(1) The precision parts processing manufacturer tells you that the trajectory method is also called the tool tip trajectory method, and the method that relies on the motion trajectory of the tool tip to obtain shape accuracy is called the trajectory method. That is, let the tool move regularly with respect to the workpiece, and obtain the required surface geometry with its tool tip trajectory. The movement trajectory of the tool tip depends on the relative forming movement of the tool and the workpiece, so the shape accuracy obtained depends on the accuracy of the forming movement. CNC lathes, CNC milling machines, ordinary turning, milling, planing and grinding are all trajectory methods.
(2) Forming method The method of using forming tools to process the workpiece is called forming method. That is, the forming tool is used to replace the ordinary tool, and the cutting edge of the forming tool is the shape of the workpiece. The forming tool replaces a forming movement. Precision parts processing manufacturers tell you that the forming method can simplify the machine tool or cutting motion and increase productivity. The shape accuracy obtained by the forming method depends on the shape accuracy of the forming tool and the accuracy of other forming movements.
(3) Profiling method The method in which the tool is fed by the profiling device to process the workpiece is called the profiling method. The shape accuracy obtained by the profiling method depends on the accuracy of the profiling device and the accuracy of other forming movements. The profiling car, profiling milling, etc. are all profiling processing.
(4) Generative method (Fan Cheng method) The method in which the workpiece and the tool are used for the generative cutting motion is called the generative method. Precision parts processing manufacturers tell you that the machined surface obtained by the generative method is the envelope surface formed during the generative movement of the cutting edge and the workpiece, and the shape of the cutting edge must be the conjugate curve of the machined surface. The accuracy it obtains depends on the shape of the cutting edge and the accuracy of the generative motion.