| 摘要 |
A portable chamfering grinding device for chamfering the end of a metal tube comprising an abrasive wheel and a portable pneumatic motor capable of rotating the wheel at greater than 10,000 r.p.m., the wheel including a diverging frustoconical portion having an inner grinding surface at an angle of about 37.5 DEG to the axis of the wheel for receiving and grinding the end of the metal tube. The inner grinding surface has eight raised, substantially trapezoidal grinding portions thereof to provide cutting edges and reduce shaking and slipping during grinding of the metal tube end. |
