Layered independent multipoint temperature control device applicable to machine tool temperature field differential control

Abstract

The invention discloses a layered independent multipoint temperature control device applicable to machine tool temperature field differential control. The device comprises two groups of cooling circulation primary lines which output cooling liquids at different temperatures, a plurality of cooling circulation branch lines which are connected with the groups of cooling circulation primary lines respectively and a control system, wherein each group of cooling circulation primary line comprises one cooling circulator having temperature detection and liquid level detection functions and one circulating pump; each group of cooling circulation branch lines comprises one independent temperature adjusting box, a cooling pipeline through which thermal loads flow, an input electromagnetic valve group and an output electromagnetic valve group; an inlet of the independent temperature adjusting box is connected with the two groups of the cooling circulation primary lines respectively through the inlet electromagnetic valve group, and an outlet of the independent temperature adjusting box is connected with an inlet of the cooling pipeline; and an outlet of the cooling pipeline is connected with inlets of the two groups of the cooling circulation branch lines respectively through the output electromagnetic valve group, and each group of cooling circulation branch lines is simultaneously communicated with each group of cooling circulation primary lines. The device meets differentiated requirements of different parts of a machine tool for temperature control liquids.

Description

technical field [0001] The invention relates to the technical field of numerical control machine tool processing, in particular to a layered independent multi-point temperature control device suitable for differential control of the temperature field of a machine tool. Background technique [0002] The accuracy of the workpiece processed by the machine tool is generally about 1.5-2 times the accuracy value of the machine tool (considering that the process capability coefficient is generally about 1.33), for example, the position accuracy of ordinary machine tools is 0.025mm, and the hole distance accuracy of the processed workpiece is about 0.04-0.05mm. This is considering the deformation of the process system, the influence of the processing temperature field, the uneven material of the workpiece, the influence of the tool accuracy, etc., among which the change of the temperature field of the machine tool is one of the important factors affecting the machining accuracy. The...

AI Technical Summary

Problems solved by technology

At present, the circulating liquid cooling method generally uses a circulating pump to make the cooling liquid cooled by the cooling device enter the heating mechanism of the machine tool body, take away the heat, and return it to the cooling device to complete the cooling cycle, thereby reducing the temperature of the machine tool heating components and realizing The temperature of the circulating fluid is controlled, but the temperature of the circulating fluid is single, and it is impossible to realize the multi-point differential control of the temperature field of the machine tool

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