The most of normal cylindrical worm tooth is machined by using straight lines forming tool.As the different installation positions of the tool
the tooth profile shape of the resulting helicoidal surface in the different sections is also different.By using the 3D solid modeling software of Inventor
the process of the straight lines lathe tool cutting worm is simulated
according to the different of installation position of the tool
the different type of cylindrical worm is gotten.The parametric design of worm is realized
the duplication labor of designer is reduced and the efficiency is improved.