CN102896331A - Spacer bush for double positioning of bearing - Google Patents
Spacer bush for double positioning of bearing Download PDFInfo
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- CN102896331A CN102896331A CN2012104062188A CN201210406218A CN102896331A CN 102896331 A CN102896331 A CN 102896331A CN 2012104062188 A CN2012104062188 A CN 2012104062188A CN 201210406218 A CN201210406218 A CN 201210406218A CN 102896331 A CN102896331 A CN 102896331A
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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 the two location of a kind of bearing spacer.
Background technology
In the machinery assembling, because the unbalanced moments that bearing produces with the gap that exists between spacer and the main shaft diameter of axle during main shaft High Rotation Speed affect stationarity and the rotating accuracy of main shaft rotation, the high-speed high-precision bearing adopts radial and axial pair of locate mode to guarantee the assembly precision after the bearing installation and assembles rear dynamic equilibrium problems with spacer is normal in order to prevent.This pair of locate mode is a kind of locate mode of crossing in theory in the location, this problem that radial location and axial location are interfered mutually when crossing the location and having the location, and this interference will certainly cause the uncertainty of location.
About crossing the location, refer to that the same free degree is retrained by two or more obligatory points, also interfere or resetting weighed position.In mechanical processing process, must consider the location of part, its locate mode choose the crudy that is directly connected to part.According to principle of six-point fixing, the location is divided into fully location and not exclusively location.Usually adopt fully location, in some less situations, adopt not exclusively location.But, in actual process, large or some the relatively poor parts of rigidity of a kind of locating surface can be run into again, if adopt fully location, owing to the factors such as distortion of workpiece self, the problems such as distortion of the unstable or workpiece of location can be caused.In such technique, the mode that can adopt some to cross the location makes its crudy reach desirable effect.
Therefore, in actual production, the same free degree is repeated restriction by several positioning support support points on the workpiece, and this location of repeating to limit the same free degree was called as the location.In the ordinary course of things, cross the location and be not allowed to, he can cause uncertainty and the unreliability of workpiece location, causes producing larger site error between workpiece locating surface and the anchor clamps setting element, and serious interference occurs.
So, further specify the problem that the radial location that produces when locate with spacer the two location of bearing and axial location are interfered mutually, as shown in Figure 1, because the existence of mismachining tolerance, be difficult to guarantee the strict vertical of spacer bottom surface and its axis, the error of perpendicularity 0.003mm that identifies such as Fig. 1, that is to say, when endoporus is used for the location, can't all lean against on the bearing face as the bottom surface of plane of orientation, can only form the cooperation of a contact.
Summary of the invention
For this reason, the present invention produces the problem of interfering in order to overcome the two location of conventional bearing with spacer when locating, and proposes a kind of two location of bearing spacer that can effectively solve the interference of two location.
For realizing goal of the invention of the present invention, the technical scheme that adopts is:
The two location of a kind of bearing spacer, its radial location is part spacer section inner cylinder face with the cylindrical fit 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.
Has an interior collar structure according to the two location of bearing of the present invention with spacer, and the endoporus of collar structure is the cylindrical fit face that radial location is used in being somebody's turn to do, remainder is processed into the sky cutter, therefore, and when assembling, spacer has the swing upset space take the interior axle collar as fulcrum, thereby on the one hand, radial location guarantees the needs of radial location with the cylindrical fit face, and this part consists of the accuracy that the swing counter-rotating space of fulcrum formation has guaranteed end face mating surface location, has eliminated interference.
Spacer is used in the two location of above-mentioned bearing, and for the spacer of endoporus cylindrical fit face diameter at 100mm ~ 150mm, the axial length with spacer section of cylindrical fit face is 2mm.
Spacer is used in the two location of above-mentioned bearing, and the center with spacer section of cylindrical fit face is 1/4 ~ 2/5 of spacer axial length to the distance of spacer one end face.
Spacer is used in the two location of above-mentioned bearing, and the center with spacer section of cylindrical fit face is 1/3 of spacer axial length to the distance of spacer one end face.
Spacer is used in the two location of above-mentioned bearing, has the spacer section of cylindrical fit face than the little 1.0mm ~ 2.0mm of other spacer section internal diameters.
Description of drawings
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 the high-speed, high precision precision bearing of the present invention.
The specific embodiment
With reference to Figure of description 1, the radial location that is a kind of routine is the endoporus cylinder of internal diameter 130mm with the cylindrical fit face, quality of fit is IT6, basic hole system, a kind of tight fit, therefore, spacer constraint axle, exist in the situation of mismachining tolerance, above-mentioned tight fit is difficult to make spacer to be adjusted at the cooperation that end face contacts above.
For this reason, referring to Figure of description 2, the two location of a kind of bearing spacer, its basic characteristics are, its radial location cylindrical fit face, i.e. part shown in the Φ 130H6 among Fig. 2, same Fig. 1 be part spacer section inner cylinder face, and spacer inner cylinder face remainder is processed into the sky cutter, internal diameter is greater than this part spacer section internal diameter, thereby, during the location, this part forms fulcrum, make spacer have certain activity surplus, thereby eliminated interference, guaranteed the location of end face face mating surface.
In order to obtain needed activity surplus, what need to guarantee is that to have radial location be 1/20 ~ 1/8 of whole spacer axial length with the axial length of the spacer section of cylindrical fit face, be designated as first condition, and length is not more than 2.5mm and is not less than 1mm, be designated as second condition.
Should be appreciated that first condition at first will satisfy, when also satisfying second condition, in the restriction range of the value that has first condition to draw at second condition, can directly take.
According to said structure, obviously, when the shared proportion of fulcrum is larger, can reduce said activity surplus, but can not be excessive, otherwise the precision of radial location just can't realize.For this reason, what need at first want certificates handling is positioning accuracy, satisfying in the situation of positioning accuracy, consider again said activity surplus, for this reason, such scheme is an often experience scope of checking, can consider that when design the value of above-mentioned scope is carried out the precision check, obtains the length of rational described spacer section.
Among Fig. 2, the spacer axial length is 20mm, and the axial length of the so corresponding spacer section with cylindrical fit face is 2mm, and corresponding endoporus cylindrical fit face endoporus Φ 130mm is preferably spacer structure of a kind 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 spacer section of cylindrical fit face is 2mm.Should know, generally be not less than 15mm for endoporus cylindrical fit face diameter at its axial length of spacer of 100mm ~ 150mm.
Preferably, the center with spacer section of cylindrical fit face is 1/4 ~ 2/5 of spacer axial length to the distance of spacer one end face, and eccentric setting in other words can make the adjustment surplus of an end can be larger.But can not be too eccentric, otherwise can be that the adjustment surplus of an end can be excessive, produce significantly distortion, affect the life-span of mating surface, and positioning accuracy decline is larger.
Preferably, the center with spacer section of cylindrical fit face is 1/3 of spacer axial length to the distance of spacer one end face, this constitutional balance adjust surplus and prevent the structure of problem the best that positioning accuracy is on the low side.
Preferably, has the spacer section of cylindrical fit face than the little 1.0mm ~ 2.0mm of other spacer section internal diameters, in said structure, when carrying out the adjustment of mating surface, the swing of spacer can be received the constraint of axle, and perpendicularity as shown in Figure 2, this adjustment has been satisfied said perpendicularity and has been required to get final product, obviously the activity surplus is relevant with perpendicularity, and satisfies the basic calculating of trigonometric function, and those skilled in the art designs accordingly easily, with this understanding, use 1.0mm the difference in internal diameters of ~ 2.0mm can satisfy most spacers, it should be noted that the requirement of selecting is perpendicularity here.
Claims (5)
1. two location of bearing used spacer, it is characterized in that, its radial location is part spacer section inner cylinder face with the cylindrical fit 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. spacer is used in the two location of bearing according to claim 1, it is characterized in that for the spacer of endoporus cylindrical fit face diameter at 100mm ~ 150mm, the axial length with spacer section of cylindrical fit face is 2mm.
3. spacer is used in the two location of bearing according to claim 1 and 2, it is characterized in that, the center with spacer section of cylindrical fit face is 1/4 ~ 2/5 of spacer axial length to the distance of spacer one end face.
4. spacer is used in the two location of bearing according to claim 3, it is characterized in that, the center with spacer section of cylindrical fit face is 1/3 of spacer axial length to the distance of spacer one end face.
5. spacer is used in the two location of bearing according to claim 1, it is characterized in that having the spacer section of cylindrical fit face than the little 1.0mm ~ 2.0mm of other spacer section internal diameters.
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 true CN102896331A (en) | 2013-01-30 |
| CN102896331B 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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| CN (1) | CN102896331B (en) |
Citations (9)
| 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 |
| US4440401A (en) * | 1982-05-15 | 1984-04-03 | Skf Kugellagerfabriken Gmbh | Seal assembly for bearing cups slidable in axial direction in bore |
| CN2425899Y (en) * | 2000-05-30 | 2001-04-04 | 宝山钢铁股份有限公司 | Multi-section tandem support roller |
| CN2744449Y (en) * | 2004-10-30 | 2005-12-07 | 强鸿枭 | Angular contact ball bearing symmetry type machine tool main axle |
| CN2805968Y (en) * | 2005-06-30 | 2006-08-16 | 宝山钢铁股份有限公司 | Bearing pack of backing roll |
| WO2008049431A1 (en) * | 2006-10-26 | 2008-05-02 | Faber A/S | A bearing insert fitting for roller blinds |
| 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 |
| 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 (9)
| 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 |
| US4440401A (en) * | 1982-05-15 | 1984-04-03 | Skf Kugellagerfabriken Gmbh | Seal assembly for bearing cups slidable in axial direction in bore |
| CN2425899Y (en) * | 2000-05-30 | 2001-04-04 | 宝山钢铁股份有限公司 | Multi-section tandem support roller |
| CN2744449Y (en) * | 2004-10-30 | 2005-12-07 | 强鸿枭 | Angular contact ball bearing symmetry type machine tool main axle |
| CN2805968Y (en) * | 2005-06-30 | 2006-08-16 | 宝山钢铁股份有限公司 | Bearing pack of backing roll |
| WO2008049431A1 (en) * | 2006-10-26 | 2008-05-02 | Faber A/S | A bearing insert fitting for roller blinds |
| 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 |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN102896331B (en) | 2015-04-29 |
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