US1324286A - vlchek - Google Patents

Description

F'. l. VLCHEK.

APPARATUS FOR FORMING DIES APPLICATION FILED MAY 1. 1918.

1 24,286, Pfitented Dec. 9, 1919'.

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Patented Dec. 9, 1919.

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FRANK J. VLCHEK, orctnvnnnnn, OHIQASSIGNOR TO THE VLCHEK TOOL 00., or

CLEVELAND, OHIO, A CORPORATION APPARATUS son FORMING DIES.

, Specificationof Letters Patent.

OF OHIO.

Patented Dec. 9, i919.

Application filed May 1, i918. SerialNo. 231,947.

To aZZ whomz'tmag concern: I

Be it known that I, FRANK J. VLGHEK, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and invented certain new and useful Improvements inApparatus for Forming Dies, of which the following is a specification. i

This invention relates to dies for "drop forge and press work, and has for its principal object to reduce the expense of producing dies. It is oftennecessary to replace worn and injured dies, and by this method dies are forged from a master die by using a small block of steel and removably fixing this to a large block of steel instead of forming a die in a large block of steel, thus saving not only material but also-labor.

Another obj ect of the invention is to save expense in the manufacturingof dies by forging dies in a filler block within a large block of steel from a master die and keying these dies in a large block of steel.

A further object "of theinvention is to forge dies from the same master die for serving as holding dies, and punching and trimming dies.

In order that the invention may be clearly understood, the same will be hereinafter fully line 22 of Fig. 1.

Fig. 8 is a bottom plan view of the master die holding block,

Fig. 4 is a sectional elevation of a pair of die blocks with the dies keyed therein,

Fig. 5 is atransverselsection taken on line 5+5 of Fig. 4, I

Fig. 6 is a plan view of the lower die block,

Fig. 7 is a side view and Fig. 8 a plan view of a forging illustrating the flash left thereon between the dies,

sure, thereby preventing lateral Fig. 9 is a sectional elevation of a master die fixed in a holding block, and a block having a filler block keyed therein,

Fig. 10 is. a transverse section taken on line 10-10 of Fig. 9,

Fig. 11 is a plan view of the lower block with the filler block therein,

Fig-s12 and 13 are side and end views respectively of a holding die, and apunching and trimming die as made in the filler block,

Fig. 1a is a plan view of the holding die in a base block,

Fig. 15 is a cross l5-l5 of Fig. 14.,

Fig. 16 is a sectional elevation illustrating section taken on line .the punching and trimming die, and

Fig. 17 is a view of the tion.

Referring to the drawings, 1 represents the upper block and 2 the lower block for forging dies in accordance with my invention. These blocks are constructed of steel and are fixed in a drop hammer or press in the ordinary manner. is provided with a rectangular recess 3 for receiving a block of steel 4, having formed on its face 5 a pattern 6, which is the master die and is of the same contour as one-half of the forgings to be produced. The master die block at is fixed in the block 1 by means of a key 7, and it is somewhat thicker than the depth of the recess 3, so that its face projects beyond the lower face of the block 1. The lower block 2 is also provided with a recess 8, of the same size as the recess 8, and the projecting face 5 of the master die block 4 is adapted to enter the same when the upper block is forced clownwardly. For forging a die, a block of steel which has'been heated to the proper temperature, is placed within the recess 8 of the lower block 2, and the pattern 6 is forced same in cross sectherein by the downward movement of the upper block 1. As the upper face of the heated block of steel placed within the re cess 8 is below theedge of the same, the sides thereof retain the block of steel under presflow and preserving sharp edges on the face of the die being forged.

Dies having been forged as described from small blocks of steel are indicated by 9.

These dies have cavities 10 corresponding The upper block 1 as the blocks 14 and 15 for making a die,

the die is made from a small block of steel and this small block of steel is fixed within the large block, thereby saving the large block when it is necessary to replace worn or injured dies. As will be understood, the die blocks 14, and 15 are fixed to a drop hammer or press in the ordinary manner.

l/Vhen the forgings, as illustrated by 18, are produced, metal is left between the opposite depressions 19 formed by the punches 11, and a flash of metal 20 is formed on the forgings between the faces of the dies. It is necessary to punch out the metal between the depressions 19, also to cut or trim off the flash from the forgings, and for these purposes, by this method of making dies, holding dies, and punching and trimming dies are also forged from the same master die employed in forging the other dies. In forging said dies, the upper and lower blocks 1 and 2, with the master die block 4 keyed in said upper block is employed as before. A filler block 21 is fastened by means of a key 22 within the recess 8 of the lower block. This filler block 21 is provided with a rectangular tapering recess 23 having depressions 24: at each end. As before, a block of steel, which has been heated to the proper temperature, is placed within the recess 23 and the pattern 6 forced therein. This produces a die 25, having a cavity 26 corresponding to the pattern 6, and bosses 27 formed thereon due to the depressions 24: in the filler block 21. For-holding the forgings 18 in order to punch out the metal between the depressions 19 and preserve the shape of the forgings, the die 25 is fixed in a base 28 by means of screws 29, and this base is fastened to a press in the usual manner. The forging is laid with its flash 20 resting upon the face of the die, and this keeps it vertical for receiving the punch of the press to insure a straight hole. An opening 30 is provided in the holding die 25 for permit ting the punching to fall out, and a guard 31, having an aperture 32 for the punch, is fixed to the base 28 for retaining the forging when withdrawing the punch. For cutting or trimming off the flash 20 from the forging 18, a punching and trimming die, as shown at 33, is formed by cutting off the sides 34; and the ends 35 of the die 25, even The dies 9 are fast-' with its cavity 26. The inner sides 36 of the bosses 27 of the die '25 are undercut, as shown zit-37, for fitting a tongue 38 of a head 39, to which the die is fastened by screws 40. A punch 11 is fixed in the punching and trimming die 33 for entering the hole 12 of the forging. The punching and trimming die 33 is fastened to a press in the usual manner, as is also a lower die block 13, which is provided with a recess 4 1 of the same size and shape as the forging 18 and having sharp cutting edges 45. The forging is laid with its flash 20 upon the die block 43, and the punching and trimming die 33 forced downwardly to shear ofi the flash. i

From the above, it will be seen that diesfor drop hammers and stamping work may be produced at comparatively reduced expense owing to using less material for renewing worn or injured dies, and the producing of forging or stamping dies, holding dies, and punching'and trimming dies, all from the same master die.

Having fully described my invention, what I claim is:

1. An apparatus for forming dies, co1nprising a large block having a recess formed therein, a filler block within the recess of the large block, and the filler block having a recess for receiving a small block to be impressed with a pattern, substantially as described.

2. An apparatus'for forming dies, comprising a large block having a recess, a filler block removably fixed within the recess of the filler block, and the filler block having a recess for receiving a heated block to be impressed with a pattern substantially as described. 7 V 1 3. An apparatus for forming dies, comprising a large block having arecess, a filler block removably fixed within the recessof the largeblock, and the filler blockhaving a recess for receiving a heated block adapted to be impressed with a pattern and then removed from' the filler block to be used as a die, substantially as described.

1. An apparatus for forming dies, comprising a large block having a recess, a filler block removably fixed within the recess of the large block, a small block adapted to be heated and placed within the filler block to be impressed with a pattern and then removed, and means for removing material from the sides and ends of said small block for forming a punchmg and trimmlng die, J

FRANK J. V'LGHEK.

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