Tài liệu Cutting Tools P9 doc

... underneath the cutting edge. Pressurized cutting fluid is pumped through the tool’s body and out the hole (see Figure 9.18). The fluid serves a three-fold purpose: it lubricates and cools the cutting ... shown in Figure 9.12. Drill Chucks: Cutting tools with straight shanks are generally held in a drill chuck. The most common drill chuck uses a key to lock the cutting tool. Drill...

Ngày tải lên: 25/12/2013, 23:17

... tipped cutting tools sim- ilar to those used on shapers. However, since planers make heavy cuts, their tools are much larger. Rake relief angles are similar to those used on lath- es for cutting ... fin- ishing. Cutting angles for tools depend on the tool used and the workpiece materi- al. They are similar to angles used on other single-point tools, but the end clearance does not...

Ngày tải lên: 17/12/2013, 11:15

... to support the cutting teeth. Only the cutting teeth extend beyond the hole diameter to cut the keyway. Bushings or horns are not required. Burnishers: Burnishers are broach- ing tools designed ... normal cutting speeds of 100 FPM. These machines, a major factor in the auto- motive industry for many years, turn out a great variety of cast iron parts. They use standard carbide cutting...

Ngày tải lên: 25/12/2013, 23:17

... fluted cutting tool to smooth, enlarge, or accurately size an existing hole. Reaming is performed using the same types of machines as drilling. A reamer is a rotary cutting tool with one or more cutting ... must never be turned backward or the cutting edges will be dulled. * Any burrs or nicks on the cutting edges must be removed with an oil- stone to prevent cutting oversize hole...

Ngày tải lên: 25/12/2013, 23:17

... spiral-fluted bottoming tap. (Courtesy: Morse Cutting Tools) FIGURE 11.13: Straight and spiral- fluted pipe taps and a T-handle tap wrench. (Courtesy: Morse Cutting Tools) Taps are used for threading a ... at the front end of each land of a chaser, tap, or die by cutting away and relieving the crest of the first few teeth to distribute the cutting ac- tion over several teeth. Cres...

Ngày tải lên: 25/12/2013, 23:17

... on each cylinder to observe the color of the exhaust is another check. Still another method is cutting off the fuel supply to one cylinder at a time to see what effect it has on the engine

Ngày tải lên: 12/12/2013, 06:15

Ngày tải lên: 12/12/2013, 22:15

... metals. Some diamond cutting tools are made of a diamond crystal compaction (many small crystals pressed together) bonded to a carbide base (Fig. 1.16). These dia- mond cutting tools should only ... Hardness and strength of the cutting tool must be maintained at elevated temperatures also called Hot Hardness Toughness: Toughness of cutting tools is needed so that tools don’t c...

Ngày tải lên: 17/12/2013, 11:15

... of the cutting tool, are dependent on the multi- tude of cutting conditions and especial- ly on the cutting speeds and cutting flu- ids. Aside from the sudden premature breakage of the cutting ... Single Point Cutting Tools The metal cutting tool separates chips from the workpiece in order to cut the part to the desired shape and size. There is a great variety of metal cuttin...

Ngày tải lên: 17/12/2013, 11:15

... careful selection of cutting geometry and speed. Positive rake tools are often preferred on these materials to minimize part deflection and to reduce cutting temperatures in the cutting zone. The ... when cutting cast iron. Tool life may be defined as the peri- od of time that the cutting tool performs efficiently. Many variables such as material to be machined, cutting tool mat...

Ngày tải lên: 17/12/2013, 11:15