（1）<span style="font-family: 宋体; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">机械及液压系统  <span style="font-family: 宋体; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">作为机床的zui终用户，厂方必须首先要确认，该机床机械及液压系统的状况。如：目前机床的精度，机械传动链的状况，丝杠、导轨的状况，有无重大故障等，以确定机床是大修、项修。如果是非数控机床要改为数控机床，

<span style="font-family: 宋体; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">首先要考虑机械改装的可行性，zui重要的是导轨的形式及滚珠丝杠的安装。再有就是机械传动机构的传动间隙与传动刚度是否符合数控机床的要求。

   （2）<span style="font-family: 宋体; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">电气系统在做数控机床改造方案时，用户可以根据机床的状态及工艺要求来选择数控系统。其一，是选择数控制造厂商，目前世界上性能及信誉较好的有：西门子（<span style="font-family: 宋体; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">德国）<span style="font-family: 宋体; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">、发那科（<span style="font-family: 宋体; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">日本）<span style="font-family: 宋体; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">、三菱（<span style="font-family: 宋体; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">日本）<span style="font-family: 宋体; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">、num（<span style="font-family: 宋体; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">法国）<span style="font-family: 宋体; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">、fagor（<span style="font-family: 宋体; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">西班牙）<span style="font-family: 宋体; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">等。用户可在详细了解上述厂商数控系统的特点及性能价格比等指标的基础上，与实施改造的工程公司一道，选择一个比较适合的数控系统。