数控车床是利用数字化信号对机床的运动及加工过程进行控制的车床，它涉及的领域很多，维修较为困难。在出现故障后，常常采用以下诊断方法来查找故障的具体位置及原因。

　　小数控车床故障诊断方法：

　　一、主机故障的诊断

　　DUIYUCHANGJIANDEXIAOXIAOSHUKONGCHECHUANGZHUJIGUZHANG，ZHENDUANDEFANGFABIJIAODUO，RULIYONGXIANJINCESHISHOUDUANDE“XIANDAIZHENDUANJISHU”HECHUANTONGDE“SHIYONGZHENDUANJISHU”DENG。

　　1、实用诊断技术

　　CIZHENDUANSHIYOUWEIHURENYUANTONGGUOZIJIDEGANJUEQIGUANHEJINGYANDUIXIAOSHUKONGCHECHUANGDEGUZHANGJINXINGZHENDUAN。YUNYONGSHIYONGZHENDUANJISHUDEZHENDUANGUOCHENGYINGUZHANGLEIXINGERYI，GEZHONGFANGFAWUXIANHOUZHIFEN，KECHUANCHAHUOTONGSHIJINXING，YINGZONGHEFENXI，FANGNENGQUDEGENGHAODEXIAOGUO。SHIYONGZHENDUANJISHUBUXUYAOFUZAANGGUIDEYIQI，KESUISHISUIDIJINXINGZHENDUAN，QIEKUAISU、BIANJIE、ZHUNQUEXINGJIAOGAO，TEBIESHIHEDUIJICHUANGJINXINGCHUBUZHENDUAN。

　　2、现代诊断技术

　　CIZHENDUANSHILIYONGZHENDUANYIQIHESHUJUCHULIDUIJICHUANGJIXIEZHUANGZHIDEMOUXIETEZHENGCANSHU，RUZHENDONG、ZAOSHENGHEWENDUDENGJINXINGCELIANG，JIANGCELIANGZHIYUGUIDINGDEZHENGCHANGZHIJINXINGBIJIAO，YIPANDUANJIXIEZHUANGZHIDEGONGZUOZHUANGTAISHIFOUZHENGCHANG，CONGERDUIJIXIEZHUANGZHIDEYUNXINGZHUANGTAIJINXINGYUBAOHEYUCE，BINGKEJINYIBUDUIJIXIEZHUANGZHIDEGUZHANGYUANYIN、BUWEIHEGUZHANGDEYANZHONGCHENGDUJINXINGDINGXINGHEDINGLIANGDEFENXI。LIYONGXIANDAIZHENDUANJISHUKEZAIJIXIEZHUANGZHIFASHENGGUZHANGDECHUQI，JISHIFAXIANGUZHANGDEBUWEI，BINGJINXINGWEIHU，CONGERKEBIMIANJIXIELINGJIANDEJINYIBUSUNHUAI。XIANDAIZHENDUANJISHURUJINYIDEDAOLEBUDUANDETUIGUANGHEYINGYONG。

　　二、电气系统故障的诊断

　　DUIYUXIAOSHUKONGCHECHUANGDEDIANQIXITONGDEGUZHANG，QIDIAOCHA、FENXIYUZHENDUANGUZHANGDEGUOCHENG，YEJIUSHIGUZHANGDEPAICHUGUOCHENG，YINCIQIGUZHANGZHENDUANDEFANGFAJIUTEBIEZHONGYAO。YIXIECHANGYONGDEZHENDUANFANGFAYOU：

　　1、自诊断功能法

　　LIYONGSHUKONGXITONGDEZIZHENDUANGONGNENG，JICHUBAOJINGXINXI，ZHISHIGUZHANGDEDAZHIQIYIN。

　　2、交换法

　　JIANGXIANGTONGDEMOKUAIHEDANYUANHUXIANGJIAOHUAN，GUANCHAGUZHANGZHUANYIDEQINGKUANG，CONGERKUAISUQUEDINGGUZHANGDEBUWEI。

　　3、仪器测量比较法

　　DANGXITONGFASHENGGUZHANGHOU，CAIYONGCHANGGUIDIANGONGJIANCEYIQI，DUIGUZHANGBUFENDEDIANYA、DIANYUAN、MAICHONGXINHAODENGJINXINGSHICE，JIANGZHENGCHANGZHIYUGUZHANGSHIDEZHIXIANGBIJIAO，KEYIFENXICHUGUZHANGDEYUANYINYUSUOZAIBUWEI。