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Published byAlicia Watson Modified over 8 years ago
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Milling Defined The process of cutting away material by feeding a workpiece past a rotating multiple tooth cutter
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Vertical Milling Machine
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Milling Machine Parts
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Horizontal Milling Machine
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Milling Operation
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Conventional or Up Milling
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Climb Milling
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Milling Cutters
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End Mills
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Tool Holding for Milling
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End Milling
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Face Milling
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Milling Workholding Devices
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Calculating RPM For Milling RPM = CS x 4/D Where RPM = Spindle speed (in revolutions per minute). CS = cutting speed of milling cutter (in SFPM) D = diameter of milling cutter (in inches)
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Calculating Feed Rate For Milling Feed Rate is expressed in IPM IPM = CPT x N x RPM IPM = Feed rate in inches per minute. CPT = Chip per tooth N = Number of teeth of the milling cutter
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Calculate Feed Rate For Milling Given The Following: CS = 300 D = 0.5” CPT = 0.005 N = 2
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Answer The first step is to calculate the spindle speed before the feed rate can be calculated. RPM = CS X 4/D = 300 x 4/0.5 = 2,400 The second step is to calculate the feed rate. IPM = CPT x N x RPM = 0.005 x 2 x 2,400 = 24 IPM (Inches Per Minute)
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Offset Boring Head
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Right Angle Attachments
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Digital Readout
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Bed-Type Milling Machine
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Horizontal Knee/Column Milling Machine
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Machining Center
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Calculate IPM and RPM Given that: –CS = 250 –D = 0.25” –CPT = 0.003 –N = 4 Show your work here: RPM = _______; IPM = ________ Your Name: ________________________
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