Quantitive type experimental device for dynamic and static performances of static-pressure rotary table

Abstract

The invention provides a quantitive type experimental device for dynamic and static performances of a static-pressure rotary table, and belongs to the field of machinery design and manufacture. According to the experimental device, a loading device (5) and a loading arm (6) are used for changing magnitude of loads or changing oil supply pressure to control the distance between a static-pressure oil cushion (10) and a rotary table disc chuck (7), a pressure sensor (12) is used for measuring pressure in an oil cavity, an eddy current displacement sensor (11) is used for measuring the thickness of an oil film, a thermocouple temperature sensor (3) is used for measuring oil temperature, a force sensor (4) is used for obtaining magnitude of loading force, a pressure gauge a (15) on a multi-head pump at an oil inlet in the oil cavity is used for measuring pressure of the oil inlet of the oil cavity, and a pressure gauge b (16) arranged between an oil pump and the multi-head pump is used for measuring the oil supply pressure of the static-pressure rotary table. By means of the experimental device, a test of the dynamic and static performances of the static-pressure rotary table is carried out under the condition that temperature is between minus 10 DEG C and 60 DEG C and pressure is not more than 100 MPa, and the experimental device provides guarantee for solving problems in engineering, optimizing structural parameters of the rotary table, and improving machining precision of the rotary table.

Description

technical field [0001] The invention is a quantitative static pressure turntable dynamic and static characteristic experimental device, which belongs to the field of mechanical design and manufacture. Background technique [0002] With the demand for high-precision functional components of large-scale high-end CNC machine tools in China, the static pressure turntable, as one of the main functional components of CNC machine tools, plays a decisive role in improving the processing quality of workpieces. [0003] At present, the problems existing in the static pressure turntable are: the structural rigidity, assembly process, and oil film characteristics of the static pressure turntable have a great influence on its dynamic characteristics; One of the bottlenecks for the further improvement of capacity and rigidity is manifested by the decrease of oil film bearing capacity and the deterioration of the stability of the turntable; the rigidity of the transmission system and the c...

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Problems solved by technology

[0003] At present, the problems existing in the static pressure turntable are: the structural rigidity, assembly process, and oil film characteristics of the static pressure turntable have a great influence on its dynamic characteristics; One of the bottlenecks for the further improvement of capacity and rigidity is manifested by the decrease of oil film bearing capacity and the deterioration of the stability of the turntable; the rigidity of the transmission system and the circumferential vibration of the turntable caused by system damping are relatively obvious; the oil film oscillation occurs during processing

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