(1) Trajectory method trajectory method is a machining method that depends on the relative motion trajectory of tools and parts to obtain the required surface geometry and its accuracy. If the cylinder surface is processed on the lathe, the machine tool is completed by the uniform rotating motion of the workpiece and the linear motion of the turning moon; For example, the curved surface processed by profiling is completed by the rotation of the workpiece and the curve movement formed by the turning tool under the action of profiling.
(2) Forming method forming method is a processing method to obtain the surface shape and accuracy of the workpiece by using the geometry and cutting motion of the cutting edge of the forming tool. Machine tools, such as machining rotary surfaces with forming turning tools, turning helical surfaces with thread turning tools, etc. The surface shape accuracy obtained by these machining methods of machine tools depends on the shape accuracy of the cutting edge of forming tools.
(3) Generating method a machining method in which a tool makes a generating cutting motion with a certain speed ratio relationship with the workpiece to obtain the machined surface shape and accuracy of the part. The cutting edge of a machine tool is the conjugate curve of the contour line of the machined surface.1 two pieces are added_ The surface is the envelope surface formed by the cutting edge in the generative motion. The machining accuracy of machine tool generating method depends on the speed ratio accuracy of generating motion and the shape accuracy of cutting edge. Machine tools such as gear hobbing, gear shaping and other gear processing methods are generative methods.
