Padmashree Dr DY Patil Vidyapeeth 2007 B.E Computer Science Production Technology - Question Paper

a) How DNC is various from CNC ? (3)

b) Designate axes for 4-axis milling machine (3)

c) elaborate thread gauges? How do you check threads using

them ? (3)

d) How machine vision system is used in Metrology (3)

e) define Arithmetic avg. and RMS avg. of surface

roughness. (3)

2. a) What is a machining center? define its important features.

(7)

b) discuss Tool length compensation and Tool radius

compensation in NC part programming. (8)

3. a) elaborate the common Robot configuration? discuss them

briefly. (7)

b) What is FMS? explain its advantages. (8)

4. Write manual part program for turning the component shown

in Fig.1 (for only finish cutting). (15)

II Year B.E./B.Tech Degree exam

PRODUCTION TECHNOLOGY

Mechanical Engineering

Time : 3 hours Maximum : 75 Marks

ques. one is compulsory

ans any 4 from ques. two to 8

All ques. carry equal marks

20

Fig . 1

5. a) What is Taylor’s principle as applied to design of limit

gauges? discuss how do you apply for design of GO & NO

GO plug gauge. (8)

b) provide screw thread terminology on a sketch and discuss any

method for finding the pitch of the thread. (7)

6. a) discuss any 1 gear tooth profile measuring technique.(8)

b) What is squarness measurement and discuss. (7)

7. a) What is the working principle of pneumatic comparator?

Briefly enumerate the advantages of differential pneumatic

comparator. (8)

b) discuss how sine bar is used in measurement of tapper angle.

(7)

8. a) define any 1 method of measuring surface roughness.

(7)

b) define with sketches, how would you check (i) parallelism

of main spindle of lathe to its saddle movement, (ii) actual

running of internal taper of main spindle of milling machine.
(8)

Earning:   Approval pending.