Automatic screw tightening module and robot manipulator employing same

A robot manipulator, comprising:

• an articulated arm comprising an axle end;
• and
• an automatic screw tightening module detachably coupled to the axle end of the articulated arm, and comprising:
• a plate assembly comprising a base plate and a rail, wherein the base plate has a recess disposed on an inner surface thereof, the rail is securely mounted on a bottom surface of the recess;
• an input module comprising an input terminal;
• a screwdriver module comprising a screwdriver and a screwdriver sleeve, wherein the screwdriver is securely coupled with the screwdriver sleeve;
• a transmission module connected with the input terminal and the screwdriver sleeve for allowing the input terminal, the transmission module and the screwdriver sleeve to be rotated synchronously;
• a movable module movably disposed on the base plate, wherein the movable module comprises a bearing, and portion of the screwdriver sleeve is accommodated in the bearing, so that the screwdriver module and the movable module are coupled with each other and moved relative to the base plate, and the movable module further comprises:
• a sliding carrier movably coupled with the rail;
• and
• a connection bracket securely mounted on a surface of the sliding carrier, and moving along the rail together with the sliding carrier, wherein the connection bracket comprises the bearing, a first extension portion and a second extension portion, and the first extension portion and the second extension portion are arranged at two opposite sides of the bearing;
• an elastic element disposed on the base plate, and connected with the movable module;
• and
• a position sensor disposed on the base plate for sensing a displacement of the movable module.