US1784745A - Means for effecting rotary operations in step presses - Google Patents

Description

Dec. 9, 1930. E. B. NIER- 1,784,745

MEANS FOR EFFECTING ROTARY OPERATIONS IN STEP PRESS ES Fil d 011- 29, 1926- 4 Sheets-Sheet 1 Dec. 9, 1930. NIER 1,784,745

MEANS FOR EFFECTING ROTARY OPERATIONS IN STEP PRESSES Filed Oct 29, 1926 4 Sheets-Sheet 2 m enfor E. B. NIER I ,784,745 MEANS FOR EFFECTTNG ROTARY OPERATIONS IN STEP PRESSES Dec. 9, 1930.

4 Sheets-Sheet 3 Filed Oct. 29; 1926 HHQNHH HE 930 E. B. NIER 1,784,745 MEANS FOR EFFECTING ROTARY OPERATIONS IN STEP PRESSES Filed Oct. 29, 192 "4 Sheets-Sheet 4 Patented Dec. 9, 1930 UNITED S A- 35 PATENT O C ERNST BRUNO Immora mi GERMANY:

MEAnsfFoR'nrnnc trrnelno'ranrornnn rionsin stun rnnssns" 7 Application filed. October 29, 1926, sen-alive.

- machines only one type of operationsyeither straight-line or rotary, could'be performed and so it Wasnec'essary to'p'erform each type of operations in a separate machine.)

In my invention, lovercome this 'dravvbaclrby providing ina multiple' pressa' rotary jmand'rel on which the Workis carried and Withthis mandre'l I combine means-for exerting radial pressure on the Work While it is rotatingwitlr the mandrel; p

The invention is particularly adapted to be built or fitted in step presses, that is, presses of the type; wherein one "and the same Work-piece passes successively through different operating or Working stages. These operations, however, all take place siinultaneously with respect to different work-pieces, which are moved successively past the individual tools. I

For'instance, Ima-y provide an appliance of this kind in a press for making cupshaped ordished'articles of sheet metal,.-the Work beingcupped, pressed, punched etc. in successive stages by a reciprocating ram as in the usual one-purpose-machines; But Whereas in' such machines it Was necessary to move the Work to another one-purpose machine when it Was desired to perform thereon operations based on rotary motion, as threading, rolling, spinning, cro'zin'g, flang'ing etc.',-that is, two machines were re quiied, in my invention the two machines are combined into a single unit in which both types of operations are performed.

"The necessity of "providing --tvvoor more machines for operating on the same piece of ivork is evidently a'serious draw- .back, particularly in quantity production, involving not only the initial,;maintena1ice and depreciation costs of tWo-machinesbut also 'the "labour" "for attending the second machine' 145,044, and inGermany Npvemb er 7, 1925.

machine to the-other. f

Inmy invention I combine two one-purpose machine's intoa single unit through the medium of an appliance wvhich may be readily fitted to any existing forging machine. f 1 In the drawings a forging machine for performing eight stages of operation on a dish shaped Work is illustrated by way of example,- it being understood that I am not limited to'this or any other type of forging.

In the dra'vvings Fig. 1 is a section ofthe die-headottii machine on the line 1-1 in Fig. 3, V

- Fig. 2 is-an end elevation viewedi'rom the left in Fig. 1, y '1 Fig. 3 is a plan View ofthe head, Fig. 4 is a somewhatdiagrammatic elevation, and

Fig. 5 isa similar plan View, of the comf pletemachineh a I Referring first toFigsp 4 and 5, 1 is the frame of the machine, 2 is the maindriving shaft, 3 is the driving pulley, 4 is a smaller pulley,both .on theshaft 2,5 is a belt on the smaller pulley 4: which imparts rotation to a lay shaft '6, m is a "belt passing round a pulley 7 in the frame 1 and the mandreln Which is rotatably carried on a pin'n in the die head 7) of the machine, and'ajis the ram to which Vertical rrecipro cation is imparted by any suitable means, not shown;

As indicated in Fig. 5, the work is successively moved past eightstations 7w, e0 .w in the table oi the machine, and cri is assumed to he the'station Where an operation requiring ro a y ra f .t wcrk i p f rm d Qb i us y I am estimated 7 a numb s riation s ee tee percentag v. Wher r t ry ocerat en are Pe f ratedstations io to b PiQlTfQ HW-iIa il Stat on the mandrel n. 5

{llhewram aeisfianged at the and is recip'rocated vertically by any suitable means,

"machine" and for moving the Work from one spring Z is deformed at an earlier the springs It.

not shown. A pin 0 with a conical point is inserted in the ram (4 and surroundedby a coiled spring 6 which is inserted between a shoulder in a bore of the ram and a flange above the point of the pin, the point engag ing a recess in the pin a about which the mandrel 'n is rotated. Four pins 9 are screwed into the flange of the ram (1 and springs 70 are inserted betweenthe flange andan annu lus fin which the pins 9 make asliding' fit. Heads 9 are formed on-thelowerends of the pins 9 beneath the annulus f Four, studs 2' are inserted in the annulus 7 and extend downwardly therefrom to, the top of the strip:

per .2 which 'isadapted to slide in the die The flanging tool is asteel roller- 7) on the inner end of a slideo whichis guided in the 7 die head I), Reciprocation is imparted to the slide by a bar 1* and a double-armed lever 1" on a shaft A short link 0- connects the upper eye of the" lever -7 with a forko" which is inserted in the slide 0 with its threaded end 0'. V A ilock nut 1 serves for holding the threaded end in position on the slide 0. In this manner the position of the roller p with respect to the mandrelm is exactly adjusted, Y 1 Reciprocation is imparted to the ,slide 0 in time with the reciprocation of the rani a through a cam t on the ram, Fig. 4, and a double-armed lever 02 which is fulcrumed in the frame .1 and is engaged by thecam t at one end and linked tothe bar r at the other. A spring 4) tends to hold the end'vof the lever 'vengaged with the cam t, The. stripper e is cutaway opposite the slide-0 soas to permit the reciprocation of-theroller p.

The T operation of my improved appliance isas follows: I V a When the work to has been placed on the constantly rotating mandrelnwhich may be elfected by hand or by automatic means, not shown-the ram mdescends and forces down the strippers against the action of its spring Z until it rests on a shoulder in the die head Z). WVhen the cam t reaches the upper end of the lever 22, the roller j). is moved towards the mandrel and flanges the edge of the work w about the bead on the mandrel n. When the flanging operation is finished the ra n at is raised, the cam t allows the roller 2) to recedefrom the workunder the action of thespring 'v" and the strippers ejects the I Work.

My invention has been described in con- VIIBCtIQD Wlth a multiple forging machine and with themachining of a dish shaped article the station or stations at which such rotary operation is, or such operations are, performed maybe arranged asdes red, the flangmg operation atthe statlon e0 b611'1g d8- scribed merely by way of example.

5 I claim:

1. Ina press having arowoftoolsadapted to'perform drawing, punching, stamping, or similar operatlons, apparatus for producing hollow, dished, cover-shaped, 5 or "similar bodies, comprising devices capable ofvertical operations, and a dev ce capable of rotational operation,- said last named a device being adapted for-drawing, rolling, beading, flanging, and the like, and means for controlling and operating saiddevices, wherebyvertical rectilinear operations andv ac-hori'zontal r0- tary operation may be performed simultaneously in a single machine. 3 r

2. Apparatus for producing dished Govershaped orsimilar bodies in combination with i;

apress havinga driving shaft, a rectilinear-1y movable element, a" horizontally adjustable and rotatable tool, a rotatable mandrel, means for rotating said mandrel derivedfrom the driving shaft offthe press and means for imparting movement to the tool comprising a system of arms and levers whose movement is derived from the rectilinearly movable element. i

' 3. -Apparatus according toclaim 2 inwhich the means foroperatingthe system of arms or levers comprises a camrand a spr1ng,sa1d cam bemg secured to the rectllmearlymovable element and descending therewith and head and coaxially with said element, means T 1 for rotating the mandrel,a rotatablefianging tool mounted to slide horizontally on the die head and adapted to cooperate with said mandrel, and means for varying the position of said-,flanging tool with "respect to said mandrel in time with the-motion of said reciprocating element. 7

5.'A machine oft-he character described, comprising a die head,"averticalreciprocable element above the'die head, a mandrel adapted to. support the workand {arranged within the diehead and coaxially'wlth said element, means for rotating'said mandrel, a rotatable 'fianging tool mounted to; slide on the die head and; adapted to cooperatewith saidmandrel,

Cal

and means operably connected with said re eiproeating element for varying the position of said flanging tool with respect to said mandrel in time with the motion of said reoiproeating element. i

In testimony whereof, I have signed my name to this specification.

ERNST BRUNO NIER.

Images