Precautions for CNC machining mainly include the following aspects:
Equipment inspection and preheating: Before machining, the various components of the CNC machine should be thoroughly inspected to ensure that the fasteners are not loose, the key parts such as bearings and motors are operating normally, and that there are no foreign objects interfering with the operation of the equipment. For CNC machines that require preheating, they should be preheated according to the manufacturer's instruction manual to ensure that the equipment operates at the optimal operating temperature.
Program testing and simulation: Use simulation software to fully test the written CNC program to avoid material waste and equipment damage caused by programming errors. Check the actual performance of the CNC program through dry running (running without cutting materials) to ensure that all mechanical actions meet expectations.
Workpiece clamping and positioning: Select appropriate fixtures and clamping devices to ensure that the workpiece is firmly fixed and accurately positioned during machining. Use precise positioning methods, such as tool setting and fixture positioning systems, to ensure machining accuracy.
Tool selection and use: Select appropriate tools according to the material type, hardness and processing requirements of the workpiece, and regularly check the tool wear and replace severely worn tools in time.
Processing parameter optimization: Adjust processing parameters such as cutting speed, feed rate and cutting depth according to the workpiece material, tool type and machine tool characteristics to improve processing efficiency and surface quality. At the same time, monitor the vibration and temperature during the processing process, and adjust the parameters in time to reduce vibration and control temperature rise.
Environment and safety: Keep the working environment around the CNC machine clean and orderly, and ensure good ventilation. Strictly abide by safety operating procedures and wear appropriate personal protective equipment, such as safety glasses, earplugs, gloves, etc..
Quality control and maintenance: Regularly perform maintenance and calibration of CNC machines to ensure the high-precision processing capabilities of the equipment. Perform strict quality inspections on the finished workpieces to ensure that the products meet technical specifications.
Other precautions:
When performing high-precision workpiece forming processing, use a micrometer to detect the tool on the spindle to control its static runout within 3µm.
Before processing, each tool and each procedure must be checked and verified according to the drawing process, procedure and tool adjustment card.
