Spindle and Dynamics Analyzer Systems

with nanometer resolution and for speeds of up to 100.000 rpm

For machining optical components and molds the work as well as tool-holding spindle is key. Only motor spindles with aerostatic bearing systems are capable of generating surface finishes of only a few nanometer Ra. The shaft error in motion thus has to be in the same range as the Ra values of the parts that are to be machined. Also, shape and form accuracies depend on the thermal and long-run stability for which aerostatic spindles are suitable because of their very low and stable thermal distortions.

ShakesBear_Titel

As it is usually done for standard machining with roller-bearing spindles controlling and checking the static tool run-out is by far insufficient. To qualify a spindle to be capable of machining optical components high-frequency shaft errors in motion in radial and axial directions in a nanometer range, spindle resonances over its entire speed range and shaft axial growth and soak time need to be controlled and measured. As such are commercially not available Levicron have been developing analyzing systems to qualify their spindle products since the beginning and have finally combined all their internal testing methods to generate their “ShakesBear” Spindle and Dynamics Analyzer Systems. Based on a spindle and machine tool data base static and dynamic spindle analysis can be performed with nanometer resolution and for speeds of up to 100.000 Upm. Our analyzing system “ShakesBear” gives the spindle and machine tool manufacturer the perfect tool to check and control static and dynamic spindle properties on a test bench as well as in a machine tool.[/p]

ShakesBear “Hamlet”

  • Radial/axial Shaft Error in Motion Measurement with Nanometer Resolution
  • Built-in automatic Error Separation between Spindle synchronous and Artefact Shape Errors
  • For Speeds of up to 100.000 rpm
  • Digital Drag-Pointer Gauge to align Cap Gauges and Spindle Artefact
  • Integrated Spindle and Machine Data Base
  • Automated Report Generation
  • Automated Raw Data and Report Storage

ShakesBear “Othello”

  • Dynamic Tool Run-Out and Spindle Vibrations with Spindle Speed
  • Spindle and System Resonance Speed Maps
  • 2-Channel FFT-Analyzer with built-in Peak-Hold (Impulse Response Analysis)
  • Shaft axial Growth, Spindle Speed and Temperature over Time
  • Digital Drag-Pointer Gauge to align Cap Gauges and Spindle Artefact
  • Integrated Spindle and Machine Data Base
  • Automated Report Generation
  • Automated Raw Data and Report Storage