The use of an indirect impact quick-stop mechanism during the turning of α-titanium BT5 alloy

Dahunsi, Olurotimi Akintunde; Awopetu, O.O.

doi:10.1504/ijmmm.2008.017626

Cited by 5 publications

(8 citation statements)

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“…Recently, Thi et al 3 developed a homologous device than Chern 18 designed mainly to test hard turning process. Dahunsi et al 19 designed a QSD by applying against the cutting tool an indirect force in which the breaking action of a grooved shear pin is explored to move the tool away from the workpiece. Mousavi et al 2 developed a mechanism destined to be fitted on lathe.…”

Section: Introductionmentioning

confidence: 99%

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A new quick-stop device to study the chip formation mechanism in metal cutting: Computational and experimental investigation

Mhamdi

Rajhi

Boujelbene

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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Understanding the chip formation mechanisms during machining is an important factor to facilitate the choice of cutting tools and machining parameters. Despite the appearance of new sophisticated methods and advanced equipment, the technique so called quick-Stop Test (QST) remains efficient, less costly, and easier to apply in the investigation of chip formation in cutting process. In present paper a new Quick-Stop Device QSD is designed, numerically simulated, implemented, and tested. The reformed QST technique uses a QSD device which operates on the modified Charpy pendulum. Accordingly, design of new QSD is presented and deeply described, and 2D FE modeling of the new QST, including the application of the appropriate boundary conditions, has been carried out. Moreover, chip formation and morphology for different cutting conditions have been effectively simulated. Subsequently, quick stop cutting operations including metal cutting tests of high alloyed tool steel (AISI D2) using fabricated new QSD are performed. Preliminary results of quick-stop experiment from current investigation prove the effectiveness of the new designed QSD in matter of rigidity, safety, and absence of vibration, while providing a fast set up time and allowing extremely short workpiece-cutting tool separation time and guarantee the generation of chip with its root. The photomicrographs of chip root samples gathered from hard metal cutting experiments including various cutting speeds machining conditions, enables clear observation of segmented chip formation mechanisms, thereby, highly promising the new designed QSD for the purpose of investigation of the different cutting parameters influencing the chip formation and morphology.

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Section: Introductionmentioning

confidence: 99%

“…Dahunsi et al. 19 designed a QSD by applying against the cutting tool an indirect force in which the breaking action of a grooved shear pin is explored to move the tool away from the workpiece. Mousavi et al.…”

Section: Introductionmentioning

confidence: 99%

A new quick-stop device to study the chip formation mechanism in metal cutting: Computational and experimental investigation

Mhamdi

Rajhi

Boujelbene

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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show abstract

“…Dahunsi and Awopetu used an indirect impact quick-stop for the analysis of chip root of α-titanium alloy BT5 in a semi-finish turning operation [10]. The quick-stop mechanism, with the cutting tool held in place in the tool holder, is mounted in the position of the tool post just like the dynamometers.…”

Section: Introductionmentioning

confidence: 99%

Study and investigation on the mechanism and design of smart quick stop device on scrutiny of chip formation of Al 7075

Dadvandipour

2020

MDT

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On the application of information engineering, especially in industry, we usually need to have a study on those problems which are essential for the producers of goods of any kind. Even though the precision machining is very competitive in the world market and industry, and the quick stop device has few competitors; however, still, many manufacturing factories use conventional types of equipment and machining methods. Furthermore, the decision-makers of these factories are not able to go on parallel with the new and intelligent technologies for the solution of the tribulations during the processes of machine cells due to different conditions and problems. To our understanding, the chip formation has become a critical problem in machining processes of metal cutting, at these types of manufacturing companies for its sophisticated pattern structure. The present paper aims at reviewing some samples of quick stop devices and discussing their functionalities. The discussion and reviewing yielded a design of a new and straightforward smart, quick stop device. The new device operates without making use of any unpredictable charges and requiring any particular tool or machining condition for turning operations. The prototype smart, quick stop device resulted in well and adequate functionality for research work and was used to study the chip formation. Moreover, it is different from conventional ones as it is mounted on the workpiece rather than the tool, which gives advantages to its functionality. The study has a further application for smart detection of chip shape formation in an intelligent industrial environment. Still, the current paper is only devoted to the development and design of a quick stop device in turning processes.

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“…Thus, a quick stop device (QSD) is used to rapidly decrease the relative speed between the cutting tool and the workpiece to zero then the frozen chip remains in contact with the workpiece. Thereafter the chip is extracted and prepared to be investigated [5]. Therefore, in designing a QSD some consideration points should be taken into account: the frozen chip should remain like it was before the device had been launched, the speed of device taking away for the workpiece is higher than cutting speed, a minimum separation of time, and controls the desirable time of stopping.…”

Section: Introductionmentioning

confidence: 99%

An An Analysis of Strain Rate Distribution Using Streamline Model and A Quick Stop Device in Metal Cutting

Kadhim

Alshamma

2019

NJES

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In this paper, a quick stop device technique and the streamline model were employed to study the chip formation in metal cutting. The behavior of chip deformation at the primary shear zone was described by this model. Orthogonal test of turning process over a workpiece of the 6061-T6 aluminum alloy at different cutting speeds was carried out. The results of the equivalent strain rate and cumulative plastic strain were used to describe the complexity of chip formation. Finite element analysis by ABAQUS/explicit package was also employed to verify the streamline model. Some behavior of formation and strain rate distribution differs from the experimental results, but the overall trend and maximum results are approximately close. In addition, the quick stop device technique is described in detail. Which could be used in other kinds of studies, such as the metallurgical observation.

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The use of an indirect impact quick-stop mechanism during the turning of α-titanium BT5 alloy

Cited by 5 publications

References 0 publications

A new quick-stop device to study the chip formation mechanism in metal cutting: Computational and experimental investigation

A new quick-stop device to study the chip formation mechanism in metal cutting: Computational and experimental investigation

Study and investigation on the mechanism and design of smart quick stop device on scrutiny of chip formation of Al 7075

An An Analysis of Strain Rate Distribution Using Streamline Model and A Quick Stop Device in Metal Cutting

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