What are the essential elements of gear testing?

& nbsp; & nbsp; what are the necessary elements of gear testing? The working quality of the components in the machine depends on the manufacturing quality of the basic elements which have the greatest impact on the working quality of the mechanism. In production and inspection, the main attention should also be paid to these elements. The main factors on gears are:
& nbsp; & nbsp; 1. tooth thickness.
& nbsp; & nbsp; 2. Concentricity of mating surfaces of gear pairs:
& nbsp; & nbsp; 3. The position of teeth on the circumference.
& nbsp; & nbsp; 4. tooth type.
& nbsp; & nbsp; 5. direction of teeth;
& nbsp; & nbsp; parallelism of gear axis;
& nbsp; & nbsp; inclination angle of teeth;
& nbsp; & nbsp; angle of indexing cone and distance of cone vertex to supporting face of gear.
& nbsp; & nbsp; the smoothness of the working surface of the gear, the hardness of the working surface, the quality of the gear blank material and the width of the gear have a great impact on the work trade of the gear. These elements of gear are tested by mdash, commonly known methods and tools without special performance.