Burr size optimisation

Minimising burr size in driiling integrating response surface methodoiogy with particie swarm optimisation... 

Key words drilling burr size Box-Behnken design of experiments response surface methodology particle swarm optimisation. 

It is observed from the optimisation results that for minimising burr size, the optimal cutting speed requirement is low, i.e. 8m/min irrespective of the drill diameter. On the other hand, as depicted in Figure 7.10, the requirement of optimal feed is in the low range (0.04-0.06mm/rev) and is in direct proportion to the drill diameter for the entire range specified. The reason might be that at lower feed thrust force reduces and hence forms thinner burrs. 

From the optimisation results, it is observed that the combination of optimal feed and point angle has played a key role in reducing the burr size for every drill diameter specified in the range 16-2 8mm. However, the different combinations of optimal feed and point angle are required for minimising the burr size. It is also revealed that, with the increase in drill diameter, simultaneous increase in feed and... 

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