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

A technology of static pressure turntable and experimental device, which is applied in the direction of measuring devices, instruments, and mechanical parts testing, etc., and can solve problems such as the decline of oil film bearing capacity, obvious circumferential vibration of turntable, oil film oscillation, etc.

Active Publication Date: 2013-03-20
BEIJING UNIV OF TECH
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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 ...

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

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Embodiment Construction

[0054] A preferred embodiment of the quantitative static pressure turntable dynamic and static characteristics experimental device of the present invention will be described in detail below in conjunction with the working principle and the structural drawings.

[0055] The structure of this embodiment is as Figure 1-3 As shown, the middle of the beam of the loading bracket 14 is connected to the loading arm 6 through a shaft. The structure of the loading bracket 14 is shown in Figure 6(a) and (b), which is composed of two gate-shaped frames intersecting to form a stable frame structure; one end of the loading arm 6 passes through the shaft and the X-shaped beam of the loading bracket 14 The middle connection, the structure of the loading arm 6 is shown in Figure 5 (a), (b).

[0056] The loading device 5 is installed under the loading arm 6, and can move along the loading arm 6 through two roller bearings to realize central loading and partial loading. The loading device 5 i...

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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...

Claims

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Application Information

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IPC IPC(8): G01M13/00
Inventor 蔡力钢董湘敏赵永胜史霄王义达
Owner BEIJING UNIV OF TECH
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