Diploma Computer Integrated Manufacturing Important Questions Unit 2

Diploma Computer Integrated Manufacturing Important Questions

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We have added Diploma Computer Integrated Manufacturing Important Questions – Unit 2 for the diploma mechanical III year / V Semester as PDF 

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Diploma Computer Integrated Manufacturing Important Questions

Unit Name : 2. Computer Aided Manufacturing

Scheme : N Scheme (New Pattern)

1. Define CAM.

Computer Aided Manufacturing (CAM) may be defined as the effective use of computer technology in manufacturing, planning, and control.

 

2. List out the functions of CAM in manufacturing planning.

·        Computer Aided Process Planning (CAPP)

·        Computer assisted NC part programming

·        Computerized machinability data system

·        Development of work standard

·        Cost estimating

·        Production and inventory planning

·        Computer aided line balancing

 

3.  List out the functions of CAM in manufacturing control.

·        Process monitoring and control

·        Quality control

·        Shop floor control

·        Inventory control

 

4. List out the benefits of CAM.

1) Greater flexibility in design

2) Increased productivity

3) Greater flexibility in operations

4) Shorter lead time

5) Improved reliability

6) Reduced maintenance

7) Reduced scrap and rework

8) Better management control

 

5. Define CIM.

Computer integrated manufacturing (CIM) includes all of the engineering functions of CAD/CAM and business functions that are related to manufacturing.

 

6. What is the concept of CIM?

The CIM concept is that all of the firm’s operations related to manufacturing are incorporated in an integrated computer system to assist, improve and automate the operations.

 

7. What is CIM wheel?

CIM wheel shows the components of a CIM system.

 

8. List out the benefits of CIM.

1) Increased machine utilization

2) Reduced direct and indirect labour.

3) Reduced manufacturing lead-time.

4) Lower in-process inventory.

5) Greater scheduling flexibility.

6) Reduced scrap and rework.

7) Increased factory capacity.

8) Safer working environment.

 

9.What is integrated CAD/CAM?

The product design and manufacturing functions are integrated by using CAD/CAM technology. This is termed as integrated CAD/CAM.

 

10. What is Group Technology (GT)?

Group Technology (GT) is a manufacturing philosophy used to reduce the overall production cost by grouping the parts. The grouping is based on similarities in design or manufacturing process.

 

11. What is part family?

A part family is a group of similar parts. They are similar in geometric shape and size, or similar in processing steps needed for manufacture

 

12. List out the design attributes used in GT.

1) Basic external shape

2) Basic internal shape

3) Material type

4) Part functions

5) Major dimensions

6) Minor dimensions

7) Tolerances

8) Surface finish

 

13. List out the manufacturing attributes used in GT.

1) Major processes

2) Minor operations

3) Operation sequence

4) Major dimension

5) Surface finish

6) Machine tool

7) Fixture required

8) Cutting tools

 

14.What are the applications of parts classification and coding?

1) Design retrieval

2) Machine cell design

3) Automated process planning

 

15.What are the coding structures used in GT?

1) Hierarchical structure or Monocode structure

2) Chain type structure or Polycode structure

3) Hybrid structure or Mixed mode structure

 

16.List out the parts classifications and coding systems.

1) Opitz system

2) MICLASS system

3) The CODE system

4) DCLASS system

5) COFORM system

6) The KK–3 system

 

17.List out the benefits of Group Technology.

1) Retrieval of existing design from the database is easy.

2) It helps in design standardization.

3) The production rate is increased.

4) The inventory and work–in–process can be reduced.

5) The material handling and movement is reduced.

 

18.What is process planning?

Process planning involves determining the most appropriate manufacturing and assembly processes and the sequence in which they should be done to produce a product as per the specifications.

 

19.What is process planning?

Process planning involves determining the most appropriate manufacturing and assembly processes and the sequence in which they should be done to produce a product as per the specifications.

 

20.What are the requirements for process planning?

1) Annual demand of the product or batch size.

2) The list of parts in the product.

3) Available stock sizes.

4) Details of available equipments.

5) Tools, dies, moulds, fixtures and gauges requirements.

6) Accuracy and surface finish requirements.

 

21.What is CAPP?

Computer Aided Process Planning (CAPP) is a means to automatically develop the process plan with the help of computer programs.

 

22.What is the difference between variant approach and generative approach of CAPP?

Variant approach uses a Group Technology (GT) code to select appropriate process plan from the existing master process plans. It edits the master plan to suit the requirement of the part.  In generative approach, a process plan is created from the beginning for each part without human intervention.

 

23. List out the benefits of CAPP.

1) More logical and optimal process plans.

2) Lower manufacturing costs and higher product quality.

3) The productivity of process planners is increased.

4) The lead-time for process planning is reduced.

5) Computer prepared route sheets are neat and easy to read.

 

24.  What are the objectives of PPC?

1) Ensure safe and economical production process

2) Effectively utilize the resources

3) Ensure proper delivery of products

4) Ensure optimum inventory

5) Reduce the production time

6) Improve the quality of product

7) Control the wastage of raw material

8) Reduce the production cost

Diploma Computer Integrated Manufacturing Important Questions
Diploma Computer Integrated Manufacturing Important Questions

25.What is master production schedule?

Master production schedule is a very specific schedule of individual products in the aggregate plan. It is a list of products to be manufactured, when they should be completed and delivered and in what quantities.

 

26.What are the objectives of MPS?

1) To make the best use of the resources such as equipment, material and labour.

2) To maintain the inventory as low as possible.

3) To maintain the proper delivery of finished products.

 

27. What is capacity planning?

Capacity planning is concerned with determining the labour and equipment resources needed to meet the current master production schedule as well as the long–term future production requirements of a company.

28.  What is MRP?

A material requirement planning (MRP) is a computational method that converts the master production schedule into a detailed schedule for the raw material and components used in the end products.

 

29.List out the benefits of MRP.

1) Reduction in inventory.

2) Quicker response to changes in demand.

3) Improved customer service.

4) Reduced setup and product changeover costs.

5) Better machine utilization.

 

30. What is MRP-II?

Manufacturing Resource Planning (MRP-II) is a computer based system for planning, scheduling and controlling the materials, resources and supporting activities needed to meet the master production schedule.

 

31.What is shop floor control?

Shop floor control is concerned with the release of production orders, monitoring and controlling the progress of the orders, and collecting current information on the status of the orders.

 

32. Define JIT.

Just-In-Time (JIT) is a philosophy of manufacturing based on planned elimination of all wastes and continuous improvement of productivity.

 

33.What is ERP?

Enterprise Resource Planning (ERP) is one of the MRP-II softwares used for developing an optimum manufacturing solution.

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