CN215334210U - Worm and worm gear pair transmission clearance adjusting device - Google Patents
Worm and worm gear pair transmission clearance adjusting device Download PDFInfo
- Publication number
- CN215334210U CN215334210U CN202120257916.0U CN202120257916U CN215334210U CN 215334210 U CN215334210 U CN 215334210U CN 202120257916 U CN202120257916 U CN 202120257916U CN 215334210 U CN215334210 U CN 215334210U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 22
- 125000006850 spacer group Chemical group 0.000 claims description 23
- 125000003003 spiro group Chemical group 0.000 abstract description 4
- 238000005192 partition Methods 0.000 description 7
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Abstract
The utility model provides a worm and worm gear pair transmission gap adjusting device, which comprises a box body, two bearings, a bearing sleeve, an adjusting nut and a locking nut, wherein the inner circumferential surface of the bearing sleeve is connected with the outer circumferential surfaces of the two bearings; and locking nut spiro union in screw thread section, after the position adjustment of worm axle, make locking nut butt adjusting nut deviate from the terminal surface that bears the weight of the shaft hole, just can restrict the bearing housing and continue to rotate to with the fixed position of worm axle, possess fine practicality.
Description
Technical Field
The utility model relates to the technical field of mechanical transmission, in particular to a transmission clearance adjusting device of a worm and worm gear pair.
Background
With the continuous development and progress of science and technology, a precise transmission chain driven by a servo motor is widely applied. At present, in many precise transmission occasions, a servo motor is widely adopted to directly drive a worm and worm gear pair so as to obtain a larger speed reduction ratio and reduce transmission errors. However, the clearance that occurs when the worm engages the worm gear is always present. The reason is that the center distance error between the worm and the worm wheel is caused; second, backlash and wear when the worm engages the worm gear. By improving the center distance precision between the worm shaft and the worm wheel on the box body and the manufacturing precision of the worm and worm wheel parts, the effects of reducing the clearance and improving the transmission precision can be achieved, but the manufacturing cost of the parts is undoubtedly increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a worm and gear pair transmission gap adjusting device capable of adjusting the gap between a worm and a worm gear and improving the transmission precision.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a worm and worm gear pair transmission gap adjusting device, comprising:
the worm rack comprises a box body, a worm rack body and a worm rack, wherein an adjusting shaft hole and a bearing shaft hole are formed in the box body, and the adjusting shaft hole and the bearing shaft hole are used for installing a worm shaft;
the two bearings are arranged in the adjusting shaft hole along the axial direction of the adjusting shaft hole and are used for sleeving the worm shaft;
the inner circumferential surface of the bearing sleeve is connected with the outer circumferential surfaces of the two bearings, the outer circumferential surface of the bearing sleeve comprises a smooth section and a threaded section, the smooth section is connected with the inner circumferential surface of the adjusting shaft hole, and the threaded section is positioned outside the adjusting shaft hole away from the bearing shaft hole;
the adjusting nut is fixed on the box body and is in threaded connection with the threaded section;
locking nut, locking nut spiro union in the screw thread section, locking nut maneuverability butt adjusting nut deviates from the terminal surface that bears the weight of the shaft hole.
Optionally, the bearing housing includes an outer sleeve and an inner spacer ring, the inner spacer ring is coaxially disposed inside the outer sleeve, and the two bearings respectively abut against two sides of the inner spacer ring.
Optionally, the worm-and-worm gear pair transmission gap adjusting device further comprises two spacers and a limiting nut, a first shaft section and a second shaft section are formed at one end of the worm shaft, the diameter of the second shaft section is larger than that of the first shaft section, the second shaft section is sleeved with the two bearings and the two spacers, the two bearings are located between the two spacers, the limiting nut is screwed on the first shaft section, and the limiting nut is abutted to one spacer in an operable mode.
Optionally, the worm-and-worm gear pair transmission gap adjusting device further includes deep groove ball bearings, a third shaft section is further formed at one end of the worm shaft, the third shaft section is coaxially connected to one side of the second shaft section, which is far away from the first shaft section, the diameter of the third shaft section is larger than that of the second shaft section, the number of the deep groove ball bearings is three, the two deep groove ball bearings are sleeved on the third shaft section and fixed in the adjusting shaft hole, and the other deep groove ball bearing is sleeved on the other end of the worm shaft and fixed in the bearing shaft hole.
Optionally, both bearings are thrust bearings.
The utility model provides a worm and worm gear pair transmission gap adjusting device, wherein the inner circumferential surface of a bearing sleeve is connected with the outer circumferential surfaces of two bearings, the two bearings are sleeved with a worm shaft, so that the bearing sleeve can move together with the worm shaft, the smooth section of the bearing sleeve is connected with the inner circumferential surface of an adjusting shaft hole, a threaded section is positioned outside the adjusting shaft hole deviating from a bearing shaft hole, an adjusting nut is screwed in the threaded section, and the relative position of the bearing sleeve and the adjusting nut can be adjusted by rotating the bearing sleeve, so that the position of the worm shaft is adjusted; and locking nut spiro union in screw thread section, after the position adjustment of worm axle, make locking nut butt adjusting nut deviate from the terminal surface that bears the weight of the shaft hole, just can restrict the bearing housing and continue to rotate to with the fixed position of worm axle, possess fine practicality.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a sectional view of a worm-and-gear pair transmission gap adjusting device of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.
Example one
Referring to fig. 1, the device for adjusting the transmission clearance of the worm-and-gear pair according to the embodiment of the present invention includes a case 1, two bearings 2, a bearing housing 3, an adjusting nut 4, a lock nut 5, two spacers 6, and a limit nut 7.
Wherein, the box 1 of this embodiment is internally provided with a partition plate 8, the partition plate 8 is provided with an adjusting shaft hole 9, and one side wall parallel to the partition plate 8 is provided with a bearing shaft hole 10, so that the adjusting shaft hole 9 and the bearing shaft hole 10 are arranged coaxially and equally, and the adjusting shaft hole 9 and the bearing shaft hole 10 are respectively used for installing two ends of the worm shaft, so that the worm shaft can rotate in the adjusting shaft hole 9 and the bearing shaft hole 10. It should be noted that the worm adopts a double lead worm, and the tooth thickness of the double lead worm is changed, so that the clearance of the worm gear can be adjusted to reach the optimal state through the clearance adjusting device.
Further, in the two bearings 2 of the present embodiment, the two bearings 2 are disposed in the adjusting shaft hole 9 along the axial direction of the adjusting shaft hole 9, and the inner circumferential surfaces of the two bearings 2 are both sleeved on the same end of the worm shaft. The inner circumferential surface of the bearing sleeve 3 is connected with the outer circumferential surfaces of the two bearings 2. It should be noted that the bearing housing 3 of the present embodiment includes an outer sleeve and an inner partition ring, the inner partition ring is coaxially disposed inside the outer sleeve, and the two bearings 2 respectively abut against two sides of the inner partition ring. The two spacers 6 are respectively abutted against the outer sides of the end faces of the two bearings 2 which are deviated from each other, namely the two bearings 2 are positioned between the two spacers 6.
Furthermore, the outer circumference of the outer sleeve comprises a smooth section and a threaded section, the smooth section is connected with the inner circumference of the adjusting shaft hole 9, and the threaded section is located outside the adjusting shaft hole 9 away from the bearing shaft hole 10. Then, when the bearing sleeve 3 moves, the inner spacer ring pushes the bearing 2 to move, so that the bearing 2 drives the worm shaft to move, and the fit clearance between the worm shaft and the turbine is adjusted. It should be noted that the adjusting nut 4 of the present embodiment is screwed to the threaded section, and the fastening screw 5 passes through the adjusting nut 4 and then connects to the partition 8 of the housing 1, so as to fixedly connect the adjusting nut 4 to the housing 1, so that when the fit clearance between the worm shaft and the turbine needs to be adjusted, the bearing housing 3 can be rotated, the bearing housing 3 axially moves under the action of the thread, and because the bearing housing 3 is connected with the worm shaft through the bearing 2 in a fit manner, the worm shaft does not rotate but is pushed by the inner spacer ring to axially move in the rotation process of the bearing housing 3, so as to change the fit clearance between the worm shaft and the turbine. It is to be noted that both bearings 2 of the present embodiment are thrust bearings 2. And the locking nut 5 of this embodiment is screwed on the thread section, and the locking nut 5 can abut against the end surface of the adjusting nut 4 departing from the bearing shaft hole 10. That is, when the gap is adjusted, the locking nut 5 abuts against the end surface of the adjusting nut 4 facing away from the bearing shaft hole 10, so that the bearing housing 3 is restricted from further rotation, and the position of the worm shaft is fixed.
Further, the one end of worm axle is formed with first axle section, second axle section and third axle section, and first axle section, second axle section and third axle section coaxial coupling in proper order set up, and third axle section coaxial coupling deviates from one side of first axle section in the second axle section promptly. The diameter of second shaft section is greater than first shaft section, and the diameter of third shaft section is greater than the second shaft section, and two bearings 2 and two spacer bushes 6 all cup joint the second shaft section, and one of them spacer bush 6 surpasss the shaft shoulder of second shaft section, and another spacer bush 6 then the shaft shoulder of butt third shaft section, and stop nut 7 spiro union is in first shaft section, and stop nut 7 maneuverability and a 6 butts of spacer bush to guarantee that bearing 2 can not slide on the second shaft section.
Furthermore, the worm and worm gear pair transmission clearance adjusting device further comprises three deep groove ball bearings 11, two deep groove ball bearing sleeves 3 are arranged on the third shaft section and fixed in the adjusting shaft hole 9, and the other deep groove ball bearing sleeve 3 is arranged at the other end of the worm shaft and fixed in the bearing shaft hole 10.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. It should be noted that at least two modifications and refinements may be made by those skilled in the art without departing from the principle of the present application, and these modifications and refinements should also be regarded as the protection scope of the present application.
Claims (5)
1. A worm and worm gear pair transmission clearance adjusting device is characterized by comprising:
the worm rack comprises a box body, a worm rack body and a worm rack, wherein an adjusting shaft hole and a bearing shaft hole are formed in the box body, and the adjusting shaft hole and the bearing shaft hole are used for installing a worm shaft;
the two bearings are arranged in the adjusting shaft hole along the axial direction of the adjusting shaft hole, and both the two bearings are used for being sleeved with the worm shaft;
the inner circumferential surface of the bearing sleeve is connected with the outer circumferential surfaces of the two bearings, the outer circumferential surface of the bearing sleeve comprises a smooth section and a threaded section, the smooth section is connected with the inner circumferential surface of the adjusting shaft hole, and the threaded section is positioned outside the adjusting shaft hole deviating from the bearing shaft hole;
the adjusting nut is fixed on the box body and is in threaded connection with the threaded section;
the locking nut is in threaded connection with the threaded section, and the locking nut can abut against the end face, deviating from the bearing shaft hole, of the adjusting nut operatively.
2. The worm-and-gear pair transmission clearance adjustment device according to claim 1, wherein the bearing sleeve comprises an outer sleeve and an inner spacer ring, the inner spacer ring is coaxially arranged inside the outer sleeve, and the two bearings are respectively abutted against two sides of the inner spacer ring.
3. The worm-and-gear pair transmission gap adjusting device of claim 1, further comprising two spacers and a stop nut, wherein a first shaft section and a second shaft section are formed at one end of the worm shaft, the diameter of the second shaft section is larger than that of the first shaft section, the two bearings and the two spacers are both sleeved on the second shaft section, the two bearings are located between the two spacers, the stop nut is screwed on the first shaft section, and the stop nut is operatively abutted against one of the spacers.
4. The worm-and-gear pair transmission gap adjusting device of claim 3, further comprising three deep groove ball bearings, wherein a third shaft section is formed at one end of the worm shaft, the third shaft section is coaxially connected to one side of the second shaft section, which is far away from the first shaft section, the diameter of the third shaft section is larger than that of the second shaft section, two deep groove ball bearings are arranged on the third shaft section and fixed in the adjusting shaft hole, and the other deep groove ball bearing is arranged at the other end of the worm shaft and fixed in the bearing shaft hole.
5. The device for adjusting the transmission clearance of a worm-and-gear pair according to any one of claims 1 to 4, wherein both of the bearings are thrust bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120257916.0U CN215334210U (en) | 2021-01-29 | 2021-01-29 | Worm and worm gear pair transmission clearance adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120257916.0U CN215334210U (en) | 2021-01-29 | 2021-01-29 | Worm and worm gear pair transmission clearance adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215334210U true CN215334210U (en) | 2021-12-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120257916.0U Expired - Fee Related CN215334210U (en) | 2021-01-29 | 2021-01-29 | Worm and worm gear pair transmission clearance adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215334210U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126838A (en) * | 2022-08-09 | 2022-09-30 | 重庆大学 | Double-freedom-degree mechanical arm with adjustable backlash based on conical worm transmission |
-
2021
- 2021-01-29 CN CN202120257916.0U patent/CN215334210U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126838A (en) * | 2022-08-09 | 2022-09-30 | 重庆大学 | Double-freedom-degree mechanical arm with adjustable backlash based on conical worm transmission |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211228 |
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| CF01 | Termination of patent right due to non-payment of annual fee |