CNC punch
(1) Classification and application. From the point of view of CNC system control, number of linkage axes and servo system, the
CNC systems are divided into several categories. (1) From the point of view of the control function of the numerical control system, the numerical control system is divided into:
Point control CNC system, line control CNC system and contour control CNC system. Point control CNC system is suitable for: CNC drilling machine, CNC boring machine, CNC punching machine, CNC measuring machine; Linear control CNC system is suitable for: CNC boring and milling machine, CNC combined machine tool, etc. Contour control CNC system is suitable for: for processing curves and surfaces CNC lathes, CNC milling machines, machining centers and other machine tools. Modern CNC machine tools are basically equipped with this kind of CNC system.
(2) From the point of view of the number of linkage axes, the CNC system is divided into: suitable for processing plane curved parts; suitable for processing space curved parts with monotonic characteristics along the direction of the machine tool spindle. It is suitable for machining space surface parts with complex shape features. It is suitable for machining space surface parts with arbitrary complex shape features.
(3) From the perspective of the servo system, the CNC system is divided into:
Open-loop numerical control system refers to a numerical control system without a position measuring device in the feed servo subsystem. It is widely used in occasions with low precision, low speed requirements and small driving torque. It is also often called an economical CNC system
There is a closed loop servo system, which means there is a closed loop position measurement system! In addition, the position measuring device is mounted on the mechanical actuator, which directly detects the actual position of the moving part. Mainly used for boring and milling machines, ultra-precision lathes, ultra-precision grinders and large CNC machine tools with high precision requirements. Also known as high-end CNC system.
Semi-closed-loop numerical control system: refers to the numerical control system that the feed servo subsystem has a position measuring device, and the position measuring device is installed on the driving device (commonly used servo motor) or lead screw, and is detected by sampling the rotation angle, rather than directly detecting the moving parts. actual location. Semi-closed-loop CNC machine tools have been widely used in modern CNC machine tools because of their simple structure, convenient debugging and high precision. Generally also known as mid-range CNC system.
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