Measurement of five-degrees-of-freedom spindle error motion using multi probe error separation

2021 ◽  
pp. 095440542199566
Author(s):  
Sang-Woo Baek ◽  
In-Oh Hwang ◽  
Nahm-Gyoo Cho
Keyword(s):  
Degrees Of Freedom ◽  
Side Surface ◽  
Measuring Method ◽  
Probe Method ◽  
Form Error ◽  
Error Separation ◽  
Tilt Error ◽  
Evaluation Test ◽  
Error Motion ◽  
Fourier Model

Herein, a precision measurement method is proposed to evaluate the radial, axial, and tilt error motions of rotating devices such as precision spindles. To improve the accuracy of the estimated multiple-degree-of-freedom error motion components, form error signals in the runout signals are separated and precompensated for before the calculation of the five-degrees-of-freedom error motion components. Fourier model-based multi probe error separation (MPES) techniques, which can prevent the occurrence of harmonic distortions, are applied to separate the form error signals. A three-probe method is applied to layers on the side surface of the cylindrical artifact, and a modified two-probe method is developed and applied to the upper surface. The radial, tilt, and axial error motions are calculated using the runout signals that do not contain the separated form error signals. The measurement system uses eight capacitive probes to detect the runout signals of the cylindrical artifact mounted at the center of the rotating device. To compare the proposed method with the five-probe-based conventional measuring method, an evaluation test simulation is conducted repeatedly five times. Results indicate that the proposed MPES method calculated the uncertainty using the deviation between the computed results from the existing and novel methods; additionally, the input signal in terms of the radial, tilt (layers 1 and 2), and axial error motions are [Formula: see text], [Formula: see text], [Formula: see text], and [Formula: see text], respectively. It is confirmed that the undesirable effects of the form error signals are successfully removed and that the accuracies of the measured spindle error motion components improve.

Easy measuring instrument for analyzing the radial and tilt error motions of a rotating shaft

2017 ◽  
Vol 231 (2) ◽  
pp. 667-674 ◽  
Author(s):  
Dong-Hyeok Lee ◽  
Wi-Ro Lee
Keyword(s):  
Real Time ◽  
Measurement System ◽  
Probe Method ◽  
Separation Method ◽  
Rotating Shaft ◽  
Error Separation ◽  
Real Time Measurement ◽  
Rotary Stage ◽  
Tilt Error ◽  
Error Motion

In this study, a real-time measurement system to easily apply multi-probe error separation method for error motion measurement of a shaft was designed and developed. An arrangement condition of sensing probes for accurate multi-probe error separation method was examined and verified by a simulation test. By following the examined arrangement condition for multi-probe method, a measurement system to measure radial and tilt error motions of a shaft was designed and developed. The efficiency of the multi-probe method with the examined arrangement condition was checked by comparing the error motion results for a rotary stage with the error motions in the specifications of the guarantee. It is expected to apply this system to a real-time monitoring system of failure diagnosis for rotating shafts in ships and plants.

scholarly journals A New Measuring Method for Spindle Error Motion Using a Cube-corner Prism and Laser Interferometers (1st Report)

1990 ◽  
Vol 56 (2) ◽  
pp. 381-387
Author(s):  
Norimitsu OZAWA ◽  
Yutaka KITAMURA ◽  
Tsuguo KOHNO ◽  
Kimiyuki MITSUI ◽  
Yuichi OKAZAKI
Keyword(s):  
Measuring Method ◽  
Cube Corner ◽  
Error Motion ◽  
Laser Interferometers

Analysis of error motions of axial locking-prevention hydrostatic spindle

2018 ◽  
Vol 233 (1) ◽  
pp. 3-17
Author(s):  
Penghai Zhang ◽  
Yaolong Chen
Keyword(s):  
Significant Influence ◽  
Harmonic Component ◽  
Necessary Condition ◽  
Third Harmonic ◽  
The Third ◽  
Fourth Harmonic ◽  
Radial Error ◽  
Tilt Error ◽  
Error Motion ◽  
Error Averaging

Hydrostatic spindles are widely used in precision optical grinder and lathe. Their high precision comes from the error averaging effect of oil film. The purpose of this paper is to give the quantitative analysis of the error averaging effect for a newly developed axial locking-prevention hydrostatic spindle. An approximate error motion model of the hydrostatic spindle is established to analyze the internal relationship between the geometric errors of the shaft and the error motions of the spindle including radial, tilt and axial error motions. The theoretical analysis shows that, the roundness errors of the two journals have a major impact on error motions while the coaxiality errors of two journals, the perpendicularity errors of front thrust plate and the coaxiality errors of the land of back thrust bearing, have no significant influences on error motions. The elliptical component of roundness errors of the two journals has significant influence on the axial error motion but no influence on the pure radial and tilt error motions, resulting into the fourth harmonic component of axial error motion. The trilobal component of roundness errors of the two journals has significant influence on the pure radial and tilt error motions but no influence on the axial error motion, resulting in the third harmonic component of pure radial and tilt error motions. The changes of recess pressures are not necessary condition for the error motions. Additionally, the experiment analysis shows that, the third harmonic component is the main part of the measured radial error motion and the third, fourth harmonic components are the main parts of the measured face error motion, which can be reasonably explained by the theory. The model proposed in this paper can be used to guide the precision design and optimization of hydrostatic spindle.

Precision measurement of Z-slide vertical error motion of an ultra-precision lathe by using three-probe method

2017 ◽  
Vol 18 (5) ◽  
pp. 651-660 ◽  
Author(s):  
Zengyuan Niu ◽  
Yuan-Liu Chen ◽  
Daiki Matsuura ◽  
Jung Chul Lee ◽  
Ryo Kobayashi ◽  
...  
Keyword(s):  
Precision Measurement ◽  
Probe Method ◽  
Vertical Error ◽  
Ultra Precision ◽  
Error Motion

Effect of Measuring Instrument Eccentricity and Tilt Error on Circularity Form Error

2019 ◽  
Author(s):  
Suhash Ghosh ◽  
Chittaranjan Sahay ◽  
Poorna Pruthvi Chandra Malempati
Keyword(s):  
Precision Machining ◽  
Measuring Instrument ◽  
Form Error ◽  
Form Errors ◽  
Power Stations ◽  
Form Tolerance ◽  
Tilt Error ◽  
Cylindrical Parts ◽  
Measurement And Evaluation ◽  
The One

Abstract From power stations to power tools, from the smallest watch to the largest car, all contain round components. In precision machining of cylindrical parts, the measurement and evaluation of roundness (also called circularity in ASME Geometric Dimensioning & Tolerancing Y14.5) and cylindricity are indispensable components to quantify form tolerance. Of all the methods of measuring these form errors, the most precise is the one with accurate spindle/turntable type measuring instrument. On the instrument, the component is rotated on a highly accurate spindle which provides an imaginary circular datum. The workpiece axis is aligned with the axis of the spindle by means of a centering and tilt adjustment leveling table. In this article, the authors have investigated the dependence of circularity form error on instrument’s centering error (also known as eccentricity) and tilt error. It would be intriguing to map this nonlinear relationship within its effective boundaries and to investigate the limits beyond which the measurement costs and time remain no more efficient. In this study, a test part with different circular and cylindrical features were studied with varying levels of predetermined instrument eccentricity and tilt errors. Additionally, this article explores the significance of incorporating these parameters into undergraduate and graduate engineering curricula, and be taught as an improved toolkit to the aspiring engineers, process engineers and quality control professionals.

scholarly journals In Situ Measurement of Spindle Radial and Tilt Error Motions by Complementary Multi-probe Method

2019 ◽  
Vol 2 (4) ◽  
pp. 225-234 ◽  
Author(s):  
Fei Ding ◽  
Xichun Luo ◽  
Wenlong Chang ◽  
Zhengjian Wang
Keyword(s):  
Probe Method ◽  
Displacement Sensor ◽  
Air Bearing ◽  
Harmonic Suppression ◽  
Radial Error ◽  
Tilt Error ◽  
Measurement Results ◽  
Probe Angle ◽  
Measurement Approach

Abstract This paper presents a complementary multi-probe method for measurement of radial and tilt error motions of a spindle. Neither indexing of artefact nor rotating of spindle housing is required and thus make it suitable for in situ evaluation of spindle performance effectively. In order to minimize the harmonic suppression problems commonly encountered in the multi-probe measurement approach, three sets of probe angle combinations were optimized and the harmonics of the three measurements were extracted and composed to reveal the true artefact errors in a complementary way. The exact probe angles were identified by the correlation function of the probe signals after the sensors are mounted onto the fixture and the requirement of high-precision fixtures was alleviated. The evaluation of measurement results showed that the erroneous harmonics were greatly reduced by 70%. Using this method, the radial error motions of the precision air bearing spindle were measured at seven axial positions and then the synchronized tilts error motions were calculated. This demonstrated an effective approach for measuring four degree-of-freedom error motions in one setup with a small number of displacement sensor probes.

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