Working condition monitoring device of hydrostatic guideway

Abstract

The invention discloses a working condition monitoring device of a hydrostatic guideway. The device comprises an eddy current transducer and a pressure sensor which are arranged on a hydrostatic oil chamber for acquiring a hydrostatic oil chamber working state signal; a hydrostatic guideway sliding surface spacing oil film thickness value is indirectly acquired by the eddy current transducer and is converted into an analog electric quantity signal to be transmitted to a preamplifier for amplification conditioning treatment, then the signal is converted into a digital signal through an A / D (Analog / Digital) converter, and dynamic data is transmitted to an NCU (Network Control Unit) unit by a local network interface; the working condition data of the device can be read from an HMI (Human Machine Interface) liquid crystal screen. The oil film thickness between hydrostatic guideway sliding surfaces is dynamically monitored by using a non-contact type micro-distance measurement and control system device, so the lubrication condition of the hydrostatic guideway is in an optimal set state; if an abnormality occurs, an alarm is immediately given and the machine is stopped to prevent strain of a working surface, sudden stop events or overlarge floating quantity of the guideway due to lack of lubricating oil of the guideway, reduction of the oil film rigidity and the influence on the machining quality of reduction in precision of a machine tool system due to floating.

Description

technical field [0001] The invention relates to the static pressure technology of a sliding guide rail and the field of non-contact macro-distance measurement and control, in particular to a static pressure guide rail operating condition monitoring device. Background technique [0002] At present, the traditional technology in the field of hydrostatic guide rails has the following problems: the capillary constant flow or diaphragm hydrostatic lubrication adjustment mechanism usually used in the traditional technology has a limited adjustment range, especially when the load changes greatly, or the oil When the viscosity of lubricating oil changes due to sharp fluctuations in temperature, it is difficult for traditional adjustment devices of this type to precisely control the oil supply flow. If there is no effective monitoring technology, when the guide rail lacks lubricating oil, events such as guide rail strain and stuffy car are prone to occur, or the floating amount of th...

AI Technical Summary

Problems solved by technology

[0002] At present, the traditional technology in the field of hydrostatic guide rails has the following problems: the capillary constant flow or diaphragm hydrostatic lubrication adjustment mechanism usually used in the traditional technology has a limited adjustment range, especially when the load changes greatly, or the oil When the temperature fluctuates sharply and the viscosity of the lubricating oil changes, it is difficult for the traditional adjustment device to precisely control the oil supply flow.

If there is no effective monitoring technology, when the guide rail lacks lubricating oil, events such as guide rail strain and stuffy car are prone to occur, or the floating amount of the static pressure guide rail is too large, the stiffness of the oil film is reduced, and the floating fluctuations lead to the consequences of reducing the accuracy of the machine tool

The floating amount of the oil film on the moving guide rail of the traditional static pressure guide rail is usually adjusted by monitoring the dial indicator. Since the dial indicator is a contact measuring instrument, it is not suitable for detecting continuous moving objects

Therefore, the traditional technical method cannot monitor the real-time floating state data of the static pressure guide rail in the moving state, which brings troubles to the safe and accurate operation of the equipment

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