CN110657158A - Four-point contact type high-speed lead screw bearing - Google Patents
Four-point contact type high-speed lead screw bearing Download PDFInfo
- Publication number
- CN110657158A CN110657158A CN201911003435.0A CN201911003435A CN110657158A CN 110657158 A CN110657158 A CN 110657158A CN 201911003435 A CN201911003435 A CN 201911003435A CN 110657158 A CN110657158 A CN 110657158A
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- CN
- China
- Prior art keywords
- outer ring
- inner ring
- contact point
- ring
- bearing
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
- F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
- F16C19/166—Four-point-contact ball bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
- F16C33/6607—Retaining the grease in or near the bearing
- F16C33/6614—Retaining the grease in or near the bearing in recesses or cavities provided in retainers, races or rolling elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
Abstract
The invention belongs to the technical field of bearings, and relates to a four-point contact type high-speed lead screw bearing which comprises an outer ring and an inner ring which are mutually matched and connected, wherein balls are arranged between the outer ring and the inner ring; an outer ring oil groove is formed in the middle of the inner wall of the outer ring, and an outer ring first contact point and an outer ring second contact point are respectively formed on the inner wall of the outer ring corresponding to two sides of the outer ring oil groove; an inner ring oil groove is formed in the middle of the inner wall of the inner ring, and an inner ring first contact point and an inner ring second contact point are formed on the inner wall of the inner ring corresponding to two sides of the inner ring oil groove respectively; the ball is respectively contacted with the outer ring first contact point, the outer ring second contact point, the inner ring first contact point and the inner ring second contact point. Compared with the existing bearing, the bearing capacity of the lead screw bearing is greatly improved.
Description
Technical Field
The invention belongs to the technical field of bearings, and relates to a four-point contact type high-speed lead screw bearing.
Background
The ball screw bearing is mainly applied to a ball screw, and the ball screw transmission has the advantages of small starting torque, sensitive and stable transmission, long service life and the like, so the ball screw bearing is widely applied to the mechanical manufacturing industries of machine tools, automobiles, robots, aerospace and the like. One end of the ball screw is provided with a pair of ball screw bearings, which are positioning bearings for the screw, which generally bears axial forces. With the wider application of the screw pair in high speed and heavy load, the requirements on the rotating speed and the bearing capacity of the ball screw bearing are higher and higher. The ball screw bearing widely used at present generally comprises an inner ring, an outer ring, a retainer and a plurality of steel balls, wherein a raceway of the inner ring and the outer ring is formed by R with the value of 0.515-0.54 times of the steel balls, and R is called the groove curvature for short. When the bearing works, the lead screw is stressed axially, so that the inner ring of the bearing generates a few axial forces, the axial forces are transmitted to the steel ball through the inner ring and then transmitted to the outer ring, and 2 point contacts are formed between the ball and the raceways of the inner ring and the outer ring. The speed factor of the bearing is proportional to R and the load capacity is inversely proportional to R. Current configurations are unable to meet customer requirements as operating speed and load requirements increase simultaneously.
Disclosure of Invention
The invention aims at the problems and provides a four-point contact type high-speed lead screw bearing, and the bearing capacity of the lead screw bearing is greatly improved compared with that of the existing bearing.
According to the technical scheme of the invention: a four-point contact type high-speed lead screw bearing is characterized in that: the ball bearing comprises an outer ring and an inner ring which are mutually matched and connected, and a ball is arranged between the outer ring and the inner ring; an outer ring oil groove is formed in the middle of the inner wall of the outer ring, and an outer ring first contact point and an outer ring second contact point are respectively formed on the inner wall of the outer ring corresponding to two sides of the outer ring oil groove; an inner ring oil groove is formed in the middle of the inner wall of the inner ring, and an inner ring first contact point and an inner ring second contact point are formed on the inner wall of the inner ring corresponding to two sides of the inner ring oil groove respectively; the ball is respectively contacted with the outer ring first contact point, the outer ring second contact point, the inner ring first contact point and the inner ring second contact point.
As a further improvement of the invention, the outer ring is provided with an outer ring blocking part extending in the radial direction, the inner ring is provided with an inner ring blocking part extending in the radial direction, and the ball is limited along the axial direction of the bearing through the outer ring blocking part and the inner ring blocking part. .
The invention has the technical effects that: the product of the invention has skillful and reasonable structure, can effectively enhance the bearing capacity of the product, and simultaneously, the oil grooves are respectively arranged on the outer ring and the inner ring, so that the lubricating effect of the roller path can be effectively enhanced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
In fig. 1 and 2, the device includes an outer ring first contact point 1, an outer ring second contact point 2, an inner ring first contact point 3, an inner ring second contact point 4, an inner ring oil groove 5, an outer ring oil groove 6, an inner ring ball groove 7, an outer ring ball groove 8, an outer ring 9, an outer ring blocking portion 9-1, an inner ring 10, an inner ring blocking portion 10-1, and the like.
As shown in fig. 1 and 2, the invention is a four-point contact type high-speed screw bearing, which comprises an outer ring 9 and an inner ring 10 which are mutually matched and connected, wherein a ball is arranged between the outer ring 9 and the inner ring 10; an outer ring oil groove 6 is formed in the middle of the inner wall of the outer ring 9, and an outer ring first contact point 1 and an outer ring second contact point 2 are formed on the inner wall of the outer ring 9 corresponding to two sides of the outer ring oil groove 6 respectively; an inner ring oil groove 5 is formed in the middle of the inner wall of the inner ring 10, and an inner ring first contact point 3 and an inner ring second contact point 4 are formed on the inner wall of the inner ring 10 corresponding to two sides of the inner ring oil groove 5 respectively; the ball is respectively contacted with the outer ring first contact point 1, the outer ring second contact point 2, the inner ring first contact point 3 and the inner ring second contact point 4.
The outer ring 9 is provided with an outer ring blocking part 9-1 extending in the radial direction, the inner ring 10 is provided with an inner ring blocking part 10-1 extending in the radial direction, and the ball is limited in the axial direction of the bearing through the outer ring blocking part 9-1 and the inner ring blocking part 10-1.
The product of the invention has reasonable and ingenious structure, the oil grooves are respectively arranged on the non-working surfaces of the inner ring 10 and the outer ring 9 to store the grease in the roller path, thereby effectively improving the lubricating effect of the roller path; meanwhile, the product of the invention is provided with four-point contact for the ball, and the four-point contact structure can effectively improve the bearing capacity of the bearing.
Claims (2)
1. A four-point contact type high-speed lead screw bearing is characterized in that: the ball bearing comprises an outer ring (9) and an inner ring (10) which are mutually matched and connected, and balls are arranged between the outer ring (9) and the inner ring (10); an outer ring oil groove (6) is formed in the middle of the inner wall of the outer ring (9), and an outer ring first contact point (1) and an outer ring second contact point (2) are formed on the inner wall of the outer ring (9) corresponding to two sides of the outer ring oil groove (6) respectively; an inner ring oil groove (5) is formed in the middle of the inner wall of the inner ring (10), and an inner ring first contact point (3) and an inner ring second contact point (4) are formed on the inner wall of the inner ring (10) corresponding to two sides of the inner ring oil groove (5) respectively; the ball is respectively contacted with the outer ring first contact point (1), the outer ring second contact point (2), the inner ring first contact point (3) and the inner ring second contact point (4).
2. The four-point contact high speed screw bearing of claim 1, wherein: the bearing is characterized in that the outer ring (9) is provided with an outer ring blocking part (9-1) extending in the radial direction, the inner ring (10) is provided with an inner ring blocking part (10-1) extending in the radial direction, and the ball is limited in the axial direction of the bearing through the outer ring blocking part (9-1) and the inner ring blocking part (10-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911003435.0A CN110657158A (en) | 2019-10-22 | 2019-10-22 | Four-point contact type high-speed lead screw bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911003435.0A CN110657158A (en) | 2019-10-22 | 2019-10-22 | Four-point contact type high-speed lead screw bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110657158A true CN110657158A (en) | 2020-01-07 |
Family
ID=69041413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911003435.0A Pending CN110657158A (en) | 2019-10-22 | 2019-10-22 | Four-point contact type high-speed lead screw bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110657158A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114645905A (en) * | 2022-03-29 | 2022-06-21 | 人本股份有限公司 | Ball screw bearing assembly for brake system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003247556A (en) * | 2002-02-26 | 2003-09-05 | Nsk Ltd | Multi-point contact ball bearing and pulley for automobiles |
| DE102007010355A1 (en) * | 2007-03-03 | 2008-09-04 | Schaeffler Kg | Rolling-body bearing with multiple support of bodies to support shaft has inner connection line intersecting two contact points of inner ring |
| CN101737423A (en) * | 2008-11-17 | 2010-06-16 | 陈政 | Four-point contact ball bearing |
| CN107269689A (en) * | 2017-07-31 | 2017-10-20 | 浙江天马轴承有限公司 | A kind of combination bearing suitable for the dish-shaped traction machine of elevator |
| CN210799723U (en) * | 2019-10-22 | 2020-06-19 | 无锡市第二轴承有限公司 | Four-point contact type high-speed lead screw bearing |
-
2019
- 2019-10-22 CN CN201911003435.0A patent/CN110657158A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003247556A (en) * | 2002-02-26 | 2003-09-05 | Nsk Ltd | Multi-point contact ball bearing and pulley for automobiles |
| DE102007010355A1 (en) * | 2007-03-03 | 2008-09-04 | Schaeffler Kg | Rolling-body bearing with multiple support of bodies to support shaft has inner connection line intersecting two contact points of inner ring |
| CN101737423A (en) * | 2008-11-17 | 2010-06-16 | 陈政 | Four-point contact ball bearing |
| CN107269689A (en) * | 2017-07-31 | 2017-10-20 | 浙江天马轴承有限公司 | A kind of combination bearing suitable for the dish-shaped traction machine of elevator |
| CN210799723U (en) * | 2019-10-22 | 2020-06-19 | 无锡市第二轴承有限公司 | Four-point contact type high-speed lead screw bearing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114645905A (en) * | 2022-03-29 | 2022-06-21 | 人本股份有限公司 | Ball screw bearing assembly for brake system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20231009 Address after: Building E Workshop, No. 220 Chengnan Road, Xinwu District, Wuxi City, Jiangsu Province, 214000 Applicant after: Wuxi Yulu Precision Industry Co.,Ltd. Address before: No. 1 Lijiang Road, Wangzhuang Street, Xinwu District, Wuxi City, Jiangsu Province, 214028 Applicant before: Wuxi No.2 Bearing Co.,Ltd. |
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| TA01 | Transfer of patent application right |