A kind of processing method of titanium alloy thin-walled parts

Abstract

The invention discloses a processing method for titanium alloy thin-walled parts. The method comprises the following steps: hugging the small end of the thin-walled bushing with a tire, roughing the inner wall of the thin-walled bushing with a lathe; Carry out heat treatment for the wall sleeve; carry out semi-finishing and finishing machining, and obtain the inner taper hole with a boring tool; use the inner taper hole as a reference, insert the mandrel into the inner taper hole; the lathe chuck clamps the big end of the mandrel, and the thin-walled The internal thread at the end of the sleeve is connected to the external thread of the process plug, and the bolt passes through the internal cavity opened by the process plug to connect with the mandrel thread; The wall sleeve is separated from the mandrel; the lathe chuck clamps the big end of the mandrel, and the internal thread at the end of the thin-walled sleeve is connected to the external thread of the process plug, and the bolt passes through the inner cavity opened by the process plug and the core Shaft threaded connection; each outer circle of the thin-walled bushing is finely machined. The invention improves dimensional stability and surface roughness.

Description

technical field [0001] The invention belongs to the field of mechanical processing, and in particular relates to a processing method for titanium alloy thin-walled parts. Background technique [0002] Titanium alloy materials have low elastic modulus, small deformation coefficient, and poor thermal conductivity, which lead to poor cutting performance. Especially when thin-walled parts are processed with inner holes and outer circles, it is difficult for the tool to be fully cooled, resulting in thin-walled parts. The deformation of the parts is large, and the thin-walled bushing is the most critical part in the machining of the entire transmission mechanism. The quality of its processing seriously affects the performance parameters of the entire transmission mechanism experiment. The surface roughness of the inner hole and the outer circle of the previously processed thin-walled bushing parts is poor. The general processing method is to drill the basic hole first, and then p...

AI Technical Summary

Problems solved by technology

[0002] Titanium alloy materials have low elastic modulus, small deformation coefficient, and poor thermal conductivity, which lead to poor cutting performance. Especially when thin-walled parts are processed with inner holes and outer circles, it is difficult for the tool to be fully cooled, resulting in thin-walled parts. The deformation of the parts is large, and the thin-walled shaft sleeve is the most critical part in the machining of the entire transmission mechanism. The quality of its processing seriously affects the performance parameters of the entire transmission mechanism experiment.

The surface roughness of the inner hole and the outer circle of the previously processed thin-walled bushing parts is poor. The general processing method is to drill the basic hole first, and then process it with ordinary turning tools. It is difficult to achieve a surface roughness below 0.8. The size and shape tolerance of the outer circle is out of tolerance, resulting in the matching contact surface between the tapered surface of the inner hole and the outer tapered surface of the shaft not reaching more than 75% of the required

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