| 摘要 |
PURPOSE:To polish inner surface of a circular tube without rotating the circular tube by storing a polishing jig inside of the circular tube to be polished, and by rotating the polishing jig around a circular tube shaft line through a shaft, so as to reciprocate the shaft along the shaft direction. CONSTITUTION:When a piston cylinder mechanism 2e is operated, a base truck 2b, along with intermediate trucks 2c, 2d, progresses to a circular tube (A) to be polished, on a rail 2a. Being stored inside the circular tube (A), a polishing jig (G) is rotated around a circular tube shaft line through a grinding stone shaft 1a. A piston movement direction of the piston cylinder mechanism 2e is altered at the same time, so as to reciprocate all the trucks 2b, 2c, 2d. Inner surface of the tube (A) is thus polished. |
