Advantages of rolling knife
1. High efficiency-the surface can be processed to the required surface accuracy in a few seconds, and the power is 5-20 times that of grinding and 10-50 times that of turning.
2. High quality-one feed achieves the mirror accuracy of Ra0.05-0.1um; and the appearance is kneaded and hardened, and the wear resistance and fatigue strength are improved; the plastic deformation of the appearance is eliminated, and the scale accuracy can be relatively long-term stable .
3. Economy-no investment in capital, land occupation, power consumption, waste disposal, etc. for large-scale equipment is required; no investment by professional technicians is required.
4. Convenience-it can be clamped on any rotating and feeding equipment, and the mirror accuracy can be processed without professional training.
5. Environmental protection-no chips (to protect the environment), low energy consumption.
6. Safety-no cutting, rolling cutter has no cutting edge. Rolling heads are divided into rolling heads for general lathes and deep hole rolling heads for deep hole drilling and boring machines. The above are rolling heads for general lathes, which are special rolling heads for deep hole drilling and boring machines.
Insufficient application of rolling
1. Rolling will produce a hardened layer on the surface of the workpiece. This layer and the internal material have obvious delamination, which simply causes the surface to fall.
2. The rolling process is difficult to master, improperly handled, and simply cause waste.
3. Rigidity, 1000N-3000N, will cause great damage to the guide rail of the machine tool transmission mechanism, severely impairing the accuracy and life of the machine tool.
4. The tool has a short service life and is easy to be damaged, so it can be concluded that the service cost is high.
5. It can't meet the processing of parts with poor rigidity such as slender rods and thin-walled pipe fittings.
Solution: Metal surface processing: using the characteristics of metal cold plasticity at room temperature, using the metal surface to be ground without a grinder, so that the surface of metal parts can reach more aspirational surface roughness requirements, which can also be said to be similar to ironing clothes. , The surface of the parts is ironed; at the same time, the desired compressive stress occurs on the surface of the parts, which improves the microhardness, wear resistance, fatigue strength and fatigue life of the parts.