CN117006164A - 传感轴承单元和改善破坏扭矩的相关联的制造方法 - Google Patents
传感轴承单元和改善破坏扭矩的相关联的制造方法 Download PDFInfo
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- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
- G01D5/147—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the movement of a third element, the position of Hall device and the source of magnetic field being fixed in respect to each other
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- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/443—Devices characterised by the use of electric or magnetic means for measuring angular speed mounted in bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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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
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Abstract
一种传感轴承单元和改善破坏扭矩的相关联的制造方法。一种传感轴承单元(10),包含轴承(12)和脉冲圈(14)。所述轴承(12)设置有同以轴线(X‑X’)为中心的第一圈(16)和第二圈(18)。所述脉冲圈(14)设置有靶标支架(30)、装配在靶标支架(30)上的靶标(32)和被紧固在轴承的第一圈(16)上的套筒(34)。所述套筒(34)设置有轴向部(34a)和至少在径向上延伸的领圈(34b)。所述靶标支架(30)在径向上围绕套筒(34)的轴向部(34a)被装配,在轴向上被装配在轴承的第一圈(16)与套筒(34)的领圈(34b)之间。所述套筒(34)的轴向部(34a)包含至少一处径向突起(40),所述至少一处径向突起(40)伸入设置在靶标支架(30)上的互补凹陷(38)中。
Description
技术领域
本发明涉及一种包含轴承和脉冲圈的传感轴承单元(sensor bearing unit)。
背景技术
现如今,传感轴承单元被普遍应用于广泛的技术领域,例如,汽车行业和航空技术。这些单元提供高质量的信号和传输,同时允许被集成在简单且紧凑的装置中。
这种传感轴承单元通常包含轴承、脉冲圈和面对脉冲圈的检测装置。例如,所述脉冲圈设置有靶标支架(/靶保持件)(target holder)和在轴承的外圈之外(beyond)固定在靶标支架上的磁性靶标(/磁化靶)(magnetized target)。
磁性靶标(magnetic target)包含交替设置的南北极,南北极的数量取决于轴承的尺寸、检测的精度和具体的应用。检测装置可以被固定在轴承外圈或者固定壳体(fixedcasing)上。磁性靶标附着(/附接)在靶标支架外侧的圆筒部上。
在一种类型的脉冲圈中,所述脉冲圈设置有用于支撑靶标支架且被紧固在轴承内圈上的固定套筒(以下简称“套筒”)。所述套筒包含环形的轴向部和在径向上从所述轴向部向外延伸的径向领圈(radial collar)。靶标支架在轴向上被装配在轴承的内圈与套筒的径向领圈之间。更多的细节,例如,可以参见专利US 10,132,359。
套筒的轴向部被紧固在轴承内圈的环形槽中,用于阻止脉冲圈相对于轴承内圈旋转。
脉冲圈在旋转过程中固定连接其所附着的轴承圈是至关重要的。
然而,当下的设计在靶标支架与套筒之间具有对于某些应用来说太低的破坏扭矩(/制动扭矩)(breaking torque)。
在专利US 10,132,359中,脉冲圈的内孔具有多个齿。当套筒被轴向适配(/嵌配)(fitted)在轴承内圈的内孔中时,这些齿引发套筒的局部变形,从而形成阻转机制(means)。
然而,这导致对套筒的轻度变形冲击和靶标支架与套筒之间的低同步连接(/低角度连接/低的在角度上连接)(low angular connection)。
发明内容
本发明的一个目的在于提供一种在靶标支架与套筒之间具有改善的同步连接(/角度连接/在角度上)的传感轴承单元。
本发明涉及一种传感轴承单元,包含轴承和脉冲圈。所述轴承设置有同以轴线为中心的第一轴承圈和第二轴承圈;所述脉冲圈设置有靶标支架(/靶保持件)(targetholder)、装配在靶标支架上的靶标(/靶)(target)、以及紧固在第一轴承圈上的设置有轴向部和至少在径向上延伸的领圈(/轴环)(collar)的套筒。
靶标支架在径向上围绕套筒的轴向部被装配(/安装)(mounted),在轴向上被装配在第一轴承圈与套筒的领圈之间。
根据一项一般特征,套筒的轴向部包含至少一处(/至少一个)径向突起,突入设置在靶标支架上的形状与之互补的凹陷(以下简称“互补凹陷”)中。
所述套筒伸入形成于靶标支架上的互补凹陷中的所述至少一处径向突起阻止套筒与靶标支架之间发生相对转动。
在优选情况下,互补凹陷形成在靶标支架的内孔上。
有利的是,套筒的轴向部包含在圆周方向上(/在周向上)间隔开的多处(/多个)径向突起,每一处径向突起都伸入一处相应的互补凹陷中。每一处径向突起与其相应的互补凹陷之间的配合都通过阻止两者之间的相对转动进一步改善靶标支架与套筒之间的角度连接(/在角度上的连接/同步连接)(angular connection)。
在优选情况下,径向突起在圆周方向上以规则的方式间隔分开(/均等地间隔开)(regularly spaced)。
在一种实施方式中,所述至少一处径向突起与套筒的轴向部形成为一体。作为另外一种选择,所述至少一处径向突起也可以由一个并非是所述套筒的独立构件制成,该独立构件被固定在套筒的轴向部上。
在优选情况下,所述径向突起由套筒的轴向部通过径向塑性变形形成。
在另外一种实施方式中,套筒在径向上抵靠第一轴承圈上形成有多处轴向槽的圆柱形表面。所述轴向槽增加第一轴承圈与套筒之间的摩擦系数,从而降低两者之间的表面滑动。
本发明还涉及制造如前面限定的传感轴承单元的方法。在该方法中,所述至少一处径向突起形成在塑性变形步骤中。在所述的塑性变形步骤中,套筒的环形轴向部被局部在径向上压向靶标支架,以便通过塑性变形进入设置在靶标支架上的相应的互补凹陷(complementary recess)中。
在一种实施方式中,所述套筒尤其通过压配合(/压配)(press-fitting)被紧固在第一轴承圈上。
在另外一种实施方式中,所述方法进一步包含,在将套筒紧固在第一轴承圈之前,在第一轴承圈上有待套筒径向抵靠的圆柱形表面上形成多处(/多个)轴向槽。
附图说明
以下通过非限制性示例和附图示意给出本发明的具体实施方式。通过研究这些具体实施方式的详细说明,本发明及其优点将会被更好的理解。其中
图1为本发明的一个实施例在塑性变形步骤以前其传感轴承单元的轴向截面图;
图2为图1的细节放大图;
图3为图1所示传感轴承单元的脉冲圈的靶标支架的透视图(/立体图);
图4为图3中所示靶标支架的内孔的细节放大图;
图5为图1所示传感轴承单元在塑性变形步骤以后的轴向截面图;
图6为图5的细节放大图;
图7为套筒在变形以后的细节放大图。
具体实施方式
图1所示的传感轴承单元10适于装备在诸如电机(/马达)(motor)、制动系统(brake system)、悬挂系统或者任何其他旋转机器之类的装置上,尤其用于机动车辆(/机动交通工具)(automotive vehicle)。
传感轴承单元10包含轴承12和装配(/安装)(mounted)在轴承12上的脉冲圈14。
轴承12包含第一圈16和第二圈18。在图示的实施例中,第一圈16为内圈,第二圈18为外圈。内、外圈16和18同心设置,在轴向上沿轴向走势的轴承旋转轴线X-X’延伸。内、外圈16和18由钢制成。
在图示的实施例中,轴承12还包含一列滚动体20,此处以球的形式提供,介于形成在内、外圈16和18上的滚道(未标注)之间。滚动轴承12还包含用于保持滚动体20规则(/均等)(regular)周向间隔的保持架22。
内圈16意图被用于装配在所述装置的转轴(简称“装置轴”)上,用于跟踪装置轴的旋转。内圈16被意图用于旋转,而外圈18则意图用于被固定。外圈18可被装配在固定的支撑构件或者壳体上,隶属于所述的装置。
内圈16包含圆柱形的内表面(或称“内孔”)16a和在径向上与所述内孔16a相对的外侧圆柱形表面16b。滚动体20的环形(/圆环形)(toroidal)圆周滚道由外侧圆柱形表面16b形成,所述滚道面向径向外侧。
内圈16还包含两个对设的径向侧表面16c、16d,这两个侧表面16c、16d在轴向上限定该轴承圈的内孔16a和外表面16b。
内圈16进一步包含形成在内孔16a中的圆柱形槽16e。槽16e以轴线X-X’为中心。内孔16a的直径小于槽16e的直径。槽16e开口于径向侧表面16d。
脉冲圈14被装配在内圈16上。脉冲圈14包含环形(annular)的靶标支架30、装配在靶标支架30上的靶标32、以及紧固在内圈16上的固定套筒34。
如图2更为清楚地显示,靶标支架30通过套筒34在轴向上被紧固在轴承内圈16上。靶标支架30在轴向上被装配在轴承内圈的侧表面16d与套筒34之间。靶标支架30在径向上围绕套筒34被装配。靶标支架30在轴向上介于并且被夹持(clamped)在内圈侧表面16d与套筒34之间。靶标支架30在轴向上一侧接触内圈的侧表面16d,另外一侧接触套筒34。
靶标支架30包含限定其内孔30c的环形径向部30a和在径向上围绕轴承12的外侧环形轴向部(亦简称“外侧轴向部”)30b。所述外侧轴向部30b的位置在径向上高于轴承的外圈18。外侧轴向部30b在径向上延伸出径向部30a的大尺寸边缘(/大直径边缘)(large-diameter edge)。
靶标支架30的径向部分30a在轴向上介于并且被夹持在轴承内圈的侧表面16d与套筒34之间。在图示的实施例中,靶标支架的径向部30a设置有截头圆锥部,该截头圆锥部相对于轴线X-X’向轴承12的相反方向倾斜。截头圆锥部防止靶标支架30与轴承外圈18之间发生任何干涉。
靶标32被装配在靶标支架的外侧轴向部30b上。在所披露的实施例中,靶标32被装配在外侧轴向部30b的内孔中。作为另外一种选择,靶标32也可以被装配在外侧轴向部30b的外表面上。
在一种实施方式中,靶标32包含交替设置的磁性南、北极。靶标32在圆周方向上被多极磁化。靶标32可以是塑料模制部件。靶标32可以被嵌件注塑(/包覆成型)(overmolded)在靶标支架30上。作为另外一种选择,靶标32也可以被独立制成,然后通过任何适宜的方式,例如,粘结或者压配,被紧固在靶标支架30上。靶标32可以由具有磁性粉末的橡胶材料、由磁性合金、由塑性铁素体(plasto-ferrite)、或者由弹性铁素体(elasto-ferrite)制成。
检测装置(未显示)与靶标32相关联,用于追踪脉冲圈14和内圈16围绕轴线X-X’的旋转。检测装置被设置为在径向上面对靶标32的内表面。例如,检测装置可以包含霍尔效应传感器。靶标32是一种径向靶标。作为另外一种选择,所述靶标也可以是一种轴向靶标。
作为另外一种选择,靶标32及其检测装置也可以使用其他适宜的技术,而非磁性技术。例如,可以使用感应技术或者光学技术。
如后文将要描述,靶标支架30还包含形成于内孔30c中的凹陷38,用以阻止靶标支架30相对于套筒34发生角度移动(angular movement)。
在所披露的实施例中,靶标支架30被制造为一体。靶标支架30可以由金属或者塑料制成,通过冲压或者任何其他适宜的工艺形成。
套筒34在轴向上被紧固在内圈16上。套筒34被装配在轴承内圈的内孔16a中。套筒34被紧固在内孔16a中。更准确地讲,套筒34被装配和紧固在内孔16a的槽16e中。例如,套筒34可以通过轴向压配合(/压配)被紧固在内圈16的内孔16a中。
如前文所述,套筒34在轴向上被紧固在内圈16上。套筒34也可以被同步紧固在内圈16上,用于在旋转过程中束缚所述的套筒和内圈16。在这种情况下,套筒34可以通过卡扣配合、粘合、焊接、径向压合(/径向收边/径向卷边)(radial crimping)或者任何其他的适宜方式被紧固在内孔16a中。
套筒34包含限定其内孔的环形轴向部34a和在径向上从所述轴向部34a延伸的外侧径向部(或称“领圈”)34b。领圈34b在径向上从轴向部34a向外延伸。领圈34b从轴向部34a的一个轴向端延伸。在图示的实施例中,领圈34纯粹在径向上延伸。作为另外一种选择,领圈34也可以倾斜延伸,即同时在径向和轴向上延伸。在所披露的实施例中,套筒34被制成为一体。套筒34可以由金属或者塑料制成,通过冲压或者任何其他适宜的工艺形成。
靶标支架30在径向上围绕套筒的轴向部34a被装配。靶标支架的径向部30a在径向上围绕套筒的轴向部34a被装配。在套筒发生径向变形(该步骤将于后文描述)以前,靶标支架30的内孔30c与套筒的轴向部34a之间存在环形的径向间隙36。套筒的轴向部34a被紧固在轴承的内圈16上。轴向部34a被装配和紧固在轴承内圈的内孔16a中。更准确地讲,套筒的轴向部34a被装配和紧固在内孔16a的槽16e中。
靶标支架30在轴向上介于并且被夹持在内圈16的侧表面16d与套筒34的径向领圈34b之间。径向领圈34b在轴向上抵靠靶标支架的径向部30a。
如前文所述,凹陷38形成在靶标的内孔30c中。凹陷38在径向上从靶标的内孔30c向外延伸。每一处凹陷38在径向上都面朝套筒的轴向部34a。每一处凹陷38在径向上都面朝轴向部34a的外径表面。凹陷38,优选以规则的方式,在圆周方向上彼此间隔开。每一处凹陷38都在圆周方向上跨过有限的角度扇区(angular sector)。
如图5~7所示,在套筒发生径向变形以后,套筒的轴向部34a包含多处径向隆起或突起40,每一处突起40都在径向上伸入靶标支架的一处凹陷38中,并且具有与所述一处凹陷38互补的形状。突起40在径向上从套筒的轴向部34a向外突伸。突起40从轴向部34a的外表面向外突伸。突起40在径向上向外突伸,并且在轴向上沿套筒的轴向部34a延伸。
靶标支架30相对于套筒34的任何旋转均被抑制。
在图示的实施例中,靶标支架30和套筒轴向部34a分别包含多处凹陷38和多处突起40。作为另外一种选择,靶标支架30和套筒轴向部34a也可以仅包含一处凹陷38和一处突起40。
为形成突起40,本发明提供套筒轴向部34a的塑性变形步骤。
在该步骤中,套筒轴向部34a向靶标支架的内孔30c发生局部径向变形,以便通过塑性变形进入凹陷38。
通过塑性变形,套筒34局部面向凹陷38穿过径向间隙36,从而形成突起40。所述径向变形由具有与所述一处凹陷38互补形状的具体工具通过径向压合或者冲压予以实现。所述变形步骤的结果被显示在图5和图6中。
在优选情况下,套筒轴向部34a的变形是在其装配在内圈的内孔中以后予以实施的。作为另外一种选择,也可以预见,轴向部34a的变形是在套筒被装配在内圈的内孔中以后予以实施的。
此外,为改善套筒的轴向部34a与内圈16之间的同步连接(/角度连接/在角度上连接)(angular connection),内孔16a可以设置沿内孔的圆柱形槽16e在轴向上延伸的多处轴向槽。这种轴向槽是通过滚花(knurling)形成的。
在图示的实施例中,传感轴承单元设置有包含一列滚动体的滚动轴承。作为另外一种选择,所述滚动轴承也可以包含至少两列滚动体。在图示的实施例中,滚动体为球。作为另外一种选择,滚动轴承也可以包含其他类型的滚动体,例如,滚子。在另外一种变化例中,传感轴承单元也可以设有不包含滚动体的滑动轴承。
此外,如前文所述,在这些图示的实施例中,滚动轴承的第一圈为内圈,第二圈为外圈。作为另外一种选择,也可以提供相反的设置,即以第一圈为外圈,第二圈为内圈。在这种情况下,靶标支架则被紧固在外圈上。
Claims (10)
1.传感轴承单元(10),包含:
-轴承(12),所述轴承(12)设置有同以轴线(X-X’)为中心的第一圈(16)和第二圈(18);和
-脉冲圈(14),所述脉冲圈(14)设置有靶标支架(30)、装配在靶标支架(30)上的靶标(32)和被紧固在轴承的第一圈(16)上的套筒(34),所述套筒(34)设置有轴向部(34a)和至少在径向上延伸的领圈(34b),所述靶标支架(30)在径向上围绕套筒(34)的轴向部(34a)被装配,在轴向上被装配在轴承的第一圈(16)与套筒(34)的领圈(34b)之间;
其特征在于:所述套筒(34)的轴向部(34a)包含至少一处径向突起(40),所述至少一处径向突起(40)伸入设置在靶标支架(30)上的互补凹陷(38)中。
2.根据权利要求1所述的传感轴承单元(10),其特征在于:所述互补凹陷(38)被设置在靶标支架(30)的内孔(30c)上。
3.根据权利要求1或2所述的传感轴承单元(10),其特征在于:所述套筒(34)的轴向部(34a)包含多处在圆周方向上间隔开的径向突起(40),每一处径向突起(40)都伸入一处相关联的互补凹陷(38)中。
4.根据权利要求3所述的传感轴承单元(10),其特征在于:所述径向突起(40)在圆周方向上均等地间隔开。
5.根据前述权利要求中任意一项所述的传感轴承单元(10),其特征在于:所述至少一处径向突起(40)与套筒的轴向部(34a)形成为一体。
6.根据前述权利要求中任意一项所述的传感轴承单元(10),其特征在于:所述径向突起(40)由套筒的轴向部(34a)通过径向塑性变形形成。
7.根据前述权利要求中任意一项所述的传感轴承单元(10),其特征在于:所述套筒(34)在径向上抵靠第一圈(16)上形成有多处轴向槽的圆柱形表面。
8.用于制造前述权利要求中任意一项所述传感轴承单元(10)的方法,其特征在于:所述至少一处径向突起(40)是在塑性变形步骤中形成的,在该塑性变形步骤中,套筒(34)的环形轴向部(34a)在径向上被局部压向靶标支架(30),以便通过塑性变形进入设置在靶标支架(30)上的对应的互补凹陷(38)中。
9.根据权利要求8所述的方法,其特征在于:所述套筒(34)被紧固在第一圈(16)上,尤其通过压配的方式。
10.根据权利要求9所述的方法,其特征在于,还包含:在将套筒(34)紧固在第一圈(16)上以前,在第一圈(16)的有待套筒(34)径向抵靠的圆柱形表面上形成多处轴向槽。
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