Turning cutting off method for rod-shaped workpieces

Abstract

The invention provides a turning cutting off method for rod-shaped workpieces and belongs to the mechanical technology field. The turning cutting off method for the rod-shaped workpieces solves the problem that cut surfaces of finished products have burrs during rod-shaped workpieces machining through the prior art. The turning cutting off method for the rod-shaped workpieces comprises A material loading and B cutting off; in the material loading, one ends of workpieces to be cut are finished product ends and the other ends are excess material ends, the finished product ends of the workpieces to be cut are clamped to chucks of a lathe, and the excess material ends of the workpieces are arranged on the external sides of the chucks; in the cutting off, the chucks of the lathe rotate, the workpieces to be cut are cut off through a common turning method, obtained finished workpieces after cutting off are clamped to the chucks of the lathe, the excess material ends of the workpieces to be cut fall off, and cutting tools continue feeding to perform turning on burrs at cutting surfaces of finished product ends. According to the turning cutting off method for the rod-shaped workpieces, the finished product ends of the workpieces are clamped and cut off, the cut surfaces of the finished product ends are free of burrs, the problem that the burrs are formed on the finished product ends due to the fact that the excess ends are clamped is avoided, and the problem that low product accuracy caused by twice clamping is avoided.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a cutting method of a workpiece, in particular to a turning cutting method of a rod-shaped workpiece. Background technique [0002] Cutting off rotary workpieces with grooving tools is a common processing method in turning. In some industrial applications, there are strict precision requirements for the inner hole, end surface and axial dimension of the part, but there is no requirement for the turning process of the outer cylindrical surface of the part. Under the conventional processing method, after the end face turning and hole turning are completed, the grooving tool is used. cut off. [0003] For example, the Chinese utility model patent specification (application number: 99211426.8, authorized announcement number: CN2364995Y) discloses a special processing machine for pipe fittings, which mainly includes three parts: an automatic feeding mechanism, a processing and cuttin...

AI Technical Summary

Problems solved by technology

[0004] However, the workpieces processed by the special processing machine for pipe fittings often have burr residues at the final fractured part during the cutting process. If no trimming is performed, there will be surface quality defects, and secondary trimming is generally required.

The secondary trimming process requires re-clamping, which has inaccuracies in axial dimensions and reduces processing efficiency

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