Deep-hole Drilling in Stainless Steel with Small Diameter Twist Drills
In this paper results of mannfacturing tests are described done in order to evaluate the performances of twist drills of diameter d=1.2mm and 1.4 mm respectively,if boring into stainless steel X90CrMoVl8(1.4112)．Deephole drilling was realized thus,that the depth of the bore hole was greater than 10 times the diameter of the twist drill (L/d>10)． In order to reduce the impact on the environment caused by the coolant,it was found that minimum quantity Iubrication (MQL)can be applied．Hence,the ecology of the mass production of perforated discs for the food processing industry can be improved．The performance of the severaIl small diameter twist drills was determined and evaluated by．firstly, their deep-hole drilling capability，e.g．assessed by the variation or even increase of cutting forces with increasing depth and travel,whether the forces exceed a critical level due to poor chip extraction．In addition,the suitability．to use or rather implement the difierent small diameter twist drills for high-speed cutting(HSC)and finally the individual tool service life for each investigated twist drill．This research project has shown that the accomplishable performance and operating time are strongly dependent on tool cutting material and the tool geometrv,especially the size of the chip flutes of a twist drill．as well as the individual coating of the cutting tools． Manufacturing;minimum quantity lubrication;
MQL deep-hole drilling stainless steel twist drills
Gerhard Petuelli Christoph Nentwig
Department of Mechanical and Automation Engineering,South Westphalia University of Applied Science Soest,Germany
国际会议
海口
英文
410-414
2011-02-22（万方平台首次上网日期，不代表论文的发表时间）