US 7,455,570 B2
Large part polishing apparatus and polishing method
Satoru Yanaka, Yokosuka (Japan); Satoru Asai, Yokohama (Japan); Ryusuke Tsuboi, Yokohama (Japan); Kenji Kamimura, Yokohama (Japan); Tadashi Tanuma, Yokohama (Japan); and Masataka Kikuchi, Chigasaki (Japan)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan)
Filed on Dec. 22, 2005, as Appl. No. 11/313,696.
Application 11/313696 is a continuation of application No. PCT/JP2004/006161, filed on Apr. 28, 2004.
Prior Publication US 2006/0111025 A1, May 25, 2006
Int. Cl. B24B 1/00 (2006.01)
U.S. Cl. 451—38  [451/75] 2 Claims
OG exemplary drawing
 
2. A large part polishing apparatus for projecting an abrasive particle having an elastic material as a core at a predetermined speed as an abrasive, and polishing by colliding the abrasive particle against a surface to be polished of a large part, the apparatus comprising:
a recovery tank table on which the large part is adapted to be mounted and which recovers the abrasive particle;
a turntable on which the recovery tank table is mounted and rotatably supported while holding the recovery tank table and the large part at a predetermined position and driven by a driving motor;
an abrasive feeding unit which feeds the abrasive particle to a predetermined position;
a polishing apparatus main body which comprises a polishing head including at least an impeller which is driven by an impeller driving motor and applies rotary energy to the abrasive particle to be supplied from the abrasive feeding unit, the polishing head injecting the abrasive particle from the tangential direction of the impeller toward a surface to be polished of the large part held on the recovery tank table; and
an abrasive recovery unit which recovers the abrasive particle injected to the surface to be polished of the large part by the polishing apparatus main body, said abrasive recovery unit comprising the recovery tank table and a conveyer arranged to convey recovered abrasive particle to a predetermined height, and a flexible tube coupled to the conveyer and arranged to feed the recovered abrasive particle into the abrasive feeding unit;
wherein the turntable is supported in a horizontal state, and rotated and driven by the driving motor, and the polishing apparatus main body comprises plural polishing heads disposed at different position, and an injection mechanism housing unit which guides the polishing heads to the top of the turntable.