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PURPOSE: To stably and surely cut the corner part of a work in an effectual machining condition when the work is irradiated with laser beam to be cut.
CONSTITUTION: Whether or not a machining course (locus) by a machining program which is now in execution corresponds to a point B of a corner part is discriminated and when it is the point B, stepwise machining is performed according to the machining condition M stored in advance in an RAM3 (step S2). In other words, when the machining arrives at the point B of the corner part, the machining condition is once set to a lower level or a value 0, then, the machining is increased to the usual macining condition M0 in a stepwise state in accordance with the machining position (time). When cutting at the point B of the corner part is completed, the usual cutting is performed as it is in the cutting condition M0 (step B3). Cutting at the point B of the corner part can be performed stably and surely under the effectual machining condition.
COPYRIGHT: (C)1994,JPO&Japio
【目的】 ワークにレーザビームを照射して切断加工を 行う場合、角部の切断加工を実効果のある加工条件で安 定して確実に行う。
【構成】 現在実行中の加工プログラムによる加工経路 (軌跡)が角部B点に相当するか否かを判別し(ステッ プS1)、角部B点であれば、予めRAM3に格納され た加工条件Mに従い、ステップ状の切断加工を行う(ス テップS2)。 すなわち、加工条件を角部B点に到達し た時点で一旦低レベルまたは値0とし、その後、加工位 置(時間)と共にステップ状に通常の加工条件M[0 ]まで 増加させる。 角部B点での切断加工が完了するとそのま ま加工条件M[0 ]で通常の切断加工を行う(ステップS 3)。 このため、角部B点の切断加工を実効果のある加 工条件で安定して確実に行うことができる。