Range of application
Measurement of the weight of rotating and oscillating parts or the absolute weight of machined connecting-rods for internal combustion engines. Controlled weight correction at the prepared correction pads on the small-end and big-end. Weight correction is usually followed by fineboring.
Application of the machine in largevolume production, interfaced with the production line.
Design
Transfer machine with automatic operating sequence. Modular machine construction, thus optimally adaptable to the task. Arrangement of the stations in an in-line direction with all stations covered by an electro-mechanical lift and carry transfer for transport of the connecting rods. Welded machine base with lateral bases supporting the milling units, prepared for removal of the chips by a chip-conveyor or underfloor extractor. Electromechanical, numerically controlled milling unit and digital operating tandem weighers. Microprocessor-controlled measuring equipment for acquisition of the measured values and processing; machine PLC control with fault diagnosis.

Electro-mechanical carriage units with digital positioning control. Milling of the correction pads with amply dimensioned milling cutters with hard-metal carbide inserts (divided arrangement for overlapping cut.) The horizontal layout of the units allows easy chip removal directly through the machine bed into a collection bin, on a chip-conveyor or underfloor extractor.

Sampling of the connecting-rod geometry for increasing the correction accuracy is an option. This method allows an offset to cater for weight deviations through final machining of the journal holes and/or acquisition of the actual pad geometry.

Measurement and control weighers with two electronic load-cells for the big-end and small-end. Digital determination of the absolute weight or deviations from the pre-defined target weight. Zero setting according to a master connecting-rod. Weighers are adaptable to other connecting-rod types by adjustment or exchange of adapters.

De-burring equipment with rotating tool, matched to the actual parameters of the workpiece. Largely constant control of the de-burring cross-section without affecting the weightcorrection results.