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Electronics (電磁) drilling with a base Merced eosin
Electronics (電磁) drilling with a base Merced eosin
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机译:Electronics (电磁) drilling with a base Merced eosin
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摘要
A drilling machine has a base unit(2) mounted on the lower section of a frame(1) for electromagnetically fixing to a metallic workpiece. A motor (3') driven by electro-drill(3) is equipped with a circular cutting tool(7) and integrally fixed to the frame. A power switch(9') provides power to the drive motor and the electromagnetic base unit. A detector senses the load value of the drill. A first control system compares the load value with a stipulated first reference level and delivers an instruction signal when the load value is greater than this level. A second control system compares the detector load value with a stipulated second reference level which is higher than the first one.
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