| 主权项 |
1. A motion transmission module with a cooling device comprising:
a screw formed with an outer helical groove; a nut including a body, a penetrating hole penetrating through the body and provided for insertion of the screw, an inner helical groove formed in an inner surface of the hole to define a load path by cooperating with the outer helical groove, a flat surface formed on an outer surface of the body, and two through holes defined in the flat surface and in communication with the inner helical grooves; a return member including two legs inserted in the two through holes and a return path running through the two legs; a plurality of rolling elements movably received in the load path and the return path; and a cooling device fixed on the body of the nut and having a mounting surface to be abutted against the flat surface, a cooling circulation system, and a positioning groove formed in the mounting surface, at a front end of the cooling circulation system being formed an inlet which is located on a peripheral surface of the cooling device, and at a rear end of the cooling circulation system being formed an outlet which is located on a peripheral surface of the cooling device, the positioning groove being formed with a bottom to be abutted against the return member; wherein the cooling circulation system is formed by machining process, the cooling circulation system includes a plurality of transverse passages, and longitudinal passages, the inlet is located in a last one of the transverse passages, and the outlet is located in a first one of the transverse passages; the transverse passages, the longitudinal passages, the outlet and the inlet are in communication with one another to form a single route, and then the transverse and longitudinal passages are sealed with sealing members to prevent leakage of cooling liquid, so as to form the cooling circulation system with the inlet and outlet. |
