The spindle parts of CNC machine tool should not only be satisfied with the higher requirements of finish machining, but also with the cutting ability when rough machining, and at the same time, the spindle parts of CNC machine tools should have higher dynamic and static stiffness and the ability to resist thermal deformation. Let us take a look at the requirements of CNC machine tool for spindle components together.
1. High enough rigidity. When CNC machine tools are in operation, they usually choose high-speed cutting, which requires high rigidity of spindle parts, otherwise, the spindle will produce large elastic deformation under the effect of external force and cause oscillation, which will affect the accuracy and surface roughness of processed parts.
2. Higher reversal accuracy. CNC machine tool spindle components of the same rotation accuracy is in the no-load low speed, in the front end of the spindle device workpiece, fixture or tool positioning surface, measured with a micrometer radial runout and axial runout. Its high or low directly affect the geometric accuracy and surface quality of the parts being processed. So. CNC machine tool spindle components have a high reversal accuracy.
3. Better anti-vibration. CNC machine tool spindle components of seismic refers to the CNC processing, spindle components to resist vibration and adhere to the balance of the ability to work. CNC machine tools if oscillation, will affect the surface quality of the workpiece, tool durability and spindle bearing life, but also generate noise and affect the operating environment.
4. Thermal stability. The thermal stability of the spindle components refers to the resistance of the spindle components due to heat and the ability to produce a change in shape. CNC machine tools in the operation will be due to friction, churning oil or other reasons to generate heat, resulting in spindle components temperature imbalance, so that the spindle components produce shape and orientation distortion, and then affect the processing accuracy.
5. Accuracy persistence long. The accuracy of the spindle parts persistence refers to the spindle long-term adhere to the original production accuracy of the ability. CNC machine tool equipment is expensive, in order to accelerate the recovery of CNC machine tool equipment funding, so that CNC machine tools adhere to a high rate of start-up. At the same time, and hope to extend the use of the period, reduce the number of repairs, which requires CNC machine tool spindle components have good precision persistence.
6. positioning reliable and accurate. CNC machine tool spindle components structure should ensure that there is a reliable radial positioning accuracy and axial positioning accuracy, to ensure that the workpiece or tool clamping secure, accurate positioning, reduce clamping errors and positioning errors on the impact of processing quality.
7. Other requirements. The need for automatic tool change of CNC machine tools, its spindle components are often also required to have automatic tool loading and unloading, blowing chips and spindle orientation quasi-stop and other functions, in order to satisfy the CNC machine tools to improve the level of automation and shorten the auxiliary moment requirements.
Post time: Mar-14-2023