1

AMEM 405 slide 1

Manufacturing Processes with theAid of CAD/CAM Systems

AMEM 405

Dr. Sotiris Omirou

AMEM 405 slide 2

CAD/CAM - Definitions

CAD stands for Computer Aided Designing and CAM stands forComputer Aided Manufacturing. The combined CAD/CAM is the technology concerned with the use of computers to perform product designing and manufacturing operations.

2

AMEM 405 slide 3

CADProgram

CAMProgram

CNCMachine

DXF File NC File

• Geometry of part is created (3D or 2D; surface or solid)

Computer Aided Design

• Program the part with G/M-codes

Computer Aided Manufacturing

• Produce the part

•Milling

•Lathe

•Electric Discharge

Computer Numerical Control

Structure of a CAD/CAM system

AMEM 405 slide 4

The functions of CAM programs

CAMCAMCAMCAMprogramprogramprogramprogram

NC codesNC codesNC codesNC codes

CAM programs define:CAM programs define:CAM programs define:CAM programs define:• method of machining• feature/shape to machine• tool used for machining• path of the tool

Programs in NC/CNC code for the machining process

3

AMEM 405 slide 5

Review of Machining Operations

- Milling

- Turning

AMEM 405 slide 6

4

AMEM 405 slide 7

AMEM 405 slide 8

MILLING

5

AMEM 405 slide 9Mill Bits

graphics from McMaster Carr online catalog: www.mcmaster.com

AMEM 405 slide 10

Milling Tools and Tool Inserts

6

AMEM 405 slide 11

Drills and Reamers

AMEM 405 slide 12

Milling Operations• Facing: removes material across the top surface• Contouring: removes material to a specified depth

along a CAD geometry• Drilling: uses points identified on a CAD layer to

drill holes to a specified depth• Pocketing: removes all material within the outline

of a CAD geometry• Surface of Revolution: removes all material within

a surface generated by revolving geometry about the X or Y axis

7

AMEM 405 slide 13

AMEM 405 slide 14

8

AMEM 405 slide 15

33--DimensinalDimensinal surface surface milling:milling:

AMEM 405 slide 16

CNC Machining Centers

9

AMEM 405 slide 17

Vertical Milling Machining center

Tool Post

AMEM 405 slide 18

A Milling Machining center in operation

10

AMEM 405 slide 19

Automatic Tool Change on aMilling Machining center

AMEM 405 slide 20TURNING

11

AMEM 405 slide 21

TURNING

AMEM 405 slide 22Turning Operations in figures

12

AMEM 405 slide 23CNC Lathe

AMEM 405 slide 24

Application Example (CNC Turning)

13

AMEM 405 slide 25

AMEM 405 slide 26