Why Are Cutting Parameters Important Which of the following cutting parameters

Why are cutting parameters important which of the

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Why Are Cutting Parameters Important?
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Which of the following cutting parameters do you think has the least adverse effect on cutting tool life? Speeds Feeds Depths of Cut Why Are Cutting Parameters Important?
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Which of the following cutting parameters do you think has the least adverse effect on cutting tool life? Speeds Feeds Depths of Cut An increase in the depth of cut will reduce tool life the least, because it creates the least extra heat at any point on the cutting tool. Why Are Cutting Parameters Important?
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Even though Canada is officially a metric country, cutting speeds are normally expressed in units of SFPM: “Surface Feet Per Minute” Cutting speeds are normally found in a chart your log books or in the Speed & Feed tables in the Machinery’s Handbook. They can also be given to you by contacting the sales representative of your cutting tool manufacturer. Cutting speed must be converted from SFPM to RPM by doing a quick calculation Cutting Speed
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Step 1 : Obtain the correct cutting speed in SFPM. Calculating RPM For example, if you need to cut aluminum with a HSS cutting tool, your given cutting speed is 200 SFPM. Workpiece Material HSS Cutting Tools Carbide Cutting Tools Aluminum 200 600 Mild Steel 90 300 SAE4140 70 250 O1 55 170 P20 30 90 Note: Add 20% for coated carbide tools.
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Step 2 : Figure out which diameter you’re using: On a lathe, what is the diameter of being cut, in inches? Or, on a mill, what is the diameter of your cutting tool? Calculating RPM
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Step 3 : Calculate the RPM using the General Shop Formula : RPM = 12 x CS π x Ø Calculating RPM For example, if your cutting speed is 200 SFPM, and you are cutting a 5-inch diameter on a lathe, the RPM on the machine should be set to 153 RPM. If this setting is not available on the machine, use the RPM nearest to it that is below 153 RPM.
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You need to cut mild steel on a lathe with a HSS cutting tool. The diameter of cut is 10.5 inches. What is the correct, calculated RPM? Student Activity
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You need to cut mild steel on a lathe with a HSS cutting tool. The diameter of cut is 10.5 inches. What is the correct, calculated RPM? Student Activity RPM = 12 x CS π x Ø RPM = 12 x 90 π x 10.5 RPM = 33
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You need to cut SAE4140 on a mill with an uncoated carbide cutting tool. The diameter of the cutter is 1.25 inches. What is the correct, calculated RPM? Student Activity
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Student Activity RPM = 12 x CS π x Ø RPM = 12 x 250 π x 1.25 RPM = 764 You need to cut SAE4140 on a mill with an uncoated carbide cutting tool. The diameter of the cutter is 1.25 inches. What is the correct, calculated RPM?
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You need to cut aluminum on a mill with a coated carbide cutting tool. The diameter of the cutter is 0.125 inches. What is the correct, calculated RPM?
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  • Summer '20
  • Milling machine, Lathe, Milling cutter, carbide cutting tools, HSS Cutting Tools

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