CN201179599Y - Tool for assembling crankshaft back-up bearing of crankshaft box - Google Patents
Tool for assembling crankshaft back-up bearing of crankshaft box Download PDFInfo
- Publication number
- CN201179599Y CN201179599Y CNU2008200979464U CN200820097946U CN201179599Y CN 201179599 Y CN201179599 Y CN 201179599Y CN U2008200979464 U CNU2008200979464 U CN U2008200979464U CN 200820097946 U CN200820097946 U CN 200820097946U CN 201179599 Y CN201179599 Y CN 201179599Y
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- China
- Prior art keywords
- bearing
- crankshaft
- diameter
- gland
- step axle
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- 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.)
- Expired - Fee Related
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The utility model discloses a tool for assembling a crankshaft supporting bearing on a crankcase. The tool comprises a base with a guiding axle, wherein the guiding axle on the upper end of the base is set as a step axle; a large diameter section on the lower part of the step axle is a positioning lug boss used to determine axial positional accuracy during assembling a bearing; the diameter of the positioning lug boss is less than the diameter of a small-diameter end of a bearing mounting hole on the crankcase, and is more than or equal to the outside diameter of an inner ring of the crankshaft supporting bearing; a small-diameter section of the step axle is a guiding section used for assembling the bearing; and a pressing sleeve used to press the bearing is sleeved on the small-diameter section of the step axle, and is in clearance fit with the guiding axle. The tool can increase the assembly precision of a bearing and prevents a crankcase body from being damaged; meanwhile, the tool has the advantages of simple structure, low labor intensity and high work efficiency.
Description
Technical field
The utility model relates to a kind of bearing driver, particularly a kind of instrument that assembles the crankshaft support bearing of crankshaft box of motorcycle engine.
Background technology
Bearing is a kind of standard component, is widely used as the supporting between motorcycle shaft and the hole.At present, the assembly tool of the block bearing of known two-stroke motorcycle engine crankshaft axle journal comprises base and the platen with axis of guide.Wherein the platen lower surface is provided with the boss that diameter equates with the bearing outer ring external diameter, and platen and boss are provided with centre bore, and the diameter of platen is greater than the diameter of crankcase crank chamber.Bearing mounting hole is a stepped hole.Adopt existing assembly tool that bearing is assembled on the crankcase, be that the axis of guide of base is upwards penetrated from the miner diameter end of bearing mounting hole, pass from its bigger diameter end, be set in bearing and platen on the axis of guide successively then, assembling pressure acts on the platen, boss promotion bearing by platen is assemblied in its interference in the installing hole of crankcase, with till the end face of engine crankshaft casing contacts, determine the axial rigging position of bearing in the crankcase installing hole until the platen lower surface thus.According to the assembly tool of said structure,, cause platen to press down excessively easily and weigh engine crankshaft casing end face wounded, and be difficult to guarantee the precision of bearing shaft to rigging position owing in the assembling process platen applied pressure and stroke are difficult to accurately control.In addition, platen not only diameter is big, and weight is big, and the labour intensity when causing assembly crewman's installation or removal platen is big, inefficiency.
Summary of the invention
The purpose of this utility model is at the deficiencies in the prior art, a kind of instrument of crankshaft support bearing of built-up crankshaft case is provided, it can improve the assembly precision of bearing, avoids crankcase to sustain damage, have simultaneously simple in structure, labour intensity is low and the advantage of high efficiency.
The purpose of this utility model is achieved in that and comprises the base with axis of guide, the axis of guide of base upper end is made as the step axle, the big footpath section of this step axle bottom is to be used for determining the positioning boss of bearing assembled shaft to positional precision, the diameter of the diameter of positioning boss＜crankcase upper bearing (metal) installing hole miner diameter end and 〉=external diameter of crankshaft support bearing inner race, the path section of step axle is the guide section of running in bearings, a path Duan Shangyu axis of guide matched in clearance that is used for being sleeved on to the gland that bearing is exerted pressure the step axle.
The described thickness that is used for definite bearing assembled shaft to the height＞crankcase upper bearing (metal) installing hole path end wall of the positioning boss of positional precision.
The described external diameter that is used for the external diameter 〉=crankshaft support bearing outer ring of the gland of exerting pressure to bearing.
The described axial length that is used for the axial length＞step axle path section of the gland of exerting pressure to bearing.
The axial length of the axial length sum＞step axle path section of described axial length that is used for the gland of exerting pressure and bearing to bearing.
The described outer surface that is used for the gland of exerting pressure to bearing is provided with anti-skidding line.
Adopted such scheme, the axis of guide on the base of this assembly tool is made as the step axle, the big footpath section of this step axle bottom is to be used for determining the positioning boss of bearing assembled shaft to positional precision, the diameter of the diameter of positioning boss＜crankcase upper bearing (metal) installing hole miner diameter end and 〉=external diameter of crankshaft support bearing inner race, the thickness of the height of positioning boss＞crankcase upper bearing (metal) installing hole path end wall, the miner diameter end that makes positioning boss can pass crankcase upper bearing (metal) installing hole extend in the bearing mounting hole, axial dimensional chain for assembly calculating according to bearing determines that positioning boss stretches into the position in the bearing mounting hole, carries out accurate axial location to the position of bearings that fits into installing hole thus.The path section of step axle is the guide section of running in bearings, a path Duan Shangyu axis of guide matched in clearance that is used for being sleeved on the step axle to the gland that bearing is exerted pressure, the described external diameter that is used for the external diameter 〉=crankshaft support bearing outer ring of the gland of exerting pressure to bearing, the contact-making surface that has guaranteed gland and bearing reaches maximization, and the bearing that sky is enclosed within on the axis of guide can be accepted exerting pressure of gland reposefully.During this instrument of employing running in bearings, elder generation is enclosed within the bearing sky on the axis of guide and is positioned at the mouth end of crankcase installing hole, to be used for again being sleeved on the upper surface that is positioned at bearing on the axis of guide to the gland that bearing is exerted pressure, by gland the assembling pressure of granting is passed to bearing, the bearing interference fit is advanced the installing hole of crankcase, when bearing with after positioning boss contacts, bearing is limited by the position of positioning boss and determines axial rigging position, even because of pressure assembling force excessive, can prevent that also bearing from surpassing rigging position, guaranteed the assembly precision of bearing.Owing to adopt gland, and the axial length that is used for the axial length＞step axle path section of the gland of exerting pressure to bearing, the axial length that perhaps is used for the axial length sum＞step axle path section of the axial length of the gland of exerting pressure and bearing to bearing, when bearing was granted assembling pressure, gland can not injure the mould assembling face of crankcase.And the gland upper end of can not emerging all the time, axis of guide upper end contacts with the axis of guide in the time of can preventing that pressing machine from exerting pressure, and causes the damage to the axis of guide.The described outer surface that is used for the gland of exerting pressure to bearing is provided with anti-skidding line, and the feel during the hand-held gland of assembly crewman is clear, is not easy landing.Owing to adopt gland that bearing is exerted pressure, the platen that the weight of gland adopts with respect to prior art in light weight many reduced assembly crewman's labour intensity, helps increasing work efficiency.
The utility model also has advantage simple in structure, practical except that having above-mentioned advantage; And be particularly useful for the block bearing assembling of the crankshaft journal in the two-stroke motorcycle engine high volume production process.
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is an assembly structure schematic diagram of the present utility model;
Fig. 2 is the structural representation of the crankcase among Fig. 1;
Fig. 3 is the structural representation of the base among Fig. 1;
Fig. 4 is the part section structural representation of the gland among Fig. 1;
In the accompanying drawing, 1 is crankcase, and 2 is base, and 3 is the crankshaft support bearing, and 3a is an inner ring, and 3b is the outer ring, and 4 is gland, and 4a is anti-skidding line, and 5 is installing hole, and 6 is crank chamber, and 7 is positioning boss, and 8 is the axis of guide.
The specific embodiment
Referring to figs. 1 through Fig. 4, the instrument of the crankshaft support bearing of built-up crankshaft case of the present utility model, the gland 4 that comprises base 2 and be used for exerting pressure to bearing with axis of guide 8.Described base 2 is structure as a whole with the axis of guide 8 of its upper end, the axis of guide 8 is made as the step axle, the big footpath section of step axle bottom is to be used for determining the positioning boss 7 of bearing assembled shaft to positional precision, the diameter of diameter＜crankcase 1 upper bearing (metal) installing hole 5 miner diameter ends of positioning boss 7 and 〉=external diameter of crankshaft support bearing 3 inner ring 3a, the thickness of height＞crankcase 1 upper bearing (metal) installing hole 5 path end walls of positioning boss 7, for guaranteeing the precision of bearing assembling axial location, the height of positioning boss 7 is determined by the axial dimensional chain for assembly of bearing.The path section of described step axle is the guide section of running in bearings, and the diameter of the inner ring 3a circle center hole of the diameter pact＜bearing 3 of this guide section makes bearing 3 can be enclosed within on the guide section and slides to 5 mouthfuls of ends of bearing mounting hole of crankcase 1 along this guide section.Positioning boss 7 and the axis of guide 8 concentrics on the described base 2.One is used for being sleeved on the path section of step axle to the gland 4 that bearing is exerted pressure and forms and the axis of guide 8 matched in clearance, be positioned at the upper end of bearing 3, the gland 4 that is used for exerting pressure to bearing is for cylindric, the external diameter of gland 4 equals or approximately greater than the external diameter of crankshaft support bearing 3 outer ring 3b, the axial length of the axial length of gland 4＞step axle path section.The outer surface that is used for the gland 4 of exerting pressure to bearing is provided with anti-skidding line 4a.
The utility model is not limited to the foregoing description, wherein is used for the axial length of the axial length sum＞step axle path section of the axial length of the gland 4 of exerting pressure to bearing and bearing 3, also can reach effect same as the previously described embodiments.
When adopting the utility model assembled shaft, the crank chamber 6 that makes crankcase 1 up, the axis of guide on the base 28 is passed bearing mounting hole 5, make positioning boss 7 pass bearing mounting hole 5 miner diameter ends, allow the upper surface of positioning boss 7 be positioned at the bigger diameter end of installing hole 5, its concrete position is determined according to the axial dimensional chain for assembly of bearing 3.Crankshaft support bearing 3 skies are enclosed within on the guide section of the axis of guide 8, again gland 4 are set on the guide section of the axis of guide 8.By pressing machine pressure assembling force is bestowed in the upper surface of gland 4, crankshaft support bearing 3 is interference fitted in the bigger diameter end of bearing mounting hole 5, when the lower surface of bearing 3 with promptly be assembled to the position after the upper surface of positioning boss 7 contacts, make crankshaft support bearing 3 self-align in bearing mounting hole 5 by positioning boss 7.Take off gland 4 and base 2 then, finish assembling.
Those skilled in the art change under the spiritual principles of the utility model claim institute limited range, must fall into the protection domain of the utility model claim.
Claims (6)
1. the instrument of the crankshaft support bearing of a built-up crankshaft case, comprise base with axis of guide, it is characterized in that: the axis of guide of described base upper end is made as the step axle, the big footpath section of this step axle bottom is to be used for determining the positioning boss of bearing assembled shaft to positional precision, the diameter of the diameter of positioning boss＜crankcase upper bearing (metal) installing hole miner diameter end and 〉=external diameter of crankshaft support bearing inner race, the path section of step axle is the guide section of running in bearings, a path Duan Shangyu axis of guide matched in clearance that is used for being sleeved on to the gland that bearing is exerted pressure the step axle.
2. the instrument of the crankshaft support bearing of built-up crankshaft case according to claim 1 is characterized in that: the described thickness that is used for definite bearing assembled shaft to the height＞crankcase upper bearing (metal) installing hole path end wall of the positioning boss of positional precision.
3. the instrument of the crankshaft support bearing of built-up crankshaft case according to claim 1 is characterized in that: the described external diameter that is used for the external diameter 〉=crankshaft support bearing outer ring of the gland of exerting pressure to bearing.
4. according to the instrument of the crankshaft support bearing of the arbitrary described built-up crankshaft case of claim 1～3, it is characterized in that: the described axial length that is used for the axial length＞step axle path section of the gland of exerting pressure to bearing.
5. according to the instrument of the crankshaft support bearing of the arbitrary described built-up crankshaft case of claim 1～3, it is characterized in that: the axial length of the axial length sum＞step axle path section of described axial length that is used for the gland of exerting pressure and bearing to bearing.
6. the instrument of the crankshaft support bearing of built-up crankshaft case according to claim 1 is characterized in that: the described outer surface that is used for the gland of exerting pressure to bearing is provided with anti-skidding line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200979464U CN201179599Y (en) | 2008-03-31 | 2008-03-31 | Tool for assembling crankshaft back-up bearing of crankshaft box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200979464U CN201179599Y (en) | 2008-03-31 | 2008-03-31 | Tool for assembling crankshaft back-up bearing of crankshaft box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201179599Y true CN201179599Y (en) | 2009-01-14 |
Family
ID=40249103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200979464U Expired - Fee Related CN201179599Y (en) | 2008-03-31 | 2008-03-31 | Tool for assembling crankshaft back-up bearing of crankshaft box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201179599Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102922257A (en) * | 2012-11-19 | 2013-02-13 | 江苏中联铝业有限公司 | Wheel bearing press-mounting device |
| CN104972303A (en) * | 2015-07-14 | 2015-10-14 | 力达(中国)机电有限公司 | Assembling device and method of vortex machine drive crankshaft |
| CN106182739A (en) * | 2016-08-31 | 2016-12-07 | 中山市源业精密机械厂 | A kind of flexible pipe forming machine |
| CN110617223A (en) * | 2019-10-21 | 2019-12-27 | 无锡锡压压缩机有限公司 | Bearing installation device and method |
| CN113305780A (en) * | 2021-06-18 | 2021-08-27 | 中电科航空电子有限公司 | A mounting tool that is used for leaded light post clamp in narrow and small space |
-
2008
- 2008-03-31 CN CNU2008200979464U patent/CN201179599Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102922257A (en) * | 2012-11-19 | 2013-02-13 | 江苏中联铝业有限公司 | Wheel bearing press-mounting device |
| CN102922257B (en) * | 2012-11-19 | 2015-05-13 | 江苏中联铝业有限公司 | Wheel bearing press-mounting device |
| CN104972303A (en) * | 2015-07-14 | 2015-10-14 | 力达(中国)机电有限公司 | Assembling device and method of vortex machine drive crankshaft |
| CN106182739A (en) * | 2016-08-31 | 2016-12-07 | 中山市源业精密机械厂 | A kind of flexible pipe forming machine |
| CN110617223A (en) * | 2019-10-21 | 2019-12-27 | 无锡锡压压缩机有限公司 | Bearing installation device and method |
| CN113305780A (en) * | 2021-06-18 | 2021-08-27 | 中电科航空电子有限公司 | A mounting tool that is used for leaded light post clamp in narrow and small space |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090114 Termination date: 20150331 |
|
| EXPY | Termination of patent right or utility model |