Multi-cutter progressive turning machine tool of slender shafts

Abstract

The invention discloses a multi-cutter progressive turning machine tool of slender shafts, belongs to the technical field of precision machining, counteracts one-way force of cutters on workpieces during machining, eliminates the deformation condition of slender shaft workpieces caused by centrifugal force generated during centering and machining of the traditional lathe and solves the technical problem that the machining size of the workpieces is limited at the same time. The machine tool comprises a machine tool body unit, a multi-tool machining unit, a left pre-tightening force unit and a right pre-tightening force unit, wherein the left pre-tightening force unit and the right pre-tightening force unit are distributed at the two ends of the machine tool body unit and drive the multi-tool machining unit to reciprocate in the axial direction; and the multi-cutter machining unit is arranged on the machine tool body unit and does reciprocating motion on the machine tool body unit to machine the slender shafts. The main motion of the traditional lathe is workpiece rotation; weak-rigidity tiny slender shafts can generate centrifugal force during rotation to cause workpiece deformation; the main motion of the lathe is improved from traditional workpiece rotation to cutter set rotation by the device; workpiece deformation is avoided; and the machining precision is improved.

Description

technical field [0001] The invention belongs to the technical field of precision machining, and in particular relates to a slender shaft multi-cutter progressive turning machine tool. Background technique [0002] With the popularization of miniaturization and lightweight design concepts, there is an increasing demand for the processing of some tiny parts that are widely used in industrial production and mechanical assembly. Among them, the tiny slender shaft is the most typical tiny part. Turning is one of the most basic material removal machining techniques and is the most widely used machining method for producing slender shafts. However, when the traditional turning technology is processing the slender shaft, it is basically single-tool cutting. The radial one-way force of the turning tool on the slender shaft will seriously deform the slender shaft, making it difficult to ensure the shape and position accuracy; [0003] Because the rigidity of the slender shaft is poor...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention provides a multi-knife progressive turning device, which offsets the one-way force of the tool on the workpiece during processing, and eliminates the slender shaft caused by the centrifugal force generated by the traditional lathe tip and processing. The deformation of similar workpieces, and at the same time solve the technical problems that limit the processing size of workpieces

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