Abstract: Provided is an apparatus for machining a double enveloping worm shaft, and more particularly, to an apparatus for machining a double enveloping worm shaft, which cuts threads on a workpiece having a double enveloping body having a central portion formed therein in a concave arc-shaped outer circumferential surface and in which teeth of the machined double enveloping worm shaft are cut to a uniform depth while being always directed toward a central axis of a worm wheel, machining precision of the double enveloping worm shaft is increased, and thus post-machining is not required.

Abstract: Provided is a pan-tilt apparatus for a surveillance camera, including an image capturing unit 100 including a camera 2 and a camera holder 4 for supporting the camera 2; a motion converter 150 including a driving shaft 10, a shaft 20 connected to a connector 14 inserted into the driving shaft 10, a base member 30 inserted into one side of the driving shaft 10 and of which both ends are inserted in the shaft 20 by including a bearing 24, a bearing 32 installed in a lower portion of the base member 30 to smoothen an operation of the base member 30, and first and second worms 50 and 52 inserted into the base member 30 and mutually connected with first and second worm gears 40 and 42 to rotate; and a driving unit 250 including first and second motors 80 and 82 being connected to first and second motor shafts 60 and 62 to be inserted into the first and second worm gears 40 and 42.

Abstract: Provided is a pan-tilt apparatus for a surveillance camera, including an image capturing unit 100 including a camera 2 and a camera holder 4 for supporting the camera 2; a motion converter 150 including a driving shaft 10, a shaft 20 connected to a connector 14 inserted into the driving shaft 10, a base member 30 inserted into one side of the driving shaft 10 and of which both ends are inserted in the shaft 20 by including a bearing 24, a bearing 32 installed in a lower portion of the base member 30 to smoothen an operation of the base member 30, and first and second worms 50 and 52 inserted into the base member 30 and mutually connected with first and second worm gears 40 and 42 to rotate; and a driving unit 250 including first and second motors 80 and 82 being connected to first and second motor shafts 60 and 62 to be inserted into the first and second worm gears 40 and 42.