Error motion trajectory-driven diagnostics of kinematic and non-kinematic machine tool faults

An adaptive methodology for machine tool error correction is presented in this paper. The estimated errors resulting from the proposed methodology could be used to adjust the depth of cut on the finish pass or correct the probing data for on-machine inspection to improve the accuracy of workpiece. A generalized error model is derived, using rigid body kinematics, to describe the error motion between the cutting tool and workpiece. Process-intermittent gauging and state observation techniques are integrated to monitor the thermally induced errors and then to modify the error model’s coefficients as the cutting process proceeds. Analysis-of-variance (ANOVA) is used to identify the significant variables for thermal effect modeling. A multiple linear regression model is derived to identify the dynamics of the time-varying thermally induced errors. Multivariable state observers are constructed to track the thermal effect in real time and to fine tune the error model’s coefficients. Experimental results show that the time-varying machine tool errors can be estimated with desirable accuracy.

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The Study on 5-DOF CNC Machine Tool Motion

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.494-495.448 ◽

2014 ◽

Vol 494-495 ◽

pp. 448-451

Author(s):

Jia Zheng Wei

Keyword(s):

Machine Tool ◽

Trajectory Planning ◽

Machine Tools ◽

Cnc Machine Tools ◽

Cnc Machine Tool ◽

Cnc Machine ◽

Motion Error ◽

Tool Motion ◽

Error Motion

The 5-DOF CNC machine tools motion error, motion space simulation and interference are analyzed. The tool machine dynamic and static interference, trajectory planning are discussed, which realizes the parts manufacturability and processing rationality.

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Measurement of dynamic error motion of 5-axis machine tool with Laser R-test device

The Proceedings of Conference of Chugoku-Shikoku Branch ◽

10.1299/jsmecs.2020.58.10c3 ◽

2020 ◽

Vol 2020.58 (0) ◽

pp. 10c3

Author(s):

Koki ONODERA ◽

Soichi IBARAKI

Keyword(s):

Machine Tool ◽

Dynamic Error ◽

Test Device ◽

Error Motion

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The Method and Experimental Research on Seam Tracking and Dual-Beam Laser Welding for T-Type Welding Seam

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.687-691.309 ◽

2014 ◽

Vol 687-691 ◽

pp. 309-315

Author(s):

Ping Jiang Wang ◽

Xin Wang ◽

Ling Lin ◽

Yang Wu

Keyword(s):

Laser Welding ◽

Machine Tool ◽

Seam Tracking ◽

Motion Trajectory ◽

Vision Sensor ◽

Cnc System ◽

Welding Seam ◽

Beam Laser ◽

Dual Beam ◽

Welding Torch

Aimed at the goal of improving the quality and the efficiency of welding for T-type welding seam, This paper put forward a method to track the seam by using the vision sensor. Machine tool main motion trajectory is generated from the numerical model of the parts. The position of two welding torches are adjusted independently based on the machine tool main motion trajectory to ensure the welding precision. Two sets of adjusting mechanism are needed for T-type welding seam. The vision sensor measure the seam and pass the deviation signal to the CNC system. The CNC system adjust the position of the welding torch installed on the cross slide table to reach the goal of seam tracking and dual-beam laser welding for T-type welding seam. Practice shows that this system for T-type welding seam dual-beam laser welding is easy to operate and can improve the quality and the efficiency.

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Root‐cause analysis of wear‐induced error motion changes of machine tool linear axes

International Journal of Machine Tools and Manufacture ◽

10.1016/j.ijmachtools.2019.05.004 ◽

2019 ◽

Vol 143 ◽

pp. 38-48 ◽

Cited By ~ 3

Author(s):

Gregory W. Vogl ◽

N. Jordan Jameson ◽

Andreas Archenti ◽

Károly Szipka ◽

M. Alkan Donmez

Keyword(s):

Machine Tool ◽

Root Cause Analysis ◽

Cause Analysis ◽

Root Cause ◽

Error Motion

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Research on the Online Test of the Fly Cutting Machine Tool Spindle

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.579-580.177 ◽

2013 ◽

Vol 579-580 ◽

pp. 177-180

Author(s):

Peng Qiang Fu ◽

Yong Zhang ◽

Fei Hu Zhang ◽

Jing He Wang

Keyword(s):

Machine Tool ◽

Test System ◽

Motion Error ◽

Radial Error ◽

Synchronous Motion ◽

Online Test ◽

Cutting Machine ◽

Fly Cutting ◽

Ultra Precision ◽

Error Motion

The online test system of the vertical spindle motion error of the ultra-precision fly cutting machine tool was established. And then using the online test system established to test and analyze the state of the rotary motion of the spindle under the idling condition. The axial synchronous motion error value of the spindle under 390rpm is about 61 nm, and the asynchronous error motion is about 33nm. The radial error motion value is about 91nm, and the asynchronous error is about 35nm. Through the test, we found that the axial and radial spindle error motion accuracy under idling speed can been improved with the spindle speed increases.

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