CNC machine tool spindle parts requirements

stiffness

When the equipment is working, high-speed cutting is generally used, which requires very high stiffness of the spindle components, otherwise the spindle will produce large elastic deformation under the action of external forces and cause vibration, affecting the accuracy and surface roughness of the machined parts.

Second, rotation accuracy

The simultaneous accuracy of the spindle parts of CNC machine tools mainly refers to the radial runout and axial runout measured with a dial indicator at no-load low speed when the workpiece, fixture or tool surface is installed at the front end of the spindle

The level of quantity directly affects the geometric accuracy and surface quality of machined parts.

Three, impact resistance

The impact resistance of spindle parts of CNC machine tools refers to the ability of spindle parts to resist vibration and maintain balanced operation in CNC machining. The thermal stability of the spindle component mainly refers to the ability of the component to resist the shape and position changes caused by heat. CNC machine tools will generate heat during work due to friction, oil mixing and other reasons, resulting in the temperature imbalance of the spindle components, so that the shape and position of the spindle components are deformed, thus affecting the processing accuracy.

The spindle structure of the CNC machine tool should ensure reliable radial positioning accuracy and axial positioning engagement to ensure reliable tool installation and accurate positioning of the workpiece, and reduce the impact of installation errors and positioning errors on processing capacity.