CN204533186U - A kind of robot angular contact thrust ball bearing - Google Patents
A kind of robot angular contact thrust ball bearing Download PDFInfo
- Publication number
- CN204533186U CN204533186U CN201520202742.2U CN201520202742U CN204533186U CN 204533186 U CN204533186 U CN 204533186U CN 201520202742 U CN201520202742 U CN 201520202742U CN 204533186 U CN204533186 U CN 204533186U
- Authority
- CN
- China
- Prior art keywords
- bearing
- outer ring
- face
- inner ring
- angular contact
- 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.)
- Active
Links
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
The utility model relates to field of bearings, specifically discloses a kind of robot angular contact thrust ball bearing.It comprises outer ring (1), inner ring (2), retainer (3) and steel ball (4), it is characterized in that, the spacing between the channel center of described outer ring (1) and outer ring (1) bearing end end face is greater than the spacing between the channel center of described outer ring (1) and outer ring (1) non-bearing end end face; Spacing between the channel center of described inner ring (2) and inner ring (2) bearing end end face is greater than the spacing between the channel center of described inner ring (2) and inner ring (2) non-bearing end end face; The wrapping angle of described angular contact thrust ball bearing is 45 °.Robot of the present utility model angular contact thrust ball bearing, the thrust load that bearing bears is substantially equal with radial load, and rigidity is better, fully, the life-span is longer for lubrication, and conveniently fills ball during assembling, ensure that steel ball is not scratched by wedge angle, thus ensure the running accuracy of bearing, and have no abnormal sound and clamping stagnation.
Description
Technical field
The utility model relates to field of bearings, is specifically related to a kind of robot angular contact thrust ball bearing.
Background technique
In recent years, along with the development of advanced manufacturing industry, large-scale engineering machinery, automobile,
household electrical appliancesdeng automatic line, industrial machine Man's Demands is increased day by day.Since the sixties in 20th century, since robot enters industrial field, be no matter the quantity of robot, or the technology of robot has had swift and violent development.As the special-purpose assorted bearing of the crucial Component of robot, more external Companies, as IKO, THK, NSK of Japan and U.S. Koydon etc. have just developed the special-purpose assorted bearing of seriation for each position of robot in the eighties in 20th century, for Robot industry provides the basis that can meet robot needs
components and parts, for solid supporting technology basis has been established in developing rapidly of industrial robot.Domestic industry robot self-contained bearing major part relies on import, although minority producer manufactures industrial robot self-contained bearing, but batch is little, description is few, universal component degree is low, lead time is long, cost is high, and quality is unstable, and these factors seriously constrain the normal development of domestic industry Robot industry.For promoting the long term growth of domestic industry robot, the share that the Chinese government uses various way increasing Chinese Machinery Industry to occupy in the market, and the research and development providing preferential measure to encourage more multiple enterprises to put into robot and component come up.
The supporting special bearing of key as industrial robot, has material impact to Key Performance Indicators such as the reliabilities of the smoothness of operation of robot, repetitive positioning accuracy, action validity and work.At present, robot kinds of bearings is more, as thin-walled deep groove ball bearing, thin-wall angular contact ball bearing, thin-walled four-point contact ball, thin-walled crossed roller bearing and harmonic wave bearing in reduction gears etc.Bear that connected load ability is strong, precision is high, friction torque is little because thin-walled crossed roller bearing has, the feature such as lightweight, smooth running, and outstanding running accuracy, operation is installed and is simplified, bear larger axis and radial load, significantly save installing space etc., be therefore mostly applied to the positions such as the waist of industrial robot, ancon, wrist.
As the angular contact thrust ball bearing of industrial robot, technical requirements below demand fulfillment:
(1) radial load that bears of bearing is substantially equal with thrust load;
(2) bearing outer ring axial dimension is limited, but thrust load end will have good rigidity;
(3) bearing will have long lifetime and high reliability;
(4) bearing will have high running accuracy, has no abnormal sound and catching phenomenon during rotation.
As Figure 1-Figure 4, the channel center of its bearing is placed in the middle for the structure of traditional angular contact thrust ball bearing, and the distance of channel center distance both ends of the surface is equal, and the end face of Internal and external cycle is concordant, and its wrapping angle is 60 °.But, when above-mentioned traditional angular contact thrust ball bearing applies to industrial robot, there is following deficiency:
(1) wrapping angle is 60 °, mainly bears thrust load, and robot angular contact thrust ball bearing requires that the radial load born is substantially equal with thrust load;
(2) bearing load end wall is too thin, and rigidity is inadequate;
(3) during robot bearing working, lubricating oil pressure can not be too large, and the raceway groove of traditional angular contact thrust ball bearing and rib cut (see figure 3) mutually, lubricant oil is not just to bottom of trench when direction shown in arrow enters, Bearing inner working surface (steel ball and raceway groove surface of contact) lubricates insufficient, cause bearing life reliability not high, inefficacy probability is larger;
(4) because raceway groove and rib have wedge angle (see figure 3) in the place of cutting mutually, during loading steel ball, easy steel ball is easily scratched by it, affects the running accuracy of bearing, and brings abnormal sound and clamping stagnation.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of angular contact thrust ball bearing being applicable to industrial robot.
In order to solve the problems of the technologies described above, the technological scheme that the utility model provides is as follows: a kind of robot angular contact thrust ball bearing, comprise outer ring, inner ring, retainer and steel ball, the spacing between the channel center of described outer ring and bearing end, outer ring end face is greater than the spacing between the channel center of described outer ring and outer ring non-bearing end end face; Spacing between the channel center of described inner ring and inner ring bearing end end face is greater than the spacing between the channel center of described inner ring and inner ring non-bearing end end face; The wrapping angle of described angular contact thrust ball bearing is 45 °.
Further, under mated condition, the end face of described inner ring bearing end protrudes from the end face of described outer ring non-bearing end.
Further, the spacing between the channel center of described outer ring and bearing end, outer ring end face is 0.7 times of described outer ring thickness.
Further, the spacing between the channel center of described inner ring and inner ring bearing end end face is 0.6 times of described inner ring thickness.
Further, the raceway groove of described outer ring and the rib of non-bearing end side, described outer ring tangent.
The beneficial effect of robot of the present utility model angular contact thrust ball bearing is:
(1) wrapping angle is 45 °, and the thrust load that bearing bears is substantially equal with radial load, more meets the technical requirements of industrial robot;
(2) distance of the channel center distance bearing end end face of bearing outer ring and inner ring is greater than the distance apart from non-bearing end end face, namely the bearing end of bearing inner race and outer ring thickeies, the then rigidity reinforced of bearing outer ring and inner ring bearing end, and although although non-bearing end is thinning, but do not affect the function of bearing, optimize the structure of bearing;
(3) raceway groove of bearing outer ring and the rib of non-bearing end tangent, tangent line directly extends to the end face of non-bearing end from bottom of trench, when pressure is less, just to bottom of trench when making lubricant oil enter, oil stream smooth and easyly can enter bearing working face (i.e. the surface of contact of steel ball and raceway groove), ensure bearing working face sufficient lubrication, thus ensure that the life-span of bearing is longer;
(4) raceway groove of bearing outer ring and the rib of non-bearing end tangent, raceway groove and rib rounding off, conveniently fill ball during assembling, ensures that steel ball is not scratched by wedge angle, thus ensure the running accuracy of bearing, and have no abnormal sound and clamping stagnation.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art angular contact thrust ball bearing;
Fig. 2 is the structural representation of prior art angular contact thrust ball bearing outer ring;
Fig. 3 is the close-up schematic view in the portion of A shown in Fig. 2;
Fig. 4 is the structural representation of prior art angular contact thrust ball bearing inner ring;
Fig. 5 is the structural representation of the present embodiment robot angular contact thrust ball bearing;
Fig. 6 is the structural representation of the present embodiment robot angular contact thrust ball bearing outer ring;
Fig. 7 is the close-up schematic view in the portion of B shown in Fig. 6;
Fig. 8 is the structural representation of the present embodiment robot angular contact thrust ball bearing inner ring.
Embodiment
Below in conjunction with accompanying drawing and concrete mode of execution, the robot angular contact thrust ball bearing to the present embodiment is described in further detail.
As shown in Figure 5, the robot angular contact thrust ball bearing of the present embodiment comprises outer ring 1, inner ring 2, retainer 3 and steel ball 4.In order to meet the usage requirement of robot, the wrapping angle of the robot angular contact thrust ball bearing in the present embodiment is 45 °, and the benefit of this structure is that the thrust load that bearing bears is substantially equal with radial load, meets the technical requirements of industrial robot more.
As shown in Figure 6, spacing between the channel center of the outer ring 1 of the present embodiment and bearing end, outer ring 1 (one end of bearing load) end face is greater than the spacing between channel center and outer ring 1 non-bearing end end face, preferably, the thickness of outer ring 1 is C, then the spacing between channel center and bearing end, outer ring 1 end face is 0.7C.Further, as shown in Figure 8, spacing between the channel center of inner ring 2 and inner ring 2 bearing end end face is greater than the spacing between channel center and inner ring 2 non-bearing end end face, and preferably, the thickness of inner ring 2 is the spacing between B channel center and inner ring 2 bearing end end face is 0.6B.The distance of the channel center distance bearing end end face of bearing outer ring and inner ring is greater than the distance apart from non-bearing end end face, namely the bearing end of bearing inner race and outer ring thickeies, the then rigidity reinforced of bearing outer ring and inner ring bearing end, and although although non-bearing end is thinning, but do not affect the function of bearing, optimize the structure of bearing.
As shown in Figure 7, in the present embodiment, the raceway groove 10 of outer ring 1 is tangent with the rib 20 of non-bearing end side, outer ring 1, and rib 20 tilts and leads directly to the bottom of trench of raceway groove 10.The benefit of design like this is, one, tangent line directly extends to the end face of non-bearing end from bottom of trench, when pressure is less, make lubricant oil along when in Fig. 7, shown in arrow, direction enters just to bottom of trench, oil stream smooth and easyly can enter bearing working face (i.e. the surface of contact of steel ball and raceway groove), ensures bearing working face sufficient lubrication, thus ensures that the life-span of bearing is longer; Its two, raceway groove and rib rounding off, conveniently fill ball during assembling, ensures that steel ball is not scratched by wedge angle, thus ensure the running accuracy of bearing, and have no abnormal sound and clamping stagnation.
In a word; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model, all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a robot angular contact thrust ball bearing, comprise outer ring (1), inner ring (2), retainer (3) and steel ball (4), it is characterized in that, the spacing between the channel center of described outer ring (1) and outer ring (1) bearing end end face is greater than the spacing between the channel center of described outer ring (1) and outer ring (1) non-bearing end end face; Spacing between the channel center of described inner ring (2) and inner ring (2) bearing end end face is greater than the spacing between the channel center of described inner ring (2) and inner ring (2) non-bearing end end face; The wrapping angle of described angular contact thrust ball bearing is 45 °.
2. according to angular contact thrust ball bearing according to claim 1, it is characterized in that, under mated condition, the end face of described inner ring (2) bearing end protrudes from the end face of described outer ring (1) non-bearing end.
3. according to angular contact thrust ball bearing according to claim 1, it is characterized in that, the spacing between the channel center of described outer ring (1) and outer ring (1) bearing end end face is 0.7 times of described outer ring (1) thickness.
4. according to angular contact thrust ball bearing according to claim 1, it is characterized in that, the spacing between the channel center of described inner ring (2) and inner ring (2) bearing end end face is 0.6 times of described inner ring (2) thickness.
5., according to the angular contact thrust ball bearing described in any one of claim 1-4, it is characterized in that, the raceway groove of described outer ring (1) and the rib of described outer ring (1) non-bearing end side tangent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520202742.2U CN204533186U (en) | 2015-04-07 | 2015-04-07 | A kind of robot angular contact thrust ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520202742.2U CN204533186U (en) | 2015-04-07 | 2015-04-07 | A kind of robot angular contact thrust ball bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204533186U true CN204533186U (en) | 2015-08-05 |
Family
ID=53747195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520202742.2U Active CN204533186U (en) | 2015-04-07 | 2015-04-07 | A kind of robot angular contact thrust ball bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204533186U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160327093A1 (en) * | 2015-05-06 | 2016-11-10 | Michael D. Johns | Bearing for use in directional drilling |
| CN110388439A (en) * | 2019-06-24 | 2019-10-29 | 珠海格力电器股份有限公司 | Harmonic reducer and manipulator |
-
2015
- 2015-04-07 CN CN201520202742.2U patent/CN204533186U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160327093A1 (en) * | 2015-05-06 | 2016-11-10 | Michael D. Johns | Bearing for use in directional drilling |
| CN110388439A (en) * | 2019-06-24 | 2019-10-29 | 珠海格力电器股份有限公司 | Harmonic reducer and manipulator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201314333Y (en) | Combination bearing of cylindrical roller and double-direction thrust roller | |
| CN203477060U (en) | Special sealed four-point contact ball bearing | |
| CN204533186U (en) | A kind of robot angular contact thrust ball bearing | |
| CN201382076Y (en) | Plastic bearing | |
| CN204784207U (en) | Accurate alternately cylindrical roller bearing of inner circle terminal surface area breach end cap structural formula | |
| CN109027139A (en) | Robot disappears gap double-cycloid speed reducer | |
| CN202867570U (en) | Inner Streamline structure sealing bearing of large-size ultralong rolling mill | |
| CN202125516U (en) | Coupling bearing | |
| CN202021346U (en) | Main shaft device with hydrostatic bearings | |
| CN202017703U (en) | Connecting sleeve | |
| CN114645903A (en) | High-rotating-speed high-strength injection molding retainer | |
| CN206429531U (en) | A kind of flexible cross roller bearing | |
| CN203348333U (en) | Nylon retainer of high-precision double-row cylinder roller bearing | |
| CN202176613U (en) | Flange bearing | |
| CN203257879U (en) | Inner-ring rib-free unangular-outer-ring double-rib oil groove and oil hole free precise bearing | |
| CN202628833U (en) | Miniature bearing | |
| CN204828310U (en) | A precision bearing for settleing extension | |
| CN203348329U (en) | High-precision double-row cylinder roller bearing | |
| CN206958091U (en) | Harmonic speed reducer flexible bearing | |
| CN202883709U (en) | Cylindrical roller bearing | |
| CN214788567U (en) | External tooth double-raceway mixed rolling body type slewing bearing | |
| CN205559556U (en) | 4 angular contact ball bearing | |
| CN204591992U (en) | A kind of selflubricating biserial conical bearing | |
| CN216199877U (en) | Novel industrial robot is bearing for speed reducer | |
| CN216842716U (en) | Modified PTFE water lubricating shaft sleeve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 318054 North of Fengjiang Street Park Middle Road and West of Houhuang Road, Luqiao District, Taizhou City, Zhejiang Province Patentee after: Zhejiang Bahuan Bearing Co., Ltd. Address before: 318050 No. 889 Xin'an West Street, Luqiao District, Taizhou, Zhejiang. Patentee before: Zhejiang Bahuan Bearing Co., Ltd. |