CN201934607U - Rack and gear transmission mechanism - Google Patents
Rack and gear transmission mechanism Download PDFInfo
- Publication number
- CN201934607U CN201934607U CN 201120041535 CN201120041535U CN201934607U CN 201934607 U CN201934607 U CN 201934607U CN 201120041535 CN201120041535 CN 201120041535 CN 201120041535 U CN201120041535 U CN 201120041535U CN 201934607 U CN201934607 U CN 201934607U
- Authority
- CN
- China
- Prior art keywords
- rack
- tooth bar
- guide rail
- base
- bar guide
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model relates to the field of mechanical transmission, in particular to a rack and pinion transmission mechanism which comprises a base 1, a gear 2 and a rack 3. The gear 2 and the rack 3 are meshed with each other. The base 1 includes a rack guide rail 4, two sections of grooves 5 arranged at the two ends of the rack guide rail 4, two rolling devices 6 embedded in the grooves 5 and limiting mechanisms 7 positioned on the sides at the two ends of the rack guide rail 4. The rack and pinion transmission mechanism is provided with two rolling devices arranged at the two ends of the rack guide rail of the base, thereby leading a frictionally sliding motion of a rack inside the rack guide rail to be transformed into a rolling motion of the rack on bearings. Accordingly the rack is not only positioned accurately, but also moves flexibly, and the manufacturing cost is lower.
Description
Technical field
The utility model relates to mechanical transmission fields, particularly relates to a kind of rack and pinion drive mechanism.
Background technique
Pinion and rack is a kind of common driving mechanism, the present rack and pinion drive mechanism that uses, tooth bar all slides in sealing or semi-enclosed track mostly, when this makes the tooth bar motion and track friction power bigger.For the higher pinion and rack of required precision, its track, tooth bar precision and surface finishment require very high, and manufacture cost is bigger.
Summary of the invention
The purpose of this utility model: a kind of rack and pinion drive mechanism is provided, can satisfies high-precision requirement, manufacture cost is lower.
The technical solution of the utility model: a kind of rack and pinion drive mechanism, comprise base 1, pitch wheel 2 and tooth bar 3, described base 1 comprises tooth bar guide rail 4, be positioned at two sections grooves 5 at tooth bar guide rail 4 two ends, be embedded in groove 5 two tourelles 6, be positioned at the position-limit mechanism 7 of side, tooth bar guide rail 4 two ends;
Described tooth bar 3 processes for the cylindrical body that two ends is had boss 8 respectively mills a plane that is parallel to each other up and down, processes straight-tooth therein on the plane, and another plane places on the base rail;
Described gear 2 is installed on the base 1 by the bearing on gear carrier on the coupling 9 10 and the base 11, with tooth bar 3 engagements.
Preferably, described position-limit mechanism is the confined planes that is positioned at side, tooth bar guide rail 4 two ends.
Advantage of the present utility model: by two tourelles are installed at base tooth bar guide rail two ends, make the sliding friction of tooth bar in guide rail be converted into the rolling of tooth bar on bearing, so not only the tooth bar location is accurate, and motion flexibly, and manufacture cost is lower.
Description of drawings:
Fig. 1 is the structural representation of this driving mechanism one better embodiment;
Fig. 2 is the understructure schematic representation of this driving mechanism one better embodiment.
Wherein, 1 base, 2 gears, 3 tooth bars, 4 tooth bar guide rails, 5 grooves, 6 tourelles, 7 position-limit mechanisms, 8 boss, 9 coupling, 10 gear carriers, 11 bearings.
Embodiment:
Below in conjunction with accompanying drawing this mechanism is done to describe in further detail, see also Fig. 1 and Fig. 2.
A kind of rack and pinion drive mechanism, comprise base 1, pitch wheel 2 and tooth bar 3, described base 1 comprises tooth bar guide rail 4, two sections grooves 5 that are positioned at tooth bar guide rail 4 two ends, two tourelles 6 that are embedded in groove 5 that are used to place tooth bar 3, the position-limit mechanism 7 that is positioned at side, tooth bar guide rail 4 two ends; After tooth bar 3 is positioned over the tooth bar guide rail 4 of base 1, can move flexibly on definite plane;
Described tooth bar 3 processes for the cylindrical body that two ends is had boss 8 respectively mills a plane that is parallel to each other up and down, processes straight-tooth therein on the plane, and another plane places on the base rail; Boss 8 is used to limit tooth bar 3.
Described gear 2 is installed on the base 1 by the bearing on gear carrier on the coupling 9 10 and the base 11, with tooth bar 3 engagements.
Preferably, described position-limit mechanism is the confined planes that is positioned at side, tooth bar guide rail 4 two ends, make that tooth bar 3 is placed into tooth bar guide rail 4 after, side direction can not slided, and only does straight line motion along one degree of freedom on the guide rail.
This mechanism be because of test need to design a kind of can be in the accurately reciprocating flexibly mechanism of rectilinear direction, and can the straight limit movement travel, and the lower driving mechanism of manufacture cost.
Claims (2)
1. a rack and pinion drive mechanism comprises base [1], pitch wheel [2] and tooth bar [3], it is characterized in that:
Described base [1] comprises tooth bar guide rail [4], be positioned at two sections grooves [5] at tooth bar guide rail [4] two ends, be embedded in groove [5] two tourelles [6], be positioned at the position-limit mechanism [7] of tooth bar guide rail [4] side, two ends;
Described tooth bar [3] processes for the cylindrical body that two ends is had boss [8] respectively mills a plane that is parallel to each other up and down, processes straight-tooth therein on the plane, and another plane places on the base rail;
Described gear [2] is installed on the base [1] by gear carrier [10] on the coupling [9] and the bearing [11] on the base, meshes with tooth bar [3].
2. rack and pinion drive mechanism according to claim 1 is characterized in that, described position-limit mechanism [7] is for being positioned at the confined planes of tooth bar guide rail [4] side, two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120041535 CN201934607U (en) | 2011-02-17 | 2011-02-17 | Rack and gear transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120041535 CN201934607U (en) | 2011-02-17 | 2011-02-17 | Rack and gear transmission mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201934607U true CN201934607U (en) | 2011-08-17 |
Family
ID=44446126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120041535 Expired - Lifetime CN201934607U (en) | 2011-02-17 | 2011-02-17 | Rack and gear transmission mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201934607U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807581A (en) * | 2014-02-28 | 2014-05-21 | 中电科技德清华莹电子有限公司 | Transmission device of pneumatic rotating platform |
| CN109698463A (en) * | 2019-03-06 | 2019-04-30 | 潍坊科技学院 | A kind of the Electron-Optics Analysis system is provided with Wavelength tunable laser |
-
2011
- 2011-02-17 CN CN 201120041535 patent/CN201934607U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807581A (en) * | 2014-02-28 | 2014-05-21 | 中电科技德清华莹电子有限公司 | Transmission device of pneumatic rotating platform |
| CN109698463A (en) * | 2019-03-06 | 2019-04-30 | 潍坊科技学院 | A kind of the Electron-Optics Analysis system is provided with Wavelength tunable laser |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205226253U (en) | Simple and easy nimble stroke mechanism that becomes | |
| CN206544788U (en) | Two-pass conveying mechanism | |
| CN203921932U (en) | Automatic carriage track switch shifter | |
| CN202888268U (en) | Locking device | |
| CN201934607U (en) | Rack and gear transmission mechanism | |
| CN203009774U (en) | Dual-motor anti-backlash transmission mechanism | |
| CN203238997U (en) | Two-stage elevating stage | |
| CN202063035U (en) | Electric slide rail for vehicle seat | |
| CN201929967U (en) | Horizontal C-arm movement driving mechanism for moving x-ray machine | |
| CN104944321A (en) | Long-stroke retractable fork | |
| CN101294620A (en) | Reciprocating linear motion mechanism | |
| CN203622961U (en) | Movement mechanism for 3D printing equipment | |
| CN101294619A (en) | Reciprocating linear motion mechanism | |
| CN203752749U (en) | Teaching tool for drawing involute | |
| CN202780826U (en) | Grinding carriage feed system of grinding machine | |
| CN208750318U (en) | A kind of automation driven motor slide unit with fixed function | |
| CN202392051U (en) | Double-motor double-output integrated anti-backlash gearbox | |
| CN202825821U (en) | Mechanical arm load transferring sliding mechanism and mechanical arm | |
| CN201424431Y (en) | Dual drive synchronous servo gantry type cutting device | |
| CN202655515U (en) | Novel mobile positioning mechanism of numerical control steel bar bender | |
| CN202896696U (en) | Expansion-shrinkage mechanical structure of double-expansion car | |
| CN202169306U (en) | Numerical control turret punch press | |
| CN211569365U (en) | Conveying machine | |
| CN201645311U (en) | Horizontal honing machine | |
| CN202412577U (en) | Shifting mechanism conducting linear motion |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110817 |