Clutches Basic defination of clutches is The mechanical
Clutches Basic defination of clutches is, The mechanical device which used to connect or disconnect driving shaft to the driven shaft, at the will of operator. . . In automobiles, clutches are ysed for changing the gears, also for temporarily stop the vehicle. .
CLUTCHES
TWO MAIN TYPES OF CLUTCHES • POSITIVE CLUTCHES • FRICTION CLUTCHES
Gear Tooth Shaped Jaw Clutch
Advantages of positive clutches • No heat is generated during the engagement. • Requires little maintenace. Disadvantages of positive clutches • They can’t be engaged at high speed • Engagement of any speed is accompanied by shock & noise. Applications • used in m/c tools, power presses, punches, etc.
Friction Clutch
Friction clutch
Advantages of friction clutch • Frequent engagement and disengagement is possible. • They are easy to operate. Disadvantages of friction clutch • They do’nt provide positive engagement • Due to slip, the heat is generated at contacting surfaces during the engagement. Applications • Commonly used in automobiles
Classification of Friction clutch
CLASSIFICATION DEPENDING UPON “ THE NUMBER OF DRIVEN PLATE USED” Single plate clutches This clutch consist only one driven plate. Multi-plate clutches This clutch consist more than one driven plate.
Single Plate Clutch
Multiplate clutch
CLASSIFICATION DEPENDING UPON “THE USE OF COOLING OIL” Wet clutches If the cooling oil is used for heat dissipation, then the clutch is called ‘wet clutch’ Dry clutches If the coolilg oil is not used for heat dissipation, then the clutch is called ‘dry clutch’
Wet clutch
Cone Clutch
Cone clutch
Cone clutches The cone clutch consist of a cup keyed to the driving shaft and a cone with friction lining free to slide axially on a spilned driven shaft. Application They are ysed in machine tools
Clutch System In AUDI
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