What is the difference between single support and double support on the reducer

The difference between a double-support planetary reducer and a single-support planetary reducer.

Overview of double-support planetary reducers and single-support planetary reducers.

We can see from the internal structure diagram of the planetary reducer that the double support of the planetary reducer and the single support of the planetary reducer refer to the planetary carrier of the planetary reducer. The planetary carrier of the planetary reducer and the output shaft of the planetary reducer are integrated structures, so whether the planetary carrier of the planetary reducer is done well or not directly affects the performance of the planetary reducer in all aspects.

The difference between a double-support planetary reducer and a single-support planetary reducer.

1. Differences in structure.

The planetary carrier of the double-support planetary reducer is hollowed out by CNC, and then the pin hole is punched in the upper machining center, and the pin hole of the upper and lower sides must be completely concentric (otherwise the gear and gear will not be meshed), and then put in the gear, and finally fixed with the pin, and both sides of the gear are supported by the planetary carrier.

The single-support planetary reducer makes three pin holes on the planetary carrier, puts three pins, and then fixes the gear on the pin, one side of the gear is the planetary carrier, the other side is suspended, and a stop is placed behind to separate.

Double-support planetary reducer.

2. The difference between forces.

The gears on the planetary carrier of the double-support planetary reducer are stressed on both sides, and the gears on the planetary carrier of the single-support planetary reducer are stressed on only one side.

3. Differences in performance.

The gear of the single support planetary reducer will deviate in the opposite direction of the output shaft transmission, and the friction coefficient between the planetary gear and the inner ring of the planetary gear will increase, which will lead to the increase of noise of the planetary reducer, the decrease of efficiency, the increase of temperature, and even the serious phenomenon of oil leakage.

In addition, the planetary reducer is mainly used to cooperate with the servo motor, and the characteristics of the servo motor are that the size is small, the precision is high, and the frequent forward and reverse rotation is used, when the single-support planetary reducer is used with the servo motor for frequent forward and reverse rotation, the gear pin on the planetary carrier of the single-support planetary reducer is easy to produce rigid deformation, so it will lead to the gap of the single-support planetary reducer to become larger.

Because the double-support planetary reducer has supports on both sides of the planetary carrier, the gears will not deviate to one side when the double-support planetary reducer is driven, and the gear pins will not produce rigid deformation.

Planetary reducer single support.

Because there are support points on both sides of the gear, when the output of the servo planetary reducer is loaded, the gear will not deviate to one side. Because there will be no slippage and lock immortality, it can ensure concentricity. The accuracy is more accurate.

4. The difference in cost.

The double-support planetary reducer must first empty the middle of the planetary carrier with CNC, and then punch holes in the upper machining center, and must also ensure that the pin holes of the upper and lower sides are completely concentric. Therefore, the processing cost of the double-support planetary reducer is about 20% more than that of the single-support planetary reducer. Therefore, the double-support planetary reducer is much more expensive than the single-support planetary reducer.

The double support takes longer, mainly for precision planetary gear reducers.

Single support: there is only one support point, when it is stressed, the gear will deviate to the other side, the noise will rise, the friction will increase, the force will be too large and deformed, and the strength will become worse after a long time;

Double support: There are two support points, its bearing and gear frame are integrated, each hole must correspond up and down, to be accurate in place, there can be no deviation.

The output planetary carrier of Zhuochuang transmission planetary reducer adopts an integrated double-bracing structure, high precision, low clearance and high torque, and quality service are recognized in the industry.

The double support servo reducer has two support points, its bearing and planet carrier are integrated, and each pin hole must be corresponding to the top and bottom, which must be accurate, and ensure that it is completely concentric, and there can be no deviation.

There is only one support point for a single support, and you only need to punch holes in the corresponding three corners at will, even if you make a mistake, it can be re-punched at a 30-degree angle. When the reducer of single support is stressed, the gear will deviate to the other side, the noise will increase, the friction will increase, the force will be too large to deform the gear of the reducer, the strength will become worse after a long time, and the processing cost is lower than that of double support.

The planetary reducer with double support structure has support points on both sides of the gear, and the gear will not deviate to one side when the output end of the servo reducer is loaded. Because there will be no slippage and lock immortality, it can ensure concentricity. The accuracy is more accurate.

The planetary reducer with a single support structure has only one side of the support point, when the output end of the servo reducer is loaded, after running for a period of time, the gear will deviate to one side, and because of this, many customers have said that it is good to use imports, not to use domestic ones, and that the domestic planetary reducers cannot meet the requirements. That's because the planetary reducer used by the customer is said to have a single support structure.

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The single support structure of the planetary reducer is not as good as the double support structure! Because only one side of the single support structure has a support point, only one side is forced, and even if it is missed when punching, it can be re-punched in a different position, which will not affect the use. Low cost.

When the force is too large, the gear will deviate to the other side, so the friction will increase, and the pin will be rigidly deformed, so the noise will be large, and the gap will also become larger. The double support structure is that there are support points on both sides, the output shaft and the planet carrier are integrated, the gears are wrapped in it, and the upper and lower sides should be punched, without any deviation, and the force will also be stressed on both sides, which can completely ensure concentricity.