Full-circumference high-precision positioning rotary table and method based on photoelectric autocollimator
A technology of photoelectric autocollimator and rotary table, which is applied in the direction of instruments, optical devices, measuring devices, etc., can solve the problem of not being able to solve the problem of full-circle high-precision corner positioning, and achieve a breakthrough in the insufficient accuracy of corner positioning and breakthrough limitations sexual effect
Inactive Publication Date: 2021-03-09
TIANJIN UNIV
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Problems solved by technology
However, this solution still cannot solve the problem of full-circumference high-precision corner positioning.
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[0037] The full-circumference high-precision positioning rotary table and method based on the photoelectric autocollimator of the present invention will be described in detail below in conjunction with the embodiments and the accompanying drawings.
[0038] Such as figure 1 , figure 2 As shown, the full-circumference high-precision positioning rotary table based on the photoelectric autocollimator of the present invention includes a rotary shaft 3 connected to the bottom end of the rotary shaft 3 for driving the rotary shaft 3 to rotate forward or reverse The driving device 4, and the photoelectric autocollimator 5 arranged on one side of the driving device 4, the bottom end of the rotary shaft 3 passes through the bearing 9 located in the driving device 4 to connect to the driving motor in the driving device 4. The middle part of the rotary shaft 3 is fixedly provided with a lower rotary table 2, and the top end of the rotary shaft 3 is provided with an upper rotary table 1...
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A full-circumference high-precision positioning rotary table and method based on a photoelectric autocollimator, including a rotary shaft, a drive device connected to the bottom end of the rotary shaft for driving the rotary shaft to rotate forward or reverse, and setting In the photoelectric autocollimator on the side of the driving device, the middle part of the rotary shaft is fixed with a lower turntable, and the top of the rotary shaft is provided with an upper turntable through a locking device, and the lower turntable is in the A plane mirror corresponding to the optical axis of the photoelectric autocollimator is arranged on the side corresponding to the photoelectric autocollimator, and a positioning device for positioning the upper turntable is provided on the outside of the upper turntable. device. The full-circumference high-precision positioning rotary table and method based on the photoelectric autocollimator of the present invention have the advantages of full-circumference and high-precision corner positioning, and are suitable for high-precision and high-resolution angular positioning. The invention can break through the limitation of insufficient precision of the rotation angle positioning of the existing precision rotary workbench.
Description
technical field [0001] The invention relates to a full-circumference positioning rotary worktable. In particular, it relates to a full-circle high-precision positioning rotary table and a method based on a photoelectric autocollimator. Background technique [0002] High-precision rotary table has important applications in occasions such as precision drive, indexing and angle measurement. The corner positioning of the existing rotary table is mostly based on a circular grating or a rotary encoder. This type of angle sensor can achieve full-circle angular positioning, but its angular resolution is limited, especially rotary encoders. Photoelectric autocollimator is an angle measurement instrument that converts angle measurement into linear measurement by using the principle of optical autocollimation. It has the advantages of high precision, high resolution, and independence of measurement distance, but the range of angle measurement is small, and it cannot perform large-an...
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IPC IPC(8): G01B11/27
CPCG01B11/272
Inventor 黄银国杨永赵美蓉郑叶龙
Owner TIANJIN UNIV