In the forming process, the order of movement of the milling tool is as follows: fast forward to the safe distance - work forward to the cutting depth - tool return. SPIRON gear milling cutter process for dry cutting, so the cutting heat generated by the most will be take away by scrap iron, scrap iron in blue, for the best cutting state, so the cutting parameter setting as basic principles.

The cutting line speed of the carbide gear cutting tool is set at 180-220m/min, which is the most suitable. The constant line speed cutting method is usually adopted to reduce tool wear. The selection of cutting parameters is based on: in the initial stage of cutting, the cutting force is not too large, so the feed speed can be increased appropriately, since only the tip part participates in cutting. At the end of the cutting process, most of the cutting edges of the teeth will be involved in cutting, so the feed speed should be reduced. In order to improve the roughness of the tooth surface, the tool needs to stay at the final dimension for a certain time when the tooth depth is reached.

Unlike displayed, when generating method processing tool motion sequence is that fast forward to a safe distance from - to the cutting depth, cutting tool back in work - cutting tool cuts - cradle swing again gradually return finished cutting - tools.

Generative cutting, the cutting depth of the allowance allocation problem: due to the generating method processing, tooling need a second cut, therefore involve generating surplus allocation problem, such as the distribution of allowance is too small, will cause the generative process, tool vibration, tooth surface roughness; If the residual amount distribution is too large, the tool will be under too much force and the tool life will be affected. After a lot of trial and error in the field, the optimal JW machining allowance is 0.3-0.5mm. Generative cutting stage cutting parameter selection: when carries on the generative cutting, generally starting gear big end cutting, cutting allowance is bigger, so at this stage of the feeding should be appropriate, tooth width as generative approaches to the end, because the machining allowance is very small, may be appropriately increased feeding.

Tool wear judgment basis, according to the scrap color judgment

If the tool is in good condition, the iron chips shall be dark blue to light blue, and the surface of the iron chips shall be smooth and smooth. If the cutting tool is in poor condition, or after wear, the cutting iron chip is generally yellow to white, and the iron chip surface is rough and curly, indicating that the cutting heat has not been fully taken away.

If carbide gear cutting tool is in good condition, when cutting, the machine load is stable and the fluctuation is small, the maximum is about 20%. On the contrary, the load of machine tool fluctuates greatly, sometimes reaching more than 30%.

When the cutter is in good condition, the tooth surface is smooth and the burrs are small. When the cutter is in poor condition, the tooth surface is rough and the side burr is large.

Before using the new coated blade, the cutting edge is complete and sharp, and the overall color of the coating is grey and black. After wear, the tool cutting edge coating part has worn, the cutting edge is white, there are some serrated or even broken edges.

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