Title:
METHOD FOR CUTTING PIPE INNER SURFACE
Document Type and Number:
Japanese Patent JPH0373260
Kind Code:
A
Abstract:
PURPOSE: To obtain a large force of pressing and enhance the grinding efficiency by providing movably an electromagnet at the outer surface of a pipe corresponding to the position of a grinding jig, and sucking the tip portion of a rotary shaft, and moving it synchronously with the movement of the grinding jig.
CONSTITUTION: The tip portion of a rotary shaft 4 supporting a grinding jig 5 inserted into the inside of a pipe P, is sucked by means of a magnet 14 provided at the outside of the pipe P. As a result, the push-pressing force of the grinding jig 5 against the inside of the pipe P is made to be uniformalized, and also, the cutting force Ft of this grinding jig 5 can be made large.
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Inventors:
KOBAYASHI TERUO
Application Number:
JP20372989A
Publication Date:
March 28, 1991
Filing Date:
August 08, 1989
Export Citation:
Assignee:
KAWASAKI STEEL CO
International Classes:
B24B5/40; (IPC1-7): B24B5/40
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