the GUI working model of ANSYS cann’t establish model of complex tooth profile exatly

so the APDL working model of ANSYS is used. Based on the generating principle

conjugate curves of processed gear cut by the arc situated at pre-grinding hob are derived in term of coordinate conversion and separated. According to the method for plane curves synthesis

conjugate curves cut by the different parts of the hob are composed numerically

and the datum of complex tooth profile are calculated exactly.The datum are called by APDL in ANSYS

then FEM geometrical model of complex tooth profile machined by pre-grinding hob are established accurately.Combined by strong numeric analysis and treatment of MATLAB and the facility and openness of APDL

compositive programming with MATLAB and APDL is advanced based on full-text data files.