END CAP-TYPE BALL SCREW ASSEMBLY AND CIRCULATOR

摘要

A circulator comprises a circulating body and an extending rib. The circulating body is formed with an arc-shaped circulating passage. The extending rib is integrally radial inwardly extended from a curved portion of the circulating body. The curved portion of the circulating body is configured toward an inner direction of the circulating passage by reinforcement of the extending rib to increase a radius of the circulating passage. Moreover, the instant disclosure further provides an end cap-type ball screw assembly.

主权项

1. An end cap-type ball screw assembly, comprising:
a screw shaft having a spiral rolling groove formed on an outer surface thereof; a nut having a spiral load rolling groove formed on an inner surface thereof, the screw shaft coupled through the nut, the rolling groove aligned with the load rolling groove, and the rolling groove and the load rolling groove jointly defining a raceway; a plurality of balls disposed between the rolling groove of the screw shaft and the load rolling groove of the nut; and two circulators respectively arranged on two opposite sides of the nut, each circulator having an arc-shaped circulating passage, one end of each circulating passage tangent to and in air communication with the raceway, and the balls circulating in the raceway by the circulating passages; wherein each circulator comprises:
a circulating body defining the circulating passage and including a curved portion having a radius; andan extending rib integrally and radially formed to inwardly extend from the curved portion of the circulating body;wherein the extending rib is formed to increase the radius of the circulating body.