CN206092820U - High accuracy worm drive mechanism that parallel is disengaged - Google Patents
High accuracy worm drive mechanism that parallel is disengaged Download PDFInfo
- Publication number
- CN206092820U CN206092820U CN201620923574.0U CN201620923574U CN206092820U CN 206092820 U CN206092820 U CN 206092820U CN 201620923574 U CN201620923574 U CN 201620923574U CN 206092820 U CN206092820 U CN 206092820U
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- worm
- eccentric
- high accuracy
- eccentric cylinder
- drive mechanism
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Abstract
The utility model provides a high accuracy worm drive mechanism that parallel is disengaged, includes body, hand wheel, worm and worm wheel, and the characterized by worm is installed in eccentric cylinders's eccentric orfice, and the worm is fixed a position by interior retaining ring, and eccentric cylinders horizontal installation is in the through -hole of body, and by outer retaining ring location, the worm wheel is installed at this internally perpendicularly, the worm wheel passes through eccentric cylinders's opening part and worm mesh, the torsional spring suit links to each other with eccentric cylinders, body respectively at eccentric cylinders's little axle head, two torsion arm. The utility model discloses can singlehandedly carry out the switching of worm mesh and the state of disengageing, realize the quick of transmission system and accurate positioning, convenient operation, simple structure through the eccentric elasticity arming mechanism of gyration, reduces worm processing composite error, tooth thickness factor and drive mechanism measuring result's the degree of association, makes the worm pass through lathe work and can satisfy the high accuracy transmission, and manufacturing process simplifies, and is with low costs, equipment requirement is few, and is favorable to batch production.
Description
Technical field
The utility model is related to a kind of mechanical device, particularly a kind of parallel high accuracy worm gearing freed.Should
Mechanism can carry out high-precision angle drive with car worm screw, can also realize putting down worm gear pair by rotation mode by singlehanded
Row frees operation.
Background technology
Worm transmission structure is compact, and gearratio is big, can be with self-locking.Frequently with high accuracy worm-drive on manual angle measuring instrument
Mechanism.The correlation degree of the factors such as the transmission accuracy and worm screw species, composition error, transverse tooth thickness of high accuracy worm gear pair is high, needs to adopt
Precision Machining, the complex process cycle is long, and manufacturing cost is high.Generally it is difficult to meet with the worm screw of turnery processing and requires.
Angle measuring instrument is generally made up of two sets of endless screw transmission agents.In actually measurement, operator is imitated to improve work
Two sets of endless screw transmission agents often will be positioned quickly and exact localization operation by rate simultaneously.The quick positioning of transmission system
Have to be realized in the state of worm screw is freed.At present, worm-drive is accurately positioned one-hand operation and completes, but worm screw passes
Dynamic freeing and quickly position is required for operator with the hands to operate to complete.That is, to realize to two sets of transmission systems
Synchronous interaction coordinates and completes quickly to position and be accurately positioned, worm geared engagement with free that state switching has to can be singlehanded
Complete.
Develop one-hand operation and realize transmission engagement and the worm gearing for freeing state switching, developing will
Inexpensive cutting worm applies the worm gearing in high accuracy is driven.It is a kind of new effective way for solving As-Is
Footpath.
The content of the invention
The purpose of this utility model is to provide a kind of parallel high accuracy worm gearing freed.Using Rotational eccentricity bullet
Property arming mechanism, while realizing that one-handed performance completes worm-drive engagement and switches with state of freeing, reduce processing comprehensive by mistake
The degree of association of difference, transverse tooth thickness factor and transmission mechanism measurement result, makes car worm screw also can be used to be driven in high precision.
The utility model provide technical scheme be：Including body, handwheel, worm and worm wheel, it is characterized in that：Worm screw is installed
In the eccentric orfice of eccentric cylinder, worm screw is positioned by inner shield ring, and outer end is connected with handwheel, and eccentric cylinder is horizontally arranged at the through hole of body
It is interior, positioned by outer back-up ring, worm gear is vertically mounted on this in vivo；Worm gear passes through at the opening of eccentric cylinder and worm engaging；Torsion spring set
The little shaft end of eccentric cylinder is mounted in, two torque arm are connected respectively with eccentric cylinder, body.
Good effect of the present utility model：By Rotational eccentricity elasticity arming mechanism, can one hand carry out worm engaging with solution
The switching of de- state, realizes the quickly and precisely positioning to transmission system, and easy to operate, simple structure is that operator liberates
One hand.By Rotational eccentricity elasticity arming mechanism, worm screw processing composition error, transverse tooth thickness factor and transmission mechanism measurement knot are reduced
The degree of association of fruit, makes worm screw meet high accuracy by passing through turnery processing and is driven, simplified manufacturing process, low cost, device requirement
It is few, and be conducive to batch production.
Description of the drawings
Fig. 1 is inner connecting structure schematic diagram of the present utility model.
Fig. 2 is the sectional view of worm and wormwheel engagement.
Fig. 3 is the sectional view that worm and wormwheel frees state.
Specific embodiment
See Fig. 1-3, inner connecting structure of the present utility model：Worm screw 4 is arranged in the eccentric orfice of eccentric cylinder 3.Inner shield ring 2
It is sleeved on the axle of worm screw 4 and is connected with eccentric cylinder 3 by screw thread.Handwheel 1 is connected with worm screw 4 by screw.Worm screw 4 can be
Rotate in eccentric cylinder 3.Torsion spring 5 is sleeved on the small end of eccentric cylinder 3, is together horizontally arranged in the through hole of body 6 with eccentric cylinder 3,
Two torque arm of torsion spring 5 are inserted respectively in the torsion spring hole on eccentric cylinder 3 and body 6.Outer back-up ring 7 leads in the outside of body 6 with eccentric cylinder 3
Cross threaded connection.Eccentric cylinder 3 can rotate certain limit in body 6, and make torsion spring twist.Worm gear 8 is vertically mounted on this
In body 6, by engaging with worm screw 4 at the opening of eccentric cylinder 3.During worm and wormwheel engagement, torsion spring is in twisting states.Screw
The outer spanner of eccentric cylinder can be such that eccentric cylinder rotates in vivo at this together with worm screw, make torsion spring continue to reverse, and release eccentric barrel spanner
Afterwards, eccentric cylinder spinning reduction under torsion spring effect.
Operation principle
The utility model has transmission and frees two big functions.Eccentric cylinder 3 is arranged in body 6, can be rotated in body 6
Certain angle.Worm screw 4 is arranged in the eccentric orfice of eccentric cylinder 3, and eccentric cylinder 3 can drive worm screw 4 along worm screw radial translation when rotating,
Deviate or return to worm gear engagement reference circle position.Under worm and gear engagement, eccentric cylinder 3 is rotated by the twisting force of torsion spring 5,
All the time push worm screw 4 to worm gear engagement reference circle position, reach the purpose for eliminating worm gear worm backlash.By rotating handwheel
1 can drive worm screw 4 to rotate, and the rotation of worm screw 4 can drive worm gear 8 to rotate, and realize accurate transmission agency.Operator's manual rotation is eccentric
During cylinder 3, worm screw 4 will be driven along worm screw radial translation, deviate worm gear engagement reference circle position, realize freeing for worm and wormwheel.Solution
Under de- state, Level Promoting eccentric cylinder can drive worm screw to carry out quick rotational positioning, and freeing can be with one hand with quick rotational positioning
Operation is completed.Eccentric cylinder is released, eccentric cylinder automatically resets under torsion spring effect, and worm and wormwheel recovers engagement, rotates handwheel
Can be accurately driven.
Claims (1)
1. a kind of parallel high accuracy worm gearing freed, including body, handwheel, worm and worm wheel, is characterized in that：Worm screw
In the eccentric orfice of eccentric cylinder, worm screw is positioned by inner shield ring, and outer end is connected with handwheel, and eccentric cylinder is horizontally arranged at body
In through hole, positioned by outer back-up ring, worm gear is vertically mounted on this in vivo；Worm gear passes through at the opening of eccentric cylinder and worm engaging；Turn round
Spring is sleeved on the little shaft end of eccentric cylinder, and two torque arm are connected respectively with eccentric cylinder, body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620923574.0U CN206092820U (en) | 2016-08-24 | 2016-08-24 | High accuracy worm drive mechanism that parallel is disengaged |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620923574.0U CN206092820U (en) | 2016-08-24 | 2016-08-24 | High accuracy worm drive mechanism that parallel is disengaged |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206092820U true CN206092820U (en) | 2017-04-12 |
Family
ID=58469004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620923574.0U Active CN206092820U (en) | 2016-08-24 | 2016-08-24 | High accuracy worm drive mechanism that parallel is disengaged |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206092820U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630693A (en) * | 2019-09-20 | 2019-12-31 | 中国电子科技集团公司第四十四研究所 | Novel worm and gear transmission structure |
-
2016
- 2016-08-24 CN CN201620923574.0U patent/CN206092820U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630693A (en) * | 2019-09-20 | 2019-12-31 | 中国电子科技集团公司第四十四研究所 | Novel worm and gear transmission structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 110026 North four West Road, Tiexi District, Shenyang City, Liaoning Province, 8 Patentee after: Shenyang No. 3301 Equipment Manufacturing Co., Ltd. Address before: 110141 Liaoning province Shenyang City Yuhong District No. 226 Patentee before: SHENYANG NO.3301 FACTORY |