G90-内外圆柱面车削循环指令•一、在FNUCOi-TA/TB•格式:G90X(U)—Z(W)—R—F—•其中:R(D-d/2)半径差,车园锥面时用,省略为圆柱面。•路径是:以“切入”—“切削”—“退刀”—“返回”例如:毛坯直径Φ45mm、车削Φ30•G98G21G40•G00X50Z50•M03S600T0101•G00X50Z2•G90X40Z-20F120•X36•X34•X30.5•G01X30F60•Z-20•G00X50Z50•M30•2、车锥面•G98G21G40•G00X50Z50•M03S600T0101•G00X45Z2•G90X40Z-25R-10F100•X36•X32•X30.5•X30F60•G00X50Z50•M30二、GSK928TE—广数车床•1、格式:•G90X(U)—Z(W)—R—F—•2、其中:•X(U)、Z(W)—圆柱(锥)面终点位置,两轴坐标必须齐备,相对坐标不能为零。•R—循环起点与循环终点的直径之差,省略R为轴面切削•F—切削速度•一、车圆柱面:•G0X50Z50•M03S2T11•G0X50Z2•G90X40Z-20F100•X35•X30.5•G01X30F50•Z-20•G0X50Z50•M30•二、车锥面:•G0X50Z50•M03S2T11•G0X35Z5•G90X30Z-25R-5F100•X30Z-25R-10•X30Z-25R-15•X30Z-25R-20•G0X50Z50•M30作业:1、材料毛坯直径32X50mm2、要求用两种方式编程⑴⑵G33-—螺纹切削•GSK928TE/TC——广州数控车床•一、G33—单步螺纹切削•指令格式:G33X(U)Z(W)P(E)KI•其中:X(U)Z(W)—螺纹终点的绝对/相对坐标(省略X时为直螺纹)•P—公制螺纹导程,单位:mm•范围:0.25—100mm•E—英制螺纹导程,单位:牙/英寸。•范围:100—0.25牙/英寸•K—螺纹退尾起点距螺纹终点在z方向的长度,•单位:mm.•(省略时无退尾)•加工直螺纹时:•k0时、螺纹退尾时x轴向正方向移动。•k0时、螺纹退尾时x轴向负方向移动。•加工锥螺纹时:•k的符号必须与x轴的移动方向相同。•I—螺纹退尾时x方向的移动总量(直径值)•单位、mm•有k值时但省略I时,系统默认为I=2xk既45°•G33指令可以加工公英制等螺纹的直螺纹、锥螺纹、内螺纹、外螺纹、等常用螺纹。7、常用螺纹切削的进给次数与吃刀量米制螺纹螺距1.01.522.533.54牙深(半径量)0.6490.9741.2991.6241.9492.2732.5981次0.70.80.91.01.21.51.52次0.40.60.60.70.70.70.83次0.20.40.60.60.60.60.64次0.160.40.40.40.60.65次0.10.40.40.40.46次0.150.40.40.47次0.20.20.48次0.150.3(直径量)切削次数及吃刀量9次0.2英制螺纹牙/in2418161412108牙深(半径量)0.6780.9041.0161.1621.3551.6262.0331次0.80.80.80.80.91.01.22次0.40.60.60.60.60.70.73次0.160.30.50.50.60.60.64次0.110.140.30.40.40.55次0.130.210.40.56次0.160.4(直径量)切削次数及吃刀量7次0.17例题1:一、材料Q235Φ32×50mm二、刀具、第一把刀90°外圆刀第二吧刀60°螺纹刀•要求:1、先分析零件图•2、计算螺纹的牙高、大径、小径原始三角形牙高H0.866p高度h=5/8H=5/8×0.866p=0.5413p外圆螺纹中径d2=d-2×3/8H=d-0.6495p小径d1=d-2h=d-1.0825p中经D2=d2内圆螺纹小径D1=d1大径D=d=公称直径•一、分析零件图:•先车削外圆Φ30×28mm•切槽3×2•再车螺纹M30×1.5•二、计算:•小径d1=d-2h=d-1.0825p•=30-1.0825×1.5•≈28.38•中径d2=d-2×3/8=d-0.6495p•=30-0.6495×1.5•≈29.03•牙形高度h=0.54p=0.54×1.5=0.81三、编程•G0X50Z50•M03S2T11------外圆刀•G0X30.5Z2•G1Z-25F100•G0X32Z0•G1X0F50•X26•X29.85Z-2•Z-25•G0X50Z50•T22-------切槽刀•G0X37Z-25•G1X26F50•G0X37•Z50•T33--------螺纹刀•G0X33Z5•G1X29----------(进刀0.85mm)•G33Z-22P1.5K1.5F80•G0X33•Z5•G1X28.5-------------(进刀0.5mm)•G33Z-22P1.5K1.5•G0X33•Z5•G1X28.37----------(进刀0.13mm)•G33Z-22P1.5K1.5•G0X33•Z50•M30螺纹导程2mm切深2.5m(直径值,两次切入)。例2、车削螺纹5502.5ZM25×210N0000G0X25Z5N0010G1X23.5F100N0020G33Z-50P2K2.5N0030G0X26N0040Z5N0050G1X22.5N0060G33Z-50P2K2.5N0070G0X26N0080Z51、编出下图程序作业X7610FANUC系统—螺纹切削指令G32/G34常用普通螺纹切削的进给次数与背吃刀量螺纹/mm1.01.52.02.53.0总切深量/mm1.21.82.43.03.6每次背吃刀量/mm1次0.81.11.21.31.42次0.30.50.60.70.73次0.10.10.40.50.64次0.10.10.30.45次0.10.10.36次0.10.17次0.18次•一、等螺距直螺纹•1、指令格式:•G32X(U)__Z(W)___F___Q___;•其中:X(U)Z(W)直线螺纹的终点坐标;•F;直线螺纹的导程。如果是单线螺纹,则为直线螺纹的螺距;•Q;螺纹起始角。该值为不带小数点的非模态值,其单位为0.001°。如果是单线螺纹,则该值不用指定,这时该值为0.•在指令格式中:当只有z向坐标数据字z(w)__时,为加工圆柱螺纹。•当只有x向坐标数据字x(u)__时,为加工端面螺纹。例题2.如前零件图•1、分析零件图•2、计算:大经、小径•3、编程:•O0300•N0010G98G21G40----(程序初始化)•N0020G00X100Z100----(定工件坐标快速移动到X100Z100)•N0030T0101M03S600---(第一把刀、开主轴正转、转速600)•N0040G00X35.5Z3----(引刀至X35.5Z3)•N0050G01Z-35F100----(粗车外圆柱Φ35)•N0060G00X36Z0------(退刀)•N0070G01X0F50-----(车端面)•N0080G00Z0.1------(退刀0.1)•N0090X26------(X轴退刀到X26倒角起点)•N0100G01X29.85Z-2------(倒角2×45°)•N0110G00X100Z100----(退刀至工件坐标X100Z100)•N0120T0202S150-------(换切刀)•N0130G00X36Z-28-----(引刀)•N0140G01X26F50------(切槽到Φ26)•N0150G00X29.86---------(退刀到Φ29.86)•N0160W2---------(Z轴退刀、相对坐标)•N0170G01X25.85W-2--------(倒角)•N0180G00X100---------(退刀)•Z100•N0190T0303S600--------(换螺纹车刀)•N0200G00X35Z3-----(引刀)•N0210X29------(进刀车第一刀0.85mm)•N0220G32Z-25F2.5---(车螺纹)•N0230G00X35-----(退刀)•N0240Z3•N0250X28.5----(进刀车第二刀0.50mm)•N0260G32Z-25F2.5•N0270G00X35•N0280Z3•N0290X28.4----(进刀车第三刀0.1mm)•N0300G32Z-25F2.5•N0310G00X35•N0320Z3•N0330X28.35-----(进刀车第四刀0.05mm)•N0340G32Z-25F2.5•N0350G00X100•N0360Z100•N0370M30NNNNNNNN