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Identical graduation method for measuring contour curve of Archimedes screw cam

A technology of Archimedes spiral and cam profile, applied in the direction of measuring devices, instruments, etc., can solve problems such as difficult and accurate measurement of Archimedes spiral, and achieve data analysis and processing, high efficiency, high measurement accuracy and efficiency effect

Inactive Publication Date: 2011-04-27
HONGTA TOBACCO GRP
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Problems solved by technology

For the unspecified Archimedes curve equation, the function differential method cannot be used to calculate the normal vector of the measured point. Therefore, if the stylus radius compensation is activated and there is no accurate normal vector, it is difficult to use the measuring machine to complete Accurate Measurement of Archimedes' Spiral

Method used

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  • Identical graduation method for measuring contour curve of Archimedes screw cam
  • Identical graduation method for measuring contour curve of Archimedes screw cam
  • Identical graduation method for measuring contour curve of Archimedes screw cam

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Embodiment Construction

[0030] The equal division measurement method of the Archimedes spiral cam profile curve of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] In this embodiment, three-coordinate measuring machine SCIROCCO 140907, measurement software TUTOR, and DEAPPL language programming are used to realize measurement automation.

[0032] Firstly, a measuring coordinate system is established on the Archimedes spiral cam surface.

[0033] Such as image 3 and Figure 4 As shown, the polar coordinate system is used in the measurement coordinate system of the Archimedes spiral cam surface, and the origin is set at the base circle center of the Archimedes spiral cam.

[0034] Secondly, the contour curve of the Archimedes spiral cam is measured by the equal division measurement method.

[0035] 1) Turn off the radius compensation of the stylus and calculate the number of measurement points M. If the range of the measurement curve is...

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Abstract

The invention discloses an identical graduation method for measuring a contour curve of an Archimedes screw cam, which comprises the following steps of: establishing a measuring coordinate system on the face of the Archimedes screw cam; and measuring the contour curve by using a polar coordinate system and adopting an identical graduation measuring method. The vector direction of the measurement points to an original point, and an arrow approaches and measures the coordinates of an Aj point from a Pj position along the radial direction by using a measuring machine until the whole contour curve is measured; and the generated data file can be read by universal software so as to realize arrow radius compensation and reverse engineering and the like. The detection of the curve and the regression analysis in any curve range are accomplished by the generated data file. The method is applied in the detection of the Archimedes screw cam, the linear analysis on a cam two-dimensional curve, the study on a cam mechanism, the study on measurement technology, equation reverse, reverse engineering and the like in the machine manufacturing industry.

Description

technical field [0001] The invention relates to the technical field of surveying and inspecting Archimedes spiral curves using the equidistance measurement method for coordinate measuring machines, in particular to a method for completing the Archimedes spiral curve test and its curve regression analysis by closing the radius compensation of the stylus. In the machinery manufacturing industry, the inspection of Archimedes cams, the linear analysis of cam curves, the research of cam mechanisms, the research of metrology technology, the inversion of equations and reverse engineering, etc. Background technique [0002] The Archimedes spiral is widely used in mechanical design and precision instrument manufacturing. Since the lift change of the Archimedes spiral is a linear function of the angle change, it can be applied to the design of precision measuring instruments for length and the machine tool industry. Therefore, the Archimedes spiral is widely used in metering; in the d...

Claims

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Application Information

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IPC IPC(8): G01B21/20
Inventor 李存华祁跃东吕小波
Owner HONGTA TOBACCO GRP
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