Identification of Rotary Axis Location Errors under Spindle Rotation by using a Laser Barrier Tool Measurement System

Thermal distortions are regarded as one of the major error factors in machine tools. ISO 230-3 and ISO 10791-10 describe tests to evaluate the influence of thermal distortions caused by linear motion and spindle rotation on the Tool Center Position (TCP). However, for five-axis machine tools, no thermal test is described for a rotary axis. Therefore, in this paper, a method for observing thermally induced geometric errors of a rotary axis with a static R-test is proposed. Unlike conventional thermal tests in ISO 230-3 and ISO 10791-10, where the thermal influence on the positioning error at a single point is tested, the present test measures the thermal influence on the error motions of a rotary axis. The R-test measurement clarifies how the error motions of a rotary table change with the rotation of a swiveling axis and how they are influenced by thermal changes. The thermal influence on the error motions of a rotary axis is quantitatively parameterized by geometric errors that vary with time.

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A new optical measurement system for determining the geometrical errors of rotary axis of a 5-axis miniaturized machine tool

Journal of Mechanical Science and Technology ◽

10.1007/s12206-009-1139-0 ◽

2010 ◽

Vol 24 (1) ◽

pp. 175-179 ◽

Cited By ~ 26

Author(s):

Sung-Ryung Park ◽

Trung-Kien Hoang ◽

Seung-Han Yang

Keyword(s):

Machine Tool ◽

Measurement System ◽

Optical Measurement ◽

Optical Measurement System ◽

Rotary Axis ◽

Geometrical Errors

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An online spindle rotation error measurement system based on improved three point method

2009 9th International Conference on Electronic Measurement & Instruments ◽

10.1109/icemi.2009.5274476 ◽

2009 ◽

Cited By ~ 1

Author(s):

Yun Zhang ◽

Tao Tao ◽

Xuesong Mei ◽

Yuqing Zhou

Keyword(s):

Measurement System ◽

Point Method ◽

Error Measurement ◽

Rotation Error ◽

Spindle Rotation

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A five degrees-of-freedom errors measurement system for rotary axis with reference laser for reference axis alignment

Review of Scientific Instruments ◽

10.1063/5.0013242 ◽

2020 ◽

Vol 91 (7) ◽

pp. 075101

Author(s):

Li Liu ◽

Zhi-Feng Lou ◽

Yu-Bin Huang ◽

Kuang-Chao Fan ◽

Ji-Yun Zhang

Keyword(s):

Measurement System ◽

Degrees Of Freedom ◽

Rotary Axis ◽

Reference Axis ◽

Axis Alignment ◽

Reference Laser

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A Method for Simultaneously Measuring 6DOF Geometric Motion Errors of Linear and Rotary Axes Using Lasers

Sensors ◽

10.3390/s19081764 ◽

2019 ◽

Vol 19 (8) ◽

pp. 1764 ◽

Cited By ~ 11

Author(s):

Zheng ◽

Feng ◽

Zhang ◽

Keyword(s):

Measurement System ◽

Degrees Of Freedom ◽

High Efficiency ◽

Single Mode ◽

Cnc Machine Tools ◽

Laser Source ◽

Cnc Machine ◽

Motion Error ◽

Rotary Axis ◽

Geometric Motion

A novel method for simultaneously directly measuring six-degrees-of-freedom (6DOF) geometric motion errors of CNC machine tools was proposed, and a corresponding measurement system was developed. This method can not only be applied for measuring a linear axis, but also for a rotary axis. A single-mode fiber was used to separate the measuring unit from the laser source in order to ensure system thermal stability and measurement accuracy. The method has the advantages of high efficiency and good accuracy, and requires no complicated decoupling calculation. The positioning error of the linear axis and radial motion error of the rotary axis are measured by laser interferometry and other 5DOF geometric motion errors by laser collimation. A series of experiments were performed to verify the feasibility and effectiveness of the developed measurement system.

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