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机床维修-选用的是半闭环伺服系统,机床恢复了正常
来源: 本站 作者: admin 发布时间: 2016-02-21 0 次浏览 分享: 新浪
机床主轴维修鉴于本机床选用的是半闭环伺服系统,为了辨明缘由,修补的第一步是松开Z轴伺服电动机和滚珠丝杠之间的机械联接。在Z轴无负载的情况下,作业加工程序,以差异机械、电气缺点。经试验发现:缺点仍然存在,但发生缺点的时间有所延
机床主轴维修鉴
于本机床选用的是半闭环伺服系统, 为了辨明缘由, 修补的第一步是松开Z 轴伺服电动机和滚珠丝杠之间的机械联接。在Z 轴无负载的情况下,
作业加工程序, 以差异机械、电气缺点。经试验发现: 缺点仍然存在, 但发生缺点的时间有所延伸。因此, 可以供认缺点为电气缘由,
并且和负载大小或温升有关。
由
于数控机床伺服进给系统包含了CNC 、伺服驱动器、伺服电动机维修三大多数, 为了进一步辨明缘由, 修补的第二步是将CNC 的X 轴和Z
铀的速度给定和方位反响交流(CNC 的M6 与M8,M7 与M9 交流),即:运用CNC 的X 轴指令控制车床的Z 轴伺服和电动机运动,CNC
的Z 轴指令控制车床的X 轴伺服和电动机运动, 以区分缺点发生在CNC 或伺服。经更换发现, 此刻CNC 的Z 轴( 带X 轴伺服及电动机)
运动正常, 但X 轴(带Z 轴伺服及电动机)运动时出现振荡。据此,可以供认: 控制Z 轴的CNC 正常, 缺点在Z 轴伺服驱动或伺服电动机上。
考
虑到该车床X 、Z 轴选用的是同系列的AC 伺服驱动, 其伺服PCB 板类型和标准一样, 为了进一步减小查看规划,
修补的第三步是在恢复第二步CNC 和X 、Z 伺服间的正常联接后, 将X 、Z 的PCB 板经过调整设定后交流。经交流发现, 这时X
轴作业仍然正常,Z 轴缺点照常。可见,Z 轴的PCB 板正常。
依据以上试验和查看, 可以供认缺点是由于Z 轴伺服主回路或伺服电动机的不良而导致的。
经以上维修,机床恢复了正常。
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