At present, most of the traditional centerless grinders in my country use ordinary wire rods as the internal driving force, which is the main reason for the inaccuracy of the grinders. Due to the gap between the two fuel rods, the direct feed will definitely not match the actual feed value. High-precision centerless grinders have relatively small errors due to the use of ball rods.
The usual method of operation is to return three turns during the feed, and then enter three turns to eliminate the error caused by the gap. If it is still not accurate, we need to perform other actions. Have a brief understanding of how to deal with this matter.
1. Check whether the screw brake handwheel is locked. If you can't lock it, the two pins that you held against the screw brake hand wheel tap fell off, grab the screw brake hand wheel faucet and check and reinstall. If the lower slide is not accurate, check whether the left or right side of the tool holder touches the falling workpiece. This problem sometimes occurs and needs to be checked.
2. For the centerless grinder model, since the tool is fed from the lower right corner, check whether the fixing screw of the feed handwheel and the anti-retraction screw on the feed screw are loose or whether the gap is too large. Turning back and forth feels that the gap between the handwheel is too large, or whether the handwheel is too tight when rotating.
3. The offset or looseness of the downward fine-tuning of the feed housing will cause the gap between the sliding friction helical gear and the adjustment screw to be too large. Or tightening the nut will make the rotation inflexible. Usually, the loose nut will also lead to inaccurate feed.
4. Both the handwheel fine-tuning and the screw differential drive screws have fixed screws. Make sure that there are no loose, fine-tuning screws and screw welt bearings to ensure that there is no wear or excessive clearance.
For slight wear, it can be tightened properly. The severely worn parts need to be replaced in time. Equipped with good quality parts as much as possible, which can improve the accuracy of the grinding machine's feed and reduce the maintenance rate of the machine.
