solved questions

SOLVED QUESTIONS

1. List and explain G and M code for turning and milling operations.

[June '09]

Refer chapter 5.5 on Page 5.11 for G codes and chapter 5.6 on Page 5.15 for M codes.

2. How is manual programming of a NC machine done?

[Dec '05 & May'15]

Refer chapter 5.9 on Page 5.19.

3. With a suitable example, explain the part programming procedure.

[Nov'17]

Refer chapter 5.9.1 on Page 5.20.

4. Explain the various steps to be followed while developing CNC part programs.

Refer chapter 5.9.3 on Page 5.24.

5. Explain the following terms with reference to CNC machines.

(1) Tool length compensation.

Refer chapter 5.9.6.2 on Page 5.27.

 [Dec '06, May'13 & May'14 ̧

(2) Cutter radius compensation.

[Dec '11]

Refer chapter 5.9.6.3 on Page 5.28.

6. Explain the following in CNC machining:

(1) Linear interpolation

[Dec '10 & May'13]

Refer chapter 5.9.8.2 on Page 5.30.

(2) Circular interpolation

[Dec '10]

Refer chapter 5.9.8.3 on Page 5.30.

(3) Cubic interpolation.

[Dec'10]

Refer chapter 5.9.8.4 on Page 5.31.

7. Explain the following with respect to manual part programming:

(1) M codes and G codes

Refer chapters 5.5 & 5.6 on Pages 5.11 & 5.15 respectively.

(2) Program sheet

Refer chapters 5.8 on Page 5.18.

(3) Canned cycle

Refer chapter 5.12 on Page 5.85.

(4) Coordinate system.

Refer chapter 5.1 on Page 5.1.

8. Write short notes on APT language.

[Dec '05 & Apr'18]

Refer chapter 5.18 on Page 5.99.

9. Explain APT geometry and motion statements.

[Dec '06]

Refer Page 5.18.1 for APT geometry on Page 5.99.

10. Explain the various types of statements used in APT language with suitable examples.

[Nov '15]

Refer chapter 5.18.1 on Page 5.99.