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The SBS External Balancer system from Schmitt Industries Inc. is elegantly simple; a computer control, sensor, spindle mounting adaptor, and balance head. It is designed as an inexpensive, permanent installation on grinding machines. It takes the magic out of wheel balancing.
Fully automatic operation means you no longer need to pre-balance grinding wheels, and eliminates the need for awkward equipment, which only does part of the job. Fully automatic operation means you no longer need to pre-balance grinding wheels, greatly reducing set-up time and ensuring a smoother running, more efficient grinding operation.
Systems are available to fit machines with wheel diameters from 6” to 48”. They interface with CNC machines and can be designed into every QC/SPC program which includes grinding. You purchase the SBS System as a retrofit package or as an option from most machine tool builders and rebuilders.
The system operates on a principle of mass compensation for wheel imbalance. The balance head contains two movable eccentric weights, each weight is driven by electric motors through a precision gear train. These weights can be repositioned to offset any imbalance in a grinding wheel.
Imbalance or vibration is picked up by the sensor. The signal is fed to the controller, which filters the signal by RPM. The controller then drives the two balance head weights in the direction that reduces the amplitude of the vibration signal. When the weights are positioned so the lowest vibration level is reached, the balance cycle is complete.
Computer control features a bright graphic display in a sealed enclosure for the harshest of grinding environments.
Sensor monitors vibration levels with precision accuracy. It can be mounted with the magnet supplied or the magnet easily un-screws for stud mounting.
Balance Head compensates for wheel imbalance. Balance is maintained even if wheel is stopped and re-strated.
Spindle Adapter attaches balancer head to the grinder. It allows easy removal of the balance head for quick wheel changes.
Related Glossary Terms
- computer numerical control ( CNC)
computer numerical control ( CNC)
Microprocessor-based controller dedicated to a machine tool that permits the creation or modification of parts. Programmed numerical control activates the machine’s servos and spindle drives and controls the various machining operations. See DNC, direct numerical control; NC, numerical control.
- grinding
grinding
Machining operation in which material is removed from the workpiece by a powered abrasive wheel, stone, belt, paste, sheet, compound, slurry, etc. Takes various forms: surface grinding (creates flat and/or squared surfaces); cylindrical grinding (for external cylindrical and tapered shapes, fillets, undercuts, etc.); centerless grinding; chamfering; thread and form grinding; tool and cutter grinding; offhand grinding; lapping and polishing (grinding with extremely fine grits to create ultrasmooth surfaces); honing; and disc grinding.
- grinding wheel
grinding wheel
Wheel formed from abrasive material mixed in a suitable matrix. Takes a variety of shapes but falls into two basic categories: one that cuts on its periphery, as in reciprocating grinding, and one that cuts on its side or face, as in tool and cutter grinding.
- spindle adapter
spindle adapter
Bushing or toolholder that permits affixing a variety of taper- and straight-shank tools to a machine spindle.
