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    • 3. 发明公开
    • Sleeve with interior spline broaching system
    • Hülsemit Keilnaben-Innenräumsystem
    • EP2824343A2
    • 2015-01-14
    • EP14176037.1
    • 2014-07-07
    • BorgWarner Inc.
    • Larson, Craig S.
    • F16D1/072F16D1/10
    • F16D1/027F16D1/072F16D1/10F16D2001/103Y10T29/49826Y10T403/4966
    • A metallic sleeve (20) may be pressed with relatively low axial forces onto a softer metallic shaft (12) to produce a permanent interference fit between the sleeve and the shaft even if subject to high torque loads. For this purpose, the sleeve incorporates a plurality of successively reduced diameter, axially spaced, arrays (52, 54, 56) of splines (50) within its interior, with a series of spaced circumferentially extending grooves (30, 32, 34) situated between the arrays. The arrays of splines define angled frontal cutting edges (60, 62, 64) adapted to cut into the metal shaft for rigid securement of sleeve to shaft. The spaced grooves are adapted to collect chip debris (36, 38, 40) during installation of the sleeve to the shaft, each groove providing a volumetric space to provide for the uniform distribution of chip debris within the interface of sleeve and shaft. The sleeve to shaft securement structure can minimize part distortion, particularly when critical external geometry of the sleeve is to be maintained.
    • 金属套筒(20)可以以相对低的轴向力被压在较软的金属轴(12)上,以便即使经受高扭矩负载也能在套筒和轴之间产生永久的过盈配合。 为此,套筒在其内部包括多个连续减小直径的轴向间隔开的花键(50)的阵列(52,54,56),其中一系列间隔开的周向延伸的凹槽(30,32,34)位于 在阵列之间。 花键阵列限定适合于切入金属轴的成角度的正面切割边缘(60,62,64),用于将套筒刚性固定到轴上。 间隔开的凹槽适于在将套管安装到轴时收集碎屑(36,38,40),每个凹槽提供体积空间以提供在套筒和轴的界面内均匀分布的碎屑。 套筒与轴固定结构可以最小化零件的变形,特别是当要保持套筒的关键外部几何形状时。