Automatic aligning combined clamp

Abstract

The invention discloses an automatic aligning combined clamp which comprises a rear positioning shaft (1) and a positioning air cylinder (2). The rear positioning shaft (1) is mounted at the rear part of a hollowing main shaft (3) of a machine tool; and the positioning air cylinder (2) is mounted on a guide rail of the machine tool. The automatic aligning combined clamp also comprises an externally-clamped automatic aligning chuck mechanism which comprises a chuck body, an air cylinder component, an aligning mechanism and a locking mechanism; the chuck body is mounted at the front end of the hollowing main shaft (3); the air cylinder component, the aligning mechanism and the locking mechanism are all mounted in the chuck body; the locking mechanism is radially and movably connected with the chuck body by the aligning mechanism; and the air cylinder component which can drive the locking mechanism to radially clamp a processed piece when the locking mechanism axially moves backwards is sleeved outside the locking mechanism. The automatic aligning combined clamp does not need to manually adjust the inner hole concentricity of a steel tube and can improve the production efficiency, ensure the product quality and produce products in batch.

Description

technical field [0001] The present invention relates to a clamp, and more precisely relates to an automatic self-aligning combined clamp. Background technique [0002] Low-alloy seamless steel pipes through multi-stage finish rolling have been widely used in hydraulic and pneumatic cylinders and other products that require high inner cavity precision. The cylinders manufactured by this process are usually not processed inside and outside the blank. Machining primary processing, the processing benchmark is based on the original rolling forming surface of the blank. This cylinder has the characteristics of high strength, certain cold working elongation, good weldability, high production efficiency and low manufacturing cost. However, when the finished rolled steel pipe is manufactured, there will be different degrees of concentricity deviation between the inner and outer diameters, especially as the wall thickness of the pipe body increases, the error will be greater, and it c...

AI Technical Summary

Problems solved by technology

The existing technology is to adjust the concentricity of the inner reference under the external clamping through the conventional clamps attached to the machine tool, but this kind of existing technology is to adjust the concentricity of the inner hole of the steel pipe through manual measurement, which makes the production efficiency low, and the manual adjustment will cause certain problems. error, so that the quality of the product is not easy to guarantee, but also makes it difficult to put the product into effective mass production

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