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我厂有几台七十年代初生产的X6EW、X52K升降台铣床,在使用中常常发生进给运动阻断故障。这是由于机床进给机构可靠性差造成的。 原来,在机床进给变速箱部分采用的是牵引电磁铁、拉杆、爪式离合器。当快速进给时,在牵引电磁铁的作用下,爪式离合器接合,实现快速运动。由于牵引电磁铁剩磁较大,铁芯运动常常失误,致使爪式离合器不能可靠地工作而影响了机床的正常功能。 针对上述问题,参考有关资料,我对该设备的进给机构进行了改造。把原结构上的牵引电磁铁以及变速箱内第Ⅵ轴上的爪式离合器及部分相关零件拆去,然后在第Ⅵ轴上装两上DLM—25电磁离合器(见图),两电磁离合器通过电气控制相互联锁。当工作进给时,快速进给离合器脱开;当快速进给时,工作进给电磁离合器脱开。这样,
I have a few plants produced in the early seventies X6EW, X52K lifting table milling machine, often in use, feed motion blocking fault. This is due to the poor reliability of the machine feed mechanism. It turned out that in the machine tool to feed the transmission part is used to pull the solenoid, rod, claw clutch. When the rapid feed, under the action of the traction electromagnet, the claw clutch engages to achieve fast motion. Due to the large remanence of the traction electromagnet, iron core movements are often mistakes, resulting in claw clutches can not work reliably and affect the normal function of the machine tool. In response to the above issues, with reference to the relevant information, I modified the feed mechanism of the device. The original structure of the traction electromagnet and the transmission shaft Ⅵ claw clutch and some related parts removed, and then mounted on the VI axis DLM-25 electromagnetic clutch (see photo), the two electromagnetic clutch through the electrical Control interlock with each other. When the work is feeding, the rapid feed clutch is disengaged; when fast feed, the working feed electromagnetic clutch is disengaged. such,