CN105397552A - Gear clearance eliminating transmission mechanism - Google Patents
Gear clearance eliminating transmission mechanism Download PDFInfo
- Publication number
- CN105397552A CN105397552A CN201510875629.5A CN201510875629A CN105397552A CN 105397552 A CN105397552 A CN 105397552A CN 201510875629 A CN201510875629 A CN 201510875629A CN 105397552 A CN105397552 A CN 105397552A
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- CN
- China
- Prior art keywords
- gear
- clearance elimination
- driving gear
- mouse tooth
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/54—Arrangements or details not restricted to group B23Q5/02 or group B23Q5/22 respectively, e.g. control handles
- B23Q5/56—Preventing backlash
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
Abstract
The invention discloses a gear clearance eliminating transmission mechanism which comprises a rotary table seat (1), a driving gear (7), a clearance eliminating gear (8) and a hirth coupling (9), wherein an end surface bearing (14) is mounted on the end surface of the driving gear (7); and the clearance eliminating gear (8) sleeves a central spindle of the driving gear (7) and is pressed on the end surface bearing (14) axially. The gear clearance eliminating transmission mechanism can ensure that the staggered angle between the clearance eliminating gear and the driving gear is adjusted in a real-time manner according to the width of a spline, and is low in processing difficulty, high in manufacturing precision, and high in rigidity.
Description
Technical field
The present invention relates to a kind of gear drive, particularly relate to a kind of gear clearance elimination transmission mechanism of the driving for precision rotating platform.
Background technology
In numerically controlled processing equipment technical field, numerical control turntable is one of them critical component.The type of drive of numerical control turntable has a lot, than if any: torque motor directly drives, driven by servomotor Worm Wheel System, driven by servomotor gear drive etc.Although the direct actuation techniques of torque motor is widely using, still with traditional gear drive in the panoramic table of large-scale numerical control turntable and non-full circle, driven by servomotor is being main.
In gear transmission structure, the transmission theory of engagement of gear and mismachining tolerance cause gear to have sideshake between tooth and teeth groove in engagement process, and the existence of this sideshake makes turntable have driving error in reverse procedure.Therefore eliminating sideshake is one of necessary condition ensureing transmission accuracy.
The structure of anti-backlash mechanism also has a lot, prior art is as Fig. 1, reductor is arranged on turntable seat, be provided with the disappear main drive gear of gap transmission mechanism of mouse tooth to be connected with speed reducer output shaft, driven gear engages with main drive gear, and driven gear is fixedly mounted on panoramic table, when driven by servomotor reductor, reductor drives driving gears, and driving gear drives driven gear, and driven gear and panoramic table rotate centered by bearing under the support of guide rail.
Mouse tooth disappear gap transmission mechanism concrete structure as: Fig. 2, driving gear is identical with the gear parameter such as modulus, the number of teeth of clearance elimination gear.Driving gear is connected with speed reducer output shaft; The mandrel that clearance elimination gear is sleeved on driving gear can rotate around mandrel axis, and when clearance elimination gear is positioned at initial position, clearance elimination gear aligns with the flank profil of driving gear; The mandrel that mouse tooth disk is sleeved on driving gear can slide up and down along the feather key be arranged on driving gear, and the mouse tooth on mouse tooth disk engages with the mouse tooth on clearance elimination gear.When tightening adjustment screw, compression plate extruding disk spring moves down, disk spring promotes mouse tooth disk slide downward, mouse tooth produces the component of a radial direction after being subject to a downward power thus, this component forces clearance elimination gear to rotate, and makes clearance elimination gear and the driving gear angle that staggers eliminate sideshake and filled up by teeth groove.
There is following major defect in this structure:
1, mouse tooth disk manufacturing process is complicated, and difficulty of processing is large, and the accuracy of manufacture is not high.
2, clearance elimination gear end face and driving gear end face are planar friction, rotate dumb;
3, when by a tooth socket transmission to another teeth groove time, due to the reason of pitch error, the angle needing clearance elimination gear and driving gear to stagger adjusts immediately by the width of teeth groove, but because mouse tooth precision is not high, the angle adjustment that the reason of clearance elimination gear causes clearance elimination gear and driving gear to stagger is not instant, therefore in transmission process, there is jitter phenomenon, especially during quick rotation.
4, one end of whole backlash gear mechanism is fixed on reductor, and the other end is unsettled, causes this mechanism's rigidity poor.
Summary of the invention
Technical problem to be solved by this invention is to provide and a kind ofly can ensures angle that clearance elimination gear and driving gear the stagger gear clearance elimination transmission mechanism by the instantaneity of the width adjustment of teeth groove.
In order to solve the problems of the technologies described above, gear clearance elimination transmission mechanism provided by the invention, comprise turntable seat, driving gear, clearance elimination gear and mouse tooth disk, the end face of described driving gear is provided with an end face bearing, on the mandrel that described clearance elimination gear is sleeved on described driving gear and axial pressure-bearing on described end face bearing.
Described turntable seat is provided with a bearing block, and described mouse tooth disk is arranged in described bearing block by bearing.
Described bearing is needle bearing.
Described mouse tooth disk and described clearance elimination gear are equipped with two and the intermeshing mouse tooth of the other side, and the two ends of each described mouse tooth are equipped with a mouse facing intermeshing with the mouse tooth described in another.
Adopt the gear clearance elimination transmission mechanism of technique scheme, owing to being provided with an end face bearing on the end face of driving gear, on the mandrel that clearance elimination gear is sleeved on driving gear and axial pressure-bearing on described end face bearing.When tightening adjustment screw, tighten adjustment screw end face extruding disk spring to move down, disk spring promotes mouse tooth disk slide downward, mouse tooth produces the component of a radial direction after being subject to a downward power thus, this component forces clearance elimination gear to rotate, and makes clearance elimination gear and the driving gear angle that staggers eliminate sideshake and filled up by teeth groove.There is bearing block to be arranged on turntable seat, between mouse tooth disk and bearing block, bearing is installed.Mouse tooth on mouse tooth disk and the mouse tooth on clearance elimination gear all only devise two can intermeshing mouse facing.
Compared with prior art, tool has the following advantages in the present invention:
1, manufacture two mouse teeth, reduce difficulty of processing, and be easy to just ensure that its accuracy of manufacture;
2, between clearance elimination gear and driving gear, devise end face bearing, clearance elimination gear can be allowed to rotate flexibly, ensure that angle that clearance elimination gear and driving gear the stagger instantaneity by the width adjustment of teeth groove.
3, on mouse tooth disk cylindrical, installed needle bearing, cantilever gear shaft has been made into one end and supported by reductor, the two ends supporting mechanism that the other end is supported by needle bearing, substantially increases the rigidity of backlash gear mechanism.
In sum, the present invention a kind ofly can ensure that angle that clearance elimination gear and driving gear stagger is by the instantaneity of the width adjustment of teeth groove and the gear clearance elimination transmission mechanism that difficulty of processing is low, the accuracy of manufacture is high, rigidity is large.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing gear clearance elimination transmission mechanism.
Fig. 2 is the structure for amplifying schematic diagram of existing gear clearance elimination transmission mechanism.
Fig. 3 is structural representation of the present invention.
Fig. 4 is improvement schematic diagram of the present invention.
Fig. 5 is the structural representation that clearance elimination gear of the present invention improves.
Fig. 6 is the structural representation that mouse tooth disk of the present invention improves.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
Prior art is as Fig. 1, reductor 2 is arranged on turntable seat 1, the disappear driving gear 7 of gap transmission mechanism of mouse tooth is installed be connected with the output shaft of reductor 2, driven gear 5 engages with driving gear 7, driven gear 5 is fixedly mounted on panoramic table 4, and when driven by servomotor reductor 2, reductor 2 drives driving gear 7 to move, driving gear 7 drives driven gear 5, and driven gear 5 and panoramic table 4 rotate centered by bearing 6 under the support of guide rail 3.
Mouse tooth disappear gap transmission mechanism concrete structure as: Fig. 2, driving gear 7 is identical with the gear parameter such as modulus, the number of teeth of clearance elimination gear 8.Driving gear 7 is connected with the output shaft of reductor 2; The mandrel that clearance elimination gear 8 is sleeved on driving gear 7 can rotate around mandrel axis, and when clearance elimination gear 8 is positioned at initial position, clearance elimination gear 8 aligns with the flank profil of driving gear 7; The mandrel that mouse tooth disk 9 is sleeved on driving gear 7 can slide up and down along the feather key 13 be arranged on driving gear 7, and the mouse tooth on mouse tooth disk 9 engages with the mouse tooth on clearance elimination gear 8.When tightening adjustment screw 10, compression plate 11 extrudes disk spring 12 and moves down, disk spring 12 promotes mouse tooth disk 9 slide downward, mouse tooth produces the component of a radial direction after being subject to a downward power thus, this component forces clearance elimination gear 8 to rotate, and makes clearance elimination gear 8 and driving gear 7 angle that staggers eliminate sideshake and filled up by teeth groove.
Gear clearance elimination transmission mechanism provided by the invention, see Fig. 3, driving gear 7 is identical with the gear parameter such as modulus, the number of teeth of clearance elimination gear 8.Driving gear 7 is connected with the output shaft of reductor 2; The end face of driving gear 7 is provided with an end face bearing 14, on the mandrel that clearance elimination gear 8 is sleeved on driving gear 7 and axial pressure-bearing on end face bearing 14, can rotate around mandrel axis, when clearance elimination gear 8 is positioned at initial position, clearance elimination gear 8 aligns with the flank profil of driving gear 7; The mandrel that mouse tooth disk 9 is sleeved on driving gear 7 slides up and down along the feather key 13 be arranged on driving gear 7, and the mouse tooth on mouse tooth disk 9 engages with the mouse tooth on clearance elimination gear 8.When tightening adjustment screw 10, the end face extruding disk spring 12 of adjustment screw 10 moves down, disk spring 12 promotes mouse tooth disk 9 slide downward, mouse tooth produces the component of a radial direction after being subject to a downward power thus, this component forces clearance elimination gear 8 to rotate, and makes clearance elimination gear 8 and driving gear 7 angle that staggers eliminate sideshake and filled up by teeth groove.
A modification of the present invention, Fig. 4, turntable seat 1 is provided with a bearing block 16, and mouse tooth disk 9 is arranged in bearing block 16 by bearing.
Preferably, bearing is needle bearing 15.
Further improvement of the present invention, mouse tooth on clearance elimination gear 8 as shown in Figure 5, mouse tooth on mouse tooth disk 9 as shown in Figure 6, mouse tooth disk 9 and clearance elimination gear 8 are equipped with two and the intermeshing mouse tooth 17 of the other side, and the two ends of each mouse tooth 17 are equipped with one and the intermeshing mouse facing 18 of another mouse tooth 17.
Compared with prior art, tool has the following advantages in the present invention:
1, manufacture two mouse teeth 17, reduce difficulty of processing, and be easy to just ensure that its accuracy of manufacture;
2, between clearance elimination gear 8 and driving gear 7, devise end face bearing 14, clearance elimination gear 8 can be allowed to rotate flexibly, ensure that angle that clearance elimination gear 8 and driving gear 7 the stagger instantaneity by the width adjustment of teeth groove.
3, on the cylindrical of mouse tooth disk 9, installed needle bearing 15, cantilever gear shaft has been made into one end and supported by reductor 2, the two ends supporting mechanism that the other end is supported by needle bearing 15, substantially increases the rigidity of backlash gear mechanism.
Claims (4)
1. a gear clearance elimination transmission mechanism, comprise turntable seat (1), driving gear (7), clearance elimination gear (8) and mouse tooth disk (9), it is characterized in that: an end face bearing (14) is installed on the end face of described driving gear (7), on the mandrel that described clearance elimination gear (8) is sleeved on described driving gear (7) and axial pressure-bearing on described end face bearing (14).
2. gear clearance elimination transmission mechanism according to claim 1, it is characterized in that: on described turntable seat (1), be provided with a bearing block (16), described mouse tooth disk (9) is arranged in described bearing block (16) by bearing.
3. gear clearance elimination transmission mechanism according to claim 2, is characterized in that: described bearing is needle bearing (15).
4. gear clearance elimination transmission mechanism according to claim 1 and 2, it is characterized in that: described mouse tooth disk (9) and described clearance elimination gear (8) are equipped with two and the intermeshing mouse tooth (17) of the other side, the two ends of each described mouse tooth (17) are equipped with a mouse facing (18) intermeshing with the mouse tooth (17) described in another.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510875629.5A CN105397552A (en) | 2015-12-02 | 2015-12-02 | Gear clearance eliminating transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510875629.5A CN105397552A (en) | 2015-12-02 | 2015-12-02 | Gear clearance eliminating transmission mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105397552A true CN105397552A (en) | 2016-03-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510875629.5A Pending CN105397552A (en) | 2015-12-02 | 2015-12-02 | Gear clearance eliminating transmission mechanism |
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| CN (1) | CN105397552A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5598749A (en) * | 1993-11-26 | 1997-02-04 | Toshiba Kikai Kabushiki Kaisha | Table turning apparatus |
| EP0810062A1 (en) * | 1996-05-31 | 1997-12-03 | DECKEL MAHO GmbH | Drive assembly |
| CN1473683A (en) * | 2003-06-26 | 2004-02-11 | 上海磁悬浮交通发展有限公司 | Backlash eliminating driving mechanism for transverse motion of digitally controlled machine tool |
| CN2656077Y (en) * | 2003-08-27 | 2004-11-17 | 江苏多棱数控机床股份有限公司 | Double gear wheel backlash speed reducing drive structure |
| CN201009005Y (en) * | 2006-12-22 | 2008-01-23 | 成都发动机（集团）有限公司 | Full-automatic hydraulic pressure fixture of broaching machine |
-
2015
- 2015-12-02 CN CN201510875629.5A patent/CN105397552A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5598749A (en) * | 1993-11-26 | 1997-02-04 | Toshiba Kikai Kabushiki Kaisha | Table turning apparatus |
| EP0810062A1 (en) * | 1996-05-31 | 1997-12-03 | DECKEL MAHO GmbH | Drive assembly |
| CN1473683A (en) * | 2003-06-26 | 2004-02-11 | 上海磁悬浮交通发展有限公司 | Backlash eliminating driving mechanism for transverse motion of digitally controlled machine tool |
| CN2656077Y (en) * | 2003-08-27 | 2004-11-17 | 江苏多棱数控机床股份有限公司 | Double gear wheel backlash speed reducing drive structure |
| CN201009005Y (en) * | 2006-12-22 | 2008-01-23 | 成都发动机（集团）有限公司 | Full-automatic hydraulic pressure fixture of broaching machine |
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Application publication date: 20160316 |
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