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OPERATING INSTRUCTIONS
RECOMENDATION FOR SPIN DRIVE RPM AND TRANSVERSE SPEED
WHEN GRINDING
SPIN DRIVE RPM
SPIN DRIVE RPM IS VERY IMPORTANT IN ACHIEVING A QUALITY GRIND. USE
CARE IN ESTABLISHING THE SPIN DRIVE RPM, PER THE INSTRUCTIONS BELOW.
Generally, the Spin Drive RPM will be between 180 RPM (45%) and 380
RPM (100%). The speed required to spin a specific reel is dependant on reel
diameter, the number of reel blades, and reel hardness. For all reels, there is
an optimum Spin Speed where there is an AGGRESSIVE, yet smooth grind as
you spin grind the reel. Your objective is to spin grind the reel as aggressively
and as fast as possible while maintaining top quality.
It is recommended to start grinding each reel at a Spin Speed of 200 RPM
(50%) and evaluate the RPM by adjusting higher and lower to optimize the Spin
Speed for that reel. If the Spin Speed is incorrectly set, you can experience two
problems, grinding wheel dressing or grinding wheel resonance. Each of these
problems is explained below.
On some reels, especially small diameter high blade count reels if the Spin
Speed RPM is set too high, the reel can act as a dresser to the grinding wheel.
There can develop what appears to be a very aggressive grind (as if the infeed
has self infed) and then a sudden stop of grinding with no grinding wheel to
reel contact. If this occurs, your Spin Speed was set too high and you effectively
dressed your grinding wheel.
Some reels have a resonant RPM where the reel goes into harmonics with the
grinding wheel and the resonance vibrates the grinder and results in a very bad
grind. By changing the Spin Speed to a higher or lower RPM you will move out
of the resonant range.
After determining the best Spin Speed RPM for a reel, note the RPM on the
"Set-up Chart" in the "NOTES" section. (Set-up chart is located at the back of
this manual) By noting the correct RPM, you will avoid evaluating the Spin
Speed the next time you grind the reel.
TRAVERSE DRIVE RPM
The Traverse Speed potentiometer is adjustable from approximately 5
feet per minute [1.5 meters per minute] to 20 feet per minute (6 meters
per minute). It is recommended to grind between 15 and 20 feet per
minute (4 and 6 meters per minute).
Grinding at a slower traverse speed, 10 feet per minute (3 meters per
minute) as an example, will give a better finish but will extend the grind
cycle time. Grind finish versus grind cycle time is controlled by the choice
of the operator.
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