CN107956863B - Backlash adjusting device of double-output transmission mechanism - Google Patents
Backlash adjusting device of double-output transmission mechanism Download PDFInfo
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- CN107956863B CN107956863B CN201610896527.6A CN201610896527A CN107956863B CN 107956863 B CN107956863 B CN 107956863B CN 201610896527 A CN201610896527 A CN 201610896527A CN 107956863 B CN107956863 B CN 107956863B
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- 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
- F16H57/00—General details of gearing
- F16H57/12—Arrangements for adjusting or for taking-up backlash not provided for elsewhere
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- 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
- F16H57/00—General details of gearing
- F16H57/12—Arrangements for adjusting or for taking-up backlash not provided for elsewhere
- F16H2057/126—Self-adjusting during operation, e.g. by a spring
- F16H2057/127—Self-adjusting during operation, e.g. by a spring using springs
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
- Gear Transmission (AREA)
Abstract
A gear gap adjusting device of a double-output transmission mechanism comprises a base, a first linkage unit, a second linkage unit and a force input unit, wherein the first linkage unit, the second linkage unit and the force input unit are axially arranged on the base. The first linkage unit comprises a first driven gear, the second linkage unit comprises a second driven gear, and the force input unit comprises a force input shaft, a first transmission gear fixedly arranged on the force input shaft and meshed with the first driven gear, a second transmission gear capable of rotating relative to the first transmission gear, a clutch group arranged between the first transmission gear and the second transmission gear, and an elastic piece sleeved between the first transmission gear and the second transmission gear. By utilizing the cooperation of the structure, the aim of adjusting the backlash can be achieved.
Description
Technical Field
The present invention relates to a transmission device, and more particularly, to a backlash adjustment device for a dual-output transmission mechanism.
Background
The existing transmission mechanism of the machine tool utilizes two output wheels which are arranged in parallel to simultaneously transmit a transmitted part, and because of the difference of the processing precision of components or long-time transmission, a tooth gap can be generated between the output wheels and the transmitted part, and the generation of the tooth gap can directly influence the processing precision of the machine tool.
In general, as shown in fig. 1, when the gear teeth 101 of two output wheels 1 are meshed with the row teeth 201 of one driven member 2, the gear teeth 101 and the row teeth 201 have a larger meshing depth, and the gear teeth 101 and the row teeth 201 are in a state of no gear gap. Although the problem of backlash is solved, this method can cause a larger interference between the gear teeth 101 and the row of gear teeth 201, which not only causes a large transmission load, unsmooth transmission, affects the processing quality, but also causes abrasion more easily, and affects the service life of parts.
Disclosure of Invention
The invention aims to provide a backlash adjusting device of a double-output transmission mechanism, which can adjust backlash, enable transmission among machine parts to be smooth and improve machining quality.
The invention relates to a backlash adjusting device of a double-output transmission mechanism, which can adjust the backlash of a first output wheel and a second output wheel which is arranged in parallel with the first output wheel, the backlash adjusting device comprises a base, a first linkage unit, a second linkage unit and an input unit, wherein the first linkage unit comprises a first rotating shaft which is arranged on the base in a shaft way and a first driven gear which is fixedly arranged on the first rotating shaft, the first rotating shaft can be used for linking the first output wheel, the second linkage unit is arranged on one side of the first linkage unit in a parallel way and comprises a second rotating shaft which is arranged on the base in a shaft way and a second driven gear which is fixedly arranged on the second rotating shaft, the second rotating shaft can be used for linking the second output wheel, the input unit is arranged between the first linkage unit and the second linkage unit, and comprises a force input shaft which is arranged on the base and extends along an axis, a first transmission gear which is fixedly arranged on the force input shaft, a second transmission gear which can rotate and is sleeved on the force input shaft and is positioned at one side of the first transmission gear, a clutch group which is arranged between the first transmission gear and the second transmission gear, and an elastic piece which is sleeved between the first transmission gear and the second transmission gear, wherein the first transmission gear is constantly meshed with the first driven gear, the second transmission gear can be meshed or separated relative to the second driven gear, the clutch group can enable the second transmission gear and the first transmission gear to be connected into a whole or separated from each other, when the second transmission gear is operated to be separated relative to the first transmission gear, the second transmission gear is separated from the second driven gear, the second transmission gear can be operated to rotate in a first direction relative to the first transmission gear, the elastic force stored in the elastic piece can be utilized to drive the second transmission gear to rotate in a second direction opposite to the first direction relative to the first transmission gear, and the second driven gear is driven to rotate reversely relative to the first driven gear.
According to the gear gap adjusting device of the double-output transmission mechanism, the second driven gear of the second linkage unit can move from a first position to a second position along the second rotating shaft, when the second driven gear is located at the first position, the second transmission gear is connected with the first transmission gear into a whole, the second driven gear is meshed with the second transmission gear, when the second driven gear is located at the second position, the second transmission gear is separated from the first transmission gear, and the second driven gear is not meshed with the second transmission gear.
The invention relates to a gear gap adjusting device of a double-output transmission mechanism, a second rotating shaft of a second linkage unit is a bolt slot shaft, a second driven gear is provided with a bolt slot hole nested in the second rotating shaft, the second driven gear is also provided with a shaft sleeve part extending along the axial direction, the shaft sleeve part is provided with a plurality of channels extending along the axial direction, the shaft sleeve part is provided with radial tightening deformation capability, the second linkage unit also comprises a tightening ring sleeved on the shaft sleeve part and at least one locking component capable of operating the tightening ring to tighten the shaft sleeve part, and when the second driven gear is positioned at the first position, the tightening ring tightens the shaft sleeve part on the second rotating shaft.
The invention relates to a gear gap adjusting device of a double-output transmission mechanism, which comprises a force input unit, a positioning ring and a plurality of locking pieces, wherein the positioning ring can move along the axis and is sleeved on one side of a second transmission gear, the locking pieces can enable the positioning ring to generate positioning relative to the force input shaft, the locking pieces are operated to enable the positioning ring to move from a pressing position propping against the second transmission gear to a releasing position far away from the second transmission gear, when the positioning ring is positioned at the pressing position, the second transmission gear is connected with the first transmission gear into a whole, and when the positioning ring is positioned at the releasing position, the second transmission gear and the first transmission gear are mutually separated.
The invention relates to a gear gap adjusting device of a double-output transmission mechanism, which is characterized in that the clutch group is provided with a plurality of first clutch teeth arranged on a first transmission gear and a plurality of second clutch teeth which are arranged on a second transmission gear and can be mutually meshed with the first clutch teeth, a positioning ring of the force input unit can also move from a release position far away from the second transmission gear to an intermediate position, and a gap capable of rotating is reserved between the second clutch teeth and the first clutch teeth in the intermediate position.
The invention relates to a gear gap adjusting device of a double-output transmission mechanism, wherein a first transmission gear of a force input unit is provided with a first end face, a second transmission gear is provided with a second end face opposite to the first end face, and a clutch group is provided with a plurality of first clutch teeth arranged on the first end face and a plurality of second clutch teeth which are arranged on the second end face and can be mutually meshed with the first clutch teeth.
The elastic piece of the force input unit is a torsion spring and is provided with a first end part and a second end part which surrounds the axis and is opposite to the first end part, the first transmission gear is also provided with a first blocking surface which is perpendicular to the first end surface and can be used for the first end part to be abutted, and the second transmission gear is also provided with a second blocking surface which is perpendicular to the second end surface and can be used for the second end part to be abutted.
The invention relates to a gear gap adjusting device of a double-output transmission mechanism, which comprises a first linkage unit and a locking piece, wherein the locking piece can be detached and is axially arranged on a base, and the locking piece can lock the first rotating shaft relative to the base.
The invention has the beneficial effects that: by utilizing the clutch group and the elastic piece arranged on the force input unit, when the second transmission gear is operated to rotate relative to the first transmission gear and then the second transmission gear is operated to be connected into a whole relative to the first transmission gear, the elastic piece can store the capability of driving the second transmission gear to rotate relative to the first transmission gear towards the second direction, and the purpose of automatically adjusting the tooth gaps of the first output wheel, the second output wheel and a driven piece can be achieved.
Drawings
FIG. 1 is a schematic diagram of backlash adjustment for a prior art transmission;
FIG. 2 is a combined cross-sectional view of one embodiment of a backlash adjustment device of a dual output transmission of the present invention;
FIG. 3 is a partially exploded perspective view of the embodiment illustrating a force-in unit;
FIG. 4 is another partially exploded perspective view of the embodiment illustrating a second linkage unit;
FIG. 5 is an enlarged partial schematic view of FIG. 2;
FIG. 6 is a fragmentary cross-sectional schematic view of the embodiment illustrating operation of a second transfer gear;
FIG. 7 is a schematic diagram of the embodiment prior to a backlash adjustment;
fig. 8 is a schematic diagram of the embodiment after a backlash adjustment.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Referring to fig. 2 and 5, in an embodiment of the backlash adjustment device of the dual output transmission mechanism of the present invention, backlash adjustment can be performed on a first output wheel 110 and a second output wheel 120 disposed parallel to the first output wheel 110, the first output wheel 110 and the second output wheel 120 are simultaneously engaged on a driven member 130, the driven member 130 has a plurality of rows of teeth 140, and the backlash adjustment device includes a base 10, a first linkage unit 20, a second linkage unit 30 and an input unit 40.
The base 10 has a first side wall 11, a second side wall 12 spaced from the first side wall 11, a peripheral wall 13 connected between the first side wall 11 and the second side wall 12, wherein the first side wall 11, the second side wall 12 and the peripheral wall 13 together define a chamber 14, and the base 10 further has a pair of first shaft holes 15 disposed at opposite positions of the first side wall 11 and the second side wall 12, a pair of second shaft holes 16 disposed at one side of the first shaft holes 15, a pair of central holes 17 disposed between the first shaft holes 15 and the second shaft holes 16, and a shaft hole cover 18 mounted on the second side wall 12 and sealed in the corresponding first shaft holes 15. The shaft hole cover 18 has a through hole 181.
The first linkage unit 20 is mounted in the chamber 14, and includes a first rotating shaft 21 axially disposed in the first shaft hole 15 of the base 10, a first driven gear 22 fixedly disposed on the first rotating shaft 21, and a locking member 23 detachably and axially disposed on the base 10, wherein the first rotating shaft 21 can be linked with the first output wheel 110, and has a screw hole 211 corresponding to the through hole 181. The locking member 23 is pivotally disposed at the through hole 181 of the shaft hole cover 18, and can be screwed into the screw hole 211, and can lock the first rotating shaft 21 relative to the base 10.
Referring to fig. 4, the second linkage unit 30 is parallel to and disposed at one side of the first linkage unit 20, and includes a second rotating shaft 31 axially disposed in the second shaft hole 16 of the base 10, a second driven gear 32 slidably disposed around the second rotating shaft 31, a tightening ring 33 capable of fastening the second driven gear 32 to the second rotating shaft 31, and two locking assemblies 34 capable of operating the tightening ring 33 to generate tightening. The second rotating shaft 31 can link the second output wheel 120 and is a spline shaft, and with reference to fig. 4, the second driven gear 32 has a spline hole 321 nested in the second rotating shaft 31, and a sleeve portion 322 surrounding the spline hole 321 and extending along the axial direction, where the sleeve portion 322 has a plurality of channels 323 extending along the axial direction, and the channels 323 are utilized to have the capability of radial convergent deformation. The tightening ring 33 has a slit 331, and the tightening ring 33 can be deformed in the radial direction by the slit 331, and the tightening ring 33 can be tightened on the boss 322 by operating the locking member 34.
Referring to fig. 3, the force input unit 40 is disposed between the first linkage unit 20 and the second linkage unit 30, and includes a force input shaft 41 axially disposed on the base 10 and extending along an axis L, a first transmission gear 42 fixedly disposed on the force input shaft 41, a second transmission gear 43 rotatable and sleeved on the force input shaft 41 and located on one side of the first transmission gear 42, a clutch assembly 44 disposed between the first transmission gear 42 and the second transmission gear 43, an elastic member 45 sleeved between the first transmission gear 42 and the second transmission gear 43, a positioning ring 46 capable of moving along the axis L and sleeved on one side of the second transmission gear 43, and a plurality of locking members 47 capable of positioning the positioning ring 46 relative to the force input shaft 41. The first driving gear 42 is meshed with the first driven gear 22, the second driving gear 43 can be meshed with the second driven gear 32, the clutch group 44 can enable the second driving gear 43 and the first driving gear 42 to be connected into a whole or separated from each other, when the second driving gear 43 is operated to be separated relative to the first driving gear 42, the second driving gear 43 can be operated to rotate relative to the first driving gear 42 in a first direction, and when the second driving gear 43 is operated to be connected into a whole relative to the first driving gear 42, the elastic force accumulated by the elastic member 45 can drive the second driving gear 43 to rotate relative to the first driving gear 42 in a second direction opposite to the first direction. The elastic member 45 is a torsion spring and has a first end 451 and a second end 452 opposite to the first end 451 about the axis L, the first driving gear 42 has a first end 421 and a first blocking surface 422 perpendicular to the first end 421 for the first end 451 to block, and the second driving gear 43 has a second end 431 opposite to the first end 421 and a second blocking surface 432 perpendicular to the second end 431 for the second end 452 to block. The clutch set 44 has a plurality of first clutch teeth 441 disposed on the first end surface 421 and a plurality of second clutch teeth 442 disposed on the second end surface 431 and capable of engaging with the first clutch teeth 441.
As shown in fig. 2 and fig. 5, when the overall assembly of the backlash adjustment device of the present invention is completed or the device is used for a period of time, the first output wheel 110 and the second output wheel 120 are simultaneously engaged on the driven member 130, and as shown in fig. 7, backlash is generated between the first output wheel 110, the second output wheel 120 and the row teeth 140 of the driven member 130. At this time, the second driven gear 32 is located at a first position, the second driven gear 32 is meshed with the second transmission gear 43, and the second transmission gear 43 can be integrally connected with the first transmission gear 42 through the clutch set 44. The positioning ring 46 is located at a pressing position against the second transmission gear 43.
When the backlash is to be eliminated, as shown in fig. 6, the operator first passes the locking member 23 through the through hole 181 of the shaft hole cover 18 and screws the locking member into the screw hole 211 of the first rotating shaft 21, so that the first linkage unit 20 is positioned relative to the base 10.
Then, the operator unscrews the locking assembly 34 again, the second driven gear 32 can move from the first position to a second position along the second rotating shaft 31, and the second driven gear 32 is not engaged with the second driving gear 43, and continues to unscrew the locking member 47, and the positioning ring 46 moves from the pressing position against the second driving gear 43 to a releasing position away from the second driving gear 43, and the operator moves the second driving gear 43 along the axis L toward the positioning ring 46, and the second clutch teeth 442 of the clutch set 44 are separated from the first clutch teeth 441. Then, the operator operates the second transmission gear 43 to rotate in the first direction relative to the first transmission gear 42, and after the elastic member 45 is held by the elastic force, the operator further operates the second transmission gear 43 to move to an intermediate position toward the first transmission gear 42, but there is a small rotatable gap between the second clutch teeth 442 and the first clutch teeth 441, and then temporarily locks the positioning ring 46 on the force input shaft 41.
When the operator moves the second driven gear 32 back to the first position, and then operates the locking assembly 34 to tighten the tightening ring 33 on the shaft sleeve portion 322, and after the second driven gear 32 is positioned relative to the second rotating shaft 31, the locking member 23 is removed, at this time, since the restraining force of the first linkage unit 20 is released, a reverse force is applied between the first linkage unit 20 and the second linkage unit 30 by using the release elastic force of the elastic member 45, and the reverse force is transmitted to the first output wheel 110 and the second output wheel 120, so as to eliminate backlash (see fig. 8).
After the backlash is eliminated, the operator again operates the second transmission gear 43 to move toward the first transmission gear 42 to the pressing position, and the second clutch teeth 442 and the first clutch teeth 441 mesh with each other, so that the transmission state of fig. 2 and 5 can be restored.
Therefore, by utilizing the clutch assembly 44 and the elastic member 45 of the force input unit 40, when the second transmission gear 43 is operated to rotate relative to the first transmission gear 42 and then the second transmission gear 43 is operated to be connected integrally with the first transmission gear 42, the present invention can enable the elastic member 45 to store the capability of driving the second transmission gear 43 to rotate relative to the first transmission gear 42 in the second direction, and can automatically adjust the backlash of the teeth 140 of the first output wheel 110, the second output wheel 120 and the driven member 130.
In summary, the backlash adjustment device of the dual output transmission mechanism of the present invention can solve the backlash problem, avoid the interference between the first output wheel 110, the second output wheel 120 and the row teeth 140 of the driven member 130, reduce the transmission load and smooth the transmission, further improve the processing quality and prolong the service life of the machine member, and the operation of eliminating backlash is quite simple, thereby achieving the purpose of the present invention.
Claims (8)
1. The utility model provides a two output drive mechanism's backlash adjusting device, can carry out the backlash adjustment to a first output wheel and a second output wheel that is parallel to this first output wheel, this backlash adjusting device contains a base and locates a first linkage unit, a second linkage unit and an income power unit of this base of axle, this backlash adjusting device's characterized in that:
the first linkage unit comprises a first rotating shaft which is axially arranged on the base and a first driven gear which is fixedly arranged on the first rotating shaft, and the first rotating shaft can be linked with the first output wheel;
the second linkage unit is arranged on one side of the first linkage unit in parallel and comprises a second rotating shaft which is axially arranged on the base and a second driven gear which is fixedly arranged on the second rotating shaft, and the second rotating shaft can be used for linking the second output wheel;
the input unit is arranged between the first linkage unit and the second linkage unit and comprises an input shaft, a first transmission gear, a second transmission gear, a clutch group and an elastic piece, wherein the input shaft is arranged on the base and extends along an axis, the first transmission gear is fixedly arranged on the input shaft, the second transmission gear is rotatable and sleeved on one side of the first transmission gear, the clutch group is arranged between the first transmission gear and the second transmission gear, the elastic piece is sleeved between the first transmission gear and the second transmission gear, the first transmission gear is constantly meshed with the first driven gear, the second transmission gear can be meshed with or separated from the second driven gear, the clutch group can enable the second transmission gear and the first transmission gear to be connected into a whole or separated from each other, and when the second transmission gear is operated to be separated from the first transmission gear, the second transmission gear is also separated from the second driven gear, the second transmission gear can be operated to rotate relative to the first transmission gear in a first direction, the elastic piece is utilized to drive the second driven gear to rotate relative to the first driven gear in a first direction opposite to the first driven gear, and the second driven gear is driven to rotate relative to the first driven gear in the opposite direction.
2. The backlash adjustment device of a double-output transmission according to claim 1, characterized in that: the second driven gear of the second linkage unit can move from a first position to a second position along the second rotating shaft, when the second driven gear is positioned at the first position, the second transmission gear is connected with the first transmission gear into a whole, the second driven gear is meshed with the second transmission gear, when the second driven gear is positioned at the second position, the second transmission gear is separated from the first transmission gear, and the second driven gear is not meshed with the second transmission gear.
3. The backlash adjustment device of a double-output transmission according to claim 2, characterized in that: the second rotating shaft of the second linkage unit is a bolt slot shaft, the second driven gear is provided with a bolt slot hole nested in the second rotating shaft, the second driven gear is also provided with a shaft sleeve part extending along the axial direction, the shaft sleeve part is provided with a plurality of channels extending along the axial direction, the shaft sleeve part is provided with a radial beam-contracting deformation capacity, the second linkage unit also comprises a tightening ring sleeved on the shaft sleeve part and at least one locking component capable of operating the tightening ring to tighten the shaft sleeve part, and when the second driven gear is positioned at the first position, the tightening ring tightens the shaft sleeve part on the second rotating shaft.
4. The backlash adjustment device of a double-output transmission according to claim 1, characterized in that: the force input unit also comprises a positioning ring which can move along the axis and is sleeved on the force input shaft and is positioned at one side of the second transmission gear, and a plurality of locking pieces which can enable the positioning ring to be positioned relative to the force input shaft, the locking pieces are operated to enable the positioning ring to move from a pressing position which is propped against the second transmission gear to a releasing position which is far away from the second transmission gear, when the positioning ring is positioned at the pressing position, the second transmission gear is connected with the first transmission gear into a whole, and when the positioning ring is positioned at the releasing position, the second transmission gear and the first transmission gear are mutually separated.
5. The backlash adjustment device of a double-output transmission according to claim 4, characterized in that: the clutch group is provided with a plurality of first clutch teeth arranged on the first transmission gear and a plurality of second clutch teeth which are arranged on the second transmission gear and can be mutually meshed with the first clutch teeth, the positioning ring of the force input unit can also move from a release position far away from the second transmission gear to an intermediate position, and a rotatable gap is reserved between the second clutch teeth and the first clutch teeth in the intermediate position.
6. The backlash adjustment device of a double-output transmission according to claim 4, characterized in that: the first transmission gear of the force input unit is provided with a first end face, the second transmission gear is provided with a second end face opposite to the first end face, and the clutch group is provided with a plurality of first clutch teeth arranged on the first end face and a plurality of second clutch teeth which are arranged on the second end face and can be mutually meshed with the first clutch teeth.
7. The backlash adjustment device of a double-output transmission according to claim 6, characterized in that: the elastic piece of the force input unit is a torsion spring and is provided with a first end part and a second end part which surrounds the axis and is opposite to the first end part, the first transmission gear is also provided with a first blocking surface which is perpendicular to the first end surface and can be used for being abutted by the first end part, and the second transmission gear is also provided with a second blocking surface which is perpendicular to the second end surface and can be used for being abutted by the second end part.
8. The backlash adjustment device of a double-output transmission according to claim 1, characterized in that: the first linkage unit also comprises a locking piece which can be detached and is axially arranged on the base, and the locking piece can lock the first rotating shaft relative to the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610896527.6A CN107956863B (en) | 2016-10-14 | 2016-10-14 | Backlash adjusting device of double-output transmission mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610896527.6A CN107956863B (en) | 2016-10-14 | 2016-10-14 | Backlash adjusting device of double-output transmission mechanism |
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| CN107956863A CN107956863A (en) | 2018-04-24 |
| CN107956863B true CN107956863B (en) | 2023-06-30 |
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| CN201610896527.6A Active CN107956863B (en) | 2016-10-14 | 2016-10-14 | Backlash adjusting device of double-output transmission mechanism |
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| JP2020148323A (en) * | 2019-03-15 | 2020-09-17 | 株式会社リコー | Drive transmission device, driving device, and robot |
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