What Is The Difference between A Worm Gear And A Forming Grinding Wheel Gear Grinding Machine?

The main differences between worm wheel gear grinding machines and forming wheel gear grinding machines are reflected in processing principles, processing efficiency, applicability, and machine tool structure. The specific analysis is as follows:

1. Working principle

-The working principle of a worm wheel grinding machine is similar to that of a hobbing machine, which uses a grinding wheel with a worm shape to continuously mesh with the gear, forming an involute shape of the gear teeth.

-The forming grinding wheel gear grinding machine directly grinds the tooth profile of the gear by matching a specific tooth profile grinding wheel, similar to using a cutting tool to directly cut the shape of the gear.

2. Processing efficiency

-The worm wheel gear grinding machine is suitable for large-scale production of small and medium-sized module gears because it uses the generation method for grinding, which is the most efficient method in batch grinding of small and medium-sized module gears.

-The forming grinding wheel gear grinding machine can process gears with large diameter, large modulus, and few teeth, which is more suitable for flexible production and complex tooth surface modification. Its production efficiency may be limited to a certain extent, but its grinding contact area is larger than that of generative grinding, which can also achieve faster material removal and improve grinding efficiency.

3. Scope of application

-The forming grinding wheel gear grinding machine is not limited by the size of the module or the number of teeth, and is suitable for high-precision gears with requirements for tooth shape modification, drum shape requirements in tooth direction, and special requirements for tooth root and tooth top transition parts. The accuracy can reach 2-3 levels and is stable at 3 levels.

-Although the worm wheel gear grinding machine can also achieve high precision machining, its accuracy may not be as high as that of the forming wheel gear grinding machine, and the grinding wheel needs to be replaced when machining gears of different moduli, which to some extent limits its applicability.

3. Machine Tool Structure

-The structure of the forming grinding wheel gear grinding machine is simple, the performance is stable and reliable, the price is relatively cheap, and maintenance is convenient.

-The structure of the worm wheel grinding machine is relatively complex and may require more maintenance and technical support.

In summary, for large-scale production of standard gears with small and medium-sized modules, worm wheel grinding machines may be more suitable; For gears with extremely large module and few teeth, or special tooth profile machining, forming grinding wheel gear grinding machines may be more suitable.