ROTARY DRIVING MECHANISM AND HOLDING DEVICE USING THE SAME

摘要

A rotary driving mechanism includes a support stand, an air feeding assembly, and a driver. The air feeding assembly includes a bearing base, a rotating member, two first ventilating joints, and two second ventilating joints. The bearing base is coupled to the support stand and defines an inner circular surface. The rotating member is rotatably received in the bearing base and resists the inner circular surface. The rotating member defines two circular grooves at an outer periphery thereof and two channels therein. Each circular groove is in fluid communication with one of the channels. The first ventilating joints are coupled to the bearing base and respectively in fluid communication with the circular grooves. The second ventilating joints are coupled to the rotating member and respectively in communication with the channels. The driver is coupled to the rotating member and in communication with the second ventilating joints.

主权项

1. A holding device configured to hold and rotate a workpiece, the holding device comprising:
a support stand; an air feeding assembly comprising:
a bearing base coupled to the support stand and defining an inner circular surface,a rotating member rotatably received in the bearing base in resistance with the inner circular surface, the rotating member having two circular grooves at an outer periphery thereof and two channels defined therein, each circular groove being in fluid communication with at least one of the channels,two first ventilating joints coupled to the bearing base and respectively in fluid communication with the circular grooves, andtwo second ventilating joints coupled to the rotating member and respectively in fluid communication with the channels; and a holding assembly comprising:
a driver coupled to the rotating member and communicating with the second ventilating joints, anda holding member coupled to the driver; wherein the driver is configured to drive the holding member to move, and the rotating member is configured to rotate the holding member.