its sides with a recessed extension, and at its opposite side with a. laterally projected rib, said recess and rib being provided with similarly disposed downwardly and inwardly inclined faces forming supporting ledges; a toolholder provided at one end with a tongue adapted for engagement with the ledge ofy said extension, so as to be held therein with a clincher grip, and at its opposite end with a swinging member having a projection adapted for engagement with the ledge of said rib; the engagement of said tongue and swinging member operating to hold said tool-holder in approximate contact with said movable member; and means carried by sai d swinging member ttor clamping said toolholder and movable member tightly together.

9. In a metal punching machine, a movable member designed ior the support of a tool-holder, provided with longitudinal supporting ribs on opposite sides of the line'of motion ot the tool, having downwardly and inwardly inclined supporting faces; means for detachably connecting said tool-holder with one of said ribs; an outwardly curved hook memberV adapted for engagement with the other of said ribs; and a clamping device carried by said hook member, and adapted a tool-holder,.provided at one of its sideswith a downwardly projected extension, recessed in its inner face, and at its opposite side with afsupporting ledge, the lower side oi' the recess being downwardly andy in* wardly inclined; a tool-holder providedat one oi' its ends with means for engagement with said extension; a movable hook mem ber at the opposite ,side of said tool-holder, adapted for engagement with said ledge; and a cam device carried by said vhook mem` ber, also adapted for engagement with said ledge, to clamp said movable member and tool-holder tightly together.

1l. Ina metal punching machine, a mov able member, adapted for the support of a tool-holder, provided at one of its lower edges with a downwardly projected exten sion having a detent channel in its inner face, the lower wall of which recess is inclined downwardly and inwardly, and at the opposite edge with a laterally disposed rib; a tool-holder having a detent extension for engagement ywith said channel; a hook member movably mounted in the opposite yend of said tool-holder and adapted for engagement with said lateral-rib; and a gag-block slidable in said tool-holder, said hook-member and gag-block having free operative movement with relation to each other.

ln testimony whereoffl atliX my signature.

GEORGE P. KLINE;