Piezoelectric dynamometer for use in high-performance cutting

The patented design has integrated temperature compensation which eliminates the effect of heat generated during the cutting process to minimise signal drift. This ensures that forces generated by processes that create large amounts of heat may be measured with accuracy. A high natural frequency was a key issue in Kistler's development work and extensive FEM analyses were carried out to optimize the design and structure so that natural frequencies of about 3kHz are achieved despite the dynamometer's size. This ensures that the measurement signals generated by the cutting processes are captured accurately, even at high tooth passing frequencies.

The large number of threaded holes simplifies mounting workpieces on the dynamometer, whilst the widely used Fischer flange connector concept with the same pin configuration as other Kistler stationary dynamometers makes it simple to change the measuring platform using the existing cables and charge amplifiers. The dynamometer is corrosion resistant and protected against penetration by splashing water or cutting fluid to IP67 when used with the appropriate connecting cable. The Type 5070A multi-channel charge amplifier is especially suited to interface with the dynamometer, although other charge amplifiers with suitable operating parameters may also be used.

Follow the link for more information about the Type 9139AA stationary multicomponent dynamometer from Kistler Instruments.