World Congress Fundamental and Applied Metrology September 6 − 11 , 2009 , Lisbon , Portugal ADVANCED CALIBRATION METHOD FOR PITCH ARTIFACT
Abstract − The pitch measuring accuracy for gear measuring instruments (GMIs) is evaluated by measuring a calibrated artifact. We proposed a novel artifact which called multiball artifact (MBA). The MBA is composed of the pitch balls assumed to gear teeth and the reference axis assumed to a center axis of gear. The MBA can be calibrated more accurate than a conventional pitch artifact. When the MBA is calibrated, it is important to eliminate an error of measuring instrument; therefore we calibrate the MBA adapting the multiple-orientation technique. In the multipleorientation technique, the MBA is set up in difference orientations around the reference axis and the measurement error is eliminates by averaging the measurement value for all orientations. There are, however, Fourier components of the measurement error that can not be eliminated depending on the total number of orientations. In this paper, we propose the advanced calibration method; the error separation method for the multiple-orientation technique is improved and the total number of orientations can be reduced. The superiority of the proposed method is clarified from the calibration results using the MBA.
Design of Laser Interferometric Measuring Device of Involute
The vibration and noise of gears is one of the serious problems for devices, such as vehicles and wind turbines. The characteristics of the vibration and noise of gears are considerably affected by the tooth flank form deviation of micrometer order. The quality of product gears is controlled using a gear measuring instrument and calibrated with an involute artifact. However, the conventional calibration of the involute artifact cannot achieve a sufficient accuracy. In this report, a direct method of measuring the involute artifact using a laser interferometer is proposed. Fundamental experiments are carried out, in which the effects of the surface condition of the measured object and the effect of the driving of the artifact are investigated. It is confirmed that the proposed method enables the measurement of the detailed form of an involute tooth flank and has the potential of accomplishing a highly precise measurement of an involute artifact.
Phenomenology and Existentialism
Chapter 1 Preface to the 2001 Edition Chapter 2 Introduction Part 3 The Phenomenology of Edmund Husserl Chapter 4 The Attack on Psychologism Chapter 5 The Phenomenological Reductions Chapter 6 Phenomena and Phenomenological Reflection Chapter 7 Intentionality Chapter 8 Meaning and Constitution Chapter 9 Essences and Necessary Truth Part 10 Existential Phenomenology Chapter 11 Phenomenology and Ontology Chapter 12 Existence Chapter 13 The Life World Part 14 Self and Others Chapter 15 Consciousness and the Ego Chapter 16 Intersubjectivity Chapter 17 Freedom Chapter 18 Existentialist Ethics Chapter 19 Bibliography