Special tooling for turning high-precision thin-wall cylinder liner bores

Abstract

The invention discloses a special tooling for turning high-precision thin-wall cylinder liner bores, which comprises an internal taper sleeve, an elastic clamp and an axial positioning disk, the left end of the internal taper sleeve is connected with a spindle flange, the right end of the internal taper sleeve is connected with the axial positioning disk, the right side of the internal taper sleeve is provided with a taper hole, the taper hole is connected with a cylindrical hole of the left side, the sidewall of one side of the cylindrical hole is provided with a guide hole, a vent hole is formed in the left side of the guide hole, the elastic clamp comprises an internal cylindrical hole and an external conical surface, the external conical surface is connected with an external cylindrical surface, a pull rod holder is arranged on the external cylindrical surface, the pull rod holder is provided with a pull rod-fixing hole, a washer is arranged at the right side of the pull rod-fixing hole, the outer diameter of the washer is greater than the inner diameter of the pull rod-fixing hole, the excircle of the end of an oil cylinder pull rod is matched with the pull rod-fixing hole, the end of the oil cylinder pull rod is provided with a threaded hole, and the oil cylinder pull rod is connected with the washer. The structural precision of the special tooling is high, a thin-wall cylinder liner can be positioned and clamped reliably, clamping stress is uniform, the deformation of the thin-wall cylinder liner caused by clamping force is reduced, and the precision requirement of workpieces is met.

Description

technical field [0001] The invention relates to the technical field of mechanical processing equipment, in particular to a special tool for turning the inner hole of a high-precision thin-walled cylinder liner for automobile and ship engines. Background technique [0002] With the development of the automobile and ship industry, the precision requirements for auto parts are getting higher and higher, which puts forward higher requirements for various process equipment for processing such parts. The cylinder liner is an important part of the engine. Its processing Precision directly affects the overall practical performance of the engine. The characteristic of the cylinder liner is that the concentricity of the outer circle and the inner hole and the cylindricity of the inner hole are relatively high. Because it is a thin-walled part, the wall thickness is about 1mm, and it is required to be measured within the circumference of the workpiece. The thickness difference between ...

AI Technical Summary

Problems solved by technology

When the tooling in the prior art clamps the inner hole of the outer circle finish turning, the defect is that it is very easy to produce clamping deformation and other technical problems, resulting in a reduction in the machining accuracy of the cylinder liner, and it is difficult to ensure that the thin-walled cylinder liner Design and process requirements, easy to produce substandard products, resulting in waste and increased production costs

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