Self-adoption multi-oil chamber constant static pressure system with big flow variation range

Abstract

The invention relates to a self-adoption multi-oil chamber constant static pressure system with a big flow variation range. The self-adoption multi-oil chamber constant static pressure system with the big flow variation range is composed of a variable oil supply module and a quantitative oil supply module or a plurality of quantitative oil supply modules. The variable oil supply module and the quantitative oil supply module are composed of a variable frequency motor, a motor, a metering pump, a one-way valve and an oil filter. An overflow valve is arranged between the variable oil supply module, the quantitative oil supply modules and a multi-point gear oil distributor. A pressure gage and a pressure sensor are arranged between the multi-point gear oil distributor and a work table constant static pressure guide rail. A static pressure oil chamber of the constant static pressure guide rail is provided with a temperature sensor. The variable oil supply module provides minimum flow required by a work table static pressure system and a certain flow range. The flow of the quantitative oil supply module is fixed and the value of the flow of the quantitative oil supply module is no less than flow changing value of the variable oil supply module and is used for expanding the flow variation range of the variable oil supply module. Therefore load bearing and automatic adjustment of a lifting range of the work table when a temperature variation range is large are achieved and reliable and stable rotation precision of the work table is guaranteed.

Description

technical field [0001] The invention relates to a self-adaptive multi-oil chamber constant-current static pressure system with a large flow range, which can be applied to a multi-oil chamber constant-current static pressure guide rail with a large load-bearing range and a large temperature range, such as heavy-duty numerical control vertical lathes. Taiwan static pressure rail. Background technique [0002] Heavy-duty CNC vertical lathe workbenches, especially super-heavy-duty CNC vertical lathe workbenches, currently mostly adopt the preloaded constant current static pressure guide rail type, which has a large bearing capacity. From no-load to full load, the static pressure guide rail of the workbench should be able to work normally; if the lift of the workbench is too large, the stiffness of the oil film will decrease, which will affect the machining accuracy; Auxiliary direct contact will cause grinding; therefore, the lift of the workbench should be within a normal rang...

AI Technical Summary

Problems solved by technology

In order to solve the problem of controlling the lifting amount of the constant-current static-pressure guide rail of the heavy-duty CNC vertical lathe workbench within the normal range under different working conditions

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