Yaskawa Application Overview: Grinder
Click here for the full “Application Overview: Grinder” from Yaskawa.
Heavy cutting is done at slow speed. With a constant wheel pressure on the material to be shaped, the pounds/minute of material removed, or work done, varies with the wheel speed. This is the constant torque part of the profile. After the heavy cutting is complete, a polishing (light cutting) operation is performed. A high speed, lighter wheel-to-material pressure is maintained; therefore, less material in pounds/minute is removed. This is the constant horsepower part of the load profile.
Yaskawa AC drives have features that save energy, which allows the motor to run at optimal efficiency and precision when performing light grinding. Energy Saving Mode also reduces motor noise and stabilizes the load, perfecting the finishing process. Yaskawa AC drives can automatically detect changes to the amount of torque required during the shaping and finishing phases using Torque Detection. This feedback enables the drive to quickly detect changes as the grinding stone dulls or clogs. This can lead to significant cost savings by prolonging the life of grinding stones.