Full-circumference high-precision positioning rotary table and method based on photoelectric autocollimator
A photoelectric autocollimator, rotary table technology, applied in the direction of instruments, optical devices, measuring devices, etc., can solve the problem of not being able to solve the problem of high-precision corner positioning in the entire circumference, and achieve breakthroughs in the lack of corner positioning accuracy and limitations. sexual effect
Inactive Publication Date: 2019-01-11
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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The invention relates to a full-circumference high-precision positioning rotary table and method based on a photoelectric autocollimator. The table comprises a rotary shaft, a driving device and a photoelectric autocollimator, wherein the driving device is connected to the bottom end of the rotary shaft for driving the rotary shaft to rotate forward or reverse, and the photoelectric autocollimatoris arranged on one side of the driving device; a lower rotary table is fixedly arranged in the middle of the rotary shaft; an upper rotary table is arranged at the top end of the rotary shaft througha locking device; a planar reflecting mirror is arranged on the side edge of the lower rotary table corresponding to the photoelectric autocollimator and corresponds to an optical axis of the photoelectric autocollimator; and a locating device is arranged on the outer side of the upper rotary table for locating the upper rotary table. The full-circumference high-precision positioning rotary tableand method based on a photoelectric autocollimator in the invention has the advantages of full-circumference and high-precision rotating angle location and is suitable for high-precision and high-resolution angle location. The full-circumference high-precision positioning rotary table and method based on a photoelectric autocollimator in the invention can break through the limitation of insufficient rotating angle locating precision of the existing precise rotary table.
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...
Claims
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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