| 摘要 |
A cutter bit made up of a cutter head block, a fixed cutter and a rotary cutter bit in said block. The fixed cutter is provided to do a limited amount of cutting along the side edge of a plate and the rotary cutter is free to rotate in the hollow in a cylindrical hollow bore in the cutter head block. The inner end of the rotary cutter rests on a thrust bearing and a threaded member positions the rotary cutter in the bore. Suitable lubrication fittings are provided to supply lubricant to the inside of the hollow around the cutter.
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