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Automobile production line quality management system and method

An automobile production line and quality management technology, applied in general control systems, control/regulation systems, comprehensive factory control, etc., can solve the problem that the production line cannot achieve quality trend prediction, and achieve quality prediction and traceability management, small size, cost low cost effect

Active Publication Date: 2020-08-07
FUZHOU TAIQUAN IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a quality management system and method for an automobile production line to solve the problem in the prior art that the quality trend prediction cannot be realized for complex production lines

Method used

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  • Automobile production line quality management system and method
  • Automobile production line quality management system and method
  • Automobile production line quality management system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0059] A kind of automobile production line quality management system, comprises PLC2, raspberry pie 1, server 5 and alarm 4; Described raspberry pie 1 is equipped with MySql database, and described PLC2 is connected with respectively being used for identifying product number and measurement process data The sensor 3, the raspberry pie 1 and the PLC2 are connected through MODBUS TCP / IP protocol communication, if the traditional PLC2 has no network cable port, RS-232 / 485 is used for communication, and the raspberry pie 1 and the alarm 4 are connected electrically Connection; the server 5 is connected to the Raspberry Pi 1 through communication.

[0060] The above-mentioned management method of the quality management system of the automobile production line includes the following steps:

[0061]S1: Raspberry Pi 1 reads the sensing data received by PLC2, the sensing data includes product number and measurement process parameters;

[0062] S2: Raspberry Pi 1 stores the sensing da...

Embodiment 2

[0089] The spindle of the car is pressed into the production line, and the process includes: 1. Loading the spindle; 2. Pressing in the first layer of rotor core; 3. Pressing in the second layer of iron core; 4. Pressing in the third layer of iron core; 5. Complete the process; in the above process, the pressure value and position parameters need to be recorded, the corresponding pressure sensor 3 and position sensor 3 connected to PLC2 receive the sensing data, and the Raspberry Pi 1 reads the corresponding sensing data received by PLC2, And stored in the MySql database installed on the Raspberry Pi 1, read the corresponding data in real time through the Raspberry Pi 1, and calculate the X-bar-R control line through the Raspberry Pi 1, according to the 8 guidelines of GB / T4091-2001 Judging the quality trend and calculating the CPK value, the Raspberry Pi 1 judges whether there is any abnormality in the process of pressing the automobile spindle into the production line accordi...

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Abstract

The invention relates to the technical field of automobile production line quality management and relates to an automobile production line quality management system and method. A local database is installed through the Raspberry Pi; communication connection with a PLC is realized through the Raspberry Pi; the raspberry pi stores sensing data acquired by the PLC into a database and calculates an X-bar-R scatter trend and a CPK numerical value; and therefore, whether the manufacture procedure of an automobile production line is abnormal is automatically judged, and the anomaly of the productionline can be warned against. The raspberry Pi is adopted as an intermediate cache between the PLC and the server, loss due to the fact that data do not win communication congestion can be avoided; andproduct data tracing and yield tracking are achieved through the server, so that quality trend prediction can be achieved even for a production line with complex production.

Description

technical field [0001] The invention relates to the technical field of quality management of automobile production lines, in particular to a system and method for quality management of automobile production lines. Background technique [0002] With the improvement of technical quality requirements, the automobile industry has more and more strict requirements on the quality control of product production process parameters. In the existing auto parts production line, each equipment is controlled by PLC to automatically or semi-automatically complete the processing of auto parts. However, in the existing technology, PLC cannot realize database management, and process and process reference cannot be recorded in large quantities; PLC is difficult to realize the quality parameter analysis of parameters, such as X-R control chart, CPK histogram, and cannot realize the prediction of quality trend, GB / T4091 -In 2001, the 8 criteria for judging abnormal quality trends were difficult ...

Claims

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Application Information

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IPC IPC(8): G05B19/418
CPCG05B19/41875G05B2219/31439Y02P90/02
Inventor 陈晔刘仕强黄玉震张祥林郑钰丰
Owner FUZHOU TAIQUAN IND CO LTD
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