CN204784483U - Two worm gear speed reducer machines of zero clearance - Google Patents
Two worm gear speed reducer machines of zero clearance Download PDFInfo
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- CN204784483U CN204784483U CN201520481969.5U CN201520481969U CN204784483U CN 204784483 U CN204784483 U CN 204784483U CN 201520481969 U CN201520481969 U CN 201520481969U CN 204784483 U CN204784483 U CN 204784483U
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- worm
- worm screw
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- speed reducer
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Abstract
The utility model relates to a two worm gear speed reducer machines of zero clearance, worm gear transmission structure in locating the shell, its characterized in that: the worm wheel has two, is first worm wheel and second worm wheel respectively, and coaxial arrangement is on power output shaft, and power output shaft stretches out the preceding terminal surface of shell, the worm has two, be respectively with the first worm of worm gear transmission meshing and with the second worm of the 2nd worm gear transmission meshing, left end and the motor drive of first worm are connected, the left end of second worm as adjusted end with locate the cooperation of the left clearance adjustment part of shell and slide along its axial in order can finally drive the second worm, be in the same place through the synchronous transmission structural connection between first worm and the second worm, the synchronous co -rotating of first worm and second worm is ensured to the synchronous transmission structure. This speed reducer simple structure, zero clearance, high accuracy, low in manufacturing cost is honest and clean in production, can adopt the production of traditional conventional worm gear speed reducer machine production line, and the production technology is the same basically, does not need the overlapping investment.
Description
Technical field
The utility model relates to the reducing gear that a kind of machinery uses, particularly relate to a kind of gapless double worm and gear speed reducer, this speed reducer be suitable for precision optical machinery motion, numerical control accurately locates, articulated robot, mechanism hand, calibration, carrying, the contour end numerical control field of multi-axis NC Machine Tools.
Background technique
Worm-gear speed reducer is widely used in various working machine and numerical control device, the worm-gear speed reducer that current known numerical control device adopts often adopts the slowing-down structure of single worm and worm gear or twin worm worm gear, and the pitch between its worm and worm wheel of speed reducer no matter how making structure to adjust.Owing to manufacturing and the existence of assembly error, certain pitch difference can be there is between general worm and worm wheel, namely there is certain backlass, the machining accuracy impact of this backlass on workpiece is huge, due to the existence of backlass, when output shaft is subject to contrary tangential force, can produces and beat, the accuracy of impact moment transmission, this situation is especially obvious on the worm-gear speed reducer of large gear ratio.Therefore common worm-gear speed reducer can only be used for the occasion not high to required precision.Although can be realized the transmission of degree of precision by the processing and assembling precision promoting worm and gear and other accessory, it greatly will increase the cost of speed reducer.And speed reducer after a long time use, because long-term running certainly leads to wearing and tearing, thus produce backlass, and gap cannot adjust.
In sum, existing worm-gear speed reducer also needs to be further improved.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of gapless double worm and gear speed reducer eliminating worm and gear backlass between the two for above-mentioned prior art present situation, and the parts involved by the overall structure of this speed reducer are substantially identical compared with traditional speed reducer, traditional worm-gear speed reducer production line can be adopted to produce, production technology is substantially constant, do not need overlapping investment, there is low cost, high-precision advantage.
The utility model solves the problems of the technologies described above adopted technological scheme: a kind of gapless double worm and gear speed reducer, comprise the drive structure of gear worm be located in shell, it is characterized in that: the worm gear in described drive structure of gear worm has two, be respectively the first worm gear and the second worm gear, coaxially be arranged on pto＝power take-off, pto＝power take-off stretches out case nose face; Worm screw in drive structure of gear worm has two, is respectively the first worm screw engaged with the first worm drive and the second worm screw engaged with the second worm drive; Wherein, the left end of the first worm screw is connected to input worm screw as power with motor-driven, and the left end of the second worm screw coordinates finally to drive the second worm screw along its axial slip as adjustment end with the slack adjuster members be located on the left of shell; , linked together between the first worm screw and the second worm screw by synchronization transmission structure, this synchronization transmission structure guarantees the first worm screw and the synchronous rotating Vortex of the second worm screw meanwhile.
Above-mentioned slack adjuster members and head drive mechanism are the gap adjustment screw being threaded in shell left side wall, and adjustment screw the inner, gap to be stretched in shell and contacted with the left side of the second worm screw.Using gap adjustment screw as slack adjuster members, it has that structure is simple, cost is low and easy to adjust, rotary gap is only needed to adjust screw during adjustment, according to screw-driven principle, gap adjustment screw can promote the second worm screw along its axial slip, to eliminate the backlass between the second worm screw and the second worm gear, again because of the axial slip of the second worm screw, the certain small angle of the second worm gear wheel can be driven, second worm gear makes the first worm gear synchronous rotary via pto＝power take-off, therefore synchronously eliminates the backlass between the first worm screw and the first worm gear.Certain gap adjustment screw also can adopt other similar structure to substitute.Above gap adjustment screw rotate to be manual tune.
Above-mentioned slack adjuster members is the gap adjustment screw being threaded in shell left side wall, axial perforation is provided with in gap adjustment screw, second worm screw by bearing be bearing in gap adjustment screw perforation in, adjustment screw in gap is also arranged with torsion spring, a free end of this torsion spring is fixed on gap adjustment screw, and another free end of torsion spring is fixed on shell left side wall.The rotation of above gap screw can realize automatic adjustment, as there is backlass, second worm screw just has axially the trend of moving, at this moment gap adjustment screw will under torsion spring effect, rotate, gap is adjusted in screw opposite shell move, final drive second worm screw is along its axial slip, to eliminate the backlass between the second worm and wheel, again because of, the axial slip of the second worm screw, can drive the certain small angle of worm gear wheel, therefore synchronously eliminates the backlass between the first worm and wheel.Make this gap adjust screw by the effect of torsion spring and have the effect automatically eliminating backlass.
The right-hand member of above-mentioned first worm screw and the second worm screw all stretches out the right side wall of housing, and described synchronization transmission structure is arranged between the right-hand member of the first worm screw and the second worm screw.
Above-mentioned synchronization transmission structure comprises the first synchronous pulley being arranged on the first worm screw right-hand member, is arranged on the second synchronous pulley of the second worm screw right-hand member, forms closed ring-type after having a Timing Belt to walk around the first synchronous pulley and the second synchronous pulley.The Synchronous Transmission principle of this synchronization structure ingenious utilization Timing Belt synchronizing wheel, motor power is allowed to input Synchronous Transmission to the first worm screw, the spindle nose of the first worm screw fixes the first synchronous pulley, first synchronous pulley synchronously passes to the second synchronous pulley in the same way through Timing Belt, second synchronous pulley drives the second worm screw synchronous backward running, first worm screw and the second worm screw realize relative synchronization and operate in the same way, drive pto＝power take-off to rotate and output power.
Above-mentioned synchronization transmission structure can also be mounted in the first sprocket wheel of the first worm screw right-hand member, is arranged on the second sprocket wheel of the second worm screw right-hand member, and the first sprocket wheel and the second sprocket wheel are meshed together by Transmitted chains transmission.
Compared with prior art, the utility model has the advantage of: the right-hand member of the first worm screw and the second worm screw is linked together by synchronization transmission structure, guarantee the first worm screw and the synchronous rotating Vortex of the second worm screw, the left end of the second worm screw coordinates finally to drive the second worm screw along its axial slip as adjustment end with the slack adjuster members be located on the left of shell simultaneously, like this as there is backlass, then only slack adjuster members need be passed through, drive the second worm screw axial slip, to eliminate the backlass between the second worm screw and the second worm gear, again because of the axial slip of the second worm screw, the certain small angle of the second worm gear wheel can be driven, second worm gear makes the first worm gear synchronous rotary via pto＝power take-off, therefore the backlass between the first worm screw and the first worm gear is synchronously eliminated.This speed reducer keeps outside conventional worm-gear speed reducer good characteristic, also have that structure is simple, ripe, stable, gapless, highi degree of accuracy, the advantage that manufacturing cost is cheap, and traditional conventional worm-gear speed reducer production line can be adopted to produce, production technology is substantially the same, do not need overlapping investment, low cost.
Accompanying drawing explanation
Fig. 1 is the perspective view one of the utility model embodiment;
Fig. 2 is the perspective view two of the utility model embodiment;
Fig. 3 is the perspective view after the utility model first embodiment removes shell;
Fig. 4 is the plan view after the utility model first embodiment removes shell;
Fig. 5 is the slack adjuster members structure of the another kind of structural type of the utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in Fig. 1 ~ 5, it is a preferred embodiment of the present utility model.
A kind of gapless double worm and gear speed reducer, comprise the drive structure of gear worm be located in shell 9, shell 9 in figure only draws lower part structure, worm gear in drive structure of gear worm has two, be respectively the first worm gear 1 and the second worm gear 2, coaxially be arranged on pto＝power take-off 4, pto＝power take-off 4 stretches out case nose face; Worm screw in drive structure of gear worm has two, is respectively the first worm screw 3 engaged with the first worm gear 1 transmission and the second worm screw 5 engaged with the second worm gear 2 transmission; Wherein, the left end of the first worm screw 3 and motor 6 are in transmission connection to input worm screw as power, and the left end of the second worm screw 5 coordinates finally to drive the second worm screw 5 along its axial slip as adjustment end with the slack adjuster members be located on the left of shell 1; , linked together between the first worm screw 3 and the second worm screw 5 by synchronization transmission structure, this synchronization transmission structure guarantees the first worm screw 3 and the synchronous rotating Vortex of the second worm screw 5 meanwhile.
Slack adjuster members is the gap adjustment screw 7 being threaded in shell 1 left side wall, and adjustment screw 7 the inner, gap to be stretched in shell 1 and contacted with the left side of the second worm screw 5.Rotary gap is only needed to adjust screw 7 during adjustment, according to screw-driven principle, gap adjustment screw 7 can promote the second worm screw 5 along its axial slip, to eliminate the backlass between the second worm screw 5 and the second worm gear 2, again because of the axial slip of the second worm screw 2, the second worm gear 2 can be driven to rotate certain small angle, and the second worm gear 2 makes the first worm gear 1 synchronous rotary via pto＝power take-off 4, therefore synchronously eliminates the backlass between the first worm screw 3 and the first worm gear 1.Certain gap adjustment screw also can adopt other similar structure to substitute.
As shown in Figure 5, certain slack adjuster members also can be the gap adjustment screw 7 being threaded in shell 1 left side wall, axial perforation is provided with in gap adjustment screw 7, second worm screw 5 by bearing be bearing in gap adjustment screw 7 perforation in, adjustment screw 7 in gap is also arranged with torsion spring 71, a free end of this torsion spring 71 is fixed on gap adjustment screw 7, and another free end of torsion spring 71 is fixed on shell 1 left side wall.
The rotation of this gap screw can realize automatic adjustment, as there is backlass, second worm screw just has axially the trend of moving, at this moment gap adjustment screw 7 will under torsion spring 71 acts on, rotate, gap is adjusted in screw 7 opposite shell move, final drive second worm screw 5 is along its axial slip, to eliminate the backlass between the second worm screw 5 and worm gear 2, again because of, the axial slip of the second worm screw 5, can drive worm gear 2 to rotate certain small angle, therefore synchronously eliminates the backlass between the first worm screw 3 and worm gear 2.Make this gap adjust screw 7 by the effect of torsion spring 71 and have the effect automatically eliminating backlass.
The right-hand member of the first worm screw 3 and the second worm screw 5 all stretches out the right side wall of housing 9, and synchronization transmission structure is arranged between the first worm screw 3 and the right-hand member of the second worm screw 5.
Synchronization transmission structure comprises the first synchronous pulley 31 being arranged on the first worm screw 3 right-hand member, is arranged on the second synchronous pulley 51 of the second worm screw 5 right-hand member, forms the ring-type closed after having a Timing Belt 8 to walk around the first synchronous pulley 31 and the second synchronous pulley 51.The Synchronous Transmission principle of this synchronization structure ingenious utilization Timing Belt synchronizing wheel, motor power is allowed to input Synchronous Transmission to the first worm screw 3, the spindle nose of the first worm screw 3 fixes the first synchronous pulley 31, first synchronous pulley 31 synchronously passes to the second synchronous pulley 51 in the same way through Timing Belt 8, second synchronous pulley 51 drives the second worm screw 5 synchronous backward running, first worm screw 3 and the second worm screw 5 realize relative synchronization and operate in the same way, drive pto＝power take-off to rotate and output power.
Certain synchronization transmission structure also can adopt structure similar to Example 3, comprises the first sprocket wheel being arranged on the first worm screw right-hand member, is arranged on the second sprocket wheel of the second worm screw right-hand member, and the first sprocket wheel and the second sprocket wheel are meshed together by the Transmitted chains transmission of ring-type.
Although more than describe in detail the preferred embodiments of the present invention, character narrate of the present invention is difficult to complete clarity, and every have identical or close technical pattern with accompanying drawing, all belongs within protection scope of the present invention.
Claims (6)
1. a gapless double worm and gear speed reducer, comprise the drive structure of gear worm be located in shell (9), it is characterized in that: the worm gear in described drive structure of gear worm has two, be respectively the first worm gear (1) and the second worm gear (2), coaxially be arranged on pto＝power take-off (4), pto＝power take-off (4) stretches out case nose face; Worm screw in drive structure of gear worm has two, is respectively the first worm screw (3) engaged with the first worm gear (1) transmission and the second worm screw (5) engaged with the second worm gear (2) transmission; Wherein, left end and the motor (6) of the first worm screw (3) are in transmission connection to input worm screw as power, and the left end of the second worm screw (5) coordinates finally to drive the second worm screw (5) along its axial slip as adjustment end with the slack adjuster members being located at shell (9) left side; , linked together between the first worm screw (3) and the second worm screw (5) by synchronization transmission structure, this synchronization transmission structure guarantees the first worm screw (3) and the synchronous rotating Vortex of the second worm screw (5) meanwhile.
2. gapless double worm and gear speed reducer according to claim 1, it is characterized in that: described slack adjuster members is for being threaded in gap adjustment screw (7) of shell (1) left side wall, and adjustment screw (7) the inner, gap to be stretched in shell (1) and contacted with the left side of the second worm screw (5).
3. gapless double worm and gear speed reducer according to claim 1, it is characterized in that: described slack adjuster members is for being threaded in gap adjustment screw (7) of shell (1) left side wall, axial perforation is provided with in gap adjustment screw (7), described second worm screw (5) by bearing be bearing in gap adjustment screw (7) perforation in, described gap adjustment screw (7) is also arranged with torsion spring (71), a free end of this torsion spring (71) is fixed on gap adjustment screw (7), another free end of torsion spring (71) is fixed on shell (1) left side wall.
4. gapless double worm and gear speed reducer according to claim 1, it is characterized in that: the right-hand member of described first worm screw (3) and the second worm screw (5) all stretches out the right side wall of housing, and described synchronization transmission structure is arranged between the right-hand member of the first worm screw (3) and the second worm screw (5).
5. gapless double worm and gear speed reducer according to claim 4, it is characterized in that: described synchronization transmission structure comprises the first synchronous pulley (31) being arranged on the first worm screw (3) right-hand member, be arranged on second synchronous pulley (51) of the second worm screw (5) right-hand member, have a Timing Belt (8) to walk around the first synchronous pulley (31) and the second synchronous pulley (51) forms closed ring-type afterwards.
6. gapless double worm and gear speed reducer according to claim 4, it is characterized in that: described synchronization transmission structure comprises the first sprocket wheel being arranged on the first worm screw right-hand member, be arranged on the second sprocket wheel of the second worm screw right-hand member, the first sprocket wheel and the second sprocket wheel are meshed together by Transmitted chains transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520481969.5U CN204784483U (en) | 2015-07-01 | 2015-07-01 | Two worm gear speed reducer machines of zero clearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520481969.5U CN204784483U (en) | 2015-07-01 | 2015-07-01 | Two worm gear speed reducer machines of zero clearance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204784483U true CN204784483U (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520481969.5U Expired - Fee Related CN204784483U (en) | 2015-07-01 | 2015-07-01 | Two worm gear speed reducer machines of zero clearance |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626842A (en) * | 2016-03-18 | 2016-06-01 | 广州阳普医疗科技股份有限公司 | Eliminate backlash subassembly |
| CN107084839A (en) * | 2017-06-06 | 2017-08-22 | 青岛科技大学 | The closed Worm and Worm Gear Driving experimental bench of mechanical output stream |
| CN109340325A (en) * | 2018-11-19 | 2019-02-15 | 淮南联合大学 | A kind of new type worm wheel formula speed changer and its method for changing speed |
| CN109630618A (en) * | 2019-01-17 | 2019-04-16 | 杭州星河传动机械研究院有限公司 | A kind of synchronous high-mechanic speed reducer |
| CN110375033A (en) * | 2019-06-10 | 2019-10-25 | 杭州杭正电子科技有限公司 | A kind of Vehicular display device overturning drive device |
| CN112853306A (en) * | 2021-01-07 | 2021-05-28 | 广东开放大学（广东理工职业学院） | Magnetic coupling transmission mechanism for realizing workpiece rotation |
-
2015
- 2015-07-01 CN CN201520481969.5U patent/CN204784483U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626842A (en) * | 2016-03-18 | 2016-06-01 | 广州阳普医疗科技股份有限公司 | Eliminate backlash subassembly |
| CN105626842B (en) * | 2016-03-18 | 2018-05-29 | 广州阳普医疗科技股份有限公司 | Eliminate backlash subassembly |
| CN107084839A (en) * | 2017-06-06 | 2017-08-22 | 青岛科技大学 | The closed Worm and Worm Gear Driving experimental bench of mechanical output stream |
| CN109340325A (en) * | 2018-11-19 | 2019-02-15 | 淮南联合大学 | A kind of new type worm wheel formula speed changer and its method for changing speed |
| CN109630618A (en) * | 2019-01-17 | 2019-04-16 | 杭州星河传动机械研究院有限公司 | A kind of synchronous high-mechanic speed reducer |
| CN110375033A (en) * | 2019-06-10 | 2019-10-25 | 杭州杭正电子科技有限公司 | A kind of Vehicular display device overturning drive device |
| CN112853306A (en) * | 2021-01-07 | 2021-05-28 | 广东开放大学（广东理工职业学院） | Magnetic coupling transmission mechanism for realizing workpiece rotation |
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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: 20151118 Termination date: 20170701 |