SU1194536A1 - Apparatus for rotary drawing of conical parts - Google Patents

Abstract

DEVICE FOR ROTARY EXTENSION OF CONIC PARTS, containing coaxially mounted mandrel and housing with support cones, between which pressure elements are placed, axial pressure clamp, copier, and axial adjustment mechanism parts, the mechanism for adjusting the axial position of the support cones is complete in the form of at least three equally spaced lever systems, each of which consists of three levers articulated by their ends, the middle of which is equipped with rollers in contact with the copier, and articulated with another end (About the ends of the two levers rigidly connected with one supporting cone, and the other - with the body.

Description

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O) The invention relates to the processing of metals by pressure, namely to devices for the rotational drawing of conical parts. The purpose of the invention is to improve the quality by reducing the thickness of the parts. FIG. 1 shows schematically the device, a general view; in fig. 2 device when performing a copier in the form of a cone, a fragment, a general view; in fig. 3 - copier execution device, variants. The device comprises a coaxially mounted mandrel 1 and a housing 2 in the form of a cup, on which a micrometric nut 3 is screwed, housed in the housing 2 and spring-loaded 4 springs support cones 5 and 6, between which, using separators 7, pressure elements 8 are mounted, coaxially mounted 1 a clamp 9 with a rotating bolster 10, a drive 11 reciprocating movement of the clamp 9, rigidly fixed on the clamp 9 by means of a lock nut 12 a copier 13 with a conical surface and an axial position adjustment mechanism Cones 5 and 6, made in the form of three evenly spaced around the circumference of the lever systems, each of which consists of pivotally connected to each other with their ends the levers 14, 15 and 16 and the Two rings 17 and 18. The ring 17 is rigidly fixed on the support cone 6 and by means of the supports 19 is pivotally connected to the lever 16. The ring 18 is rigidly connected by means of screws 20 with the body 2 and pivotally connected by means of the support 21 to the lever 14. The lever 15 is provided with a roller 22 in contact with the conical surface of the copier 13. The body 2 through the bracket 23 connected to the house of 24 axes of the movement. The copier 13 can be made both in the form of a glass with an internal conical section, with its open part facing the case 2 (Fig. 1), and in the form of a truncated cone mounted on an axial clamp 9 (Fig. 2). The levers 14 and 15 can be made both as separate parts and as one L-shaped lever (Fig. 3). 6 Position 25 on the drawings indicated processing of the workpiece. The device works as follows. First, the copier 13 is adjusted. The lock nut 12 and the copier 13 are retracted to the extreme right position. The workpiece 25 is mounted on the mandrel 1 and fixed against rotation by means of an axial clamp 9. The body 2 is guided to the workpiece 25 so that the plane of rotation of the pressing elements 8 coincides with the end face of the mandrel 1.. After that, the copier 13 is moved to the left until its conical section touches the roller 22. After further movement of the copier 13 to the left, the support cone 6 is also shifted to the left until the required diametral position of the pressing elements 8 is reached, having fixed the copier 13 on the axial clamp 9 with the lock nut 12, the mandrel 1 is set into rotational motion, and the body 2 is given translational axial movement from the actuator 24. When the body 2 moves, the roller 22 slides along the conical working surface of the copier 13, changing its radial position relative to the axis of symmetry of the device. In this case, the ring 17 under the action of the load from the supporting cone 6 and the force of the spring 4 smoothly moves to the right in the axial direction, and the pressing elements 8 - in the radial direction. Upon completion of the rotary stretch process, the presser 9 with Copier 13 is retracted to the right. At the same time, the device also returns to its original position. The finished part (not shown) is removed from the mandrel 1. Correction of the diametrical position of the pressing elements 8 in the process: the device is operated using a micrometer nut 3. The simultaneous engagement of the roller 22 is ensured by changing the axial position of the hinge support 21. When performing the copier the form of a cone mounted on the thread directly on the axial clamp, the device works similarly. In the proposed device, the roller is removed from the copier and

3.11945364

The rigidity of the system of the repetition of finished parts or forces from a copier to a pressure element increases, thereby increasing their quality, as a result of which it decreases.

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Claims (1)

DEVICE FOR ROTARY EXTRACTION OF CONIC PARTS, containing a coaxially mounted mandrel and a housing with support cones, between which pressure elements are placed, an axial clamp with a drive, a copier and a mechanism for adjusting the axial position of the support cones, characterized in that, 'in order to improve quality by to reduce the thickness of the parts, the mechanism for adjusting the axial position of the support cones is made in the form of at least three lever systems evenly spaced around the circumference, each of which consists of the three levers pivotally connected to each other by their ends, the middle of which is equipped with a roller mounted on its other end in contact with the copier, and the two levers of the two levers pivotally connected to the other ends, rigidly connected one to the support cone and the other to the body.