US1944651A - Universal machine for canting and circular-bending - Google Patents

Description

A. WACHT ER 1,944,651

UNIVERSAL MACHINE FOR CANTING AND. CIRCULAR BENDING Jan. 23, 1934.

Filed July 25, 1932 Patented Jan. 23, 1934 UNITED STATES 1,944,651 PATENT OFFICE UNIVERSAL MACHINE FOB CANTING AND CIRCULAR-BENDING August Wachter, Weingarten, Germany, assignor to the firm Maschinenfabrik Weingarten vorm. Hch. Schatz A. G., Weingarten, Germany Application July 25, 1932, Serial No. 824,626, and

,in Germany 2 Claims.

all necessary kinds of cantings and circular bend-- ings. If, for instance, low steps with long shanks are to be bent, which frequently occurs inthe construction of door-frames, one is obliged by the hitherto existing machines for canting and circular bending to affix on the bending cheek which is considerably distant from the center of the bend to be produced especially long and thin bend ing rails which are only applicable for a shank of short length and are not suitable for the production of sharp-edged bends on account of the resiliency of the high thin bending rails.

By the present invention is accomplished, that all necessary kinds. of bends, especially low steps with long shanks, can be bent by a single bending machine. This is brought about in such a way, that the bending cheek is not only, as it is hitherto known, adjustably arranged in the vertical direction, but also transversely to its. level in a horizontal direction, so that it can be exactly adjusted by its horizontal adjustment transversely to its level on the corresponding bending lever arm to the strength and step of the sheet to be bent.

The preferred form ofembodiment of the invention is illustrated in the accompanying drawing, of which Fig. 1 is a partial front view of the bending cheek with its guide and adjustment device.

Fig. 2 is a horizontal section of the right part of Fig. 1 through the bending cheek, bending cheek arms, guide pieces and nuts.

Fig. 3 is a side view partially in section through 40 the right bearing side of the bending cheek according to the invention.

Fig. 4 is a vertical section through the upper cheek, lower cheek and bending cheek.

According to the drawing, the bending cheek a in which the bending rail b is fitted is adjustably guided in guide-pieces 0 within the bending cheek arms d. The adjustment of the bending cheek in a vertical direction is carried out by screwspindles and nuts in a customary way.

According to the invention the bending check a is adjustable in a horizontal direction transversely to its level in such a manner, that two screw-collars e are screwed on the left and right bearing-side of the bending cheek, provided with respective threads and are rotatable on the spindle-nuts 2', provided with pivots. By means of the nuts g screwed on the ends of the pivots the screw-collars e are pressed against the bending 6 cheek arms d in order to produce a rigid con- August 6, 1931 nection between the bending cheek a and the arms (1.

For the purpose of adjusting the bending cheek in a horizontal direction the tension-nuts g and. locking-nuts j'must first be loosened and after adjustment which is brought about by turning the screw-collars e, they are again tightened.

The rails or slides c in the bending cheek arms d serve for the precise guiding of the bending cheek shaped grooves h (Fig. 1) a in which corresponding T-shaped shoulders or lugs of the guiding piece 0 are fit, so-that by this means a rigid connection between the bending check a and the pieces 0 or by the latter with the bending cheek arms 11 in a longitudinal direction of the bending cheek is obtained. 1 y

In Fig. 3 of the drawing, the limits of the horizontal adjustment of the bending cheek are indicated at ,/Z. being adjusted, as at l, for its shortest throw in a bending operation, and in dotted lines, as at s, for its longest throw. In Fig. 4 the operation of the bending check is indicated with the cheek adjusted for its shortest throw, the movement of the cheek in upsetting the metal is indicated by broken lines.

. Having described my invention, I claim: I 1. A bendingdevice comprising, opposite supporting arms having longitudinal grooves in their inner faces, a bending cheek mounted between the arms with its ends movable in the grooves,

pivot blocks adjustable longitudinally of the supporting arms, and exteriorly screw-threaded col- In full lines the cheek is shown asv lars rotatable on the pivot blocks and engaging v the cheek to adjust said check transversely of the grooves in the supporting arms.

2. A bending device comprising opposite supporting arms having longitudinal grooves in their inner faces, slides movable along said grooves, a

bending cheek mounted between the supporting arms with its ends provided with transverse grooves, lugs projecting from the inner faces of the slidesand engaging the grooves in the ends of the cheek to guide the cheek transversely of the slides, pivot blocks adjustable longitudinally of the supporting arms, and exteriorly screwthreaded collars rotatable on the pivot blocks and engaging the cheek to adjust said check transversely of the slides. j v

' AUG. WACHTER.

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