Burr height and hole diameter error minimization in drilling of AL6063/15%/SiC composites using HSS step drills

Kamboj, Abhishek; Kumar, Sudhir; Singh, Hari

doi:10.1007/s12206-015-0612-1

Cited by 13 publications

(3 citation statements)

References 22 publications

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“…Effects of the number of drilled holes on variation in delamination factor during drilling (5000 rpm and 0.04 mm/rev). where error in dimension caused failure of human life [25]. Hole diameter is another measured parameter affected by the number of drilled holes and by the properties of work materials.…”

Section: Resultsmentioning

confidence: 99%

Drilling performance of functionally graded composite: Comparison with glass and carbon/epoxy composites

et al. 2017

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Functionally graded composite (FGC) materials are categorized as advanced materials that display different thermal and mechanical responses compared with well-known composites, such as carbon fiber or glass fiber-reinforced composites. This paper presents the experimental results for the drilling of three materials, namely glass/epoxy, carbon/epoxy, and FGC material. FGC was compared with carbon and glass/epoxy composites in terms of thrust force, delamination factor, diameter of hole, and roundness during drilling. This study illustrated that the drilling performance of FGC is considerably more complicated than that of more common composite materials, such as glass/epoxy and carbon/epoxy. Delamination factor at the exit of hole during drilling of FGC was mainly affected by the material placed at the exit of the hole. The proposed cutting parameters and drill geometries to minimize the occurrence of delamination during drilling of carbon/epoxy and glass/epoxy apparently does not meet the expectation in drilling FGC.

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Section: Resultsmentioning

confidence: 99%

Drilling performance of functionally graded composite: Comparison with glass and carbon/epoxy composites

et al. 2017

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“…Surface roughness at the top showed decreasing trend initially and then it started increasing with increase in speed, feed rate and peck depth. This is due to the fact that, higher spindle speed result in higher temperature (Kamboj et al, 2015), higher feed rate result in larger thrust forces, chip thickness, and hence, high temperature (Kurt et al, 2008), while higher peck depth result in large chip dimensions, and hence, higher temperature (Aized and Amjad, 2013). The individual desirability is 0.69818, which indicates that the settings need to be adjusted to increase the individual desirability and optimize the hole surface roughness at the top.…”

Section: Analyzes and Discussionmentioning

confidence: 99%

Simultaneous optimization of output parameters in HPC drilling using multi response optimization technique with desirability function approach

Shete

Sohani²

2020

WJE

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Purpose This paper aims to examine an investigation of high-pressure coolant (HPC) drilling process with regard to experimental models of output parameters, effect of input parameters on output parameters and simultaneous optimization of the output parameters. Design/methodology/approach Experimental plan was designed using response surface method and experiments were conducted on HPC drilling set up. Measurements for output parameters were carried out and mathematical models were obtained. Multi response optimization using a composite desirability function approach was used to obtain optimum values of input parameters for simultaneous optimization of output parameters. Findings Optimal value of input parameters for optimization of HPC drilling process were obtained as; coolant pressure: 21 bar, spindle speed: 3,970 rpm, feed rate: 0.084 mm/rev and peck depth: 5.50 mm. The composite desirability obtained is 0.9412, which indicates that the performance of HPC drilling process was significantly optimized. Developed mathematical models of the output parameters accurately represent the entire design space under investigation. Originality/value This is the first study that involves variation of higher coolant pressure and investigation of HPC drilling process using response surface methodology and multi response optimization technique with desirability function.

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“…Surface roughness at top and bottom of hole decrease with increase in spindle speed. As spindle speed increase, cutting time is reduced, which results in reduced thrust force, reduced workpiece distortion and hence, surface finish is improved [20]. From mean values of surface roughness given in the column of cutting speed of Table 7 and Table 9, surface roughness at top of hole was decreasing at comparatively faster rate than the surface roughness at bottom, when spindle speed was increased.…”

Section: Effect Of Spindle Speedmentioning

confidence: 97%

Effect of Process Parameters on Surface Roughness in HPC Drilling of AISI 1055 Steel

Shete¹,

Sohani²

2020

JMechE

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Data regarding the influence of high-pressure coolant on the performance of drilling process using design of experiment has been limitedly available. This paper presents the effect of higher coolant pressures along with spindle speed, feed rate and peck depth on the surface roughness of hole using Taguchi technique. Experimental set up was developed consisting of specially manufactured high-pressure coolant system and high-pressure adapter assembly attached to vertical machining center. Developed experimental set up has optimized utilization of non-through coolant vertical machining center in a small-scale industry. Experiments were conducted on AISI 1055 steel with TiAIN coated drill on the vertical machining center. Taguchi technique was used for design of experiment and analysis of results. Results revealed that the surface roughness improve till coolant pressure reaches to an optimum value of 13.5 bar and there after it decreases. Coolant pressure and spindle speed was the significant process parameters for the hole surface roughness. Surface roughness at the top of hole was considerably lower than the bottom of hole, under the action of all process parameters. Supply of coolant at high pressure has resulted in lower surface roughness even with large peck depth; which indicate that, manufacturing cost can be reduced with the use of high-pressure coolant in drilling.

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Burr height and hole diameter error minimization in drilling of AL6063/15%/SiC composites using HSS step drills

Cited by 13 publications

References 22 publications

Drilling performance of functionally graded composite: Comparison with glass and carbon/epoxy composites

Drilling performance of functionally graded composite: Comparison with glass and carbon/epoxy composites

Simultaneous optimization of output parameters in HPC drilling using multi response optimization technique with desirability function approach

Effect of Process Parameters on Surface Roughness in HPC Drilling of AISI 1055 Steel

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