US360098A - Bending-machine - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1. M. KENNEDY.

BENDING MAGHINE.

No. 360,098. Patented Mar. 29, 1887.

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BENDING MACHINE.

No. 360,098. Patented Mar. 29, 1887.

wm ea. JzwnW/ ZZ WAW MARTIN KENNEDY, OF HEGEIVISOH, ILLINOIS.

BENDlNG-MACl-HNE.

SPECIFICATION forming part of Letters Patent No. 360,098, dated March 29, 1887.

Application filed August 3, 1886.

T0 at whom it may concern:

Be it known that I, hIARTIN KENNEDY, of Hegewisch, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Bending-Machines, of which the following is a specification.

The object of my invention is the production of a machine which shall be capable of bending a great variety of shapes, such as are nearly or quite without the range of those machines using rigid formers or dies.

My invention consists in a novel combination of fixed with yielding dies and their associated parts, so constructed that a variety of dies may be used, of any desirable shape, and having various relations of movements to each other; and my invention consists, further, of various novel combinations, hereinafter described.

By providing wide tableroom between guiding-flanges for the movable dies, and by constructing the latter in the peculiar manner illustrated in the drawings and making them of considerable width, and the die proper detachable from its vibrating or reciprocating arms, a larger number of varying shapes may be produced by my improved machine than is possible by the bending-machines now in use.

In the drawings, Figure 1 is a plan View of the complete machine with bending-dies open. Fig. 2 is a similar View showing the bendingdies closed. Fig. 3 is a longitudinal section. Fig. 4 is a cross-section on a: as, Fig. 2, as seen from above. Figs. 5, 6, 7, 8, and 9 are various shapes which may be produced by the machine.

A, Fig. 1, is the bed or frame. Upon it are secured the table 0 and the upright frames B B, carrying the driving-gearing. On the upper face ot the frame slides the gibbed crosshead E E, the front half being bolted to the back half, E, the latter, together with the driving-gear and frame, being a well-known means for driving various special devices for cutting, punching, or forging, as well as for bending. The front portion, E, of the crosshead is slotted vertically for the reception of the sliding blocks J J, having pinsjj, on which are pivoted the arms H H. The blocks J J are adjusted by the screws G G. The points Serial No. 109,759. (No model.)

of the screws are grooved and extend into the blocks J J, and are held by pins crossing the ends of the screws and projecting into the grooves. The front portion of the cross-head is also slotted horizontally to allow the movement of the arms H H therein. The arms H H carry the dies D D, having an outline at d d, corresponding, when closed, to the exterior of the shape to be produced.

K is the stationary die, held in place by the pins 7: It.

Dies of other shapes may be readily substituted for the movable and fixed dies herein shown and described, as desired.

L L are guide-flanges bolted to the table 0,

and are adjustable by the set-screws N passing through the flange M.

Rolls 0 O diminish the friction between the arms H H and flanges L L.

Rolls Q Q perform the first bending of long bars, thereby preserving the dies; but these rolls are not essential.

I I are spiral springs, whose function is obvious.

P is a removable plug set loosely in a slot in the table O.

R represents the bar or blank to be bent.

T T are screws passing through raised portions U U of the bed-plate and abutting against the table 0.

The operation is as follows: The machine being in the position shown in Fig. 1, the heated bar or blank is placed between the plug 1? and die K, there being just space enough between them to easily allow such insertion. In some work the plug P may be omitted without detriment. On starting the machine the cross-head advances, and this motion, combiued with the closing of the dies D D by the action of the rolls on the guides L L, brings the bar to the shape of the dies, as shown in Fig. 2. The revolution of the gearing is continued until the machine resumes its original position in readiness for the next bar. All that is required for the practice of my invention in this regard is that the cross-head should be actuated by a reciprocating device. The

loose-fitting plug Iis especially of use in bending shapes like Fig. 5, the tendency of the bar being to assume the shape shown by the dotted outlines in said figure. As there must be sufficient space between the plug P and the stationary die K to allow the easy insertion of the bar, this tendency would not be entirely overcome by a tightly-fitting plug; but the thickness of the plug is so calculated that as the cross-head approaches the position shown in Fig. 2 it comes in contact with the plug, thereby forcing the bar R closely against the die K.

It is desirable, though not essential, that in operation the cross-head face should operate upon the plug 1?. The cross-head may, however, be cut away so as not to come in contact with the plug P, which in this case should fit snugly, instead of loosely, in the bed-plate C. It is also evident that in machines intended for producing but one shape the vibrating arms and the dies may be constructed as one.

It is evident that the table and the crosshead are in a manner interchangeable, in that either may be made movable, the other being stationary.

It is not essential that the extremities of the dies should travel in a straight line. For making some shapes it may be desirable to curve the face of the flanges L L; or a lever or system of 1evers-such as are well known substitutes for guide-bars in producing curved or rectilinear motion-may be pivoted to the table and to the dies as. substitutes for the guide-flanges L L.

I claim 1. In a bending or shaping machine, vibrating arms adj ustably connected with the crosshead and carrying the detachable dies D, in combination with guides which determine the motion of the moving dies, the dies D D being constructed and arranged substantially as shown and described.

2. In a bending or shaping machine, the combination of a cross-head with the loosely-fitting plug, the stationary die, and movable dies, substantially as shown and described.

3. In a bending or shaping machine, the combination of the vibrating arms carrying the moving dies, and the guides which determine the motion of the moving dies, the fixed die K, and the removable plug 1?, for holding and shaping the central portion of the blank, constructed and combined to operate substan tially as described.

4. In a bending or shaping machine, vibrating arms adj ustably pivoted to the reciprocating cross-head by the sliding block J, the pin j, and the screw G, in combination with adjustable guides which determine the motion of said dies.

5. In a bendingmachine, the combination of the crQsshead, the adjustable vibrating arms and dies H D, the plug P, the stationary die K, and the guides, .all constructed substantially as shown and described.

' MARTIN KENNEDY.

Witnesses:

P. H. T. MAsoN, J. I. VEEDER.

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