Clamp used for machining shaft sleeve parts with external threaded surfaces

Abstract

The invention relates to a clamp used for machining shaft sleeve parts with external threaded surfaces. The clamp includes a clamp body, a positioning block, a moving nut, a choke plug and a push rod.The moving nut sleeves the outer circumference surface of the clamp body, and the position of the moving nut corresponds to a clamp body push rod hole in the circumference of the clamp body. The positioning block is installed in the clamp body, and a positioning block push rod hole in the positioning block corresponds to the clamp body push rod hole in the circumference of the clamp body. The push rod penetrates through the clamp body push rod hole and is installed in the positioning block push rod hole in the positioning block, and the two ends of the push rod are respectively installed in push rod holes in the inner circumference surface of the moving nut. The clamp is suitable for numerical control machining of the shaft sleeve parts with the external threaded surfaces, and has the advantages of high machining accuracy, convenient disassembly, high efficiency and good interchangeability, and can be reused. When in use, a dial indicator is used for alignment, so that the runout of an alignment belt of the clamp body and the runout of the clamping end end face are not more than 0.02mm.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a special fixture for numerically controlled processing of shaft sleeve parts with external thread surfaces. Background technique [0002] CNC lathe is the most commonly used equipment in mechanical processing. It turns the rotating material body through the turning tool to meet the forming requirements of the workpiece. Shaft sleeve parts refer to the hollow thin-walled parts in the rotary parts. The outer surface is supported by interference or transition fit with the frame or box hole. The inner hole is mainly used for guiding and supporting. , Piston, slide valve match. Shaft sleeve parts occupy a large proportion of mechanical parts. They are common parts in mechanical processing and are widely used in various types of machinery. Shaft sleeve parts with external thread surface have high requirements for coaxiality and runout during processing, up to 0.01mm, accuracy of...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantages existing in the prior art that it is easy to cause uneven bending deformation of the parts, resulting in large processing errors and low precision, and the positioning end surface of the workpiece in contact with the fixture is screwed and the workpiece and the fixture are damaged. A fixture for machining shaft sleeve parts with external thread surface is proposed

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