Broaching, Sawing and Filing

Broaching, Sawing and Filing - Broaching, Sawing and Filing...

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Broaching, Sawing and Filing Chapter 27
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Broach
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Broaching Process Originally developed for producing internal keyways. Multi-tooth cutter, single pass operation Used in production to finish holes, splines, and flat surfaces. Rapid operation, low cycle times. (V 20 to 50 ft/min) Excellent surface finish produced (32 to 125 micro-inches) Excellent tolerance
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Broach Construction Long multitooth cutter with progressively deeper teeth, rise per tooth Rise per tooth: Surface: 0.003 to 0.006 inches/tooth Internal: 0.001 to 0.0025 inches/tooth Chips produced are held in tooth gullet during process
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Broach Construction Materials: High Speed Steel HSS with TiN coating Tungsten Carbide teeth (mass prod.) Styles: Solid Shell Sections (larger surface) Shapes Holes (round, square, hex, …) Keyways Internal Splines and gears Flat surfaces Spiral splines, gun barrel rifling
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Two teeth contact surface
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Broaching, Sawing and Filing - Broaching, Sawing and Filing...

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