Description of 4 kinds of gear finishing methods

4 typesGear finishing methodThe descriptions are as follows, for reference, and you can consult EP for free if you are unclear.

1. Gear grinding

According to the processing principle, it can be divided into two types: forming method grinding and generating method grinding.

Grinding teeth is specially used for finishing hardenedgear.

2. Honing tooth processing

Gear honing is performed on a special gear honing machine. The gear honing machine is not much different from the gear shaving machine, but the speed is much higher.

The principle of honing and shaving is exactly the same.When the hardness of the workpiece exceeds 35HRC, the shaving cutter is powerless, and honing is used instead of shaving.

The tool used for tooth honing is a honing wheel, which is cast or hot pressed with abrasives and epoxy resin, which has a very high tooth profile accuracy.helical gear.

When it drives the workpiece to rotate at a high speed, it can cut a very thin metal layer on the surface of the workpiece, reducing the roughness of the tooth surface.

Gear honing does not greatly improve the tooth profile accuracy, mainly to reduce the gear tooth surface roughness after heat treatment.

3. Grinding gear processing

The abrasive is added to the grinding tool of the grinder, and the gear is processed by the meshing between the grinding tool and the workpiece.

Only when the workpiece margin is not large, can the precision and productivity of gear grinding be effectively improved.

4. Shaving processing

In principle, gear shaving is a generative process. The tool used is a gear shaving cutter. Its shape is very similar to a helical cylindrical gear. The tooth profile is very accurate, and many small grooves are opened on the tooth surface to form Cutting edge.

In the process of meshing with the machined gear, the numerous cutting edges on the tooth surface of the shaving cutter shave the filamentary chips from the surface of the workpiece, which improves the accuracy of the tooth profile and reduces the roughness of the tooth surface, as shown in the figure.

Gear shaving is specially used to process unhardened spur and helical cylindrical gears with high productivity.It is the most widely used finishing method for cylindrical gears.

In order to further improve the machining accuracy of the gear, the product must be finished.Because of the gears after hobbing or shaping, there are certain errors in the tooth profile and the size of the gear teeth.If the product is quenched again, the error will increase.For unhardened gears, gear shaving can be used for finishing; for products that need hardening, gear grinding can be used for finishing.For more related instructions, you can consult our technology free of charge.