| 摘要 |
Burr-free fast cutting or machining of workpieces with thermoplastic layers bonded to harder backing members. Both the thermoplastic and its backing member are contacted by a high speed tool, and the thermoplastic layer is trimmed before the produced heat softens or melts the thermoplastic at the trim location. A high speed tool is used which is capable of operating upon the harder member. Offset from the workpiece contacting portion of the high speed tool, one or more trimming teeth trim the thermoplastic layer at intervals inwardly of the machined workpiece area where the thermoplastic is yet to be heated significantly and softened. The high speed tool may be a multitooth rotary cutter blade supporting a single offset tooth.
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