CN110374991A - A kind of double wave line ball speed reduction bearing that running accuracy is high - Google Patents
A kind of double wave line ball speed reduction bearing that running accuracy is high Download PDFInfo
- Publication number
- CN110374991A CN110374991A CN201910759700.1A CN201910759700A CN110374991A CN 110374991 A CN110374991 A CN 110374991A CN 201910759700 A CN201910759700 A CN 201910759700A CN 110374991 A CN110374991 A CN 110374991A
- Authority
- CN
- China
- Prior art keywords
- shell
- ball
- groove
- annular
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 11
- 230000033001 locomotion Effects 0.000 claims description 15
- 238000005096 rolling process Methods 0.000 claims description 7
- 230000006866 deterioration Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000004323 axial length Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
- F16H2001/323—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear comprising eccentric crankshafts driving or driven by a gearing
Abstract
The invention discloses a kind of double wave line ball speed reduction bearing that running accuracy is high, including input shaft, the input shaft includes the first mounting portion, eccentric part and the second mounting portion sequentially connected along axial direction；The peripheral movable sleeve of first mounting portion is equipped with first shell；The peripheral movable sleeve of the recessing groove for forming annular of first shell, eccentric part is equipped with drive disk, and the drive disk is located in recessing groove；The drive disk is equipped with ball bearing mechanism between the inner face of the recessing groove；The peripheral movable sleeve of second mounting portion is equipped with second shell, the second shell forms hypocycloid slot, the drive disk forms epicycloid groove, and the wave number of the hypocycloid slot is greater than the wave number of epicycloid groove, several first balls are distributed between the hypocycloid slot and epicycloid groove；The present invention is intended to provide one kind is able to ascend reduction ratio, deterioration is reduced, error is small, and ratio error is small, while the double wave line ball speed reduction bearing for having the running accuracy of a variety of way of outputs high.
Description
Technical field
The present invention relates to speed reduction bearing field more particularly to a kind of double wave line ball speed reduction bearings that running accuracy is high.
Background technique
In mechanical equipment production process, needs to be adjusted by rotation speed ratio of the retarder to two-stage, higher level is set
Standby high-speed rotation is slowed down, to obtain biggish torque.Existing speed reduction bearing is generally by the way of gear engagement
It is driven, decelerating effect is realized by the tooth difference generated between gear and gear.With the raising of the degree of automation, same
In production line, it is often necessary to multiple speed reduction bearings are used, and use the speed reduction bearing of gear engagement, in transmission process,
Sliding friction between gear and gear will cause great mechanical loss, when the speed reduction bearing of a certain link generates failure,
It is easy to influence the production efficiency of the entire production line.
Summary of the invention
It is an object of the invention to propose that one kind is able to ascend reduction ratio, deterioration is reduced, error is small, and transmission ratio misses
Difference double wave line ball speed reduction bearing that is small, while having the running accuracy of a variety of way of outputs high.
To achieve this purpose, the present invention adopts the following technical scheme: a kind of double wave line ball speed reduction bearing that running accuracy is high,
Including input shaft, the input shaft includes the first mounting portion, eccentric part and the second mounting portion sequentially connected along axial direction；Described
The peripheral movable sleeve of one mounting portion is equipped with first shell, and one end close to the eccentric part of the first shell extends to described
The periphery of eccentric part；The recessing groove that annular is formed in the middle part of one end of the eccentric part of the first shell, it is described
The peripheral movable sleeve of eccentric part is equipped with drive disk, and the drive disk is located in the recessing groove, and the eccentric part drives the drive
Moving plate does eccentric motion in the recessing groove；One end of the close first shell of the drive disk and the recessing groove
Ball bearing mechanism is equipped between inner face；The peripheral movable sleeve of second mounting portion is equipped with second shell, the second shell
One end opposite with the drive disk forms hypocycloid slot, one end molding opposite with the second shell of the drive disk
There is epicycloid groove, the wave number of the hypocycloid slot is greater than the wave number of the epicycloid groove, the hypocycloid slot and the epicycloid
Several first balls are distributed between slot；The first shell is sequentially connected with first annular shell along axial direction and the second annular is outer
Shell, the first annular shell and second annular outer cover are movably set in the periphery of the second shell, first ring
It is equipped with the holding tank of annular between shape shell, second annular outer cover and the second shell, is equipped with and hands in the holding tank
Pitch roller mechanism.
Preferably, the hypocycloid slot includes several towards curved first arc groove in the inside of the second shell, if
Dry first arc groove circumferentially sequentially connects into ring-shaped from beginning to end, and the inner bottom surface of first arc groove is arc groove
Structure；The epicycloid groove includes several towards curved second arc groove in the outside of the drive disk, several described second
Arc groove circumferentially sequentially connects into ring-shaped from beginning to end, and the inner bottom surface of second arc groove is curved groove structure；Described
The number of one arc groove is greater than the number of second arc groove.
Preferably, the number of first arc groove is N+2, and the number of second arc groove is N, first ball
Number be N+1, N is integer greater than zero.
Preferably, several first ball grooves are distributed in one end close to the first shell of the drive disk, described to allow
Several and one-to-one second ball grooves of first ball grooves are distributed in the inner face of position slot, if the ball bearing mechanism includes
Dry the second ball being correspondingly arranged between first ball grooves and second ball grooves；First ball grooves are first
Ball crown type structure, the diameter of a circle where the first ball crown type structure are greater than the diameter of second ball；Second ball
Slot is the second ball crown type structure, and the diameter of a circle where the second ball crown type structure is greater than the diameter of second ball；It is described
The sum of height and the height of the second ball crown type structure of first ball crown type structure are less than the diameter of second ball.
Preferably, the outer wall of the second shell circumferentially arranged with annular the first mounting groove, first mounting groove
Radial section is L-type structure, and right angle one end of the L-type structure is towards the middle part of the second shell；The first annular shell
Inner face circumferentially arranged with first annular notch, the first annular notch is towards second annular outer cover；Described second
The inner face of annular outer cover is circumferentially arranged with the second annular notch, and the described second annular notch is towards the first annular shell；
The radial section of the first annular notch and the radial section of the described second annular notch are perpendicular；The holding tank is by first
The annular notch of mounting groove, first annular notch and second cooperatively forms, and the radial section of the holding tank is rectangular configuration.
Preferably, the crossed roller mechanism includes the first roller, the second roller, stop collar and limit hole, the limit
Hole is provided with multiple and is uniformly distributed circumferentially side wall in the stop collar；The stop collar is set in the outer of the first mounting groove
It encloses, the limit hole is located at the middle part of the holding tank；First roller is provided with multiple, and second roller is provided with more
A, multiple first rollers and multiple second rollers are staggered in multiple limit holes, first roller
Central axes and the central axes of second roller be mutually perpendicular to, the both ends of first roller respectively with the holding tank its
In two opposite inner walls it is parallel, the both ends of second roller are equal with other two opposite inner walls of the holding tank respectively
Row.
Preferably, collar is formed between first mounting portion and the eccentric part.
Preferably, first bearing is equipped between first mounting portion and the first shell.
Preferably, second bearing is equipped between the eccentric part and the drive disk.
Preferably, 3rd bearing is equipped between second mounting portion and the second shell.
The present invention using the above structure, by eccentric part, drive disk, the first cycloid groove, the second cycloid groove, the first ball and
Second shell cooperation, realizes deceleration transmission, improves the reduction ratio of bearing；Drive disk, ball bearing mechanism and first shell cooperation are released
The wobbler action for putting eccentric part, makes bearing have stable drive mechanism, and rolling friction loss is small；Using the first ball and second
The rolling kind of drive of ball, frictional dissipation is small, and transmission efficiency is high, and ratio error is small, the applicable higher situation of revolving speed；The
One annular outer cover, the second annular outer cover, second shell and the cooperation of crossed roller mechanism, make bearing running accuracy with higher.
Improve the adaptability of speed reduction bearing by two kinds of way of outputs, one, pass through fixed first shell, first annular shell
With the second annular outer cover, make input shaft as power intake, second shell is as power output end, the first cycloid groove, first
Ball and the cooperation of the second cycloid groove reach good slowing effect；Two, by fixed second shell, keep input shaft defeated as power
Enter end, first shell, first annular shell and the second annular outer cover make the output of opposite direction as power output end.
Detailed description of the invention
The present invention will be further described for attached drawing, but the content in attached drawing does not constitute any limitation of the invention.
Fig. 1 is schematic perspective view of the invention；
Fig. 2 is side structure schematic view of the invention；
Fig. 3 is schematic cross-sectional view of the Fig. 2 along A-A；
Fig. 4 is the partial enlargement diagram in Fig. 3 at B；
Fig. 5 is the structural schematic diagram of dismounting first annular shell and the second annular outer cover of the invention；
Fig. 6 is the overlooking structure diagram of first shell in the present invention；
Fig. 7 is the schematic perspective view of first annular shell, the second annular outer cover and second shell in the present invention；
Fig. 8 is the schematic perspective view of first shell in the present invention, drive disk and input shaft；
Fig. 9 is the schematic perspective view of drive disk and input shaft in the present invention.
Wherein: input shaft 1, eccentric part 1b, the second mounting portion 1c, collar 1d, first shell 2, is stepped down at first mounting portion 1a
Slot 2a, the second ball grooves 2b, drive disk 3, the first ball grooves 3a, ball bearing mechanism 4, the second ball 4a, second shell 5, first are pacified
Tankage 5a, hypocycloid slot 6, the first arc groove 6a, epicycloid groove 7, the second arc groove 7a, the first ball 8, first annular shell 9,
First annular notch 9a, second the 10, second annular notch 10a of annular outer cover, crossed roller mechanism 11, the first roller 11a, second
Roller 11b, stop collar 11c, limit hole 11d, first bearing 12, second bearing 13,3rd bearing 14.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
Referring to FIG. 1 to 9, the high double wave line ball speed reduction bearing of a kind of running accuracy of the present embodiment, including it is defeated
Enter axis 1, the input shaft 1 includes the first mounting portion 1a, the eccentric part 1b and the second mounting portion 1c sequentially connected along axial direction.
The peripheral movable sleeve of the first mounting portion 1a is equipped with first shell 2, the close bias of the first shell 2
One end of portion 1b extends to the periphery of the eccentric part 1b.
The recessing groove 2a that annular is formed in the middle part of one end of the eccentric part 1b of the first shell 2, it is described
The peripheral movable sleeve of eccentric part 1b is equipped with drive disk 3, and the drive disk 3 is located in the recessing groove 2a, the eccentric part 1b band
It moves the drive disk 3 and does eccentric motion in the recessing groove 2a.
The drive disk 3 is equipped with rolling between one end of the first shell 2 and the inner face of the recessing groove 2a
Pearl mechanism 4.
The peripheral movable sleeve of the second mounting portion 1c be equipped with second shell 5, the second shell 5 with the drive disk
3 opposite one end form hypocycloid slot 6, and one end opposite with the second shell 5 of the drive disk 3 forms epicycloid
Slot 7, the wave number of the hypocycloid slot 6 are greater than the wave number of the epicycloid groove 7, the hypocycloid slot 6 and the epicycloid groove 7 it
Between several first balls 8 are distributed with.
The first shell 2 is sequentially connected with first annular shell 9 and the second annular outer cover 10, first ring along axial direction
Shape shell 9 and second annular outer cover 10 are movably set in the periphery of the second shell 5, the first annular shell 9, institute
The holding tank for being equipped with annular between the second annular outer cover 10 and the second shell 5 is stated, is equipped with crossed roller in the holding tank
Mechanism 11.
Using this structure, the input shaft 1 is connect with external driver device, the first shell 2, first annular shell
9 and second annular outer cover 10 when being fixedly connected with external rack, the input shaft 1 is used as power intake, the second shell
Body 5 is connect as power output end with external attachment device.The input shaft 1 drives eccentric part 1b rotation, eccentric part 1b band
Dynamic drive disk 3 does eccentric motion in recessing groove 2a, and ball bearing mechanism 4 is used to discharge the eccentric motion of drive disk 3, reduces sliding and rubs
It wipes, reduces loss.The hypocycloid slot 6, the first ball 8 and the cooperation of epicycloid groove 7 are realized and roll passing movement, and hypocycloid is utilized
Slot 6 and epicycloid groove 7 generate poor tooth movement, reduce the revolving speed of second shell 5, realize the decelerating effect of bearing, improve biography
Efficiency of movement improves reduction ratio, reduces deterioration, and error is small, and ratio error is small.
The second shell 5 is fixedly connected with external rack, and when input shaft 1 is connect with external driver device, input shaft 1 is made
For power intake, first annular shell 9, the second annular outer cover 10 and first shell 2 are used as power output end.The input shaft
1 drives eccentric part 1b rotation, and since second shell 5 is fixed, the first ball 8, drive disk 3 and the cooperation of ball bearing mechanism 4 make first shell
Body 2, first annular shell 9 and the second annular outer cover 10 generate the rotary motion opposite with the direction of rotation of input shaft 1, pass through by
Second annular outer cover 10 or first shell 2 are connect with external attachment device, and the output of opposite direction can be realized.
Eliminate traditional cross dish structure, simplify the structure of speed reduction bearing more, can processing and fabricating go out smaller ruler
Very little speed reduction bearing.
Crossed roller mechanism 11 is set between first annular shell 9, the second annular outer cover 10 and second shell 5, makes axis
It holds with outstanding running accuracy, bearing is made to be able to bear biggish axially and radially load, save installation space, reduce axial length
Degree and processing cost.
Refering to shown in Fig. 3, Fig. 7 and Fig. 8, the hypocycloid slot 6 includes several interior lateral bends towards the second shell 5
The first arc groove 6a, several described first arc groove 6a circumferentially sequentially connect into ring-shaped, first arc from beginning to end
The inner bottom surface of slot 6a is curved groove structure；The epicycloid groove 7 includes several towards the outside of the drive disk 3 curved the
Two arc groove 7a, several described second arc groove 7a circumferentially sequentially connect into ring-shaped, the second arc groove 7a from beginning to end
Inner bottom surface be curved groove structure；The number of the first arc groove 6a is greater than the number of the second arc groove 7a.
Using this structure, the hypocycloid slot 6 circularized by the 6a connection of several first arc grooves, several second arcs
The first ball 8 is clamped in the epicycloid groove 7 that the 7a connection of shape slot circularizes, hypocycloid slot 6 and the cooperation of epicycloid groove 7, facilitates the first rolling
Pearl 8 rolls transmission in interior cycloid groove 6 and epicycloid groove 7, and sliding friction is converted to rolling friction, reduces drive disk 3 and the
Frictional dissipation between two shells 5, while being able to carry out good transmission effect.
The eccentric distance between eccentric part 1b and input shaft 1 is set as a, section diameter of a circle is b, the profile of hypocycloid slot 6
It is that an amplitude is a and is inscribed in the loop wire for the circle that pitch diameter is b, the profile of epicycloid groove 7 is that an amplitude is a and external
In the loop wire for the circle that pitch diameter is b.
Preferably, the number of the first arc groove 6a is N+2, and the number of the second arc groove 7a is N, described first
The number of ball 8 is N+1, and N is the integer greater than zero.
Using this structure, using 6a, N+1 the first balls 8 of N+2 the first arc groove, N number of second arc groove 7a's is set
Mode is set, so that the first arc groove 6a, the first ball 8 and the second arc groove 7a cooperation is generated poor tooth movement, reaches deceleration transmission
Purpose, meanwhile, N+1 ball can guarantee to keep good transmission effect between drive disk 3 and second shell 5, avoid generating
Drive gap causes the stuck or inflexible phenomenon of rotation.
Refering to shown in Fig. 3 and Fig. 9, several first rollings are distributed in one end close to the first shell 2 of the drive disk 3
Several and one-to-one second ball grooves of the first ball grooves 3a are distributed in pearl slot 3a, the inner face of the recessing groove 2a
2b, the ball bearing mechanism 4 include several be correspondingly arranged between the first ball grooves 3a and the second ball grooves 2b the
Two ball 4a.
The first ball grooves 3a is the first ball crown type structure, and the diameter of a circle where the first ball crown type structure is greater than institute
State the diameter of the second ball 4a；The second ball grooves 2b is the second ball crown type structure, the circle where the second ball crown type structure
Diameter be greater than the second ball 4a diameter；The height of the first ball crown type structure and the height of the second ball crown type structure
The sum of be less than the second ball 4a diameter.
Using this structure, the second ball 4a is clamped in the first ball grooves 3a and the second ball grooves 2b cooperation, drive disk 3 and the
Transmission is rolled by the second ball 4a between one shell 2, the second ball 4a is rolled in transmission process, discharges the bias of drive disk 3
Effect.
The structure and the second ball of diameter of the diameter of a circle greater than the second ball 4a where first ball crown type structure
The structure of diameter of the diameter of a circle greater than the second ball 4a where crown structure, the first ball grooves 3a and the second ball grooves
2b provides enough biased spaces for the second ball 4a, and the second ball 4a is enable to discharge the wobbler action of eccentric part 1b；It is described
The sum of height and the height of the second ball crown type structure of first ball crown type structure are less than the diameter of the second ball 4a, can keep away
Free drive Moving plate 3 and the contact of first shell 2 generate sliding friction, reduce frictional dissipation.
Transmission efficiency with higher is cooperated using the second ball 4a, the first ball grooves 3a and the second ball grooves 2b, it can
It is effectively reduced the frictional force of transmission process, improves machine power.
Refering to shown in Fig. 3 and Fig. 4, the outer wall of the second shell 5 circumferentially arranged with annular the first mounting groove 5a, it is described
The radial section of first mounting groove 5a is L-type structure, and right angle one end of the L-type structure is towards the middle part of the second shell 5.
The inner face of the first annular shell 9 is circumferentially arranged with first annular notch 9a, the first annular notch 9a
Towards second annular outer cover 10；The inner face of second annular outer cover 10 is circumferentially arranged with the second annular notch 10a, institute
The second annular notch 10a is stated towards the first annular shell 9；The radial section and described second of the first annular notch 9a
The radial section of annular notch 10a is perpendicular.
The holding tank is cooperatively formed by the first mounting groove 5a, first annular notch 9a and the second annular notch 10a, described
The radial section of holding tank is rectangular configuration.
Using this structure, the first mounting groove 5a, first annular notch 9a and the second annular notch 10a are cooperatively formed
Holding tank facilitates the installation of crossed roller mechanism 11, and an end face of the first mounting groove 5a is parallel with first annular notch 9a, hands over
The part roller of fork roller mechanism 11 is folded between an end face of the first mounting groove 5a and first annular notch 9a, the first installation
The other end of slot 5a is parallel with the second annular notch 10a, and another part roller of crossed roller mechanism 11 is folded in first
Between the other end of mounting groove 5a and the second annular notch 10a, bearing is made to be able to bear biggish axially and radially load.
As shown in fig.5, the crossed roller mechanism 11 include the first roller 11a, the second roller 11b, stop collar 11c and
Limit hole 11d, the limit hole 11d are provided with multiple and are uniformly distributed circumferentially side wall in the stop collar 11c；The limit
Position ring 11c is set in the periphery of the first mounting groove 5a, and the limit hole 11d is located at the middle part of the holding tank.
The first roller 11a is provided with multiple, and the second roller 11b is provided with multiple, multiple first rollers
11a and multiple second roller 11b are staggered in multiple limit hole 11d, the central axes of the first roller 11a
Be mutually perpendicular to the central axes of the second roller 11b, the both ends of the first roller 11a respectively with the holding tank wherein
Two opposite inner walls are parallel, the both ends of the second roller 11b respectively with other two opposite inner wall phases of the holding tank
In parallel.
Using this structure, the first roller 11a and the second roller 11b is separated by stop collar 11c and holding tank cooperation,
It avoids the first roller 11a and the second roller 11b from contacting with each other and accelerate to wear, improves the output stability of second shell 5, have
Good running accuracy, first annular shell 9, the second annular outer cover 10, crossed roller mechanism 11 and the cooperation of second shell 5 make axis
It holds and is able to bear biggish axially and radially load.
As shown in fig.3, it is preferred, collar 1d is formed between the first mounting portion 1a and the eccentric part 1b.
Using this structure, collar 1d, which is arranged, can facilitate the positioning of input shaft 1.
Preferably, first bearing 12 is equipped between the first mounting portion 1a and the first shell 2.
Using this structure, first bearing 12, which is arranged, can make holding activity between the first mounting portion 1a and first shell 2
Connection.
Preferably, second bearing 13 is equipped between the eccentric part 1b and the drive disk 3.
Using this structure, second bearing 13, which is arranged, can make to keep being flexibly connected between eccentric part 1b and drive disk 3.
Preferably, 3rd bearing 14 is equipped between the second mounting portion 1c and the second shell 5.
Using this structure, 3rd bearing 14, which is arranged, can make holding activity between the second mounting portion 1c and second shell 5
Connection.
When work, the input shaft 1 is connect with external driver device, the first shell 2, first annular shell 9 and
Second ring shell 10 is fixedly connected with external rack, and the input shaft 1 is used as power intake, 5 conduct of second shell
Power output end is connect with external attachment device.The input shaft 1 drives eccentric part 1b rotation, and eccentric part 1b drives drive disk
3 do eccentric motion in recessing groove 2a, and ball bearing mechanism 4 is used to discharge the eccentric motion of drive disk 3, reduces sliding friction, reduce
Loss.The hypocycloid slot 6, the first ball 8 and the cooperation of epicycloid groove 7 are realized and roll passing movement, using hypocycloid slot 6 and outside
Cycloid groove 7 generates poor tooth movement, reduces the revolving speed of second shell 5, realizes the decelerating effect of bearing, improve transmission efficiency,
Reduction ratio is improved, deterioration is reduced, error is small, and ratio error is small.
The second shell 5 is fixedly connected with external rack, and input shaft 1 is connect with external driver device, 1 conduct of input shaft
Power intake, first annular shell 9, the second annular outer cover 10 and first shell 2 are used as power output end.The input shaft 1
Eccentric part 1b rotation is driven, since second shell 5 is fixed, the first ball 8, drive disk 3 and the cooperation of ball bearing mechanism 4 make first shell
2, first annular shell 9 and the second annular outer cover 10 generate the rotary motion opposite with the direction of rotation of input shaft 1, by by the
Second ring shell 10 or first shell 2 are connect with external attachment device, and the output of opposite direction can be realized.
The technical principle of the invention is described above in combination with a specific embodiment.These descriptions are intended merely to explain of the invention
Principle, and shall not be construed in any way as a limitation of the scope of protection of the invention.Based on the explanation herein, the technology of this field
Personnel can associate with other specific embodiments of the invention without creative labor, these modes are fallen within
Within protection scope of the present invention.
Claims (10)
1. a kind of double wave line ball speed reduction bearing that running accuracy is high, including input shaft, which is characterized in that the input shaft includes
The first mounting portion, eccentric part and the second mounting portion sequentially connected along axial direction；
The peripheral movable sleeve of first mounting portion is equipped with first shell, one end close to the eccentric part of the first shell
Extend to the periphery of the eccentric part；
The recessing groove that annular is formed in the middle part of one end of the eccentric part of the first shell, the eccentric part it is outer
Movable sleeve is enclosed equipped with drive disk, and the drive disk is located in the recessing groove, and the eccentric part drives the drive disk described
Eccentric motion is done in recessing groove；
The drive disk is equipped with ball bearing mechanism between one end of the first shell and the inner face of the recessing groove；
The peripheral movable sleeve of second mounting portion is equipped with second shell, one opposite with the drive disk of the second shell
End forms hypocycloid slot, and one end opposite with the second shell of the drive disk forms epicycloid groove, the interior pendulum
The wave number of wire casing is greater than the wave number of the epicycloid groove, is distributed with several first between the hypocycloid slot and the epicycloid groove
Ball；
The first shell is sequentially connected with first annular shell and the second annular outer cover along axial direction, the first annular shell and
Second annular outer cover is movably set in the periphery of the second shell, and the first annular shell, second annular are outer
It is equipped with the holding tank of annular between shell and the second shell, is equipped with crossed roller mechanism in the holding tank.
2. a kind of high double wave line ball speed reduction bearing of running accuracy according to claim 1, which is characterized in that in described
Cycloid groove includes several towards curved first arc groove in the inside of the second shell, several described first arc grooves are along week
To ring-shaped is sequentially connected into from beginning to end, the inner bottom surface of first arc groove is curved groove structure；The epicycloid groove includes
Several circumferentially sequentially connect from beginning to end towards curved second arc groove in the outside of the drive disk, several described second arc grooves
It is connected into ring-shaped, the inner bottom surface of second arc groove is curved groove structure；The number of first arc groove is greater than described
The number of second arc groove.
3. a kind of high double wave line ball speed reduction bearing of running accuracy according to claim 2, which is characterized in that described
The number of one arc groove is N+2, and the number of second arc groove is N, and the number of first ball is N+1, and N is greater than zero
Integer.
4. a kind of high double wave line ball speed reduction bearing of running accuracy according to claim 1, which is characterized in that the drive
Several first ball grooves are distributed in one end close to the first shell of Moving plate, and the inner face of the recessing groove is distributed with several
With one-to-one second ball grooves of first ball grooves, the ball bearing mechanism includes that several are correspondingly arranged at first rolling
The second ball between pearl slot and second ball grooves；
First ball grooves are the first ball crown type structure, and the diameter of a circle where the first ball crown type structure is greater than described second
The diameter of ball；Second ball grooves are the second ball crown type structure, and the diameter of a circle where the second ball crown type structure is greater than
The diameter of second ball；The sum of height and the height of the second ball crown type structure of the first ball crown type structure are less than described
The diameter of second ball.
5. a kind of high double wave line ball speed reduction bearing of running accuracy according to claim 1, which is characterized in that described
For the outer wall of two shells circumferentially arranged with the first mounting groove of annular, the radial section of first mounting groove is L-type structure, the L
Right angle one end of type structure is towards the middle part of the second shell；
The inner face of the first annular shell is circumferentially arranged with first annular notch, and the first annular notch is towards described
Second ring shell；The inner face of second annular outer cover is circumferentially arranged with the second annular notch, the described second annular notch court
To the first annular shell；The radial section of the first annular notch and the radial section of the described second annular notch mutually hang down
Directly；
The holding tank is cooperatively formed by the annular notch of the first mounting groove, first annular notch and second, the diameter of the holding tank
It is rectangular configuration to section.
6. a kind of high double wave line ball speed reduction bearing of running accuracy according to claim 5, which is characterized in that the friendship
Pitching roller mechanism includes the first roller, the second roller, stop collar and limit hole, and the limit hole is provided with multiple and circumferentially equal
The even side wall for being distributed in the stop collar；The stop collar is set in the periphery of the first mounting groove, and the limit hole is located at described
The middle part of holding tank；
First roller is provided with multiple, and second roller is provided with multiple, multiple first rollers and multiple described
Second roller is staggered in multiple limit holes, the central axes of the central axes of first roller and second roller
It being mutually perpendicular to, the both ends of first roller are parallel with wherein two opposite inner walls of the holding tank respectively, and described second
The both ends of roller are parallel with other two opposite inner walls of the holding tank respectively.
7. a kind of high double wave line ball speed reduction bearing of running accuracy according to claim 1, which is characterized in that described
Collar is formed between one mounting portion and the eccentric part.
8. a kind of high double wave line ball speed reduction bearing of running accuracy according to claim 1, which is characterized in that described
First bearing is equipped between one mounting portion and the first shell.
9. a kind of high double wave line ball speed reduction bearing of running accuracy according to claim 1, which is characterized in that described inclined
Second bearing is equipped between center portion and the drive disk.
10. a kind of high double wave line ball speed reduction bearing of running accuracy according to claim 1, which is characterized in that described
3rd bearing is equipped between second mounting portion and the second shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910759700.1A CN110374991B (en) | 2019-08-16 | 2019-08-16 | Double-wave-line ball speed reducing bearing with high rotation precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910759700.1A CN110374991B (en) | 2019-08-16 | 2019-08-16 | Double-wave-line ball speed reducing bearing with high rotation precision |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110374991A true CN110374991A (en) | 2019-10-25 |
| CN110374991B CN110374991B (en) | 2024-03-26 |
Family
ID=68259703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910759700.1A Active CN110374991B (en) | 2019-08-16 | 2019-08-16 | Double-wave-line ball speed reducing bearing with high rotation precision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110374991B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120586A (en) * | 2020-01-06 | 2020-05-08 | 河南烛龙高科技术有限公司 | Closed undercut cycloid oscillating tooth reduction gear of doublestage |
| CN111173895A (en) * | 2020-01-06 | 2020-05-19 | 河南烛龙高科技术有限公司 | Two-stage closed type undercut cycloid oscillating tooth transmission unit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002206546A (en) * | 2000-11-10 | 2002-07-26 | Nsk Ltd | Needle bearing |
| KR20050112682A (en) * | 2004-05-27 | 2005-12-01 | 주식회사 해성산전 | A high degree of efficiency and hardness inscribed toothed wheel using cycloid tooth type |
| JP2015132359A (en) * | 2014-01-15 | 2015-07-23 | 有限会社ファインメック | Speed reducer |
| WO2016204220A1 (en) * | 2015-06-18 | 2016-12-22 | Ntn株式会社 | Tapered roller bearing and planet bearing device |
| KR20170024874A (en) * | 2015-08-26 | 2017-03-08 | 경일대학교산학협력단 | Apparatus for opening/closing floodgate |
| CN109538706A (en) * | 2018-12-29 | 2019-03-29 | 王小三 | A kind of helical teeth planetary gear ball Combined speed reducer |
| CN210461387U (en) * | 2019-08-16 | 2020-05-05 | 佛山市力普鑫精密技术有限公司 | Double-wave-line ball reduction bearing with high rotation precision |
-
2019
- 2019-08-16 CN CN201910759700.1A patent/CN110374991B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002206546A (en) * | 2000-11-10 | 2002-07-26 | Nsk Ltd | Needle bearing |
| KR20050112682A (en) * | 2004-05-27 | 2005-12-01 | 주식회사 해성산전 | A high degree of efficiency and hardness inscribed toothed wheel using cycloid tooth type |
| JP2015132359A (en) * | 2014-01-15 | 2015-07-23 | 有限会社ファインメック | Speed reducer |
| WO2016204220A1 (en) * | 2015-06-18 | 2016-12-22 | Ntn株式会社 | Tapered roller bearing and planet bearing device |
| KR20170024874A (en) * | 2015-08-26 | 2017-03-08 | 경일대학교산학협력단 | Apparatus for opening/closing floodgate |
| CN109538706A (en) * | 2018-12-29 | 2019-03-29 | 王小三 | A kind of helical teeth planetary gear ball Combined speed reducer |
| CN210461387U (en) * | 2019-08-16 | 2020-05-05 | 佛山市力普鑫精密技术有限公司 | Double-wave-line ball reduction bearing with high rotation precision |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120586A (en) * | 2020-01-06 | 2020-05-08 | 河南烛龙高科技术有限公司 | Closed undercut cycloid oscillating tooth reduction gear of doublestage |
| CN111173895A (en) * | 2020-01-06 | 2020-05-19 | 河南烛龙高科技术有限公司 | Two-stage closed type undercut cycloid oscillating tooth transmission unit |
| CN111120586B (en) * | 2020-01-06 | 2021-03-16 | 河南烛龙高科技术有限公司 | Closed undercut cycloid oscillating tooth reduction gear of doublestage |
| CN111173895B (en) * | 2020-01-06 | 2021-05-04 | 河南烛龙高科技术有限公司 | Two-stage closed type undercut cycloid oscillating tooth transmission unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110374991B (en) | 2024-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20140044857A (en) | Internally-toothed gear unit with composite roller bearing, and wave gear device | |
| CN110374991A (en) | A kind of double wave line ball speed reduction bearing that running accuracy is high | |
| CN113309842B (en) | Cycloidal pin gear harmonic speed reducer | |
| CN208089896U (en) | A kind of hard and soft wheel system of new harmonic retarder | |
| CN210461387U (en) | Double-wave-line ball reduction bearing with high rotation precision | |
| CN110374988B (en) | Simple cycloid speed reducing bearing with strong load capacity | |
| CN211343712U (en) | Single cycloid speed reduction bearing with strong load capacity | |
| CN109538706B (en) | Helical gear planet wheel ball combined speed reducer | |
| US6416438B1 (en) | Transmitting unit | |
| CN210769832U (en) | Double-wave-line speed reduction bearing with high bearing capacity | |
| CN110374990A (en) | A kind of unicast line speed reduction bearing of high durability | |
| KR20230129986A (en) | Long acting reducer | |
| CN103047280A (en) | Novel rolling bearing structure | |
| CN110374989A (en) | A kind of double wave line speed reduction bearing of high-bearing capacity | |
| CN211648782U (en) | Single wave line speed reduction bearing of high incorruptibility | |
| CN109340331B (en) | Coaxial speed reducer | |
| CN209212899U (en) | The cascade retarder of balance wheel gear unit | |
| CN110805660A (en) | Differential cycloidal gear speed change device | |
| CN208831596U (en) | A kind of novel bilateral engagement bi-arc bevel gear nutation reducer | |
| CN211009753U (en) | Differential cycloidal gear speed change device | |
| JP5403572B2 (en) | Transmission device for converting rotational motion into linear motion | |
| TWI820817B (en) | Conjugate cam reducer | |
| CN211009751U (en) | Differential cycloidal gear speed change device | |
| CN211259502U (en) | High-efficiency low-loss composite meshing multistage speed increasing mechanism | |
| CN212928684U (en) | Speed reducer and power output equipment with same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |