Easily-adjusting and easily-measuring high-precision closed type constant-pressure static-pressure guide rail throttling device

Abstract

The invention discloses an easily-adjusting and easily-measuring high-precision closed type constant-pressure static-pressure guide rail throttling device. The easily-adjusting and easily-measuring high-precision closed type constant-pressure static-pressure guide rail throttling device comprises a shell body and a core body, wherein the shell body is internally provided with an oil inlet cavity and an oil outlet cavity; the shell body is provided with a core body mounting position joined with the oil inlet cavity and the oil outlet cavity; the core body is mounted in the core body mounting position; the core body is provided with a throttling oil path which is used for communicating the oil inlet cavity and the oil outlet cavity; and the outlet of the core body, in the throttling oil path, is connected with a capillary tube stretching into the oil outlet cavity. According to the throttling device, the oil inlet cavity and the oil outlet cavity which are connected with a guide rail oil cavity and an oil supplying system, and the core body mounting position are formed in the shell body respectively; when the throttling device is used, oil liquid enters the oil inlet cavity by the oil supplying system and enters the oil outlet cavity from the capillary tube through the throttling oil path on the core body, so that the throttling is realized. The throttling device has a simple structure and is convenient to detach; and the length of the capillary tube can be adjusted randomly according to requirements, the machining is simple and the cost is low. The core body is directly provided with a detection oil path for detecting the oil pressure of the oil outlet cavity, so that the oil pressure is convenient to detect and the on-line detection can be realized in real time.

Description

technical field [0001] The invention is used in the field of hydraulic restrictors, in particular to an easy-to-adjust, easy-to-measure, high-precision closed-type constant pressure static pressure guide rail restrictor. Background technique [0002] At present, hydrostatic guide rails are widely used in ultra-precision machine tools. There are multiple oil cavities in the hydrostatic guide rails, and the guide rail is carried by the pressure difference between the upper and lower oil cavities. The hydrostatic guide rail adopts a constant pressure oil supply system, that is, a system that supplies oil to all the oil cavities of the hydrostatic guide rail at the same time by using an oil pump whose output pressure remains basically unchanged. Therefore, each oil chamber must be connected in series with a restrictor, so that the hydrostatic guide rail has the bearing capacity. [0003] The structure of the throttle can be divided into two categories according to the working p...

AI Technical Summary

Problems solved by technology

However, there are many defects in the existing straight-through capillary restrictors: 1. The structure is complicated, and it is troublesome to assemble and disassemble; 2. The length of the capillary is not adjustable, resulting in the throttling ratio; 3. The processing accuracy and matching accuracy are also high; 4. .The oil pressure in the oil outlet chamber of the existing straight-through capillary restrictor cannot be detected or the detection method is complicated

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