Time fence type numerical control indexing table used for precise measurement

A technology of indexing turntable and time grid, which is applied in computer control, general control system, measuring device, etc., can solve the problems of high work intensity, difficult angle positioning of arcsecond level and higher precision, low work efficiency, etc. Achieve the effect of reducing work intensity, precise angle positioning, and improving work efficiency

Inactive Publication Date: 2010-09-22
CHONGQING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Metering personnel control the handwheel to turn the turntable by hand. It is difficult to accurately perform angular positioning at the angular second level and higher precision. It requires a good feel and repeated adjustments. The work intensity is high and the work efficiency is not high.

Method used

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  • Time fence type numerical control indexing table used for precise measurement
  • Time fence type numerical control indexing table used for precise measurement
  • Time fence type numerical control indexing table used for precise measurement

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Experimental program
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Embodiment Construction

[0020] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] see figure 1 , the grid-type CNC indexing turntable is structurally composed of two parts, a relatively independent CNC box 1 and a mechanical part 2, and the two are only connected by a cable. The numerical control box 1 includes a numerical control system 11 based on a single-chip microcomputer, a sensor circuit 12 and a sensor power supply 13 . The numerical control system 11 based on the single-chip microcomputer includes a single-chip microcomputer 110, a display circuit 111, a keyboard circuit 112, a power supply circuit 113, a reset circuit 114, a stepping motor drive circuit 115, a subdivision circuit 116 and a serial port circuit 117. The power supply circuit 113 supplies power to the single-chip microcomputer through the power supply pin of the single-chip microcomputer 110; the reset circuit 114 is connected with t...

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Abstract

The invention relates to a time fence numerical control indexing turntable used for precision measurement, which comprises a numerical control system based on a single chip microcomputer, a stepping motor, a precision mechanical turntable, and a time fence angle movement sensor. In a precision measurement process, and when the indexing turntable needs to be precisely located and turned to a certain specific angle according to certain steering, an instruction including steering and turning angle information is input through the keyboard of the numerical control system, leading the mechanical turntable to turn according to the steering and the turning angle in the instruction. The time fence angle movement sensor detects the information of the angle turned by the mechanical turntable and feeds back to the numerical control system, thus forming closed loop control, and guaranteeing the turntable to be located to the angle indicated in the instruction, wherein, location precision mainly depends on the precision of the time fence angle movement sensor. As a novel time fence angle movement sensor and the numerical control system based on the stepping motor are adopted, cost on the precise numerical control indexing turntable used for measurement is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of precision machining and detection, and in particular relates to a time grid type numerical control indexing turntable for precision measurement. Background technique [0002] In the field of precision metrology, a large number of precision measurements involving angles often have to achieve arc-second level or even higher accuracy, and it is necessary to quickly and accurately achieve angular positioning. The traditional positioning method is realized by using a precision digital display indexing turntable. The metering personnel rotates the handwheel of the digital display indexing turntable while observing the angle displayed on the digital display table of the indexing turntable, and artificially performs precise positioning of the angle. Metrology personnel control the handwheel to rotate the turntable by hand, so it is difficult to accurately perform angular positioning at the angular second level an...

Claims

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Application Information

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IPC IPC(8): G01B7/30G05B19/401
Inventor 张兴红彭东林陈锡侯杨伟万文略刘小康王先全
Owner CHONGQING UNIV OF TECH
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