Kistler is launching a new Type 9129A modular three-component dynamometer for measuring machining forces of up to 8kN during boring, cutting and turning operations. It is suitable for analysing process capability, investigating the machining of new materials, and optimising high-performance cutting. The modular design enables the dynamometer to be easily adapted to match a wide range of lathes including VDI, Coromant and Capto machines, plus standard turrets. Toolholders for cutting and boring tools can be mounted on the cover plate of the dynamometer.
The piezoelectric sensor system on which this measuring system is based measures the forces with virtually no displacement, and the design of the dynamometer minimises temperature errors. Ground loop problems are largely avoided by ground-isolated mounting of the sensors. Provided matching cables are used, the corrosion-resistant dynamometer is ingress-protected to IP67.
On twin-turret, inclined-bed lathes, the measuring system can be mounted over or under the workpiece. The dynamometer has been designed to ensure that the cutting edge of the tool is always at the height of the rotational axis, in the middle of the workpiece, irrespective of the mounting position.