数控铣床常见故障及处理方法

2024年11月08日 04:48
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数控机床是目前机械零件加工等行业经常用到的机器,无论当它出现任何故障的时候,都不能正常工作,将会耽误生产,因此大家需要及时找到故障的原因及处理方法,所以对于数控机床常见故障处理方法做出了总结,
一、机床不能回零点
原因:
1,原点开关触头被卡死不能动作;
2,原点挡块不能压住原点开关到开关动作位置;
3,原点开关进水导致开关触点生锈接触不好;
4,原点开关线路断开或输入信号源故障;
5,PLC输入点烧坏。
对策: 1,清理被卡住部位,使其活动部位动作顺畅,或者更换行程开关;
2,调整行程开关的安装位置,使零点开关触点能被挡块顺利压到开关动作位置;
3,更换行程开关并做好防水措施;
4,检查开关线路有无断路短路,有无信号源(+24V直流电源) ;
5,更换I/O板上的输入点,做好参数设置,并修改PLC程式。

二、机床正负硬限位报警
正常情况下不会出现此报警,在未回零前操作机床可能会出现,因没回零前系统没有固定机械坐标系而是随意定位,且软限位无效,故操作机床前必须先回零点。
原因: 1,行程开关触头被压住,卡住(过行程);
2,行程开关损坏;
3,行程开关线路出现断路,短路和无信号源;
4,限位挡块不能压住开关触点到动作位置;
5,PLC输入点烧坏。
对策:1,手动或手轮摇离安全位置,或清理开关触头;
2,更换行程开关;
3,检查行程开关线路有无短路,短路有则重新处理。检查信号源(+24V直流电源);

4,调整行程开关安装位置,使之能被正常压上开关触头至动作位置;
5,更换I/O板上的输入点并做好参数设置,修改PLC程式。

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