Unit - 1.pptx

1. ME6005
PROCESS PLANNING
AND COST
ESTIMATION

2. • UNIT I INTRODUCTION TO PROCESS PLANNING
• UNIT II PROCESS PLANNING ACTIVITIES
• UNIT III INTRODUCTION TO COST ESTIMATION
• UNIT IV PRODUCTION COST ESTIMATION
• UNIT V MACHINING TIME CALCULATION

4. Design the
product
Manufacturing
Process
planning
Stages

10. Computer Aided Process Planning

11. Retrieval (or variant) CAPP System

14. Selection of Process planning system
Major factors to be considered while selecting the
best process planning system are:
i. General Environment
ii. Organisational Structure
iii. Technical Expertise
iv. Needs and Objectives of the company

15. DRAWING INTERPRETATION

16. The following information can be obtained from the
interpretation of an engineering drawing:
i. Material of the product
ii. Number of parts to be produced
iii. Weight of the component
iv. Dimensions of the parts
v. Dimensional and geometric tolerances
vi. Size and Accuracy

17. TYPES OF DRAWINGS

18. 1)DETAIL DRAWINGS

19. 1.1) SINGLE –PART DRAWINGS

20. 1.2) COLLECTIVE SINGLE –PART
DRAWINGS

21. 2) ASSEMBLY DRAWINGS

22. 2.1) SINGLE –PART ASSEMBLY
DRAWINGS

23. 2.2) COLLECTIVE ASSEMBLY DRAWINGS

25. INFORMATION IN THE DRAWING SHEET
REQUIRED FOR PROCESS PLANNING
• DIMENSIONS

26. • MATERIAL SPECIFICATION
• SPECIAL MATERIAL TREATMENTS

27. • TOLERENCES, LIMITS AND FITS

28. • SURFACE FINISH

30. Material Selection Process

31. Material Evaluation Method
1. Shape or Geometry Consideration
2. Material Property Requirements
3. Manufacturing Considerations

32. Shape or Geometry Consideration
Some of the important shape or Geometry considerations are:
• Relative size
• Complexity
• Dimensional Tolerance
• Surface Finish
• Allowances
• Design for Assembly
• Design for Manufacturability

33. Some raw materials forms for common manufacturing processes

34. Material Property Requirements
i. Mechanical Properties
ii. Physical Properties
iii. Service Environment
Manufacturing Considerations
• Standard Components
• Ease of Manufacture
• Quantity and rate of components
• Minimum and Maximum
• Level of Quality
• QA and Inspection Requirements
• Ease of Assembly

36. Process Selection
Method

41. Factors considered for machine
selection

48. Steps in Machine Selection

49. Factors in tooling selection
• Manufacturing practice
• Manufacturing process
• Machine tool characteristics
• Capability
• Processing time
• Cutting tool availability

53. Operating requirements for tool
selection
• Workpiece material
• Operation
• Part geometry
• Tooling data

56. Factors affecting tooling performance
• Cutting tool materials
• Cutting tool geometry
• Cutting fluids