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23 Cards in this Set

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  • Back
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:
Tool life
The Taylor equation expresses correlation between tool-life and cutting speed (p.545)

The diamond tools are used in hard turning due to their high thermal resistance

The cutting fluid is used for:


If you have to mill a flat surface, you are using:
Face milling

Peripheral milling
Broaching is used for:
Mass (large) production
In milling operation with horizontal and vertical-spindle machines, which one is likely to hold dimensional accuracy better?
Machine with vertical spindle
You have to machine a ceramics material. What kind of tool will you use?
Diamond tool
If you are not using the right coolant, what will happen to the workpiece?
The workpiece will be burned
The main parameter for grinding efficiency is:
Grinding Ratio
The honing operation is mainly for:
Internal Cylindrical Surfaces (ID)
Finishing operation (grinding, polishing, honing, etc) are necessary for:
Improve the surface roughness

Improve dimensional accuracy

Eliminate or diminishing the residual stress
Which is the reason for the large difference between specific energies involved in machining and grinding?
The flats of worn grains require high energy for friction

Large negative rake angle of the abrasive grains
In the grinding process, most of the heat is removed by:

Grinding fluid
Dressing operation is performed in order to:
Sharp the wheel

Eliminate the worn grains
The machining centers are used because
Increase the accuracy of parts (single clamping)

Decrease the machining time
Advantage of Electric-Discharge Machining (EDM) over the Electro-Chemical Machining (ECM) is:
Higher removal rates
Please identify the drill from the figure:
Step drill
Please identify the milling process from the figure:
Face milling
Please identify the process from the figure:
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.
Exact problem in the homework as #4 (different numbers)
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.
Just like #5 in the homework problems
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 Ws./mm^3.
Power = SE * MMR