US1436006A

US1436006A - Die

Info

Publication number: US1436006A
Application number: US518518A
Authority: US
Inventors: John F Beans
Original assignee: BEANS SPRING Co
Current assignee: BEANS SPRING Co
Priority date: 1921-11-29
Filing date: 1921-11-29
Publication date: 1922-11-21
Anticipated expiration: 1939-11-21

Description

J. F. BEANS.

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APPLlc/mou FILED Novx 29. 1921.

Patented Nov. 231, 1922.

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JOHN I". BEANS, OF CANTON, OHIO, ASSIGNOR TO THE BEANS SPRING COMPANY, OE'

MASSILLON, OHIO, CORPORATON DF OHIO.

Application led November 29, 1921. Serial No. 518,518.

To all whom it concern.'

Be it known that I, JOHN F. BEANS, a citizen of the United States, residing at Canton, in the county of Stark and State of Ohio, have invented a new and useful Die, of which the following is a specification.

This invention relates to improvements in dies and more particularly to dies for shearing, punching and trimming steel spring plates such as are used for vehicle springs.

With devices of this kind at present in use, it is customary to first shear the steel plates, then punch the center holes therein upon another machine, finally trimming the ends of the plate upon a trimming press, four distinct operations being necessary to complete each spring plate or leaf.

rThe objects of the invention are to provide a die adapted to cold shear, trim and punch steel spring plates or leaves, forming a complete plate or leaf with each operation.

With these objects in view, the invention consists in the construction and arrangement of parts, hereinafter described and illustrated in theaccompanying drawings, it being understood that various changes in the form and details of construction may be made within the scope of the appended claims.

A preferred embodiment of the invention is disclosed in the accompanying drawings, in which- Figure 1 is a side elevation of a portion of a press showing the dies embodying the invention mounted therein, the upper die being shown in its lowered position,aspring plate or leaf being located between the dies;

Fig. 2, a side elevation of the upper die, parts being broken away for the purpose of illustration g Fig. 8, a bottom plan view of the same;

Fig. t, a section on the lines 4-4, Figs. 2 and 3;

Fig. 5, a top plan view of the lower die;

Fig. 6, a section on the line 6 6, Fig. 5;

Fig. 7, a section on the line 7 7, Figs. 5 and 6;

Fig. 8, a longitudinal sectional view through both dies inthe closed position;

Fig. 9, a perspective view of the lower trimming and shearing dies, with one of the trimming` dies removed; and

Fig. 10, a detached, perspective view of one of t-he lower trimming dies.

Similar numerals of reference indicate corresponding parts throughout the drawings.

The device includes the lower stationary die comprising the shoe l which is arranged to be tixedly mounted upon the base or anvil of any suitable form of press, such as is indicated generally at 2, and the upper movable die comprising the punch holding block 3 which is carried in the reciprocating head i of the press and arranged to be moved toward and from the lower die by the operation of the press.

The upper surface of the shoe 1 is flat as shown at the angular guide brackets 6 and 7 being mounted upon opposite sides of the longitudinal center thereof, preferably toward the end from which the stock A, from which the spring' plates or leaves are stamped, is passed into the device.

Forthe purpose of clamping the sto'ck against movement, upon the shoe, as the upper die descends, a lever 10 is pivoted near one end between the brackets 11 which are mounted upon the upper surface of the shoe. This lever is provided with the downwardly disposed, inner end 12 arranged to engage the adjacent side edge of the stock, forcing the stock against the opposite guide bracket 7 when the outer end of the lever is lowered. A counterweight 13 is mounted upon the outer end portion of the lever for the purpose of normally holding the Same in position to engage the stock, a chain 14 connecting the outer extremity of the lever with the reciprocating head a of the press, providing means for raising the outer end of the lever to disengage the inner end thereof from the stock when the reciprocating head is raised.

The shoe 1 is provided at its longitudinal center with spaced intervals with cylindric sockets 15 which receive the punch buttons 16, the upperextremities thereof extending above the upper surface of the shoe. Each of these punch buttons is provided with the downwardly `flared central opening 17 communicating at its lower end with the enlarged bore 1S estending` through the bottom of the shoe.

rlhe lower trimming and shearing dies 19 are located in a socket 2O formed in the upper face of the shoe, each of said dies being of the shape best shown in Figs. 9 and 10, being provided upon their inner edges screws 26 which are passed through thestripper plates 27 and through said blocks and into the shoe. These stripper plates are ofthe shape best shown in Fig. 5, being` provided with the reduced, tapered, inwardly disposed portions 28 located above the tapered portions of the lower trimmingand shearing dies. The stripper plates are thus spaced above the trimming and shearing dies a sutlicient distance to permit the stock to be easily passed beneath the same.

Downwardly flared openings 29 are provided in the reduced portions 22 of the dies 19 and communicate at their lower extremities with the enlarged bores 30 extending through the bottom of the shoe 1. These downwardly flared apertures .provide punch holes to receive the rebound hole punches, as will be later described, the stripper plates 27 being` provided. with enlarged openings 31 above said punch holes to allow the rebound punches to pass therethrough. V

A pair of spaced gaugebars 32 are connected to the end of the shoe opposite from the punch buttons by means of the downwardly disposed angular portions 33, screws 34 or the like attaching` the same to the eX- tremity of the shoe. These gauge bars are located in alignment with the shoe 1, and are provided at spaced intervals with the apertures 35 arranged to selectively receive the screws 36 carried upon the gauge 37 for the purpose of locating this gauge at any desired distance from the shearing and trimming dies necessary for forming spring plates or leaves of different lengths.

The punch holder studs 33 are provided with the enlarged heads 39 received within the countersunlr openings 40 provided in the punch holder plate 41 which is attached to the punch holder block 3 by means of the screws 42 or the like. These punch holder studs are located in' positions corresponding` lwith the punch buttons 16 and with the rebound punch openings 29.

The center hole punch 43 is arranged to be selectively connected to any of the punch studs 38, corresponding with the punch bottoms 16, by means of the punch holder nut 44. The rebound hole punches 45 which are 'similar in construction to the center hole punch, are mounted upon the corresponding punch holder studs by means of similar' punchholder nuts 44.

The upper trimming and shearing .die 46, as best shown. in Fig. 3, is shaped to correspond with the reduced tapered portions 22 of the lower shearing and trimming dies and is connected to the plates 47 as by the rivet 48, said plates being located upon opposite sides of the die, the lower ends thereof extending beyond the bottom of the dies, these plates, together with the die 46, are arranged to be received through thel opening 24 in the shoe, the end portions of the plates being received in the cut-out por-i tions 21 of the lower shearing and trimming dies.

rl`he upper' ends of the die 46 and plates 47 are provided with the beveled flanges 43 which are received in the countersunl; opening 49 provided in the punch holder plate 41, this die being held in position upon the punch block 3 by means of the screws 42 which secure the punch holder plate to the block.

ln operating the device, the reciprocating head 4 is raisedin the usual manner, raisw ing with it the punch block 3 and upper die, and through the chain 14, raising the outer end ofthe lever 10, permitting the stock A to be passed through the device between the guide brackets and7 and beneath the stripper plates 27. 'When the stock is placed in the proper location, the reciprocating head 4 is lowered in the usual manner, the counterweight 13 moving the outer end of the lever 10 downwardly as the chain 14 is slackened, bringing the inner curved extremity 12 of the lever into engagement with the edge of the stock, forcing the same tightly against the bracket 7 and holding the stock against accidental movement as the punch block and upper die engage the same.

It will be seen that with each operation of the device, the centerhole and one rebound hole are punched and one end of a plate is formed and sheared, while at the same time, the opposite end of the next preceding leaf or plate is sheared and trimmed and the center hole punched. After each operation of the device, the stock is fed forwardly through the machine until the end thereof engages the gauge `37. 'A spring plate or leaf is thus completed with each operation of thev device.

lt will be seen that the center hole punch 43 ymay be mounted upon any desired punch holder' stud, the gauge 37 being located accordingly in order to stamp spring leaves or plates of desired length. With the device shown, it will be seen that six different lengths of spring plate or leaf may ne obtained by adjustment of the device.

The advantage over the usual method of forming spring plates or leaves will be readily apparent from the above, as the four separate operations of shearing, trimming,

punching the center hole, and punching the rebound holes are all combined in one single operation of the present device, and a complete spring being formed with each operaion thereof` l claim l.. A device oi. the character described including a Xed shoe, lower trimming and shearing dies near one end thereof arranged to shear and trim opposite ends of two adjacent spring plates, each of the lower dies being` provided with an aperture, a vertically movable block above the shoe, upper shearing and trimming dies arranged to cooperate with the lower shearing and trimming dies and punches mounted upon the upper shearing and trimming dies arranged to engage said apertures to punch the rebound holes in opposite ends of the spring plates.

2. A device of the character described in cluding a fixed shoe, lower shearing and trimming dies near one end thereof arranged to shear and trim opposite ends of two adjacent spring plates, each of the lower dies being provided with an aperture, a punch button near the other end of the shoe, a vertically movable block above the shoe, upper shearing and trimming dies arranged to cooperate with the lower shearing and trimming dies and a punch upon said block arranged to cooperate with the punch button to form the center hole in a spring plate, and punches mounted upon the upper shearing and trimming dies arranged to engage said apertures to punch the rebound holes in opposite ends of the spring plates,

ln testimony that l claim the above, l have hereunto subscribed my name.

JOHN F. BEANS.