SU1465148A1 - Universal bending die ,particularly, for bevelling angle profile blanks by positive bevel - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular, to a tool for milling of angular shaped blanks into a positive one. The purpose of the invention is to increase the technological capabilities of the stamp due to the infinitely variable adjustment of the angle of the pellet, improvement of the quality and reduction of the reinforcement of the pellet. The stamp contains a matrix with a V-shaped working profile, as well as a mounted lanceon. The latter is made in the form of two semi-cylindrical segments (C) with cylindrical supporting and flat working surfaces. They are spring-loaded one to the other and interact with each other by two pairs of stop sections, one of which is located in the plane of symmetry of the stamp, and the other forms an angle equal to the difference between the angle of the profile of the matrix and the angle formed by the working surfaces C. When the piece is small, the workpiece is laid on C. Matrix When lowering, through the workpiece, it acts on the C of the punch, which bends the shelves of the tread profile, turning one towards the other. Adjustment of a given angle is carried out by adjusting the closed height of the stamp. 2 Il. a (Q (L

Description

one

The invention relates to the processing of metals by pressure, in particular, to a tool for (small pieces) of angular shaped blanks for a positive piece.

The aim of the invention is to expand the technological capabilities of the stamp by continuously adjusting the angle of the small piece, improving the quality and reducing the effort of the small piece.

FIG. 1 shows a universal stamp for moulting of angled profiles of blanks for a positive malka, general view; in fig. 2 - punch segment, section.

A universal stamp for Malkovkio corner profile blanks. The positive Malka contains a universal matrix 1 with a V-shaped profile, the apex angle of which corresponds to the largest angle of the malkovka, a movable punch consisting of two semi-cylindrical segment parts 2 installed with the possibility of turning around axes on the cylindrical bearing surfaces 3 in the housing 4. The flat working surfaces 5 of the elements 2 of the punch in the initial position form an angle of 90 and are held back by spring 6. Segments 2 and tanovleny with the possibility of "4

ABOUT

SP

four

00

It is possible to interact with each other by means of two pairs of 7 retaining sections 8 and 9 connected by a cylindrical surface, placed between the working 5 and supporting 3 surfaces of the height of the And segments 2. The stop sections 8 form an angle between themselves equal to the difference of the angle d of the matrix profile 1 and the angle formed by the working surfaces of 5 segments 2; the stop sections 9 are located in the plane of symmetry of the stamp.

The radius R of the cylindrical support surface of 3 segments 2 is equal to

S

R

cos (22 30 + 7) cos (112 ° 30 - 7) 44

where S is the minimum shelf thickness

profile;

/ is the maximum angle of a malkovka. The radius g of the cylindrical surface of the 7 mating resistant sections

8 and 9 is calculated by the formula:

(/

g

sin I

cos (22 ° 30 +) cos (112 ° 30 - t)

To allow segments 2 to rotate without reducing the quality of the grit, the gap between the edges of the working surfaces 5 facing the matrix 1 should be 4 S

The stamp works as follows.

The blank is placed in segments 2 of the punch. The die 1 descending at the working stroke acts on the workpiece, which transfers this force to the segments 2 of the punch. Under the action of this force, the segments 2 turn around their axes and bend the shelves of the workpiece to the desired angle. After the return of the matrix 1 to the initial position, the segments 2 return to the initial position by the spring 6.

In the process of punching, the angle between the working surfaces of both parts of the punch varies from 90 to the predetermined angle of the core at the end of the frame.

five

0

five

0

five

0

five

0

bochego move. Overlaying a given angle of the pellet is carried out on the press by adjusting the closed height and does not require replacing any parts of the working tool. In the process of deforming, the punch design ensures constant contact of the entire surface of the workpiece with the working surfaces of the punch elements, which causes the workpieces to bend in the immediate vicinity of the punch axis without transverse deflection over the section of the shelves. The latter eliminates the need for calibration at the final stage of the small piece and reduces the required effort of the small piece.

Claims (1)

Invention Formula A universal bending stamp, mainly for moulting of angular shaped blanks on a positive bevel, containing a punch installed in the body, made in the form of two turning elements with cylindrical supporting surfaces and flat workers as well as a matrix with in order to expand the technological capabilities of the stamp by continuously adjusting the angle of the molka, increase the quality and reduce the force of the molkovka, the turning elements are made in. form of spring-loaded one-to-one semi-cylindrical segments and installed with the ability to interact with one another by means of two pairs of flat stop sections interconnected by a cylindrical surface, placed between the working and supporting surfaces of the segments, and the stop sections adjacent to the working surfaces form an angle equal to each other the angle of the matrix and the angle formed by the working surfaces of the segments, and the thrust sections adjacent to the supporting surfaces of the segments are placed in planes STI stamp symmetry. surfaces, V-shaped working profile, o h ay u y and so. phi.2 Editor N. Gorvat Compiled by K. Semenks Tehred L. Oliynyk Corrector l. Pilipenko