Page 236 - Demo

234 ISCAR DEEP HOLE DRILLINGBTA drill head designs are quite diverse and can be classified as follows: BTA Drill HeadsIndexableInsert DrillsBrazed TipsDrilling HeadModular Drill Head (WithoutCartridges)Adjustable Drill Head(With Cartridges)ISCAR-DEEP-DRILLTRI-DEEP ISCAR-DEEP-DRILLFINE-BEAMThe BTA drill head has a hollow cylindrical shape with single cutting edge. The cutting edge can consist of one or more indexable inserts or brazed tips, depending on the diameter of the drill head. The guide pads are positioned at the circumference of the drill head. The guide pads brace the tool against the machined surface, which is another distinctive feature of the BTA process and the tool.Figure 6.6.2.2Deep Single Tube Drills with External 4-Start Thread ConnectionIndexable insertGude padDeep Single Tube Drills with InternalSingle-Start Thread ConnectionIndexable insertGude pad