CN207583939U - A kind of precision duplex planet speed reducer device - Google Patents
A kind of precision duplex planet speed reducer device Download PDFInfo
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- CN207583939U CN207583939U CN201721250456.9U CN201721250456U CN207583939U CN 207583939 U CN207583939 U CN 207583939U CN 201721250456 U CN201721250456 U CN 201721250456U CN 207583939 U CN207583939 U CN 207583939U
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Abstract
The utility model provides a kind of accurate duplex planet speed reducer device, and main device structure combines altogether including two groups of engaging tooth wheel sets with separating planet frame, and rear end is also integrated with a helical teeth driving wheel；First group is external gear pump pair, is arranged on outside planet carrier, is made of respectively several planetary gears and the intermeshing of sun gear tooth shaft；Second group is internal gear pair, is arranged on inside planet carrier, is made of respectively several planetary gear tooth shafts and fixed ring gear intermeshing；Separating planet frame combination contains front end planet carrier and rear end planet carrier；The planetary gear tooth shaft in planetary gear and internal gear pair wherein in external gear pump pair forms duplex planet structure by screw locking；Rear end driving wheel is integrated in sun gear tooth shaft, and the rear end driving wheel is driven by motor tooth shaft, so as to drive the rotation of entire speed reducer；The utility model has the advantages of high-precision, high rigidity, low noise, low back clearance.
Description
Technical field
The utility model is related to accurate planetary reducer technical field more particularly to a kind of accurate duplex planet speed reducer dresses
It puts.
Background technology
Existing robot joint arm speed reducer is mainly with RV speed reducers, NGW planetary reducers, and harmonic wave speed reducing machine is
It is main.
1 involute gear of essential core component inside RV speed reducers, 2 double-eccentric shafts, 3 Cycloidal Wheels, 4 needle teeth.It is this new
The speed reducer of type has many advantages, such as speed high, small, light-weight, high rigidity more accurate than big, positioning, so general transmission accuracy
It can accomplish within an arc point, still, the bent axle in RV critical components, cycloid, the processing of needle tooth is relatively difficult, and technics comparing is difficult to
Control, and the lathe for processing this parts product is expensive, thus this robot with low back clearance speed reducer cost very
Height, Japan monopolize this technology and patent for a long time.
NGW type planetary reducers, 1 planetary gear of essential core component, 2 sun gears, 3 defeated planet carriers, 4 gear rings.But at present
For NGW type star speed reducers because the reason of structure, single gear-stage velocity ratio maximum can only accomplish 12 ratios, for relative accuracy, the contact of gear
Rate is not high, thus the precision of NGW planetary reducers entirety preferably can only to 3 arcs point or so, then improve complete machine precision it is very tired
Difficulty, the rigidity of planetary reducer complete machine, intensity, precision can not all be mentioned in the same breath with RV speed reducers.
There is a kind of harmonic wave speed reducing machine on the market, the essential core component of harmonic wave there are three 1. steel wheel, 2. flexbile gear, 3. waves
Device.But the reason of because of flexbile gear structure, flexbile gear structural walls thickness is very thin, determines its service life, rigidly there is certain pole
Range is limited, its rated output torque can not possibly be mentioned in the same breath with RV and planetary reducer.
Invention content
In place of the utility model is avoids above-mentioned the shortcomings of the prior art, a kind of high-accuracy, high rigidity, the low back of the body are provided
Gap, low-noise device, the purpose of this utility model are to develop a kind of novel planetary speed reducer, being capable of substitute machine person joint's arm
RV planetary reducers, the speed reducer Structure of need is simple, but have and the same rated output torque of RV speed reducers, have it is high-precision
Degree, the advantages of high rigidity, low noise, low back clearance, but whole parts machining technics comparing RV, difficulty of processing reduce, pair plus
Construction equipment requirement is simple, and the processing cost that can reduce enterprise simultaneously, but can ensure that the outstanding performance of complete machine.
A kind of precision duplex planet speed reducer device, including separating planet frame, two groups of engaging tooth wheel sets and a helical teeth
Driving wheel；
The separating planet frame includes front end planet carrier and rear end planet carrier；
Two groups of engaging tooth wheel sets include first group of external gear pump pair and second group of internal gear pair；
First group of external gear pump pair includes several straight-tooth planetary gears and straight-tooth sun gear tooth shaft, the two are mutually nibbled
Close the outside for being arranged on separating planet frame；
Second group of internal gear pair includes several planetary gear tooth shafts and fixed ring gear, and the two intermeshing is arranged on
Inside separating planet frame；
Straight-tooth planetary gear wherein in external gear pump pair passes through screwed lock with the planetary gear tooth shaft in internal gear pair
It is tight to form duplex planet structure；
The helical teeth driving wheel is arranged on straight-tooth solar wheeling tooth shaft rear end, and helical teeth driving wheel is connected with external motor tooth shaft；
The front end of the front end planet carrier is provided with outside framework oil seal, on the center of outside framework oil seal, the front end planet carrier
It is provided with oil seal cover sealing；
The planetary gear tooth shaft is provided with cylinder roller bearing between front end planet carrier, rear end planet carrier respectively；
Angular contact bearing is provided between the helical teeth driving wheel and straight-tooth sun gear tooth shaft are front and rear；
The fixed ring gear is provided with taper roll bearing between front end planet carrier, rear end planet carrier respectively.
Improvement to above-mentioned technical proposal：Fixed ring gear realizes sealing by the O-ring seal being disposed thereon.
Improvement to above-mentioned technical proposal：In internal gear pair, planetary gear tooth shaft and the tooth form of fixed ring gear are
Involute becomes transverse tooth thickness structure.
The beneficial effects of the utility model are：
It, can be with optimization more relative to traditional single-stage NGW planetary reducers using such NW duplexs speed reducer structure
Big gearratio, the mono- gear-stage velocity ratios of NGW can only accomplish 12 ratios, and NW type list gear-stage velocity ratios can reach 50 ratios, can be flexibly according to client
Demand, provide bigger speed ratio and torque；
Relatively current RV speed reducers, the speed reducer structure is compact, and face rate is high, and carrying is more preferable, and noise is lower,
But cost is relative to the Cycloidal Wheel of core in RV, the manufacturing process relative maturity of gear, nor need special costliness
Special installation machining crankshafts；
3. becoming transverse tooth thickness technology using involute wherein in internal gear pair, backlash is adjusted by special entity
4. the speed reducer employs novel separating planet frame structure；
5. the type speed reducer is simple and reliable, easy to maintenance；
6. the type speed reducer for RV speed reducers, has used gear oil lubrication point mode, cooling effect more preferably, together
When complete machine price for RV, advantageously
Description of the drawings
Fig. 1 is the schematic diagram of the speed reducer of the utility model.
Shown in figure：1st, planetary gear tooth shaft, 2, front end planet carrier, 3, fixed ring gear, 4, rear end planet carrier, 5, straight-tooth row
Star-wheel, 6, helical teeth driving wheel, 7, straight-tooth sun gear tooth shaft, 8, outside framework oil seal, 9, oil seal cover, 10, cylinder roller bearing, 11, angle
Contact bearing, 12, taper roll bearing, 13, O-ring seal.
Specific embodiment
With reference to specific drawings and examples, the utility model is described in further detail.
As shown in Figure 1：A kind of precision duplex planet speed reducer device, including separating planet frame, two groups of engaging tooth wheel sets
An and helical teeth driving wheel 6；
The separating planet frame includes front end planet carrier 2 and rear end planet carrier 4；
Two groups of engaging tooth wheel sets include first group of external gear pump pair and second group of internal gear pair；
First group of external gear pump pair includes several straight-tooth planetary gears 5 and straight-tooth sun gear tooth shaft 7, the two intermeshing
It is arranged on the outside of separating planet frame；
Second group of internal gear pair includes several planetary gear tooth shafts 1 and fixed ring gear 3, the two intermeshing setting
Inside separating planet frame；
Straight-tooth planetary gear 5 wherein in external gear pump pair passes through screw with the planetary gear tooth shaft 1 in internal gear pair
Locking forms duplex planet structure；
Helical teeth driving wheel 6 is arranged on 7 rear end of straight-tooth sun gear tooth shaft, and helical teeth driving wheel 6 is connected with external motor tooth shaft（Not
Draw external motor）；
The front end of front end planet carrier 2 is provided with outside framework oil seal 8, on the center of outside framework oil seal 8, the front end planet carrier 2
Oil seal cover 9 is provided with to seal；
Planetary gear tooth shaft 1 is provided with cylinder roller bearing 10 between front end planet carrier 2, rear end planet carrier 4 respectively；
Angular contact bearing 11 is provided between helical teeth driving wheel 6 and straight-tooth sun gear tooth shaft 7 are front and rear；
Fixed ring gear 3 is provided with taper roll bearing 12 between front end planet carrier 2, rear end planet carrier 4 respectively, here
Taper roll bearing be the roller bearing of specific structure designed according to this speed reducer.
Improvement to above-mentioned technical proposal：Fixed ring gear 3 realizes sealing by the O-ring seal 13 being disposed thereon.
Improvement to above-mentioned technical proposal：In internal gear pair, planetary gear tooth shaft 1 and the tooth form of fixed ring gear 3 are equal
Become transverse tooth thickness structure for involute.
Concrete operating principle is；Helical teeth driving wheel 6 is connected with motor tooth shaft, is driven by motor tooth shaft, straight so as to drive
The transmission of tooth sun gear tooth shaft 7, straight-tooth sun gear tooth shaft 7 and 5 external toothing of straight-tooth planetary gear, the rotation of straight-tooth sun gear tooth shaft 7
Straight-tooth planetary gear 5 is driven to operate, straight-tooth planetary gear 5 passes through screw locking with the fixation planetary gear tooth shaft 1 in internal gear pair
Form duplex planet structure, tooth shaft 1 rotates at this time, tooth shaft 1 with fixed 3 internal messing of ring gear because gear ring 3 is fixed,
The rotation of planetary gear tooth shaft 1 is so as to drive the transmission of planet carrier 2,4.
Wherein fixed planetary gear tooth shaft 1 is engaged with fixed ring gear 3 as parallel axes internal gear pair, sun gear tooth shaft
7 engage with straight-tooth planetary gear 5 for external gear pump pair, and in internal gear pair, fixed planetary gear tooth shaft 1 with it is fixed
The advantages of involute that ring gear 3 employs my novel company's exploitation becomes transverse tooth thickness structure, and this involute becomes transverse tooth thickness be, this
One special entity can adjust the backlash of two gears by axial movement, and transmission accuracy can be less than 1 arc point, so very
Suitable for precision drive occasion, theoretically the gear of this occasion can be that theoretical line contact can also be contacted with face, in addition
The speed reducer reduces complete machine heating temp by the way of gear oil lubrication, extends the service life of speed reducer, opposite to lubricate
It is even more the cost for reducing speed reducer for fat
It should be noted last that more than specific embodiment is only to illustrate the technical solution of the utility model rather than limit
System, although the utility model is described in detail with reference to example, it will be understood by those of ordinary skill in the art that, it can be right
The technical solution of the utility model is modified or replaced equivalently, without departing from the spirit and model of technical solutions of the utility model
It encloses, should all cover in the right of the utility model.
Claims (3)
1. a kind of precision duplex planet speed reducer device, which is characterized in that including separating planet frame, two groups of engaging tooth wheel sets and
One helical teeth driving wheel（6）；
The separating planet frame includes front end planet carrier（2）With rear end planet carrier（4）；
Two groups of engaging tooth wheel sets include first group of external gear pump pair and second group of internal gear pair；
First group of external gear pump pair includes several straight-tooth planetary gears（5）With straight-tooth sun gear tooth shaft（7）, the two is mutual
Engagement is arranged on the outside of separating planet frame；
Second group of internal gear pair includes several planetary gear tooth shafts（1）With fixed ring gear（3）, the two intermeshing setting
Inside separating planet frame；
Straight-tooth planetary gear wherein in external gear pump pair（5）With the planetary gear tooth shaft in internal gear pair（1）Pass through screw
Locking forms duplex planet structure；
The helical teeth driving wheel（6）It is arranged on straight-tooth sun gear tooth shaft（7）Rear end, the helical teeth driving wheel（6）With external motor
Tooth shaft is connected；
The front end planet carrier（2）Front end be provided with outside framework oil seal（8）, in outside framework oil seal（8）Center, the front end planet
Frame（2）On be provided with oil seal cover（9）Sealing；
The planetary gear tooth shaft（1）Respectively with front end planet carrier（2）, rear end planet carrier（4）Between be provided with cylinder roller bearing
（10）；
The helical teeth driving wheel（6）With straight-tooth sun gear tooth shaft（7）Angular contact bearing is provided between front and rear（11）；
The fixed ring gear 3 respectively with front end planet carrier（2）, rear end planet carrier（4）Between be provided with taper roll bearing
（12）.
2. a kind of accurate duplex planet speed reducer device as described in claim 1, which is characterized in that
The fixed ring gear（3）Pass through the O-ring seal being disposed thereon（13）Realize sealing.
A kind of 3. accurate duplex planet speed reducer device as described in claim 1, which is characterized in that the inside engaged gear
In pair, planetary gear tooth shaft（1）With fixed ring gear（3）Tooth form be involute become transverse tooth thickness structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721250456.9U CN207583939U (en) | 2017-09-27 | 2017-09-27 | A kind of precision duplex planet speed reducer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721250456.9U CN207583939U (en) | 2017-09-27 | 2017-09-27 | A kind of precision duplex planet speed reducer device |
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| Publication Number | Publication Date |
|---|---|
| CN207583939U true CN207583939U (en) | 2018-07-06 |
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| CN201721250456.9U Active CN207583939U (en) | 2017-09-27 | 2017-09-27 | A kind of precision duplex planet speed reducer device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514444A (en) * | 2017-09-27 | 2017-12-26 | 无锡威孚中意齿轮有限责任公司 | A kind of accurate duplex planet speed reducer structure |
| CN111963668A (en) * | 2020-07-21 | 2020-11-20 | 江苏国茂减速机股份有限公司 | Planetary gear speed reduction transmission structure and speed reducer with same |
| CN112503142A (en) * | 2020-12-11 | 2021-03-16 | 湖北航天技术研究院特种车辆技术中心 | NW type planetary gear speed reducer and transmission system |
-
2017
- 2017-09-27 CN CN201721250456.9U patent/CN207583939U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514444A (en) * | 2017-09-27 | 2017-12-26 | 无锡威孚中意齿轮有限责任公司 | A kind of accurate duplex planet speed reducer structure |
| CN111963668A (en) * | 2020-07-21 | 2020-11-20 | 江苏国茂减速机股份有限公司 | Planetary gear speed reduction transmission structure and speed reducer with same |
| CN111963668B (en) * | 2020-07-21 | 2021-08-27 | 江苏国茂减速机股份有限公司 | Planetary gear speed reduction transmission structure and speed reducer with same |
| CN112503142A (en) * | 2020-12-11 | 2021-03-16 | 湖北航天技术研究院特种车辆技术中心 | NW type planetary gear speed reducer and transmission system |
| CN112503142B (en) * | 2020-12-11 | 2021-12-14 | 湖北航天技术研究院特种车辆技术中心 | NW type planetary gear speed reducer and transmission system |
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