Drill point geometry of multi-flute drills

Hsieh, Jung-Fa; Lin, Psang Dain

doi:10.1007/s00170-003-2027-x

Cited by 18 publications

(6 citation statements)

References 13 publications

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“…In addition, different mathematical approaches were followed in order to design and simulate the drilling tools directly from the manufacturing process of grinding using again a geometrical approach (Armarego, 2000;Armarego, 2003a, 2003b). The impact of the flute geometry and the drill point variations were further examined with the same approach in order to simulate their performance (Hsieh, 2005;Hsieh and Lin, 2005;Zhang, 2008a, 2008b).…”

Section: Modelling Approachesmentioning

confidence: 99%

Thrust force prediction of twist drill tools using a 3D CAD system application programming interface

Kyratsis¹,

Tapoglou

Bilalis

et al. 2011

IJMMM

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Twist drills are geometrical complex tools and various researchers have adopted different mathematical and experimental approaches for their simulation. The present paper acknowledges the increasing use of modern CAD systems and subsequently, using the application programming interface (API) of a typical CAD system, drilling simulations are carried out. The developed DRILL3D software routine, creates, via specifying parameters, tool geometries, so that using different cutting conditions, realistic solid models are produced incorporating all the relevant data involved. The 3D solid models of the undeformed chips coming from both cutting areas are segmented into smaller pieces, in order to calculate every primitive thrust force component involved with high accuracy. The resultant thrust force produced, is verified by adequate amount of experiments using a number of different tools, speeds and feed rates. The final data derived consist of a platform for further direct simulations regarding the determination of tool wear, drilling optimisations etc.

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Section: Modelling Approachesmentioning

confidence: 99%

Thrust force prediction of twist drill tools using a 3D CAD system application programming interface

Kyratsis¹,

Tapoglou

Bilalis

et al. 2011

IJMMM

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show abstract

“…A load reliability provides the ability to change cutting wedge configurations to be varied in a wide range of designs according to two basic principles: the plunge efficiency [4] and the reproducibility of the geometry after wear [5]. The are many works aimed at improving the types of the cutting part of drill [6][7] in order to form it as the easiest at the stage of regrinding [8][9][10][11]. There is a constructive solution based on a smooth change in the shape of clearance and the shape of the helical surface without crossing the tangent to the profile of drill axis.…”

Section: Introductionmentioning

confidence: 99%

New image processing algorithm to control the accuracy of sharpening drills

Pivkin

Гречишников

Ershov

et al. 2022

Emerging Imaging and Sensing Technologies for Security and Defence VII

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The geometric parameters of sharpening the rake surface are very important for the efficient use of the drill. Therefore, it is important to know the correct sharpening angle of the drill in the radial direction. This is especially important at the stage of regrinding the drill, due to the incorrect installation of the drill into the fixture. In this paper, a new image processing algorithm is proposed that allows you to set indicators and factors that determine the correct choice of the angular position of the drill after regrinding. This algorithm can be of great industrial use due to the simplicity of implementation and minimization of the necessary equipment for setting up the measuring station. The presented model has an important application value and differs from the existing ones in that it can be applied for regrinding of drills with curvilinear cutting edges. This advantage is achieved by using a simpler construction of the drill’s flank surfaces. The proposed design ensures a rational distribution of the clearance angle value along the cutting part regardless of the original shape of the flank surface before the regrinding. Taking into account the limitations of the image processing algorithm and the theoretical model of the cutting part of a tri-flute drill, a rational ratio of the rake and clearance angles obtained by simulating the edge movement in cutting process. This approach allows a radical revision of the traditional recommendations for regrinding process of tri-flute drills. This is becomes possible to solve problems associated with regrinding drills with involute and multi-level flat flank surface. However, the validity of our work still needs to be carefully checked.

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“…Recently, within a decade, a number of advanced approaches have been developed for modeling and optimizing of twist drill point, which made the numerical overall optimization of twist drill performance available, thanks to the increasing simulation technology [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Modeling and optimization of grinding parameters for custom-oriented twist drill with a Biglide parallel machine

Zou

Kim

Liu

2016

Int J Adv Manuf Technol

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A modeling method is presented for grinding of the designated geometrical parameters of twist drill in a Biglide parallel machine, which has the more effective and economic potentialities for grinding of drill point. The grinding kinematics trajectory and condition are analyzed based on the structure of the Biglide parallel machine. Moreover, the mathematical model of twist drill flank are derived and used to develop the parametric models of twist drill based on the grinding parameters of the Biglide parallel machine. The optimal grinding parameters are obtained for the custom-oriented twist drill using genetic algorithm. The grinding experiment results using the optimal grinding parameters agree well with the designated geometrical parameters of twist drill and show a marked improvement in grinding precision of the drill point in the Biglide parallel machine, depending on the customers' demands.

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Drill point geometry of multi-flute drills

Cited by 18 publications

References 13 publications

Thrust force prediction of twist drill tools using a 3D CAD system application programming interface

Thrust force prediction of twist drill tools using a 3D CAD system application programming interface

New image processing algorithm to control the accuracy of sharpening drills

Modeling and optimization of grinding parameters for custom-oriented twist drill with a Biglide parallel machine

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