TransferBalancing Machine for Crankshafts
(Exchange transport)
200 RBTK

Range of application
Measurement and correction of unbalance in machined crankshafts in large-series production, linked with the production line and with any arbitrary gantry loader.

Unbalance correction by drilling into the counterweights in one or two correction steps.

Design
Multi-station machine with fully-automatic operating sequence.

Modular machine design provides optimum adaptability to the application. Layout of the machine diagonal to the in-feed and out-feed conveyors. All stations of the machine covered by numeric-controlled loading gantry delivering crankshafts lengthwise to the machine. According to the requirement, either one or two transfer carriages, one or two double-grippers. Short cycle times through NC-control, minimum mass movement and short travel distances.

Microprocessor-controlled measuring equipment for calculation of optimum correction. Software program for component or optimized correction and statistics.

Programmable machine control and diagnostic system with monitor display for shortening the machine-stationary time is standard (display in German, English, or other official EC languages, other languages on request).

Measuring station for symmetric crankshafts with coupling-free drive. Drive of the shaft by synchronous drive-rollers with hard-metal coating. Crank-pin detection for the angle reference signal.

Correction stations with easy-access, horizontally-arranged drill unit with electro-mechanical advance mechanism. Precise touch point signal and depth-control. Drill with coolant or Oil. Clamping unit completely enclosed, to prevent contamination of the machine by coolant and chips. Chip removal by under-floor chute or chip-conveyor.

Geometry measuring station with following functions: Identification of the crankshaft type and sampling of the crank-pin geometry. The latter allows an offset of unbalance errors through position deviations of the crank-pins. The unbalance condition in later assembly is considerably improved.

Measuring station for asymmetric crankshafts with spindle-drive, hook-adapter and hardened metal rollers. Support for the shaft on the outside main journals, synchronization at the crank journal. A bob-weight eliminator in the drive compensates for missing crank masses contained in the counterweights.