Yashwantrao Chavan Maharashtra Open University 2006 Certification TML CNC Technology and Programming - Question Paper
Friday, 01 February 2013 11:40Web
TML084/EE/20070819
CNC Technology and Programming
Time : 180 minutes Marks : 100
Instructions for the students :
1. All ques. are compulsory.
2. “Long ans kind ques. (LAQ)” is a supply kind ques. of 20 marks,
which require typical ans of about 60-80 lines in about 32-40 minutes.
3. “Short ans kind ques. (SAQ)” is a supply kind ques. of five marks,
which require typical ans of about 15-20 lines in about 08-10 minutes.
4. Use of non-programmable kind of scientific calculator is allowed.
5. Draw neat diagrams wherever necessary.
6. presume suitable data if necessary.
Long ans kind ques. (LAQ’s)
1. What is Numerical control machine ? discuss the classification of
N.C. machine. elaborate the basic components of N.C. Machine ?
2. (a) What is the meaning of the subsequent N.C. words used in word
address format – J, G, X, Y, Z, F, S, T, M, EOB.
(b) discuss Linear Interpolation Function.
3. (a) Write a manual part program for the component shown in
Figure 1
4 (a) discuss the various statements used in APT programme.
(b) What is your opinion about future of numerical control.
Short ans kind ques. (SAQ’s)
5. What is the difference ranging from “incremental and point to point”
system ?
6. Write a note on ‘Subroutines’. 5
7. discuss the features of work holding device used on CNC. 5
8. elaborate the points to be considered in selection of tool for CNC
lathe ?
Earning: Approval pending. |