A small high-precision five-axis CNC machine tool

Abstract

The invention provides a five-shaft numerical control machine tool which comprises a Y-shaft moving assembly, an X-shaft moving assembly, an A-shaft swinging assembly, a Z-shaft moving assembly and a B-shaft swinging assembly, wherein the Y-shaft moving assembly, the X-shaft moving assembly and the A-shaft swinging assembly are arranged beside a workbench, and the Z-shaft moving assembly and the B-shaft swinging assembly are arranged beside a cutter. An A shaft is connected with the workbench through an expansion sleeve, and a B shaft is a hollow swinging shaft and is in interference fit with a motor output shaft of the B-shaft swinging assembly. According to the five-shaft numerical control machine tool, the A shaft and the workbench are connected through the expansion sleeve, the manufacturing and installation processes are simplified, and the manufacturing cost of the five-shaft numerical control machine tool is reduced; keyway match is not needed, abrasion does not occur, the service life of the five-shaft numerical control machine tool is prolonged, and the using cost of the five-shaft numerical control machine tool is further reduced; by the adoption of the structure that the B shaft is a hollow swinging shaft, the B-shaft swinging assembly is good in neutral, no gap occurs between the B shaft swinging assembly and the motor output shaft, the swinging precision is high, and the precision of the five-shaft numerical control machine tool is improved; modularization and openness are considered in the design, and the manufacturing cost and maintenance cost of the five-shaft numerical control machine tool are further reduced.

Description

technical field [0001] The invention relates to a five-axis numerical control machine tool, in particular to a low-cost small-scale high-precision five-axis numerical control machine tool. Background technique [0002] The five-axis linkage CNC machine tool system reflects the industrial development level of a country in a sense. The biggest difference between it and the general machine tool is that the tool can always move perpendicular to the workpiece surface through the addition of two rotation axes, so as to realize complex curved surfaces. high-precision machining. [0003] At present, the five-axis CNC machine tools on the market can be divided into the following three structural forms according to the different forms of the distribution of the two rotary motions: (1) double turntable structure, two rotating axes are distributed on the workpiece side; (2) double swing head structure, two rotation axes are distributed on the tool side; (3) single swing head plus singl...

AI Technical Summary

Problems solved by technology

But the design of the swing head is a difficult point, the spindle drive is very complicated, and the series connection of two swing axes makes the rigidity of the machine tool poor

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