| 摘要 |
An engineers cutting tool is particularly suitable for roughing aluminium planks for aircraft. A shank (10) of alloy steel has a space therein for a blade (20) of hard metal. A wedge (22) secures the blade (20) in the space by means of a screw threaded in a blade (24). The space has a bottom edge (40) inclined to the axis of the shank (10), and a pin (42) fixed to the side. The blade (20) has an entry edge (30) for contacting the bottom edge (40) and a guide groove (not in Figure 1) for the pin (42). The longitudinal position of the blade (20) in relation to the shank (10) determines the outside or cutting diameter of the tool, and makes it possible for this diameter to be adjusted after regrinding. The blade (20) may by flat or helical. |
