SU483174A1 - Die Cutting Stamp - Google Patents

Description

one

The invention relates to sheet punching and can be used to cut parts from strip or strip blanks.

Cutting dies are known that contain a matrix on which a stop is located, which is located on the longitudinal axis of the stamp, and a puller, having two matrices parallel to the mirror, and working planes at different distances from it, which are interconnected by an inclined surface.

Known stamps cannot be used for cutting parts that have a small size along the longitudinal axis of the stamp, since the size of the inclined surface may be insufficient to provide the necessary amount of waste bending to move the workpiece above the stop.

The purpose of the invention is the expansion of the technological capabilities of the proposed punching die.

This is achieved by the fact that an additional inclined surface is made on the puller of the proposed stamp, connecting the working planes and located parallel to the feed axis of the workpiece to the side of the plane, perpendicular to the mirror of the die and passing through the longitudinal stamp of the workpiece of the die, axes

stamp, but on the other hand from the same plane.

FIG. 1 shows a stamp, a longitudinal section; in fig. 2 is a section along A-A in FIG. one.

The stamp contains the matrix 1 with the support 2 and the puller 3 mounted on its mirror, as well as the punch 4.

The surface of the puller above the stop to the working hole has a trapezoidal groove. During punching after punching a regular part, a jumper is formed in the strip, which deforms during the reverse movement of the punch due to the presence of a groove on the puller, takes the form of a groove, and freely moves over the abutment when the strip moves.

For reliable operation of the stamp, it is recommended to proceed from the following conditions:

H hy-t-b and

where H is the gap between the puller and the matrix

inlet strip, HI - gap between upper surface

grooves puller and die. Well - the height of the stop, b - the thickness of the material being forged.

It should also be the width of the upper part of the groove to take no less than the diameter of the stop.

Subject and 3 about And And

A punch die containing a matrix on which the stop, located on the longitudinal axis of the punch, and the puller, having two matrices parallel to the mirror and working planes located at different distances, interconnected by an inclined surface, distinguish w, and that, in order to expand the technological capabilities of the punch, an additional inclined surface is made on the puller, which is connected, and the working planes are parallel to the feed axis of the workpiece on the side of the plane perpendicular to the mirror the matrix and nrohod br; s through the longitudinal axis of the die blank feeding, and earlier as the inclined surface is arranged parallel to the longitudinal axis of the die, but on the other side of the same plane.