Simple opening and closing system ideal for the machining of cast iron and aluminum. The wing can be exchanged to meet various application requirements including simple back spot facing and front & back chamfering. 90_ back spot facing, 30_&60_ back chamfering, 45_ chamfering/back chamfering.
When inserting into a starting hole, the machine spindle is rotated in the reverse direction while closing the wing by touching the starting hole of the workpiece. Once the wing passes through the hole, the spindle is rotated in the forward direction in order to open the wing and perform back spot facing.
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