Crankshaft multi-parameter co-measurement system and its applications

Crankshaft manufacturing is an important step of engine manufacturing processes. By using computer technology, the multi-parameter co-measuring system is able to. improve the automaton in the measuring process. and to measure multi-dimension. shapes and position by once positioning thus it will be surely wide applied in the crankshaft production. This paper will introduce two types of multi-parameter co-measuring system and their application in the production. The first is crankshaft bent deformation measuring machine system. This system is able to Measure radial flounce quantum of each main shaft neck and bent deformation. In order to describe the crankshaft bent deformation status and accurately to measure its deformation. we introduce the conception of deformation vector. Based on the deformation vector. the calibration vector is defined for the purpose of calibration by spinning. The second is the crankshaft pneumatic-electric measuring system. Based on spray type pneumatic probe receiving the dimension variation of the measured crankshaft. the movement variation be converted into pneumatic pressure variation and converted into modular voltage signal by pneumatic-electric converter. Being amplified, it becomes the digital signal by multi-route data picking card and finally complete the operations of display. save, print, alarm and statistic analysis. The pneumatic-electric measuring system is a kind of measuring system, which uses the pneumatic probe as the measurement. converts the pressure into electric signal and treats it afterwards. It makes up the shortage of the pneumatic measurement and electric induction measurement. It has the advantage of simplified mechanical measuring system, convenient data treatment and therefore it is an economic and practically used measuring method.