1. By Martinus Bagus Wicaksono
Metal Cutting
By Martinus Bagus Wicaksono

2. Outline Conventional Machine tool CNC machine tool
Designing a mechanical system

3. Conventional Machine Tool
Milling Machine
Used to create:
Flat surface, holes, complex shape
Turning Machine
Used to create:
Cylindrical shape

4. Conventional Machine Tool
Drilling Machine
Used to create:
Holes
Welding Machine
Used to create:
Fix joint between 2 metals

5. Milling
Milling is a metal removing, using a rotating cutter with one or more cutting teeth.
The cutting tool is endmill cutter

6. Cutting Speed Where  N : RPM of the cutter
CS : Linear Cutting Speed of the material in
m/min (see table)
d : Diameter of cutter in mm

7. Turning
A turning is a machine tool which turns cylindrical material, touches a cutting tool to it, and cuts the material.
Types of cutting tool
Side tool
Cutting off tool
Boring tool
Cutting tool setup
Some Products

8. Drilling
Drilling is a cutting process that uses a drill bit to cut or enlarge a hole in solid materials
Cutting tool is a twist drill

9. Welding
Arc welding is a process that uses an electric arc to join the metals being welded.
It will be a fix joint
There are 5 types of joint

10. CNC Machine Tool CNC Milling
Used to cut a workpiece which has irregular contour or complex shape
Used to create a product that need a precise dimension or high precision

11. CNC Turning
Used to cut a cylindrical workpiece which has irregular contour or complex shape precisely.
Used to produce product in a large quantity.

12. CNC Programming
Programming language which is used to control the machine:
Heidenhain
Siemens
Fanuc
ISO

13. ISO Program Using common language
Can be used in any kind of CNC machine
G code and M code
G00  linear movement in rapid traverse
G01 linear movement with feedrate
G02circular movement (clockwise direction)
G03circular movement (counter clockwise)
M30end program

14. Designing a Mechanical System
The work flow:
Design or determine the type of system
Part identification
Material identification
Work preparation

15. Part Identification
Part quantity
Type of part
Material identification

16. Work preparation Consists of: Machine tool selection
Cutting tool
Sequence flow
Time estimation
Material preparation
Real Machining activity to create the product