On-machine measurement method for dynamic stiffness of thin-walled workpieces

Kono, Daisuke; Umezu, Takuma

doi:10.1016/j.precisioneng.2019.08.015

Cited by 7 publications

(3 citation statements)

References 23 publications

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“…The operating ranges of the individual axes are: X, 1770 mm; Y, 655 mm; and Z, 685 mm. functions are mostly measured with an impulse hammer; however, depending on the quirements, alternative measuring systems are also used [23][24][25]. This paper presents a modeling approach for predicting the dynamic behavior of chine tools with ball screw drives.…”

Section: Methodsmentioning

confidence: 99%

“…On the one hand, the general dynamic behavior of a machine structure can be evaluated and improved, and on the other hand, the FRFs at the tool center point form the basis of stability studies for machining [22]. Frequency response functions are mostly measured with an impulse hammer; however, depending on the requirements, alternative measuring systems are also used [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

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Validation of a Coupled Simulation for Machine Tool Dynamics Using a Linear Drive Actuator

Wiesauer

Habersohn

Bleicher

2020

JMMP

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In order to ensure high productivity capabilities of machine tools at a low cost but at increased geometric accuracy, modeling of their static and dynamic behavior is a crucial task in structure optimization. The drive control and the frictional forces acting in feed axes significantly determine the machine’s response in the frequency domain. The aim of this study was the accurate modeling and the experimental investigation of dynamic damping effects using a machine tool test rig with three-axis kinematics. For this purpose, an order-reduced finite element model of the mechanical structure was coupled with models of the drive control and of the non-linear friction behavior. In order to validate the individual models, a new actuator system based on a tubular linear drive was used for frequency response measurements during uniaxial carriage movements. A comparison of the dynamic measurements with the simulation results revealed a good match of amplitudes in the frequency domain by considering dynamic damping. Accordingly, the overall dynamic behavior of machine tool structures can be predicted and thus optimized by a coupled simulation at higher level of detail and by considering the damping effects of friction. Dynamic testing with the newly designed actuator is a prerequisite for model validation and control drive parameterization.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Validation of a Coupled Simulation for Machine Tool Dynamics Using a Linear Drive Actuator

Wiesauer

Habersohn

Bleicher

2020

JMMP

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“…The performance of a precision device or manufacturing machine is highly affected by its rotating accuracy and various industry demands on on-machine measurement technology. 1–7 For the precision evaluation of the rotational performance of a spindle, five-degrees-of-freedom (5-DOF) error motion components should be measured accurately using the runout data of the rotational parts. 1,8–15 However, the runout data obtained from artifacts, which are widely used for the precision measurement of rotational error motions, contain form error signals of the artifacts’ surfaces.…”

Section: Introductionmentioning

confidence: 99%

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

Baek

Hwang

Cho

2021

Proceedings of the Institution of Mechanical Engineers, Part B:

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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.

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Enhancing the multi-encoder-based cutting force estimation along the stationary axis of a machine tool with multiple inertia dynamics

Yamamoto

Kamba

Takeuchi³

et al. 2022

Int J Adv Manuf Technol

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On-machine measurement method for dynamic stiffness of thin-walled workpieces

Cited by 7 publications

References 23 publications

Validation of a Coupled Simulation for Machine Tool Dynamics Using a Linear Drive Actuator

Validation of a Coupled Simulation for Machine Tool Dynamics Using a Linear Drive Actuator

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

Enhancing the multi-encoder-based cutting force estimation along the stationary axis of a machine tool with multiple inertia dynamics

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