hw4 - ME363 HW4 1. Name Due 9/30/2010 The following data...

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ME363 HW4 Name Due 9/30/2010 1. The following data has been obtained for machining AA390 aluminum, a Si-Al alloy. Tool life (m/min) of Workpiece Material Tool Material 30 min. 60 min sand casting Diamond (PCD) 642 514 permanent mold casting Diamond (PCD) 517 411 PMC with flood cooling Diamond (PCD) 554 472 Compute C and n values for the Taylor tool life equation. 2. Three tool materials are to be compared for the same finish turning operation on a batch of 100 steel parts: high speed steel, cemented carbide and ceramic. Following table provide information on the Taylor tool life equations and operating conditions for each tool. n C Tool cost ($) Tool change time (min) High speed steel 0.125 200 15 3 Cemented carbide 0.25 1500 6 1 Ceramic 0.6 10,000 8 1 The HSS tool can be reground 15 times at a cost of $1.5. The number of edges for cemented carbide and ceramic tools are 6 for both. The time to change workpiece is 2.0 min, and feed and depth of cut are 0.010 in/rev and 0.050 in, respectively.
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hw4 - ME363 HW4 1. Name Due 9/30/2010 The following data...

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