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为了充分发挥硬质合金及金属陶瓷刀具的优点,要求机床应有更大的功率、更大的进给以及更高的切削速度。例如,Liebherr生产的LC82机床刀架,具有3000r/min的转速,驱动功率为18kW,预加载荷传动链结构驱动工作台,其转速可达450r/min。因此,用90mm直径的滚刀,机床的切削速度可达850m/min, Gleason工厂最近也推出一种新式的CNC滚齿机,即六轴Phoeni×125GH,以发挥高速切削刀具的性能。对HSS刀具,机床驱动滚刀轴转速为1500r/min;对硬质合金刀具,其转速可达3000r/min。 在这样高的切削速度下,即使短暂的空转也是不允许的,因为零件装夹、刀具更换和维护也将占总成本的一大部分,费用很高。通常Liebherr维持新机床连续运动的方法是设计中尽可能减少零件数量,使结构简化,减少失效率。
In order to give full play to the advantages of carbide and cermet tools, the machine should require more power, greater feed and higher cutting speed. For example, the Liebherr LC82 machine tool carrier with 3000 r / min speed and 18 kW of drive power drives a pre-loaded drive chain drive stage up to 450 rpm. As a result, with 90mm diameter hobs, machine speeds up to 850m / min, the Gleason plant recently introduced a new type of CNC hobbing machine, the six-axis Phoeni x 125GH, for high-speed cutting tool performance. For HSS tools, the speed of the machine tool driving hob axis is 1500r / min; for carbide tools, the speed can reach 3000r / min. At such high cutting speeds, even brief idling is not permitted as part mounting, tool changeover and maintenance will also account for a significant portion of the total cost, at a high cost. Usually Liebherr to maintain a continuous movement of the new machine tool is designed to minimize the number of parts, so that the structure is simplified to reduce the failure rate.