Planetary reducer is a widely used traditional equipment for reducing speed. Planetary reducer mainly realizes transmission accuracy through the cooperation between gears. Many people don't understand the return clearance of planetary reducer. Zhuochuang transmission technology editor will give you a brief introduction.
Clearance refers to the clearance between gears, which is generally called return clearance, also known as back clearance. The lower the return clearance (or back clearance, clearance) in the neutral energy parameters of the planetary reducer, the higher the transmission accuracy, the more expensive the price and the higher the transmission efficiency (the unit is arcmin, generally referred to as the high-precision type below 3, and the low-precision type above 15).
Return clearance: fix the input end and rotate the output end clockwise and anticlockwise. When the output end bears plus or minus 2% of the rated torque, the output end of the reducer has a small angular displacement, which is called return clearance, also known as "back clearance". The unit is "minute of arc", i.e. 1/60 of one degree.
Accuracy unit of planetary reducer "minute of arc":
Arcmin [arcmin]: once divided into 60 arcmin (=60 arcmin=60 ') If the return clearance is marked as 1 arcmin, it means that the reducer rotates for one turn, and the angular deviation of the output end is 1/60 °. In practical application, this angular deviation is related to the shaft diameter, b=2 · π · R · a ° /360 °. That is, when the radius of the output end is 500mm, and the accuracy of the gearbox is jt=3 ', that is, a ° =3/60, the deviation of the reducer for one revolution is b=0.44mm.
The basic knowledge of the return clearance of the planetary reducer is the above. The single-stage accuracy of the planetary reducer produced by zhuochuang transmission technology is not greater than 2 arc minutes, and the double-stage accuracy is not greater than 4 arc minutes. In general, the accuracy is very high and the quality is good.
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