US1556847A - Machine for sizing, cupping, and punching rims - Google Patents

Description

oct. 13,1925. 1,556,847

H. W. KRANZ l MAGHINEfFOR SIZING, CUPPING, AND PUNCHING RIMS Filed MEW 24, 1920 2 Sheets-Sheetwl oct. 13, 1925 Filed May 24, 1920 2 Sheets-Sheet 2 @How m Patented Oct. 13, 192.5.

UNITED STATES PATENT OFFICE.

lnamur w. xnANz, or CLEVELAND, omo, AssIGNon. 'ro THE HYDnAUuc rREssEn STEEL COMPANY, OF CLEVELAND, OHIO, A CORPORATION F OHIO.

MACHINE 'FOR SIZING, CUPIEING, AND PUNCHIN'G Application mea raggi, 1920'. 'smak No. 883,765.

Y and useful Improvement in Machines for Sizing, Cupping, and Punching Rims, of which the followin is a full, clear, and exact description, re erence being had to the accompanying drawings.

This invention relates to a novel construction of machine for shaping and cupping rims particularly intended for use in wire wheels, and the object of the invention is to provide a simple and efficient apparatus for quickly and accurately sizing the rim, cuppin the' same to receive the heads of the spo e spindles and simultaneously punching or indenting the reverse side of the cup in order to provide a uniform distribution of metal and prevent splitting or cracking during the cupping operation. With these objects in view the invention consists in the novel features of construction and in the manner of combining or arranging them, all of which will be fully described hereinafter and set forth in the appended claims.

In the drawings forming a part of the specification, Fig. 1. is a view artly in section and partly in elevation isclosing the operative features of a machine embodying my invention; Fig. 2 is a view illustrating partly in section' and partlymin top4 plan a' portion of the machine em .dying m .invention; and Fig. 3 is an enlar edv etail view of one of the cupping 'punc es.

In the practical embodiment of my invention, I employ a suitable base A having a central circular opening A and working through this centra circular opening is a sha t B carryin a plunger C at the upper end thereof, said plungerl being tapered downwardly as shown at C and cylindrical atthe extreme upper end, as shown at C2. This plunger is threaded upon the upper end of the shaft B and moves therewith but can be removed therethrough and a different "plunger substituted when desired. Mounted upon the base A are a plurality of segments D each segment having p ivoted therein an elbow lever E the upper end of which operates upon a -sector F carrying a plural-` ity of cupping punches G and the lower end of this bell crank lever worksbetween and is operated by the collars H adjustably mounted upon ythe shaft B so as to increase i or decrease the movement of the bell crank.

lever as desired and it will be understood that when the shaftV B is moved downwardly the lower end of the bell crank lever will be carried downwardly throwing the upper end inwardly carrying with 1t the punch sector and there being a plurality of sectors each operated by its respective bell crank lever which in turn are all operated at the same time from the plunger shaft, all of the cupping sectors will move inwardly the proper distance at one and the same time.l I

arm I in which is mounted a roller L` which is adapted to be engaged by the tapered or wedge-shaped 'plunger C, saidl y A plunger serving to force the sectors I radially outwardly asthe plunger descends thereby stretching and sizing the rim placed thereon, and `inasmuch as the bell crank levers are -operatively connected with the plunger, the cupping sectors will be forced radially inward y at the same time that the sizing and punchingY sectors are forced radially outwardly and in this manner the series of cupping punches are brought into contact with the rim and a series of cup-like depressions produced in said rim andi in order to prevent the breaking or cracking of said cup-like depressions-during this operation, I provide a punch M in the sector I for each cup, this punch being so arranged The sizing and punching sectors slide upon the segments as shown in Fig. 1 and lthis spring will' serve to 'move the sectors inwardly as the plunger is raised and the bell crank levers move the cupping sectors outwardly.

AA top rmg Ois arranged upon the unch sectors and a guide rlng P 'is arrange cenprick punc trally therein and in which the cylindrical portion of the plungler works as most clearl shown in Fig. 1. he cupping punches are formed with ahead rtion G which can be coupled to a shan G2 b means of a coupling G3 thus enablin t e cuppln punches pro er to be remove and replace when desire .Y Y

In operation, the rim after being rolled to the proper contour is placed wlthin the machine about the sectors I and then when power is applied to the plunger shaft, the plunger is moved downwardly operating upon the sectors I through the medium of the rollers L carried by the arms I', the

first rtion of said operation serving to stretclioand size the r-im and simultaneous with the outward movement of the secto'rs I is the radial inward movement of the cupping sectors F bringing the cuppin punches into contact with the rim, an punching the cu -like de ressions in the base thereof, an pressions are being punched, the inner or convex side of each punch is having a counter de r'ession punched therein by the hes M carried by the sector I. When these. various operations are comcrank leverswithdraw the cupping sectors and the`- l'springs N force the sizing and punching sectors inwardly and the finished rim can then be removed from the machine. Havin thus described my invention, what I c aim is:-

1. In a device of the kind described, the combination with the segments of the outer sectors and means for moving the same, of

when t ese cup-like dethe inner sectors and means` for moving them outwardly, sai-d sectors being movable upon the segments, and a top plate resting upon the inner sectors and springs lnterposed between the inner sectors and the segments.

2. In a device of the kind described, the combination with segments, of the outer segments movable thereon, the inner segments resting upon the segments and having inwardly projecting arms having depending lugs, springs between said lugs and said segments, a top plate restin upon--the inner segments, a gulde ring, a p unger working 1n said guide ring and acting upon the arms of the sectors, and bell-cranks for moving the outer sectors and means connected with the plunger for moving said bell-cranks.

y 3. In a machine of the kind described, the vertically movable plunger, the guide ring inwhich said plunger works,the top plate in which the guide ring is positioned, the inner sectors upon which the top plate rests, the outer sectors, the same.

4. In amachine of the kind described, the combination with the segments,'of the inner sectors movable thereon, the top plate upon said sectors, the guide ring and plunger, means for moving said plunger, and means interposed between said segments and sectors to move 'said sectors inwardl said sectors being moved outwardly gy the In testimony` whereof, I hereunto ailix my signature. y

plunger.

HARRY W. KRAiIz.

and means for operating

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