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Automatic Scheme&Application Research with Coordinate Measuring Machine in Key Parts of Common Rail System

Author: WuBoWei
Tutor: LiuLi; XuLuoPing
School: Shanghai Jiaotong University
Course: Mechanical Engineering
Keywords: CRS injector CMM PCM measuring scheme MSA
CLC: TH72
Type: Master's thesis
Year: 2012
Downloads: 23
Quote: 0
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Abstract


In diesel common-rail system (short as CRS), injector, high pressure pump andrail are the key parts in the product quality control. set injector as example, which hassmall size, complicated internal structure, measuring location of irregular and precisionhigher characteristic, actually the testing method with random, low efficiency and so on.Setting up an automatic scheme, exclude man-made interference, improve testingefficiency, to ensure process accurate and reliable, is a very practical value.This thesis analyze technology of coordinate measuring machine(short as CMM) inautomobile industry, using CMM to create a scheme. differing from traditional, in theproduct design stage, directly use CAD model complete offline programming automaticprocedures, including fixture design, integrated probes group, elements and strategy ofediting, system parameters optimization and evaluation of output and so on; in order tooptimize scheme and improve on-line measuring efficiency, in project adding fixtureposition can only be judged, clamping type picture error-proofing alerts and testing timestatistics, and a plurality of structural similarity to injector testing procedure with PCMparametric integration to a program technology in-depth study.In addition to measurement method study of CRS key parts. analyze measurementsystem and testing results,verify that measurement system to meet quality control andaccuracy. At present this scheme is widely used in injector, high pressure pump and railand other key parts, in quality control and cost reduction shows good effect.

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CLC: > Industrial Technology > Machinery and Instrument Industry > Instruments, meters > Coordinates,computer tools,the counter
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