Operation steps of centerless grinder

The occurrence of inaccurate feed in the operation of centerless grinders is due to the fact that most traditional ordinary centerless grinders in China now use ordinary screw rods as feed transmission. Due to the gap between the screw rods, direct feed will definitely not match the actual feed value. And high

The precision centerless grinder has much smaller errors due to the use of ball screws. This requires us to go back three times during the cutting process, and then go back three more times to eliminate the error caused by the gap. If the cutting is still inaccurate, we need to proceed to the next step.

1) Check if the screw brake handwheel is locked. If it cannot be locked, it is possible that the two pins holding the screw brake handwheel tap inside have fallen off. It is necessary to check and reinstall. If the slide plate is not inserted correctly, check whether the left or right side of the tool holder is pressed against the fallen workpiece. This problem sometimes occurs and needs to be checked.

2) For the centerless grinder model, as the feed is made from the bottom right corner, it is necessary to check whether the fixing screw of the feed handwheel and the upper retraction screw on the feed screw are loose or have excessive clearance. Rotate the feed handwheel back and forth multiple times to feel whether the clearance between the handwheels is too large, or whether the feed handwheel is too tight when rotating.

3) Minor adjustment of the position deviation or looseness of the feed sleeve can cause excessive clearance between the sliding plate friction spiral gear and the adjusting screw. Tightening the tight nut can cause inflexibility in rotation, and in general, loosening the nut can also cause inaccurate cutting. 4) The transmission screw in the differential disc of the handwheel adjustment and screw rod has fixed screws, and it should be confirmed that they are not loose. The fine adjustment screw and screw rod have Peilin bearings, and it should be confirmed that there is no wear or excessive clearance.

These issues are relatively easy to handle and require careful inspection or disassembly, cleaning, and reinstallation for troubleshooting. For lightly worn parts, they can be tightened appropriately, while parts with severe wear need to be replaced. Using high-quality parts as much as possible can improve the accuracy of grinding machine feed.