Method for monitoring circular shape errors with spatial correlation

A spatial correlation, circular technology, applied in the direction of instrument, design optimization/simulation, calculation, etc., can solve the problem of incapable of circular modeling, and achieve the effect of improving detection accuracy

Active Publication Date: 2019-04-12
力度工业智能科技(苏州)有限公司
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Problems solved by technology

However, this method is not suitable for the situation where there is a spatial correlation between the measured values, and it cannot truly model the geometric shape error of the circle

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  • Method for monitoring circular shape errors with spatial correlation
  • Method for monitoring circular shape errors with spatial correlation
  • Method for monitoring circular shape errors with spatial correlation

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Embodiment Construction

[0026] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0027] see figure 1 , a method for monitoring circular shape errors with spatial correlation, comprising the following steps:

[0028] Step 1: Measure the circular surface and obtain the three-dimensional coordinate data of each measurement point. Measure the circular surface at equal intervals to obtain the three-coordinate data (x, y, z) of each measurement point;

[0029] Step 2: Processing the data, specifically, converting the coordinates of the measuring points in the three-dimension...

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Abstract

The invention discloses a method for monitoring circular shape errors with spatial correlation, which comprises the following steps of: measuring a circular shape, specifically, measuring coordinatesof a plurality of points of a circular contour by using a coordinate measuring machine; data processing: selecting an appropriate model according to the measurement data; performing parameter monitoring on the model, and judging whether the circular shape meets the quality requirement or not; and an out-of-control sample is identified by using the control chart to reflect the production process state. According to the circular geometric error monitoring method with spatial correlation provided by the invention, the error value can be reflected more accurately, the influence of the spatial correlation on the measurement result can be removed, and the recognition rate of unqualified products can be effectively improved. The defect that traditional quality monitoring cannot reflect the geometrical shape of the circular part and the defect of spatial correlation caused by a large number of measuring points are overcome.

Description

technical field [0001] The invention relates to quality monitoring of circular parts, in particular to a method for monitoring circular shape errors with spatial correlation. Background technique [0002] Shape and position error is an important control object of mechanical parts in modern manufacturing, which directly affects the quality of products. The shape error of the circle is an important indicator of high-precision rotating parts. The improvement of manufacturing accuracy puts forward higher requirements for the accurate measurement of circular shape errors. The traditional precision index of circular shape error is roundness, and the roundness measurement includes methods such as rotary axis method, three-point method, two-point method, projection method and coordinate method. These methods consider the actual circular surface to determine the minimum containment area (two concentric circular surfaces with the smallest radius difference contain all the actual cir...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20Y02P90/02
Inventor 杜世昌范圣耀王勇
Owner 力度工业智能科技(苏州)有限公司
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