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[机床知识]|数控加工中心七种对刀方法详解!

发布时间:2021-06-02 16:31:18

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  对刀是数控加工中心的主要操作和重要技能。在一定条件下,对刀精度可以决定零件的加工精度,同时对刀效率也直接影响数控加工的效率。仅仅知道对刀方法是不够的,还要知道数控系统的各种对刀方法以及这些方法在加工程序中的调用方法。同时要了解各种对刀方法的优缺点和使用条件。


  GENJUZHUZHOUZHUIKONGDELIANGZHONGFENLEI,


  对刀的目的是建立工件坐标系。直观地说,对刀是建立工件在机床工作台中的位置,实际上是求对刀点在机床坐标系中的坐标。对于数控车床,加工前应先选择对刀点。对刀点是指用数控机床加工工件时,刀具相对于工件运动的起点。对刀点可以设置在工件上(如工件上的设计基准或定位基准),也可以设置在夹具或机床上。如果设置在夹具或机床上的某一点,该点必须与工件的定位基准保持一定的尺寸关系。


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   GONGJUSHEZHIFANGFA


  在数控加工中心,对刀的基本方法包括试切法、对刀仪和自动对刀等。以数控铣床为例,介绍几种常用的对刀方法。


  1、SHIZHEQIEDAO


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  (1)x、yDUIDAO。


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  {-240.500 (-340.500)}/2=-290.500。


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  (5)JIANCHADUIDAOSHIFOUZHENGQUE。


  2.SAICHI、BIAOZHUNXINZHOUHEKUAIGUIDEGONGJUDUIZHUN


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  3.YONGZHAOBIANQI、PIANXINGANHEDUIZHOUQIDUIZHUNDAOJU。


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  4.ZHUANYI(JIANJIE)DUIDAO


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  为第一刀。

  (1)对于第一刀,仍先用试切法和塞尺法。记下此时工件原点的机床坐标z1。第一刀加工完成后,停止主轴。


  JIANGDUIDAOQIFANGZAIJICHUANGGONGZUOTAIDEPINGTAISHANG(RULAOHUQIANDEDABIAOMIAN)。


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  (2)DIERDAO。


  (1)ANZHUANGDIERBADAO。


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   5、DINGDAOFA


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  6.BAIFENBIAO(HUOQIANFENBIAO)DUIDAOFANGFA(YIBANYONGYUYUANXINGGONGJIANDUIDAO)


  (1)x、yDUIDAO。


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  7.ZHUANYONGDUIDAOZHUANGZHIDEDUIDAOFANGFA


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