INSTALLATION EXAMPLES: MESTA - EARLY DESIGN ROLL GRINDER
COMPUTERIZED CROWNER RETROFIT SYSTEM
This
Mesta design is of the vintage that includes an integral wheel spindle and
motor, as opposed to the more conventional belt driven independent spindle on
most other grinders. The lever arm tilts the complete motor assembly,
which pivots on its front edge. These photos show the RGB Engineering SLA (Servo
Linear Actuator) installed on the standard lever arm of this class of Mesta roll
grinders. The old acme screw is replaced with a precision ball screw,
driven by a DC servo motor through a harmonic drive reduct
ion
unit. A zero backlash coupling completes the drive train to the ball
screw. A Gemco rotary limit switch is used to set the travel limits.
A LVDT, bolted to the end of the bracket, provides position feedback to the
servo drive, which receives the command reference from the FFG computer control.