Review of Geometric Solutions for Milling Burr Prediction and Minimization

Tripathi, Shantanu; Dornfeld, David

doi:10.1243/095440505x32652

Cited by 15 publications

(10 citation statements)

References 7 publications

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“…Provision of a beveled work edge was reported to lower burr height noticeably in milling and drilling operations [12][13][14][15][21][22][23] due to gradually decreasing depth of cut and the reducing need of back-up support. Suitable tool path selection also reduces burr height [24]. Significant effect of different size of drills on burr formation was observed in some other works [14,15] under varying cutting conditions.…”

Section: Introductionmentioning

confidence: 89%

“…formed in these tests as no back-up support material is available at the exit edge of the drilled hole. For this, shear plane is likely to have oriented to a negative direction facilitating formation of burr as shown inFigure 2[21,24]. When shear plane is oriented towards a negative plane, the chip is bent downwards and can be attached to the exit edge of workpiece forming a burr.…”

mentioning

confidence: 99%

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Observation of Drilling Burr and Finding out the Condition for Minimum Burr Formation

Mondal

Sardar

Halder

et al. 2014

International Journal of Manufacturing Engineering

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Suppression or elimination of burr formation at the exit edge of the workpiece during drilling is essential to make quality products. In this work, low alloy steel specimens have been drilled to observe burr height under different machining conditions. Taper shank, uncoated 14 mm diameter HSS twist drills are used in these experiments. Dry environment is maintained in experiment set I. Water is applied as cutting fluid in experiment set II. In the next four sets of experiments, the effect of providing back-up support material and exit edge bevel is observed on formation of burr at the exit edge of specimens under dry and wet conditions. It is revealed that an exit edge bevel of 31 degrees with water as the cutting fluid gives negligible burr at the exit edge of the drilled hole at certain machining conditions. Use of a back-up support can also reduce drill burr to a large extent. In this paper, artificial neural networks (ANN) are developed for modeling experimental results, and modeled values show close matching with the experimental results with small deviations.

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Section: Introductionmentioning

confidence: 89%

mentioning

confidence: 99%

Observation of Drilling Burr and Finding out the Condition for Minimum Burr Formation

Mondal

Sardar

Halder

et al. 2014

International Journal of Manufacturing Engineering

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“…Avila and Dornfeld 38 showed that tool geometry and in-plane exit angle Ψ have significant effects on burr size and edge breakout during the face milling of aluminum–silicon alloys (AlSi9Cu3 and AlSi7Mg). Tripathi and Dornfeld 49 reported the possibility of burr-free conditions when using diamond end mill tools at high cutting speeds. According to Gillespie and Blotter, 31 the use of sharp cutting edge tools with positive rake angle avoids built-up edge (BUE) formation, thus reducing the burr size.…”

Section: Factors Governing Milling Burr Formationmentioning

confidence: 99%

Milling burr formation, modeling and control: A review

Niknam

Songmené

2014

Proceedings of the Institution of Mechanical Engineers, Part B:

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Because of global competition, manufacturing industries today must provide high-quality products on time to remain competitive. High-quality mechanical parts include those with better surface finish and texture, dimension and form accuracies, reduced residual stress and burr-free. Burr formation is one of the most common and undesirable phenomenon occurring in machining operations, which reduces assembly and machined part quality. To remove burrs, a secondary operation known as deburring is required for post-processing and edge finishing operations. Since deburring is costly and considered a non-value-added process, the goal is desired to eliminate burrs or reduce the effort required to remove them. Because of non-uniform chip thickness, tool runout and complex interactive effects between cutting process parameters, milling burr formation is a very complex mechanism. Therefore, research and close attention are still needed in order to minimize and control milling burr formation. In this article, a review of burr formation and characterization is presented, along with burr formation modeling and control. An overview of factors governing milling burr formation is also presented.

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“…Avila and Dornfeld [37] showed that tool geometry and in-plane exit angle Ψ have significant effects on burr size and edge breakout during the face milling of aluminum-silicon alloys (AlSi9Cu3 and AlSi7Mg). Tripathi and Dornfeld [53] reported the possibility of burr-free conditions when using diamond end mill tools at high cutting speeds. According to [18], the use of sharp cutting edge tools with positive rake angle avoids built-up edge (BUE) formation, thus reducing the burr size.…”

Section: Cutting Tool Geometrymentioning

confidence: 99%