SU1183243A1 - Die of seccessive-combined action - Google Patents

Abstract

A STAMP OF A SERIAL-COMBINED ACTION, comprising a bottom plate on which a matrix is installed, and an upper plate on which a punch is mounted for cutting a part of the part contour, having two cutting edges parallel to the longitudinal axis of the matrix and located on opposite sides of the axis, and punches for final cutting, located on opposite sides of the longitudinal axis of the die and having each cutting edge parallel to this axis, and also containing two stop catchers located on opposite sides of the longitudinal axis of the mat testicles and having each working surface, one of which is located in a plane perpendicular to the longitudinal axis of the matrix and its plane, and the other in a plane passing through the cutting edge of the punch for cutting out part of the part contour and perpendicular to the plane of the matrix, characterized in that in order to improve the quality of workpieces by improving the accuracy of fixation, each stop is located on the bottom plate behind the punch for final cutting along the feed of the material being processed and with the possibility of contact with its one working surface, and the cutting edge of each punch for final cutting is located in the same plane with the corresponding cutting edge of the punch for cutting part of the part contour and is made I with a length shorter than the distance from the most distant part -plitter end of the cutting edge of the punch for cutting a part of the contour of the part to the surface of the catcher stop in contact with the punch for final cutting, on the number of working positions between the stop catcher We also use a punch to cut a part of the contour, for the length of another working surface of the stop catcher. 00 her to 4 00 figure 1

Description

The invention relates to the processing of metals by pressure, in particular to dies for processing sheet material.

The purpose of the invention is to improve the quality of the parts produced by stirring the catchers on the last position of the successively combined stamp, their action and fixing the strip on the surfaces obtained by the punch forming the contour of the part.

FIG. 1 shows the proposed stamp, section; in fig. 2 - puller with punches, bottom view; in fig. 3 - part of the stop catcher and punch for final cutting (enlarged image); in fig. 4 - cutting strip.

The stamp comprises an upper plate 1 on which a punch 2 for cutting out part of the part contour is located, punches 3 for punching, punches 4 for final cutting and a bending punch 5, and a matrix 6 on which a rigid puller 7 is installed, in which the catchers 8 are located. The stop has a working surface 9 and 10. The length of the rezhu part E of the punch 4

less than the feed pitch for the length m of the working surface 9 of the catcher 8.

The stamp works in the following way.

The strip 11 is fed to the first position where part of the part contour is cut down and surfaces 12 and 13 are formed for fixation. Subsequently, their positions are punched with holes by punches 3. At the last position is drying, fixing is carried out by surfaces using traps 8 on surfaces 12 and 13, and the parts are cut by punches 4 and flexible by punch 5. At the same time, fixing the strip from lateral displacement is performed all the time on surfaces 12 which are obtained by a single instrument and therefore have a high position accuracy. Fixing the strip at the last position, i.e., in the same place where the finished part is obtained, allows an increase in manufacturing accuracy.

At the very beginning of each band processing

until the positioners 8 start working, the fixation is carried out according to

preliminary stops (not shown).

The use of the invention improves the quality of manufactured parts by increasing the accuracy of fixation.

eight

Claims (1)

A STAMP OF SEQUENTIAL COMBINED ACTION, containing the lower plate on which the matrix is mounted, and the upper plate on which the punch for cutting part of the part contour is installed, having two cutting edges parallel to the longitudinal axis of the matrix and located on different sides from the axis, and punches for final cutting, located on different sides from the longitudinal axis of the matrix and having each cutting edge parallel to this axis, and also containing two stops-catchers, located on different sides from the longitudinal axis of the matrix and each working surface, one of which is located in a plane perpendicular to the longitudinal axis of the matrix and its plane, and the other in a plane passing through the cutting edge of the punch to cut out a part of the contour of the part and perpendicular to the plane of the matrix, characterized in that, in order to improve the quality of machined parts by increasing the accuracy of fixation, each stop-catcher is located on the bottom plate behind the punch for final cutting down along the feed of the processed material and with the possibility of contacting with it with one of its working surfaces, and the cutting edge of each punch for final cutting is located in the same plane as the corresponding cutting edge of the punch for cutting out a part of the part’s contour and is made with a length shorter than dividing the distance from the end of the punch cutting edge farthest from the stopper for cutting part of the contour of the part to the surface of the stop catcher in contact with the punch for final cutting, by the number of working positions between the stop catcher and the punch for cutting part of the circuit, the length of the working surface of the other abutment-catcher. SU, "1183243>