The Structure Components Of CNC Machine
1. basic components
The basic component is the foundation structure of the CNC machine. It is mainly composed of three parts: the machine body, the worktable and the column. The three parts not only bear the static load of the CNC machine, but also bear the dynamic load generated during cutting. Therefore, the basic components of the CNC machine must be sufficiently rigid, and these three parts are usually cast.
2. main shaft parts
The spindle components are composed of spindle box, spindle motor, spindle and spindle bearing. The spindle is the power output component of CNC machine, its starting, stopping, changing and changing direction are controlled by numerical control system. The rotation accuracy and positioning accuracy of the spindle are the important factors that affect the machining accuracy of the CNC machine.
3. numerical control system
The NC system of the CNC machine is composed of CNC, programmable controller, servo drive system and panel operating system. It is the control center of executing sequence control action and processing process. The CNC device is a position control system. Its control process is data processing and interpolation operation based on the input information. The ideal motion trajectory information is obtained, and then output to the execution parts to process the required work piece.
4. automatic knife exchange system
The tool changing system is mainly composed of tool magazine, manipulator and other components. When the tool needs to be replaced, the numerical control system sends out instructions, the manipulator is removed from the tool library and loaded into the spindle hole, and then the tool on the spindle is sent back to the tool bank to complete the whole change of the knife.
5. auxiliary device
It includes lubrication, cooling, chip removal, protection, cross pressure, pneumatic and testing system. Although these devices are not directly involved in cutting motion, they are indispensable parts of the CNC machine. It plays an important role in machining efficiency, machining accuracy and reliability.
Key words:5 axis CNC machining
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