Development of a software for automated design of machining fixtures using kinematic analysis and synthesis

摘要: This paper presents the methodology for automatic configuration of machining fixture for prismatic and non prismatic parts based on screw theory and kinematic analysis. The necessary and sufficient conditions for deterministic positions of the workpiece in 3-2-1 location is first identified and then used to synthesize the locator scheme. The methodology takes into account forces and moments during all time and ensure the clamping stability and positive reaction forces on locators. The mixed integer linear programming techniques are used to formulate the deterministic positioning. The number and position synthesis of the clamps is then made by mathematical formulation of the fixture reasoning forces. With input as 3-D drawing of the workpiece, the output is position of locators and clamps with respect to work origin.