公开(公告)号：US4541738A

公开(公告)日：1985-09-17

申请号：US522096

申请日：1983-08-11

申请人： Robert L. Leibensperger ,  Karl W. Reed

发明人： Robert L. Leibensperger ,  Karl W. Reed

IPC分类号： F16C19/36 ,  F16C33/46 ,  F16C33/66 ,  F16C37/00

CPC分类号： F16C19/364 ,  F16C33/4617 ,  F16C33/6659 ,  F16C33/6681 ,  F16C37/007 ,  Y10S384/90

摘要： A bearing assembly for supporting the spindle of a machine tool includes a single row tapered roller bearing and a closure at each end of the bearing for isolating the interior of the bearing from the surrounding atmosphere. A liquid refrigerant and lubricating oil are mixed in the closure at the small ends of the rollers, and are directed into the space between the tapered raceways. This refrigerant, upon encountering the tapered rollers, the raceways along which the rollers roll, and the thrust rib against which the large ends of the rollers bear, vaporizes and extracts heat from those bearing components, thereby enabling the bearing to operate at a generally uniform temperature close to room temperature. The vaporized refrigerant flows through a port in the closure at the large ends of the rollers and then into a heat exchanger where it is condensed, the liquid refrigerant being then directed to the closure at the small ends of the rollers. The lubricating oil is likewise recirculated from the closure at the large roller ends to the closure at the small roller ends where it is again mixed with the refrigerant. The refrigerant and oil may be mixed in an inwardly opening trough carried by the cage beyond the small roller ends and may be directed through channels in the cage bridges to the outer raceway and the thrust rib.

摘要翻译： 用于支撑机床的主轴的轴承组件包括单列圆锥滚子轴承和在轴承的每个端部处的封闭件，用于将轴承的内部与周围的大气隔离。 液体制冷剂和润滑油在辊的小端部在封闭件中混合，并被引导到锥形滚道之间的空间中。 这种制冷剂在遇到圆锥滚子时，滚子沿其滚动的滚道以及滚子的大端承受的推力肋从这些轴承部件蒸发并提取热量，从而使轴承能够以大致均匀的方式运行 温度接近室温。 蒸发的制冷剂在辊的大端部处流过封闭件中的端口，然后流入其中被冷凝的热交换器，然后液体制冷剂在辊的小端处被引导到封闭件。 润滑油同样在大辊端处的封闭件再循环到小辊端处的封闭件，在该小辊端再次与制冷剂混合。 制冷剂和油可以在由保持架承载的向内开口的槽中混合超过小的辊端，并且可以被引导通过笼桥中的通道到外滚道和推力肋。