Balancing Machine for Wound Armatures
400 FBTU

Range of application
Measurement and correction of unbalance in wound armatures of various sizes and other similar rotors (external rtors).

Use of the machine in series production for medium and large volumes. Unbalance correction by milling into the stack (profile/slot milling) in one or two planes.

Design
Multi-station machine with automatic function sequence, manual loading.

The work-pieces can be delivered to the machine by conveyor belt, on pallets or in cases.

Modular, machine constructed for future extensions, prepared for integ-ration with a work-piece handling system.

Powerful measuring unit with graphic-capability color monitor, digital signal processor, software modules for calculation of standard and complex correction procedures, large rotor data memory, operator prompting, extensive automted setup procedures, diagnostic programs, statistics software, external interface.

Sequence of operation

• Start the automatic sequence (run-up, measure, brake and index). The measured values are stored in the measuring unit and processed. The rotor is stoppedand manually positioned in the correction station.
• Start the automatic correction process: Clamp the rotor and mill in the 1st position. Unclamp, if necessary index to the 2nd correction component, clamp, mill, unclamp.
• For correction into two places, the milling slide is repositioned and the rotor is indexed to the required position. The slot-milling process is then repeated for the second plane.
• After the correction process the rotor is once more loaded in themeasuring station for checking the residual unbalance.

The rotor is loaded into the balancing unit that has been setup for the rotor type and accelerated to balancing speed by the belt-drive. The measured unbalance values are calculated for correction and stored. Finally the rotor is stopped in a defined position. Run-up, measurement, brake and indexing are automatic. One or two measuring stations are possible.

Change over to a new rotor type is quick and without problems. Only the bearing inserts and axial retainers of the balancing unit must be set up and the clamping piece for the correction station changed. Calibration data, milling curves, milling plane distances, etc. are simply called from the memory for each rotor type. For the mechanical change over the supervisor is guided by a color display.

The rotor is clamped from above during milling. The milling cutter plunges into the rotor stack. The milling depth varies according to initial unbalance and rotor geometry. The chips drop down into a container. All movements like indexing, moving into the correction plane, and milling advance, are controlled digitally. All milling actions are selectable without control changes.