1. Causes and Solutions of Helical Patterns on the Surface of Workpieces
The workpiece thimble is loose: check whether the chuck and the thimble are loose
The table rail is not lubricated enough: adjust or replace the lubricating oil
2. Reasons and solutions for the poor roundness of workpieces when the workpiece is ground by plunge
Center hole is burred, or not round, or loose, or not deep enough: Check center hole
The workpiece is pushed too tightly: adjust the tailstock spring
Insufficient coolant flow: adjust coolant
3. Causes and Solutions of Poor Surface Roughness
Inappropriate grinding wheel hardness: choose the appropriate grinding wheel hardness
The coolant is dirty: strengthen the filter or replace the coolant
The cutting speed of the diamond dresser is too fast: reduce the cutting speed
The diamond dresser is not sharp enough: turn the angle of the dresser or replace it
The feed is too large: decrease the feed
The lateral movement speed is too fast: reduce the lateral movement speed
4. Reasons and solutions for the different diameters of workpieces adjacent to each other
Workpiece center loose: detect center hole
The workpiece center is not on the center line: check the center hole
5. Causes and Solutions of Vibration on the Surface of Workpieces
The feed is too large: decrease the feed
The workpiece is too long and unsupported: use a suitable support device
Machine tool vibration: Check the vibration of the machine tool and the surrounding environment
Hard grinding wheel: choose a soft grinding wheel to increase the workpiece speed; speed up the correction speed, reduce the grinding wheel speed, and increase the coolant flow
6. There are burns and cracks on the surface of the workpiece
The grinding wheel is too hard: choose a softer grinding wheel or use an appropriate method to soften the grinding wheel
The wheel structure is too tight: try a wheel with a more open structure
Grinding feed too high: separate rough and fine grinding
Insufficient coolant flow or incorrect nozzle direction: adjust the cooling method
The grinding wheel is not repaired in place: re-dress the grinding wheel according to the correct plan
7. Causes and Solutions of Surface Waviness of Workpieces
Vibration from: belts, hydraulic systems, motors, inspection of machine tools
The grinding wheel is not balanced: balance and dress the grinding wheel
The grinding wheel encounters oil pollution: replace the grinding wheel
