CN107407330A - 滑动轴承 - Google Patents

滑动轴承 Download PDF

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Publication number
CN107407330A
CN107407330A CN201680012644.XA CN201680012644A CN107407330A CN 107407330 A CN107407330 A CN 107407330A CN 201680012644 A CN201680012644 A CN 201680012644A CN 107407330 A CN107407330 A CN 107407330A
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stria
sliding bearing
valley
split component
bearing
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关大辅
高木裕史
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Taiho Kogyo Co Ltd
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Taiho Kogyo Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • F16C33/06Sliding surface mainly made of metal
    • F16C33/08Attachment of brasses, bushes or linings to the bearing housing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00Sliding-contact bearings for exclusively rotary movement
    • F16C17/02Sliding-contact bearings for exclusively rotary movement for radial load only
    • F16C17/022Sliding-contact bearings for exclusively rotary movement for radial load only with a pair of essentially semicircular bearing sleeves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00Sliding-contact bearings for exclusively rotary movement
    • F16C17/02Sliding-contact bearings for exclusively rotary movement for radial load only
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • F16C33/046Brasses; Bushes; Linings divided or split, e.g. half-bearings or rolled sleeves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • F16C33/06Sliding surface mainly made of metal
    • F16C33/10Construction relative to lubrication
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • F16C33/06Sliding surface mainly made of metal
    • F16C33/10Construction relative to lubrication
    • F16C33/1025Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • F16C33/06Sliding surface mainly made of metal
    • F16C33/10Construction relative to lubrication
    • F16C33/1025Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/103Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • F16C33/06Sliding surface mainly made of metal
    • F16C33/10Construction relative to lubrication
    • F16C33/1025Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • F16C33/1065Grooves on a bearing surface for distributing or collecting the liquid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • F16C33/06Sliding surface mainly made of metal
    • F16C33/12Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
    • F16C33/122Multilayer structures of sleeves, washers or liners
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • F16C33/06Sliding surface mainly made of metal
    • F16C33/14Special methods of manufacture; Running-in
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C9/00Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
    • F16C9/02Crankshaft bearings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Sliding-Contact Bearings (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

本发明涉及一种滑动轴承(1),上下配置有与轴向平行地将圆筒二等分而成的对开构件(2)、(2),在下侧的对开构件(2)的轴向端部,在旋转方向下游侧沿圆周方向设有细槽(3),在细槽(3)的轴向外侧设有形成为比与曲轴(11)的抵接面低的周缘部(2a),使细槽(3)的底面(3a)形成为:在与细槽(3)的长尺寸方向正交的剖面视图中呈曲线状。由此,本发明能得到摩擦降低效果,进而能抑制总和的流出油量。

Description

滑动轴承
技术领域
本发明涉及一种滑动轴承的技术,涉及一种上下配置有与轴向平行地将圆筒二等分而成的对开构件的滑动轴承的技术。
背景技术
以往,公知作为用于对发动机的曲轴进行轴支承的轴承且具有使将圆筒形状二等分而成的两个构件接合的对开构造的滑动轴承,但由于在冷态时油的粘度高,因此存在摩擦大的问题。所以,公知在所述轴承的轴向两端部沿整个一周形成有油沟部分(细槽)的轴承(例如,参照专利文献1)。
现有技术文献
专利文献
专利文献1:日本特表2003-532036号公报
发明内容
发明所要解决的问题
但是,在以往的形成有细槽的轴承中,无法兼顾油的引入量的增加和油从轴向两端部的漏泄量的抑制,无法期待进一步的摩擦降低效果。
因此,本发明鉴于上述问题,提供一种能抑制总和的流出油量并能得到进一步的摩擦降低效果的滑动轴承。
用于解决问题的方案
本发明所要解决的问题如上所述,接着,对用于解决该问题的方案进行说明。
即,在本发明中,滑动轴承上下配置有与轴向平行地将圆筒二等分而成的对开构件,在所述下侧的对开构件的轴向端部,在旋转方向下游侧沿圆周方向设有细槽,在所述细槽的轴向外侧设有形成为比所述滑动轴承与轴的抵接面低的周缘部,
在与所述细槽的长尺寸方向平行的剖面视图中,在所述细槽的底面交替配置有山部和谷部。
在本发明中,使所述谷部形成为:在与长尺寸方向平行的剖面视图中呈圆弧状。
发明效果
作为本发明的效果,实现以下所示的效果。
即,通过设置不妨碍油膜压力的产生的程度的细槽,能减少滑动面积并且得到摩擦降低效果,并且,能抑制总和的流出油量。此外,在细槽的底面交替配置有山部和谷部,由此,润滑油被顺畅地引入,回吸油量增加,能得到摩擦降低效果,并且,能抑制总和的流出油量。
附图说明
图1是表示本发明的实施方式的滑动轴承的主视图。
图2(A)是表示构成本发明的实施方式的滑动轴承的对开构件的俯视图,图2(B)是图2(A)的II(B)-II(B)线剖面图,图2(C)是图2(A)的II(C)-II(C)线剖面图。
图3(A)是表示本发明的实施方式的细槽的II(B)-II(B)线剖面放大图,图3(B)是表示该细槽的立体局部剖面图。
图4是表示本发明的实施方式的细槽以及刀具的II(B)-II(B)线剖面放大图。
图5是表示本发明的另一实施方式的对开构件的II(C)-II(C)线剖面图。
具体实施方式
接着,对发明的实施方式进行说明。需要说明的是,图1是滑动轴承1的主视图,将画面的上下设为上下方向,将画面的跟前方向以及深处方向设为轴向(前后方向)。
首先,使用图1以及图2对构成本发明的实施方式的滑动轴承1的对开构件2进行说明。
如图1所示,滑动轴承1是圆筒状的构件,被应用于发动机的曲轴11的滑动轴承构造。滑动轴承1由两个对开构件2、2构成。两个对开构件2、2是与轴向平行地将圆筒二等分而成的形状,且形成为剖面呈半圆形。在本实施方式中,对开构件2、2上下配置,在左右配置有接合面。在通过滑动轴承1对曲轴11进行轴支承的情况下,形成规定的间隙,并从未图示的油路对该间隙供给润滑油。
在图2(A)中示出了上侧以及下侧的对开构件2。需要说明的是,在本实施方式中,曲轴11的旋转方向如图1的箭头所示地设为主视观察时的顺时针方向。此外,轴承角度ω以图2(B)中的右端的位置为0度,在图2(B)中,将逆时针方向设为正。即,在图2(B)中,定义为:左端的位置的轴承角度ω为180度,下端的位置的轴承角度ω为270度。
在上侧的对开构件2的内周沿圆周方向设有槽,在中心设有圆形的孔。此外,在上侧的对开构件2的左右配置有接合面。如图2(C)所示,对开构件2具有涂覆层23。
在下侧的对开构件2的内周,在其轴向的端部形成有细槽3。
此外,形成细槽3的轴向外侧面的周缘部2a形成为:自对开构件2的外周面的高度h比从对开构件2的外周面至抵接面的高度D低。即,形成为:轴向外侧的周缘部2a比周围与曲轴11的抵接面更低。
使用图2(B)以及图2(C)对细槽3进行说明。
细槽3设于下侧的对开构件2。在本实施方式中,细槽3在轴向并列设有两条。详细而言,细槽3从与曲轴11的旋转方向下游侧接合面(轴承角度ω为180度)分离的位置(轴承角度ω为ω1)朝向轴承角度ω为正的方向(逆时针方向),直至轴承角度ω2地沿圆周方向设置。在下侧的对开构件2中,图2(B)的右侧的接合面为旋转方向上游侧接合面,图2(B)的左侧的接合面为旋转方向下游侧接合面。
如图2(C)所示,细槽3的宽度形成为w。
此外,细槽3的深度d形成为比从对开构件2的外周面至抵接面的高度D短。此外,如图3(A)所示,细槽3的深度d随着从细槽3的长尺寸方向一端朝向另一端而变化。
如图3(A)所示,在作为与长尺寸方向平行的剖面的II(B)-II(B)线剖面视图中,在细槽3的底面3a交替配置地形成有山部3b和谷部3c。
山部3b设于谷部3c与谷部3c之间。山部3b形成为比谷部3c更向内周侧突出。
谷部3c构成为:在II(B)-II(B)线剖面视图中呈圆弧状。谷部3c的圆弧状的端部与邻接的谷部3c的圆弧状的端部连续,并形成为谷部3c与谷部3c的连续部分成为山部3b。
在细槽3的底面3a交替配置地形成有山部3b和谷部3c,由此,所回吸的润滑油的流动变为如图3(B)的箭头所示的那样,因此,流入细槽3的润滑油易于越过细槽3的侧面并向对开构件2的轴向内侧流入。即,润滑油从谷部3c沿山部3b移动,由此,形成向对开构件2的内周面侧的油流而易于越过细槽3的侧面。
通过如此构成,润滑油的回吸量增多,能抑制总和的流出油量。
此外,周缘部2a形成为比细槽3的底面3a更高,由此,成为用于使从滑动面漏泄至轴向端部的油或所回吸的油不会再次漏泄的壁,能抑制漏油量。由此,特别是冷态时的引入油量会增加,能增强由早期升温所带来的低摩擦效果。
此外,周缘部2a形成为比周围与曲轴11的抵接面更低,由此,在曲轴11倾斜而变为仅与轴向一侧端部接触的状态(一端接触状态)时,能减少周缘部2a与曲轴11的接触机会,因此,能防止周缘部2a的损伤。
通过设置本实施方式的细槽3,FMEP减少量增加。特别是在发动机转速低的区域,FMEP减少量增加。在此,所谓FMEP是用于观察摩擦的倾向的值,当FMEP减少量增加时,摩擦降低。例如,在发动机冷态起动时等,FMEP减少量增加,摩擦降低。
接着,对细槽3的形成方法进行说明。
细槽3例如通过切削加工来形成。
在切削加工时,通过刀具来切削对开构件2的内周面。在本实施方式中,使用圆盘锯100来作为刀具。
更详细而言,如图4所示,通过与细槽3的长尺寸方向平行地移动圆盘锯100来切削对开构件2的内周面。
通过如此构成,使圆盘锯100移动,由此,与圆盘锯100的外周(圆弧)相符地,在细槽3的底面3a呈圆弧状地形成谷部3c,在谷部3c与谷部3c之间设有山部3b。
涂覆层23通过在对开构件2的内周面上进行涂布而形成。此时,如图2(C)所示,涂覆层23形成为覆盖细槽3的轴向内侧端部,更详细而言,涂布至细槽3的轴向内侧的侧面的中途部。通过如此构成,由涂覆层23来覆盖细槽3的轴向内侧端部,由此,在曲轴11倾斜而变为仅与轴向一侧端部接触的状态(一端接触状态)时,能减轻细槽3的轴向内侧端部与曲轴11的摩擦。
此外,如图5所示,涂覆层23也可以形成为覆盖整个细槽3。通过如此构成,在曲轴11倾斜而变为仅与轴向一侧端部接触的状态(一端接触状态)时,能减轻细槽3的轴向内侧端部以及轴向外侧端部与曲轴11的摩擦。
如上所述,滑动轴承1上下配置有与轴向平行地将圆筒二等分而成的对开构件2、2,在下侧的对开构件2的轴向端部,在旋转方向下游侧沿圆周方向设有细槽3,在细槽3的轴向外侧设有形成为比滑动轴承1与曲轴11的抵接面低的周缘部2a,在与细槽3的长尺寸方向平行的剖面视图中,在细槽3的底面3a交替配置有山部3b和谷部3c。
通过如此构成,设有不妨碍油膜压力的产生的细槽3,由此,能减少滑动面积并且得到摩擦降低效果,并且,能抑制总和的流出油量。此外,在细槽3的底面3a交替配置有山部3b和谷部3c,由此,润滑油被顺畅地引入至对开构件2的内周面,回吸油量增加,能得到摩擦降低效果,并且,能抑制总和的流出油量。
此外,使谷部3c形成为:在与长尺寸方向平行的剖面视图(II(B)-II(B)线剖面视图)中呈圆弧状。
通过如此构成,润滑油沿细槽3的底面3a的谷部3c移动,由此,易于被引入至对开构件2的内周面,能顺畅地向轴向内侧输送润滑油。
附图标记说明:
1 滑动轴承
2 对开构件
2a 周缘部
3 细槽
3a 底面
3b 山部
3c 谷部
11 曲轴

Claims (2)

1.一种滑动轴承,上下配置有与轴向平行地将圆筒二等分而成的对开构件,其特征在于,
在所述下侧的对开构件的轴向端部,在旋转方向下游侧沿圆周方向设有细槽,在所述细槽的轴向外侧设有形成为比所述滑动轴承与轴的抵接面低的周缘部,
在与所述细槽的长尺寸方向平行的剖面视图中,在所述细槽的底面交替配置有山部以及谷部。
2.根据权利要求1所述的滑动轴承,其特征在于,
使所述谷部形成为:在与长尺寸方向平行的剖面视图中呈圆弧状。
CN201680012644.XA 2015-02-27 2016-02-26 滑动轴承 Pending CN107407330A (zh)

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