CN206522412U - Coaxial double-rack-and-pinion drive device - Google Patents
Coaxial double-rack-and-pinion drive device Download PDFInfo
- Publication number
- CN206522412U CN206522412U CN201621426295.XU CN201621426295U CN206522412U CN 206522412 U CN206522412 U CN 206522412U CN 201621426295 U CN201621426295 U CN 201621426295U CN 206522412 U CN206522412 U CN 206522412U
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- Prior art keywords
- helical gear
- rack
- helical
- gear
- drive device
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Abstract
The utility model provides a kind of coaxial double-rack-and-pinion drive device, and it includes：Gear mounting shaft, the first helical gear on the gear mounting shaft and the second helical gear, at least one spring between first helical gear and the second helical gear, the helical rack engaged with first helical gear and the second helical gear and the gland on the outside of second helical gear, the spring connect first helical gear and the second helical gear.Because the swelling of spring has certain elastic space, when the first helical gear and the second helical gear in use for some time, it there occurs certain abrasion, still can be by adjusting adjustment fixture, pass through the transmission of gland, change the distance between the first helical gear and the second helical gear, butterfly spring is reached same tension force, it is ensured that the first helical gear and the second helical gear still can reach same transmission accuracy after occurring certain abrasion.
Description
Technical field
The utility model belongs to the technical field of rack pinion, more particularly to a kind of coaxial double-rack-and-pinion driving dress
Put.
Background technology
Traditional rack pinion drive device, because the gap between wheel and rack is difficult to eliminate, causes axle
Driving always has gap presence in switching direction, have impact on the positioning precision of transmission.How to be eliminated instead in rack pinion
To in the method in gap：Have and Double-gear, a responsible positive direction driving, a responsible negative side are driven using bi-motor and reductor
To driving, such method is accomplished by more a set of drive device, so as to increase cost, perhaps bigger installation and mobile space；
Also using the distance between control pitch curve circle and rack wiring during assembling, it so can only also reduce gap and can not eliminate
Backlass, while can also accelerate the Fast Wearing of gear；Other useful single gear drivings, then add spring to be used to adapt to gear
The method of pitch circle and rack wiring distance, backlass can not be eliminated well, can't adapt to large inertia driving.
Utility model content
The purpose of this utility model is to provide a kind of reverse precision for improving transmission, eliminates the coaxial bidentate of backlass
Take turns rack drive device.
The utility model provides a kind of coaxial double-rack-and-pinion drive device, and it includes：Gear mounting shaft, installed in the tooth
Take turns the first helical gear and the second helical gear in installation axle, at least one between first helical gear and the second helical gear
Spring, the helical rack engaged with first helical gear and the second helical gear and the gland on the outside of second helical gear,
The spring connects first helical gear and the second helical gear.
Preferably, in addition to by the gland it is fixed on the fixture on the gear mounting shaft.
Preferably, the fixture is screw.
Preferably, first helical gear and the second helical gear are located on the surface of the helical rack.
Preferably, the gear mounting shaft is fixed on a matrix, and the helical rack is fixed on another matrix.
Preferably, the spring is provided with two be oppositely arranged.
Preferably, described two springs are set close to the helical rack.
Preferably, the spring is butterfly spring.
Because the swelling of spring has certain elastic space, when the first helical gear and the second helical gear are using a period of time
Afterwards, certain abrasion is there occurs, still, by the transmission of gland, the first helical gear can be changed by adjusting adjustment fixture
The distance between with the second helical gear, butterfly spring is set to reach same tension force, it is ensured that the first helical gear and second oblique
Gear still can reach same transmission accuracy after occurring certain abrasion.
Brief description of the drawings
Fig. 1 is the structural representation of the coaxial double-rack-and-pinion drive device of the utility model.
Embodiment
The utility model is further described with reference to the accompanying drawings and examples.
As shown in figure 1, this coaxial double-rack-and-pinion drive device eliminates rack pinion gap, it includes：Gear
Installation axle 10, the first helical gear 20 on the gear mounting shaft 10 and the second helical gear 30, positioned at first helical gear
20 and second two butterfly spring 40 between helical gear 30, engaged with the helical gear 30 of the first helical gear 20 and second it is oblique
Rack 50, the gland 60 positioned at the outside of second helical gear 30 and the gland 60 is fixed on consolidating on gear mounting shaft 10
Determine part 70.
Wherein, the first helical gear 20 and the second helical gear 30 are located on the surface of helical rack 50.
Two butterfly springs 40 are oppositely arranged and are close to helical rack 50 and set, and butterfly spring 40 connects the first helical gear 20
With the second helical gear 30, pass through the elastic tension force of spring 40 so that the first helical gear 20 and the second helical gear 30 are toward shown in Fig. 1
Top, lower direction be in swelling state, the first helical gear 20 will be adjacent to the left side of helical rack 50, and the second helical gear 30 will
Be adjacent to the right side of oblique helical rack 50, so as to ensure rack pinion when both forward and reverse directions drive it is all very close to each other,
Improve reverse drive precision.
Fixture 70 is screw, and fixture 70 is worn gland 60 and is fixed on gear mounting shaft 10, prevents the second helical gear 30
Come off, fixture 70 can adjust the left and right two sides of the first helical gear 20 and the second helical gear 30 just with helical rack 50 connect
Touch.
Gear mounting shaft 10 is fixed on a matrix, and helical rack 50 is fixed on another matrix, realizes the first helical teeth
The helical gear 30 of wheel 20 and second is engaged with helical rack 50, realizes rotating and reverse for gear.
Because the swelling of spring 40 has certain elastic space, when the first helical gear 20 and the second helical gear 30 are using one
After the section time, certain abrasion is there occurs, by the transmission of gland 60, can still be changed by adjusting adjustment fixture 70
The distance between first helical gear 20 and the second helical gear 30, make butterfly spring 40 reach same tension force, it is ensured that the
One helical gear 20 and the second helical gear 30 occur still to can reach same transmission accuracy after certain abrasion.
In other embodiments, change disc spring specification or quantity, or gear size, whole device become vertically,
Other directions such as level, can also realize function of the present utility model, it is clear that these are also all in protection domain of the present utility model
Within.
Preferred embodiment of the present utility model described in detail above, but the utility model is not limited to above-mentioned implementation
Detail in mode, in range of the technology design of the present utility model, can be carried out to the technical solution of the utility model
A variety of equivalents, these equivalents belong to protection domain of the present utility model.
Claims (8)
1. a kind of coaxial double-rack-and-pinion drive device, it is characterised in that it includes：Gear mounting shaft, installed in the gear peace
Fill the first helical gear and the second helical gear, at least one bullet between first helical gear and the second helical gear on axle
Spring, the helical rack engaged with first helical gear and the second helical gear and the gland on the outside of second helical gear, institute
State spring and connect first helical gear and the second helical gear.
2. coaxial double-rack-and-pinion drive device according to claim 1, it is characterised in that：Also include consolidating on the gland
It is scheduled on the fixture on the gear mounting shaft.
3. axle double-rack-and-pinion drive device according to claim 2, it is characterised in that：The fixture is screw.
4. coaxial double-rack-and-pinion drive device according to claim 1, it is characterised in that：First helical gear and
Two helical gears are located on the surface of the helical rack.
5. coaxial double-rack-and-pinion drive device according to claim 1, it is characterised in that：The gear mounting shaft is fixed
On a matrix, the helical rack is fixed on another matrix.
6. coaxial double-rack-and-pinion drive device according to claim 1, it is characterised in that：The spring is provided with relative set
Two put.
7. coaxial double-rack-and-pinion drive device according to claim 6, it is characterised in that：Described two springs are close to institute
State helical rack setting.
8. coaxial double-rack-and-pinion drive device according to claim 1, it is characterised in that：The spring is butterfly bullet
Spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621426295.XU CN206522412U (en) | 2016-12-23 | 2016-12-23 | Coaxial double-rack-and-pinion drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621426295.XU CN206522412U (en) | 2016-12-23 | 2016-12-23 | Coaxial double-rack-and-pinion drive device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206522412U true CN206522412U (en) | 2017-09-26 |
Family
ID=59888871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621426295.XU Active CN206522412U (en) | 2016-12-23 | 2016-12-23 | Coaxial double-rack-and-pinion drive device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206522412U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223732A (en) * | 2018-03-12 | 2018-06-29 | 福州大学 | Eliminate the mechanism of backlass in rack pinion |
| CN111644641A (en) * | 2020-06-15 | 2020-09-11 | 青岛杰出精密机械有限公司 | Novel double-power-feed numerical control heavy horizontal lathe |
| WO2020215733A1 (en) * | 2019-04-24 | 2020-10-29 | 广东金力变速科技股份有限公司 | Zero-clearance gear transmission mechanism and speed-reducing electric motor |
-
2016
- 2016-12-23 CN CN201621426295.XU patent/CN206522412U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223732A (en) * | 2018-03-12 | 2018-06-29 | 福州大学 | Eliminate the mechanism of backlass in rack pinion |
| WO2020215733A1 (en) * | 2019-04-24 | 2020-10-29 | 广东金力变速科技股份有限公司 | Zero-clearance gear transmission mechanism and speed-reducing electric motor |
| CN111644641A (en) * | 2020-06-15 | 2020-09-11 | 青岛杰出精密机械有限公司 | Novel double-power-feed numerical control heavy horizontal lathe |
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