CPC H01J 37/32532 (2013.01) [H01J 37/32642 (2013.01)] | 20 Claims |
1. A fastening apparatus, comprising:
a ring;
a plurality of fastening modules movably secured to the ring, wherein each fastening module is movable in a radial direction on the ring; and
a plurality of guide members installed on the ring, wherein each guide member guides movement of a respective one of the plurality of fastening modules;
wherein each one of the plurality of fastening modules comprises a first frame that is movable in the radial direction, a driving source installed below the first frame, a driving shaft that transmits a driving force from the driving source, a power transmission unit connected to the driving shaft, and a fastening bit connected to the power transmission unit that rotates; and
wherein the plurality of fastening modules operate simultaneously to install an upper electrode of an etching facility in the etching facility.
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