CN103038007A - 轴承壳的结构化滑动表面 - Google Patents
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- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2220/00—Shaping
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- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
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- Y10T408/03—Processes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
本发明涉及机加工轴承壳(30)的滑动表面的工具,包括用于驱动能够围绕旋转轴线旋转的钻轴(20)的旋转式驱动装置和安装于钻轴(20)上以通过旋转钻轴(20)来切削轴承壳(30)到特定壁厚的至少一个第一切削头。该工具的特征在于,第一切削头能够通过调节装置来在在钻轴的径向方向上具有分量的调节方向上调节,同时钻轴(20)由旋转式驱动装置来旋转。本发明进一步涉及包括有意结构化的滑动表面(31)的轴承壳(30)和用于制造包括有意结构化的滑动表面(31)的轴承壳(30)的方法。
Description
技术领域
本发明涉及具有结构化滑动表面的轴承壳,涉及用来对轴承壳的滑动表面进行机加工并包括安装于钻轴的轴头上的两个切削头的工具,还涉及使用这种钻轴对轴承壳进行机加工的方法。
背景技术
如今,轴承壳的滑动表面的机加工通过所谓的钻穿轴承壳的方式来实施。此处,钻轴以转速X(转数/分钟)旋转,并且在轴向方向上以进给速率Y(mm/转数)移动。钻穿通过插入到轴头中的钻轴来实施,其中轴头的两个切削头彼此间以180°相反地放置。
图1中示出了这种类型的钻轴。钻轴20包括用来将轴承壳30切削到特定壁厚的第一切削头21和用来形成下面将要解释的所谓的暴露区域(缓压表面)的第二切削头22。切削头21和22在轴头上轴向偏开地布置。当钻轴20空转时,可以调节切削圆的直径。在机加工过程中,两个切削头相对于它们的轴向方向、即在钻轴20的径向方向上固定。
图2A显示了轴承壳30的横截面(沿着图3中所示的点划线)。如图2A所示,滑动表面31沿着轴承壳的轴向方向是平坦的。取决于钻轴的转速以及机加工的进给速率,当对滑动表面进行机加工时,在滑动表面(图中未示出)上形成了或多或少精密的但是非常均匀的槽的纹路。这些单个的槽均匀地延伸,并且除了轴承壳的曲率半径以外处于平坦的形式。这种现象作为加工的结果产生,并且当使用上述类型的切削工具时是不可避免的。
暴露区域理解为位于轴承壳的端部处的区域,相比轴承壳其余处的壁厚,那里的轴承壳的壁厚连续减少。以此方式,由于形成轴承的两个轴承壳的连接位置处的不严密所导致的在轴承壳中运转的轴的磨损可以得到减少。
轴承和安装于其中的轴的磨损的另一个原因是当负载施加到轴上时的最小弯曲或倾斜。当该轴承为内燃机中的连接销眼或承受内燃机中的高负载的另一轴承时,轴承上的轴的这些不均匀的负载最终会对发动机的运行表现产生不利的影响。
发明内容
本发明的目的是提供具有改善的耐磨性的轴承壳、制造这种轴承壳的工具以及方法。
该目的通过权利要求1、8和12的特征的方式解决。
根据本发明的工具包括优选为圆柱形的钻轴,其由旋转式驱动装置驱动并同时实施进给运动。钻轴围绕旋转轴线旋转,并且在外圆周处包括至少一个安装于钻轴上或插入其中的第一切削头。在轴承壳的机加工期间,切削头的切削区域与轴承壳的滑动层接触,并且在钻轴的旋转下将轴承壳切削至特定的壁厚,其结果为也同时产生了实际的滑动表面。根据本发明,在该工具的操作期间,第一切削头在其轴向方向上可以由调节装置来调节。调节的方向与旋转轴的方向不同,因此,调节的方向在垂直于旋转轴的方向上具有非零的分量。当钻穿轴承壳时,这允许在轴承壳的滑动区域中以定向的方式来实现轮廓成形。如果作为加工的结果,轴承壳经历了如上所述的非常均匀的成形加工,则该成形加工与定向的轮廓成形相叠加。因此,该定向的结构构成与可能是不可避免地实现的最小槽轮廓成形区别开,并且由于作为加工的结果所产生的轮廓成形的均匀性而也是可辨认的。由于该定向的轮廓成形,滑动轴承壳和安装于其中的轴之间的润滑膜的建立得到改善,操作中的紧急运行性能得到改善,并且实现了操作中的在滑动轴承处的油耗的减少。由于在操作中和在负载下轴的最小弯曲或倾斜通过适应于操作条件的滑动表面的几何形状来补偿或者至少减少,因此得到了这些优势。
为了有效实现结构化的轮廓成形,调节的方向优选地基本上垂直于旋转轴。
钻轴优选地包括至少一个第二切削头。为此目的,第一切削头优选地布置为在工具的进给方向上偏置地位于第二切削头之后。这两个切削头优选地彼此间以180°相反地安装在钻轴上。通过第二切削头的适合定位和在机加工中钻具相对于轴承壳轴线的倾斜,可以在轴承壳的端部处形成暴露的表面。通过暴露的区域,防止了在两个轴承壳的连接位置处的不精确导致连接位置处的局部表面的内边缘向内凸出。结果,轴的运转性能得到提高,并且轴承和轴的磨损得到减少。通过仅一个工具和仅一个钻穿步骤,便可以此方式实现优化的耐磨和提高的运转性能的两项措施。实现定向轮廓成形的单独的机加工步骤并不是必需的。其中存在两项措施的协同效果。
切削头优选地由调节装置在不同于旋转轴线的方向的调节方向上调节,而钻轴由旋转式驱动装置来旋转。当然,也可以构思出用于在轴承壳中形成结构化的槽轮廓的两个第一切削头中的仅一个可在调节方向上调节。
调节装置(在多个可调节的切削头的情况中为多个)优选地包括压电部件。由此,通过优选地布置在钻轴轴头处的压电部件连续地或在特定的频率下产生了调节的可能性。切削头在轴头中结构性地布置成使其优选地支撑在该压电部件上。通过压电部件的相应促动,该部件扩张,并因而在轴向方向上改变了切削头的位置。由于压电部件工作的短暂的反应时间和精确度,产生了适合于机加工过程的用于调节切削头的可能性。
根据本发明,该工具使得能够生产在轴向方向上成形的轴承壳,其中该轴承壳的滑动表面具有定向的凸状轮廓。
定向轮廓优选地在轴承壳的轴向方向上处于滑动表面的边缘区域。其中两个轴承壳相连以形成轴承的轴承壳的端部可与轴向方向上的边缘区域区分开。轴向方向上的轮廓成形从两个边缘延伸到轴承壳中的程度可以适应于具体的要求和负载。当然,也可以在暴露的区域中提供定向的轮廓成形。
滑动表面优选地在轴向方向上的边缘区域处弯曲,并且在它们之间为平坦的,滑动表面在边缘区域处凸出地弯曲;即,滑动表面或滑动表面和暴露的区域弯曲成远离轴承壳的中心(圆心)。备选地,轴承壳的滑动表面以及可选的暴露区域在轴向方向上在整个区域弯曲,在轴承壳的轴向方向上其曲率半径在边缘区域处为最大,并且滑动表面的弯曲为凸状的。在两种情况中,轴承壳中的在负载下运转的轴的最小弯曲或倾斜在弯曲的运转表面的简单制造的情况中至少部分地被补偿。
附图说明
图1显示了具有两个切削工具的钻轴,一个用于机加工暴露的区域而一个用于机加工轴承壳的滑动区域;
图2A显示了传统的、平坦的滑动表面轮廓;
图2B显示了弯曲的滑动表面轮廓;
图2C显示了在轴承壳的边缘区域处弯曲的滑动表面轮廓;
图3显示了具有在边缘区域处弯曲的滑动表面轮廓的轴承壳的透视图。
具体实施方式
上面参照图1所述的为用于机加工轴承壳的滑动表面的传统工具。在根据本发明的一个实施方案中,切削头21支撑在压电部件(图1中未示出)上。通过压电部件(在多个切削头的情况中为多个)的相应促动,该部件扩张并因此改变了切削头的轴向位置,也就是主要在关于钻轴20的径向方向上。
当使用能够调节的切削头时,可以产生例如如图2B、图2C和图3所示的轴承壳的轮廓。由于尤其是在边缘区域32处的弯曲,因在轴承壳中在负载下运行的轴的弯曲或倾斜对耐磨和运行性能的影响得到了缓解。需注意如下事实,即为了说明的目的,图2B、图2C和图3中的弯曲被极度地放大。
权利要求书(按照条约第19条的修改)
1.用于机加工轴承壳(30)的滑动表面的工具,包括用于驱动能够围绕旋转轴线旋转的钻轴(20)的旋转式驱动装置,以及安装于所述钻轴(20)上以通过所述钻轴(20)的旋转来切削所述轴承壳(30)到特定壁厚的至少一个第一切削头(21),
其中,所述第一切削头(21)能够通过调节装置在在所述钻轴(20)的径向方向上具有分量的调节方向上调节,同时所述钻轴(20)由旋转式驱动装置来旋转,
所述钻轴(20)包括至少一个第二切削头(22),所述第二切削头(22)设置用来形成暴露的区域,并且所述第二切削头(22)在所述工具的进给方向上处于所述第一切削头(21)之前。
2.根据权利要求1所述的工具,其特征在于,所述调节方向垂直于所述钻轴(20)的轴线。
3.根据权利要求1所述的工具,其特征在于,两个切削头(21,22)以180°彼此相反的方式安装于所述钻轴(20)上。
4.根据权利要求1到3中任一项所述的工具,其特征在于,两个切削头都能够通过调节装置在在所述钻轴(20)的径向方向上均具有分量的各自的调节方向上调节,同时所述钻轴(20)由旋转式驱动装置来旋转。
5.根据上述权利要求中任一项所述的工具,其特征在于,所述调节装置包括压电部件。
6.使用根据权利要求1到5中任一项所述的工具来机加工的轴承壳(30),其中,所述轴承壳(30)的滑动表面(31)包括沿着所述轴承壳的轴向方向上的定向的凸状轮廓以及暴露的区域。
7.根据权利要求6所述的轴承壳(30),其特征在于,所述定向的轮廓设置在所述轴承壳(30)的轴向方向上的滑动表面(31)的边缘区域(32)处。
8.根据权利要求6或7所述的轴承壳(30),其特征在于,所述轴承壳(30)在轴向方向上的边缘区域(32)处弯曲,并且在两个边缘区域之间为平坦的,所述滑动表面(31)在边缘区域(32)处凸状地弯曲。
9.根据权利要求6或7所述的轴承壳(30),其特征在于,所述轴承壳(30)的滑动表面(31)在轴向方向上在整个部位上弯曲,其中曲率半径在轴承壳(30)的轴向方向上在边缘区域(32)处最大,并且滑动表面(31)的弯曲是凸状的。
10.使用根据权利要求1到5中任一项所述的工具对轴承壳(30)进行机加工的方法,其中,第一切削头通过旋转所述钻轴(20)来切削所述轴承壳(30)至特定壁厚,
所述第一切削头在切削过程中在调节方向上被调节,以在所述轴承壳(30)的滑动表面(31)上产生定向的轮廓,以及
通过所述第二切削头形成暴露的区域。
11.根据权利要求10所述的方法,其特征在于,所述第一切削头的调节周期性地进行。
12.根据权利要求10或11所述的方法,其特征在于,调节进行为使得产生了根据权利要求6到9中任一项所述的成形的轴承壳(30)。
Claims (14)
1.用于机加工轴承壳(30)的滑动表面的工具,包括用于驱动能够围绕旋转轴线旋转的钻轴(20)的旋转式驱动装置,以及安装于所述钻轴(20)上以通过所述钻轴(20)的旋转来切削所述轴承壳(30)到特定壁厚的至少一个第一切削头(21),
其中,所述第一切削头(21)能够通过调节装置在在所述钻轴(20)的径向方向上具有分量的调节方向上调节,同时所述钻轴(20)由旋转式驱动装置来旋转。
2.根据权利要求1所述的工具,其特征在于,所述调节方向垂直于所述钻轴(20)的轴线。
3.根据权利要求1或2所述的工具,其特征在于,所述钻轴(20)包括至少一个第二切削头(22)。
4.根据权利要求3所述的工具,其特征在于,所述第二切削头(22)设置用来形成暴露的区域,所述第二切削头(22)在所述工具的进给方向上处于所述第一切削头(21)之前。
5.根据权利要求3或4所述的工具,其特征在于,两个切削头(21,22)以180°彼此相反的方式安装于所述钻轴(20)上。
6.根据权利要求3到5中任一项所述的工具,其特征在于,两个切削头都能够通过调节装置在在所述钻轴(20)的径向方向上均具有分量的各自的调节方向上调节,同时所述钻轴(20)由旋转式驱动装置来旋转。
7.根据上述权利要求中任一项所述的工具,其特征在于,所述调节装置包括压电部件。
8.使用根据权利要求1到7中任一项所述的工具来机加工的轴承壳(30),其中,所述轴承壳(30)的滑动表面(31)包括定向的凸状轮廓。
9.根据权利要求8所述的轴承壳(30),其特征在于,所述定向的轮廓设置在轴承壳(30)的轴向方向上的滑动表面(31)的边缘区域(32)处。
10.根据权利要求8或9所述的轴承壳(30),其特征在于,所述轴承壳(30)在轴向方向上的边缘区域(32)处弯曲,并且在两个边缘区域之间为平坦的,所述滑动表面(31)在边缘区域(32)处凸状地弯曲。
11.根据权利要求8或9所述的轴承壳(30),其特征在于,所述轴承壳(30)的滑动表面(31)在轴向方向上在整个部位上弯曲,其中曲率半径在轴承壳(30)的轴向方向上在边缘区域(32)处最大,并且滑动表面(31)的弯曲是凸状的。
12.使用根据权利要求1到7中任一项所述的工具对轴承壳(30)进行机加工的方法,其中第一切削头通过旋转所述钻轴(20)来切削所述轴承壳(30)至特定壁厚,其中,所述第一切削头在切削过程中在调节方向上被调节,以在所述轴承壳(30)的滑动表面(31)上产生定向的轮廓。
13.根据权利要求12所述的方法,其特征在于,所述第一切削头的调节周期性地进行。
14.根据权利要求12或13所述的方法,其特征在于,调节进行为使得产生了根据权利要求8到11中任一项所述的成形的轴承壳(30)。
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DE1020100316067 | 2010-07-21 | ||
DE102010031606A DE102010031606A1 (de) | 2010-07-21 | 2010-07-21 | Strukturierte Gleitfläche einer Lagerschale |
PCT/EP2011/055910 WO2012010334A1 (de) | 2010-07-21 | 2011-04-14 | Strukturierte gleitfläche einer lagerschale |
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US (1) | US9482275B2 (zh) |
EP (1) | EP2595772B1 (zh) |
JP (1) | JP5810376B2 (zh) |
KR (1) | KR101818276B1 (zh) |
CN (1) | CN103038007B (zh) |
BR (1) | BR112013001494A2 (zh) |
DE (1) | DE102010031606A1 (zh) |
MX (1) | MX2013000473A (zh) |
RU (1) | RU2013107550A (zh) |
WO (1) | WO2012010334A1 (zh) |
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DE102012221537B3 (de) | 2012-11-26 | 2014-01-23 | Federal-Mogul Wiesbaden Gmbh | Verfahren und Vorrichtung zur Herstellung eines Gleitlagers oder eines Teils davon sowie Gleitlager oder Teil davon |
EP2837837A1 (de) * | 2013-08-14 | 2015-02-18 | Carl Freudenberg KG | Führungsring und dessen Verwendung |
BR102014016685B1 (pt) * | 2014-07-04 | 2022-03-03 | Mahle Metal Leve S.A. | Bronzina e motor a combustão interna |
WO2017043931A1 (ko) * | 2015-09-10 | 2017-03-16 | 한국기계연구원 | 하이브리드 절삭장치 및 이를 이용한 그루브 절삭방법 |
DE102016215404A1 (de) | 2016-08-17 | 2018-02-22 | Mahle International Gmbh | Verfahren zum Herstellen einer Rillenstruktur in einer Innenoberfläche eines Kolbens |
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CN103038007B (zh) | 2016-03-30 |
US9482275B2 (en) | 2016-11-01 |
KR101818276B1 (ko) | 2018-01-12 |
JP5810376B2 (ja) | 2015-11-11 |
MX2013000473A (es) | 2013-02-11 |
US20130209012A1 (en) | 2013-08-15 |
JP2013535344A (ja) | 2013-09-12 |
RU2013107550A (ru) | 2014-08-27 |
KR20140002596A (ko) | 2014-01-08 |
WO2012010334A1 (de) | 2012-01-26 |
BR112013001494A2 (pt) | 2016-05-31 |
DE102010031606A1 (de) | 2012-01-26 |
EP2595772B1 (de) | 2014-10-15 |
EP2595772A1 (de) | 2013-05-29 |
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