CN205401643U - Double -deck side set gear does not have tooth clearance transmission structure - Google Patents
Double -deck side set gear does not have tooth clearance transmission structure Download PDFInfo
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- CN205401643U CN205401643U CN201620183688.6U CN201620183688U CN205401643U CN 205401643 U CN205401643 U CN 205401643U CN 201620183688 U CN201620183688 U CN 201620183688U CN 205401643 U CN205401643 U CN 205401643U
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- gear
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- side set
- drive mechanism
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Abstract
The utility model provides a double -deck side set gear does not have tooth clearance transmission structure, is including fixing at the epaxial first gear of first transmission, and upper and lower interval is coaxial to be fixed at epaxial second gear of secondary drive and third gear, the second gear is the same with the size with third gear teeth shape of face form, the second gear is the flexible gear, be connected through the flexible spoke of a plurality of interval configurations between its outer ring gear and the interior wheel hub, during outer ring gear load can around secondary drive axle axis mutually internally wheel hub elasticity reverse, reply the original shape when unloaded, the third gear is circular spline, and second gear and third gear teeth face stagger, and one side flank profil of third gear exposes the second gear tooth inslot that corresponds in its top, first gear meshes second gear and third gear simultaneously, meshing department, and the tooth's socket lateral wall of second gear and third gear opposite side is hugged closely respectively to the both sides flank profil of the same teeth of a cogwheel of first gear. This simple structure is reliable, can realize the low load of high accuracy and not have tooth clearance gear drive, can amplify motor output torque, the mounting adjustment of being convenient for.
Description
Technical field
This utility model relates to gear drive field, particularly relates to a kind of low-load anti-backlash gear drive mechanism.
Background technology
Gear drive is a kind of type of belt drive most widely used in machine driving.Its gear ratio is relatively accurate, and efficiency is high, and compact conformation, reliable operation, the life-span is long.In theory, the engagement place of a pair gear, the flank profil of one of them gear should with between the teeth groove of another corresponding gear without sideshake.But it practice, in order to compensate the change in size caused due to processing, alignment error and variations in temperature, to prevent gear bonded to each other under load condition to be stuck, must leave certain backlash in wheel coast side of tooth, this gap is referred to as backlash.
Gear drive has backlash to exist, and backlash is used for preventing from making the gear teeth block due to processing, alignment error and thermal deformation, and leaves space to the lubricating oil film between the flank of tooth.But sideshake brings idle running when reversion to again gear drive, makes mechanism not to be accurately positioned, thus have impact on the precision of transmission simultaneously.
Little in some load, however it is necessary that and still ensure transmission accuracy and the high-precision precision drive field of low-load that gear ratio is had certain requirements when frequent forward and backward, the existence of backlash significantly limit gear-driven use.In order to effectively prevent gear stuck eliminating while backlash, the gap method that disappears common at present includes machinery and disappears gap and the automatically controlled gap that disappears, and the latter implements more complicated, cost is high.
The common machinery gap that disappears is that two plate gears utilizing spring to link together are simultaneously engaged on coupling gear.Wherein a plate gear and axle are fixed, and another plate gear is empty set floating gear sheet on axle.This structure make use of the tension force of extension spring, the flank of tooth making two plate gears staggers slightly, on the left of the tooth of a plate gear and on the right side of the tooth of another plate gear, is close to the teeth groove arranged on left and right sides of coupling gear respectively, eliminate the need for backlash by this side set structure, idle running error time reverse, would not be produced.
But this gap-eliminating structure is more complicated when mounted, adjust the flank of tooth of two plate gears stagger distance time also comparatively bother, implement inconvenience.
Utility model content
Technical problem to be solved in the utility model is in that to provide a kind of double-deck side set gear without backlash drive mechanism, and this is simple and reliable for structure, and transmission accuracy is high, and it is convenient that installation and adjustment are implemented, and processing cost is relatively low.
This utility model is achieved through the following technical solutions:
A kind of double-deck side set gear is without backlash drive mechanism, it is characterised in that:
Described double-deck side set gear includes the first gear being fixed on the first power transmission shaft without backlash drive mechanism, between the upper and lower every the second gear being coaxially fixed on second driving shaft and the 3rd gear；
The tooth surface shape of the second gear and the 3rd gear is identical with gear size；
Second gear is flexible gear, is connected by the flexible spokes of some interval configurations between its external toothing and inner wheel hub, around the relative inner wheel hub elastic torsion of second driving shaft axis, can reply original shape time unloaded during external toothing load；
3rd gear is rigid gear, and the flank of tooth of the second gear and the 3rd gear staggers, and the side flank profil of the 3rd gear exposes in the second gear tooth slot corresponding above it；
First gear is simultaneously engaged the second gear and the 3rd gear, engagement place, and the both sides flank profil of the first same gear teeth of gear is close to the second gear and the teeth groove sidewall of the 3rd gear opposite side respectively.
Gear is when engagement, the gear teeth of the first gear stretch in two teeth groove of the second gear and the 3rd gear correspondence up and down, this gear teeth side flank profil is close to the teeth groove side of the 3rd gear, simultaneously opposite side flank profil extrudes the opposite side teeth groove sidewall that the teeth groove sidewall with above-mentioned 3rd gear of the second gear is relative, the elastic torsion that the external toothing of the second gear is slight, the teeth groove sidewall keeping above-mentioned second gear is close on the first gear, thus realizing without backlash transmission.No matter during rotating, backlash remains zero, it is ensured that the high accuracy of transmission；Simultaneously, the teeth groove of the second gear and the flank profil of the first gear are once leave the position of engagement, and the flank profil of the first gear will unclamp the extruding to the second gear tooth slot sidewall, and this teeth groove is replied original shape, even if do not have between gear to lubricate, stuck without causing gear.Second gear be directly assemblied on second driving shaft, assembling mode identical with ordinary gear, it is simple to mounting and adjusting.
By adjusting the first gear, the gear ratio of two gear the second gears and the 3rd gear, the gear ratio of gear can be changed flexibly, but in order to ensure better transmission stability, usual first gear teeth tips place diameter is less than or equal to the second gear and the 3rd gear teeth tips place diameter.
Further, described first power transmission shaft is motor output shaft, and the first gear is driving gear, and second driving shaft is driven axle, and the second gear and the 3rd gear are driven gear.The driving gear of little tooth tip diameter, the driven gear of big tooth tip diameter is generally used for the precision drive field needing to amplify the high accuracy low-load of motor output torque, the load capacity of whole dynamical system can be improved, therefore compared with the dynamical system not adopting gear drive, direct output motor moment of torsion, ensureing the high accuracy of transmission while, volume can being adopted less, exporting less motor to reach identical output effect, thus reducing system power dissipation.
Further, described flexible spokes is along the second gear radial direction or not along the second gear radial arrangement.Flexible spokes can the side's of being fin shape, the sheet-shaped or elastic rod of curve or other there is the elastic sheet or elastic rod etc. of shape of similar functions, only need to be beneficial to elastic torsion during the second gear external toothing load, and take into account easy to process, service life is persistently.
Further, described flexible spokes is four spokes along the second gear spaced radial 90 ° configuration, it is simple to processing, elastic recovery is good, it is simple to life-time service.
Further, described flexible spokes is plastics spoke, resin spoke or rubber spoke etc. other both there is certain rigidity, there is again necessarily other similar material spoke elastic.
The beneficial effects of the utility model are in that:
1, gap-eliminating structure is simple, good reliability, even if do not have between gear to lubricate, stuck without causing gear；
2, achieve the anti-backlash gear transmission in the precision drive field of high accuracy low-load, still ensure the high accuracy of transmission when the frequent forward and backward of motor；
3, motor output torque can be amplified, improve the load capacity of whole dynamical system, ensureing the high accuracy of transmission while, it is possible to adopt volume less, exporting less motor to reach identical output effect, thus reducing system power dissipation；
4, gear adopts standard component shape or directly utilizes standard component, and the requirement on machining accuracy of resislient gear is not high, it is simple to installs and adjusts.
It should be noted that claims are intended merely to a kind of relative position relationship that statement conveniently uses with the upper and lower position relation carried in description, it it is not the absolute restriction to described orientation.
Accompanying drawing explanation
Fig. 1 is the gear cooperation position front elevational schematic of a kind of preferred version
Fig. 2 is the top view of Fig. 1
Fig. 3 is the three-dimensional enlarged diagram of gear meshing portions position
In Fig. 1～3: 1 is the first gear, 2 is the second gear, and 201 is external toothing, and 202 is inner wheel hub, and 203 is flexible spokes, and 3 is the 3rd gear, and 4 is second driving shaft, and 5 is the first power transmission shaft.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As it is shown in figure 1, the first gear 1 being fixed on the first power transmission shaft 5 is drivewheel, the first power transmission shaft 5 is motor output shaft；Being follower every the second gear 2 being coaxially fixed on second driving shaft 4 and the 3rd gear 3 between the upper and lower, second driving shaft 4 is driven axle；First gear 1 tooth top place diameter is less than or equal to the second gear 2 and the 3rd gear 3 tooth top place diameter.
Second gear 2 is identical with gear size with the tooth surface shape of the 3rd gear 3；Second gear 2 is flexible gear, it is connected by the slice-shaped plastic flexible spoke 203 of four radially spaced 90 ° of configurations between its external toothing 201 with inner wheel hub 202, around second driving shaft 4 axis relative inner wheel hub 202 elastic torsion, original shape time unloaded, can be replied during external toothing 201 load；3rd gear 3 is rigid gear, and the flank of tooth of the second gear 2 and the 3rd gear 3 staggers, and the side flank profil of the 3rd gear 3 exposes in the second gear 2 teeth groove corresponding above it.
First gear 1 is simultaneously engaged the second gear 2 and the 3rd gear 3 engagement place, flexible spokes 203 elastic deformation near second gear 2 at this place, the elastic torsion that external toothing 201 is slight, the both sides flank profil of the first same gear teeth of gear 1 is close to the teeth groove sidewall of the second gear 2 and the 3rd gear 3 opposite side respectively.Therefore, no matter during motor forward and backward, the first gear 1, the second gear 2 and the 3rd gear 3, all in the engagement without backlash, do not have idle running, the rotational angle accurate positioning of whole drive mechanism, it is ensured that the high accuracy of transmission.
Claims (6)
1. a double-deck side set gear is without backlash drive mechanism, it is characterised in that:
Described double-deck side set gear includes the first gear (1) being fixed on the first power transmission shaft (5) without backlash drive mechanism, between the upper and lower every the second gear (2) being coaxially fixed on second driving shaft (4) and the 3rd gear (3)；
Second gear (2) is identical with gear size with the tooth surface shape of the 3rd gear (3)；
Second gear (2) is flexible gear, it is connected by the flexible spokes (203) of some interval configurations between its external toothing (201) and inner wheel hub (202), around second driving shaft (4) axis relative inner wheel hub (202) elastic torsion, original shape time unloaded, can be replied during external toothing (201) load；
3rd gear (3) is rigid gear, and the flank of tooth of the second gear (2) and the 3rd gear (3) staggers, and the side flank profil of the 3rd gear (3) exposes in the second gear (2) teeth groove corresponding above it；
First gear (1) is simultaneously engaged the second gear (2) and the 3rd gear (3), engagement place, the both sides flank profil of the first gear (1) the same gear teeth is close to the second gear (2) and the teeth groove sidewall of the 3rd gear (3) opposite side respectively.
2. double-deck side set gear according to claim 1 is without backlash drive mechanism, it is characterised in that: described first gear (1) tooth top place diameter is less than or equal to the second gear (2) and the 3rd gear (3) tooth top place diameter.
3. double-deck side set gear according to claim 2 is without backlash drive mechanism, it is characterized in that: described first power transmission shaft (5) is motor output shaft, first gear (1) is driving gear, second driving shaft (4) is driven axle, and the second gear (2) and the 3rd gear (3) are driven gear.
4. double-deck side set gear according to claim 1 is without backlash drive mechanism, it is characterized in that: described flexible spokes (203) is along the second gear (2) radial direction or not along the second gear (2) radial arrangement, flexible spokes (203) side of being fin shape, the sheet-shaped or elastic rod of curve.
5. double-deck side set gear according to claim 1 is without backlash drive mechanism, it is characterised in that: described flexible spokes (203) is four spokes along the second gear (2) spaced radial 90 ° configuration.
6. double-deck side set gear according to claim 1 is without backlash drive mechanism, it is characterised in that: described flexible spokes (203) is plastics spoke, resin spoke or rubber spoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620183688.6U CN205401643U (en) | 2016-03-10 | 2016-03-10 | Double -deck side set gear does not have tooth clearance transmission structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620183688.6U CN205401643U (en) | 2016-03-10 | 2016-03-10 | Double -deck side set gear does not have tooth clearance transmission structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205401643U true CN205401643U (en) | 2016-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620183688.6U Expired - Fee Related CN205401643U (en) | 2016-03-10 | 2016-03-10 | Double -deck side set gear does not have tooth clearance transmission structure |
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| CN (1) | CN205401643U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906172A (en) * | 2017-11-16 | 2018-04-13 | 东莞市松研智达工业设计有限公司 | A kind of gear drive reduced with speed increase gearratio |
| CN110869649A (en) * | 2017-08-28 | 2020-03-06 | 阿特拉斯·科普柯空气动力股份有限公司 | Screw compressor |
| CN110948518A (en) * | 2018-09-26 | 2020-04-03 | 沈阳新松机器人自动化股份有限公司 | Material receiving and sending device for cleaning robot |
-
2016
- 2016-03-10 CN CN201620183688.6U patent/CN205401643U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110869649A (en) * | 2017-08-28 | 2020-03-06 | 阿特拉斯·科普柯空气动力股份有限公司 | Screw compressor |
| CN107906172A (en) * | 2017-11-16 | 2018-04-13 | 东莞市松研智达工业设计有限公司 | A kind of gear drive reduced with speed increase gearratio |
| CN110948518A (en) * | 2018-09-26 | 2020-04-03 | 沈阳新松机器人自动化股份有限公司 | Material receiving and sending device for cleaning robot |
| CN110948518B (en) * | 2018-09-26 | 2022-08-02 | 沈阳新松机器人自动化股份有限公司 | Material receiving and sending device for cleaning robot |
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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: 20160727 Termination date: 20210310 |