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Vehicle element size quality control system and method

A quality control method and technology for auto parts, applied in the direction of comprehensive factory control, comprehensive factory control, electrical program control, etc., can solve problems such as non-discovery

Inactive Publication Date: 2008-08-20
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the dimensional and quality characteristics of auto parts, a more scientific method is needed to effectively evaluate the overall dimensional condition. At present, there is a lack of a reasonable system to realistically reflect the dimensional conditions of auto parts manufacturing, and no relevant literature reports have been found.

Method used

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  • Vehicle element size quality control system and method
  • Vehicle element size quality control system and method
  • Vehicle element size quality control system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0085] Embodiment: 1. Sampling: In this example, the sampling frequency of the line-side inspection tool for auto parts is 5 pieces / time, and each production shift is sampled 4 times at a fixed time every day, and double-shift production is implemented, that is, 8 pieces are obtained every day Sample, take 25 samples, and analyze the measured value of a measuring point on the part;

[0086] The sampling frequency of the three-coordinate measuring machine measurement of parts is 2 pieces per day, and 45 days of data are taken, and a total of 90 pieces are analyzed.

[0087] 2. Data analysis:

[0088] (1) Analysis of the mean-range control chart of lineside gauge measurement

[0089] 1) Generate the measurement report of the lineside gauge, as shown in Table 1.

[0090]

[0091] 2) Calculate the sample mean For example for the first sample x 1 ‾ = 3.06 , The rest and so ...

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PUM

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Abstract

The invention relates to a auto components dimension quality control system and method for method comprising dividing components dimension quality supervising into lines side checking apparatus measuring control and off-line three coordinate measuring machine supervising. According to quality and control claim of product, the line side checking apparatus and off-line three coordinate measuring machine sample the product in different time and turn, detects the sample on detection apparatus or three coordinates checker and gather measuring data, analysis the measuring results and alarm in case of defect. The computer net device manages the defect components information found in data-handling procedure and provides to relative duty terminal. A plurality of terminals can be arranged in each zone in factory. The invention provides criterion for controlling and improving auto components dimension quality, is better than traditional method in efficiency and accuracy, and can efficiently evaluate, monitor and analysis the production chain state.

Description

technical field [0001] The invention belongs to the technical field of manufacturing quality control of auto parts, and in particular relates to a system and method for dimensional quality control of auto parts, which are used for dimensional quality evaluation of auto parts assembly and product quality control analysis. Background technique [0002] Automobile is the main industry and pillar of China's manufacturing industry. In 2006, my country's automobile industry completed an output value of 1.5556 billion yuan, of which the output value of auto parts was 520 billion yuan. The proportion of the parts industry in the automobile industry was about 35% to 36%. The annual output value is expected to be 720 billion yuan. At present, the international competition in the automobile manufacturing industry is becoming increasingly fierce, and the quality of products has become the core competitiveness of enterprises to meet the challenge. Automobile manufacturing and its parts su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418G01B21/04
CPCY02P90/02
Inventor 马俊邓启煌朱世根
Owner DONGHUA UNIV
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