CNC machine tool spindle component requirements

Stiffness

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

2. Rotation accuracy

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

The quantity and level directly affect the geometric accuracy and surface quality of the processed parts.

3. Impact resistance

CNC machine toolsThe impact resistance of spindle parts refers to the ability of spindle parts to resist vibration and maintain balanced operation during CNC machining. Thermal stability of spindle components mainly refers to the component's ability to resist changes in shape and position due to heat. CNC machine tools will generate heat due to friction, oil contamination and other reasons during operation, resulting in temperature imbalance of the spindle components, thus deforming the shape and position of the spindle components, thus affecting the machining accuracy.

The spindle structure of CNC machine tools 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 capabilities.