Numerical control milling machine angle-adjustable four-axis rotary workbench

Abstract

The invention relates to a numerical control milling machine angle-adjustable four-axis rotary workbench which comprises an outer shell, an input shaft, a first bevel gear, a second bevel gear, a four-axis workbench body, a swing shaft, an angle adjusting middle shaft, an angle fixing pull nail, a pull nail limiting support, a dial, an inner ring sleeve, a middle sleeve and an outer side sleeve, wherein the first bevel gear and the second bevel gear are mutually engaged, and the inner ring sleeve, the middle sleeve and the outer side sleeve are sequentially sleeved. The input shaft extends outof the outer shell, the other end of the input shaft is provided with the first bevel gear, the outer side sleeve and the middle sleeve clamp a guide rail arranged on the outer shell, the inner ringsleeve extends out of the outer shell and is fixedly connected with the four-axis workbench body, the other end of the inner ring sleeve is provided with the second bevel gear, the swing shaft is sleeved with the inner ring sleeve, the other end of the swing shaft is fixedly connected with the angle adjusting middle shaft, the angle adjusting middle shaft extends out of the outer shell and is connected with the dial, and the angle fixing pull nail is clamped to the dial to be positioned. The angle adjusting structure is added, the function of five-axis positioning machining can be achieved, the part machining range is greatly enlarged, and the effective using rate of a machine tool is improved.

Description

technical field [0001] The invention relates to a rotary workbench of a numerical control milling machine, in particular to an angle-adjustable four-axis rotary workbench of a numerical control milling machine. Background technique [0002] With the continuous improvement of processing technology, the shape of parts tends to be complex, and the position accuracy requirements are higher. The existing four-axis rotary table of CNC milling machine cannot complete the one-line processing of complex cones and other parts, and the secondary clamping processing will Increase the working time, and the positioning accuracy is not easy to guarantee. For some parts processed by five-axis positioning, it can be processed by the swing angle of the four-axis table. At present, similar rotatable four-axis workbenches are relatively rare in the market, so it is necessary to develop a four-axis turntable with a simple structure and adjustable swing angle to make up for this deficiency and r...

AI Technical Summary

Problems solved by technology

[0004] 1. The four-axis rotary table of the CNC milling machine can process simple integral blades, but the processing is too simple, which is prone to overcutting

[0005] 2. Unable to process some cylindrical parts with negative angles (such as milling cutters, drills, etc.)

[0006] 3. When both the shaft side and the end face of the part are to be processed, they must be processed separately on the four-axis and three-axis machine tools. The work efficiency is not high, and secondary positioning errors are prone to occur

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