SU1532205A1 - Arrangement for trimming sylphons - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used in mechanical engineering for trimming the edges of thin-walled bellows. The purpose of the invention is to improve the quality of products and expand technological capabilities by ensuring the processing of bellows with different lengths and wall thicknesses with the same diameters and distances between the corrugations. When moving the cutting head, the force of the bellows is pressed by the latch 10 increases due to the compression of the elastic member 11. With further radial movement of the spindle 6 relative to the axis of the mandrel 1, the elastic member 11 is compressed by the latch 10 and the knife 8 cuts through the wall of the bellows 17. Due to the forces of friction arising between the mandrel 1, the bellows 17 and the latch 10, the yoke 7 is rotated. The latch 10 rolls over the bellows 17 and moves in the annular groove between the yoke 7 and the coupling 9 in the radial direction by the amount of compression of the element 11, performs a flat-circular movement relative to the knife 8, excluding the displacement of the cutting edges of the mandrel and the disk knife. 2 Il.

Description

The invention relates to the processing of metals by pressure and can be used in mechanical engineering for trimming the edges of thin-walled bellows.

The purpose of the invention is to improve the quality of the products and expand the technological capabilities of the device by ensuring the processing of bellows with different lengths and wall thicknesses with the same diameters and distances between the corrugations.

FIG. 1 shows a device for trimming bellows, general view; initial sense; in fig. 2 - regime (s at the time of cutting).

The device comprises a mandrel 1. with a shoulder 2 and cutting with an edge 3, and a cutting head including a body 4 in which a sleeve is mounted in the bearing units. In the axial hole of the sleeve 5 there is a spindle 6 of the holder 7 on which a circular knife 8 is closed with an inner one-side cutting by edge. The spindle 6 is mounted with the possibility of axial movement relative to the sleeve. On the end part of the yoke 7, a coupling 9 is fixed, in the annular groove of which a roller retainer 10 is mounted, made of caprolactan and an elastic-elastic ring element 11 covering the retainer 10, which podruzhinivaya it in the middle position. The yoke 7 is provided with an axial stop 12,

located along the axis of rotation, the end surface of which is located in the same plane A with the cutting edge of the disk knife 8 and is processed simultaneously with the lateral surface of the disk knife in assembled form. A spindle 13 is pressed on the spindle 6 between the yoke 7 and the bushing 5, pressed by the nut 14. The mandrel 1 is fixed in the spindle 15 of the machine, and the head is fixed on the caliper (caliper is not shown). In addition, the processed bellows 17 elastic elastic gland roller 16. The device operates as follows.

In the initial position of the cut-off, the head is retracted from the mandrel 1 at a distance of 1, sufficient to install the bellows 17 on the mandrel 1 or to remove the bellows from the mandrel. After installation, the bellows 17 is pressed against the side of the mandrel 1 by means of a roller 16. The cutting head is moved to the side of the mandrel 1 by the machine caliper until the end surface of the axial stop 12 interacts with the end surface of the mandrel 1, while the spring 13 is partially compressed, which presses the end face the surface of the axial stop 12 to the mandrel 1 with a certain force. By turning on the drive of the spindle 15, the mandrel 1 is rotated, and the cutter moves with the help of a caliper in the transverse direction (Fig. 2, arrow B), while the latch 10 enters the annular groove of the bellows 17 in the ring groove, and the cylindrical surface of the latch 10 presses the bellows sleeve 17 to shoulder 2. This is the basis of the bellows 17 relative to the mandrel 1 in the axial direction. In the process of further movement of the cutting head, the force of the bellows 17 is clamped by the fixer 10 increases due to the compression of the elastic-elastic element 11. At further | Nashen radial movement of the spindle 6 relative to the axis of the mandrel 1 elastic-compressive element 11

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(| iksatorm 10 and the knife 8 cuts through the wall of the snone 17. Due to the frictional forces between the mandrel 1 and the bellows 17 and the latch 10, rotation 7 is connected to the yoke. The latch 10 runs around the bellows 17 and simultaneously moves in the annular groove between the yoke 7 and the coupling 9 in the radial direction by the amount of compression of the element 11 and performs flat-circular movements relative to the knife 8 rigidly fixed to the holder 7.

After cutting the edges, the cutting head is initially retracted in the transverse direction to its original position, then moved axially for a length of 1 and the bellows 17 is removed from the mandrel 1, and the cut part is removed from the sleeve 7.

Claims (1)

Invention Formula A device for trimming bellows, comprising a mandrel with a cutting edge, a disk knife and a retainer, characterized in that, in order to improve the quality of products and expand technological capabilities by providing the ability to process bellows with different lengths and wall thicknesses with the same diameters and distances corrugations, it is provided with a housing, a sleeve mounted in the housing so that it can be rotated, a spindle with a clip mounted in the sleeve, a coupling that is fixed to the end surface of the yoke, elastic-elastic an end element enclosing the retainer on its outer surface and installed in the coupling, and an axial stop fixed in the cage with the possibility of its end surface interacting with the end surface of the mandrel, while the circular knife is fixed in the cage with the possibility of contacting its end surface with the retainer, and end surface of oseg. The main stop is located in the same plane with the cutting plane of the disk knife.