CN204099511U - A kind of power take-off mechanism of pendulum ball formula speed reducer - Google Patents
A kind of power take-off mechanism of pendulum ball formula speed reducer Download PDFInfo
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- CN204099511U CN204099511U CN201420543406.XU CN201420543406U CN204099511U CN 204099511 U CN204099511 U CN 204099511U CN 201420543406 U CN201420543406 U CN 201420543406U CN 204099511 U CN204099511 U CN 204099511U
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- speed reducer
- ball
- power take
- groove
- support plate
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- Retarders (AREA)
Abstract
The utility model provides a kind of power take-off mechanism of pendulum ball formula speed reducer, and it is connected with housing and is connected on outside transmission shaft by bearing housing, and transmission shaft one end is installed on enclosure interior, and the other end is arranged on input shaft; This mechanism comprises and is connected to support plate outside transmission shaft and output shaft respectively by bearing housing, between the motor area being provided with ball and ball between described support plate and output shaft; The track groove that output shaft end face is arranged and the hole that support plate one side is arranged is referred between described motor area; Described ball is placed in hole; The shell of described output shaft is connected with housing.This power take-off mechanism changes the movement locus of ball, thus improves the transmission performance of ball, and then effectively improves reduction speed ratio and the transmission efficiency of speed reducer; Meanwhile, this mechanism structure is simple and difficulty of processing is little, is conducive to using in gearing industry and promoting.
Description
Technical field
The utility model relates to the technical field that mechanical transmission is slowed down, and more particularly, relates to a kind of power take-off mechanism of speed reducer.
Background technique
In the design of all kinds of gearing, cycloidal planetary gear speed reducer has the advantages such as the large and volume of reduction speed ratio is little and progressively substitutes gear reduction unit and worm decelerating machine, and as to drive or speed reducer is widely used in the conversion equipment of speed and moment of torsion.But because cycloidal planetary gear speed reducer structure is very complicated, requirement on machining accuracy is high, and certain process gap to be left in design and installation process, rotate when causing work not steadily, noise is large and rotational efficienty is low, can not meet the needs of Modern mechanical design development.
In the prior art, utilize ball significantly can simplify transmission link to carry out transmission, thus simplify internal structure, substantially increase reduction speed ratio, moment of torsion and transmission efficiency.Therefore, ball is utilized also to operate to the speed reducer carrying out transmission and give birth to.Ball is utilized all to have housing, input shaft, output shaft, the eccentric shaft be arranged on input shaft, the output disc that is arranged on the eccentric disc outside eccentric shaft and is connected with output shaft so that the speed reducer carrying out transmission is the same with general planet-gear speed reducer.The main feature of this speed reducer is the cycloid engagement driving relation between eccentric disc and output disc is realized by the ball be clamped in two dish end face cycloid raceways.In transmission process, eccentric disc can only can not rotation around input shaft revolution by the restriction of anti-rotation mechanism, and input shaft high speed rotating, by anti-rotation mechanism restriction eccentric disc from then only do translation; Now, eccentric disc and output disc are engaged by ball, and speed is shunted, and the promotion output disc that slows down rotates around output shaft, the output thus output shaft slows down.
The patent No. be 99202368.8 one close pearl Method of Cycloid Steel Ball Reducer disclose a kind of power take-off mechanism, this power take-off mechanism be combined to form retarder using cross sliding board mechanism as anti-rotation mechanism.The hypocycloid raceway of this power take-off mechanism and epicycloid raceway are curtate cyclod list arc raceway or curtate cyclod duplex circular ares profile race, and clip intensive steel ball between hypocycloid raceway and epicycloid raceway.Due to when rotate at a high speed by input for input shaft, the transmission performance of cycloidal ball is decided by the shape of two cycloid orbits, and the intensive steel ball of this patent forms certain phase difference at hypocycloid raceway and epicycloid rolling path rolling, to cancel out each other the rotation angle exported, thus cause the reduction speed ratio of speed reducer to reduce, reduce transmission efficiency.
Model utility content
The purpose of this utility model is to overcome shortcoming of the prior art with not enough, the power take-off mechanism of the pendulum ball formula speed reducer that a kind of structure is simple and difficulty of processing is little is provided, this power take-off mechanism changes the movement locus of ball, thus improve the transmission performance of ball, and then effectively improve reduction speed ratio and the transmission efficiency of speed reducer.
In order to achieve the above object, the utility model is achieved by following technical proposals: a kind of power take-off mechanism of pendulum ball formula speed reducer, be connected with housing and be connected on outside transmission shaft by bearing housing, transmission shaft one end is installed on enclosure interior, and the other end is arranged on input shaft; It is characterized in that: comprise and be connected to support plate outside transmission shaft and output shaft respectively by bearing upper and lower sleeve, between the motor area being provided with ball and ball between described support plate and output shaft; The track groove that output shaft end face is arranged and the hole that support plate one side is arranged is referred between described motor area; Described ball is placed in hole; Be socketed with shell outside described output shaft, shell is connected with housing.
In such scheme, in power take-off mechanism ball motor area between be the combination adopting hole and track groove, relative between the motor area that existing employing hypocycloid raceway and epicycloid raceway two track groove are formed, then there is not the phase difference that ball produces when hypocycloid raceway and epicycloid rolling path rolling, ball can be effectively avoided to cancel out each other when two track groove are rolled the phenomenon of the rotation angle exported, therefore, speed reducer of the present utility model adopts the combination of hole and track groove effectively can improve reduction speed ratio and the transmission efficiency of speed reducer.
Described track groove is cross section is two " U " font grooves.
Described cross section refers in two " U " font groove: " U " font groove is arranged on the bottom of another " U " font groove, and upper and lower two grooves are communicated with and the opening direction of groove is identical.When speed reducer works, ball of the present utility model rolls at upper " U " font groove, and under " U " font groove can be used as oilhole, a certain amount of lubricant oil is deposited in oilhole, ball is lubricated fast in rolling process, thus reduce ball and track groove friction, reduce the mechanical wear of speed reducer.
The groove footpath r of " U " font groove under the groove footpath R > of upper " U " font groove; Groove footpath R and the ball external diameter of described upper " U " font groove match.
Described track groove forms the cycloid with wave number at output shaft end face and closes guide groove.
The wave number of described track groove and the quantity in hole have difference.The wave number of the utility model track groove has certain difference than the quantity in hole, the wave number of track groove can be more than the quantity in hole, or the quantity in hole can be more than the wave number of track groove, design can increase the reduction speed ratio of speed reducer like this, is also conducive to simplification and the processing of machinery.If the wave number of track groove is identical with the quantity in hole, then the position of the ripple of track groove and the location matches in hole corresponding, therefore, ball can not realize carrying out rolling or sliding between motor area, cannot realize engaging of support plate one side and output shaft end face, thus speed reducer can not play the effect of deceleration.
Described hole is the semicircle orifice that aperture and ball external diameter match; The quantity in described hole is equal with the quantity of ball.
Described support plate is ring support plate, and its inner circle is connected to outside transmission shaft by bearing housing.
Described hole is evenly arranged on the toroidal surface of support plate one side, and the hole heart line in each hole forms the concentric circle of annulus.
Described transmission shaft is camshaft or eccentric shaft; Described output shaft is bearing.Camshaft can reduce friction and wear, and passes to the larger power of support plate.
Compared with prior art, the utility model tool has the following advantages and beneficial effect:
1, the power take-off mechanism of the utility model pendulum ball formula speed reducer changes the movement locus of ball, thus improves the transmission performance of ball, and then effectively improves reduction speed ratio and the transmission efficiency of speed reducer.
2, the power take-off mechanism structure of the utility model pendulum ball formula speed reducer is simple and difficulty of processing is little, is conducive to using in gearing industry and promoting.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model pendulum ball formula speed reducer;
Fig. 2 is the schematic diagram of enclosure interior end face;
Fig. 3 is the schematic diagram in speed reducer anti-rotation mechanism, support plate another side being provided with track groove two;
Fig. 4 is the power take-off mechanism structural representation of the utility model pendulum ball formula speed reducer;
Fig. 5 is the schematic diagram of support plate one side in speed reducer power take-off mechanism;
Fig. 6 is the schematic diagram that in speed reducer power take-off mechanism, output shaft end face is provided with track groove;
Fig. 7 is A place enlarged view in Fig. 4;
Wherein, 1 be housing, 2 be camshaft, 3 for bearing one, 4 for bearing two, 5 be support plate, 6 be output shaft, 7 be ball, 8 be track groove, 9 be hole, 10 be shell, 11 for ball two, 12 for hole two, 13 is track groove two.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Embodiment one
As shown in Fig. 1 to 7, the power take-off mechanism of pendulum ball formula speed reducer of the present utility model is connected with housing 1 and is connected on by bearing housing outside camshaft 2, and it is inner that camshaft 2 one end is installed on housing 1, and the other end is arranged on input shaft.Power take-off mechanism of the present utility model comprises and is connected to support plate 5 outside camshaft 2 and output shaft 6 respectively by bearing 1 and bearing 24 upper and lower sleeve, wherein, between the motor area being provided with ball 7 and ball between support plate 5 and output shaft 6, refer to the track groove 8 that output shaft 6 end face is arranged and the hole 9 that support plate 5 one side is arranged between this motor area, ball 7 is placed in hole 9.Output shaft 6 of the present utility model is a bearing, and bearing outside is connected to shell 10, and shell 10 is connected with housing 1, and transmission shaft also can adopt eccentric shaft to replace camshaft 2 to carry out transmission.
Track groove 8 of the present utility model is for cross section is in two " U " font groove, wherein, " U " font groove is arranged on the bottom of another " U " font groove, upper and lower two grooves are communicated with and the opening direction of groove is identical, and, the groove footpath r of " U " font groove under the groove footpath R > of upper " U " font groove, groove footpath R and ball 7 external diameter of upper " U " font groove match.In the present embodiment, the scope of the groove footpath R of upper " U " font groove is 0.05 ~ 0.08 millimeter, and roughness is less than 0.5.When speed reducer works, ball of the present utility model rolls at upper " U " font groove, and under " U " font groove can be used as oilhole, a certain amount of lubricant oil is deposited in oilhole, ball 7 is lubricated fast in rolling process, thus reduction ball 7 rubs with track groove 8, reduces the mechanical wear of speed reducer.Add man-hour in track groove 8, the center due to spherical cutter does not have cutting force thus affects machining accuracy, in order to improve the precision of upper " U " font groove, first under " U " font groove process, and then " U " font groove in fine finishing.Track groove 8 of the present utility model forms the cycloid with wave number at output shaft 6 end face and closes guide groove, and the number differences of wave number and hole that this cycloid closes guide groove is 1.
Support plate 5 of the present utility model is ring support plate, and its inner circle is socketed on outside camshaft 2 by bearing 1, and hole 9 is evenly arranged on the toroidal surface of support plate 5 one side, and the hole heart line in each hole 9 forms the concentric circle of annulus.Hole 9 of the present utility model is the semicircle orifice that aperture and ball 7 external diameter match, and the quantity in hole 9 is identical with the quantity of ball 7.
Power take-off mechanism structure of the present utility model is simple, difficulty of processing is little, forms speed reducer together with this mechanism can combine with anti-rotation mechanism.As shown in Figures 1 to 3, anti-rotation mechanism comprises between the motor area of ball 2 11 between support plate 5 and housing 1 inside and ball two, the hole 2 12 that housing 1 internal end surface is arranged and the track groove 2 13 that support plate 5 another side is arranged is referred between this motor area, and hole 2 12 is the semicircle orifice that aperture and ball 2 11 external diameter match, ball 2 11 is placed in hole 2 12, and the quantity of ball 2 11, hole 2 12 and track groove 2 13 is equal.The track groove 2 13 of this anti-rotation mechanism is Circular test groove separate between two, each track groove 2 13 is evenly arranged on the toroidal surface of support plate 5 another side, and the circle center line connecting of each track groove 2 13 forms the concentric circle of annulus, the position of track groove 2 13 is corresponding with the position in hole 2 12, and the internal diameter of track groove 2 13 is greater than the diameter of ball 2 11.
The speed reducer structure that power take-off mechanism of the present utility model and above-mentioned anti-rotation mechanism are combined to form is simply compact, and gearless driving can reach desirable slowing effect.The working principle that this speed reducer slows down is such: support plate 5 can be parts of power take-off mechanism, simultaneously also as the eccentric disc in speed reducer.When input shaft high speed rotating, it take offset as the circular movement of radius that camshaft 2 can make the center of support plate 5 do, now, be placed on the ball 2 11 in hole 2 12 roll in the track groove 2 13 of correspondence or slide, thus limit support plate 5 rotation and lateral pressure is transmitted to support plate 5, realize support plate 5 reciprocally swinging in the horizontal direction.Simultaneously, in support plate 5 substantially horizontal reciprocally swinging process, the ball 7 be placed in hole 9 rolls or slides in track groove 8, and motion active force is applied to output shaft 6, support plate 5 one side is made to realize using ball as medium engaging member engaging with output shaft 6 end face, thus realize camshaft 2 and often rotate 360 °, output shaft 6 offsets a certain amount of rotation angle under the motion stress effect of ball 7, and then the rotation of input shaft deceleration is passed to the output shaft 6 of speed reducer, to reach the effect of deceleration.
In the working procedure of speed reducer, engage because anti-rotation mechanism is improved to one group of ball by two groups of balls engagements, thus decrease engagement surface of contact, decrease contact resilient distortion link, and then strengthen the transmission rigidity of speed reducer.And are the combinations adopting semicircle orifice and track groove 8 between the motor area of ball 7 in power take-off mechanism, relative between the motor area that existing employing hypocycloid raceway and epicycloid raceway two track groove are formed, then there is not the phase difference that ball 7 produces when hypocycloid raceway and epicycloid rolling path rolling, ball 7 can be effectively avoided to cancel out each other when two track groove are rolled the phenomenon of the rotation angle exported, therefore, speed reducer of the present utility model adopts the combination of semicircle orifice and track groove 8 effectively can improve reduction speed ratio and the transmission efficiency of speed reducer.The reduction speed ratio of the speed reducer of the present embodiment is large, and zero clearance, rotational efficienty can reach 85-90%, and low noise, and stability of rotation is reliable.
Embodiment two
The present embodiment and embodiment one difference are only: power take-off mechanism of the present utility model replaces the patent No. to be output disc in 99202368.8 and output shaft, is connected and combines, form a kind of new speed reducer with anti-rotation mechanism.The structure of the power take-off mechanism in the present embodiment is consistent with embodiment one.The power take-off mechanism of the present embodiment, track groove and support plate as Fig. 4,5, shown in 6 and 7.
The structure of the speed reducer of the present embodiment is such: the structure of automatic output mechanism is identical with the structure of embodiment one automatic output mechanism, and support plate can be parts of automatic output mechanism, simultaneously also as the eccentric disc in speed reducer.The anti-rotation mechanism employing patent No. is the cross sliding board mechanism of 99202368.8, on the side being included in cross sliding board parallel have one group can group leader's groove one of anti-rotation steel ball one, the another side of cross sliding board has another group leader groove two perpendicular with elongated slot one, case inside face has and cross sliding board one side view, position, the identical elongated slot three in direction, anti-rotation steel ball one retainer one is located, support plate another side has and cross sliding board another side shape, position, the identical elongated slot four in direction, anti-rotation steel ball dual-purpose retainer two is located.Retainer one and retainer two have hole match with the anti-rotation steel ball one be arranged in cross sliding board groove and anti-rotation steel ball two respectively, the hole count on retainer one and retainer two and the distribution in hole are determined by the steel ball placed in cross sliding board groove.
The speed reducer working principle of the present embodiment: when input shaft high speed rotating, it take offset as the circular movement of radius that eccentric shaft can make the center of support plate do, and now, anti-rotation mechanism limits support plate rotation and support plate reciprocally swinging in the horizontal direction.Simultaneously, in support plate substantially horizontal reciprocally swinging process, the ball be placed in hole rolls or slides in track groove, and motion active force is applied to output shaft, support plate one side is engaged with output shaft end face, realizes camshaft and often rotate 360 °, output shaft offsets a certain amount of rotation angle under the motion stress effect of ball, thus the rotation of input shaft deceleration is passed to the output shaft of speed reducer, to reach the effect of deceleration.
Above-described embodiment is the utility model preferably mode of execution; but mode of execution of the present utility model is not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (10)
1. a power take-off mechanism for pendulum ball formula speed reducer, is connected with housing and is connected on outside transmission shaft by bearing housing, and transmission shaft one end is installed on enclosure interior, and the other end is arranged on input shaft; It is characterized in that: comprise and be connected to support plate outside transmission shaft and output shaft respectively by bearing upper and lower sleeve, between the motor area being provided with ball and ball between described support plate and output shaft; The track groove that output shaft end face is arranged and the hole that support plate one side is arranged is referred between described motor area; Described ball is placed in hole; Be socketed with shell outside described output shaft, shell is connected with housing.
2. the power take-off mechanism of pendulum ball formula speed reducer according to claim 1, is characterized in that: described track groove is cross section is two " U " font grooves.
3. the power take-off mechanism of pendulum ball formula speed reducer according to claim 2, it is characterized in that: described cross section refers in two " U " font groove: " U " font groove is arranged on the bottom of another " U " font groove, upper and lower two grooves are communicated with and the opening direction of groove is identical.
4. the power take-off mechanism of pendulum ball formula speed reducer according to claim 3, is characterized in that: the groove footpath r of " U " font groove under the groove footpath R > of upper " U " font groove; Groove footpath R and the ball external diameter of described upper " U " font groove match.
5. the power take-off mechanism of pendulum ball formula speed reducer according to claim 1, is characterized in that: described track groove forms the cycloid with wave number at output shaft end face and closes guide groove.
6. the power take-off mechanism of pendulum ball formula speed reducer according to claim 5, is characterized in that: the wave number of described track groove and the quantity in hole have difference.
7. the power take-off mechanism of pendulum ball formula speed reducer according to claim 1, is characterized in that: described hole is the semicircle orifice that aperture and ball external diameter match; The quantity in described hole is equal with the quantity of ball.
8. the power take-off mechanism of pendulum ball formula speed reducer according to claim 7, is characterized in that: described support plate is ring support plate, and its inner circle is connected to outside transmission shaft by bearing housing.
9. the power take-off mechanism of pendulum ball formula speed reducer according to claim 8, is characterized in that: described hole is evenly arranged on the toroidal surface of support plate one side, and the hole heart line in each hole forms the concentric circle of annulus.
10. the power take-off mechanism of pendulum ball formula speed reducer according to claim 1, is characterized in that: described transmission shaft is camshaft or eccentric shaft; Described output shaft is bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420543406.XU CN204099511U (en) | 2014-09-19 | 2014-09-19 | A kind of power take-off mechanism of pendulum ball formula speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420543406.XU CN204099511U (en) | 2014-09-19 | 2014-09-19 | A kind of power take-off mechanism of pendulum ball formula speed reducer |
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| CN204099511U true CN204099511U (en) | 2015-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420543406.XU Expired - Fee Related CN204099511U (en) | 2014-09-19 | 2014-09-19 | A kind of power take-off mechanism of pendulum ball formula speed reducer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819268A (en) * | 2015-02-25 | 2015-08-05 | 佛山市诺尔贝机器人技术有限公司 | Cycloid pan of speed reducer |
| CN104819253A (en) * | 2015-02-25 | 2015-08-05 | 佛山市诺尔贝机器人技术有限公司 | Multi-crankshaft cycloid speed reducer |
| CN104964011A (en) * | 2015-06-25 | 2015-10-07 | 广州启帆工业机器人有限公司 | Cross slide block driving speed reducer for multi-joint robot |
| CN107504145A (en) * | 2017-08-31 | 2017-12-22 | 海尚集团有限公司 | A kind of reductor with eccentricity compensation follower |
| CN110249157A (en) * | 2017-02-01 | 2019-09-17 | 恩普乐斯股份有限公司 | Ball reducer |
-
2014
- 2014-09-19 CN CN201420543406.XU patent/CN204099511U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819268A (en) * | 2015-02-25 | 2015-08-05 | 佛山市诺尔贝机器人技术有限公司 | Cycloid pan of speed reducer |
| CN104819253A (en) * | 2015-02-25 | 2015-08-05 | 佛山市诺尔贝机器人技术有限公司 | Multi-crankshaft cycloid speed reducer |
| CN104819253B (en) * | 2015-02-25 | 2017-05-17 | 佛山市诺尔贝机器人技术有限公司 | Multi-crankshaft cycloid speed reducer |
| CN104964011A (en) * | 2015-06-25 | 2015-10-07 | 广州启帆工业机器人有限公司 | Cross slide block driving speed reducer for multi-joint robot |
| CN110249157A (en) * | 2017-02-01 | 2019-09-17 | 恩普乐斯股份有限公司 | Ball reducer |
| CN107504145A (en) * | 2017-08-31 | 2017-12-22 | 海尚集团有限公司 | A kind of reductor with eccentricity compensation follower |
| CN107504145B (en) * | 2017-08-31 | 2023-08-15 | 海尚集团有限公司 | Speed reducer with eccentric compensation follow-up mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150114 Termination date: 20210919 |