RU1827308C - Flanging die - Google Patents

Abstract

Usage: relates to the processing of metals by pressure, is used to flange the inner contour of the hole, allows to increase the height and thickness of the bead by thinning the periphery of the hole. SUMMARY OF THE INVENTION In the die, the inner sleeve is mounted on the punch and extrudes material from the annular section around the hole in the board . The outer sleeve and the wedge cogs associated with the inner sleeve coordinate the time and travel path of the working bodies. The supporting section of the inner sleeve is made wedge-shaped, and the creepers have an additional wedge surface and adjusting screws. 5 il

Description

The invention relates to the processing of metals by pressure, and more particularly, to the flanging of holes for threads. A flanging stamp is known. The design of the stamp is imperfect, individual work areas experience heavy loads, and the stamping process is dynamically unbalanced. The stamp does not make it possible to obtain a high-quality flanging according to the thickness and height of the bead.

The purpose of the invention is to expand the technological capabilities of the stamp by obtaining high-quality flanging of various thicknesses and heights.

In FIG. 1 shows a General view of the stamp; in FIG. 2 - stamp in the plan; in FIG. 3 is a diagram of an arrangement of a punch and bushings at the time of extrusion of material from the periphery of the hole into the board; in FIG. 4 is a diagram showing the arrangement of the punch and bushings at the time of flanging; in FIG. 5 - a fragment of the kinematic diagram of the stamp.

The stamp contains a base 1 (FIG. 1), in the center of which a punch 2. is mounted. A spring 3. is mounted on it. Lying on the base and through the washer, it supports the inner sleeve 4, on which the outer sleeve 5 is supported, supporting the spring 6 and together with the sleeve 4 forming an axially movable clamp, the wedge-shaped creepers 7 are located symmetrically on the base on both sides of the punches and are equipped with adjusting screws. 8 The wedge-shaped creepers and bushings have wedge sections 9 made at the same angle to the vertical, the top of the bushing is crowned t the adjusting nut 10, the matrix 11 is mounted on the slider of the press.

The stamp works as follows. the preform with a pre-punched hole is laid on the die with the hole on the catcher, when the die 11 moves downward (Fig. 1), pre-flanging with a punch 2 begins, at the end of which the inner sleeve 4 comes into operation and extrusion of metal from the periphery to the side begins (Fig. 3). The sleeve 4 is mounted above the outer sleeve 5 and the starter of the robot with the help of a nut 10 to the height of the dampened silent muteral h. When extruding .t-r-al sleeve 4

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remains in place, as it rests on the wedge portions 9 of the wedge creepers 7, which in turn are supported from the sleeve 5, and that on the housing 1. After the matrix 11 begins to press through the material 10 on the nut 10, the outer sleeve 5 and the sleeve 4 simultaneously begin to move down, and the creepers 7 radially from the center (Fig. 5).

The punch 2 carries out the final flanging and calibration (Fig. 4). When the matrix is returned to its initial position, the springs 3 and 6 return bushings 5 and 4, the sprockets 7. Screws 8 are used to adjust the height of the sleeve 4 relative to the punch 2, the height difference serves to select the optimal conditions for the flow of metal during extrusion from the periphery.

Thus, the stamp can be flanged, increased in height and thickness and better, can be installed on simple presses, i.e. to have a large scope of application, finally, the stamp is adjustable within certain limits, which extends the technological

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features not limited in the size of parts.

Claims (1)

SUMMARY OF THE INVENTION A flare stamp, comprising a matrix, a fixed base with a punch fixed therein, a punch clamp in the form of a telescopically connected outer sleeve with a wedge section on the non-working part and an internal sleeve with a support section, an internal clamp sleeve fixing unit made in the form of a radial movable wedge creepers installed at the base and interacting with the wedge sections of the outer sleeve and the supporting sections of the inner sleeve, while the outer sleeve is made one of the upper and lower parts connected to each other by means of a threaded pair, which is distinguished by the fact that, in order to expand the technological capabilities of the stamp by obtaining flanges of various thickness and height, the supporting section of the inner sleeve is made wedge-shaped, and the crawlers are equipped with additional wedge surface and adjusting screws.  / //