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Curvature radius measuring method and apparatus therefor

A technology of curvature radius and detection method, applied in the direction of measuring device, mechanical measuring device, mechanical device, etc., can solve the problems of affecting the machining accuracy of curvature, unable to completely eliminate the rebound characteristic, and unable to measure, etc., to achieve convenient measurement and simple structure , the effect of high measurement accuracy

Inactive Publication Date: 2003-12-31
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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Problems solved by technology

The rebound coefficient is related to the steel material, heating temperature, and quenching water pressure. It is an unmeasurable quantity, which affects the curvature processing accuracy.
Since a section of the arc in the heated deformation area is pressed by the forming wheel and cannot rebound, the dynamic single-point measurement method cannot completely eliminate the influence of the rebound characteristic

Method used

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  • Curvature radius measuring method and apparatus therefor
  • Curvature radius measuring method and apparatus therefor
  • Curvature radius measuring method and apparatus therefor

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Embodiment Construction

[0015] The present invention will be described in detail below in conjunction with the following embodiments and accompanying drawings.

[0016] The method: use a rotary encoder coaxial with the top detection wheel of the ball scale guide rod to detect the displacement along the curve of the steel material (measured point, X axis), and use a transmitter to detect through the guide rod on the ball scale scale. The linear displacement of the steel material movement (chord height, Y axis), the rotary encoder and the transmitter respectively convert the detected signal into a TTL square wave pulse and send it to the counting card with addition and subtraction functions in the computer, and then calculate The program calculates the actual radius of curvature through the functional relationship; the counting card is inserted on the expansion slot in the computer, and is connected with the computer through the DB25 interface; the formula for calculating the radius of curvature is: R=(...

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Abstract

The present invention is curvature radius detecting method and device. The curvature radius detecting method includes detecting curve displacement along steel material with rotary coder coaxial with the detecting wheel in the top of spherical grate rule guide rod, feeding the detection signal from the rotary coder and transducer to the counting card inside the computer, and program calculating the practical curvature radius based on the function relationship. The curvature radius detecting device includes spherical grate rule structure comprising spherical grate rule guide rod and transducer installed on triangular detection support, compression spring sleeved on the guide rod, detection wheel installed in front of the guide rod, rotary coder coaxial with the detection wheel and computer with counting card connected to the transducers in the rotary coder and block. The present invention has high measurement precision and is used in the curvature measurement in submarine rib bending and quenching machine.

Description

technical field [0001] The invention relates to a curvature radius measurement technology, in particular to a curvature radius measurement method and a special device. Background technique [0002] The new submarine rib bending and quenching machine (developed by the Shenyang Institute of Automation, Chinese Academy of Sciences) is currently the most advanced CNC machining machine tool integrating mechanics, electricity and hydraulics in China. Because it uses a grating ruler as a curvature detection element, and uses a dynamic single-point measurement algorithm to calculate the curvature, it can detect changes in the radius of curvature in real time, and can form a curvature closed loop for control, so it has high processing accuracy. However, since there are as many as a dozen types of submarine ribs, each type of steel material must use a matching induction heating coil. The parameter value of the dynamic single-point measurement algorithm is related to the type of the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B5/213G01B5/24G06F7/544
Inventor 吴景辉朱军李令奇
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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