SU1680412A1 - Press tool for bending piece blanks - Google Patents

Abstract

The invention relates to the processing of metal pressure, in particular, to the design of the punch for bending. The purpose of the invention is to increase the durability of the stamp by increasing its durability between the backing. The stamp contains a matrix with a guide frame installed on it, having grooves for blanks, and with a node for restricting the movement of the guide frame into the stamp. The distance between the grooves of the guide frame is made equal to their width, and the node limiting its movement is made in the form of a vertically movable pin installed in the matrix and a stepped abutment wall of the guide manhole. When the stud is moved, the placement of the grooves with the blanks against the unworn edges of the tool changes. 1 h, para. f-ly, 4 ill.

Description

The invention relates to the processing of metals by pressure, in particular to the design of a punch for bending.

The aim of the invention is to increase the durability of a die by increasing its durability between rounding.

FIG. 1 shows a die for bending when it is not in use; in fig. 2 - stamp without top plate, plan view; in fig. 3 shows section A-A in FIG. 2 (the guide frame rests on the pin by step B); FIG. 4 is a section A-A in FIG. 2 (the guide frame rests on the pin with the step B).

The bending punch contains a movable upper plate 1 to which the punch 2 is fixed and a fixed plate 3 on which the die 4 is mounted. On the die 4 in the guide bars 5 there is a movable guide frame 6 with one or more slots 7 of width b for setting the blanks 8. The stamp also contains a unit for restricting movement of the guide frame 6, which includes a stop pin 9 fixed by a screw part in the matrix and a stop wall 10 of the hole 11 of the frame 6. The stop wall 10 is stepped and placed at a distance H 12 and 13. The length of the punch and die is made in the case of one groove 7 not less than 2b, and in the case of p-grooves n times larger.

The stamp works as follows.

The billet 8 is placed in the grooves 7 of the frame 6. Move the frame in the stamp. In this case, the pin 9 is screwed into its upper position and stops the frame, resting on the surface 12 of the wall 10. When the upper plate 1 is lowered, the punch 2 bends the workpieces 8 along the bending edges of the matrix 4. After the upper plate is raised, the guide frame is pushed out of the stamping zone, this product is shifted from the die by the walls of the slots 7 and removed. In this position, the studs 9 operate until they appear on the punch and the die matrix, which can affect the quality of the products. After that, the pin is moved, lowering its stop end. Now when you move the frame

C / 1

with

about

00

about

four

l

KZ

6, it will abut the pin 13 and the workpiece will be deformed on the unworn edges of the tool.

Claims (1)

Claim 1. Stamp for flexible piece blanks, containing a punch placed on a movable plate, and on a fixed plate - a matrix with a movable guide frame mounted on it with a groove for mounting the blanks and a guide frame displacing unit including a fixed screw part in the matrix a thrust pin and a thrust wall in the frame opening, characterized in that, in order to increase 0 five durability of the punch by increasing its durability between rounding, the retaining wall is made stepwise with a step height equal to the groove width, the pin is installed with the possibility of axial adjustment movement to interact with the corresponding wall step, and the working edges of the punch and die are longer than twice the width of the groove, 2, a stamp pop, 1, characterized in that the frame is made with additional grooves placed at a distance of the width of the main groove, and the length of the working edges of the punch and die is made increased in proportion to the number of grooves. H Fig 3 five  9  ten FIG. 2 Aa Fy