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High-speed machining (HSM) is being considered to produce the aluminum part in Problem 22.15. All cut-ting conditions remain the same except for the cutting speed and the type of insert used in the cutter. Assume that the cutting speed. Determine
(a) the new time to machine the part and
(b) the new metal removal rate.
(c) Is this part a good candidate for high-speed machining? Explain.
Problem 22.15
A face milling operation is used to machine 6.0 mm in a single pass from the top surface of a rectangular piece of aluminum 300 mm long by 125 mm wide. The cutter has four teeth (cemented carbide inserts) and is 150 mm in diameter. The cutting speed is 2.8 m/s, and the chip load is 0.27 mm/tooth. Determine
(a) time to make one pass across the surface and
(b) the maximum metal removal rate during cutting.
Set up a table showing curve elevations at the PVC, at the PVT, and at the half-station points along the curve. Compute the station and elevation of the curve turning point.
During a walk.through of a work package, you discover a team member completing the work differently than stated in the WBS dictionary. How should you deal with this?
Shear and normal stresses on aplane that is 37 degrees from horizontal
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Some hypothetical alloy is composed of 12.5 wt% of metal A and 87.5 wt% of metal B. If the densities of metals A and B are 4.27 and 6.35 g/cm3, respectively, whereas their respective atomic weights are
The coefficients of kinetic friction between the blocks and the inclined plane are a=0.1,b=0.3. Neglect the mass of the link. Angle between the inclined plane and the surface is 30 degree.
What is an estimate-generated schedule? What "crossovers" between cost estimating and scheduling? Can you provide two or three examples?
Suppose that 0.03% of plastic containers manufactured by a certain process have small holes that render them unfit for use. Let X represent the number of containers in a random sample on 10000 that have this defect.
For Vectors A=(i + 2j - 3k) and B=(4i - 5j + 6k), determine:
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