出典:Wikipedia
出典:『Wikipedia』 (2011/06/24 04:01 UTC 版)
A Boring bar is a tool used in metalworking and woodworking. Boring is a technique used in many aspects of building. Woodworkers have used boring as a form of drilling for centuries. In woodworking, the boring tool is static in size and used to form circular plunge cuts. In metalworking, boring is slightly different in that it refers to not only the creation of a hole but includes the ability of making a non circular hole. In metal boring you can plunge and drag the tool in the X,Y or Z axis creating a slot or asymmetrical hole or channel. Or, use it in an up and down motion (Z axis) to create a smooth cut perfect circular hole.