Gear processing process:
1. Forging gear blank
2. Normalized:
The purpose of this process is to obtain hardness suitable for the cutting of rear sequence gear and to prepare the structure for the final heat treatment to effectively reduce heat treatment deformation. The gear steel used is usually 20CrMnTi.
3. Turning processing
In order to satisfy the high precision positioning requirement of gear machining, gear blank processing all adopt numerical control lathe, using mechanical clamping not heavy ground vehicles Under the knife, realized in a clamping aperture, end face and outside processing synchronization is complete, not only ensure the inner hole and end face of the vertical degree requirements, and ensures that the size of the discrete small gear billet production in large quantities. Thus the precision of gear blank is improved and the machining quality of rear sequence gear is ensured .

In order to meet the requirements of surface quality and machining accuracy of stainless steel parts, grinding is usually used. 

Due to the high toughness, low thermal conductivity and small elastic modulus of stainless steel, there are often the following problems in grinding:

1. Grinding wheel is easy to stick and jam.

2. The processing surface is easy to burn.

3. Work hardening phenomenon is serious.

4. The workpiece is easy to deform.

Generally, the dicing blade is made of synthetic resin, copper, tin, nickel and so on, which are combined with artificial diamond as binder. It is mainly divided into two categories: hard cutter with wheel hub and integral cutter without wheel hub. It is suitable for processing chips and semiconducting materials of different types.

Turning finishing method:

The single point diamond dressing tools installed on the tool rest usually inclines about 5°~15° in both vertical and horizontal directions, the contact point between the diamond dressing tools and grinding wheel should be 0.5~2 mm lower than the axis of grinding wheel, and the diamond dressing tools should move evenly at low speed during dressing.

After grinding, the workpiece surface roughness Ra<0.01m, the light like mirror, can be clearly imaging, so it is called mirror grinding. The flatness of the grinding surface is not greater than 3m/1000mm. Surface grinding of high precision and high added value parts is required.

Ultra-high strength steel is a kind of alloy steel used to make structural parts under high stress. General flexural strength is greater than 1180MPa, tensile strength is greater than 1380MPa this kind of steel generally has enough toughness and high specific strength and flexural ratio, and good weldability and formability. According to alloying degree and microstructure, it can be divided into low alloy, medium alloy and high alloy ultra-high strength steels. When grinding ultra-high strength steel, the grinding force, grinding temperature and grinding surface quality of workpiece will be greatly affected by the grinding amount. Increasing the grinding wheel speed can decrease the grinding force but increase the grinding temperature.