Metal CuttingMetal Cutting

By Martinus Bagus Wicaksono

OutlineOutlineConventional Machine toolCNC machine toolDesigning a mechanical system

Conventional Machine Conventional Machine ToolTool

Milling Machine

Used to create: Flat surface, holes, complex shape

Turning Machine

Used to create: Cylindrical shape

Conventional Machine Conventional Machine ToolTool

Drilling Machine

Used to create: Holes

Welding Machine

Used to create: Fix joint between 2 metals

MillingMillingMilling is a metal removing,

using a rotating cutter with one or more cutting teeth.

The cutting tool is endmill cutter

Cutting SpeedCutting 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

TurningTurningA 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 setupSome Products

DrillingDrillingDrilling is a cutting process

that uses a drill bit to cut or enlarge a hole in solid materials

Cutting tool is a twist drill

WeldingWeldingArc welding is a process

that uses an electric arc to join the metals being welded.

It will be a fix jointThere are 5 types of

joint

CNC Machine ToolCNC Machine ToolCNC MillingUsed to cut a workpiece which has irregular contour or complex shapeUsed to create a product that need a precise dimension or high precision

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

CNC ProgrammingCNC ProgrammingProgramming language which is used to control the machine:HeidenhainSiemensFanucISO

ISO ProgramISO ProgramUsing common languageCan be used in any kind of CNC machineG code and M codeG00 linear movement in rapid traverseG01 linear movement with feedrateG02circular movement (clockwise

direction)G03circular movement (counter

clockwise)M30end program

Designing a Mechanical Designing a Mechanical SystemSystemThe work flow:

◦Design or determine the type of system

◦Part identification◦Material identification◦Work preparation

Part IdentificationPart Identification

Part quantityType of partMaterial identification

Work preparationWork preparationConsists of:Machine tool selection

◦Cutting tool◦Sequence flow◦Time estimation

Material preparation

Real Machining activity to create the product