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ROTARY ANALYZER

In-depth analysis and diagnostics of your 5-axis machine tool.

For comprehensive analysis and diagnostics of 5-axis machine tools, the Rotary Analyzer places full capability in your hands. Machine tool developers and professional maintenance providers can quantify 5-axis machine performance in real time with both static and dynamic measurement possible.

From hidden controller errors, to axis misalignment or bearing performance issues, the technology allows unprecedented characterisation of real machine performance.

Key features:

  • Measurement of up to 5-axis (quinaxial) machine operation in 3D
  • Both static and dynamic measurements with micron accuracy
  • Machine acceptance according to ISO 10791-6
  • Calibration of the rotary table position and squareness
  • Easy compensation thanks to kinematic parameters
  • Dynamic analysis including FFT and polar plots

 

How does it work:

With the patented wired Triton probe or the wireless Trinity probe, the Rotary Analyzer determines the location of a master ball accurately in all 3 dimensions X, Y and Z simultaneously. This probe measures the real position of the master ball centre point, which is mounted to the rotating part of the machine. The probe is fixed to the non-rotating part of the machine. Software can be easily programmed to perform a range of user defined tests including  ISO standard measurements.  Both static and dynamic tests can be performed and a suite of analysis options allows for indepth characterisation of the machine tool performance.

 

Applications:

1. Machine acceptance

The Rotary Analyzer is a very efficient tool for machine acceptance tests - verifying the kinematic accuracy of the machine. Both user defined kinematic tests can be applied and/or those according to ISO 10791-6.

ISO 10791-6 defines a standard set of test conditions for machining centres. The tests involve circular motion by simultaneous three or five-axis control. For three-axis control, the following accuracy of a circular path made by two linear axes is verified against that of a single perpendicular rotary axis at constant speed. From the path deviations, error motions or mislaignments of the axes can be derived. With five-axis control, the accuracy of a circular path followed by three linear axes is matched to two rotary axes.

Implementation of ISO 10791-6 or user defined tests is possible for multiple machine configurations using the Rotary Analyzer:

  • swivel head machines
  • rotating table or trunnion machines
  • swivel head and rotary table combined

 

2. Rotary table position and compensation

With a simple measurement, the actual location of a rotary table can be determined with a high degree of accuracy (measuring uncertainty of the wired probe is < 0,6 μm and of the wireless probe < 1,0 μm).

The machine is programmed to incrementally step through the range of the rotary axis with the linear axes commanded to follow the motion. At each step, a measuring point is taken of the deviation in the two paths.

Based on this static measurement procedure the Rotary Analyzer software determines:

  • Location of the rotary table
  • Squareness of the rotary table

The results are directly presented in the machine’s coordinate system and can be applied to correct the machine’s kinematic model present in the controller. A repeat of the measurement will reveal the improvement of the machine’s positioning behaviour achieved. Please find an example of rotary table compensation here.

3. Dynamic analysis

Dynamic measurements may be performed to reveal the accuracy of the paths described by the simultaneous movement of two or more  linear and rotary axes. In this case measuring points are taken on-the-fly.

Such dynamic measurement data is inaccesible through standard machine tool calibration methods. This very advanced measurement may be performed in minutes. It reveals the true accuracy one can expect when making a work piece.
 

 

 

Demonstration video

 

For more information, please see our 'Machine Tool Inspection and Analyzer solutions" brochure.