CN102896331B - Spacer bush for double positioning of bearing - Google Patents
Spacer bush for double positioning of bearing Download PDFInfo
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- CN102896331B CN102896331B CN201210406218.8A CN201210406218A CN102896331B CN 102896331 B CN102896331 B CN 102896331B CN 201210406218 A CN201210406218 A CN 201210406218A CN 102896331 B CN102896331 B CN 102896331B
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Abstract
The invention discloses a spacer bush for double positioning of a bearing. A cylindrical mating surface for radial positioning is a cylindrical surface inside a part of the spacer bush; the inner diameter of the rest part of the cylindrical surface inside the spacer bush is larger than the inner diameter of the part of the spacer bush; and the axial length of the part of the spacer bush is 1/20-1/8 of the axial length of the whole spacer bush and is not more than 2.5mm and not less than 1mm. The spacer bush for the double positioning of the bearing provided by the invention can effectively overcome the interference in the double positioning.
Description
Technical field
The present invention relates to a kind of bearing two location spacer.
Background technology
In Automatic manual transmission, the unbalanced moments produced in order to the gap prevented owing to existing between bearing spacer during main shaft High Rotation Speed and the main shaft diameter of axle affects the stationarity and rotating accuracy that main shaft rotates, and high-speed high-precision bearing spacer often adopts radial and axial pair of locate mode to dynamic equilibrium problems after the assembly precision after ensureing bearing and installing and assembling.This pair of locate mode is that one crosses locate mode on Location Theory, and this location of crossing exists the problem that when locating, radial location and axial location are interfered mutually, and this interference will certainly cause the uncertainty of location.
About crossing location, refer to that the same free degree is retrained by two or more obligatory points, also weighed position is interfered or resetting.The location of part must be considered in mechanical processing process, its locate mode choose the crudy being directly connected to part.According to principle of six-point fixing, location is divided into location and not exclusively location completely.Usual employing is located completely, adopts not exclusively location when some are less.But, in actual process, some parts that a kind of locating surface is comparatively large or rigidity is poor can be run into again, locate completely if adopted, due to the factor such as distortion of workpiece self, the problem such as the instability of location or the distortion of workpiece can be caused.In such technique, some can be adopted to cross the mode of location, make the effect that its crudy reaches desirable.
Therefore, in actual production, on workpiece, the same free degree is repeated restriction by several positioning support support point, and this location repeating to limit the same free degree was called as location.In the ordinary course of things, cross location and be not allowed to, he can cause uncertainty and the unreliability of Workpiece fixing, causes producing larger site error between Workpiece fixing surface and fixture setting element, and serious interference occurs.
So, the problem that the radial location produced when further illustrating spacer location, bearing two location and axial location are interfered mutually, as shown in Figure 1, due to the existence of mismachining tolerance, be difficult to the exact vertical ensureing spacer bottom surface and its axis, as Fig. 1 the error of perpendicularity 0.003mm that identifies, that is, when endoporus is for locating, the bottom surface as plane of orientation cannot all lean against on bearing face, can only form the cooperation of point cantact.
Summary of the invention
For this reason, the present invention produces the problem of interfering to overcome conventional bearings two location spacer when locating, and proposes a kind ofly effectively to solve bearing two location spacer of interfering two location.
For realizing goal of the invention of the present invention, the technical scheme adopted is:
A kind of bearing two location spacer, its radial location cylindrical fit face is part spacer section inner cylinder face, and spacer inner cylinder face remainder internal diameter is greater than this part spacer section internal diameter, and the axial length of this part spacer section is 1/20 ~ 1/8 of whole spacer axial length, and length is not more than 2.5mm and is not less than 1mm.
According to bearing of the present invention two location spacer, there is an interior collar structure, and the endoporus of this interior collar structure is the cylindrical fit face of radial location, remainder is processed into sky cutter, therefore, when assembling, within spacer has, the axle collar is the swing upset space of fulcrum, thus on the one hand, radial location cylindrical fit face ensures the needs of radial location, and the swing reversion space that this part forms fulcrum formation ensure that the accuracy that end face mating surface is located, eliminate interference.
Above-mentioned bearing two location spacer, for the spacer of endoporus cylindrical fit face diameter at 100mm ~ 150mm, the axial length with the spacer section in cylindrical fit face is 2mm.
Above-mentioned bearing two location spacer, the center with the spacer section in cylindrical fit face is 1/4 ~ 2/5 of spacer axial length to the distance of spacer one end face.
Above-mentioned bearing two location spacer, the center with the spacer section in cylindrical fit face is 1/3 of spacer axial length to the distance of spacer one end face.
Above-mentioned bearing two location spacer, has the spacer section 1.0mm ~ 2.0mm less of other spacer section internal diameters in cylindrical fit face.
Accompanying drawing explanation
Fig. 1 is a kind of for the structural representation of high-speed, high precision precision bearing with conventional spacer.
Fig. 2 is according to a kind of spacer structure schematic diagram for high-speed, high precision precision bearing of the present invention.
Detailed description of the invention
With reference to Figure of description 1, the endoporus cylinder of to be a kind of radial location cylindrical fit face of routine be internal diameter 130mm, quality of fit is IT6, basic hole system, a kind of tight fit, therefore, spacer constraint axle, when there is mismachining tolerance, above-mentioned tight fit is difficult to the cooperation that spacer adjustment is contacted on end face.
For this reason, see Figure of description 2, a kind of bearing two location spacer, its basic characteristics are, cylindrical fit face is used in its radial location, i.e. part shown in Φ 130H6 in Fig. 2, same Fig. 1 be part spacer section inner cylinder face, and spacer inner cylinder face remainder is processed into sky cutter, internal diameter is greater than this part spacer section internal diameter, thus, during location, this part forms fulcrum, make spacer have certain activity surplus, thus eliminate interference, ensure that the location of end face face mating surface.
In order to obtain required activity surplus, what need to ensure be the axial length of the spacer section with radial location cylindrical fit face is 1/20 ~ 1/8 of whole spacer axial length, be designated as first condition, and length is not more than 2.5mm and is not less than 1mm, is designated as second condition.
Should be appreciated that first first condition will meet, when also meeting second condition, the value drawn when there being first condition, in the restriction range of second condition, can directly be taken.
According to said structure, obviously, when the proportion shared by fulcrum is larger, said activity surplus can be reduced, but can not be excessive, otherwise the precision of radial location just cannot realize.For this reason, what need first to want certificates handling is positioning precision, when meeting positioning precision, consider said activity surplus again, for this reason, such scheme is an experience range often verified, can consider that the value of above-mentioned scope carries out precision check, obtaining the length of rational described spacer section when designing.
In Fig. 2, spacer axial length is 20mm, and the so corresponding axial length with the spacer section in cylindrical fit face is 2mm, corresponding endoporus cylindrical fit face endoporus Φ 130mm, is a kind of good spacer structure of result of use through checking.
Through rationally checking, for the spacer of endoporus cylindrical fit face diameter at 100mm ~ 150mm, the axial length with the spacer section in cylindrical fit face is 2mm.Ying Zhi, is generally not less than 15mm for endoporus cylindrical fit face diameter at its axial length of spacer of 100mm ~ 150mm.
Preferably, the center with the spacer section in cylindrical fit face is 1/4 ~ 2/5 of spacer axial length, in other words eccentric setting to the distance of spacer one end face, can make the adjustment surplus of one end can be larger.But can not be too eccentric, otherwise can be that the adjustment surplus of one end can excessive, produce and be significantly out of shape, affect the life-span of mating surface, and positioning precision decline is larger.
Preferably, the center with the spacer section in cylindrical fit face is 1/3 of spacer axial length to the distance of spacer one end face, this constitutional balance adjustment surplus the structure of the problem the best preventing positioning precision on the low side.
Preferably, there is the spacer section 1.0mm ~ 2.0mm less of other spacer section internal diameters in cylindrical fit face, in said structure, when carrying out the adjustment of mating surface, the swing of spacer can receive the constraint of axle, and perpendicularity as shown in Figure 2, this adjustment meets said perpendicularity and requires, obvious activity surplus is relevant with perpendicularity, and meet the basic calculating of trigonometric function, those skilled in the art easily designs accordingly, with this understanding, the difference in internal diameters of 1.0mm ~ 2.0mm can meet the application of most spacer, should note, here the requirement selected is perpendicularity.
Claims (5)
1. bearing two location spacer, it is characterized in that, its radial location cylindrical fit face is part spacer section inner cylinder face, and spacer inner cylinder face remainder internal diameter is greater than this part spacer section internal diameter, and the axial length of this part spacer section is 1/20 ~ 1/8 of whole spacer axial length, and length is not more than 2.5mm and is not less than 1mm.
2. bearing according to claim 1 two location spacer, it is characterized in that, for the spacer of endoporus cylindrical fit face diameter at 100mm ~ 150mm, the axial length with the spacer section in radial location cylindrical fit face is 2mm.
3. bearing according to claim 1 and 2 two location spacer, is characterized in that, the center with the spacer section in radial location cylindrical fit face is 1/4 ~ 2/5 of spacer axial length to the distance of spacer one end face.
4. bearing according to claim 3 two location spacer, is characterized in that, the center with the spacer section in radial location cylindrical fit face is 1/3 of spacer axial length to the distance of spacer one end face.
5. bearing according to claim 1 two location spacer, is characterized in that having the spacer section 1.0mm ~ 2.0mm less of spacer inner cylinder face remainder internal diameter in radial location cylindrical fit face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210406218.8A CN102896331B (en) | 2012-10-23 | 2012-10-23 | Spacer bush for double positioning of bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210406218.8A CN102896331B (en) | 2012-10-23 | 2012-10-23 | Spacer bush for double positioning of bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102896331A CN102896331A (en) | 2013-01-30 |
| CN102896331B true CN102896331B (en) | 2015-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210406218.8A Active CN102896331B (en) | 2012-10-23 | 2012-10-23 | Spacer bush for double positioning of bearing |
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| Country | Link |
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| CN (1) | CN102896331B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2425899Y (en) * | 2000-05-30 | 2001-04-04 | 宝山钢铁股份有限公司 | Multi-section tandem support roller |
| CN2805968Y (en) * | 2005-06-30 | 2006-08-16 | 宝山钢铁股份有限公司 | Bearing pack of backing roll |
| CN201705817U (en) * | 2010-06-22 | 2011-01-12 | 徐工集团工程机械股份有限公司科技分公司 | Cantilever type transmission mechanism |
| CN201994761U (en) * | 2011-03-18 | 2011-09-28 | 天津赛瑞机器设备有限公司 | Shaft sleeve for positioning and installing rotating shaft bearing of motor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3362765A (en) * | 1963-05-28 | 1968-01-09 | Plastic & Rubber Prod Co | Shaft bearing and replaceable bearing insert therefor |
| JPS58207526A (en) * | 1982-05-15 | 1983-12-03 | エス・カ−・エフ・ク−ゲルラ−ゲルフアブリケン・ゲ−エムベ−ハ− | Sealing device for bearing bush |
| CN2744449Y (en) * | 2004-10-30 | 2005-12-07 | 强鸿枭 | Angular contact ball bearing symmetry type machine tool main axle |
| DK2126267T3 (en) * | 2006-10-26 | 2015-03-30 | Hunter Douglas Ind Switzerland | Connector for a blind between a viklingsaksel and a head portion thereof |
| CN202921929U (en) * | 2012-10-23 | 2013-05-08 | 德州普利森机床有限公司 | Separation sleeve for bearing double-positioning |
-
2012
- 2012-10-23 CN CN201210406218.8A patent/CN102896331B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2425899Y (en) * | 2000-05-30 | 2001-04-04 | 宝山钢铁股份有限公司 | Multi-section tandem support roller |
| CN2805968Y (en) * | 2005-06-30 | 2006-08-16 | 宝山钢铁股份有限公司 | Bearing pack of backing roll |
| CN201705817U (en) * | 2010-06-22 | 2011-01-12 | 徐工集团工程机械股份有限公司科技分公司 | Cantilever type transmission mechanism |
| CN201994761U (en) * | 2011-03-18 | 2011-09-28 | 天津赛瑞机器设备有限公司 | Shaft sleeve for positioning and installing rotating shaft bearing of motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102896331A (en) | 2013-01-30 |
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