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23 Cards in this Set
- Front
- Back
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1) The build-up edge (BUE) (which consist in layers of material from the workpiece that gradually are deposited on the tool tip) has a positive effect on:
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Tool life
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The Taylor equation expresses correlation between tool-life and cutting speed (p.545)
[TRUE or FALSE]? |
TRUE
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The diamond tools are used in hard turning due to their high thermal resistance
[TRUE or FALSE]? |
FALSE
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The cutting fluid is used for:
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Cooling
Lubricant Cleaning |
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If you have to mill a flat surface, you are using:
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Face milling
Peripheral milling |
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Broaching is used for:
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Mass (large) production
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In milling operation with horizontal and vertical-spindle machines, which one is likely to hold dimensional accuracy better?
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Machine with vertical spindle
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You have to machine a ceramics material. What kind of tool will you use?
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Diamond tool
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If you are not using the right coolant, what will happen to the workpiece?
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The workpiece will be burned
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The main parameter for grinding efficiency is:
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Grinding Ratio
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The honing operation is mainly for:
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Internal Cylindrical Surfaces (ID)
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Finishing operation (grinding, polishing, honing, etc) are necessary for:
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Improve the surface roughness
Improve dimensional accuracy Eliminate or diminishing the residual stress |
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Which is the reason for the large difference between specific energies involved in machining and grinding?
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The flats of worn grains require high energy for friction
Large negative rake angle of the abrasive grains |
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In the grinding process, most of the heat is removed by:
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Chips
Grinding fluid |
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Dressing operation is performed in order to:
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Sharp the wheel
Eliminate the worn grains |
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The machining centers are used because
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Increase the accuracy of parts (single clamping)
Decrease the machining time |
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Advantage of Electric-Discharge Machining (EDM) over the Electro-Chemical Machining (ECM) is:
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Higher removal rates
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Please identify the drill from the figure:
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Step drill
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Please identify the milling process from the figure:
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Face milling
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Please identify the process from the figure:
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Superfinishing
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An orthogonal cutting operation is being carried out under the following conditions:…..Calculate the percentage of the total energy that is dissipated in the share plan.
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Exact problem in the homework as #4 (different numbers)
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For a turning operation using a ceramic tool, if the speed will be doubled, please calculate the f2/f1 ratio. Use n = 0.5 and y = 0.6.
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Just like #5 in the homework problems
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In a face milling operation (see figure) assume that D = 100 mm, w = 60 mm, l = 400 mm, v=0.5 m/min, d = 2 mm and N = 200 rpm. The cutter has 20 inserts and the workpiece in high strength aluminum alloy. Calculate the material removal rate, cutting time, and feed per-tooth. Estimate the power required knowing that the unit power (specific energy) is 1.1 Ws./mm^3.
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f=v/Nn
MMR=wdv lc=(Dd)^0.5 t=l+lc/v Power = SE * MMR |
