Cutting Tools Episode 2 Part 6 pot

... teeth cutting at one time varies from 2 to 10 or more. Saws may be of the continuous cutting (band or rotary) or reciprocating type. A typical sawing operation is shown in Figure 15.1. The cutting ... is the cross section of the largest piece of stock that it can cut. Typical sizes are 6 x 6 inches to 24 x 24 inches. The motors used will vary from 1 to 10 horsepower. The speed o...

Ngày tải lên: 21/07/2014, 15:20

... in Figure 17. 16. The general purpose cutter grinder is the most popular and versatile tool grinding machine. Various attachments are available for sharpening most types of cutting tools. Sharpening ... grinder. Grinding wheel Workpiece Regulating wheel Work rest blade 6 Tooling & Production/Chapter 17 www.toolingandproduction.com Chap. 17: Grinding Methods and Machines wheel so t...

Ngày tải lên: 21/07/2014, 15:20

... tap wrench. (Courtesy: Morse Cutting Tools) Taps are used for threading a wide range of materials both ferrous and non-ferrous. All pipe taps are supplied with 2- 1 /2 to 3-1 /2 thread chamfer. The nominal ... per side, which makes eight partial FIGURE 11. 12: (a) Spiral-point taps have replaced ‘stan- dard’ taps in many cases. (b) A spiral-fluted bottoming tap. (Courtesy: Morse Cutti...

Ngày tải lên: 21/07/2014, 15:20

... Figure 18.11. 18.5 .2 Vertical Spindle Machines Vertical-spindle honing machines are used especially for larger, heavier work. These all have power stroking at speeds from 20 to 120 FPM. The length ... possible. It can re- move as little as 0.0001 inch of stock or as much as 0. 125 inch of stock. However, usually only 0.0 02 to 0. 020 inch stock is left on the diameter for honing. As show...

Ngày tải lên: 21/07/2014, 15:20

... is 90˚ 65 ˚ 45˚ 1 8 1v 8 1 8 1 8 T R T 60 ˚ 60 ˚ 60 ˚ 45˚ 45˚ EDC JG R = T 2 R = T 8 R = T 8 R = 3T 10 65 ˚ 65 ˚ 80˚ 80˚ 60 ˚ 23 ˚ 23 ˚ 60 ˚ R R R R T B T T A F R H T I T S K L R FIGURE 16. 10: Twelve ... sizes vary from 6 (very coarse) to 1000 (very fine). Grain sizes are broadly defined as coarse (6 to 24 ), me- dium (30 to 60 ), fine (70 to 180), and very fine (22 0 t...

Ngày tải lên: 21/07/2014, 15:20

... internal broaches. Keyway Broach: Almost all key- ways in machine tools and parts are cut by a keyway broach - a narrow, flat bar with cutting teeth spaced along one surface. Both external and internal keyways ... number of parts, all of the same diameter and keyway size, are to be machined, an internal keyway broach can be designed to fit into the hole to support the cutting teeth. Onl...

Ngày tải lên: 21/07/2014, 15:20

... unbalanced parts which can- not be rotated at high speeds; complex surface shapes, eccentric parts and components with additional elements that protrude; log, unstable shafts or thin-walled parts. Chap. ... available for end mills and shell mills as shown in Figures 13 .25 a and 13 .25 b respectively. For some opera- tions that require the use of tools with non-standard shank sizes, chucks...

Ngày tải lên: 21/07/2014, 15:20

... . 26 2 × 4 RPM = = = 3 82 IPM 30.5 RPM 3 82 apr = = = .080 in. apr .080 N 8 apt = = = .010 in. SFPM 380 . 26 2 × d . 26 2 × 6 RPM = = = 24 2 IPM=apt×N×RPM = .0 06 10 24 2=14.5 Chap. 12: Milling Cutters ... . 024 π apr = apt = .0 06 apt = .0 06 FIGURE 12. 17: Drawing of a milling cutter showing the difference between advance per revolution (apr) and advance per tooth (apt). SFPM 4...

Ngày tải lên: 21/07/2014, 15:20

... the machine size. Cutting Tools: Cutting tools are the same as those used on the table- type machine. Work holding is also the same, and angle plates are fre- quently used. 10.7 .2 Vertical Boring ... the machine at a cutting depth that is greater than the desired cutting depth compen- sates for the radial deflection. When cutting begins, the radial cutting force reduces the...

Ngày tải lên: 21/07/2014, 15:20

... 400 RPM = ________ = ________ = ____ . 26 2 x d . 26 2 x .75 .1 965 Answer = 20 35. 62 or 20 36 RPM Drilling Feed: Once the cutting speed has been selected for a particular workpiece material and condition, ... Given a .25 inch drill, what is the cutting speed (SFPM) drilling cast iron at 5000 RPM? SFPM = . 26 2 x d x RPM SFPM = . 26 2 x .25 x 5000 Answer = 327 .5 or 327 SFPM RPM ca...

Ngày tải lên: 21/07/2014, 15:20