Once the limit speed of the machine tool spindle is exceeded, some small problems that originally existed in the machine tool sometimes become extremely serious problems. When using a vertical lathe for metal cutting, the spindle speed has a significant impact on the aluminum cnc turning process. In the low speed or common speed range of the spindle, it has little impact on its processing quality.
Between cutting speed and processing quality, the selection of various cutting parameters will follow the rules revealed by cutting theory. Processing beyond the limit value or at a higher spindle speed will cause an increase in cutting temperature, greater centrifugal force on the Turn-mill Machining Non-Standard Equipment Spindle Accessories, and may also cause vibration of the machine tool. The higher the spindle speed, the greater the force (centrifugal force) generated from the rotating shaft that pulls the parts outward. Especially in finishing, the centrifugal force has a greater impact on the spindle bearings.
The processing cutting speed of the CNC vertical lathe is fixed. To ensure the accuracy of the machined parts and control the machine tool spindle speed, a constant cutting speed can be achieved through the command G96 in the control system. This program executes the constant speed command by controlling the speed of a DC motor or a variable frequency three-phase motor. As the processing diameter decreases, theoretically, the cutting speed can increase infinitely. However, at high speeds, the radial force generated by the workpiece is too large, which will cause a sharp increase in the stress on the fixture, resulting in accidents such as damage to the fixture and the vertical lathe body. .
When processing parts, when the circumferential cutting speed is constant, the surface roughness of the workpiece after copper cnc turning can be kept consistent, and the service life of the tool can also be improved. After setting a constant cutting speed, the spindle speed changes at different diameters of the workpiece. When cutting large diameters of the workpiece, the spindle speed is lower. At the small diameter of the cutting workpiece, the spindle speed is higher. If the spindle speed is too high, the workpiece will be in danger of flying out, so the limit speed of the spindle needs to be limited.