In modern mechanical manufacturing, grinding processing as an important precision processing method has an irreplaceable position in the manufacturing of high-precision parts. Grinding processing can not only achieve micron-level and even sub-micron-level size accuracy but also significantly improve the surface quality of the parts. However, due to the complexity of the grinding process, how to effectively control size accuracy has become a major difficulty in grinding technology. This article will discuss the methods of size accuracy control in grinding processing from aspects such as process parameters, equipment selection, abrasive wheel management, and measurement and feedback.



Firstly, the reasonable selection and optimization of grinding process parameters are the foundation for ensuring size accuracy. During the grinding process, parameters such as the linear speed of the abrasive wheel, the feed rate of the workpiece, and the grinding depth will directly affect the processing effect. Generally speaking, increasing the speed of the abrasive wheel helps to reduce surface roughness and improve processing stability, but excessive speed may cause workpiece burning or accelerated wear of the abrasive wheel. Therefore, it is necessary to comprehensively adjust the parameters according to the material properties, workpiece shape, and processing requirements to achieve an efficient and stable grinding process.



Secondly, the selection of high-precision and high-stability grinding equipment is the premise for size control. Modern CNC grinding machines have characteristics of high rigidity, low thermal deformation, and high positioning accuracy, which can maintain stable processing accuracy during long-term processing. In addition, equipment maintenance is also crucial; regular checks of spindle accuracy, guide rail gaps, and the working status of the cooling system can effectively avoid size deviations caused by equipment aging or failure.



Thirdly, the selection and management of abrasive wheels have a decisive impact on size accuracy control. The grain size, hardness, binder type, and dressing method of abrasive wheels will all affect the grinding effect. For example, fine grain abrasive wheels are suitable for precision processing, while soft abrasive wheels are suitable for grinding hard materials to prevent burning. At the same time, abrasive wheels will gradually wear during use and need to be regularly dressed online or offline to restore their geometric shape and cutting performance.



In addition, precise measurement systems and real-time feedback mechanisms are key links for closed-loop control. In modern grinding processing, online measurement technologies such as laser diameter meters and inductive micrometers are increasingly used to monitor the dimensions of workpieces in real time, and the measurement data is fed back to the control system to automatically adjust the grinding parameters, thereby achieving dynamic compensation and further improving the consistency and accuracy of processing.



In summary, the control of size accuracy in grinding processing is a systematic project, involving many aspects such as the optimization of process parameters, equipment performance guarantee, scientific management of abrasive wheels, and precise measurement and feedback. Only by doing fine management in all links can we ensure that the size accuracy of the final parts meets the design requirements, thereby improving product quality and market competitiveness.