Upright type five-shaft processing center Z-direction vertical guide rail unloading devices and manufacturing method

Abstract

The invention relates to upright type five-shaft processing center Z-direction vertical guide rail unloading devices and a manufacturing method. An upright face at one side of an upright post used for loading is provided with a left / right guide rail, and the double-pendulum milling heads of an A shaft and a B shaft make up-and-down movement in the vertical direction of the front face of a Z-direction guide rail by a sliding plate. The invention is characterized in that the left / right guide rail at the front face is respectively provided with a set of A unloading devices, and the A unloading devices are respectively installed below the sliding plate and are combined with a left guide rail and a right guide rail of the upright post; in addition, two sets of B unloading devices are arranged and are respectively installed on a left upper press plate and a right upper press plate at the back face of the left / right guide rail; a rolling bearing bracket and a rolling bearing in the unloading devices are connected by a pin shaft and are locked by a holding screw; and part of load on the double-pendulum heads of the A shaft and the B shaft is borne by the rolling bearing supported on a guide rail face, and the magnitude of unloading force is regulated in such a way that a regulating nut drives the rolling bearing bracket to regulate the magnitude of butterfly spring force, thus part of the load is unloaded. By adopting a bearing increase unloading guide rail device, part of the load (gravity and cutting force) of the guide rail can be shared, the load supporting the guide rail is lightened, and the static friction coefficient of the guide rail is lowered, thus frictional force is reduced, the wear resistance of the guide rail and the smoothness of low-speed movement are enhanced, and creeping is reduced or prevented.

Description

technical field [0001] The invention relates to a Z-direction vertical guide rail unloading device and a manufacturing method on a vertical five-axis machining center with A-axis and B-axis double-swing angle milling heads in a machine tool of machine manufacturing equipment. technical background [0002] Five-axis linkage CNC machine tool is the most difficult and widely used technology in CNC machine tool technology. It integrates computer control, high-performance servo drive and precision machining technology, and is applied to efficient, precise and automatic machining of complex curved surfaces. Internationally, five-axis linkage numerical control technology is regarded as a symbol of a country's industrialization level. [0003] At present, vertical five-axis machining centers are in great demand in the Chinese market. In my country, vertical five-axis machining centers, especially with A and B-axis double-swing angle milling heads, have not been developed by manufac...

AI Technical Summary

Problems solved by technology

However, after the domestic vertical five-axis machining center machine tool with A and B-axis double-swing angle milling heads is assembled, the Z-direction accuracy is unqualified when checking the working accuracy, and the plastic-coated surface of the guide rail is seriously worn when checking the pressure plate.

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