Question

Example The outside diameter of a cylinder made of aluminum alloy is to be turned. The starting diameter = 400 mm, and the length = 1100 mm. Feed = 0.35 mm/rev, and depth of cut = 2.5 mm. The cut will be made with a cemented carbide tool ($\alpha$=10°) whose Taylor tool life parameters are: n = 0.24 and C = 450. Units for the Taylor equation are min for tool life and m/min for cutting speed. Compute the cutting speed that will allow the tool life to be 10% longer than the machining time for this part. If this lathe machine is 92% efficient, estimate the energy consumption. Estimate the shear-strength (MPa) of this material, if the chip thickness is measured to be 0.673mm.

          Example
The outside diameter of a cylinder made of aluminum alloy is to be turned. The
starting diameter = 400 mm, and the length = 1100 mm. Feed = 0.35 mm/rev,
and depth of cut = 2.5 mm. The cut will be made with a cemented carbide tool
($\alpha$=10°) whose Taylor tool life parameters are: n = 0.24 and C = 450. Units for
the Taylor equation are min for tool life and m/min for cutting speed. Compute
the cutting speed that will allow the tool life to be 10% longer than the
machining time for this part.
If this lathe machine is 92% efficient, estimate the energy consumption.
Estimate the shear-strength (MPa) of this material, if the chip thickness is
measured to be 0.673mm.

Example
The outside diameter of a cylinder made of aluminum alloy is to be turned. The
starting diameter = 400 mm, and the length = 1100 mm. Feed = 0.35 mm/rev,
and depth of cut = 2.5 mm. The cut will be made with a cemented carbide tool
(α=10°) whose Taylor tool life parameters are: n = 0.24 and C = 450. Units for
the Taylor equation are min for tool life and m/min for cutting speed. Compute
the cutting speed that will allow the tool life to be 10% longer than the
machining time for this part.
If this lathe machine is 92% efficient, estimate the energy consumption.
Estimate the shear-strength (MPa) of this material, if the chip thickness is
measured to be 0.673mm.

Added by Holly H.

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