A slender threaded shaft turning device for convenient initial cutting

Abstract

The invention discloses a long and thin threaded shaft turning device facilitating initial cut-in. The device for long and thin threaded shaft turning of a lathe is mounted on a large carriage of the lathe and comprises a base, a guide sleeve, a telescopic sleeve, a tool reset ring, thread length control mechanisms, tool assemblies and cut-in mechanisms. The device has the beneficial effects that due to the arranged cut-in mechanisms, the tool assemblies can cut in a workpiece without moving the large carriage of the lathe, operation is simplified, and efficiency is improved; due to the arrangement of three sets of turning tools distributed circumferentially and evenly, threaded shaft deformation in the turning process is reduced, and machining quality is guaranteed; due to arranged adjusting thread sleeves, the length of a thread on each to-be-turned long and thin shaft can be controlled precisely; due to the arrangement of inclined faces A and inclined faces C capable of being in contact with each other or being separated from each other, thread ending machining can be achieved precisely, and the tool collapse situation is effectively avoided; and due to the arranged tool reset ring, the three sets of turning tools can contract towards the center at the same time, and operation is fast and convenient.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a turning device for a slender threaded shaft which is convenient for initial cutting. Background technique [0002] For threads with small nominal diameter, long processing length and poor workpiece rigidity, it is difficult to clamp the workpiece during processing, the thread cutting is not stable, and the workpiece is difficult to maintain a stable state, etc., resulting in bending deformation of the axis of the external thread of the slender rod and irregular thread profile. , disordered teeth and other problems, the material of the external threaded part of the slender rod has good plasticity and toughness, but poor hardness. In addition, if the threaded part is located in the middle of the slender shaft, due to the small diameter and poor rigidity of the workpiece, a large deformation will occur during the cutting process and the machining cannot continue. C...

AI Technical Summary

Problems solved by technology

[0002] For threads with small nominal diameter, long processing length and poor workpiece rigidity, it is difficult to clamp the workpiece during processing, the thread cutting is not stable, and the workpiece is difficult to maintain a stable state, etc., resulting in bending deformation of the axis of the external thread of the slender rod and irregular thread profile. , chaotic teeth and other problems, the material of the external threaded part of the slender rod has good plasticity and toughness, but poor hardness

In addition, if the threaded part is located in the middle of the slender shaft, due to the small diameter and poor rigidity of the workpiece, a large deformation will occur during the cutting process and the machining cannot continue

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