Super thin cutting wheels are mainly used for precision slotting and cutting, typically adopting a deep-cut, slow-feed grinding method. They feature large grinding depth, low feed rate, large contact area between wheel and workpiece, narrow kerf, high metal removal rate, high machining accuracy, good surface finish, and high material utilization.
The general rules are as follows:
1. Solid-type cutting wheels are thin (mostly below 0.5 mm), small in diameter (20–100 mm), fine in grit, high in dimensional and shape accuracy, and light in weight. They are generally used under high-speed conditions (5000–4000 rpm). This type of super thin cutting wheel is suitable for precision cutting.
2. Reinforced-type cutting wheels are relatively thicker (0.5–2 mm), larger in diameter (100–200 mm), coarser in grit, and lower in precision. They are generally used under lower speed and deeper cutting conditions (3000–10000 rpm). This type of super thin cutting wheel is more suitable for heavy-duty cutting.
3. Super thin cutting wheels usually use fine grit abrasives. The thinner the wheel, the finer the abrasive grain size, which improves surface finish but reduces cutting sharpness, so feed speed must be reduced accordingly.
4. Cutting depth is usually determined by the user based on the workpiece. Most operations use slow-feed, single-pass cutting. Because the wheel is thin and has three-sided contact with the workpiece, heat dissipation is poor, so strong cooling (flow rate and pressure) is required in the cutting zone.
5. If the super thin cutting wheel cannot cut effectively or causes chipping at the beginning of use, increase cutting speed or reduce feed rate. If it becomes dull after use, dress it using an appropriate grit oil stone to restore sharpness.
6. Surface quality and cutting performance mainly depend on abrasive grit size. Finer grit provides better surface finish. It is also affected by workpiece material, hardness, cutting parameters, machine conditions, and processing requirements.
7. The super thin cutting wheel is usually trued and dressed before leaving the factory and can be used directly. If further dressing is required, green silicon carbide or white corundum oil stones should be used, with grit 1–2 grades coarser than the wheel. For re-sharpening, use the same or slightly finer grit.
8. Machine conditions such as spindle runout, flange parallelism, and dynamic balance directly affect performance.
Usage Precautions:
1. Before installation, carefully inspect the wheel for cracks, deformation, or edge damage.
2. If the flange size or precision is not suitable, it may damage the wheel, so it must be corrected before use.
3. If the super thin cutting wheel has a marked rotation direction, it must match the machine rotation direction; otherwise, cutting performance will be reduced.
4. Using an incompatible wheel with the workpiece may cause abnormal wear, overheating, or poor sharpness.
5. If any abnormal condition occurs during operation, stop the wheel immediately.
6. When the super thin cutting wheel becomes dull, it must be dressed; otherwise, continued use may cause overheating, overload, or even breakage.
7. Never operate or touch the wheel during rotation with hands or body.
8. The super thin cutting wheel must only be used for cutting or slotting applications; using it for other operations may cause uneven stress and damage.
