| There are a lot of measurement problems of arbor parts in the manufacture industry of automobile , the electronic gauge , which is measuring axial parameter of arbor parts on-line,is initiated and developed for meeting the demand . This gauge can not only measure many of axial parameters of crackshaft in automobile engine,but also measure other arbor parts.This gauge for measuring axial parameter uses optical grating displacement measuring system to measure axial parameters of crackshaft,uses inductance type transducer as measuring head to make position.The measuring datas from optical grating are dealed with by subdivision,then the datas are recorded into computer system by RS485 serial bus.The subdivision method in this paper is based upon the methord of looking-up table by hardware.This methord has high speed,,and the subdivision multiple is easy to quite high.The measuring datas from inductance type transducer are dealed with by magnigy,demodulation and rejector,then the datas are recorded into comprter system by acquisition unit.The software for managing and controling is designed to deal with measuring datas and display result . This measuring instrument has the characteristics as follows:simple structure;high precision;good stability;easy maintain and modify;strong anti-jamming;high efficiency and low cost,ect.In this paper , confirming measuring proposal ; designing mechanical structure ; analyzing measuring errors ; measuring principle ; designing hardware system and software system ; debuging system and analyzing measuring datas have been described in detail.After the mechanical structure,electronic system and software system are debugged as a whole,give a long time to the gauge keeping running and testing.From the measuring datas,we know that the gauge is reliable,stable,high precision,good repetitiveness and high efficiency,the gauge can satisfy the needs of high efficiency and precision on the product line for measuring on-line. |
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