A design methodology for the super speed
parallel machine tool for arbitrary curved surface cutting has been
established in this paper based on the result of previous research,in which the workspace of the machine tool shall be a continuous,monotonously connected turning(rotary)space with a moving platform of β max =30.For practical resons,the shape of the workspace is constrained to a cylinder with a L/D ratio of 0.7.The converse method is used to determine the
parameters in the design of the
parallel machine tool,which allows the use of maximum range of machine varibales (e.g.swinging angle of spherical bearng)within their limits.The calculated curves can be used in future parallel machine tool design to rapidly determine the major design parameters and machine dimensions,and to provide guidelines in proposal comparison and selction.As a result of this study,it is concluded that the key element for a practical parallel machine tool design is to make sure that the maximum swinging angle of spherical bearing is greater then 40 .