© 2011 by dakpart

DAKPEDIA

ALL ABOUT LEAF SPRING

LEAF SPRING PRODUCTION PROCESS

  • Shearing of flat bar

  • Center hole punching

  • Drilling

  • Eye forming

  • Wrapper forming

  • Diamond cutting

  • End trimming

  • Width cutting

  • End tapering

  • End punching

  • End grooving

  • End bending

  • End forging

  • Eye grinding

  • Center hole punching

  • Center hole drilling

  • Center hole nibbing

  • Parabolic forming

  • Straightening

  • Heating

  • Chamber forming

  • Hardening

  • Quenching

  • Tempering

  • Shot peening

  • Stress peening

  • Primary painting

  • Eye reaming

  • Eye boring

  • Bush insertion

  • Bush reaming

  • Presetting

  • Load testing

  • Finish painting

  • Marking

  • Packing

LEAF SPRING TYPE

  • Elliptic leaf spring

  • Semi elliptic leaf spring

  • Three quarter elliptic leaf spring

  • Quarter elliptic leaf spring

  • Transverse leaf spring

TRADITIONAL LEAF SPRING TYPE

Double eye leaf spring

Open eye leaf spring

Hook end leaf spring

Flat end leaf spring

Radius end leaf spring

Conventional leaf spring

Eye mounted leaf spring

Taper enden slide leaf spring

Progressive leaf spring

Trailer leaf spring

PARABOLIC LEAF SPRING TYPE

High stress parabolic leaf spring

Full parabolic leaf spring

Tandem parabolic leaf spring

Single trailer parabolic leaf spring

Hockey stick parabolic leaf spring

Walking stick parabolic leaf spring

Z type parabolic leaf spring

LEAF SPRING COMPONENTS

1. Spring hanger

2. Spring eye with bush

3. Spring bolts & locknuts

4. Spring leaves

5. Center bolt

6. Rebound clips

7. Spring bolts & locknuts

8. Spring shackles

9. Rear hanger

10. Camber

LEAF SPRING EYE TYPE

  1. Normal eye rolling

  2. Downturned berlin eye

  3. Half wrapper leaf

  4. Berlin eye

  5. Half berlin wrapper leaf

  6. Full wrapper leaf

  7. Downturned normal eye

  8. Quarter wrapper leaf

  9. Full berlin wrapper leaf

HOW TO MEASURE LEAF SPRING

You can measure the lenght from the center line of eye following the curve of the main leaf as shown by A and B

You can measure the free arch as shown by C

You can measure the packing thickness as shown by D

You can measure the eye to eye free length as shown by E

HOW TO MEASURE BUSHING

A = Outside diameter

B = Lenght 

C = Total lenght 

D = Inside diameter

E = Leaf spring eye diameter

HOW TO MEASURE U BOLT

A = Diameter

B = Widht 

C = Length

Round bend   

Semi round bend   

Square bend   

HOW TO MEASURE WEIGHT

 a(Length) x b(Widht) x h(Thickness) x Density of Iron (7,85) / 1.000.000

a,b and h should be in mm and the result will show you the weight in Kg