In-process control of cutting depth during turning

Dijkman, M.; Stöbener, Dirk; Allers, S.; Kuhfuß, Bernd; Goch, G.

doi:10.1109/sice.2007.4421502

Cited by 4 publications

(5 citation statements)

References 6 publications

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“…For the determination of the tracking error trial cuts have been conducted after turning experiments. Results of similar trial cuts have been published in previous investigation by Dijkman [18]. It became clear that the tracking error alone is not responsible for such drop of compensation performance.…”

Section: Resultssupporting

confidence: 70%

“…Further details were published by Dijkman [18] and Stoebener [19]. A particular design feature of the FTS is that the moving tool holder is suspended to the FTS frame by a flexure bearing instead of using linear guiding (Fig.…”

Section: Applied Fast Tool Servomentioning

confidence: 99%

“…Thus the depth of cut varies depending on the angular position of the workpiece. Further details regarding the synchronization of the machine spindle with the FTS motion are described in [18].…”

Section: Applied Fast Tool Servomentioning

confidence: 99%

See 2 more Smart Citations

Improving the shape quality of bearing rings in soft turning by using a Fast Tool Servo

Beekhuis

Brinksmeier

Garbrecht

et al. 2009

Prod. Eng. Res. Devel.

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In machining of ring shaped components, the workpiece is deformed by the clamping forces of the chuck. This elastic deformation generates shape deviations in soft turning. Moreover, the machining process generates locally varying residual stresses which contribute to shape deviation of the workpiece. Hence, in machining of thinwalled bearing rings hexagonal out-of-roundness up to 200 lm occur. In order to minimize the shape deviations, a long stroke Fast Tool Servo (FTS) for controlling the depth of cut was developed. The applied FTS differs from other published FTS systems in the guidance design. The moving tool holder is suspended to the FTS frame by flexure joints instead of using a linear guidance. The flexure joints provide a low stiffness in moving direction and high stiffness in orthogonal directions. The high stiffness in cutting force direction is essential for a real time reduction of shape deviations in soft turning. In this paper, results of an experimental investigation for the reduction of the shape deviation by adapted non circular machining are presented, using the developed FTS. Based on the results, the influence of the cutting forces on part accuracy is discussed.

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Section: Resultssupporting

confidence: 70%

Section: Applied Fast Tool Servomentioning

confidence: 99%

See 1 more Smart Citation

Improving the shape quality of bearing rings in soft turning by using a Fast Tool Servo

Beekhuis

Brinksmeier

Garbrecht

et al. 2009

Prod. Eng. Res. Devel.

View full text Add to dashboard Cite

show abstract

“…For the cutting process, the tool was driven by a Fast-Tool Servo (FTS), which allows an in-process variation of the cutting depth [2] (avoiding wall thickness variations due to elastic clamping deformations). Furthermore, an ultrasonic measurement system has been developed for an in-process measurement of wall thickness [3].…”

Section: Introduction Of the Quality Control Conceptmentioning

confidence: 99%

Cross‐plane quality control concept of the bearing ring production

Zhang¹,

Renken²,

Goch³

2012

Materialwissenschaft Werkst

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This contribution reports on a cross-plane quality control concept for the production of bearing rings. The principal part of this quality control concept is the cross-plane controller, which actually acts as an iterative optimization throughout the production chain and bases upon the models of each sub-process. The cross-plane controller and a model-based sub-control system for the gas quenching process are introduced in this paper.Keywords: Cross-plane / quality / control / roundness deviation / Dieser Beitrag führt in ein prozessübergreifendes Regelungskonzept für die Produktion von Wälz-lagerringen ein. Den Hauptbestandteil dieses Konzept bildet ein prozessübergreifender Regler, der in einem iterativen Optimierungsprozess über die Modelle der Einzelprozesse in der Produktionskette die optimalen Eingangsparameter für den jeweiligen Folgeprozess berechnet. Das übergreifende Regelungskonzept wird anhand eines modellbasierten Regelungssystems für den Gasabschreckungsprozess eingeführt.

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“…To achieve this goal, the last three sub-processes for manufacturing of steel rings have been modified. During cutting a FastTool Servo (FTS) was implemented to perform fast variation of cutting depth [1]. By means of in-process-measurement data with an ultrasonic sensor and a closed loop control, the FTS is able to compensate wall thickness deviation [2,3].…”

Section: Introductionmentioning

confidence: 99%

Calibration routine for in-process roundness measurements of steel rings during heat treatment

Gafsi

Goch

2011

SPIE Proceedings

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This paper reports on the calibration routine developed for an absolute measurement of the mean radius and the ovality of a ring. By means of six laser triangulation sensors, the measurements are performed in-process in a furnace during heat treatment. The lack of precise information about the exact position and direction of the sensors and the minimal accessibility of the ring in the furnace is challenging and leads to a complex calibration routine. The calibration includes the application of gauge rings with different diameters. The developed routine is described and calibrated measurement results are compared with coordinate measurement machine (cmm) data. Concerning the ring radius (~ 72.5 mm), the comparison exhibits a deviation to the cmm data of less than 35 µm.

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In-process control of cutting depth during turning

Cited by 4 publications

References 6 publications

Improving the shape quality of bearing rings in soft turning by using a Fast Tool Servo

Improving the shape quality of bearing rings in soft turning by using a Fast Tool Servo

Cross‐plane quality control concept of the bearing ring production

Calibration routine for in-process roundness measurements of steel rings during heat treatment

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