gear cutting
DESCRIPTION
kghTRANSCRIPT
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Forging new generations of engineers
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Gear Cutting
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Making GearsGear cutting equipmentPreparing a gear blankGear involute cuttersCutting a spur gearIdentify current gear usesApply gear knowledge to real situations
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Diametral Pitch is the actual size of the gear tooth.The lower the number the larger the tooth.The chart at left shows 3 dp. as larger tooth and 20 dp as the smallest tooth.Diametral Pitch3 dp20 dp
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Gear Tooth Parts
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Gear Cutting EquipmentMetal LatheHorizontal MillHorizontal Cutoff SawIndexing HeadDrill BitGear Involute CutterGear Blank & Mandrel
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Gear Cutting EquipmentHorizontal Mill SawCutoff Band Saw
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Gear Cutting EquipmentMetal LatheDrillGear CutterGear Tooth GageGear BlankMandrel
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Horizontal Cutoff SawCutting Gear Blank
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Metal Lathe Used To Face Sides Of Gear Blank And Drill A 1 Hole
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Rough Gear Blank Mounted On A Mandrel
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Mandrel And Gear Blank Assembly Mounted On The LatheTurned To Finished Gear Diameter And Thickness
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Indexing Head Used To Exactly Position Gear Blank To Cut Each Tooth
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Math Gear Calculations16 Diametral Pitch X 2 Inch Diameter Gear Blank Equals Number Of TeethN = D.P. X D.G. N = 16 X 2 N = 32 Teeth
40 Turns Of The Dividing Head Hand Crank Equals 1 Revolution Of The Gear BlankTurns = 40/32 = 10/8 = 5/4 = 1 And 1/4 Turns
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Math Gear CalculationsUsing a 20 hole plate 1/4 turn = 20/4 = 5 spaces or 6 holes in plate. This moves our gear blank 1 and 1/4 turns.Outside diameter of gear = 32th + 2/16 =2.125
Cutting depth for tooth = 2.250 a constant divided by d.P. Depth = 2.250/16 = .140 thousands for depth of cut.
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20 Hole Indexing Plate Mounted On Indexing Head
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Horizontal Mill Set Up With Indexing Head, Mandrel & Gear Blank
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Horizontal Mill Set Up To Cut Gear
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Gear Blank Aligned With Gear Involute Cutter
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Gear Involute Cutter Cutting Gear
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Checking Finished Gear With Involute Gage
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Measuring Finished Gear
Gear CuttingPrinciples of EngineeringTMUnit 4 - Lesson 4.1 - Mechanisms
Project Lead The Way, Inc.Copyright 2007
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