US1427521A - Upsetting dies - Google Patents

Description

W. L. CLOUSE.

UPSETTING DIES.

A'PPLICATIONFILED FEB. 21. 1920.

Patented Aug. 29, 1922.

Inventor r Witnesses Attorneys W. L. CLOUSE.

UPSETTING DIES.

APPUCATION FILED FEB. 27. I920.

. Patented Aug. 29, 1922.

2 SHEETS-SHEET 2.

Inventor Witnesses W V i E Attorn sys UNITED STATES PATENT OFFICE.

WILLIAM :L. CLOUSE, or TIFFIN, 01110, ASSIGNOR TO THE NATIONAL MACHINERY 00.,

or TIFFIN, c1110.

UIPSETTING DIES.

To all whom it may concern:

Be it known that 1, WILLIAM L. CLoUsn, a citizen of the United States, residing at Tifiin, in the county of Seneca and State of Ohio, have invented new and useful Upsetting Dies, of which the following is a specification.

The present invention appertains to upsetting dies for forging machines, and aims to provide a novel and improved device of that character which will enhance the utility of such devices. 7

One of the difiiculties in upsetting hot stock, is the tendency of the stock to buckle before it will upset, and if the. length of the upset portion exceeds a certain limit, difiiculty has alwaysbeen experienced in the past with the upset buckling and forming a fin between the dies, instead of the stock upsetting or filling out the die impression as desired. This has been especially troublesome when making an upset on a bar at some distance from the ends of the bar. The present invention overcomes the foregoing and other objections by so constructing the dies as to prevent the buckling of the stock, and to restrain the stock to upset properly.

It is also within the scope of the invention to provide improved upsetting dies. of the nature indicated, which are of simple construction, which can be used in present day forging machines to advantage, and which will serve their oflice in a thoroughly practical and eflicacious manner.

With the foregoing and other objects in View which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

The invention is illustrated. in the accompanying drawings, wherein A Figure l is an elevation showing the dies separated with the stock introduced therein.

Figure 2 is a similar view showing the dies moved together to form the upset in the stock.

Figure 3 is a fragmental elevation of the stock showing the upset thereof.

Serial No. 361,735.

Figures 4 and 5 are perspective views of the guide plates of the dies.

Figures 6 and 7 are perspective views of the sections of the movable die.

Figures 8 and 9 are perspective views of the sections of the stationary gripping die.

Figure 10 is an elevation of a modification showing the dies in position to form the upset.

Figure 11 is a fragmental elevation of the stock showing the upset made by the modified form.

Figures 12 and 13 are perspective views of the sections of the movable die of the modification.

Figures 14 and 15 are perspective views of the sections of the stationary die ofthe modification. A p

The invention includes a stationary gripping die 1, and a movable gripping die 2, which are disposed between a pair of guide plates 3 for guiding and holding the dies in the usual manner in a forging machine. The plates 3 are provided at certain ends thereof with longitudinal ribs 4 having overhanging guide flanges 5 for guiding the movable clie for longitudinal movement to and from the stationary die. The stationary die 1 is disposed between those end portions of the plates 3 remote from the ribs 4, while the movable die is disposed between those end portions of the plates having said ribs.

The movable die 2 is composed of two mating sections or parts '6 and 7, which as illustrated are of duplicate construction, but in reversed positions. The adjacent faces of the sections 6 and 7 are provided with com plementing longitudinal channels 8 for receiving the stock, and the sections 6 and 7 are provided with longitudinal grooves 9 receiving theguide flanges 5, whereby to guide the respective die sections along the guide plates 3, one of said die sections being carried by each of said plates. The sections 6 and of the movable die are provided with longitudinally projecting extensions 10 and 11, respectively, of reduced cross sectional area, and which are diagonally opposite one another when the sections 6 and 7 are disposed face to face. The grooves 9 extend along the extensions, since said extensions are flush with certain sides of the sections, and the extensions 10 and 11 are provided i Specification of Letters Patent. Patented Aug. 29, 1922.

Application filed February 27, 1920.

in the art.

with the respective upset recesses 12 and 13.

The stationary gripping die 1 is also cornposed of two mating sections or parts, designated 14 and 15, and the adjacent faces of said sections'are provided with complementing longitudinal channels 16 for the introduction of the stock into the dies. The sections 14 and 15 are provided with the respective longitudinally projecting extensions 17 and 18 of reduced cross section, and flush with certain sides of the sections. These extensions are diagonally opposite one another when the die sections are disposed face to face, and said extensions are provided with the respective upset recesses 19 and 20. p

When the parts are assembled, the extensions of one die are disposed between and overlap the extensions of the other die, whereby the overlapping portions completely surround the die impression or upsetting cavity provided between the dies. Thus, the extensions 17 and 18 of the stationary die are disposed between and overlap the extensions 10 and 11 of the movable die, whereby the recesses 12, 13, 19 and 20 cooperate to provide the die impression or upsetting cavity, which is usually of larger outline than the channels for receiving the stock between the sections of the dies. -The recesses may be of diiferent formations, in order that various shapes of upsets can be formed, as will be apparent to those skilled Various dies can be used interchangeably for upsetting different sizes and shapes of stock, and for producing various sizes and shapes of upsets, all of which is within the province of the skilled mechanic.

In operation, the movable die 2 is spaced from, the stationary die 1 before the upset is formed, the stock, which in the present case, is a bar 21, being introduced through the; channels 16 of the stationary die and entering the channels 8 of the movable die so as to extend longitudinally through the die impressions. The plates 3 are pressed together so that the dies grip the stock or bar 21, and the movable die is then advan'cedby the heading ram so as to moved forcibly toward and adjacent the stationary die, as seen. in Figure 2, whereby the gripped portions of the stock held by the dies will be movedtoward one an- 1 other, to cause that portion of the stock hetween the dies to be enlarged or upset witlr The upset formed by the dies above described is designated 22, and is clearly seen in Figures 2 and The parts are then separated in order that the stock can be removed for a new operation.

By virtue of the overlapping extensions of the dies,'the stock will be disposed between said overlapping extensions, in order that when the dies are forced together, said overlapped extensions will prevent the stock buckling between the dies to such an extent that an imperfect upset is avoided. The overlapped extensions confine the stock therebetween, thus preventing the formation of a iin between the ends of the upset, which results from the buckling of the stock with dies now used. The present dies are especially useful when a long upset is to be formed, but are used to advantage for forming various upsets.

In Figures 10, 12, 13, 1 1 and 15, a simplified construction is depicted, the same using the same gripping plates or blocks 3 as above described, between which the stationary and movable gripping dies 1 and 2 are disposed. The movable gripping die 2 comprises a pair of mating sections or blocks 6 and 7 having the complementing channels 8 in their adjacent faces for the reception of the stock, and said sections or blocks have grooves 9 for the engagement of the guide flanges 5 of the gripping plates 3. The section 6 is provided with an extension 10 of the same width as said section, and flush with the back thereof. The section 7 in this case is devoid of an extension. The stationary gripping die 1' comprises the mating sections or blocks 14;

and 15 provided in their adjacent or meet- 9 mg faces with longitudinal channels 16 for the introduction of the stock. The section or block 15 has a longitudinally projecting extension 18 flush with its back and of the same width, while the section 14 is not provided with an extension. The blocks or sections 6 and 15 are disposed diagonally opposite to one another, whereby the extensions or tongues 10 and 18 are in overlapped relation parallel with one another at the'opposite sides of the die impression.

When the movable die 2 is forced toward the stationary die 1 with the stock introduced in the channels 8 and 16, the extensions 10 and 18 being disposed at the opposite sides and defining the die impression, will prevent the excessive sidewise buckling of the stock 21, which in the present case is a bar, whereby an upset 22 is formed upon the stock. This upset 22 is different from the upset 22 above described, due to the fact that the extensions are provided with plane parallel faces, so as to only limit the upsetting of the stock in two directions, so that the upset will have opposite parallel plane faces, with shoulders at the ends of said faces, and with the edges of the upset curved, as seen in Figure 11. Diiferent upsets can be formed, however-,by providing extensions of different forms, as will be obvious.

Having thus described the invention, what is claimed as new is:

1. An upsetting device for forging machines including opposed guide plates, a pair of contacting stationary gripping dies interposed between the plates at one end and having stock receiving grooves in their meeting faces, an extension on one of the dies, opposed movable gripping dies slidably engaging the guide plates and having opposed stock receiving grooves in their meeting faces terminating in end Walls constituting thrust faces for engaging one end of the stock, and an extension upon one of the movable dies for lapping and slidably engaging the extension on the opposed stationary die.

2. An upsetting device for forging machines including opposed guide plates, stationary dies seated between the plates at one end and having registering stock receiving grooves extending longitudinally of their meeting faces, an extension upon one end of eachof said dies, said extensions being diagonally disposed relative to each other and of reduced thickness, opposed movable dies slidable between the guide plates and having registering stock receiving grooves in their meeting faces closed at one end to present thrust walls for engaging one end of the stock, and an extension upon each movable die, said movable dies being oppositely disposed with their extensions located diagon ally to each other, each extension on the movable dies being adapted to lap the extensions on the stationary dies and to cooperate therewith to provide an enlarged stock receiving space to be filled by the stock when upset.

3. An upsetting device for forging machines including opposed guides, flanged members thereon, stationary gripping dies positioned between the guides and having stock receiving grooves in their meeting faces, said dies being similar but oppositely disposed, an extension upon each of the sta tionary dies, the extensions being located diagonally relative to each other and of reduced cross sectional area, opposed similar movable gripping dies slidably engaging the flanged members and having registering stock receiving grooves closed at one end to provide walls for thrusting against one end of the stock, an extension upon each movable die, said extensions being of reduced cross sectional area and diagonally disposed thereby to lap and slide upon the extensions on the stationary dies, the extensions on the dies working within the spaces provided between the opposed extensions, all of the extensions cooperating to form a space of increased area to receive the upset portion of the stock.

In testimony that I claim the foregoing as my own, I have hereto aiiixed my signature in the presence of two witnesses.

WILLIAM L. CLOUSE.

l/Vitnesses:

WM. E. EHINGER, K NNETH B. CRAM.

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