CN205371517U - No return difference second grade cycloid awl tooth reduction gear - Google Patents
No return difference second grade cycloid awl tooth reduction gear Download PDFInfo
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- CN205371517U CN205371517U CN201620002300.8U CN201620002300U CN205371517U CN 205371517 U CN205371517 U CN 205371517U CN 201620002300 U CN201620002300 U CN 201620002300U CN 205371517 U CN205371517 U CN 205371517U
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Abstract
The utility model provides a no return difference second grade cycloid awl tooth reduction gear belongs to accurate mechanical transmission field, and it includes casing, input shaft, end cover, pin I, awl tooth cover I, toper cycloid wheel I, eccentric cover I, steel ball group, cross plate, pin II, awl tooth cover II, toper cycloid wheel II, eccentric cover II, output shaft, nut pretightening, support bearings, bearing end plate. This reduction gear adopts the driven infrastructure of the parallelly connected poor planet of few tooth of NN type second grade to tooth clearance with awl tooth cover meshing transmission, is eliminated through exerting the pretightning force as the flank profil to epicycloid toper profile that the toper cycloid took turns to, is equipped with the floating steel ball constant speed mechanism of nos tooth clearance simultaneously, have simple structure, small, the drive ratio big, zero tooth clearance, transmission precision height, low impact 's advantage. Simultaneously, be different from ordinary NN type cycloidal -pin wheel transmission, the utility model provides a 180 symmetries on the two toper cycloids wheel are installed in the eccentric shaft part of difference to connecting through floating steel ball constant speed mechanism, can realizing engagement force and inertia equilibrium of forces, inertial force is little when having the transmission operation, advantage that rocking arm bearing load is little, the life -span is high.
Description
Technical field
This utility model relates to a kind of accurate speed reduction gearing, can be applicable to the precision mechanical transmission fields such as robot, Digit Control Machine Tool, aviation, medical apparatus and instruments, instrument and meter.
Background technology
In order to improve transmission accuracy and the control accuracy of the precision optical machineries such as robot, require that the speed reduction gearing used has compact conformation, volume is little, gear ratio is big, backlash is little, response is fast, efficiency high, requires that speed reduction gearing has higher reciprocal positioning precision simultaneously.
The mechanism form of existing conventional accurate speed reduction gearing many employings single-stage K-H-V type or two grades of NN type few teeth difference transmissions.Wherein, the attainable transmission of single-stage K-H-V type few teeth difference transmission is smaller, it is difficult to adapt to the demand of robotic equipment's low-speed running.Two grades of NN type few teeth difference transmissions can realize higher gear ratio, but common NN type few teeth difference transmission, and two planetary gears are installed on same eccentric shaft part, and when transmission runs, inertia force is big, and rotary arm bearing load is very big, the life-span is relatively low, it is difficult to possess excellent transmission performance.
China Patent No. CN201320633087, publication date on March 12nd, 2014, disclose a name and be called the patent document of cycloidal ball planet deceleration device, its bearing A, spider, planetary plate and output panel are sequentially arranged on eccentric power shaft, spider is fixing with frame housing to be connected, the end face that spider is corresponding with planetary plate is respectively equipped with epicycloid enclosed slot and hypocycloid enclosed slot, it is provided with several steel balls A at epicycloid and hypocycloid mesh regional, the end face that planetary plate is corresponding with output panel is respectively equipped with enclosed slot, steel ball B it is provided with in enclosed slot, enclosed slot size and steel ball B diameter match.Deceleration device described in this patent can realize without return difference motion transmission, not self-locking, and efficiency is high, and security performance is good, but which employs the structure of single-stage K-H-V type few teeth difference transmission, and gear ratio is little, it is difficult to adapt to the demand of robotic equipment's low-speed running..
Chinese patent 200820076990.7, publication date on January 28th, 2009, disclose a name and be called constantly without return difference transmission fine grade ball planet speed reducer, it includes input eccentric shaft, end face has the spider of cycloid enclosed slot, combination type planetary plate, end face to have output panel and the frame of cycloid enclosed slot, and combination type planetary plate end face is made up of the planetary plate of cycloid enclosed slot the planetary plate of cycloid enclosed slot, butterfly spring, bearing pin and end face.This utility model solve precision steel ball planetary reducer because of Meshing Pair abrasion gap occurs, cause that transmission return difference and Meshing Pair thermal expansion cause card to be waited indefinitely problem, the automatic without return difference transmission constantly of decelerator can be realized, but in the NN type few tooth difference transmission mechanism that this utility model adopts, two planetary plates are installed on same eccentric shaft part, when transmission runs, inertia force is big, rotary arm bearing load is very big, the life-span is relatively low, and the machining accuracy of combination type planetary plate requires significantly high with assembly precision, therefore transmission performance is not good.
Utility model content
This utility model overcomes the defect of above-mentioned existence, it is provided that a kind of without two grades of cycloid cone tooth decelerators of return difference, belongs to precision mechanical transmission field.This decelerator adopts the basic structure of two grades of small Tooth Number Difference Planetary Transmission in parallel of NN type, the epicycloid profile taken turns using change gear of conical cycloid is as flank profil, with cone tooth set engaged transmission, backlash is eliminated by applying pretightning force, be equipped with the floating type steel ball constant speed unit without backlash simultaneously, have simple in construction, volume little, without return difference, the high and low impact of transmission accuracy, advantage that gear ratio is big.Simultaneously, it is different from common NN type Cycloidal pin-wheel drive, two change gear of conical cycloids in this utility model are taken turns 180 ° and are symmetrically arranged on different eccentric shaft parts, and connected by cross steel ball constant speed unit, the balance of engagement force and inertia force can be realized, there is inertia force when transmission runs little, the advantage that rotary arm bearing load is little, the life-span is high.
This utility model adopts the following technical scheme that a kind of without two grades of cycloid cone tooth decelerators of return difference, including power shaft, power shaft end cap, end cap, rotary arm bearing I, change gear of conical cycloid wheel I, pin I, cone tooth set I, eccentric bushing I, the first steel ball group, cross plate, the second steel ball group, cone tooth set II, pin II, change gear of conical cycloid wheel II, rotary arm bearing II, eccentric bushing II, axle sleeve, pre-load nut, output shaft end cap, output shaft, casing.It is characterized in that: power shaft is connected with eccentric bushing I by interference fit, and be connected with change gear of conical cycloid wheel I by rotary arm bearing I；Power shaft is connected with eccentric bushing II also by interference fit, and is connected with change gear of conical cycloid wheel II by rotary arm bearing II.Eccentric bushing I is equal with the eccentric throw of eccentric bushing II and is arranged symmetrically with in 180 °.Cross plate is taken turns at change gear of conical cycloid and is floated between I and change gear of conical cycloid wheel II.The right-hand member of output shaft is flange plate structure.End cap is connected with casing by screw group.
Further, the wheel rim of described change gear of conical cycloid wheel I is the epicycloid profile having certain taper, and the left side of end cap is provided with pin I, and pin I installs cone tooth set I.The tapering of cone tooth set I is identical with the wheel rim tapering that change gear of conical cycloid takes turns I, constitutes first order deceleration transmission Meshing Pair.The wheel rim of change gear of conical cycloid wheel II is also the epicycloid profile having certain taper, and output shaft right side is provided with pin II, and pin II installs cone tooth set II.The tapering of cone tooth set II is identical with the wheel rim tapering that change gear of conical cycloid takes turns II, constitutes second level deceleration transmission Meshing Pair.
Also include, described bores tooth decelerators without two grades of cycloids of return difference, on the left side of change gear of conical cycloid wheel I, processing has the vertical channel of one group of tapered cross-section, and on cross plate right side, also processing has the vertical channel of one group of same size tapered cross-section, is provided with the first steel ball group of activity between two groups of vertical channel.The II right side processing of change gear of conical cycloid wheel has the level trough of one group of tapered cross-section, and cross plate left side also processes the level trough of one group of same size tapered cross-section, is provided with the second steel ball group of activity between two groups of level troughs.
Also including, described bores tooth decelerators without two grades of cycloids of return difference, and the right block bearing of its power shaft adopts Internal and external cycle axial restraint mode, and the left block bearing of power shaft adopts inner ring axial restraint, outer ring play mode.In casing left end, hole machined has screw thread, is screwed into the left block bearing of the fixing output shaft of pre-load nut, is provided with stop washer between pre-load nut and casing.
After adopting above technical scheme, this utility model reaches to provide the benefit that:
(1) change gear of conical cycloid tooth profile is cased with identical tapering with cone tooth, backlash can be eliminated by axial pretightening, change gear of conical cycloid wheel I, cross plate, change gear of conical cycloid wheel II and steel ball fabric therebetween become floating type steel ball constant speed unit, in this constant speed unit, form four point gearing between the level trough in the upper conical cross section of each dish, vertical channel and steel ball and contact.When the reciprocal rotating work of decelerator, all can ensureing that this decelerator is capable of significantly high transmission accuracy without backlash, return difference is less than ± 4arc min.
(2) in floating type steel ball constant speed unit, the position of steel ball can float to adapt to part foozle in groove, and requirement on machining accuracy is low；In this constant speed unit, ball size is not by the impact of eccentric throw, can freely determine the size of steel ball, and bearing capacity is strong.
(3) two eccentric bushings on eccentric shaft part adopt 180 ° of bias to be arranged symmetrically with, and the inertia force of generation is reverse, it is possible to cancel out each other, thus balance inertial force, reduce the load suffered by rotary arm bearing, improve the rotary arm bearing life-span.
(4) in casing left end, hole machined has screw thread, is screwed into pre-load nut and promotes shafting components to move, and can eliminate the backlash of residual during just assembling, it is ensured that transmission accuracy.Meanwhile, stop washer is installed between pre-load nut and casing, it is prevented that pre-load nut produces to loosen.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the A-A profile of Fig. 1；
Fig. 3 is the B-B profile of Fig. 1；
Fig. 4 is the C-C profile of Fig. 1；
In Fig. 1～Fig. 4:
1 power shaft；The 2 right block bearings of power shaft；3 power shaft end caps；4 screw groups；
5 rotary arm bearing I；6 end caps；7 change gear of conical cycloid wheel I；8 pin I；
9 cone tooth set I；10 screw groups；11 first steel ball groups；12 cross plates；
13 second steel ball groups；14 casing；15 cone tooth set II；16 pin II；
17 change gear of conical cycloid wheel II；18 rotary arm bearing II；The 19 output shaft right block bearing 20 left block bearings of output shaft；
21 pre-load nuts；22 stop washers；23 output shaft end caps；24 output shafts；
25 screw groups；26 packing rings；27 circlips for shaft；The 28 left block bearings of power shaft；
29 axle sleeves；30 eccentric bushing II；31 circlips for shaft；32 eccentric bushing I；
33 circlips for shaft.
Detailed description of the invention
Accompanying drawing discloses the concrete structure of a kind of embodiment of this utility model without limitation, and below in conjunction with accompanying drawing, the utility model will be further described.
One shown in Fig. 1～Fig. 3 is without two grades of cycloid cone tooth decelerators of return difference.Power is inputted by power shaft 1, and owing to power shaft 1 is connected with eccentric bushing I32 by interference fit, therefore power shaft 1 drives eccentric bushing I32 rotation together, and drives change gear of conical cycloid wheel I7 to make revolution motion by the rotary arm bearing I5 on eccentric bushing I32.Change gear of conical cycloid wheel I7 engages with cone tooth set I9, is done low speed rotation by counter pushing away, thus completing first order deceleration transmission.Level trough, vertical channel on the left and right end face of cross plate 12 constitute Meshing Pair by the level trough in first and second steel ball group 11,13 and change gear of conical cycloid wheel II17 right side, the vertical channel on change gear of conical cycloid wheel I7 left side, cross plate is made to pass through about steel ball and level trough, the engaging of vertical slots, sliding up and down, thus forming floating type steel ball constant speed unit.Change gear of conical cycloid wheel I7 spinning motion after the first order is slowed down takes turns II17 by floating type steel ball constant speed unit constant-speed transmission to change gear of conical cycloid.Change gear of conical cycloid wheel II17 engages with cone tooth set II15, promotes output shaft 24 to rotate with less angular velocity, thus completing second level deceleration transmission.
In this example, in the left end of casing 14, hole machined has screw thread, is screwed into pre-load nut 21 and promotes shafting components to move axially, and can eliminate the backlash between change gear of conical cycloid wheel and cone tooth set and cone tank and first and second steel ball group 11,13, it is ensured that transmission accuracy.Meanwhile, stop washer 22 is installed between pre-load nut 21 and casing 14, it is prevented that pre-load nut 21 produces to loosen.Power shaft 1 adopts right block bearing 2 twin fixed guide-vane, the supporting structure that left block bearing 28 is travelling, both ensure that the location of shafting components, and what can meet again elimination backlash process center shafting part moves axially requirement.
Claims (5)
- null1. bore tooth decelerators without two grades of cycloids of return difference for one kind，Including power shaft (1)、Power shaft end cap (3)、End cap (6)、Rotary arm bearing I(5)、Change gear of conical cycloid wheel I(7)、Pin I(8)、Cone tooth set I(9)、Eccentric bushing I(32)、First steel ball group (11)、Cross plate (12)、Second steel ball group (13)、Cone tooth set II(15)、Pin II(16)、Change gear of conical cycloid wheel II(17)、Rotary arm bearing II(18)、Eccentric bushing II(30)、Axle sleeve (29)、Pre-load nut (21)、Output shaft end cap (23)、Output shaft (24)、Casing (14)，It is characterized in that: power shaft (1) is by interference fit and eccentric bushing I(32) it is connected，And by rotary arm bearing I(5) take turns I(7 with change gear of conical cycloid) be connected；Power shaft (1) is also by interference fit and eccentric bushing II(30) it is connected, and by rotary arm bearing II(18) take turns II(17 with change gear of conical cycloid) be connected, eccentric bushing I(32) with eccentric bushing II(30) eccentric throw equal and be arranged symmetrically with in 180 °, cross plate (12) change gear of conical cycloid take turns I(7) with change gear of conical cycloid wheel II(17) between floating, the right-hand member of output shaft (24) is flange plate structure, and end cap (6) is connected with casing (14) by screw group (10).
- 2. according to claim 1 a kind of without two grades of cycloid cone tooth decelerators of return difference, it is characterized in that: described change gear of conical cycloid wheel I(7) wheel rim be the epicycloid profile having certain taper, the left side of end cap (6) is provided with pin I(8), pin I(8) upper installation cone tooth set I(9), cone tooth set I(9) tapering and change gear of conical cycloid wheel I(7) wheel rim tapering identical, constitute first order deceleration transmission Meshing Pair, change gear of conical cycloid wheel II(17) wheel rim be also the epicycloid profile having certain taper, output shaft (24) right side is provided with pin II(16), pin II(16) upper installation cone tooth set II(15), cone tooth set II(15) tapering and change gear of conical cycloid wheel II(17) wheel rim tapering identical, constitute second level deceleration transmission Meshing Pair.
- 3. according to claim 1 a kind of without two grades of cycloid cone tooth decelerators of return difference, it is characterized in that: described change gear of conical cycloid wheel I(7) left side on processing have the vertical channel of one group of tapered cross-section, on cross plate (12) right side, also processing has the vertical channel of one group of same size tapered cross-section, first steel ball group (11) of activity is installed between two groups of vertical channel, change gear of conical cycloid wheel II(17) right side processing has the level trough of one group of tapered cross-section, cross plate (12) left side also processes the level trough of one group of same size tapered cross-section, second steel ball group (13) of activity is installed between two groups of level troughs.
- 4. according to claim 1 a kind of without two grades of cycloid cone tooth decelerators of return difference, it is characterized in that: described power shaft (1) right block bearing (2) adopts Internal and external cycle axial restraint mode, power shaft (1) left block bearing (28) adopts inner ring axial restraint, outer ring play mode.
- 5. according to claim 1 a kind of without two grades of cycloid cone tooth decelerators of return difference, it is characterized in that: in described casing (14) left end, hole machined has screw thread, it is screwed into the left block bearing (20) of the fixing output shaft (24) of pre-load nut (21), stop washer (22) is installed between pre-load nut (21) and casing (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620002300.8U CN205371517U (en) | 2016-03-09 | 2016-03-09 | No return difference second grade cycloid awl tooth reduction gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620002300.8U CN205371517U (en) | 2016-03-09 | 2016-03-09 | No return difference second grade cycloid awl tooth reduction gear |
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| Publication Number | Publication Date |
|---|---|
| CN205371517U true CN205371517U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620002300.8U Active CN205371517U (en) | 2016-03-09 | 2016-03-09 | No return difference second grade cycloid awl tooth reduction gear |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508542A (en) * | 2016-03-09 | 2016-04-20 | 江苏泰隆减速机股份有限公司 | Return-difference-free two-stage cycloidal cone gear speed reducer |
| WO2019120035A1 (en) * | 2017-12-22 | 2019-06-27 | 深圳新创技术研究有限公司 | Rolling cycloid planetary transmission mechanism |
| CN111120298A (en) * | 2019-12-16 | 2020-05-08 | 徐海英 | Pump based on eccentric transmission |
-
2016
- 2016-03-09 CN CN201620002300.8U patent/CN205371517U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508542A (en) * | 2016-03-09 | 2016-04-20 | 江苏泰隆减速机股份有限公司 | Return-difference-free two-stage cycloidal cone gear speed reducer |
| WO2019120035A1 (en) * | 2017-12-22 | 2019-06-27 | 深圳新创技术研究有限公司 | Rolling cycloid planetary transmission mechanism |
| CN111120298A (en) * | 2019-12-16 | 2020-05-08 | 徐海英 | Pump based on eccentric transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170823 Address after: 243000 Anhui city of Ma'anshan Province Yu Shan Economic Development Zone Industrial Park 6 building intelligent equipment Patentee after: Anhui Czech wire drive technology Co., Ltd. Address before: 225400 Daqing East Road, Taizhou, Jiangsu, No. 88 Patentee before: Tailong Decelerating Machine Co., Ltd., Jiangsu |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180404 Address after: 225400 No. 88 East Daqing Road, Jiangsu, Taixing Patentee after: Tailong Decelerating Machine Co., Ltd., Jiangsu Address before: 243000 Anhui city of Ma'anshan Province Yu Shan Economic Development Zone Industrial Park 6 building intelligent equipment Patentee before: Anhui Czech wire drive technology Co., Ltd. |
|
| TR01 | Transfer of patent right |