Based on the physical characteristics of the hollow camshaft, the straightening process and parameters are redesigned and optimized, the straightening downward pressure is re-calculated and optimized, and the straightening fulcrum is expanded to increase the downward pressure to solve the difficulty of rebound. The theoretical basis of hollow camshaft straightening is optimized by fitting the straightening curve, optimizing the weight of correction coefficient and controlling the number of straightening times through a large number of real straightening data. At the same time, the process control is made to the previous process, controlling the straightening quality and waste rate of the hollow camshaft, which achieves lean manufacturing and improve the quality control level of the hollow camshaft production process.

Hollow camshaft  /  Alignment  /  Elastoplastic Deformation  /  Fitting curve  /  Downward pressure