What Should You Pay Attention To When Using A Compound Grinder?

As a versatile, high-precision machining device, a compound grinder's advantage lies in its ability to efficiently process complex parts by combining various grinding methods and metalworking techniques. However, proper operation and maintenance are crucial, directly impacting both machining quality and equipment life. The following describes key points to note when using a compound grinder: operational safety, grinding wheel and grinding rod selection, workpiece clamping, machining parameters, and operating procedures.

Operational Safety and Protection

Operators must always wear protective glasses, maintain concentration, and dress neatly to ensure safe machining. During machining, operators should avoid distractions, conversation, or other distracting activities to ensure full focus. Furthermore, strictly follow operating procedures when starting and stopping the machine, and when changing the grinding wheel or grinding rod to prevent accidents and ensure personal and equipment safety.

Proper Selection and Handling of Grinding Wheels and Grinding Rods

When performing external cylindrical grinding, it is crucial to select a grinding wheel that suits the workpiece's requirements. For roughing, a grinding wheel with a grit of 16-60# is generally used, while a finer-grit grinding wheel with a grit of 100# or higher is required for finishing. New grinding wheels must be trimmed with a gold pen to a cross-section no less than 0.2mm to ensure stable turning. If ripples or unusual noises occur during machining, immediately stop the machine, inspect the grinding wheel, and perform static balancing if necessary. For internal machining, use a 200-230# grinding wheel for roughing and a 100-600# grinding wheel for finishing. For surfaces with insufficient surface finish, a resin grinding wheel can be used for polishing.

Proper Workpiece Clamping

Before CNC machining, use a file and sandpaper to deburr the workpiece and ensure good contact between the fixture and the workpiece. Check concentricity by manually rotating the wheel and, if necessary, adjust it with a dial indicator to ensure concentricity within 0.005mm. Tight clamping is essential for ensuring machining accuracy and preventing workpiece deflection. It is also a crucial measure to avoid grinding vibration and abnormal turning.

Properly set machining parameters and process flow

Before machining, allow the grinding wheel to idle for 30 seconds to stabilize its operation. When roughing with a large allowance, begin with a feed of 0.03-0.05mm. Allow the workpiece to cool before proceeding to finish machining, controlling the feed to 0.002-0.01mm. During finishing machining, leave a 0.03-0.05mm allowance to ensure workpiece quality. Following a reasonable process flow and parameter settings can extend grinding wheel life and improve workpiece surface quality and dimensional accuracy.

Operating Standards and Environmental Maintenance

Operators must strictly adhere to equipment operating regulations and avoid distractions or conversations with others while operating. After machining, promptly clean the machine and work area, removing chips and residual oil. Keep the machine clean and dry to prevent rust and damage to mechanical components. Regularly inspect and maintain key components such as guideways and grinding wheels to ensure long-term stable operation.

Summary

The efficient performance of a CNC compound grinding machine depends on the operator's skill and proper operation. Good equipment maintenance and safety awareness are also essential. Proper selection of grinding tools, strict adherence to clamping and machining procedures, and ensuring safe operation are the foundations for achieving high-quality grinding. Only by fully grasping these precautions can we give full play to the processing advantages of the compound grinding machine, improve the precision and surface quality of the product, and achieve efficient and stable production.