Transfer Balancing Machine for Wound Armatures
440 KBTU

Range of application
Measurement and correction of unbalance of armatures of various sizes. Application of the machine in production lines for large rotor volumes.

Unbalance correction by milling into the stack (profile/slot milling) in one or two planes.

Design
Four-station machine with fully automatic sequence of operations.

Station-to-station transfer and integration with peripheral equipment through integrated rotary transfer system.

Work-pieces can be delivered to the machine by conveyor belt or on pallets.

Correction methods
Profile milling:
Polar unbalance correction at the correct location, suitable for most applications.

Polar slot-milling:
The milling spindle with twin cutter is displaced axially to shift the effect of the milling operation to the polar direction of the unbalance.

Slot-milling:
A variable method for quasi-polar or component correction. High flexibility through employment of single or multiple cutters and adaptation of the component angle.

All correction methods can be used for armatures with inclined or straight stack slots. In addition to material removal by plunge milling, weight removal can be increased by controlled axial cutter advancing.

The transporter operates with a lift-and-turn gear and is regulated by frequency-controlled drive. In a flowing, sine-wave motion the rotors are safely transferred through the stations. This ensures short cycle times with smooth acceleration, and exact positioning. We offer a variety of customized solutions for integration with existing production lines and the sorting of out-of-tolerance rotors.

Flexible installation and easy change over capability also in the case of the correction station. The digitally controlled milling and positioning equipment operates effectively and accurately, and also permits the desired milling method to be selected without a control change. Whether polar profile milling or slot milling in components, whether plunge or axial milling, this machine is designed for any processing format.

The balancing unit is mounted on spring bars. A pneumatic damping cylinder locks the balancing unit during loading. The belt drive with AC servo motor and precise electro-dynamic vibration sensors complete the unit. The bearing assembly equipped with scaling or revolving heads allows a simple change over to other rotor types within short time. The electronic angle impulse sampling operates accurately and requires no separate reference mark.