SU1690906A1 - Device for rotary stretching - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to rotary drawing on shells of shell parts from sheet blanks. The purpose of the invention is to increase the durability of the tool when machining shells with a low flange height. The device comprises a mandrel 1, a roll-up single-roller head 2 with roller 4 mounted on axis 3. Roller 4 is mounted on bearing 5. Axis 3 lies in the plane of symmetry of roller 4 perpendicular to the axis of rotation. The clamp 7 holds the workpiece 6 on the mandrel 1. The supply of the device with a single-roller head, the roller of which is mounted on a bearing and mounted on an axis, can significantly increase the resistance of the pressing tool. 1 il. $ 8 (I 05 SO about so about O5

Description

316

The invention relates to the processing of metals by pressure, in particular, to rotary drawing on machine tools of shell parts from sheet blanks, and is intended for use in mechanical engineering, the aeronautical chemical and electrotechnical industry and other branches of the national economy.

The purpose of the invention is to increase the durability of the tool when machining shells with a low flange height.

The drawing shows the structure of the device.

The device comprises a mandrel 1, a rotating one-roller head in the form of a housing 2 with a roller C mounted on axis 3. The roller is mounted on a% bearing. The workpiece 6 holds the presser 7 on the mandrel 1. The single-roller head is mounted on a support 8, which can be reciprocated along and across the longitudinal axis of the mandrel 1. The axis of rotation of the single-roller head is located in the plane of symmetry, perpendicular to the axis of rotation 3 of roller A.

The device works as follows.

A round billet b is placed on the end of the mandrel 1, centered and fixed with clamp 1. Moving the caliper 8 in the longitudinal and transverse directions, set the head 2 to the position when roller k touches the workpiece 6. At the same time, the gap between the top of the roller and the mandrel

0

five

0

25

thirty

35

must match the wall thickness of the finished part.

Then, the head 2 is turned on and a support 8 is fed. The workpiece is deformed by the oppositely arranged working surfaces of the roller. During one revolution of the head roller k twice deforms the workpiece.

Since the rotational drawing of shells with a small flange height is low, the resistance of the known multi-roll heads is low, the device is provided with a single-roller head mounted on a bearing and mounted on an axis perpendicular to the axis of rotation in the plane of symmetry of the roller.

Claims (1)

Invention Formula A rotary drawing device comprising a mandrel, a face clamp, a pressing tool mounted in a housing rotatably mounted from a drive around an axis, perpendicular to the machining axis, and reciprocating along and across the longitudinal axis of the mandrel, characterized in that , in order to increase tool life when machining shells with a small flange height, the pressing tool is designed as a single-roll head, the axis of rotation of which is located in the plane of symmetry of the roller perpendicular to the axis of its rotation.