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turning
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R. Jerz 1 Mar-06
Machining Equations (Turning)
Machining Equations (Turning)
R. Jerz 2 Mar-06
Example from Book (p685)Example from Book (p685)
z A 6-in long, 0.5 in diameter 304 stainless-steel rod is being reduced in diameter to 0.48 in by turning on a lathe. The spindle rotates at N=400 rpm , and the tool is traveling at an axial speed of 8 in/min. Calculate, the cutting speed, material removal rate, cutting time, and power.
R. Jerz 3 Mar-06
Revisit TerminologyRevisit Terminology
z Independent Variables Material
(machinability) Cutting tool Speed (sfpm) Depth of cut (in) Feed (ipr or ips) Cutting environment
z Dependant Variables Metal removal rate Cut time Horsepower Temperature Surface finish
R. Jerz 4 Mar-06
Turning FormulasTurning Formulas
R. Jerz 5 Mar-06
Turning OperationTurning Operation
Figure 23.3 Schematic illustration of the basic turning operation, showing depth-of-cut, d; feed, f; and spindle rotational speed, N in rev/min. Cutting speed is the surface speed of the workpiece at the tool tip.
R. Jerz 6 Mar-06
Turning Turning
2Page 2
R. Jerz 7 Mar-06
Understanding FormulasUnderstanding Formulas
z (in class)
R. Jerz 8 Mar-06
Feeds & Speeds for Tool MaterialsFeeds & Speeds for Tool Materials
R. Jerz 9 Mar-06
Turning Feeds & SpeedsTurning Feeds & Speeds
R. Jerz 10 Mar-06
Energy RequirementsEnergy Requirements
R. Jerz 11 Mar-06
Cut EnvironmentCut Environment
R. Jerz 12 Mar-06
SolutionSolution
3Page 3
R. Jerz 13 Mar-06
SolutionSolution
R. Jerz 14 Mar-06
Kennametal CalculatorKennametal Calculator
R. Jerz 15 Mar-06
Kennametal CalculatorKennametal Calculator
R. Jerz 16 Mar-06
Kennametal CalculatorKennametal Calculator
R. Jerz 17 Mar-06
Equations, 1Equations, 1
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Equations, 2Equations, 2
4Page 4
R. Jerz 19 Mar-06
Equations, 3Equations, 3
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Equations, 4Equations, 4
R. Jerz 21 Mar-06
Equations, 5Equations, 5