US1352911A

US1352911A - Apparatus for forming forgings

Info

Publication number: US1352911A
Application number: US314696A
Authority: US
Inventors: Edward J Paque
Original assignee: POLLAK STEEL CO
Current assignee: POLLAK STEEL CO
Priority date: 1919-08-01
Filing date: 1919-08-01
Publication date: 1920-09-14
Anticipated expiration: 1937-09-14

Description

E. I. PAQUE. 'APPARAIUS FOR FORMING FORGINGS.

APPLICATION FILED AUG. 1.1919.

1, 852,9 1 1 I Patented Sept. 14, 1926.

2 SHEETS-SHEET I F 1, I 0 F1 I zzflpnkor:

' A/fazyz W.

E. J. PAQUE. APPARATUS FOR FORMING F ORGINGS.

APPLICATION FILED AUG-.1, I919.

Patented Sept. 14, 1920.

2 SHEETS-SHEET 2- UNITED STATES PATENT OFFICE.

EDWARD J'. PAQUE, 0F CINCINNATI, OHIO, ASSIGNOR TO TIQE POLLAK STEEL COMPANY, OE CINCINNATI, OHIO, A CORPORATION OF OHIO.

APPARATUS FOR romvrmo ronemcs.

Specification of Letters Patent.

Patented Sept. 14, 1920.

Application filed August 1', '1919. Se'rial No. 314,696.

T 0 all whom it may concern Be it known that I EDWARD J. PAQUE, a citizen of the United tates of America,-and' a resident of Cincinnati, in the'county of Hamilton and State of Ohio, have invented a new and useful Improvement in Apparatus for Forming Forgings, of which the following is a specification.

My invention relates to a method and apparatus for forming objects, of varying diameter and with external walls which are located in various planes, froma piece of stock metal which is of substantially uni-,

form diameter and with practically vertical external Walls.

My invention relates particularly to, the

in which Figure 1, is a perspective view of a press embodying my invention and by means of which the process embodying'my invention may be performed.

Fig. 2, is a perspective view of a piece of stock metal from which the article is formed.

Fig. 3, is a perspective view of a gear blank, which may be formed in the apparatus illustrated in Fig. *1.

Fig. 4, is a central sectional view upon an enlarged scale of thegupper and lower dies, the stop block, the punch and the stripper embodying my invention.

Fig. 5, is a view similar to Fig. 4:, but showing the gage block removed.

Fig. 6, is'a view similar to Figs. 4 and 5, but'showing the strippers in the position I being raised and the stop block being inassume in theremoval of'the the bottom die. u

The apparatus embodying my mventlon comprises upper and lower dies A, B, punch D, removable stop block E, and a press upon the base F of whichthe lower die is mounted Fig, 6, but showing the position of theparts which they article from on the ejector k, the laten F is lowered and by the upper platen F of which the upper die and the" punch are carried. The

lower die has in it a central recess b, which communicates with a central bore 6', which is of the diameter of the stem is of an ejector whose head 70 seats in the bottom of the recess 1) and forms with the walls thereof a die chamber which is of the shape of the lower'part of the article H.

Below the bore 1) the die member B has a T slot 6 upon the shoulders of which a pin 72 of ejector arm 70 is adapted to seat. Upon the opposite sides of the die B there are pivotally mounted U shaped arms M which are adapted to engage the upperdie member A in the act of stripping the punch and the upper die from the article which has been formed.

The upper die A has in ita central recess a and a central bore adapted to fit over the punch D When the punch is in its retracted position, as shown in Fig. 7, its end forms with the walls of the upper die a die chamber which is the. complement of the die chamber formed by the upper face of the ejector and the walls of the recess 6, so that" when the upper and lower dies are in con-.

tact with each. otherthese die chambers form aychamber of the shape of the article to be formed.

Upper die A is suspended fromthe platen F by-means of chains a and punch D is carried by the platen. "Between the platen.

and the upper die the removable stop block E is adapted to be seatedfsurrounding the punch. When the removable stop block is between the upper die and the shoulder d of the punch, the lower end. of the punch is seated in the bore of theupper die and iseither-flush with the upper face of the upper die chamber or else projected slightly beyond it;

In carrying out my process, the upper die serted between the shoulder d and the up per die, a piece of 'stock metal, such as the cylindrical piece H, having been placed so that its lower endrests within recess 1) and of the finished article, with the exception that the corners thereof are left in a rounded mounted upon one of the diemembers and:

unfinished condition, such as-shown in Fig. 4. -Then removable stop block E is removed and the die punch D is lowered so that it forms a central 7 recess in the article to be formed and the metal'thus displaced from the center of the article forces the metal at the rounded corners of the article outward so as to fill the spadeslin the die, so asto.

form sharp and uniform corners upon the article. Then the strippers M are placed in en%agement with the upper die, as shown in ig. 6, and the platen is raised. This will cause the punch and the upper die to be sep arated from the article and to eject the article-lwhich falls into the bottom of the press. To eject the article therefrom lever 72 is actuated.

Having thus described my invention, what I claim is 1 1. In an apparatus for formingmetal the combination of a lower die member having a recess conforming to the shape of the walls of a part of the article to be formed, an upper die \member having a central recess andadapted to cooperate with the recess in the lower die member to form a die chamberof the shape of the article to be manufactured, a punch seated in therecess in the upper die member and a removable stop block adapted to hold the punch in a retracted position.

2. In an apparatus for forming metal forgings the combination of upper and lower die members having cooperating" re- 'cesses which form-a die chamben of the shape of.the article to be formed, a punch reciprocally mounted in one of the die members and adapted to force a recess in the article to be manufactured, and strippers adapted to engage the other diemember.

'3. In an apparatus for forming metal forgings the combination of upper and lower die members, having recesses therein adapted to form a die chamben of the shape of the article to be formed, a punch rec1p; rocally mounted in one of the die members, an ejector mounted upon the otherdie member and strippers mounted upon one die member and adapt-edto engage the other die member. s A

- 4." In an apparatus for forming metal forgings, the combination of upper and lower die members having recesses adapted to form a chamber of the sha e of the article to be formed, a punch passing through the upper die member and into the chamber, and a r'emovablestop block adapted to fit between the upper die member and" a shoulder .upon the punch. m I

5. In an apparatus for forming metal forgings the 'cpmbination of upper and lower die members having recesses therein adapted to form a die chamber of the-shape of t e article to be formed, the lower member having a downwardly projecting bore communicating with its recess, a punch reciprocally mounted in the upper die mem- .ber, an ejector having a head seated upon the bottombf the recess in the lower die member, the upper face of the head. forming. the lower wall of-the die chamber and hav- EDWARD J. PAQUE.