论文部分内容阅读
自动线的使用经验表明,化费在换刀上的时间可达自动线总停机时间的45％。缩短时间损失的途径之一就是进行成组换刀。恢复自动线工作能力所需要的时间取决于换刀方式和同时换刀的数目。而每一组刀具的数目又决定换刀所需时间。 一组刀具数目的最佳方案应该是使自动线达到最高的使用效率。在确定成组换刀的经济效果时,必须考虑到不可修复的废品和可修复的废品上的耗费,寻找报废刀具的耗费,以及在排除可能发生意外情况的后果方面由于占用了一部分工作时间的耗费。因此停车概率取决于工作时间的增量和分布的积分函数。
Experience with the use of automatic lines shows that the fee can be exchanged for 45% of the total downtime of automatic lines. One of the ways to reduce the time lost is to make a group change. The time required to resume automatic line work depends on the mode of tool change and the number of tool changes at the same time. The number of tools in each group also determines the time required for tool change. The best solution for the number of tools in a group should be to maximize the use efficiency of automatic lines. In determining the economic impact of a group knife change, the costs of irreparable waste and repairable waste must be taken into consideration, the cost of finding scrap tools and the potential for consequences arising from the possible unanticipated consequences must be taken into account Spent. The probability of parking therefore depends on the integral of the increment and distribution of working hours.