5.3 POWER CONSUMED IN CUTTING
There are a number of reasons for wanting to calculate the power consumed in cutting. These numbers can tell us how fast we can cut, or how large the motor on a machine must be.
Having both the forces and velocities found with the Merchant for Circle, we are able to calculate the power,
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We can relate the energy used in cutting to the mrr.
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The cutting force will vary, thus changing Ps, as the cutting velocities are changed.
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Tool hardness is degraded by temperature, as shown in the diagram below [REF]
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The effects of rake angle on cutting are shown in the graph below, [REF ******]
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The horsepower required for cutting can be found using empirical methods,
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If we consider the implications these formulas have when cutting on a lathe, we would be able to develop the following equations,
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