Method and apparatus for machining the side edge surface of a web plate

A method of machining a longitudinally extending side edge surface of a web plate having an upper and lower surface, comprising:

• providing a rotary cutter having cutting edges on a radially outer peripheral surface of said cutter which are at a predetermined angle with respect to the rotary axis of said cutter;
• orienting said cutter with respect to said web plate by having the rotary axis of said cutter inclined at a first angle for forming a second angle between the cutting edges and the longitudinal corner edge of the longitudinally extending side edge of said web plate to be machined, said second angle lying in a plane containing said longitudinally extending side edge surface and being within the range of 55 degrees to 125 degrees, and;
• rotating said rotary cutter in rotation, while moving said cutter and said web plate relative to each other for moving the longitudinally extending side edge surface of said web plate into contact with said radially outer peripheral surface of said cutter and past said cutter, whereby the longitudinally extending side edge surface of a web plate is machined.