| 摘要 |
PROBLEM TO BE SOLVED: To eliminate a burr and deformation by cutting of a round or square pipe having a large diameter by cutting the pipe under a specific cutting condition by using a high speed tip saw to rotate at specific peripheral speed and rotating speed in a traveling type pipe cutter to travel at specific line speed. SOLUTION: In a traveling type pipe cutter to travel at line speed of 0.1 to 100m/min when stainless steel hard round pipe and square pipe are cut, a high speed tip saw to rotate at peripheral speed of 700 to 1400m/min and rotating speed of 600 to 1300 mrpm is used. Cutting is performed so as to satisfy a cutting condition decided by cutting time T on which an expression is [T(sec)=t×M×Y] and the cut number on which an expression is [the cut number = 1/(T×line speed)] besides a cutting condition where maximum feed speed is not more than 300mm/sec and a notch quantity per a single blade is 0.05 to 0.1mm. Here, in the expressions, (t) is a thickness of a cutting object pipe, and M is an outer periphery of the cutting object pipe, and Y is a cutting constant decided by a construction material of the cutting object pipe.
|
