Precision gear related instructions

Precision gearRefers to relatively high parameter size and performance requirements, respectively as follows.

1. The parameters involve:

Modulus, pressure angle, addendum circle outer diameter, tooth root circle outer diameter, index circle diameter (also known as common normal), index circle tooth thickness, helical tooth inclination angle, tooth ring runout tolerance, etc.

2. In terms of performance:

The selection of materials and the precision requirements of other assembly dimensions.

In terms of application, representative equipment such as the transmission parts in printers and copiers, and the VCD drive bracket is more common.

If the gears cannot meet the precision requirements, the in and out movement of the bracket will be unstable, accompanied by vibration or swinging motion, and the voice will be super loud. Based on this, we can have a rational understanding of the definition and importance of precision.

Precision gearIn terms of accuracy, there are grades. The international standard is that the higher the grade, the more precise, and the Japanese standard is that the smaller the grade, the more precise.

According to the JIS standard, most precision mold factories can only reach grade XNUMX and grade XNUMX gears. The level of gears that can reach grade XNUMX gears is already very high.

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