Ch22-Mach_Ops-4e-Part1

Ch22-Mach_Ops-4e-Part1 - MACHINING OPERATIONS AND MACHINE...

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MACHINING OPERATIONS AND MACHINE TOOLS 1. Turning and Related Operations 2. Drilling and Related Operations 3. Milling 4. Machining Centers and Turning Centers 5. Other Machining Operations 6. Machining Operations for Special Geometries 7. High Speed Machining
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Machining Material removal process in which a sharp cutting tool is used to mechanically cut away material so that the desired part geometry remains Most common application: metal parts Most versatile of all manufacturing processes in its capability to produce a diversity of part shapes and geometric features with high precision and accuracy Casting can also produce a variety of shapes, but it lacks the precision and accuracy of machining
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Rotational - (a) cylindrical or disk‑like shape Nonrotational - (b) block‑like or plate‑like Classification of Machined Parts
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Machining Operations and Part Geometry Each machining operation produces a characteristic part geometry due to two factors: 1. Relative motions between tool and workpart Generating – part geometry determined by feed trajectory of cutting tool 2. Shape of the cutting tool Forming – part geometry is created by the shape of the cutting tool
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Generating shape: (a) straight turning, (b) taper turning, (c) contour turning, (d) plain milling, (e) profile milling Generating Shape
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Forming to create shape: (a) form turning, (b) drilling, and (c) broaching Forming to Create Shape
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Combination of forming and generating to create shape: (a) thread cutting on a lathe, and (b) slot milling Forming and Generating
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Turning Single point cutting tool removes material from a rotating workpiece to generate a cylindrical
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This note was uploaded on 01/24/2011 for the course IE 215 taught by Professor Groover during the Fall '08 term at Lehigh University .

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Ch22-Mach_Ops-4e-Part1 - MACHINING OPERATIONS AND MACHINE...

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