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BACHELOR OF TECHNOLOGY INMECHANICAL ENGINEERING (COMPUTER

INTEGRATED MANUFACTURING)

Term-End Examination

june, 2409

BME-011 : COMPUTER AIDED PROCESSPLANNING

Time : 3 hours Maxhnum Marks : 70

Note : Attempt any fioe questions. Ary dsta not supplied canbe assumed suitablv.

(u) Make a block diagram of mater ial

, requirement planning system. Describe the

role of computer in production planning

with the help of above diagram

(b) Briefly discuss the various approaches

avai lable f or computer aided process

planning.

(u) Describe the generative system of CAPP.How expert system or knowledge basedsystem is used to enhance the capability ofthis system ?

1 .

2.

BME-0L1 P.T.O.

3 .

(b) A forming tool machining at 40 m/ ninute

requires re-sharpening after 40 minutes.

What should be the cutting speed for

prolonging tool life to 80 minutes ? Assume

n : 0 .L5.

(u) With the help of a suitable block diagram

describe the data base system for

machinability and part print analysis.

(b) Explain the principles to be used for

selecting. cutting tools in the case of CNCturning centre.

(u) What is a pocket with respect to process

planning ? Explain the simple method that

can be used for pocket identification.c t {

(b) List the factors which dictate the optimum

sequence for a machining operation.

(a) What do you understand from the process

capabili$ of a manufacturing process ? Listdifferent parameters to determine theprocess capability.

4 .

J .

2BME-011.

(b) Assembly of a number of parts into

final product is shown in the figure 1,,

parts L, 2, 3, 4 and 5 have dimensions

A13, BlB, c1:, D* j and ElE. (A, B, c,

D and E are nominal dimension) Compute

the tolerance on the Dimension'F'.

l+Eted

Figure 1

(u) Describe computer aided process planning

with the help of suitable block diagram.

Name at least eight packages of CAPP

available so far.

(b) List at least six criteria for selecting a CAPP

system for casting processes.

6 .

F-B t b +;<-q -r c-+l+-D I d+l

l<-Aia --+l

BME-011 P.T.O.

7. (u) Briefly describe four different aspects ofmachine tool selection in machiningprocesses.

(b) Discuss the report generation module of theCAPP system. Briefly describe at least threeformat of the process plan under reportgeneration module.

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BME-01L