CN203285966U - Double-tooth and staggered tooth gap controlling device - Google Patents
Double-tooth and staggered tooth gap controlling device Download PDFInfo
- Publication number
- CN203285966U CN203285966U CN201320305777XU CN201320305777U CN203285966U CN 203285966 U CN203285966 U CN 203285966U CN 201320305777X U CN201320305777X U CN 201320305777XU CN 201320305777 U CN201320305777 U CN 201320305777U CN 203285966 U CN203285966 U CN 203285966U
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- driving wheel
- follower
- ball grooves
- transmission shaft
- drive wheel
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Abstract
The utility model discloses a double-tooth and staggered tooth gap controlling device, which comprises a drive shaft, a first drive wheel, a second drive wheel and a driven wheel, wherein the first drive wheel is connected fixedly to the drive shaft, the tooth width of both the first drive wheel and the second drive wheel is less than the space width of the driven wheel, the first drive wheel is maintained engaged with the driven wheel, the second drive wheel is equipped with multiple ball grooves on the inner wall of a shaft hole, the ball grooves are also positioned on parts of the outer wall of the drive shaft which are corresponding to the ball grooves of the second drive wheel, the ball grooves are equipped with several balls inside and positioned at an angle to the axial direction of the drive shaft, the second drive wheel is equipped with a pressing block on the top, wherein the pressing block pushes the second drive wheel to move along the drive shaft and drives the second drive wheel to rotate at an angle during the movement and to be engaged with the driven wheel finally. The double-tooth and staggered tooth gap controlling device in the utility model can control the back clearance between a drive gear and a driven gear according to production demands so as to improve mechanical accuracy and processing quality of work pieces.
Description
Technical field
The utility model relates to precision machine tool and instrument field, especially for both needing zero back clearance transmission, need simultaneously again to meet the bidentate side set backlash control gear of the occasion that can continue to rotate, as the turntable driving mechanism of the revolving table main shaft of turn-milling complex machining center.
Background technique
General in the application of machine tool driving mechanism, gear drive after the use of an end time,, due to the wearing and tearing of the gear teeth, can produce back clearance between the gear teeth of engagement, in the gear transmission occasion of general similar lathe spindle, is to allow that the back clearance between gear exists; After this back clearance refers to the gear engagement, the gap between tooth, still, the occasion that transmission accuracy is had relatively high expectations needs to consider the gear back clearance is eliminated; Another situation is exactly on Compositions of metal-working machines, the turntable driving mechanism is allowed between gear when lathe carries out turning has back clearance to exist, but when milling, with turntable as between the tooth of but wishing gear in the situation of the 4th axle revolving table being zero back clearance, to meet requirement on machining accuracy; Therefore, need a kind of gear drive that can control back clearance of design, to meet the demand of different processing types.Existing tooth space eliminating mechanism structure is more complicated all, and can't control and regulate back clearance, therefore, can't adapt to the application requirements of combined precision lathe.
Summary of the invention
The purpose of this utility model is for the baroque problem of existing tooth space eliminating mechanism described in background technique, and a kind of bidentate side set backlash control gear that can solve foregoing problems is provided.
The technological scheme that realizes the purpose of this utility model is as follows:
a kind of bidentate side set backlash control gear, it comprises transmission shaft, the first driving wheel, the second driving wheel and follower, the first driving wheel is fixedly connected with transmission shaft, the facewidth of the first driving wheel and the second driving wheel is all less than the spacewidth of follower, the first driving wheel and follower keep engagement, the shaft hole inner wall of the second driving wheel is provided with the multiple tracks ball grooves, the outer wall of the transmission shaft position corresponding with the ball grooves of the second driving wheel also is provided with corresponding ball grooves, be provided with several balls in ball grooves, axially arranging at an angle of ball grooves and transmission shaft, top at the second driving wheel is provided with briquetting, briquetting promotes the second driving wheel and moves along transmission shaft, and make the second driving wheel that the rotation of several angle occur in moving process, final and follower meshes.
Briquetting recited above drives by hydraulic oil, and described transmission shaft lower end is provided with filler opening, is provided with oil circuit in transmission shaft, and oil circuit is communicated with the oil pocket on briquetting top.By this set, after filler opening input hydraulic pressure oil, hydraulic oil enters the oil pocket on briquetting top by oil circuit, can promote briquetting drive the second driving wheel and move on transmission shaft.
The facewidth of described the first driving wheel and the second driving wheel is half of follower spacewidth.By this set, after briquetting compressed the second driving wheel, the second driving wheel just in time can be eliminated the back clearance between the first driving wheel and follower.
10 °～30 ° angles that axially are of described ball grooves and transmission shaft arrange.The axial angle of ball grooves and transmission need to calculate at axial displacement amount according to width and second driving wheel of back clearance between the first driving wheel and follower, formula is tga=L/H, wherein a be ball grooves and transmission shafts to angle, L is the width of back clearance between the first driving wheel and follower, H is that the second driving wheel is at axial displacement amount, therefore, by regulate ball grooves and the axial angle of transmission can control the second driving wheel with the follower engagement process in amounts of rotation, and then can control the size of back clearance.
The thickness of described the first driving wheel and the second driving wheel is all less than the thickness of follower.
The thickness of described the first driving wheel and the second driving wheel is half of follower thickness.By this set, under the briquetting effect, after the second driving wheel and follower engagement, the thickness sum of the first driving wheel and the second driving wheel is just in time identical with the thickness of follower.
bidentate side set backlash control gear of the present utility model, its working principle is as follows: when assembling, the first driving wheel and follower keep engagement, therefore, for the situation that does not need to eliminate back clearance, can directly with the first driving wheel, drive follower rotates, realize the transmission of power, when the back clearance between needs elimination the first driving wheel and follower, pass into hydraulic oil from the filler opening of transmission shaft below, after hydraulic oil enters the oil pocket on briquetting top, promoting briquetting moves along transmission shaft, and then oppress the second driving wheel and be subjected to displacement on transmission shaft, because be provided with ball between transmission shaft and the second driving wheel, axially arranging at an angle of ball grooves and transmission shaft, therefore, when the second driving wheel moves, the rotation of several angle can occur in the second driving wheel, after the second driving wheel rotates to an angle, the gear teeth of the second driving wheel just in time mesh with follower, after engagement, briquetting compresses the second driving wheel, make itself and follower keep engagement, the gear teeth of such the first driving wheel and the second driving wheel are engaged on respectively the two ends of the wheel teeth groove of follower, the gear teeth of such the second driving wheel and follower engagement have just been eliminated the back clearance between the first driving wheel and follower, rotate by the driven by motor transmission shaft, effect by the first driving wheel and the second driving wheel transfers a torque to follower again.When need to there be back clearance in machine tooling, only need to remove oil pressure, remove the compression of briquetting to the second driving wheel, such the second driving wheel will be free state,, by this set, can eliminate back clearance or allow according to Production requirement producing back clearance between driving wheel and follower.
Bidentate side set backlash control gear of the present utility model has not only successfully solved the problem that between the gear teeth of the driving wheel of gear drive and follower, back clearance is eliminated, simultaneously can be according to concrete production and processing demand, control the size of back clearance, the precision of machining center is improved.
Description of drawings
Fig. 1 is the structural representation of bidentate side set backlash control gear of the present utility model;
Fig. 2 is ball grooves and the transmission shafts schematic diagram calculation to angle;
In figure, 1 is transmission shaft, and 2 is the first driving wheel, and 3 is the second driving wheel, and 4 is follower, and 5 is ball grooves, and 6 is ball, and 7 is briquetting, and 8 is filler opening, and 9 is oil circuit, and 10 is oil pocket.
Embodiment
Carry out detailed illustrating below in conjunction with accompanying drawing 1 and 2 pairs of embodiments of the present utility model of accompanying drawing:
Embodiment 1
a kind of bidentate side set backlash control gear, it comprises transmission shaft, the first driving wheel, the second driving wheel and follower, the first driving wheel is fixedly connected with transmission shaft, the facewidth of the first driving wheel and the second driving wheel is all less than the spacewidth of follower, the first driving wheel and follower keep engagement, the shaft hole inner wall of the second driving wheel is provided with the multiple tracks ball grooves, the outer wall of the transmission shaft position corresponding with the ball grooves of the second driving wheel also is provided with corresponding ball grooves, be provided with several balls in ball grooves, axially arranging at an angle of ball grooves and transmission shaft, top at the second driving wheel is provided with briquetting, briquetting promotes the second driving wheel and moves along transmission shaft, and make the second driving wheel that the rotation of several angle occur in moving process, final and follower meshes.
In top scheme, described ball grooves 5 arranges with the 10 ° of angles that axially are of transmission shaft 1, is respectively arranged with four corresponding ball grooves 5 on transmission shaft 1 and the second driving wheel 3; The facewidth of described the first driving wheel 2 and the second driving wheel 3 is half of follower 4 spacewidths; The thickness of described the first driving wheel 2 and the second driving wheel 3 be follower 4 thickness half.
In embodiment 1, the facewidth of described the first driving wheel 2 and the second driving wheel 3 is 2/5 of follower 4 spacewidths.
Embodiment 4
In embodiment 1, the thickness of described the first driving wheel 2 and the second driving wheel 3 is 3/5 of follower 4 thickness.
Claims (6)
1. bidentate side set backlash control gear, it is characterized in that: it comprises transmission shaft, the first driving wheel, the second driving wheel and follower, the first driving wheel is fixedly connected with transmission shaft, the facewidth of the first driving wheel and the second driving wheel is all less than the spacewidth of follower, the first driving wheel and follower keep engagement, the shaft hole inner wall of the second driving wheel is provided with the multiple tracks ball grooves, the outer wall of the transmission shaft position corresponding with the ball grooves of the second driving wheel also is provided with corresponding ball grooves, be provided with several balls in ball grooves, axially arranging at an angle of ball grooves and transmission shaft, top at the second driving wheel is provided with briquetting, briquetting promotes the second driving wheel and moves along transmission shaft, and make the second driving wheel that the rotation of several angle occur in moving process, final and follower meshes.
2. bidentate side set backlash control gear according to claim 1, it is characterized in that: described briquetting drives by hydraulic oil, and described transmission shaft lower end is provided with filler opening, is provided with oil circuit in transmission shaft, and oil circuit is communicated with the oil pocket on briquetting top.
3. bidentate side set backlash control gear according to claim 1, it is characterized in that: the facewidth of described the first driving wheel and the second driving wheel is half of follower spacewidth.
4. bidentate side set backlash control gear according to claim 1 is characterized in that: 10 °～30 ° angles that axially are of described ball grooves and transmission shaft arrange.
5. bidentate side set backlash control gear according to claim 1 is characterized in that: the thickness of described the first driving wheel and the second driving wheel is all less than the thickness of follower.
6. bidentate side set backlash control gear according to claim 5, it is characterized in that: the thickness of described the first driving wheel and the second driving wheel is half of follower thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320305777XU CN203285966U (en) | 2013-05-30 | 2013-05-30 | Double-tooth and staggered tooth gap controlling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320305777XU CN203285966U (en) | 2013-05-30 | 2013-05-30 | Double-tooth and staggered tooth gap controlling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203285966U true CN203285966U (en) | 2013-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320305777XU Expired - Lifetime CN203285966U (en) | 2013-05-30 | 2013-05-30 | Double-tooth and staggered tooth gap controlling device |
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| Country | Link |
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| CN (1) | CN203285966U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214325A (en) * | 2013-05-30 | 2014-12-17 | 崴立机电（苏州）有限公司 | Tooth space control device for staggered teeth of double gears |
-
2013
- 2013-05-30 CN CN201320305777XU patent/CN203285966U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214325A (en) * | 2013-05-30 | 2014-12-17 | 崴立机电（苏州）有限公司 | Tooth space control device for staggered teeth of double gears |
| CN104214325B (en) * | 2013-05-30 | 2016-12-28 | 崴立机电（苏州）有限公司 | Bidentate side set backlash controls device |
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| GR01 | Patent grant |