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提高快速移动的速度,对于提高组合机床及其自动线的生产率具有重大的意义。在具有大量液压化辅助机构和节拍时间较短的自动线上,快速移动所用的时间比重很大,约占工作循环时间的50％。对于这种组合机床和自动线,在计算动力部件向被加工零件的引进时间时,必须考虑到:由快速引进到工作进给的转换过程的时间和刀具以工作进给速度向被加工件切入的时间。还应当考虑到,电气、液压设备的起动时间有先有后,转换时制动行程长短也不一致(由于移动时阻力的变化,液压系统油温增高使传动速度变化以及变形等原因造成),这都能引起转换点的不精确。
Increasing the speed of rapid movement is of great importance for increasing the productivity of a combination machine and its automatic lines. On automatic lines with a large number of hydraulically-assisted mechanisms and short takt times, fast-moving takes a significant amount of time, accounting for about 50% of the duty cycle. With this type of combined machine and automatic line, it is necessary to take into account the time taken for the transition from the rapid traverse to the working feed and the cutting speed of the tool to be machined at the working feed rate time. It should also be taken into account that the start-up times of the electrical and hydraulic equipment are not the same after the start-up of the brake and the length of the brake stroke during the shift (due to the change of the resistance during the movement, the increase of the oil temperature of the hydraulic system, the change of the transmission speed and the deformation) Can cause the conversion point is not accurate.