A multi-axis turntable includes a base, a rocker arm and a first driving device capable of driving the rocker arm to rock around the first rotation axis on the base. A swing arm and a second driving device, which is capable of driving the swing arm to swing around the second rotation axis on the rocker arm, are provided on the rocker arm. A workbench and a third driving device for driving the workbench to rotate around the third rotation axis are provided on the swing arm. The second rotation axis and the third rotation axis are parallel to each other or on different planes. Compared with the existing double rotating shaft turntable, the multi-axis turntable of the present invention has a cutting tool system of good and stable rigidity.

The present invention discloses an MDOF (multi-degree-of-freedom) micro-lubrication intelligent spray head system for a CNC milling machine, comprising an annular rotating platform, a longitudinal telescopic part, a rotating part, an intelligent spray head mounting platform and an information acquisition system. The annular rotating platform comprises a rotating piece which rotates along a horizontal circumferential direction; a bottom of the rotating piece is connected with at least one longitudinal telescopic part; a lower end of the longitudinal telescopic part is connected with the rotating part; the rotating part rotates within a set angle range by taking a point connected with the longitudinal telescopic part as an axis; the intelligent spray head mounting platform is connected with the rotating part and moves along with the rotating part; and the information acquisition system is mounted on the intelligent spray head mounting platform.

A carriage assembly includes a housing having first and second pieces each defining a recess that has a bearing surface with raised dimples. The first and second pieces are assembled to each other such that the recesses are aligned to form a cylindrical hole. A bushing is received in the hole and has an outer surface disposed against the dimples of the first and second pieces. The dimples are deformed during assembly to secure and locate the bushing within the cylindrical hole.

A carriage assembly includes a housing having first and second pieces each defining a recess that has a bearing surface with raised dimples. The first and second pieces are assembled to each other such that the recesses are aligned to form a cylindrical hole. A bushing is received in the hole and has an outer surface disposed against the dimples of the first and second pieces. The dimples are deformed during assembly to secure and locate the bushing within the cylindrical hole.