21.16 (c): (USCS units) Slab milling that is to be performed on the top surface of a rectangular workpiece that is 12 inches long by 2.5 inches wide by 4.0 inches thick is found to have a feed rate of 7.64 inches/minute. The helical milling cutter to be used has a 3.0 inch diameter and overhangs the width of the part on both sides. If an additional approach travel distance of 0.5 inches is provided at the beginning of the pass (before cutting begins), and an overtravel distance is provided at the end of the pass equal to the cutter radius plus 0.5 inches, (c) what is the duration of the feed motion. Note: Give your final answer in units of minutes.
21.16 (c): (USCS units) Slab milling that is to be performed on the top surface of a rectangular workpiece that is 12 inches long by 2.5 inches wide by 4.0 inches thick is found to have a feed rate of 7.64 inches/minute. The helical milling cutter to be used has a 3.0 inch diameter and overhangs the width of the part on both sides. If an additional approach travel distance of 0.5 inches is provided at the beginning of the pass (before cutting begins), and an overtravel distance is provided at the end of the pass equal to the cutter radius plus 0.5 inches, (c) what is the duration of the feed motion. Note: Give your final answer in units of minutes.
Precision Machining Technology (MindTap Course List)
2nd Edition
ISBN:9781285444543
Author:Peter J. Hoffman, Eric S. Hopewell, Brian Janes
Publisher:Peter J. Hoffman, Eric S. Hopewell, Brian Janes
Chapter6: Milling
Section6.1: Introduction To The Vertical Milling Machine
Problem 10RQ: What is a benefit of using a DRO instead of micrometer collars for positioning on a vertical milling...
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