An invariant method updating Abbe principle for accuracy test and error calibration of rotary pairs in machine tools

Wang, Zhi; Wang, Delun; Dong, Honggang; Yu, Shudong

doi:10.1016/j.ijmachtools.2019.04.006

Cited by 9 publications

(1 citation statement)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other rotary error measurement methods, such as the circular ball plate method, require centering on the top of the rotary table [5]. A device comprising five capacitance probes should be mounted on the table, and a doubleball artifact should be attached to the rotor; this is difficult to assemble and the process is time-consuming [6]. Ibaraki et al [7] designed a workpiece processed by a five-axis NC machine tool, and the geometric errors of the rotation axis were identified using a touch-trigger probe.…”

Section: Introductionmentioning

confidence: 99%

Four-station laser tracer-based geometric error measurement of rotary table

Zha

Han

et al. 2020

Meas. Sci. Technol.

View full text Add to dashboard Cite

The geometric errors of numerical control (NC) rotary tables can be measured using a single instrument according to the conventional measurement method. This study presents an efficient method for this measurement using four-station laser tracers. A 3D coordinate measurement algorithm of the four-station laser tracer was established, the self-calibration of the laser tracer position and the spatial measuring point algorithm was realized, and the volumetric error of the measuring point on the rotary table was obtained. Then, the geometric errors of the NC rotary table were modeled using the screw theory, and a three-point measurement method was proposed to realize the separation of these geometric errors. Using the geometric error measurement experiment, six geometric errors of the NC rotary table were obtained. Compared with the conventional standard ball and laser interferometer measurement methods, the radial and axial runout results obtained using the laser tracer show differences of 0.08 and 0.07 µm, respectively, and the result of positioning error measurement shows a difference of 2.2 µrad. In addition, the method proposed in this study demonstrates an efficiency improved by five times, under the premise of ensuring the measurement accuracy, which broadens the possibilities for applications of rotation axes’ geometric error measurement in machining centers.

show abstract

Section: Introductionmentioning

confidence: 99%