Non-cutting processing methods for small modulus gears: injection molding, powder metallurgy, cold rolling and hot rolling

The non-cutting processing methods of small modulus gears: injection molding, powder metallurgy, cold rolling and hot rolling are described below for reference.

Injection molding:

Processing gear type:

Straight teeth of internal and external gears andhelical gear.

Features of processing method:

1. Die manufacturing is complicated.

2. The process is simple,gearThe accuracy is up to 8 levels.

3. Use an injection molding machine to inject the engineering plastics in a molten state under high temperature and high pressure into the mold to form and solidify.

Powder metallurgy:

Processing gear type:

Straight and helical gears.

Features of processing method:

1. The accuracy is up to 8 levels.

2. Mix the metal powder according to the prescribed proportion of the formula, and after special treatment, put it into the mold, press and sinter it to form.

Cold rolled:

Processing gear type:

Straight and helical gears.

Features of processing method:

1. The gear has good strength and good wear resistance on the tooth surface.

2. The gear accuracy is level 7, and the tooth surface roughness is Ra0.4μm.

3. Use a rolling wheel to make the metal plastically deform into a tooth shape.

Hot rolled:

Processing gear type:

Straight and helical gears.

Features of processing method:

1. The accuracy is up to 8 levels.

2. It is the pre-processing before gear shaving and gear grinding.

3. After heating the tooth blank, use a rolling wheel to roll it into shape.

The above-mentioned non-cutting processing methods for small modulus gears include but are not limited to. If there are any deficiencies, please add them. If you have any unclear points or related requirements, you can consult EP for free.