1. Classified by process use
Metal cutting CNC machine tools include CNC lathes, CNC drilling machines, CNC milling machines, CNC grinding machines, CNC boring machines, and machining centers. Some machine tools are suitable for single-piece, small-batch, multi-variety and part processing, with good processing dimensional consistency, high productivity and automation. High-equipment flexible metal forming CNC machine tools; such machine tools include CNC bending machines, CNC combination punching machines, CNC pipe bending machines, CNC rotary head presses and other CNC special processing machine tools; such machine tools include CNC wire (electrode) cutting machine tools, CNC electric Spark processing machine tools, CNC flame cutting machines, CNC laser cutting machine tools, special combination machine tools and other types of CNC equipment; non-processing equipment adopts CNC technology automatic assembly machines, multi-coordinate measuring machines, automatic plotters and industrial robots, etc.
2. Classified according to the way of exercise
Point-position control; point-position control features of CNC machine tools The moving parts of the machine tool can only realize the precise movement and positioning process from one position to another for linear control of CNC drilling machines, digital coordinate boring machines, CNC welding machines and CNC pipe bending machines; Point-to-point linear control features The moving parts of the machine tool only need to realize the precise movement and positioning of the coordinate position and the other position, and can also realize the linear feed motion parallel to the coordinate axis or control the two coordinate axes to realize the oblique feed motion contour control; contour control CNC machine tool features machine tool The moving parts can realize the linkage control of two coordinate axes at the same time. It is only required to control the coordinate position of the starting point and end point of the moving parts of the machine tool, and it is required to control the speed and displacement of each point in the whole machining process, that is, it is required to control the motion trajectory. The parts are processed into straight lines, curves or spatial surfaces in the plane .
3. Classification by control method
Open-loop control; that is, semi-closed-loop control with position feedback device control; refers to open-loop control. The servo motor shaft is equipped with an angular displacement detection device, which indirectly detects the displacement of moving parts by detecting the rotation angle of the servo motor. Feedback to the comparator of the numerical control device and input instructions Comparison uses the difference to control the closed-loop control of the moving parts; the corresponding position of the final moving parts of the machine tool is directly measured by a linear or rotary detection device. The displacement or angular displacement value is fed back to the numerical control device. The comparator is compared with the input command displacement. The components move strictly according to the actual required displacement.
4. Classification according to the performance of numerically controlled machine tools
Economical CNC machine tools; high-end CNC machine tools; high-end CNC machine tools;
5. Classification according to the composition of the numerical control device used
Hard-wire CNC system; Soft-wire CNC system;
