Super-precision cylindrical machining

Kumabe, Junichiro; Hachisuka, M.

doi:10.1016/0141-6359(84)90034-5

Cited by 12 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With the development of the aviation and aerospace industry, large high-precision rotating components with large radius and height have higher cylindricity evaluation requirements, such as a large power driving shaft [1][2][3][4][5]. As shown in figure 1, the definition of cylindricity is that the extracted cylindrical surface should be contained in two coaxial cylinders with a minimum radius difference in radii of t [6,7], which directly reflects the processing quality of the surface and affects the rotating characteristics [8].…”

Section: Introductionmentioning

confidence: 99%

A cylindricity evaluation approach with multi-systematic error for large rotating components

Sun

Liu

et al. 2020

Metrologia

View full text Add to dashboard Cite

For reduction of the cylindricity evaluation uncertainty for large rotating components with large radius and height, the cylindrical profile measurement model is designed with multisystematic error considering eccentricity, probe offset, probe radius, geometric axis tilt, support rod tilt, and guide rail tilt. In addition, an error separation method is proposed based on the multi-systematic error measurement model. The combined influence of multisystematic error on the measurement results is analyzed, and cylindricity results are evaluated based on the proposed method. It is verified that, compared with other measurement models, the cylindrical profile measurement model with six systematic errors is the most accurate and stable in the standard cylindrical component measurements using a large high-precision cylindricity measuring instrument. In this experiment, compared with the cylindrical profile measurement model with two systematic errors, the cylindricity evaluation uncertainty obtained by the proposed method reduces from 55.2 µm to 21.0 µm with increasing radius and height of the standard cylindrical component. The proposed method is especially suitable for the cylindrical component measurements with large radius and height. The paper provides an accurate measurement model for high-precision error separation, tolerance allocation and cylindricity comparison for accredited laboratories, national metrology institutes etc.

show abstract

Section: Introductionmentioning

confidence: 99%

A cylindricity evaluation approach with multi-systematic error for large rotating components

Sun

Liu

et al. 2020

Metrologia

View full text Add to dashboard Cite

show abstract

“…Further, a machine tool post is designed for the operation. Many studies have proved -not only theoretically but also experimentally -that a vibrational tool can greatly reduce the cutting forces during cutting due to a considerable reduction of the friction between the workpiece and the cutting tool [6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Tooling device design for vibration-assisted high speed shaping of PMMA

et al. 2010

View full text Add to dashboard Cite

PMMA optical components that are used as one of the most important parts of high precision equipments and machines are increasingly replacing the glass due to the various advantages of PMMA. Especially in Light Guide Panels, the PMMA sheet that is used in Liquid Crystal Displays plays an important role in scattering the incident light and requires very fine machining as the sheet is directly related to the optical characteristics of the panels. The High Speed End milling and High Speed Shaping processes that are widely adopted and applied to the precise machining of Light Incident Plane still have quality problems, such as cracks, breakages, poor waviness, and straightness. This paper presents the tooling device design for machining a Light Incident Plane through vibration-assisted High Speed Shaping for increasing the optical quality by minimizing the above-mentioned problems. The cutting tool and the tool post presented in this paper are designed by the authors to increase the magnitude of the cutting stroke by adopting the resonant frequency without weakening the stiffness and to reduce vibrations during even high speed feeding. The dynamic characteristics of the cutting tool and the tool post are evaluated through simulation and experiment as well. The results reveal very appropriate dynamic characteristics for vibration-assisted High Speed Shaping.

show abstract

“…Evaluating cylindricity is a very important application in metrology, since cylindrical surfaces are ubiquitous in industrial machining, and the realization of high-quality cylinders is a crucial technological objective [4]. This leads to stringent tolerancing and, consequently, a high premium is placed on accurate evaluations of cylindricity to avoid costly rejections of valid specimens.…”

Section: Introductionmentioning

confidence: 99%

Accurate cylindricity evaluation with axis-estimation preprocessing

Lao

Leong

Preparata

et al. 2003

Precision Engineering

View full text Add to dashboard Cite

Evaluating cylindricity is a very important application in metrology. In this paper, we focus on cylindricity evaluation based on radial form measurements. The standard characterization of cylindricity is the notion of zone cylinder, i.e. the cylindrical crown contained between two coaxial cylinders with minimum radial separation and containing all the data points. Unfortunately, the construction of the zone cylinder is a very complex geometric problem, which can be formulated as a nonlinear optimization. Recently a new method (referred to here as the hyperboloid method) has been discussed, which avoids the direct construction of the zone cylinder of a point set, but approximates it with guaranteed accuracy through a computationally very efficient iterative process based on a linearization of the underlying problem. The iterations can be viewed as the construction of a sequence of "zone hyperboloids" tending to the desired "zone cylinder." An important requirement of the method, however, is that the initial position of the cylindrical specimen axis be nearly vertical, since significant deviations from this condition essentially invalidate the process. It is the purpose of this paper to remove this shortcoming of the hyperboloid technique by providing a simple procedure for appropriately initializing the data (axis estimation). Axis estimation and the hyperboloid technique constitute an integrated methodology for cylindricity evaluation, which is currently the most effective. The theoretical foundations of the method are reviewed from a viewpoint that highlights its essential features and intuitively explains its effectiveness. The analytical discussion is complemented by experimental data concerning a few significant samples.

show abstract

Super-precision cylindrical machining

Cited by 12 publications

References 0 publications

A cylindricity evaluation approach with multi-systematic error for large rotating components

A cylindricity evaluation approach with multi-systematic error for large rotating components

Tooling device design for vibration-assisted high speed shaping of PMMA

Accurate cylindricity evaluation with axis-estimation preprocessing

Contact Info

Product

Resources

About