Improvement of Tool Life and Exit Burr using Variable Feeds when Drilling Stainless Steel with Coated Drills

Lin, Tsann-Rong; Shyu, Ruey Fang

doi:10.1007/s001700050162

Cited by 44 publications

(33 citation statements)

References 13 publications

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“…Lin and Shyu. [7] adopted Balazinski's research to the drilling process. They controlled the feedrate in a sine wave form to reduce the drill wear.…”

Section: Introductionmentioning

confidence: 99%

Drilling torque control using spindle motor current and its effect on tool wear

Kwon

Chu

2004

Int J Adv Manuf Technol

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“…Lin and Shyu. [7] adopted Balazinski's research to the drilling process. They controlled the feedrate in a sine wave form to reduce the drill wear.…”

Section: Introductionmentioning

confidence: 99%

Drilling torque control using spindle motor current and its effect on tool wear

Kwon

Chu

2004

Int J Adv Manuf Technol

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“…Some worthwhile experimental investigations into vibration drilling have been made in previous papers and good results have been achieved. Variable feed machining, as one kind of vibration drilling, is a significant method for improving the cutting tool life and decreasing exit burr for hard and difficultto-machine materials [1]. Segmental chip can be formed [2] and be easily ejected from the drilled holes by vibration drilling [3].…”

Section: Introductionmentioning

confidence: 99%

Effect of the cutting ratio on cutting forces and the drill life in vibration drilling

Wang

Zhao

2004

Int J Adv Manuf Technol

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In this paper, by analysing the axial cutting thickness and the cutting graphics, a new concept of cutting ratio K in vibration drilling is introduced for the first time. Cutting ratio K can show the proportion of cutting time in a cutting cycle and describe the working condition of the drilling during the vibration drilling. The relationship between cutting parameters and vibration parameters are denoted as two parameters, ω f and E. By computer program, the relationships between K and ω f is found; their characteristic are periodicity, symmetry and having many peak values. The curves, which describe the relation between K and E, are digressive. The regularity can be used to optimise the parameters in vibration drilling to achieve good machine performance. The experiment results indicate that the thrust, torque and the drill life are related to cutting ratio K . NotationA the amplitude of the axial vibration drilling, mm θ rotational angle of the drill, rad f feedrate per revolution, mm/r E ratio, E = 4 A/f F the frequency of the axial vibration drilling, Hz n rotation speed of drill, rev/min ω f number of vibration cycles per revolution, ω f = 60 F/n r radius on a certain point of the cutting edge t time t c cutting time of each cycle t i idle time of each cycle T vibration cycle x(t) displacement of the axial vibration acting on the drill

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“…Hardness value of these cutting tools was 65 HRc. Each cutting tool was used once in the experiments, and each experiment was repeated three times in accordance with the similar studies [9,[11][12][13][14]21,22]. The images of BUEs formed on the cutting tool as a result of the drilling processes were taken by means of Leo Evo 40 model Scanning Electron Microscope (SEM).…”

Section: Experimental Methodsmentioning

confidence: 99%

“…In addition, he determined that in high speed machining of stainless steels the tool life increased considerably in case of adjusting the feed rate to the values lower than 0,05 mm/rev. Lin and Syhu, studied on the treatment of the tool life and burr formation in the drilling of stainless steel with the drill bits coated by different materials [11]. Kurt et al, investigated the effect of cutting parameters on the drilling temperature, cutting force and surface roughness in the drilling of Al 2024 alloy with DLC coated drill.…”

Section: Introductionmentioning

confidence: 99%