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Burr formation mechanism (a) Poisson burr (considering the cutting tool as a cylinder); (b) Rollover burr; (c) Tear burr; (d) Cut-off burr. Source: Adapted from [4].  

Burr formation mechanism (a) Poisson burr (considering the cutting tool as a cylinder); (b) Rollover burr; (c) Tear burr; (d) Cut-off burr. Source: Adapted from [4].  

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Article
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Burr formation in machining processes is considered to be one of the main problems in manufacturing. Its undesirable appearance changes the dimensions of machined products, poses a risk to the physical safety of workers, and hinders the assembly of mechanical systems, among other disadvantages. Therefore, burr dimensions must be studied in order to...

Contexts in source publication

Context 1
... of burrs according to formation mechanisms A proposal for the classification of burrs based on their formation mechanisms was presented by Gillespie and Blotter [4] as illustrated in Fig. 2. Four basic mechanisms were described, resulting in the identification of four types of ...
Context 2
... burr -the area of contact between the tip of the cutting tool and the feed force causes great stresses on the workpiece material due to the radius of the cutting edge. These stresses compress the workpiece material, causing plastic deformation and resulting in the formation of Poisson type burrs (Fig. ...
Context 3
... burr -before the chip shears off upon exiting the cutting tool, it folds toward the feed and over the exit edge. These burrs are considered to be of large dimensions. Fig. 2(b) shows this type of ...
Context 4
... burr -this type of burr occurs in most milling processes. It is formed when the chip is pulled from the workpiece, a situation imposed by shearing. After rupture, part of the already deformed material remains on the workpiece. Fig. 2(c) shows this type of ...
Context 5
... burr -this type of burr is common in radial turning, when a protrusion is left at the center of the workpiece at the end of the cut, caused by the rupture that occurred before the tool reached its center. Fig. 2(d) illustrates this type of ...

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Citations

... This happens because for greater feed force (F y ), higher stresses are being generated in the feed direction, what increases compression and causes the lateral deformation of material. Indeed, top burrs are Poisson-type burrs, that happens as a result of lateral deformation of material [41]. However, no clear relation between burr area and feed force could be established for the 0.8 mm tool diameter, since the correlation was weak. ...
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... As shown in Figure 16.6, burrs are categorized as Poisson burr, tear burr, and rollover burr based on the engagement of end mill cutter and workpiece material. Poisson burr is generated by the pressing material near the cutting verge [25]. Burr contains protuberance that is offset from or in the opposite ...
Chapter
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... In these papers, mostly, the milling machinability was studied. Silva et al. [18,19] studied burr formation in face milling of PH 13-8 Mo steel by investigating the influence of the cooling method, cutting tool geometry, and cutting depth. They reported burr height was significantly affected by tool geometry and depth of cut. ...
... The effects of cutting fluid application methods such as low flood, flooding, and minimum quantity lubrication (MQL) in milling PH 13-8 Mo were investigated by Silva et al. [18]. On the other hand, Öndin et al. [21] investigated the effectiveness of multi-walled carbon nanotubes (MWC-NTs) reinforced cutting fluids in turning machinability of PH 13-8 Mo steel considering surface quality, cutting zone temperature, and tool wear. ...
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... Apart from the above, a number of other investigations [32][33][34][35][36] was carried out on burr minimization in face milling. Different factors governing burr formation were explored 32 during high-speed milling of wrought aluminum alloys by Niknam and Songmene. ...
... Different factors governing burr formation were explored 32 during high-speed milling of wrought aluminum alloys by Niknam and Songmene. da Silva et al. investigated 33 on burr dimensions in face milling of stainless steel. Tool geometry and radial depth were found to affect burr height the most, but the method of cutting fluid application was experienced to have little effect on burrs. ...
Article
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... Dans cette étude, on a opté pour la deuxième méthode qui est plus significative en matière de répartition de bavure surtout que la bavure a tendance à fermer les cellules alvéolaires (voir Figure II. 17), [145,[149][150][151][152][153][154][155][156]. La difficulté rencontrée lors de la quantification de la bavure est la définition de la limite entre la géométrie de la cellule et la bavure, Figure II A l'aide de l'interféromètre Bruker® présenté précédemment, des mesures sont effectuées sur les cellules de nid d'abeilles. ...
Thesis
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... Another burr description is according to burr shapes, burr locations and burr formation mechanisms. 13 Figure 2 shows the burrs types in face milling process which includes entrance burr, exit burr, side burr and top burr. The exit burr is defined as a burr attached to machined edge at the end of milling. ...
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... Poisson burr (a), rollover burr (b), tear burr (c), and cut off burr (d) (adapted from da Silva et al.[16] and Gillespie and Blotter[1]) ...
Article
During machining, burrs are produced along a part's edges, which can affect a final product lifetime or its efficiency. Moreover, time-consuming and expensive techniques are needed to be applied to remove such burrs. Therefore, companies attempt to reduce burrs formation during machining by manipulating the cutting conditions. This study aims to analyze and quantify the effect of a wide number of parameters on burr formation, resulting from different mechanisms, during orthogonal cutting of AlSi alloys. A highly developed experimental methodology combining high-speed camera recording, laser scanning, and in situ deburring system is used for this study. A statistical analysis is then applied to evaluate relations between controlled parameters and the occurrence of exit burrs morphologies. The results show that the uncut chip thickness influences burr types distribution along the exit edge and chamfer geometry. Among the cutting parameters and tool geometry, tool rake angle is the main parameter affecting burr height. Finally, it is found that none of the burrs geometrical characteristics ranges are piloted by cutting parameters or tool geometry. The assumption of a possible microstructural influence on these outputs is made.
... This sideward burr accumulation is for instance the cause of high lateral burr height during shoulder milling. Likewise, during their studies on burr behaviour of face milling on stainless steels, Da Silva et al. (2015a) showed that if no deburring operation is carried out between two passes, milling burr height increases. On the contrary, deburring between each pass leads to a repeatable burr height. ...
... Overall, it was concluded that the performance shown was comparable to that from flood cooling with it being noted that the direction of the MQL nozzles is particularly important in the evaluation of tool wear as it is imperative that lubrication occurs between the chip and rake face [66]. With regard to surface quality in the milling of steels, it was concluded that cooling conditions did not affect burr height whereas the geometry of the milling cutter tool did [67]. ...
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Full-text available
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