Assembly Error Calculation with Consideration of Part Deformation

Traditional assembly do not consider mechanical deformation based on the rigid body hypothesis, while assembly precision has close relationship with part’ deformation in practice. In this paper, temperature, gravity and working load are taken into account to calculate the deflection occurred in assemblies. Both manufacturing error and deformation error are taken into consideration to establish deviation calculation model based on Jacobian-torsor model. A tailstock is taken as an example to verify the feasibility of the proposed method.