Angle drill bit crack#

Attia, Wear mechanisms and tool life management of WC-Co drills during dry high speed drilling of woven carbon fibre composites, Wear, 267 (5) (2009) 1022–1030. Abrivard, Hole surface topography and tool wear in CFRP drilling, Procedia CIRP, 45 (2016) 35–38. Kara, Wear on SiAlON ceramic tools in drilling of aerospace grade CFRP composites, Wear, 338 (2015) 11–21. Schneider, A comparative study on tool wear and laminate damage in drilling of carbon-fiber reinforced polymers (CFRP), Compos. Hodzic, The applicability of Taylor’s model to the drilling of CFRP using uncoated WC-Co tools: The influence of cutting speed on tool wear, International Journal of Machining and Machinability of Materials, 16 (2) (2014) 95–112. Kurniawan, Effect of machining parameters on tool wear and hole quality of AISI 316L stainless steel in conventional drilling, Procedia Manufacturing, 2 (2015) 202–207. Rahman, The effects of tool degradation on hole straightness in deep hole gundrilling of Inconel-718, Procedia CIRP, 14 (2014) 593–598.Ī.

Cheng, Secondary cutting edge wear of one-shot drill bit in drilling CFRP and its impact on hole quality, Compos.

Wang, Novel drill structure for damage reduction in drilling CFRP composites, Int. Attia, Wear mechanisms and tool life management of WC-Co drills during dry high speed drilling of woven carbon fibre composites, Wear, 267 (5–8) (2009) 1022–1030. Attia, Characterization of the dry high speed drilling process of woven composites using machinability maps approach, CIRP Ann-Manuf. Davim, The effect of cutting tool geometry on thrust force and delamination when drilling glass fiber reinforced plastic composite, Mater. Chen, Drilling machinability evaluation on new developed high-strength T800S/250F CFRP laminates, Int. Pfeifroth, Influence of point angle on drill hole quality and machining forces when drilling CFRP, Procedia CIRP, 1 (7) (2012) 471–476. Xirouchakis, Experimental analysis of drilling fiber reinforced composites, Int. Bhatnagar, Drilling of uni-directional glass fiber reinforced plastic (UD-GFRP) composite laminates, Int. Davim, Experimental delamination analyses of CFRPs using different drill geometries, Compos. Miguelez, Influence of special tool geometry in drilling woven CFRPs materials, Procedia Engineering, 132 (2015) 632–638. Weinert, Cutting edge rounding: An innovative tool wear criterion in drilling CFRP composite laminates, Int. Zhang, Delamination analysis of the helical milling of carbon fiber-reinforced plastics by using the artificial neural network model, J. Hocheng, Parametric study on thrust force of core drill, J. Krishnamurthy, A neural network thrust force controller to minimize delamination during drilling of graphite-epoxy laminates, Int. Cho, Influence of cutting temperature on carbon fiber-reinforced plastic composites in high-speed machining, J.

Angle drill bit crack#

Arakawa, AE analysis of delamination crack propagation in carbon fiber-reinforced polymer materials, J. Consequently, a double-point angle drill bit is preferable for drilling holes on CFRP.

The damage of missing fibers does not worsen with an increase in tool wear, but the damage of fiber pullout becomes more serious due to increased cutting force. Outer corner wear and flank wear were investigated, and hole wall damage mechanisms were discussed. Then, the double-point angle drill was used to determine the effects of tool wear on thrust force and hole wall damage. The maximum damage ring caused by the double-point angle drill is smaller than that caused by the twist drill because the drop speed of the cutting force in the secondary cutting edge drill during the exit stage of the double-point angle drill is less than that of the twist drill. First, a comparative study between hole exit damage caused by a twist drill and a double-point angle drill was conducted to investigate the influences of the chisel, principal, and secondary cutting edges on hole exit damage. This study aims to study the effect of the cutting edge type on the aforementioned issues. The control of hole exit damage and hole wall quality poses a considerable challenge during the drilling of carbon fiber-reinforced plastic (CFRP).