tailieunhanh - Process Planning Episode 6

Tham khảo tài liệu 'process planning episode 6', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Production equipment and tooling selection 195 Tooling for shaping and planing As explained earlier in this chapter shaping and planing are very similar processes and as such the tooling for these are also similar. The tooling for these processes depends very much on the operation being performed. The basic operations carried out by shaping and planing machines are roughing slotting side cutting dovetail cutting and finishing. The cutting tools used for these particular operations are illusttated in Fig. . Tooling for drilling The most common tool used for making holes is the fluted or twist drill. Drills are made with two three or four cutting lips. The two-lip drill is used for drilling solid material. The three- and four-lip drills are usually used for enlarging holes previously drilled. Other variations on this basic drilling tool are spade drills indexable insert drills gun drills hole saws and trepanning tools. Examples of these are illustrated in Fig. . Another set of related Slotting Side Roughing Dovetail Roughing Finishing Shaping planing tools and operations Swift and Booker Figure 1997 Adjustable depth stop holder and countersinks as used in the aircraft industry Typical taper shank twist drill Spade drill Indexable insert drill Gun drill Drill types with internal coolant channel Examples of tools used for cutting holes in sheet materials Figure Drilling tools Swift and Booker 1997 196 Process Planning length Typical taper shank spiral flute reamer End view Straight fluted hand reamer Shell reamer Combination spiral reamer with pilot drill Figure Reaming tools Swift and Booker 1997 Adjustable insert reamer cutting tools that can be used with drilling machines are those used for reaming. Often referred to as a process in its own right reaming actually refers to the use of specific cutting tools of various types and with multiple cutting edges. These are generally used to improve accuracy roundness and surface finish of existing .