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Method for measuring parabolic curve surface product

A measurement method, parabola technology, applied in the field of measurement of parabolic curved surface products, can solve problems such as few functions, difficult and difficult surveying and inspection of parabolic curved surface, and achieve simple rules, easy rapid automatic measurement, easy digital analysis and processing Effect

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

Therefore, it is often difficult to use a measuring machine to complete the surveying and inspection of parabolic curves
At present, in the general three-coordinate measuring machine, it is possible to complete the measurement of parameters related to the space rotating paraboloid, such as focal coordinates, focal length, etc., because it is a standard element, but it has too few functions; it is very difficult to complete the test and evaluation of the processed paraboloid. because it is a space curve

Method used

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  • Method for measuring parabolic curve surface product
  • Method for measuring parabolic curve surface product
  • Method for measuring parabolic curve surface product

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Embodiment Construction

[0026] The method for measuring the parabolic surface product of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] First, demonstrate the relationship between the space normal of the surface and the measurement space surface:

[0028] like figure 2 As shown, M1 and M2 are equidistant surfaces, the distance is set as d, and a φd sphere is made between the equidistant surfaces, the tangent point between the sphere and the M1 surface is point A, and the tangent plane P1 is made through the tangent point, and the tangent plane P1 is passed through A. The point is the vertical line N1 of the tangent plane P1, then N1 is the normal of the M1 surface and passes through the center of φd. Since it is an equidistant surface, there is a unique intersection point B between the sphere and the M2 surface, and the normal line N1 of the M1 surface On point B, two parallel lines P2 and P3 are drawn to the tangent plane P1, then the ...

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Abstract

The invention relates to a method for measuring a parabolic curve surface product, which comprises the following steps of: establishing a measuring coordinate system in a section of a parabolic curve surface; and measuring the parabolic curve surface by utilizing mean value theorem. The method has the advantages that: when the parabola is measured, errors does not exist theoretically, a difficulty of survey probe radius compensation in the process of measuring a two-dimensional curve is overcome, and point coordinates on the curve are directly measured accurately so as to facilitate data processing; meanwhile, the method can be applied to study and application of other complicated two-dimensional curve precision testing technology, such as various plane cam curves in tobacco machinery and the like.

Description

technical field [0001] The invention relates to a measurement method for surveying, mapping and inspecting parabolic surface products; it is suitable for completing rapid inspection or surveying and mapping of parabolic surface products on measuring machines in the fields of optoelectronic engineering, machinery manufacturing and the like; it is also suitable for completing other two-dimensional curves in three Research and application of precision testing technology on coordinate measuring machine. Background technique [0002] The parabolic surface can bring parallel beams including light waves and electromagnetic waves to the focus through the paraboloid. Similarly, the light waves and electromagnetic waves passing through the focus will be reflected by the paraboloid and will be emitted in parallel. It is widely used and can be seen everywhere in our daily work and life. The design of the paraboloid is generally simple, and the development of the machine tool industry a...

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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