S.B. Roll No. _____________
TOOL DESIGN
1st
Exam/CAD/9228/Dec’11
Duration: 3 Hrs M. Marks: 75
Note: Attempt
any five questions.
Q1 Sketch a twiss drill and writ and
briefly the following elements:
Lip angle
Helix angle
Chisel angle and
Point angle
Land width
Margin
Black
taper and
Shank
Q2
a. Sketch
a single point cutting tool and show on it various tool elements and tool
angles 7
b. Discus various type of tools wears.
Q3 a. Enumerate
the various factors on which tool life depend.
b. Explain the method of cutting gears by
milling.
Q4 a. How
the milling cutter are classified.
b. Draw a plain line cutter showing various
design features.
Q5 a. What
is the six-point location principle? Explain it with the help of
Suitable sketches.
b. What
purpose indexing jigs are used?
Q6 a. Find
the total pressure, dimensions of tools to produce a waster 5cm
outsider diameter with a 2.4
cm diameter hole from material 4mm thick
having a shear of 360 N/mm2.
Q7 a. A
cup without flanges and a height 10cm and diameter 5cm is to be made
From sheet metal 2.5mm thick.
Find the suitable number of draws.
b. What
is the function of providing ‘straight’ and ‘angular clearance’ in
the die block?
Q8 a. Name
the various type of clamping devices and explain any two with
Figures.
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North India Campus