53233-mt----tool Design

NR

Code No: 53233/MT

M.Tech. – II Semester Regular Examinations, September, 2008 TOOL DESIGN (Design for Manufacturing) Time: 3hours

Max. Marks:60 Answer any FIVE questions All questions carry equal marks ---

1.a) b) 2.

What is meant by the term tool steel? What are the factors affecting heat treating the tool steels? Discuss briefly about Non-Metallic tool materials. What is milling cutter? How are the milling cutters are classified? Discuss the design features of milling cutter?

3.a)

Basic principles of clamping? Give the basic classification of clamps and explain with sketches? b) What is drill bush? Sketch and explain any three types bushes used in jigs?

4.

Discuss about the following? a) Vice fixtures b) Lathe fixtures c) Grinding Fixtures

5.a) b)

Differentiate between cutting die and forming die? Sketch and explain the following: i) Blanking die ii) Compound die iii) Combination die iv) Progressive die

6.a) b)

Sketch and explain single and double action drawing dies? What are the various methods bending? Sketch and explain them?

7.a) b)

Differentiate between blanking and piercing die constructions. Discuss the following in die construction. i) Pilots ii) Strippers iii) Pressure pads iv) Stripper layouts

8.

Write short notes on any three of following a) Determination of shomk size for single point cutting fool b) Properties of fool material c) 3-2-1 location d) Tool steels ^^^