Advanced Machine Tools and Machining Questions & Answers on “Shaper Cutting Parameters”.
1. Which type of cutting parameters are there in shaper?
a) feed
b) depth of cut
c) machining time
d) all of the mentioned
Answer: d
Clarification: Feed, depth of cut, machining time all are cutting parameters. Apart from these, cutting speed and metal removal rate are also termed as cutting parameters.
2. The cutting action in shaper is intermittent.
a) true
b) false
Answer: a
Clarification: As per the definition of this machine. The shaper is a reciprocating machine which works only in forward stroke.
3. In shaper, cutting speed is expressed only in ______ stroke.
a) forward
b) return
c) both forward and return
d) none of the mentioned
Answer: a
Clarification: Only in forward stroke, cutting speed is expressed because only in forward stroke useful work is done.
4. What is the unit of cutting speed?
a) meter/minute
b) meter2 /minute
c) meter
d) none of the mentioned
Answer: a
Clarification: Cutting speed is simply a speed. So its unit should be the unit of time. Here, meter/minute is more appropriate unit for cutting speed.
5. Calculation of cutting speed is quite difficult in shaper compare to others.
a) true
b) false
Answer: a
Clarification: It is quite difficult to calculate cutting speed as we have to measure the time required by the cutting stroke.
6. Cutting speed= (length of the cutting stroke) / (time required by the cutting stroke).
a) true
b) false
Answer: a
Clarification: It is the formula for calculating the cutting speed.It may be expressed as length (distance) / time.
7. If n=number of strokes of the ram per minute or rpm of the bull wheel, l=length of the cutting stroke in mm, m= the ratio between return time to cutting time, then find the formula for cutting stroke.
a) n*l*m / 100
b) n*l*(m+1) / 100
c) (l*m) / (n*100)
d) none of the mentioned
Answer: b
Clarification: (n*l* (m+1)) – It is the right formula for calculating the cutting speed.
8. Feed is always given when the tool is cutting the metal.
a) true
b) false
Answer: b
Clarification: This is false. The feed is always given when the tool is not cutting the metal.
9. The feed is always given at the ______ of the return stroke.
a) starting
b) end
c) both at the starting and at the end
d) none of the mentioned
Answer: b
Clarification: It is always given at the end of the return stroke because only in the forward stroke useful work is done.
10. Feed is expressed in _______
a) mm
b) mm/minute
c) minute
d) none of the mentioned
Answer: a
Clarification: It is expressed in mm. Feed is simply a distance so it unit should be the unit of distance.
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