This paper deals with the decision of pass schedule of roller in conventional simple spinning. It is important to control the deformation mode of blank by an excellent pass schedule of roller, lest the sheet metal should be wrinkling or fracturing. At first, the authors attempt to draw in sheet metal by four fundamental types of template, namely-linear shape template (revolved and inside shifted type) and circular shape template (outside and inside shifted type). From the experimental results of these types, an involute curve is proposed for the profile of template. According to the test result of the new involute template, it is evident that the height of spun cups can be controlled freely by the alteration of working conditions, and the limit drawing ratio is best improved. The authors obtain the drawing ratio of 2.5 when t₀/d=1.25.