There are two basic categories of machine adjustments. They are:
- set-up adjustments
- fine-tuning adjustments
SET-UP ADJUSTMENTS are made to establish the speed and force (function) of the machine.
FINE-TUNING ADJUSTMENTS are made to balance the relationships of the machine systems.
There are two SET-UP ADJUSTMENTS on a machine. They are:
- stroke length
- spring compression
The stroke length of a machine is determined by the distance of travel of the armature bar from it's highest point to it's lowest while the machine is running.
Spring compression is the term used to describe the interaction and combined effect of main spring return force and timing spring resistance.
MAIN SPRING RETURN FORCE is made up of a combination of three factors. They are:
main spring dimensions, main spring angle of deflection, and main spring tension.
TIMING SPRING RESISTANCE is established by the dimensions of the timing spring.
There are two FINE-TUNING ADJUSTMENTS on a machine. They are:
Set-up adjustments must be made with consideration of the effect those changes will have on the interactions of the machine's mechanical, magnetic and electrical systems. If the machine's systems are so far out of synchronization that fine-tuning adjustments cannot bring the three systems into balance, then changes must be made to set-up adjustments or parts must be changed to get the machine to function properly.
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