| 摘要 |
PURPOSE:To detect the knife edge position of multikinds of cutting tools with high accuracy by equipping a numerical value control device detecting the cutting tool knife edge position by the specified positional signal output at the time when a respec tive detection head is pressed by the movement of the cutting tool knife edge. CONSTITUTION:When the knife edge B'1 of the bite B1 for outer diameter cutting pushes a detection shaft 46 in Z direction by abutting to the surface 10' of a detection head 10, the slope 50' of the V groove 50 provided on the detection shaft 46 pushes a stainless steel ball 51 in X direction. So, the steel ball 51 is moved in X direction inside a sliding groove 45, sliding a slide shaft 52 in X direction against the repulsion force of a coil spring 70, so the rod 58 screwed at the tip of the shaft 52 is also advanced in X direction. A limit switch for high sensibility detection is actuated by this movement, an NC control device measures and calculates automatically the coordinate value of the cutting tool stand of this time and takes it as the knife edge position of the bite B1. The shaft 46 is then moved in Z' direction by abutting the knife edge B'3 of the bite B3 for the inner diameter cutting to the surface 12' of the detection head 12 for the inner diameter cutting and the knife edge position of the knife edge D'3 of the bite B3 is found by performing the above similarly. |
