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2003 Course Process Planning & Tool Selection

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Total No. of Questions : 12] P1328 [Total No. of Pages : 4 [3764]-180 B.E. (Production & Industrial Engineering) PROCESS PLANNING AND TOOL SELECTION (2003 Course) (411089) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates : 1) 2) Answer 3 questions from Section I and 3 questions from Section II. Answers to the two sections should be written in separate books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Assume suitable data, if necessary. 6) Use of electronic pocket calculator is allowed. SECTION - I Q1) a) Process Engineering is the hub of the organization . Discuss with the help of a material flow in an organization. [8] b) Explain briefly the expertise that a process engineer should have to discharge his duties in process planning. [8] OR Q2) a) List the main responsibilities of product engineer and explain how it is helpful in process planning? [8] b) Where is the process engineer and product engineer located in the organization? Explain with the help of organization chart. [8] Q3) a) What key points should be considered in determining the nature of work to be performed on the work-piece? [8] b) Define and draw commonly used symbols for geometric tolerances. [8] OR Q4) a) What are the two methods of dimensioning? Which method is normally performed and why? [8] b) Explain the part print analysis in detail with respect to general characteristics of the work-piece. [8] P.T.O. Q5) a) Explain with neat sketches geometric control for : i) Long cylinders. ii) Short cylinders. iii) [9] Conical shapes. b) What is the concept of interchangeability and standardisation? And what are causes of work-piece variations. [9] OR Q6) a) What is meant by selective assembly ? What is the basic difference between tolerance stack and limit stack, illustrate with an example? [9] b) Define work-piece control. What are the variables which interfere with work-piece control? Discuss. [9] SECTION - II Q7) a) Explain with a neat flow chart, a machine selection method for a new component. [8] b) Identify and describe the main guidelines that should be applied when considering clamping force. [8] OR Q8) a) What are various factors affecting the machine selection? Explain. [8] b) Analyse the location system provided by following work and/or tool holding devices : [8] i) V-blocks. ii) Centres. iii) Sleeves. Q9) a) How are critical areas on the work-piece generally identified? Distinguish between product critical areas and process critical areas. [8] b) Explain Retrival Computer Aided Process Planning approach and draw general procedure chart of retrival CAPP. [8] OR Q10) a) What is an auxiliary operation? How can supporting operation be distinguished from auxiliary operation? [8] [3764]-180 -2- b ) Explain the need of CAPP. Also discuss the role of expert system in generative Computer Aided Process Planning (CAPP) system. [8] Q11) Prepare a process sheet to machine a bearing housing as shown in Figure 1. which is to be manufactured in batch size of 350. The process sheet must contain manufacturing plan with operation sequence, equipments, tooling, process parameters and sample calculation of operation time. Also draw a proper work-holding device to drill 12 mm hole and 25 mm spot-face. [18] OR [3764]-180 -3- Q 12) Prepare a process sheet to machine a base component as shown in Figure 2. which is to be manufactured in batches of size 600. Analyse the part print carefully and prepare the process sheet containing manufacturing plan with operation sequence, equipments, tooling, process parameters and sample calculation of operation time. [18] rrrr [3764]-180 -4-

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