The Design for Portable Fixturlaser Shaft and Mathematical Model Study

A design of laser shaft alignment based on double LD-PSD is proposed in this paper. The mathematic model of shaft alignment is established and hardware circuit is designed. The laser shaft alignment equipment can carry out alignment measurement under various conditions. And it can resolve the effect of soft ground pin and temperture. Sampling machine testing indicates that the measurement precision, reliability are higher than similar products. It can meet the measure requirement of coaxiality in shafting.