CN204004199U - A kind of Worm and worm-wheel gearing - Google Patents
A kind of Worm and worm-wheel gearing Download PDFInfo
- Publication number
- CN204004199U CN204004199U CN201420451925.3U CN201420451925U CN204004199U CN 204004199 U CN204004199 U CN 204004199U CN 201420451925 U CN201420451925 U CN 201420451925U CN 204004199 U CN204004199 U CN 204004199U
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- Prior art keywords
- worm
- shaft
- roller bearing
- casing
- tapered roller
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Abstract
The utility model provides a kind of Worm and worm-wheel gearing, belongs to field of mechanical technique.The problems such as it has solved existing Worm and worm-wheel gearing gap and has adjusted complexity, and transmission accuracy is low.This Worm and worm-wheel gearing comprises casing, main shaft and be fixed on the worm gear on main shaft, in casing, be equipped with worm shaft, on worm shaft, have and the intermeshing worm screw of worm gear, one end of worm shaft is connected by needle roller bearing without inner ring with casing, the other end of worm shaft has shaft shoulder portion and shaft head, shaft head is arranged with tapered roller bearing one, tapered roller bearing two and spacer, between tapered roller bearing one and tapered roller bearing two and casing, be connected by bearing housing, the outer wall of bearing housing has been threaded connection adjustment ring, shaft head has the screw section of projecting shaft bearing sleeve, screw section is connected with locking nut.The utlity model has simple in structurely, gap is easy to adjust, transmission accuracy advantages of higher.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of Worm and worm-wheel gearing.
Background technique
Along with the development of machine industry, the transmission accuracy of machine tool component is more and more higher, and transmission power scope is large, requires stable drive friction, and clockwise and anticlockwise is without impact.Therefore, Worm and worm-wheel gearing is widely used in the parts such as milling head, boring head and calibration, swivel gear.Because being unfavorable for oil film, the distribution of worm geared instantaneous contact line forms, the engaging friction between helicoid is larger, in addition the size and dimension of worm gear hob can not obtain with worm screw just the same in technique, thereby make the flank profil of processed worm gear pair be difficult to accurate conjugation, must after running running-in, can be tending towards perfect condition, its main failure forms is wearing and tearing and gummed, because the wearing and tearing of worm and gear can produce back lash, thereby can affect its transmission accuracy.
For the problem of above-mentioned existence, people have made various improvement to Worm and worm-wheel gearing, and some has also applied for patent, for example, in Chinese patent literature data, disclose the retarder [application number: 200620113813.2 in adjustable worm gear, worm screw gap; Notice of authorization number: CN2934752Y], it comprises shell and worm couple, shell is combined by worm gear shell and worm screw shell, worm gear is set in worm gear shell, worm screw is installed in worm screw shell, and worm screw shell and worm gear shell are slidably matched along the line direction of worm screw center and worm gear centre distance, on worm screw shell, be provided with adjusting skewback, above regulating skewback, cover plate is set, cover plate and worm gear shell are spirally connected, and are provided with axial direction positioning device in worm screw termination.
Above-mentioned adjustable worm gear, the retarder in worm screw gap, by regulating the displacement of skewback to come the gap of worm and gear, touch and make worm couple in the running, and no matter worm screw can reduce and keep to stablize worm screw is radial and axial with respect to the gap of worm gear.But the machining accuracy of its skewback can not ensure to fit tightly with the inclined-plane of worm screw shell, still can have some gaps, therefore can cause Worm Wheel System time, worm gear and worm screw produce back lash, cause affecting its transmission accuracy.
Summary of the invention
The purpose of this utility model is for the above-mentioned problems in the prior art, provides one to have the worm gear of adjustment and worm meshing gap and simple in structure, the Worm and worm-wheel gearing that transmission accuracy is high.
The purpose of this utility model can realize by following technical proposal: a kind of Worm and worm-wheel gearing, comprise casing, main shaft and be fixed on the worm gear on main shaft, in described casing, be equipped with worm shaft, on described worm shaft, have and the intermeshing worm screw of worm gear, it is characterized in that, one end of described worm shaft is connected by needle roller bearing without inner ring with casing, the other end of worm shaft has shaft shoulder portion and shaft head, described shaft head is arranged with tapered roller bearing one, tapered roller bearing two and spacer, between described tapered roller bearing one and tapered roller bearing two and casing, be connected by bearing housing, one end face of described tapered roller bearing one is resisted against on the interior step of bearing housing, other end is resisted against the step place of shaft shoulder portion, the outer wall of described bearing housing has been threaded connection adjustment ring, one end face of described adjustment ring is resisted against on casing, one end face of described tapered roller bearing two is resisted against on the interior step of bearing housing, other end is resisted against on spacer, described shaft head has the screw section of projecting shaft bearing sleeve, described screw section is connected with locking nut.
This Worm and worm-wheel gearing, in the time there is gap in Worm Wheel System process, drive bearing housing to move left and right vertically by rotation adjustment ring, the movement of bearing housing is touched and is made tapered roller bearing one drive worm shaft to move vertically, thereby eliminates the back lash between worm and gear.This structure is not only simple in structure but also easy to adjust, and transmission accuracy is high.
In above-mentioned a kind of Worm and worm-wheel gearing, described adjustment ring is connected by some screws with casing.Adjust behind the back lash between worm and gear when adjustment ring, by screw, adjustment ring is locked on casing and makes it more firm.
In above-mentioned a kind of Worm and worm-wheel gearing, the outer wall thread of described bearing housing is connected with round nut, and described round nut is resisted against on the other end of adjustment ring.
In above-mentioned a kind of Worm and worm-wheel gearing, on described bearing housing, offer keyway, on described casing, be connected with and there is the pin inserting in keyway.In the time that adjustment ring drives bearing housing to move left and right, pin can slide in the keyway of bearing housing, can play position-limiting action.
In above-mentioned a kind of Worm and worm-wheel gearing, described worm screw and worm shaft are integral type structure.
Compared with prior art, this Worm and worm-wheel gearing is simple in structure, easy to adjust, and transmission accuracy is high.
Brief description of the drawings
Fig. 1 is the structural representation of this Worm and worm-wheel gearing.
In figure, 1, casing; 2, main shaft; 3, worm gear; 4, worm shaft; 4a, worm screw; 5, needle roller bearing without inner ring; 6, shaft shoulder portion; 7, shaft head; 8, tapered roller bearing one; 9, tapered roller bearing two; 10, spacer; 11, bearing housing; 12, adjustment ring; 13, locking nut; 14, screw; 15, round nut; 16, keyway; 17, pin.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, this Worm and worm-wheel gearing comprises casing 1, main shaft 2 and be fixed on the worm gear 3 on main shaft 2, in casing 1, be equipped with worm shaft 4, on worm shaft, have and the intermeshing worm screw 4a of worm gear 3, one end of worm shaft 4 is connected by needle roller bearing without inner ring 5 with casing 1, the other end of worm shaft 4 has shaft shoulder portion 6 and shaft head 7, shaft head 7 is arranged with tapered roller bearing 1, tapered roller bearing 29 and spacer 10, between tapered roller bearing 1 and tapered roller bearing 29 and casing 1, be connected by bearing housing 11, one end face of tapered roller bearing 1 is resisted against on the interior step of bearing housing 11, other end is resisted against the step place of shaft shoulder portion 6, the outer wall of bearing housing 11 has been threaded connection adjustment ring 12, one end face of adjustment ring 12 is resisted against on casing 1, one end face of tapered roller bearing 29 is resisted against on the interior step of bearing housing 11, other end is resisted against on spacer 10, shaft head 7 has the screw section of projecting shaft bearing sleeve 11, screw section is connected with locking nut 13.
For the transmission of this Worm and worm-wheel gearing more precise and stable, its adjustment ring 12 is connected by some screws 14 with casing 1, the outer wall thread of bearing housing 11 is connected with round nut 15, round nut 15 is resisted against on the other end of adjustment ring 12, on bearing housing 11, offer keyway 16, on casing 1, be connected with and have the pin 17 inserting in keyway 16, worm screw 4a and worm shaft 4 are integral type structure.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendments or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although more used the terms such as casing 1, main shaft 2, worm gear 3, worm shaft 4, worm screw 4a, needle roller bearing without inner ring 5, shaft shoulder portion 6, shaft head 7, tapered roller bearing 1, tapered roller bearing 29, spacer 10, bearing housing 11, adjustment ring 12, locking nut 13, screw 14, round nut 15, keyway 16, pin 17 herein, do not got rid of the possibility that uses other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (5)
1. a Worm and worm-wheel gearing, comprise casing (1), main shaft (2) and be fixed on the worm gear (3) on main shaft (2), in described casing (1), be equipped with worm shaft (4), on described worm shaft, have and the intermeshing worm screw of worm gear (3) (4a), it is characterized in that, one end of described worm shaft (4) is connected by needle roller bearing without inner ring (5) with casing (1), the other end of worm shaft (4) has shaft shoulder portion (6) and shaft head (7), described shaft head (7) is arranged with tapered roller bearing one (8), tapered roller bearing two (9) and spacer (10), between described tapered roller bearing one (8) and tapered roller bearing two (9) and casing (1), be connected by bearing housing (11), one end face of described tapered roller bearing one (8) is resisted against on the interior step of bearing housing (11), other end is resisted against the step place of shaft shoulder portion (6), the outer wall of described bearing housing (11) has been threaded connection adjustment ring (12), one end face of described adjustment ring (12) is resisted against on casing (1), one end face of described tapered roller bearing two (9) is resisted against on the interior step of bearing housing (11), other end is resisted against on spacer (10), described shaft head (7) has the screw section of projecting shaft bearing sleeve (11), described screw section is connected with locking nut (13).
2. a kind of Worm and worm-wheel gearing according to claim 1, is characterized in that, described adjustment ring (12) is connected by some screws (14) with casing (1).
3. a kind of Worm and worm-wheel gearing according to claim 1, is characterized in that, the outer wall thread of described bearing housing (11) is connected with round nut (15), and described round nut (15) is resisted against on the other end of adjustment ring (12).
4. according to a kind of Worm and worm-wheel gearing described in claim 1 or 2 or 3, it is characterized in that, on described bearing housing (11), offer keyway (16), on described casing (1), be connected with the pin (17) having in insertion keyway (16).
5. a kind of Worm and worm-wheel gearing according to claim 1, is characterized in that, described worm screw (4a) is integral type structure with worm shaft (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420451925.3U CN204004199U (en) | 2014-08-12 | 2014-08-12 | A kind of Worm and worm-wheel gearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420451925.3U CN204004199U (en) | 2014-08-12 | 2014-08-12 | A kind of Worm and worm-wheel gearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204004199U true CN204004199U (en) | 2014-12-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420451925.3U Expired - Fee Related CN204004199U (en) | 2014-08-12 | 2014-08-12 | A kind of Worm and worm-wheel gearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204004199U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650259A (en) * | 2016-03-31 | 2016-06-08 | 上海震界自动化设备制造有限公司 | Arm worm adjusting device |
| CN107878663A (en) * | 2016-09-30 | 2018-04-06 | 株式会社岛野 | Bicycle use electro-motor support structure and the Bicycle drive unit for including it |
| CN108019494A (en) * | 2018-01-09 | 2018-05-11 | 台州椒星传动设备有限公司 | A kind of mechanism for axial adjusting of accurate retarding machine input shaft |
| CN109812546A (en) * | 2019-01-09 | 2019-05-28 | 银川威力传动技术股份有限公司 | A kind of backlash adjustment device |
| CN109882548A (en) * | 2019-04-18 | 2019-06-14 | 佛山市迪龙传动机械有限公司 | Gap of worm adjustment mechanism |
| CN110065871A (en) * | 2018-01-24 | 2019-07-30 | 株式会社日立制作所 | The replacing options of pulley gear and pulley main body |
-
2014
- 2014-08-12 CN CN201420451925.3U patent/CN204004199U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650259A (en) * | 2016-03-31 | 2016-06-08 | 上海震界自动化设备制造有限公司 | Arm worm adjusting device |
| CN107878663A (en) * | 2016-09-30 | 2018-04-06 | 株式会社岛野 | Bicycle use electro-motor support structure and the Bicycle drive unit for including it |
| CN108019494A (en) * | 2018-01-09 | 2018-05-11 | 台州椒星传动设备有限公司 | A kind of mechanism for axial adjusting of accurate retarding machine input shaft |
| CN110065871A (en) * | 2018-01-24 | 2019-07-30 | 株式会社日立制作所 | The replacing options of pulley gear and pulley main body |
| CN109812546A (en) * | 2019-01-09 | 2019-05-28 | 银川威力传动技术股份有限公司 | A kind of backlash adjustment device |
| CN109882548A (en) * | 2019-04-18 | 2019-06-14 | 佛山市迪龙传动机械有限公司 | Gap of worm adjustment mechanism |
| CN109882548B (en) * | 2019-04-18 | 2024-01-19 | 佛山市迪龙传动机械有限公司 | Worm gear clearance adjustment mechanism |
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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 |
Granted publication date: 20141210 Termination date: 20160812 |
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| CF01 | Termination of patent right due to non-payment of annual fee |