Manufacturing process Electric motor B. S. Kim , J. Y. Kim , T. M. Kim , K. U. Min D. H. Park , D.J. Bang , S.H. Yoon

↙ ↘ Table of contents W H Y ? H O W ? Why engineer used the manufacturing process? ↙ H O W ? How are the manufacturing process conducting ? ↘

Parts of manufacturing Rotator Fan Fan cover Support Stator Al cover Bolt

Parts of manufacturing CNC Casting Injection Forging Drawing

CNC Turning & Grinding process Turning process

CNC Turning & Grinding process Characteristic Advantage - Low size allowance - Make various shape Weakness Low production speed High unit cost of production

Forging & Tapping process Heating

Forging & Tapping process Cooling Tapping

Forging & Tapping process Characteristic Advantage - More detailed than sand mold casting - Process the iron rapidly - When mass producing → economical Weakness Die is very expensive Make simple shape only

Die casting process Cooling Injection Pour molten metal Close the mold

Die casting process Characteristic Advantage Weakness - Low cost, high production speed - Make complicated shape - The size is exact – quality is high Weakness Using the specific machine Die is very expensive

Injection molding process Cooling Injection Pour plastic powder Close the mold

Injection molding process Characteristic Advantage - Fast, using mass production - Stable quality - Can make complex shape Weakness Using the specific machine Die is very expensive

Pull through the material Wire drawing process Pull through the material Sprinkle the oil Fit through the die

Wire drawing process Characteristic Advantage Weakness - More detail than rolling process - Make very thin wire - Second process needless Weakness Die is very expensive A by-product(chip) happens

Assembly1

Assembly2

Assembly3

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