ST.MOTHER THERESA ENGINEERING COLLEGE, VAGAIKULAMDEPARTMENT OF MECHANICAL ENGINEERING

ME2402- COMPUTER INTEGRATED MANUFACTURING(REGULATION 2008)

IAT-IIIANSWER KEY

PART-A

1. It may be defined as a system for utilizing data from the shop floor as well as data processing files to maintain and communicate status information on shop orders and work centre’s.2. The release of production orders to the factory, monitoring and controlling the progress of the orders through the various work centers, acquiring information on the status of the orders.3. A dedicated FMS is designed to produce a limited variety of part configurations. The random order FMS is more flexible than the dedicated FMS.4. Workstation/processing station control, distribution of control instructions to workstations, production control, material handling system control.5. The primary handling systems establishes the basic layout of the FMS and is responsible for moving work-parts between workstations in the systems. The secondary handling system transfer work-parts from the primary system to the machine tool or other processing stations.6. In online system the data are entered directly into the plant computer system and are immediately available to the order progress module In an off-line system, the data are collected temporarily in a storage device or a stand alone computer system to be entered and processed by plant computer in a batch mode.7. PPC may be defined as the direction and coordination of a firm material and physical facilities towards the attainment of pre-specified production of goods, with highest production efficiency.8. Production planning may be defined as the determination, acquisition and arrangement of all facilities necessary for future production of products.9. Aggregate planning is concerned with determining the quantity and timing of production for the intermediate future ahead, setting employment, inventory, and subcontracting.10. MRP is a computational technique that converts the master schedule for final products into a detailed schedule for the raw materials and parts used in the final products.

PART-B11.(a) (i) Introduction (2marks) Bar code (2marks) Bar code symbols (2marks) Bar code scanner (2marks) (ii) Inline layout (2marks) Loop layout (2marks) Ladder layout (2marks) Open field layout (2marks)(b) (i) Data acquisition system (2marks)

Data logging systems (2marks)

Multilevel scanning (4marks) (ii) Primary handling system (4marks) Secondary handling system (4marks)

12. (a)(i) Scheduling (1marks) Dispatching (1marks) Follow up (1marks)

Providing actual output data for capacity control purposes (1marks) Providing quantity by location by shop order for work in process inventory and accounting

purposes. (2marks)Providing measurement of efficiency, utilization and productivity of manpower machines.

(2marks) (ii) Each point carries 1 mark for functions of Material handling systems.

(b)(i) Each point carries 1 markWorkstation/processing station controlDistribution of control instructions to workstationsProduction controlMaterial handling system controlWorkpiece monitoringTool controlQuality controlFailure diagnosis

(ii) Machining, Assembly, Sheet metal press working, forging, plastic injection moulding, Welding,(4marks)Advantages (2 marks), disadvantages (2marks)

13. (a) Order release (5marks) , Order scheduling (6marks), order progress (5marks) (b) (i) Drawing (4marks) , Explanation (4marks) (ii) Definition (3marks) Types (3marks) Objectives (2marks).14 (a) Master production schedule (4marks) Bill of materials file (4marks) inventory record file (4marks)

Concept (4marks) (b) (i) Each point carry 1 mark

General design specifications. Total anticipated quantity and the rate of production

Assembly or layout drawingsList of the proposed sub assembliesDetailed drawings and a bill of materialMachine tool and equipment requirementsPackagingOperation analysis

15. (a) ordering costs (4marks), Carrying costs (4marks), Shortage costs (4marks), Purchase costs(4marks) (b) Definition (3marks), Objectives (8marks), Concept (5marks)