Comprehensive analysis of machining accuracy and quality control of double disc grinding machine

The machining accuracy and quality control of double disc grinding machine is the key link to ensure the quality of the workpiece, which involves a number of factors and technical means. The following is a detailed discussion of double disc grinding machine machining accuracy and quality control:

First, the influencing factors of machining accuracy

1. The performance of the machine tool itself: the geometric accuracy, stiffness, thermal deformation, motion stability and vibration resistance of the grinding machine will directly affect its machining accuracy. For example, the radial runout and axial runout of the spindle, table and other moving parts of the moving straightness, etc., are important indicators of machine tool accuracy. Small changes in these factors may lead to a significant decline in the machining accuracy of the workpiece.

2. The state of the grinding wheel: grinding wheel as a key tool in the grinding process, its state directly affects the machining accuracy and surface quality. Uneven wear of the grinding wheel will lead to uneven surface and reduce machining accuracy. Therefore, regular inspection and replacement of the grinding wheel to ensure that the surface of the grinding wheel is flat and the grit is concentrated is the key to improving machining accuracy.

3. Setting of grinding parameters: The feed speed, grinding wheel speed, grinding pressure and other parameters during the grinding process will directly affect the machining accuracy. Reasonable parameter settings can ensure the stability of the grinding process, reduce heat accumulation and thermal deformation, so as to obtain high-precision machining surface.

4. Clamping and positioning of the workpiece: The clamping and positioning of the workpiece in the grinding process will also affect the machining accuracy. If the clamping is not stable or positioning is not allowed, it will cause the workpiece to shift or vibrate during the grinding process, thus reducing the machining accuracy.

Second, the method of quality control

1. Optimize the performance of the machine tool: improve the machining accuracy of the machine tool by improving its geometric accuracy, rigidity, thermal stability and motion stability and other measures. For example, the use of high-precision transmission mechanism, strengthen the rigidity of the machine tool support, optimize the cooling system and so on.

2. Strict grinding wheel management: establish a perfect grinding wheel management system, including the selection, installation, dressing and replacement of grinding wheels. Ensure that the grinding wheel is in good condition to improve machining accuracy and surface quality.

3. Reasonable setting of grinding parameters: According to the workpiece material, shape and processing requirements and other factors, set the grinding parameters reasonably. Find the best combination of grinding parameters through testing and optimization adjustment to achieve high-precision machining.

4. Strengthen workpiece clamping and positioning: adopt suitable clamping and positioning methods to ensure that the workpiece is stable and reliable in the grinding process. At the same time, regularly check and maintain the clamping device and positioning mechanism to ensure its accuracy and stability.

5. Implement online monitoring and feedback: adopt online monitoring equipment to monitor the parameters and workpiece status in the machining process in real time, so as to find and correct the problems in time. At the same time, the monitoring data will be fed back to the control system to realize the automatic adjustment and optimization of the machining process.

In summary, the machining accuracy and quality control of double face grinding machine is a complex and detailed process, which needs to comprehensively consider the performance of the machine tool, the state of the grinding wheel, grinding parameter settings and workpiece clamping and positioning and other factors. By continuously optimizing and adjusting these factors, high precision machining and stable quality control can be achieved.