US1866595A - Metal working press - Google Patents

Description

y 1932- R. w. GLASNER ET-Al. 66,595

METAL WORKING PRESS Filed Nov. 29. 1929 4 Sheets-Sheet 1 Ju y 9 R. w. GLASNER ET AL 1,866,595

' METAL WORKING PRESS Filed Nov. 29, 1929 4 Sheets-Sheet 2 y 1932- R. w. GLASNER ET AL 1,866,595

METAL WORKING PRES S Filed Nov. 29, 1929 v 4 Sheets-Sheet 3 y 1932- R. w. GLASNER ET AL 1,866,595

METAL WORKING PRESS Filed Nov. 29, 1929 4 Sheets-Sheet 4 2X9 meme July 12, 19325 UNITED s'r 'ra-s PATENT- OFFICE. 7

RUDOLPH W. GLABNEB AND FRIEDRICH J. RUDE, OFGHICAGO, ILLINOIS RETAIL WORKING PRESS Application filed November as, 1929. Serial No. 410,317.

:8 of the invention is to provide means whereby presses of this character now in use may be provided with adjustment means in addition to the adjusting means now, or usually employed in such presses. a

A further object is to provide in a machine of this character cushioning means for yieldingl resisting the movement of the blank or worlz holder 1n one direction while the bed is maintained or locked in a fixed position,

o and improved means for releasing the bed,

whereby the cushioning agent will serve as {1)- nliedium for eflecting the adjustment of the A furthe object is to provide in a press of this charac er a combination of cushioning means for the work and raising means for the bed of the press and embodying a reservoir,

which reservoir and cushioning means constitute a part and parcel of the press, the cushioning means being operable independently of the means for locking the press bed. A further object is to provide improved means for locking and releasing the bed, and improved means whereby the locking means maybe rendered active and inactive by fluid pressure.

To the attainment of these ends and the accomplishment of other new and useful'objects as will appear, the invention consists in the features of novelty in substantially the construction, combination and arrangement of the several parts hereinafter more fully described and claimed and shown in the accompanying drawings illustrating this invention and in which Figure 1 is a view partly in elevation and partly in vertical section .of a portion of a press of this character, with parts omitted, and constructed in accordance with the principles of this invention.

Figure 2 is an enlarged detail sectional view of the locking mechanism, showing the parts in a position different from that shown in Figure 1, and as taken on line 2-2, Figure 3.

Figure 3 is an irregular sectional view taken I on' line 3-.3, Fi re 2.

Figure 4 is a detail sectional" view of,the controlling valve.

Figure 5 is an irregular sectional view taken on line 5-5, Figure 2.

Fi ure 6 is a face view of one of the locking mem rs.

Figure 7 is a face view of the co-operating locking member.

Referring more particularly to the drawings the numeral 10 designates the supporting structure of a press providedwith a re ciprocable ram 11, to which a die 12 isattached. The ram is reciproca'ble from a crank shaft 13 through the medium'of links 14, power being applied to the shaft froman suitable source through the medium of a u ley 15, a gear 16 and a gear 17, the latter eing connected with the crank shaft.

, All of the above referred to parts are of the ordinary and well known construction.

In the present form of the invention the numeral 18 designates the bed of the press u on which a die 19 is supportedand which d1e cooperates with the die 12 to operate upon the work 2 0.

The bed 18 is adjustable with respect to the supporting structureand also vertically, in a manner to be hereinafter set forth.

Connected with the bed 18 and depending therebelow are toothed members 21 having any desired numbenof teeth, and the mem- I bers 21 are provided with openings 22 there-. in, any number of which may be provided, 55 for a purpose to be set forth.

Mounted upon the supporting structure is a toothed member-23 which co-operates with the toothed member 21. I

One pair of these co-operating members 2123 is arranged on each side of the press and any number of pairs may be employed, and as the construction and operation is the same, the specific description of one will apply equally to them all.

' collars 26. The bolts 25 are of a length to permit the member 23 to be moved toward and away from the locking member 21 from the position shown in Figure 1, to the position shown inFigure 2.

Secured to a. suitable support preferably forming a part of the supporting structure 10, and in any suitable manner, is a cylinder 27 in which is arranged a piston 28. Connected with the piston is a piston rod 29, the extremity 30 of which projects beyond the active face of the teeth 31 of the member 23 andois adapted to enter one of the openings 22 to insure the proper positioning of the teeth 31 with respect to the teeth of the member 21. The extremity 30 of the piston rod-29 entering one of the openings 22 will guide the teeth 31 in the proper position with respect to the teeth of the member 21 and unless the extremity 30 does enter one of the openings 22 the teeth 31 will be held in a position that they will not contact with the ends of the teeth of the member 21.

The piston rod 29 is connected with the member .23 in any suitable'manner such as by means of a pin 32 passing therethrough so that as the piston 28 is reci rocated inv the cylinder 27, the member 23 Wlll be moved forwardly and backwardly.

Any suitable means may be provided for moving the piston 28, and to that end fluid pressure may be employed, the cylinder bemg provided with an opening 33 on one side of the piston 28 and to which opening a pipe 34 is connected, the pipe in turn being connected with a valve casing 35 in which a valve 36 is adapted to be rotated by means of a handle 37. Connected with the valve casing 35 is a pipe 38 which leads from a suitable source of fluid supply. Leading also from the valve casing is a pipe 39 which has communication with the cylinder 27 on the op osite side of the piston 28.

Leading also from the valve casing 35 is an exhaust pipe 40. Thus it will be seen that by moving the handle 37 to position the'valve as shown in Figure 4, fluid pressure will be supplied through the pipe 38, through the pipe 34, through the opening 33, into the cylinder 27 on one sideof the piston to move the piston to the ositionshown in Figure 1, to lock the bed 1'8 against movement. At the same time any fluid pressure on the opposite side'or' the piston 28 in the cylinder 27 will be exhausted through the pipe 39, through the valve casing 35, to be discharged through the exhaust 40.

Likewise, when the handle '37 is moved to adjust the valve 36 so as to form communication between the pipes 38 and 39 in the valve casing 35, the fluid pressure will be delivered to the other side'o'f the piston 28 and the other side will be open to the exhaust 40, so that the piston can be moved to the position shown in Figure 2, and thereby release or unlock the bed 18 of the press.

Formed within the press structure and constituting a part and parcel thereof, is atank or chamber 41, which may be of any desired size and configuration. Projecting through-the top 42 of the chamber are tubular members or guides 43, in which plungers or pistons 44 are reciprocable,'and any number of these guides and plungers may be provided.

Supported by the plungers is a pad 45 which is arranged beneath the bed plate 18 and passing through the bed plate 18 and engaging and resting upon the pad 45 are pins 46 which support a work holder 47 that cooperates with the die 12 to clamp the work 20. This work holder 47 preferably encompasses the die 19.

Fluid pressure is admitted into the chamber 41 from any suitable source of supply through'a pipe 48 in which is arranged a control valve 49, and which pipe 48 connects with the pipe 50, discharging in the chamber 41.

Leading fromthe pipe 50 is a branch 51 having a pressure regulating valve 52 therein and a shut off valve 53.

When the valve 53 is closed and the valve 49 open, fluid pressure will enter the chamber 41 and when the bed plate 18 is locked and in the postion shown in Figure 1, the pistons or plungers 48 by the action of the fluid pressure therein, will hold the pads 45 against the lower face of the bed plate 18 so as to support the work holder 47 flush with the top of the die 19.

When the ram 11 descends and the die 12 contacts with the work a further lowering movement of'the ram will shape the work 20 over the die 19, and the movement of the work holder 37 under the action of the ram 12 will be yieldingly resisted by the fluid pressure in the chamber 41. When the pressure in the chamber 41 overcomes the pressure at which the valve 52 is set, the fluid will escape through the pipe 50, pipe 51, into the pipe 48, back to the source of supply. The press will operate in this manner as long as the bed plate 18 is locked.

When it is desired, however, to raise thebed pl ate 18 to compensate different sized dies or the nature of the work being performed and to maintain the top working points of the dies at substantially the same level for the operator, the bed plate 18 is released in the manner as already described by operating the lever 37 of the valve 36 to withdraw the locking members 23 to the position shown in Figure 2. When thus released the fluid pressure in the chamber 41, and which acts as the resistance agent to the work holder 47 when the bed plate is locked, will operate to raise the bed plate 18 to the desired level, after which the lever 37 is operated again to cause assume the locking member 23 to move into locking engagement with the members 21 on the bed 18.

In order to lower the bed plate 18 the looking members 23 are shifted to release the bed plate, and a .valve 54 in the pipe 50 is opened so as to permit the fluid to escape from the chamber 41, resulting in the bed plate and the supported structure returning to a lower position under the influence of gravity.

With this improved construction it will be manifest that the bed has within itself a cushioning and adjustment combination, thereby imparting to the press an adjustment means in addition to the adjustment means usually incorporated in the press, and that the fluid reservoir and the cushioning means constitute a part and parcel of the press, and that means are provided which are controllable at will for locking the bed of the press against adjustment. Furthermore, while the cushioning means and bed adjusting means are combined one within the other, the cushioning means operates independently of the adjustment of the press bed.

In order to maintain the locking members 23 in looking engagement with the members 21, after the parts have beenmoved to the postion shown in Figure 1, the nuts or collars- 26 are screwed upon the bolts 25, as shown in Figure 1. Before the locking member 23 can be shifted to release the bed of the press the nuts or collars 20 must be screwed back upon the bolts 25 a suflicient distance to permit the member 23 to be moved backwardly so that the teeth 31 of the member 23 will clear the teeth of the member 21.

A safety valve 55 may be provided for the chamber 41 if desired.

lVhile the preferred form of the invention has been herein shown and described, it is to be understood that various changes may be made in the details of construction and in the combination and arrangement of the several parts, within the scope of the claims, without departing from the spirit of this invention.

What is claimed as new is 1. A press of the character described embodying a reciprocable ram, a bed with respect to which the ram is reciprocable, fluid pressure means constituting an integral part of the press. for bodily adjusting the said bed, and means other than the said adjusting means for locking said bed in its adjusted position.

2. A press of the character described embodying a reciprocable ram, a bed with respect to which the ram is reciprocable, means for bodily adjusting the said bed, and fluid pressure controlled means independent of the said adjusting means for locking said bed in its adjusted position, all of said parts constituting a part and parcel of the press.

3. A press of the character described embodying a work supporting bed, fluid pressure means for bodily adjusting said bed at will, said fluid pressure means being-incorporated in the bed as a part and parcel thereof, and means other than said fluid pressure means for locking said bed in its adjusted position.

a. A press of the character described embodying a work supporting bed, fluid pressure means for bodily adjusting the said bed, means for controlling said fluid pressure means at will and means other than the first two recited meansfor locking said bed in its adjusted position, the said fluid pressure means being incorporated in the press as a part and parcel thereof and disposed below the bed.

5. A press of the character described embodying a bed, fluid pressure means for bodily adjusting the bed, said fluid pressure means constituting a part and parcel of and incorporated within the press, mechanical locking means for maintaining the bed against adjustment, fluid pressure controlled means for rendering said locking means active and inactive, and means for controlling at will the last recited fluid pressure.

6. A press of the character described embodying a bodilyadjustable bed, means for locking said bed against adjustment,'work holding means mounted upon the bed, means for yieldingly resisting the movement of the work holding means in one direction with respect to the said bed, and means for causing aha last recited means to bodily adjust said 7. A press of the character described embodying a bodily adjustable bed, means for locking the bed against such adjustment, means for controlling at will the first said means, work holding means mounted upon said bed, and means for yieldingly resisting the movement of the work holding means in one direction with respect to said bed, the last recited means operating to bodily adjust said bed when the said locking means is rendered inactive.

8. A press of the character described embodying a bodily adjustable bed, fluid pressure controlled means for locking the bed against such adjustment. means for controlling at will the first said means, work holding means mounted upon said bed, and means for yieldingly resisting the movement of the work holding means in one direction with respectto said bed, the last recited means operating to bodily adjust said bed when the said locking means is rendered inactive.

9. A press of the character described embodying a bodilv adjustable bed means for locking the bed against such adjustment, means for controlling at will the first said means, work holding means mounted upon said bed, and fluid pressure means for yieldingly resisting the movement of the work sisting the movement of the work holding .taining the bed against means with res t to the bed in one direction, the said work older resisting means operating to bodily adjust said bed when said looking means is rendered inactive, and means for controlling at will the said locking means.

11. A press of the character described embodying a bodily movable bed, a work holder movable with respect to the said bed, means for yieldingly resisting movement of the work holder in one direction with respect to said bed, means for maintaining said bed against bodily movement, and means adapting said bed for bodily movement by the resisting agent of the work holder.

12. A press of the character described embodying a bodily movable bed, a work holder movable with respect to the said bed, means for 'eldingly resisting movement of the work hold r in one direction with respect to said bed, fluid pressure means for maintaining said bed against bodily movement, and means. adapting said bed for bodilymovement by the first recited means.

13. A press of the character described embodying a bodily movable bed, a work holder movable with respect to the bed, cushionin means for resisting the movement of the wor holder in one direction with respect to the bed, said cushionin means constituting a part and parcel of t e press, locking means other than the cushioningbmeans for mainodily movement, said bed being bodily movable by the resisting agent of the cushioning means and means for controllin at will the said locking means for adapting t o bed for bodily movement by said cushioning means.

14. A press of the character described embodying a bodily movable bed, a work holder movable with respect to the bed, cushioning means for resisting the movementin one direction with respect to the bed, said cushioning means constituting a part and parcel of the ress, mechanical means for maintaining the bed against bodily movement, and fluid pressure means for controlling said mechanical means for adapting the bed of the press for bodily movement by the cushioning agent, the said bed being bodily movable by the resisting agent.

15. A press of the character described embodying a bodily movable bed, cushioning means embodying a fluid reservoir as a part and parcel of the press, means for looking at will the said bed against bodily movement, and means for controlling said locking means, said bed being bodily adjustable by the fluid pressure in said reservoir when the locking means is inactive. v

16. A press of the character described embodying a bodily movable bed, means for locking at will the said bed against such movement, means for controlling said locking means, and fluid pressure means for bodily adjusting the bed when the locking means is inactive, said fluid pressure means embodying a reservoir constituting an integral part ofthe press.

17. A press of the character described embodyingan adjustable die supporting bed, a work holder movable with and with respect to the bed, cushioning means for the work holder, said cushioning means embodying a fluid containing reservoir forming a part and parcel of the press, and means for adjusting the said bed by the pressure of the fluid in said cushioning means at will to compensate varying sizes of-dies and for maintaining the working height of the dies at approximately the same level.

18. A press of the character described em- I bodying a bodily adjustable bed, cushioning means for the work, said cushioning means embodying a self-contained fluid reservoir and being a part and parcel of the press, the cushioning agent being operable to bodily adjust said bed, and means for locking the press bed while the work cushioning means remains active.

19. A press of the character described embodying a bodily adjustable bed and work cushionin means, a controlling agent adapted to bot adjust the bed and control the cushion, and means for locking the bed against bodily adjustment while the said cushion is maintained active.

20. A press of the character described embodying a bodily adjustable bed and work cushioning means, a fluid pressure agent common to both, and locking means for the said bed, the said cushioning means being operable independently of said locking means. I

21. A press of the character described embodying a bed, a ram reciprocable with a. set throw and providin with said bed a die space therebetween, an means for varying the size of said die space while maintaining f means associated with said bed, said fluid pressure blank holding means constituting a permanent part of the bed itself.

23. A press of the characterdescribed embodying a bed, a ram reciprocable with a set throw and providing with said bed a die space therebetween, said bed being bodily adjustable, fluid pressure blank holding means associated with the said bed, said fluid pressure blank holding means constituting a permanent part of the bed itself, said blank holding means also constituting the means for adjusting the die space between the bed and ram to Vary the said die space while the working height of the die is maintained substantially the same.

24. In a press of the character described, an adjustable die supporting bed, a ram reciprocable with a set throw and providing with said bed a die space therebetween, and

fluid pressure means acting as a blank holding means and an adjusting means for vary ing the said die space.

'25. In a press of the character described,

2 a die supporting bed, a ram reciprocabie with .a set throw and formin with said bed a die space therebetween, sai die space being variable, and said bed being adjustable and containing a fluid pressure blank holding means, said blank holding means being a permanent part ofthe bed itself.

In testimony whereof we have signed our names to this specification, on this 18th day of November, A. D. 1929.

RUDOLPH W. GLASNER.

FREDRICH J. RODE.

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