In-process measurement and workpiece-referred form accuracy control system (WORFAC): application to cylindrical turning using an ordinary lathe

Uda, Yutaka; Kohno, Tsuguo; Yazawa, Takanori

doi:10.1016/0141-6359(95)00035-6

Cited by 21 publications

(5 citation statements)

References 2 publications

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“…Choudhury i M.S, Sharath [5] przemieszczenia względne pomiędzy narzędziem a przedmiotem obrabianym są mierzone za pomocą czujnika optycznego (rys.2.). Podobne podejście możemy dostrzec w pracy Y.Uda, T.Kohno i T.Yazawa [6], gdzie naukowcy również w swoim stanowisku zastosowali czujnik optyczny do pomiarów przemieszczeń.…”

Section: __________unclassified

Development of a measurement method of relative displacements of the tool and the workpiece during turning

Skrzyniarz¹,

Nowakowski²,

Miko³

2015

Mechanik

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StreszczeniePrzedstawiono dotychczasowe stanowiska badawcze służące do pomiaru przemieszczeń narzędzia i przedmiotu obrabianego w trakcie procesu toczenia. Omówiono główne wady tych stanowisk i zaprezentowano autorskie stanowisko do pomiarów przemieszczeń względnych w układzie "narzędzie -przedmiot obrabiany" podczas toczenia. Słowa kluczowe: toczenie, przemieszczenia względne DEVELOPMENT OF A MEASUREMENT METHOD OF RELATIVE DISPLACEMENTS OF THE TOOL AND THE WORKPIECE DURING TURNING AbstractThe hitherto existing test rigs for measurement of displacements of the tool and the workpiece in the process of turning have been presented. The main disadvantages of these rigs were discussed and an original test rig for measurement of relative displacements in the "tool -workpiece" system during turning was presented.

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Section: __________unclassified

Development of a measurement method of relative displacements of the tool and the workpiece during turning

Skrzyniarz¹,

Nowakowski²,

Miko³

2015

Mechanik

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“…The coordinate systems for the measurement and the repair cutting are also needed to have sub-micrometric correlations with each other so that the repair cutting can be made exactly against the micro-defect without influencing other parts of the mold surface. There are surface metrology-based methods existing for detection of the positions and profiles of defects on ultra-precision surfaces, such as the laser scattering method [22], interferometers [23], scanning probe microscopes (SPM) [24,25], confocal microscopes [26], contact thermal sensors [27] or optical sensors [28]. Some of them with special designs can be set up on an ultra-precision lathe for on-machine measurement.…”

Section: Introductionmentioning

confidence: 99%

An in-process measurement method for repair of defective microstructures by using a fast tool servo with a force sensor

Chen

Shu

Shimizu

et al. 2015

Precision Engineering

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a b s t r a c tThis paper presents an in-process measurement method, which is capable of conducting real-time position identification and on-machine profile characterization of micro-defects in defective microstructures by using a fast tool servo with a force sensor (FS-FTS) on an ultra-precision lathe. A real-time thrust force map is captured in the process of cutting the microstructures by the FS-FTS to indicate the cutting status with respect to the cutting tool position in the coordinate system of the lathe. Based on the thrust force map, the positions of the defects are identified in real time from the locations of the abnormal variations in the map associated with the occurrences of the defects. Characterization of the defects is then conducted by employing the force-controlled cutting tool as the measuring probe to measure the sectional profiles of the defective microstructures. The identified positions and the characterized profiles of the defects are then fed back to carry out the repair fabrication of the defective microstructures with an accurate tool path. Experiments of in-process detection and repair of the micro-defects in the microstructures over the outer surface of a roll mold were carried out to confirm the feasibility of the proposed method.

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“…developed an in-process measurement and compensation system of geometric errors for the turning by applying the reversal method [11,12]. They showed that this technique was quite practical in cylindrical turning.…”

Section: Introductionmentioning

confidence: 99%

3617 High-precision Machining by Measurement and Compensation of Motion Error

Kono¹,

Matsubara²

2007

The Proceedings of the JSME Annual Meeting

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This paper describes a systematic method to model and compensate geometric errors of machine tools. In order to separate geometric errors from other errors, measured errors are analyzed in the frequency domain by using the Fourier series. Then, the frequency components corresponding to geometric errors are selected based on the repeatability of their wavelength. Finally, the components are reconstructed and forwarded for the compensation by a fine motion drive. A CNC machine tool with a fine motion mechanism on the Z-axis was developed to compensate the error components in the Z direction on the XY plane. A flat surface machining with non-rotational cutting tools was tested to validate our approach. On the plane of 45 mm× 70 mm, the fluctuation of the relative displacement was reduced from 1.3 μmP-V to 0.5 μmP-V. Machining experiments with a single crystal diamond tool were also carried out and the straightness of the profile curve was reduced from 1.0 μm to 0.4 μm. The result of the experiments showed that the geometric errors were compensated separately from the vibration due to the bending mode of the machine column.

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In-process measurement and workpiece-referred form accuracy control system (WORFAC): application to cylindrical turning using an ordinary lathe

Cited by 21 publications

References 2 publications

Development of a measurement method of relative displacements of the tool and the workpiece during turning

Development of a measurement method of relative displacements of the tool and the workpiece during turning

An in-process measurement method for repair of defective microstructures by using a fast tool servo with a force sensor

3617 High-precision Machining by Measurement and Compensation of Motion Error

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