Ultraprecise electrohydraulic servocontrol static-pressure linear slide way

Abstract

An ultraprecise electrohydraulic servocontrol static-pressure linear slide way which comprises a lathe bed and a slide carriage used for placing the workpiece. The bottom surface of the slide carriageis fixedly installed with a slider which is internally formed with a groove with a downwards opening. The lathe bed is fixedly provided with a slide way which can be inserted into the groove of the slider correspondingly with the groove of the slider. The inner peripheral wall of the groove of the slider is provided with a plurality of pressure oil chambers which has lubricating and bearing function after combined with the slide way. The plurality of pressure oil chambers are communicated with an oil supplying system through the oil way. The two sides of each pressure oil chamber are respectively provided with an oil return groove which is communicated with an oil return box. Each oil way for supplying oil to the pressure oil chamber is provided with a throttling valve. The inner peripheral wall of the groove of the slider is provided with four pressure oil chambers which are communicated with the oil supplying system through the throttling valves installed on the oil way. The ultraprecise electrohydraulic servocontrol static-pressure linear slide way of the invention can obtain extensive application at the state that the electrohydraulic servo-control is not adopted. The few application of ultrahigh precision requirement can be realized through using the electrohydraulic servo control.

Description

technical field [0001] The invention belongs to a static pressure linear guide, in particular to an ultra-precision electro-hydraulic servo-controlled static pressure linear guide with small friction coefficient, small driving force and high speed, and high vibration absorption capacity, which can reduce the impact vibration of machine tools. guide. Background technique [0002] Hydrostatic guide rails are often used on large-scale precision machine tools. When using static pressure guide rails, the moving parts of the machine tool are lifted by oil pressure, and there is an oil film with a thickness of 0.01-0.04mm between the moving part and the static part of the guide rail, eliminating the need for dynamic and static guide rails. There is friction between them, so the pure liquid friction resistance is formed, the friction coefficient is only 0.0005, and the metal-to-metal friction coefficient is above 0.1, so the use of hydrostatic guide rails can reduce the friction for...

AI Technical Summary

Problems solved by technology

[0003] 1. A reliable oil supply system is required, which consumes power and costs high

[0004] 2. The hydraulic oil in the hydrostatic guide rail oil supply system generates heat during the pressure cycle, so a cooler is required

[0005] 3. The oil circuit system of the traditional static pressure guide rail is partly open, so it is easy to leak and pollute the environment. The oil is often polluted during use and causes the guide rail to wear

[0006] 4. When an eccentric load occurs, the anti-eccentric load stiffness of the traditional static pressure guide rail is low

[0007] 5. So far, the application of static pressure guide rails is still in the stage of design and manufacture by whoever uses them. There is no mass-produced standardized production by professional factories like ball screws and linear rolling guides, which not only guarantees good quality, but also has price advantage

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