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XINLAN Machinery Equipment Co., Ltd.

XINLAN Machinery Equipment Co., Ltd.

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The concept of planetary reducer

来源: 发布日期:2011-5-6 17:45:43

One: the number of stages  

Number of stages: the number of planetary gears. Since one set of planetary gears cannot meet the larger transmission ratio, sometimes 2 or 3 sets are needed to meet the user's requirements for larger transmission ratios. Due to the increase in the number of planetary gears, the second level Or the length of the 2-stage reducer will increase, and the efficiency will decrease.  

Two: Return clearance:  

Return clearance: Fix the output end and rotate the input end clockwise and counterclockwise to make the input end produce rated torque +-2% torque, there is a slight angular displacement at the input end of the reducer, and this angular displacement is the return clearance. Unit It is a "point", which is one-sixtieth of a degree. Some people call it backlash.  

The main transmission structure is: planetary gear, sun gear, and outer ring gear.  

Due to the structure of the planetary reducer, the single-stage reduction is 3, generally not more than 10, and the common reduction ratio  

为:3.4.5.6.8.10,减速机级数一般不超过3,但有部分大减速比定制减速机有4级减速.相对其他减速机,行星减速机具有高刚性,高精度(单级可做到1分以内),高传动效率(单级在97%-98%),高的扭矩/体积比,终身免维护等特点.  

Because of these characteristics, planetary reducers are mostly installed on stepper motors and servo motors to reduce speed, increase torque, and match inertia.  

减速机额定输入转速可达到18000rpm(与减速机本身大小有关,减速机越大,额定输入转速越小)以上,工业级行星减速机输出扭矩一般不超过2000Nm,特制超大扭矩行星减速机可做到10000Nm以上.工作温度一般在-25℃到100℃左右,通过改变润滑脂可改变其工作温度.