Numerically controlled lathe clamp assembly for machining rotary pipe joints with balls and machining method thereof

Abstract

The invention discloses a numerically controlled lathe clamp assembly for machining rotary pipe joints with balls and a method for machining rotating pipe joints with the balls on a numerically controlled lathe by using the clamp assembly. The clamp comprises a first working step clamp and a second working step clamp, wherein the first working step clamp is used for clamping a workpiece so as to machine a structure of one side of the workpiece, and the first working step clamp comprises a clamp base, a clamp pressing plate and a fastener; the second working step clamp is used for positioning acharacteristic surface processed by a first procedure to clamp a rotary pipe joint so as to machine a structure of of the other side of the rotary pipe joint; the clamp base is provided with a clamping handle, a workpiece positioning structure and a pressing plate assembling structure; and the clamp pressing plate is provided with a workpiece positioning structure, a machining avoiding area and afastener assembling structure. Through the clamp assembly, the procedures of milling planes, turning step inner holes and boring inner cavities are combined; the numerically controlled lathe is usedfor machining, so that the clamping errors caused by clamping reference conversion are reduced; meanwhile, the numerically controlled lathe is used for replacing a milling machine to mill the planes;and the machining time is shortened.

Description

technical field [0001] The invention belongs to the field of fixtures for machining machine tools, in particular to a fixture for numerically controlled lathes for mechanically machining rotary pipe joints with spheres. Background technique [0002] In the processing of rotary pipe joints with spheres, since the sphere part has to be processed with parallel end faces and stepped holes perpendicular to the end faces, there are many processing procedures, especially for titanium alloys, and the single-process processing time is relatively long. The usual process route is as follows: First, the raw material bar such as figure 1 As shown, the thread, cone surface, sphere, and the inner hole of the threaded end are processed by a CNC lathe, and the center needs to be turned and clamped once; and then as shown figure 2 As shown, the milling machine is used for clamping and thread positioning, and the planes on both sides of the spherical end are milled; finally, a hydraulic thre...

AI Technical Summary

Problems solved by technology

[0003] In the whole processing process, a variety of machine tools are used, and the process route is complicated, especially the clamping error of the three-jaw chuck type fixture, resulting in poor processing accuracy, especially the parallelism of the planes at both ends of the spherical part and the steps at both ends The coaxiality of the hole is poor, it is difficult to ensure that it is within 0.05mm, and because of the long clamping time and processing time, the economy is not good

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