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Kalpakjian Schmid Manufacturing Engineering and Technology © 2001 Prentice-Hall Page L1-1 CHAPTER 22 Machining Processes Used to Produce Round Shapes.

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Presentation on theme: "Kalpakjian Schmid Manufacturing Engineering and Technology © 2001 Prentice-Hall Page L1-1 CHAPTER 22 Machining Processes Used to Produce Round Shapes."— Presentation transcript:

1 Kalpakjian Schmid Manufacturing Engineering and Technology © 2001 Prentice-Hall Page L1-1 CHAPTER 22 Machining Processes Used to Produce Round Shapes

2 Kalpakjian Schmid Manufacturing Engineering and Technology © 2001 Prentice-Hall Page L1-2 Cutting Operations Figure 22.1 Various cutting operations that can be performed on a late. Not that all parts have circular symmetry.

3 Kalpakjian Schmid Manufacturing Engineering and Technology © 2001 Prentice-Hall Page L1-3 Components of a Lathe Figure 22.2 Components of a lathe. Source: Courtesy of Heidenreich & Harbeck

4 Kalpakjian Schmid Manufacturing Engineering and Technology © 2001 Prentice-Hall Page L1-4 General Characteristics of Machining Processes

5 Kalpakjian Schmid Manufacturing Engineering and Technology © 2001 Prentice-Hall Page L1-5 Schematic Illustration of a Turning Operation Figure 22.3 (a) Schematic illustration of a turning operation showing depth of cut, d, and feed, f. Cutting speed is the surface speed of the workpiece at the F c, is the cutting force, F t is the thrust or feed force (in the direction of feed, F r is the radial force that tends to push the tool away from the workpiece being machined. Compare this figure with Fig for a two-dimensional cutting operation.

6 Kalpakjian Schmid Manufacturing Engineering and Technology © 2001 Prentice-Hall Page L1-6 Right-Hand Cutting Tool Figure 22.4 (a) Designations and symbols for a right-hand cutting tool; solid high-speed-steel tools have a similar designation. Right-hand means that the tool travels from right to left as shown in Fig. 22.1a. (continued)

7 Kalpakjian Schmid Manufacturing Engineering and Technology © 2001 Prentice-Hall Page L1-7 Right-Hand Cutting Tool (cont.) Figure 22.4 (continued) (b) Square insert in a right-hand toolholder for a turning operation. A wide variety of toolholders are available for holding inserts at various angles. Source: Kennametal Inc.

8 Kalpakjian Schmid Manufacturing Engineering and Technology © 2001 Prentice-Hall Page L1-8 General Recommendations for Turning Tool Angles

9 Kalpakjian Schmid Manufacturing Engineering and Technology © 2001 Prentice-Hall Page L1-9 Summary of Turning Parameters and Formulas

10 Kalpakjian Schmid Manufacturing Engineering and Technology © 2001 Prentice-Hall Page L1-10 Cutting Speeds for Various Tool Materials Figure 22.5 The range of applicable cutting speeds and feeds for a variety of tool materials. Source: Valenite.

11 Kalpakjian Schmid Manufacturing Engineering and Technology © 2001 Prentice-Hall Page L1-11 General Recommendations for Turning Operations

12 Kalpakjian Schmid Manufacturing Engineering and Technology © 2001 Prentice-Hall Page L1-12 General Recommendations for Turning Operations (cont.)

13 Kalpakjian Schmid Manufacturing Engineering and Technology © 2001 Prentice-Hall Page L1-13 General Recommendations for Turning Operations (cont.)

14 Kalpakjian Schmid Manufacturing Engineering and Technology © 2001 Prentice-Hall Page L1-14 General Recommendations for Turning Operations (cont.)

15 Kalpakjian Schmid Manufacturing Engineering and Technology © 2001 Prentice-Hall Page L1-15 General Recommendations for Cutting Fluids for Machining

16 Kalpakjian Schmid Manufacturing Engineering and Technology © 2001 Prentice-Hall Page L1-16 Typical Capacities and Maximum Workpiece Dimensions for Machine Tools


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