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          <h1 class="tit">数控机床代码基本编程</h1>
          <span class="time">发布时间:2021-12-20 16:58:00</span> <span class="from">阅读数: 1788</span> </div>
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         <p>　　1.数控编程指令——外圆切削循环指令：G90X(U)_Z(W)_F_;例：G90X40.Z40.F0.3;X30.;X20.;</p><p>　　2.数控编程指令——端面切削循环指令：G94X(U)_Z(W)_F_;例如：G90X40.Z-3.5.F0.3;Z-7.;Z-10.;</p><p>　　3.数控编程指令——外圆粗车循环指令：G71U_R_;G71P_Q_U_W_F_;精车：G70P_Q_F_;U每次进给量，R每次退刀量，P循环起始行号，Q循环结束行号，U精加工径向余量，W精加工轴向余量。</p><p>　　4.数控编程指令——端面粗车循环指令：G72W_R_;G72P_Q_U_W_F_;精车：G70P_Q_F_;(字母含义同3)</p><p>　　5.数控编程指令——固定形式粗车循环指令：G73P_Q_I_K_U_W_D_F_;I粗车是径向切除的总余量(半径值)，K粗车是轴向切除的总余量，D循环次数,(其余字母含义同3).</p><p>　　6.数控编程指令——刀尖半径补偿指令指令：G41G01G42X(U)_Z(w)_;G00G40注意：</p><p>　　(1).G41,G42,G40指令不能与圆弧切削指令写在同一程序段内。</p><p>　　(2).在调用新刀具前或更改刀具补偿方向时，必须取消前一个刀具补偿。字串</p><p>　　(3).在G41或G42程序段后面加G40程序段，便可以取消刀尖半径补偿。</p><p>　　7.数控编程指令——锥面循环加工指令：G90X(U)_Z(W)_I_F_;例如：G90X40.Z-40.I-5.F0.3;X35.X30.I切削始点与圆锥面切削终点的半径差。</p><p>　　8.数控编程指令——带锥度的端面切削循环指令指令：G94X(U)_Z(W)_K_F_;K端面切削始点至终点位移在Z方向的坐标值增量值。</p><p>　　9.数控编程指令——简单圆弧加工指令：G02I_K_X(U)_Z(W)_F_;G03R_;</p><p>　　10.数控编程指令——深空加工指令：G74R_;G74Z(W)_Q_;R每次加工退刀量，Z钻削总深度，Q每次钻削深度，</p><p>　　11.数控编程指令——G75指令格式指令：G75R_;G75X(U)_Z(W)_P_Q_R_F_;R切槽过程中径向(X)的退刀量，X最大切深点的X轴绝对坐标，Z最大切深点的Z轴绝对坐标,P切槽过程中径向(X)的退刀量(半径值)，Q径向切完一个刀宽后，在Z的移动量，R刀具切完槽后，在槽底沿-Z方向的退刀量。</p><p>　　12.数控编程指令——子程序调的用指令：M98P********;例如：M98P42000;字串7表明调用子程序2000两次。M98P2;表明调用2号程序一次。</p><p>　　13.数控编程指令——等螺距螺纹切削指令指令：G32(U)_Z(W)_F_;X,Z为螺纹终点的绝对坐标，例如：G32X29.Z-35.F2.;G00X40.;Z5.;X28.2;G32Z-35.F0.2;G00X40.;Z5.;X28.2;</p><p>　　14.数控编程指令——螺纹切削固定循环指令指令：G92X(U)_Z(W)_R_F_;R=0时切削圆柱螺纹。例如：G92X29.Z-35.F0.2;X28.2;X27.6;X27.4;</p><p>　　15.数控编程指令——多线螺纹切削指令指令：X(U)_Z(W)_F_P_;F长轴方向的导程。P螺纹线数和起始角。例如：</p><p>　　G33X34.Z-26.F6.P2=0;G01X28.F0.2;G00Z8.;G01X34.F0.2;G33Z-26.F6.P2=18000;G01X28.F0.2;G00Z8.;</p><p>　　16.数控编程指令——G76指令格式指令：G76GmraQ_R_;G76X(U)_Z(W)_R_P_Q_F_;m精加工重复次数，r倒角量，a螺纹刀尖角度，Q最小被吃刀量(半径值)，单位为微米。R精加工余量(半径值)，单位为毫米。G76X(U)_Z(W)_R_P_Q_F_;R螺纹半径值(半径值)，P螺纹牙深(半径值)，单位为微米。Q第一次切削深度(半径值)，单位为微米。F螺纹导程。单位为毫米。</p><p>　　17.数控编程指令——变导程螺纹加工(G34)指令：G34X(U)_Z(W)_F_K_;F长轴方向导程，单位为毫米K主轴每转导程的增量或减量，单位为毫米每转。</p><p><br/></p>
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