US1918784A

US1918784A - Sheet metal drawing press

Info

Publication number: US1918784A
Application number: US604417A
Authority: US
Inventors: Fredrich J Rode
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-04-11
Filing date: 1932-04-11
Publication date: 1933-07-18
Anticipated expiration: 1950-07-18

Description

July 18, 1933. F. J. RODE 1,918,784

\ SHEET METAL DRAWING PRESS Filed April 11, 1932 ll Sheets-Sheet .l

July 18, 1933. F. J. RODE SHEET METAL DRAWING PRESS 11 Sheets-Sheet 2 Filed April 11 July 18, 1933. F. J. RODE 1,918,784

SHEET METAL DRAWING PRESS' Filed ril 11 ll Sheets-Sheet 5 July 18, 1933. F. J. RODE SHEET METAL DRAWING PRESS Filed April' 11, 1932 11 Sheets-Sheet 4 July 18, 1933, F. .1. RODE 1,918,784

' SHEET- METAL DRAWING PRESS Filed .April 11, 1932 July 18, 1933. F. J. RODE 1,918,784

SHEET METAL DRAWING PRESS Filed April 11, 1932 ll Sheets-Sheet 6 July 18, 1933. F. J. RODE SHEET METAL DRAWING PRESS Filed .April 11,

Hlmm Hun July 18, 1933, F. J. RODE SHEET METAL DRAWING PRESS 'Filed April 11, 1952 11 Sh'ts-Sheefc -8' July 18, F. J. RODE SHEET METAL DRAWING PRESS Filed April eats-Sheet 9 'EIIIHII Fa/62267 7 7 660 402, am

July 18, 1933. J ROBE 1,918,784

SHEET METAL DRAWING PRESS Filed April 11, 1932 ll Sheets-Sheet 1O July 18, 1933. F. J. RODE 1,918,734

SHEET METAL DRAWING PRESS Filed .April 11, 1932 11 Sheets-Sheet 11 Illluh 69 1 lllllll lllhllu ||||HH| IHUIHI Hllllll HHHIl Puenaa July 18, 1933 1,918,784

UNITED STATES PATENT OFFICE raanmcn :r. Bonn, or cmcaeo, rumors SHEET METAL nnawmc rimss Application filed April 11, 1882. Serial No. 004,217.

This invention relates in general to metal ing of this character back shafts, by utilizworkingpresses, but, more specifically to drawing presses in which there is provided parallel crank shafts for operating a ram or slide, and one of the objects of the invention is to provide/an improved construction and arrangement of gear transmission for drivin the shafts through intermediate gearing. n the ordinary and direct meshing gears error will occur at the point of mesh, due to wear or from other causes, resulting in throwing the'crank shafts out of time or synchronism.

This can be obviated b increasing the di ameter of the direct mes ing gears, and the larger the diameter, the lesswill be the error in timing caused by such wear.

However, to employ gears of very large diameter in the ordinary direct meshing method, it would be necessary to space the parallel driven shafts for a considerable distance to compensate such large diameters. This is impractical as the depth and width of the press must be kept within prescribed limits.

It is another object of the present invention to render it possible to use gears-of very large diameter, and at the same time not only maintain the width and depth of the press within the prescribed limits, but also maintain the timing and synchronizing of the shafts. Furthermore, with this invention the peripheral, extent of the actual meshing of the gears will be increased, with the result that the extent of wear or mesh about the eripheries of the large gears ma vary or considerable distance without a ecting the relative ositions of the crank shafts, and such shafts will be always maintained in perfect alinement. 1

. A further object of the invention is to I vide in addition .to the gears of large diameter which are secured to the crank shafts, additional circumferential meshing of the gears by providing intermediate gears meshed to ether and which intermediate gears may of any'diameter regardless of tllieftspace between the axes of the crank s a s.'

A further object a to eliminate in a gearing the main shafts of the press as supports for the intermediate pinions or gears.

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 front elevation of a sheet metal drawing press having earing constructed and arranged accor 'ng to the principles of this invention applied thereto.

Figure 2 is a view taken on line 2-2, Figure 1, on an enlarged scale and with parts broken away. 1

Figure 3 is a sectional view taken on line 33, Figure 2.

Figure 4 is a view similar to Figure 2 of another form of gearing.

Figure 5 is a sectional view taken on line 55, Figure 4.

Figure 6 is a view similar to Figure 4 of another form of gearing. 1

Figure 7 is a sectional view taken on line 77, Figure 6.

Figure 8 is a view similar to Figure 6 of another form of gearing.

Figure 9 is an irregular, horizontal sectional view taken on line 99, Figure 8.

t Figure 10 is a view similar to Figure 8 of still another form of gearing.

Figure 11 is an irregular sectional view taken on line 11-11, Figure 10.

Referring more particularly to the drawings and to the form of the invention shown in Figures]. to 3, the numeral 15 designates generally the bed of a press, 16 the uprights,

17 a mm or slide movable in guides 18 carried'by the uprights, all of the ordinary and wellknown construction.

J ournaled in suitablebearings in the up rights and extending thereacross are spaced horizontal crank shafts 19-20. which are connected by means of links 2122 with the ramor slide 17.

' A. power shaft 23 is also journaled in suit may be provided thereof. These pinion gears each mesh with a gear 30, which have secured thereto and for rotation therewith gears 31, the gears 31. and 30 bein mounted loosely upon the crank shaft 19. he gears 30 each mesh with another gear 32, which latter is secured to a pinion gear 33 for rotation to ether and both the

gears

32 and 33 are loose y mounted upon a portion of the crank shaft 20. The

ars

30 and 32 are preferably of the same iameter.

Secured to'the crank shaft 19 for rotation therewith is a gear 34 which is of a ve large diameter and this gear 34 meshes wit the gear 33 which is carried with the gear 32, so that upon the rotationof the gears 32-33 they will be caused to rotate about the crank, shaft 20 and through the medium of the meshing of the gears 33 and 34 the crank shaft 19 will be rotated.

Asthe power shaft 23 is rotated, the gears and 31 will be rotated and as the gear 31 meshes with a gear 35, which latter is secured to the shaft 20 for rotation therewith, it will be manifest that the shaft 20 will rotated, the gears 34 and 35 will rotate in the directions indicated by the arrows in Figure 2, and as these gears 34 and 35 are of a very large diameter, they willoverlap, with the result that ver large diameter gears or rotating the crank shafts 19 and20 while at the same time the axes of rotation of the crank shafts will be maintained in roper spaced relation with out increasing t e depth of the press.

With the lar e diameter gears it will be manifest that t e points of mesh .of these gears with the intermediate pinions, and about the peripheries of the intermeshing gears will be increased-or extended so that any wear or error caused by the wear of the intermeshing teeth in the direct meshin rs of smaller diameters will be extende or a considerable distance about the riphcries of the larger gears all without a ecting the relative positions of the

crank shafts

19 and 20 and without the necessity of unduly spacing these shafts as would be necessary with the ordinary direct meshing gears. The crank shafts also serve as the supports about which the'intermediate gears rotate, thereby obviating the necessity of any additional or back shafts for the gears.

In. the form of the invention shown in Fi res'4 and 5' the ower shaft 36 is proviii? P d with a single pinion 37 secured there to and serves to drive the shafts from a point intermediate the ends of the shafts. The pinion 37 meshes with a gear 38 which is secured to a shalt 39 for rotation therewith, and this shaft 39 is journaled in suitable bearings in the uprights 16. Secured to the ends of the shaft 39 for rotation therewith are pinion gears 40 arranged adjacent each of the uprights 16. The gears40 mesh with gears 41 of large diameters and these gears 41 are secured to a crank shaft 42 journaled in the uprights 16.

The shaft 42 is connected by links 43 to the slide or ram 44. Secured to the other crank shaft 45 are gears 46 of large diameters located adjacent the ends of the shaft, and these gears 46 overlap the gears 41. Pinion gears 47 are secured to a shaft 48 for rotation therewith and the shaft 48 is journaled in suitable bearings in the uprights 16 and if desired in intermediate bearin s 49.

ecured to the shaft 48 for rotation therewith and so as to'mesh with the gear 38 is another gear 50, the gears 3850 being preferably of substantially the same diameter. With this form of gearing when the shaft 36 is rotated through the medium of a pulley 51 secured thereto, the gear 37 meshing with the gear 38 will rotate the shaft 39 and with 'it the crank shaft 42. The gear 38 meshing with the gear 50 will cause the shaft 48 to be rotated and with it the pinion gears 47.

These gears in turn meshing with the gears 46 will rotate the latter, thereby causing the crank shaft 45 to rotate and this crank shaft 45 is connected by means of links 51 with the slide or ram 44. It-will be manifest that the crank

shafts

39 and 48 will be rotated in unison andthat a reciprocatory movement will be imparted to the ram or slide 44. By the arrangement of the overlapping gears 46 and 41, it will be manifest that gears of extremely large diameter may be employed, thereby increasing the extent of the pei'i hcry of the gears 46-41, with the result t at there will be an extended portion of the per phery of the large gears in mesh with the pinion gears 40-47, so that any error which may occur by reason of the wear of the .intermeshing teeth will be extended over a, greater area or surface of the peripher of the large gears than would be the case w ere two large gears or gears of substantially the same diameter intermesh with each other.

In the form of the invention shown in Figures 6 and 7, there is another form of caring for accomplishing the same result an; in this instance the power shaft 52 is rotated from the pulley 53, the shaft being journaled in suitable bearings preferably in the uprights 16 and also in intermediate bearin 54.

Secured to the shaft 52 for rotat1on therewith and adjacent the ends thereof are pinion gears 55 for driving the crank shafts 56-57 were from both ends thereof, the crank shafts being connected by means of suitable links 58 with the ram or slide 59. The pinion gears 55- mesh with intermediate gears 60 that are.

. gears 63 of comparatively large diameters and .and secured to the shaft 79 for rotation the gears 6063 overlap each other. gears 60 mesh with gears 64 preferably of the same diameter as the gears 60 and these gears 64 are secured to a shaft 65 for rotation therewith. Carried by the shaft 65 are pinion gears 66 which are located adjacent the gears 64, and these gears 66 mesh with gears 67 ad jacent the ends of the crank shafts 57, the gearings 67 being of a comparatively large diameter and overlapping the gears 64 so that the circumferential extent of engagement of the gears 63-67 with the respective gears 62-66 will be increased beyond the extent of mesh of two gears of the same and of comparatively small diameters.

In the form of the invention shown in Figures 8 and 9, the power shaft 68 sis driven from the center by means of a pulley 69 and is journaled in suitable bearings in the uprights 16 and intermediate bearings 70. Secured to'the ends of the shaft 68 are pinion gears 71 which mesh with gears 72 secured to an intermediate shaft 73 for rotation therewith. Secured also to the shaft 73 for rota tion therewith are pinion gears 74 which mesh with gears 75 of large diameter and which gears 75 are secured to the crank shaft 76, the latterbeing connected by links 77 with the ram or slide 78.

The other crank shaft 79 is connected by means of links 80 with the slide or ram 78,

' through the medium of the gear 75 and also to the crank 79 through the medium of the.

intermeshing gears 7172-73748281. causing the crank shafts to rotate in timed relation and synchronism and in the directions indicated by the arrows in Figure 8'.

In the form of the invention shown in Figures 10 and 11, the crank shafts 8485 are driven from one end from the power shaft 86 on which latter is secureda pinion gear 87 for rotation therewith. This gear 87 meshes directly with a gear 88 of large diameter andis secured to the crank shaft 84 for rotation The therewith. The crankshafts 84 and 85 are connected by means of the links 89 with the ram or slide 90. Motion is imparted to the crank shaft 85 through the medium of an idle gear 91 rotatably mounted upon a stub shaft 92, and which gear 91 meshes directly with the gear 87. The gear 91 also meshes with a gear 93 of large diameter and which is secured to the crank shaft 85 for rotation therewith. The

gears

88 and 93 are of the same diameter and rotate in the directions indicated by the arrows in Figure 10.

In each of the forms of the invention it will be apparent that gears of large diameter are secured to the crank shafts and are out of mesh with each other, and that pinions are provided which are individual to and mesh with the gears on the convex shafts. Intermediate gears are secured to the pinion shafts and mesh with each other resulting -in the crank shafts being rotated in unison and at the same time providin an extended circumferential engagement 0 the teeth of the intermeshing gears. Motion is transmitted by means of driving power being applied to one of the intermediate gears through the medium of a driving pinion meshing with one of said intermediate gears.

With this invention it will be manifest that the two parallel crank shafts are rotated through the intermediate gearing and these gearings operate to keep the shafts in unison.

By the arrangement shown, the gears which are secured to the respective shafts to rotate them can be of a lar e diameter than possible if the gears whic are secured to the respective shafts directly mesh with each other.

With this construction all error in meshing of the gears at the point where they meet will be eliminated and the effect upon the centers of the crank shafts will also be eliminated, thereby rendering it possible to maintain the cranks in perfect alinement.

Furthermore, the intermediate gearing will besupported by the main shafts of the press, with the result that the back shafts of the press will be eliminated as a support for the intermediateand driving 'pinions.

Throughout the claims the term bull gear will be employed, to designate the gears of large diameter which are secured to the crank shafts. In some instances this term applies to the gears whose pitch line radius is of a length greater than the distance be,- tween the axes of the crank shafts arid a medial plane intermediate the axes of the crank shafts.

While the preferred forms ofthe invention have 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 arts, within the scope of the claims,

Ill

without departing from the spirit of-"this in-- vention.

What is claimed as new is 1. In a metal drawing press, a rec procable ram, spaced parallel crank shafts, links connecting the ram with the crank shafts, overlapping gears of large diameters connected with the respective shafts, a power shaft, and intermediate gears connecting the power shaft with the first recited gears for rotating the crank shafts, the said intermediate gearing being supported by and rotatable upon the said crank shafts.

2. In a metal drawing press a rec procable ram, spaced parallel crank shafts, llnks connecting the ram with said crank shafts, bull gears secured to each of the shafts, the pitch line radii of said bull gears be1ng greater than the distance between the axes of the shafts and a medial plane between thesaid axes, intermediate gears between each of the bull gears and the opposite crank shaft, said intermediate gears being rotatably mounted upon the crank shafts, a power shaft, and a gear connection between the power shaft and one of the aforesaid gears.

3. In a metal drawing press, spaced parallel crank shafts, a reciprocable ram, links connecting the ram with the crank shafts, a bull gear secured to each of the shafts for rotating them, pinion gears loosely mounted upon each of the crank shafts and meshing with the bull gear of the other shaft, gear connections between said pinions for rotating them, and a gear meshing with one of the gears of said connections for rotating them.

4. In a metal drawing press, spaced parallel crank shafts, a reciprocable ram, links connecting the ram with said crank shafts, and means for rotating the cranks from both ends thereof, the rotating means at each end of the shaft comprising a bull gear secured to each shaft, pinion gears loosely mounted upon each shaft and meshing with the bull gear of the other shaft, gear connections be tween the pinions for rotating the pinions, and a gear meshing with one of the gears of said connection for rotating them.

5 In a metal drawing press, spaced parallel crank shafts, a reciprocable ram, links connecting theram with said crank shafts, means for rotating the cranks from both ends thereof, the rotating means at each end of the shaft comprising a bull gear secured to each" shaft,

inion gears loosely mounted upon each shaft and meshing with the bull gear of the other shaft, gear connections between the pinions for rotating the pinions,

and'a gear meshing with one of the gears of saidconnection for rotating them, the gears of the said gear connection being mounted upon and rotatable about the respective crank shafts.

6. In a metal drawing press, spaced parallel crank shafts, a reciprocable ram, links connecting the ram with said crank shafts, a bull gear connected with each of said shafts, said bull gears being disposed adjacent but laterally spaced from each other, a

pinion loosely mounted upon each of the crank shafts and meshing with the bull gear of the other shaft, gear connection between the pinions, said gear connection being disposed in the space between the bull gears,

and means for imparting motion to said gear connection.

7. In a metal drawing press, spaced parallel crank shafts, a reciprocable ram, links connecting the ram with said crank shafts, a bull gear connected with each of said shafts, said bull gears being disposed adjacent but laterally spaced from each other, a pinion loosely mounted upon each of the crank shaftsand meshing with the bull gear of the other shaft, gear connection between the pinions, said gear connection being disposed in the space between the bull gears, and means for imparting motion to said gear connection, the pitch line radii of the bull gears being greater than the distance between the axes of the crank shafts and a medial plane between said axes.

8. In a metal drawing press, a reciprocable ram, spaced parallel crank shafts, links connecting the ram with said shafts, a driving gear secured to each of the crank shafts and out of mesh with each other, pinions individual to and meshing with each of the driving gears for driving them, intermediate gears connected respectively to the pinion shafts, said intermediate gears meshing with each other whereby the crank shafts will be rotated in unison, and means for driving one of said intermediate gears, certain of said intermediate gears being supported by the said crank shafts for free rotation with respect thereto.

FRIEDRICH J. RODE.

' DISCLAIMER 1,918,784.-Fredrich J. Rode, Chica 0, I11. SHEET METAL DRAWING PREss.

ent dated July 18, 1933.

Pat-

isclaimer filed Feb. 21, 1945, by the inventor;

the licensee, E. W. Bliss Company, approving and consenting. Hereby enters this disclaimerto claims 2, 5, and 7 of the specification.

[Qflic'ial Gazette March 2?, 1945;]