Rotation coordinate axis C'-A' conversion device of five-axis NC machine tool

Abstract

The invention relates to a rotation coordinate axis C'-A' conversion device of a five-axis NC machine tool. On the basis of the five-axis NC machine tool provided with X, Y, and Z straight-line coordinate axes as well as a B-axis (tool swing axis) and a C'-axis (workbench rotation axis), the conversion device is firstly connected with the C'-axis rotation center of a machine tool table through a flange at the end part of an input shaft, then through the meshed driving of a large straight-teeth conical gear and a small straight-teeth conical gear, the rotary motion of the C'-axis is converted into the horizontal rotation motion of a middle shaft, and finally through the meshed driving between a small herringbone-teeth cylindrical gear and a large herringbone-teeth cylindrical gear, the rotary motion of the C'-axis is converted into the A'-axis rotary motion of a turntable fixedly connected on the end part of an output shaft, therefore, the rotation coordinate axis conversion from the C' axis to the A' axis of the five-axis NC machine tool is realized. With the rotation coordinate axis C'-A' conversion device of the five-axis NC machine tool, the machining range of the five-axis NC machine tool is further expanded, the original complex parts difficult to process are conveniently and efficiently processed, and the processing efficiency and the processing precision of the complex parts are improved.

Description

Technical field [0001] The present invention relates to a five-axis numerical control machine tool, in particular to a device for converting a rotary coordinate axis C'axis of a five-axis numerical control machine tool into an A'axis. Background technique [0002] Five-axis CNC machine tools are usually configured with three linear coordinate axes and two rotary coordinate axes. Among them, it is configured as a vertical five-axis CNC machine tool with three linear coordinate axes X, Y, and Z, B axis (tool swing axis), and C'axis (table rotary axis), where the Z axis is vertical and upward is the positive direction The X-axis is the horizontal and right-positive linear coordinate axis, the Y-axis positive direction can be determined by the right-hand rule, and then the right-hand screw rule determines the positive direction of the tool swing axis B axis and the table rotation axis C'axis Due to the limitation of machine tool structure layout and B-axis swing angle stroke, some t...

AI Technical Summary

Problems solved by technology

Due to the difficulty of accurate repeat positioning and smooth and smooth transition connection, twice repeated positioning and clamping will undoubtedly lead to a serious reduction in machining accuracy

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