Safer Saws -- Hollymatic 2020 - 2

DEFENDER 4000 BAND SAW
According to Victor Guynn, director of
engineering at Hollymatic, the inertia of the
band saw's wheels, the driving force behind
the blade, was the first challenge they
needed to address for the Defender 4000.
"Normally the wheels are 17 lbs. to 20 lbs. a
piece and they're spinning about 1100 rpm,"
Guynn says. "You have to find a big enough
motor to stop that inertia once it starts
spinning. We were able to find a proprietary
motor that we had made for us. Then we

coupled it with a gearbox to gain more
torque."
Once the motor and gear box became a
part of the Defender 4000 make-up, Guynn
and his team found the blade stopping in
around 100 milliseconds. Guynn wanted the
blade to stop faster to ensure the highest
level of safety. Traditional, heavier stainlesssteel wheels, especially the top wheel
which has no braking mechanism, equaled
significant inertia. With the weight allowing
the unchecked top wheel to continue
spinning after the bottom wheel stopped, the
blade still traveled roughly 10 ft.
The Hollymatic team consulted Chris Rupp,
vice president of beef operations at Tyson
Foods, regarding wheel weight and figured
out a way to lighten them. "It lowered the
inertia by three times," Guynn says.

Superintendents
and their teams
received worker
safety awards
at Tyson Foods'
Dakota Dunes,
SD, offices.

Once the team took care of
stopping the wheels in time,
they fixed their energy on
the vision system sending
the message to "stop the



Safer Saws -- Hollymatic 2020

Table of Contents for the Digital Edition of Safer Saws -- Hollymatic 2020

Safer Saws -- Hollymatic 2020 - 1
Safer Saws -- Hollymatic 2020 - 2
Safer Saws -- Hollymatic 2020 - 3
Safer Saws -- Hollymatic 2020 - 4
Safer Saws -- Hollymatic 2020 - 5
https://www.nxtbook.com/sosland/hollymatic/2020_02_24
https://www.nxtbook.com/sosland/hollymatic/2019_09_01
https://www.nxtbook.com/sosland/hollymatic/2018_02_01
https://www.nxtbook.com/sosland/hollymatic/2015_10_01
https://www.nxtbookmedia.com