CROSS ROLLING SHAFT ASSEMBLY AND CRADLE HEAD USING SAME

摘要

A rotating shaft assembly (40) and a cradle head (100) using the rotating shaft assembly (40). The rotating shaft assembly (40) comprises: a first supporting arm (41); a second supporting arm (42) disposed symmetrical to the first supporting arm (41); a connecting arm (43) connecting the first supporting arm (41) to the second supporting arm (42); and a first driving apparatus (44). A first bearing hole (410) is formed in the first supporting arm (41). A connecting seat (42a) is disposed at one end of the second supporting arm (42) away from the connecting arm (43). A second bearing hole (420) and an accommodating groove (421) are formed in the connecting seat (42a). The second bearing hole (420) is in communicated with the accommodating groove (421). The first driving apparatus (44) comprises a rotor assembly (441) and a stator assembly (442). The first supporting arm (41), the connecting arm (43) and the second supporting arm (42) are integrally formed. The rotor assembly (441) is directly accommodated in the accommodating groove (421).