1. IE458CAM Computer Aided Manufacturing Dr. Abdulrahman Al-Ahmari Industrial Engineering Department King Saud University

2. Dr A. M. A. Al-Ahmari2 Contents Part1: Introduction Part2: Process Engineering. Part3: Group Technology & Cellular Manufacturing. Part4: Process Planning Part5: Industrial Robots.

3. Dr A. M. A. Al-Ahmari3 Part-1 Introduction

4. Introduction What is CAM? The effective utilization of computers in manufacturing. CAM is the use of computer systems to plan, manage and control the operations of manufacturing plant through either direct or indirect computer interface with the plant’s production resources.

5. From CAM definition, the application of CAM falls into two broad categories: 1.Computer monitoring and control. ComputerProcess Process data Control signals ComputerProcess Process data Direct application - device monitoring and control, NC, PLC, manufacturing cell.

6. 2.Manufacturing support application. Control signals Computer Mfg operations Process data Indirect applications - manufacturing support - planning, MRP, process planning, scheduling, inventory, shop floor control.

7. The Product Cycle and CAD/CAM In order to establish the scope and definition of CAM in an engineering environment and identify existing and future related tools, a study of a typical product cycle is necessary. The following Figure shows a flowchart of such a cycle.

8. The Manufacturing Process The Design Process Synthesis Analysis The CAD Process The CAM Process Design needs Design definitions, specifications, and requirements Collecting relevant design information and feasibility study Design conceptualization Design modeling and simulation Design analysis Design optimization Design evaluation Design documentation and communication Process planning Order materials Design and procurement of new tools Production planning NC, CNC, DNC programming Production Quality control Packaging Marketing Shipping

9. Process planning Order materials Design and procurement of new tools Production planning NC, CNC, DNC programming Production Quality control Packaging The CAM Process

10. Implementation of a Typical CAM Process on a CAD/CAM system Geometric model Interface algorithms Process planning Inspection Assembly Packaging To shipping and marketing NC programs

11. Manufacturing phaseRequired CAM tools Process planningCAPP techniques; cost analysis; material and tooling specification. Part programmingNC programming InspectionCAQ; and Inspection software AssemblyRobotics simulation and programming CAM Tools Required to Support the Design Process

12. Definitions of CAM Tools Based on Their Constituents Networking concepts Mfg tools CAD CAM tools

13. Definition of CAM Tools Based on Their Implementation in a Manufacturing Environment Mfg tools + Computer Hardware (control unit; display terminals; I/O devices Software (CAD; NC; MRP; CAPP…) = CAM tools Networking

14. Geometric modeling of conceptual design Is design evaluation Possible with available Standard software? Design testing And evaluation Is final design Applicable? Drafting Documentation Process planning Are there manufacturing discrepancies in CAD databases? NC programming Machining Inspection Assembly Develop customized programs and packages No Yes Geometric modeling and graphics package Design package Programming package No CAPP package NC package Inspection And Robotics package Typical Utilization of CAD/CAM Systems in an Industrial Environment

15. THE HISTORY OF CAM 1950'sNC hardwired relay control APT language for NC 1960'sIndustrial robot Interactive computer graphics 1970'sCNC computer DNC/FMS CAD/CAM PLC device & cell control Computer vision 3-D CAD 1980's Solid modeling Factory networking MAP/TOP CIM Concurrent engineering 1990'sIntelligent Mfg System

16. BENEFITS OF CAM 90% Inventory reduction 50% more efficient use of factory & warehouse space 75% reduction in machine setup time - item setup (re-measurement, repositioning, and replacement of cutting tools,..) Does not change product specific set-up. 25% reduction in direct and indirect labor 90% reduction in lead time