CN107676463A - The gap that disappears straight spur gear - Google Patents
The gap that disappears straight spur gear Download PDFInfo
- Publication number
- CN107676463A CN107676463A CN201710976273.3A CN201710976273A CN107676463A CN 107676463 A CN107676463 A CN 107676463A CN 201710976273 A CN201710976273 A CN 201710976273A CN 107676463 A CN107676463 A CN 107676463A
- Authority
- CN
- China
- Prior art keywords
- pinion
- fixture block
- spring
- macropore
- master gear
- 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
Links
- 238000010276 construction Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000036262 stenosis Effects 0.000 description 1
- 208000037804 stenosis Diseases 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/17—Toothed wheels
- F16H55/18—Special devices for taking up backlash
-
- 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
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
Abstract
One kind disappears gap straight spur gear, including master gear 1, pinion 2, fixture block 3, spring 4；The master gear 1 is provided with the cylinder boss coaxial with master gear 1, and sliding surface 11 is processed on cylinder boss；The pinion 2 is provided with macropore 21, and spring hole 22 is provided with the wall of macropore 21, and the cylinder boss of master gear 1 is inserted in the macropore 21 of pinion 2；The fixture block 3 is provided with bottom surface 31, arcwall face 32, pit 33, the bottom surface 31 of fixture block 3 and the sliding contact of sliding surface 11 of master gear 1, the arcwall face 32 of fixture block 3 contacts with the wall sliding of macropore 21 of pinion 2, and the distance close to one side of pit 33 to bottom surface 31 on arcwall face 32 is more than opposite side to the distance of bottom surface 31；The spring 4 is stage clip, and the both ends of spring 4 are respectively embedded into the spring hole 22 of pinion 2 and the pit 33 of fixture block 3.This gap straight spur gear that disappears have can compensate automatically after elastic power restriction of the driving force not by spring, wheel odontotripsis backlash, it is simple in construction the advantages of.
Description
Technical field
The present invention relates to gear transmission technology field, and in particular to one kind disappears gap straight spur gear.
Background technology
Gear has backlash with engaging for gear, in the case that gear driving pair needs positive and negative rotation, can produce
Certain space CCD camera, reduce transmission accuracy.Therefore, in the device for needing accurately to be driven, must use can eliminate backlash
Gear is to eliminate space CCD camera.The gap that disappears straight spur gear is exactly a kind of conventional gear that can eliminate backlash.Application number
For the CN201220072972.8 patent description basic structure of the gap straight spur gear that disappears, in spur gear transmission pair
One end design two identical gear sheets, the axially assembling side by side of two gear sheets, and two gear sheets are involved with spring, utilize spring
Elastic force relatively rotates two gear sheets, and two gear sheets flank profil originally aligned with each other just generates a small amount of dislocation, with engaging tooth
The flank profil fitting of wheel.In this way, either rotating forward or inverting, this two gear sheet tightly engages with meshing gear, so as to reach
Eliminate the purpose of backlash.But the gap straight spur gear that disappears of this structure has a disadvantage that：1. driving force is limited to bullet
The elastic force of spring, if driving force exceedes elastic force, it can still produce backlash；If 2. two gear sheets after the gap that disappears are fastened
Connection, driving force are then not limited to the elastic force of spring.But backlash automatic compensation function is thus lost, flank profil is transported for a long time
After damage of going round and round a millstone, new backlash can be produced again.
The content of the invention
It is an object of the invention to provide a kind of driving force not by the elastic power restriction of spring, and backlash can be compensated automatically
The gap straight spur gear that disappears.
To achieve the above object, the present invention adopts the technical scheme that：One kind disappears gap straight spur gear, including main tooth
Wheel, pinion, fixture block, spring；The master gear is provided with the cylinder boss with master gear coaxial line, is processed on cylinder boss
Sliding surface, sliding surface are distributed on the face of cylinder of cylinder boss；Tooth profiles, parameter, the number of teeth and the master gear of the pinion
Identical, pinion is provided with the macropore with pinion coaxial line, and the cylinder boss of master gear is inserted in the macropore of pinion, and cylinder is convex
The face of cylinder of platform and the macropore of pinion are rotatably assorted, and spring hole is provided with the big hole wall of pinion；The fixture block is provided with bottom surface, arc
Shape face, pit, the bottom surface of fixture block and the sliding surface sliding contact of master gear, the arcwall face of fixture block and the big wall surface of the hole of pinion are slided
Dynamic contact, the distance close to one side of pit to bottom surface on arcwall face are more than opposite side to the distance of bottom surface；The spring is pressure
Spring, the quantity of spring is identical with the quantity of fixture block, and the both ends of spring are respectively embedded into the spring hole of pinion and the pit of fixture block.
The gap straight spur gear of the present invention that disappears can improve.Increase screw rod, the pinion is provided with tapped through hole, institute
State fixture block and be provided with blind hole, the screw rod screws with tapped through hole.When assembling is with decomposing, screw rod is screwed in, screw rod insertion fixture block
In blind hole and promote the elastic force direction of fixture block against spring to move, fixture block is disengaged with pinion, master gear, consequently facilitating assembling
With decomposition.
The gap straight spur gear of the present invention that disappears can also improve.Increasing baffle plate, screw, the baffle plate is in annular shape,
The external diameter of baffle plate is slightly larger than the aperture of the macropore of pinion, and the screw is screwed into the cylinder boss for being opened in master gear through baffle plate
In screw on end face.
After the gap straight spur gear of the present invention that disappears has elastic power restriction of the driving force not by spring, wheel odontotripsis
Can compensate automatically backlash, it is simple in construction the advantages of.
Brief description of the drawings
The content expressed by each accompanying drawing of this specification and the mark in accompanying drawing are briefly described below：
Fig. 1 is the structural representation of the gap straight spur gear of the invention that disappears；
Fig. 2 is the structural representation of master gear；
Fig. 3 is the left view of the master gear shown in Fig. 2；
Fig. 4 shows the sectional structure of pinion；
Fig. 5 shows the sectional structure of fixture block；
Fig. 6 shows the structure of the gap straight spur gear that disappears after increasing screw rod, baffle plate；
Fig. 7 is Fig. 6 A-A half sectional views.
Mark in accompanying drawing for：1 --- master gear, 1-1 --- sliding surface, 1-2 --- the face of cylinder, 2 --- pinion, 2-
1 --- macropore, 2-2 --- spring hole, 2-3 --- tapped through hole, 3 --- fixture block, 3-1 --- bottom surface, 3-2 --- arcwall face, 3-
3 --- pit, 3-4 --- blind hole, 4 --- spring, 5 --- meshing gear, 6 --- screw rod, 7 --- baffle plate, 8 --- screw,
9 --- screw.
Embodiment
The gap straight spur gear as shown in figure 1, one kind disappears, including master gear 1, pinion 2, fixture block 3, spring 4；As Fig. 1,
Shown in Fig. 2, Fig. 3, the master gear 1 is provided with the cylinder boss with the axis coaxle of master gear 1, and three are processed on cylinder boss
Individual sliding surface 1-1, sliding surface 1-1 are evenly distributed on the face of cylinder 1-2 of cylinder boss；As Figure 1 and Figure 4, the pinion
2 tooth profiles, parameter, the number of teeth are identical with master gear 1, and pinion 2 is provided with the macropore 2-1 with the axis coaxle of pinion 2, main tooth
In the macropore 2-1 of the cylinder boss insertion pinion 2 of wheel 1, the face of cylinder 1-2 of cylinder boss rotates with the macropore 2-1 of pinion 2
Coordinate, spring hole 2-2, spring hole 2-2 quantity and the sliding surface 1-1 quantity phases of master gear 1 are provided with the macropore 2-1 walls of pinion 2
It is uniformly distributed circumferentially together and on macropore 2-1 walls；As shown in Figure 1, shown in Figure 5, the quantity of the fixture block 3 and the slip of master gear 1
Face 1-1 quantity is identical, and fixture block 3 is provided with bottom surface 3-1, arcwall face 3-2, pit 3-3, the bottom surface 3-1 of fixture block 3 and the cunning of master gear 1
Dynamic face 1-1 sliding contacts, the arcwall face 3-2 of fixture block 3 contact with the macropore 2-1 wall slidings of pinion 2, arcwall face 3-2 arc
Shape can increase the contact area of fixture block 3 and the macropore 2-1 walls of pinion 2, as shown in figure 5, close to pit on arcwall face 3-2
3-3 one side is more than opposite side to bottom surface 3-1 distance to bottom surface 3-1 distance；As shown in figure 1, the spring 4 is stage clip, bullet
The quantity of spring 4 is identical with the quantity of fixture block 3, and the both ends of spring 4 are respectively embedded into the spring hole 2-2 of pinion 2 and the pit 3- of fixture block 3
In 3, the resilient force pinion 2 of spring 4 rotates clockwise, while the resilient force fixture block 3 of spring 4 is around master gear 1
Axis rotates counterclockwise, and fixture block 3 drives master gear 1 to rotate counterclockwise again, and so, pinion 2 generates suitable relative to master gear 1
Hour hands rotate, and the flank profil originally aligned with each other with master gear 1 of pinion 2 just generates a small amount of dislocation, so as to reach elimination flank
The purpose in gap.Because fixture block 3 is under the resilient force of spring 4 towards the sliding surface 1-1 of master gear 1 and the macropore of pinion 2
The narrow slit direction that 2-1 walls are formed is slided, and the elastic force of spring 4 is bigger, and fixture block 3 is more toward sliding surface 1-1 and macropore 2-1 walls
The stenosis that face is formed is slided, so, the elastic force of spring 4 is bigger, the arcwall face 3-2 of the fixture block 3 and macropore 2-1 of pinion 2
The bottom surface 3-1 of wall and fixture block 3 and master gear 1 sliding surface 1-1 paste tighter, and the pressure between them is bigger, fixture block 3
Rubbing between the bottom surface 3-1 of the macropore 2-1 walls and fixture block 3 of arcwall face 3-2 and pinion 2 and the sliding surface 1-1 of master gear 1
It is bigger to wipe power.
As shown in figure 1, when meshing gear 5 drives the gap straight spur gear of the present invention that disappears to rotate clockwise, nibble
The gear teeth for closing gear 5 push directly on the gear teeth of master gear 1, because the flank profil of master gear 1 and pinion 2 misplaces and eliminates gap
The backlash of straight spur gear and meshing gear 5, it is achieved that the nothing when gap straight spur gear that disappears rotates clockwise
Gap is driven.
As shown in figure 1, when meshing gear 5 drives the gap straight spur gear of the present invention that disappears to rotate counterclockwise, nibble
The gear teeth for closing gear 5 promote the gear teeth of pinion 2, produce pinion 2 and rotate counterclockwise, now, the macropore 2-1 of pinion 2
The elastic force that frictional force and spring 4 between wall and the arcwall face 3-2 of fixture block 3 are applied on fixture block 3 drive fixture block 3 with
Pinion 2 synchronously rotates counterclockwise, meanwhile, the frictional force between the bottom surface 3-1 of fixture block 3 and the sliding surface 1-1 of master gear 1 is driven
Master gear 1 also synchronously rotates counterclockwise with fixture block 3, because the gear teeth of the gear teeth of meshing gear 5 and pinion 2, pinion 2 is big
Equal gapless between the arcwall face 3-2 of hole 2-1 walls and fixture block 3, the bottom surface 3-1 of fixture block 3 and master gear 1 sliding surface 1-1, institute
To realize the gapless driving when gap straight spur gear that disappears rotates counterclockwise.
As shown in figure 1, during the gap straight spur gear that disappears gapless driving counterclockwise, the driving force that can transmit not only takes
Certainly in the elastic force of spring 4, the macropore 2-1 walls of pinion 2 and the arcwall face 3-2 of fixture block 3, the bottom surface of fixture block 3 are more dependent upon
Frictional force between 3-1 and the sliding surface 1-1 of master gear 1, so, during the gap that disappears straight spur gear is counterclockwise gapless driving
Driving force is far longer than the elastic force of spring 4.
For the ease of assembling and decomposing, the gap straight spur gear of the present invention that disappears can improve.As shown in fig. 6, increase
Screw rod 6, the quantity of the screw rod 6 is identical with the quantity of fixture block 3, and the pinion 2 is provided with tapped through hole 2-3, tapped through hole 2-3's
Quantity is identical with the quantity of screw rod 6 and is uniformly distributed on the circumferencial direction of pinion 2, and the fixture block 3 is provided with blind hole 3-4, screw rod 6
Screwed with tapped through hole 2-3.The present invention is when assembling is with decomposing, rotary screw 6, the macropore 2- of one end of screw rod 6 from pinion 2
1 wall screws out, and in the blind hole 3-4 of the insertion fixture block 3 of screw rod 6 and promotes the elastic force direction of fixture block 3 against spring 4 to move, makes originally
The fixture block 3 being stuck between the macropore 2-1 walls of pinion 2, the sliding surface 1-1 of master gear 1 disengages with pinion 2, master gear 1,
Consequently facilitating assembling and decomposition.Screw rod 6 is screwed out, screw rod 6 is removed from the blind hole 3-4 of fixture block 3, screw rod 6 is applied on fixture block 3
The power of 4 elastic force direction of inverse spring eliminate, spring 4 promotes fixture block 3 towards the sliding surface 1-1 of master gear 1 and the macropore of pinion 2
The narrow slit direction that 2-1 walls are formed is slided, the arc of the bottom surface 3-1 of the fixture block 3 and sliding surface 1-1 of master gear 1 and fixture block 3
Face 3-2 and pinion 2 macropore 2-1 walls are adjacent to, and so, the gap that disappears straight spur gear is put into working condition.
The gap straight spur gear of the present invention that disappears can also improve.As shown in Figure 6, Figure 7, baffle plate 7, screw 8, institute are increased
Baffle plate 7 is stated to twist through baffle plate 7 in annular shape, aperture of the external diameter slightly larger than the macropore 2-1 of pinion 2 of baffle plate 7, the screw 8
Enter to be opened in the end face that baffle plate 7 in the screw 9 on the cylinder boss end face of master gear 1, is fixed on to the cylinder boss of master gear 1
On, there is appropriate gap between baffle plate 7 and pinion 2.The effect of baffle plate 7 be pinion 2 is limited in master gear 1 cylinder it is convex
On platform, stop that pinion 2 is moved axially out of the cylinder boss of master gear 1, and do not influence pinion 2 and rotated relative to master gear 1,
And be closed spring 4, fixture block 3, prevent spring 4, fixture block 3 from ejecting.
Claims (3)
- The gap straight spur gear 1. one kind disappears, it is characterised in that：Including master gear (1), pinion (2), fixture block (3), spring (4)；The master gear (1) is provided with the cylinder boss with master gear (1) coaxial line, and sliding surface (1- is processed on cylinder boss 1), sliding surface (1-1) is distributed on the face of cylinder (1-2) of cylinder boss；The tooth profiles of the pinion (2), parameter, the number of teeth Identical with master gear (1), pinion (2) is provided with the macropore (2-1) with pinion (2) coaxial line, the cylinder boss of master gear (1) Insert in the macropore (2-1) of pinion (2), the face of cylinder (1-2) of cylinder boss rotates with the macropore (2-1) of pinion (2) matches somebody with somebody Close, spring hole (2-2) is provided with macropore (2-1) wall of pinion (2)；The fixture block (3) is provided with bottom surface (3-1), arcwall face (3- 2), pit (3-3), the bottom surface (3-1) of fixture block (3) and sliding surface (1-1) sliding contact of master gear (1), the arc of fixture block (3) Face (3-2) contacts with macropore (2-1) wall sliding of pinion (2), close to one side of pit (3-3) on arcwall face (3-2) Distance to bottom surface (3-1) is more than opposite side to bottom surface (3-1) distance；The spring (4) is stage clip, the quantity of spring (4) with The quantity of fixture block (3) is identical, and the both ends of spring (4) are respectively embedded into the spring hole (2-2) of pinion (2) and the pit (3- of fixture block (3) 3) in.
- 2. the gap straight spur gear according to claim 1 that disappears, it is characterised in that：Also include screw rod (6), the pinion (2) tapped through hole (2-3) is provided with, the fixture block (3) is provided with blind hole (3-4), and the screw rod (6) screws with tapped through hole (2-3).
- 3. the gap straight spur gear according to claim 1 or 2 that disappears, it is characterised in that：Also include baffle plate (7), screw (8), the baffle plate (7) is in annular shape, and the external diameter of baffle plate (7) is slightly larger than the aperture of the macropore (2-1) of pinion (2), the spiral shell Nail (8) is screwed into the screw (9) being opened on the cylinder boss end face of master gear (1) through baffle plate (7).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710976273.3A CN107676463A (en) | 2017-10-19 | 2017-10-19 | The gap that disappears straight spur gear |
| PCT/CN2018/000152 WO2019075931A1 (en) | 2017-10-19 | 2018-04-23 | Straight tooth cylindrical gear for eliminating gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710976273.3A CN107676463A (en) | 2017-10-19 | 2017-10-19 | The gap that disappears straight spur gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107676463A true CN107676463A (en) | 2018-02-09 |
Family
ID=61141630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710976273.3A Pending CN107676463A (en) | 2017-10-19 | 2017-10-19 | The gap that disappears straight spur gear |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107676463A (en) |
| WO (1) | WO2019075931A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317234A (en) * | 2018-04-12 | 2018-07-24 | 常州机电职业技术学院 | Straight spur gear with the gap function that disappears |
| WO2019075931A1 (en) * | 2017-10-19 | 2019-04-25 | 常州机电职业技术学院 | Straight tooth cylindrical gear for eliminating gap |
| CN110159741A (en) * | 2019-06-26 | 2019-08-23 | 潍柴动力股份有限公司 | A kind of gear transmission structure and pinion unit |
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| US4683767A (en) * | 1984-01-30 | 1987-08-04 | Weyer Paul P | Rotary actuator with backlash elmination |
| DE102005041357A1 (en) * | 2004-09-07 | 2006-04-06 | Honda Motor Co., Ltd. | Shearing gear wheel for motor vehicle, has adjacent gear wheel with number of tooth whose tooth flank angle is coined to obtain laminar contact with each tooth of main gear wheel, and spring arranged between gear wheels |
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| DE102005041357A1 (en) * | 2004-09-07 | 2006-04-06 | Honda Motor Co., Ltd. | Shearing gear wheel for motor vehicle, has adjacent gear wheel with number of tooth whose tooth flank angle is coined to obtain laminar contact with each tooth of main gear wheel, and spring arranged between gear wheels |
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| WO2019075931A1 (en) * | 2017-10-19 | 2019-04-25 | 常州机电职业技术学院 | Straight tooth cylindrical gear for eliminating gap |
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| CN110159741A (en) * | 2019-06-26 | 2019-08-23 | 潍柴动力股份有限公司 | A kind of gear transmission structure and pinion unit |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019075931A1 (en) | 2019-04-25 |
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Application publication date: 20180209 |