DESIGN SUPPORT DEVICE

PURPOSE:To easily plot a multistage structure where cylinder hole parts, thread hole parts, etc., are combined. CONSTITUTION:This design support device plots the multistage structure where plural stage parts are combined and is provided with a fundamental shape storage means 5 where fundamental shapes of hole parts, shaft parts, etc., constituting respective stage parts are stored, a detailed data storage means 6 where detailed data consisting of dimension data, detailed shapes, etc., corresponding to fundamental shapes is stored, an attribute data storage means 7 where attribute data consisting of surface roughness, screw information, etc., corresponding to fundamental shapes is stored, an input means 1 which reads out data stored in storage means 5 to 7, and a plotting information generating means 8 which generates plotting information based on data inputted by the input means 1.