Manufacturing Technology: Unit I: Mechanics of Metal Cutting
Metal Removal Rate (MRR)
Mechanics of Metal Cutting - Manufacturing Technology
It is defined as the volume of metal removed in unit time. It is used to calculate the time required to remove the specified quantity of material from the workpiece.
METAL REMOVAL RATE (MRR) It is defined as the volume of metal removed in unit time. It is used to calculate the time required to remove the specified quantity of material from the workpiece. Let t - Depth of cut in mm f - Feed/rev. in mm V - Cutting speed in mm/s Metal removal rate, MRR = t × f × V in mm3/s If the metal removal rate is optimum, the machining cost is reduced. To achieve this, the following elements should be considered. • The cutting tool material should be properly selected • Cutting tool should be properly ground • Tool should be supported rigidly and therefore, there should not be any vibration. For turning operation, MRR =f × t × V For face and spot milling operation, MRR = B × t × T where B = Width of cut in mm T - Table travel in mm/s For planing and shaping, MRR = t × f × L × S where L - Length of workpiece S - Strokes per minute.
Manufacturing Technology: Unit I: Mechanics of Metal Cutting : Tag: : Mechanics of Metal Cutting - Manufacturing Technology - Metal Removal Rate (MRR)
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Manufacturing Technology
ME3493 4th semester Mechanical Dept | 2021 Regulation | 4th Semester Mechanical Dept 2021 Regulation