Measurement and analysis for frequency domain error of ultra-precision spindle in a flycutting machine tool

The ultra-precision spindle is the key component of ultra-precision machine tool, which largely influences the machining accuracy. Its frequency characteristics mainly affect the frequency domain error of the machined surface. In this article, the error measurement setup for the ultra-precision aerostatic spindle in a flycutting machine tool is established. The dynamic and multi-direction errors of the spindle are real-time measured under different rotation speeds. Then, frequency domain analysis is carried out to obtain its regularity characteristics based on the measurement result. Through the analysis, the main synchronous and asynchronous errors with relatively large amplitude of the spindle errors are found, and the amplitude change law of these main spindle errors is obtained. Besides, the cause of the main synchronous and asynchronous errors is also analyzed and indicated. This study deepens the understanding of ultra-precision spindle dynamic characteristics and plays the important role in the spindle frequency domain errors’ control, machining process planning, frequency characteristics analysis and oriented control of the machined surface errors.

[1]  Wuyi Chen,et al.  A methodology for error characterization and quantification in rotary joints of multi-axis machine tools , 2010 .

[2]  G. L. Samuel,et al.  Harmonic-analysis-based method for separation of form error during evaluation of high-speed spindle radial errors , 2012 .

[3]  M. Aketagawa,et al.  Concurrent measurement method of spindle radial, axial and angular motions using concentric circle grating and phase modulation interferometers , 2014 .

[4]  Eric R. Marsh,et al.  Effects of gas composition on asynchronous error motion in externally pressurized spindles , 2008 .

[5]  Sitong Xiang,et al.  Modeling for spindle thermal error in machine tools based on mechanism analysis and thermal basic characteristics tests , 2014 .

[6]  O. Burak Ozdoganlar,et al.  A Technique for measuring radial error motions of ultra-high-speed miniature spindles used for micromachining , 2012 .

[7]  Yang Jianguo,et al.  Modeling for spindle thermal error in machine tools based on mechanism analysis and thermal basic characteristics tests , 2014 .

[8]  Tao Wang,et al.  Dynamic design approach of an ultra-precision machine tool used for optical parts machining , 2012 .

[9]  Chi-Wei Lin,et al.  A new method to quantify radial error of a motorized end-milling cutter/spindle system at very high speed rotations , 2006 .

[10]  Zhang Li,et al.  Modeling of dynamic characteristic of the aerostatic bearing spindle in an ultra-precision fly cutting machine , 2010 .

[11]  King-Fu Hii,et al.  Error motion of a kinematic spindle , 2004 .

[12]  Wei Gao,et al.  Precision Measurement of Multi-Degree-of-Freedom Spindle Errors Using Two-dimensional Slope Sensors , 2002 .

[13]  Eric R. Marsh,et al.  Experiences with the master axis method for measuring spindle error motions , 2000 .

[14]  Jianguo Yang,et al.  Thermal error prediction method for spindles in machine tools based on a hybrid model , 2015 .

[15]  Akio Katsuki,et al.  Simple and simultaneous measurement of five-degrees-of-freedom error motions of high-speed microspindle: Error analysis , 2014 .

[16]  Mehrdad Vahdati,et al.  An experiment on the shape and depth of air pocket on air spindle vibrations in ultra precision machine tools , 2013 .

[17]  Eric R. Marsh,et al.  Precision Spindle Metrology , 2007 .

[18]  G. L. Samuel,et al.  Modeling, measurement, and evaluation of spindle radial errors in a miniaturized machine tool , 2012 .

[19]  Christian Brecher,et al.  Machine tool spindle units , 2010 .

[20]  Chi Fai Cheung,et al.  Dynamic characteristics of an aerostatic bearing spindle and its influence on surface topography in ultra-precision diamond turning , 2012 .

[21]  Heber Ferreira Franco de Castro,et al.  A method for evaluating spindle rotation errors of machine tools using a laser interferometer , 2008 .

[22]  Yongda Yan,et al.  An AFM-based methodology for measuring axial and radial error motions of spindles , 2014 .

[23]  O. B. Ozdoganlar,et al.  Analysis of error motions of ultra-high-speed (UHS) micromachining spindles , 2013 .