US2084066A - Metalworking press - Google Patents

Description

June 15, 1937. F. J. RODE ET AL I 2,084,066

METALWORKING PRES S Filed April 28, 1933 5 Sheets-Sheet l Jun 15,1937. F. .1. RODE ET AL 2,034,066

METALWORKING PRES 5 Filed April 28, 1933 5 Sheets-Sheet 2 June 15, 1937. F. J. RODE ET AL METALWORKING PRESS Filed' April 28, 1933 5 Sheets-Sheet 3 F. J. ona ET AL 2,084,066

METALWORKING PRESS Filed April 28, 1933 5 Sheets-Sheet 4 Q June 15, 1937. F. J. RODE ET AL METALWORKING PRES 5 Filed April 28. 1953 s Sheets-Sheet s Patented June 15, 1937 UNITED STATES PATENT OFFICE 8,084,086 METALWORKING PRESS Frcdrich J. Rode, Chicago, Ill., and Adam Ziska,

Ill., poration, nois by direct and to said Rode, Chicago,

a corporation of Illi- Application April 28, 1933, Serial No. 668,318

4 Claims.

' This invention relates to improvements in metal working presses, and one of the objects of the same is to provide a press of this character which will be of a steel welded construction, that is the 5 front and back walls of the press will be formed from plates, and these parts together with the end walls or uprights will be secured together by welding, with the result that the cost of manufacture and of assembling will be greatly reduced, and a compact arrangement will be produced.

Important economies can be effected as the different parts can be cut and welded to the proper size, eliminating the necessity of patterns and their well known inelasticity for changes. Another important advantage is the added strength obtainable, coupled with greatly reduced weight of material used in the making of the press. The elimination of many parts which formerly made up a press of this character, such as for instance the bed, cro uprights, tie rods, etc., results in great saving of labor and in the machining and assembly, and further assures greater accuracy in the finished machine.

I A further object is to provide improved means for reciprocating the ram whereby the crank shafts which are usually arranged parallel with the front and rear faces of the press will be dispensed with, and the ram will be actuated by 30 mechanism which is housed within the press and arranged so that all of the stress and strain of the ram as well as the actuating mechanism, will not only be borne by the front and rear plates of the press, but all of the stresses and strains 35 exerted by the work will be within the confines of the frame structure. The end walls or uprights serve only to resist any tendency of the front and rear walls becoming displaced with respect to each other under such strains.

A further object is to provide improved actuating mechanism for the ram, which embodies bull gears having eccentrics directly attached thereto, the axes of the eccentrics and of the gears being arranged transverse to the front and rear 45 walls of the press, the gears and eccentrics being supported entirely by the front and rear plates or walls, connections being made between the eccentrics and the ram at four points, preferably adjacent the corners of the ram, to main- 50 tain the ram against tilting movement, at any time during the operation of the press.

To the attainment of these ends and the accomplishment of other new and useful objects as will appear, the invention consists in the features 55 of novelty in substantially the construction, comenlarged scale, taken on bination 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 front elevation, partly in section and partly broken away, and with parts omitted, 01' a press of this character constructed in accordance with the principles of this invention.

Figure 2 is an irregular vertical sectional view taken on line 2-2, Figure 1.

Figure 3 is a top plan view, on an enlarged scale, of Figure 1, and with parts omitted.

Figure 4 is a horizontal sectional view, on an line 4-4, Figure 1, and

with parts omitted.

Figure 5 is a vertical sectional view, on an enlarged scale, taken on line 55, Figure 3.

Figure 6 is a horizontal sectional view, on an enlarged scale, taken on line 6-6, Figure '1, and

with parts omitted.

Referring more particularly to the drawings, the numerals l and II designate respectively the front and rear members of the press, and.

these members are formed of steel plates of the desired configuration, provided with the necessary openings which serve as bearings for the parts to be hereinafter described, and to facilitate access to the work and to other parts of the mechanism, such openings being arranged wherever desired or necessary.

The end walls I! are also formed preferably of steel plates and the front, rear and end walls are secured together by brazing or welding so as to form an entire steel welded structure, the end walls being of suitable length to provide the necessary space between the front and rear walls or plates and in which spacethe ram actuating mechanism is arranged.

A portion of the front plate may be provided with supports l3 arranged in a position to support a bed or bolster plate It also secured in position by being welded, brazed, or otherwise permanently fastened to the supports l3.

In presses of this character the bed or bolster plate I 4 supports a usual die l having a work holding ring or member 18 co-operating therewith, the latter being supported by the usual pins I! which pass loosely through the bed or bolster plate l4, and rest upon a pad [8 usually supported by means of a cushioning device |9.arranged below the bed or bolster plate.

The numeral 20 designates areciprocable ram movable upon guides 2| supported by the portions 22 of the front and rear plates and which pct- 44 and 45 respectively mesh with gears 2 tions constitute the uprights of the press, and the ram 26 may be counterbalanced by means of counterbalancing devices 23, any number of which may be provided and preferably of the pneumatic 5 cylinder type, the devices embodying piston rods 24 connected to pistons within the cylinders 23 (not shown) and also connected by means of armsor brackets 26 with the ram 26.

The operating mechanism for the ram which will effect a reciprocation of the ram, is arranged within the space between the front and rear walls or plates, and embodies bull gears 26 mounted upon shafts 21, which latter have bearings in the front and rear walls or plates l6 and ll of the press, and the shafts 21 are so arranged that the axes thereof and of the gears 26 are arranged transverse to the front and rear walls or plates l6 and ii and parallel with the end walls or uprights I2. The gears 26 are preferably arranged in alinement with each other and out of mesh, and secured to each of the gears 26 to rotate therewith and on each side of the respective gears are eccentrics 26, the gears and the respective eccentrics being preferably of an integral forma-. tion.

Eccentric straps 29 encompass the respective eccentrics 28 and connected to each of the eccentric straps 23 are links 30 which in turn are connected to the ram 26.

Four of the eccentrics and the eccentric connections with the ram 26 are preferably provided and the connections with the ram are preferably made at the corners thereof to form what might be termed a "four point suspension for the ram, and these connections operate not only to reciprocate theram but to maintain the ram against a tilting movement at any time during the cycle of operation of the press or reciprocation of the ram.

By reason of the fact that the axes of the gears 26 and eccentrics 28 are transverse to the front and rear walls or plates of the press, and as the eccentrics are connected directly with the respective gears 26, it will be manifest that a very compact arrangement may be provided and the usual crank shafts for reciprocating the ram and which extend in directions parallel with the front and rear faces of the press, will be dispensed with.

Motion is imparted to the gears 26 preferably by means of a motor 3 I, preferably mounted upon a bracket 32. Connected with the shaft of the motor is a pulley 33, over which a belt 34 passes, and this belt also passes over a pulley 35 connected to a shaft 36, which latter is journaled in the front and rear walls or plates l6 and II of the press, the axis thereof being parallel with the axes of the gears 26.

Connected with the shaft 36 to rotate therewith are gears 31, preferably two in numbenwhich in turn mesh with gears 36 secured to a shaft 39 for rotation therewith, and this shaft 39 is iournaled in suitable bearings 40 in the front and rear walls or plates Ill and H of the press and are housed therebetween.

One of the gears 36 meshes with another gear 4| also housed within the press and this gear 4| is connected to a shaft 42 for rotation therewith, and the shaft 42 is journaled in suitable bearings 43 in the front and rear walls or plates in and II. The shafts 39 and 42 project through and beyond the front wall or plate It! a sufficient distance to have respectively secured thereto and for rotation therewith gears 44-45. The gears 46-41 with respect to each other and for arranged preferably on the outside of the plate or wall l6 and secured respectively to shafts 46-46 for rotation therewith. These shafts 48-49 are ioumaled respectively in suitable bearings Bil-6i inthc front and rear walls or plates l0 and H.

Secured respectively to the shafts 66-5l and for rotation therewith are gears 62-63 which in turn mesh respectively with gears 26, and to which latter the respective eccentrics are secured for rotation 56 that by the operation of the motor the main driving shaft 36 will be rotated and motion will be imparted from this shaft through the medium ofthe gear 31 to the gear 36. The gear 36 meshing with the gear 4| will rotate the latter and also meshing with the gear 52 will rotate it, while the gear 4| meshing with the gear 63 will rotate the latter.

The rotation of the gears 52 and 53 and meshing respectively with the gears 26 will rotate them and this in turn will rotate the respective eccentrics 26 to cause a reciprocatory movement to be imparted to the ram 23, and upon which ram 20 the usual die 54 that co-operates with the die I6, is mounted.

With this improved construction it will be manifest that a very compact arrangement of press will be provided and that the cost of manufacture and of assembling the press will be greatly reduced. At the same time the usual long crank shafts which extend parallel with the front and rear faces of the press will be obviated, and,

in the present construction none of the welds will take any direct strain of the working parts, but all of the stress and strain of the operation upon the work will be. borne entirely by the front and rear plates or walls of the press and all obiectionable torque will be overcome. The end walls l2 serve only as a means for maintaining the front and rear walls against displacement the purpose of maintaining a rigid structure.

Obviously the end walls may be of any de-- sired thickness and suitable portions of the end walls may be hollow for the sake of lightness.

It will also be obvious that webs or braces 56 may be provided between the front and rear walls or plates, if desired or necessary, and suitably arranged, and the front and rear walls may, ifdesired, be fastened together by suitable tie rods or bolts66.

It is also obvious that the structure may be reinforced or braced wherever necessary or desired, and the press may be supported upon any suitable form or-type of base. The press is preferably supported by means of braces 51 which may engage and rest upon a suitable support 56, such as the floor of a building, and an opening or pit 69 may be provided, if necessary, so as to receive the lower extremity of the press and the cushioning device l9, if the latter is employed.

While 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:- v

1. A supporting frame for power presses or the like, formed by front and rear upright plates, spaced upright columns formed integral with and depending from each of the plates, said columns on each platev being in alinement but spaced from each other, end walls arranged adjacent the longitudinal edges of the uprights and at the ends of the plates above the uprights, the edges of the plates being welded together, and integral bed supporting portions carried by and disposed between the uprights, the said uprights at the ends of the bed being uninterrupted, the upper portions of the plates constituting a ,hollow crown, there being alined shaft bearing openings in the front and rear plates of the crown portion. of the press, within the confines of and spaced from the edges of said plates, and within the confines of the said upright columns.

2. A supporting frame for power presses or the like, formed by solid and comparatively thin front and rear upright plates, spaced upright columns integral with and depending from each of the plates, end Walls arranged adjacent the longitudinal edges of the uprights and at the ends of the plates above the uprights, the edges of the plates being welded together, and bed supporting portions integral with and disposed between the uprights, the said plates constituting a hollow crown, in combinationwith shafts having bearings directly in the plates within the confines of and-spaced from the edges of the front and rear plates and extending across the faces therebetween, said shafts being also disposed within the confines of said upright columns, whereby all vertical stresses of said shafts will be sustained by and exerted in directions edgewise of said plates, and driving gears of substantial diameter carried by the shafts and disposed within the hollow crown, rectly above the press slide.

3. A power press embodying a bed, spaced uprights, a crown, a slide reciprocably mounted between said uprights and said bed and crown, said crown embodying front and rear plates comparatively thin with relation to their other dimensions, means for connecting said plates together, a shaft mounted in said plates and extending from front to rear of the press, said shaft being located within the confines of said uprights and also spaced from the edges of the plates, whereby the vertical stresses exerted by said shaft are absorbed by said plates in a direction edgewise of said plates, and eccentric means between said shaft and slide.

4. A power press embodying a bed, spaced uprights, a crown, a slide reciprocably mounted between said uprights and said bed and crown, said crown embodying front and rear plates comparatively thin with relation to their other dimenand located disions, means for connecting said plates together,

two shafts mounted in said plates and extending from the front to the rear of the press, both of said shafts being located within the confines of said uprights and also spaced from the edges of the plates, whereby the vertical stresses exerted by said shafts are absorbed by said plates in a direction means individual to shafts and said slide.

and between each of said FREDRICH J. RODE. ADAM ZISKA.

edgewise of said plates, and eccentric

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