Slot drill cutters

Designed for milling tee slots in machine tables, this cutter has teeth on its circumference and on both sides. To reduce chatter and provide maximum chip clearance, the teeth are alternately right-hand and left-hand helix, and each alternate side tooth is removed. To produce a tee slot, the groove is first cut using a side-and-face cutter, end mill or slot drill and finally the wide slot at the bottom is cut using a tee-slot cutter. Fig. 11.8(k). The shank is reduced to clear the initial groove. This cutter is available for standard tee slots to suit bolt sizes up to 24 mm. 

Small complex tool steel parts are being made by conventional compaction and sintering in vacuum to near theoretical density. AppHcations include spade drills, knife blades, slotting cutters, insert blades for gear cutters, reamer blades, and cutting tool inserts. 

Usually having two or three helical teeth cut in the circumference and teeth on the end, cut to the centre, this cutter can be fed along its own axis in the same way as a drill. It is used to produce keyways and blind slots with the cutter sunk into the material like a drill and fed longitudinally the length of the key way or slot, cutting on its circumference. Fig. 11.8(j). It is available in a variety of sizes up to 50 mm diameter. 

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