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For a slab milling operation using a 5-in diameter 11-tooth cutter see Figure 20-6 the feed per tooth is 0.005 in tooth with a cutting speed of 100 sfpm HSS steel Calculate the rpm

For a slab milling operation using a 5-in.-diameter, 11-tooth cutter (see Figure 20-6), the feed per tooth is 0.005 in./tooth with a cutting speed of 100 sfpm (HSS steel). Calculate the rpm of the cutter and the feed rate (fm) of the table, then calculate the metal removal rate, MRR, where the width of the block being machined is 2 in. and the depth of cut is 0.25 in. Calculate the time to machine (Tm) a 6-in.-long block of metal with this setup. Suppose you switched to a coated-carbide tool, so you increase the cutting speed to 400 sfpm. Now recalculate the machining time (Tm) with all the other parameters the same.

May 19 2020 View more View Less

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