用一把刀高质量加工多个孔径螺纹ppt课件

1、数控新技术系列课程-螺纹铣削 用一把刀高质量加工多个孔径螺纹 内螺纹加工表示图右旋螺纹:1234512345PitchPitch左旋螺纹:螺纹铣对孔径误差要求Drill TolerancesThread milling Method, Right Hand Thread 1(6)1. Position the cutter above the predrilled hole23456Thread milling Method, Right Hand Thread 2(6)2. Axial setting to thread depth13456编程时留意圆周和中心处不同的进给速度圆周进给 (v

2、f)中心点进给 (vfe)vfe =vf (D - d)DD: 螺纹直径d: 刀具直径利用vfe 对圆周进给进展补偿右手螺纹的加工编程1. ISO code for M6 internal thread milling with compensation:(M6) TG90 G17S6508 M3G00 G43 H. X0.000 Y0.000 Z2.000 G91G00 Z-10.500 G41 D.(RPGR value) G01 X0.000 Y2.250 F208 G03 X0.000 Y-5.250 Z0.500 I0.000 J-2.625 F25 G03 X0.000 Y0.00

3、0 Z1.000 I0.000 J3.000 F52 G03 X0.000 Y5.250 Z0.500 I0.000 J2.625 G40 G01 X0.000 Y-2.250 G00 Z8.500 G90234561Definitions other:T = Tool numberD = Compensation register (RPGR value)H = Tool length registerDefinitions G/M code:G00 = Rapid feedG01 = FeedG03 = Circular interpolation counter clockwiseG17

4、 = Work plane XYG40 = Radius comp. OutG41 = Radius comp. InG90 = Absolute positioningG91 = Incremental positioningM3 = Spindle start clockwiseM6 = Tool change1. Position the cutter above the predrilled hole(M6) T.(Choose and change tool)G90 G17(absolute positioning, xy plane)S6508 M3(Spindle speed a

5、nd spindle start clockwise)G00 G43 H. X0.000 Y0.000 Z2.000(2mm above work piece surface on centerline of thread)(H=tool length)G00 Z-10.500 G41 D. G01 X0.000 Y2.250 F208 G03 X0.000 Y-5.250 Z0.500 I0.000 J-2.625 F25 G03 X0.000 Y0.000 Z1.000 I0.000 J3.000 F52 G03 X0.000 Y5.250 Z0.500 I0.000 J2.625 G40

6、 G01 X0.000 Y-2.250 G00 Z8.500 G901Thread Milling2. Axial setting to thread depth(M6) TG90 G17S6508 M3G00 G43 H. X0.000 Y0.000 Z2.000 G91(incremental positioning)G00 Z-10.500(Move to required depth on centerline of the pre-drilled hole)G41 D. G01 X0.000 Y2.250 F208 G03 X0.000 Y-5.250 Z0.500 I0.000 J

7、-2.625 F25 G03 X0.000 Y0.000 Z1.000 I0.000 J3.000 F52 G03 X0.000 Y5.250 Z0.500 I0.000 J2.625 G40 G01 X0.000 Y-2.250 G00 Z8.500 G902Method, Right Hand Thread 2(6)33. Smooth engagement, 180. Z= x P(M6) TG90 G17S6508 M3G00 G43 H. X0.000 Y0.000 Z2.000 G91G00 Z-10.500G41 D. G01 X0.000 Y2.250 F208(Radius

8、comp. on)(D=RPGR value)G03 X0.000 Y-5.250 Z0.500 I0.000 J-2.625 F25(Move to the contour starting point) G03 X0.000 Y0.000 Z1.000 I0.000 J3.000 F52 G03 X0.000 Y5.250 Z0.500 I0.000 J2.625 G40 G01 X0.000 Y-2.250 G00 Z8.500 G9044. Milling of thread 360. Z=1 x P(M6) TG90 G17S6508 M3G00 G43 H. X0.000 Y0.0

9、00 Z2.000 G91G00 Z-10.500 G41 D. G01 X0.000 Y2.250 F208 G03 X0.000 Y-5.250 Z0.500 I0.000 J-2.625 F25G03 X0.000 Y0.000 Z1.000 I0.000 J3.000 F52(Thread milling) G03 X0.000 Y5.250 Z0.500 I0.000 J2.625 G40 G01 X0.000 Y-2.250 G00 Z8.500 G9045. Retraction 180. Z= x P(M6) TG90 G17S6508 M3G00 G43 H. X0.000

10、Y0.000 Z2.000 G91G00 Z-10.500 G41 D. G01 X0.000 Y2.250 F208 G03 X0.000 Y-5.250 Z0.500 I0.000 J-2.625 F25 G03 X0.000 Y0.000 Z1.000 I0.000 J3.000 F52G03 X0.000 Y5.250 Z0.500 I0.000 J2.625 (Move clear of the contour)G40 G01 X0.000 Y-2.250(Radius comp. off)G00 Z8.500 G9066. Thread completed(M6) TG90 G17S6508 M3G00 G43 H. X0.000 Y0.000 Z2.000 G91G00 Z-10.500 G41 D. G01 X0.000 Y2.250 F208 G03 X0.000 Y-5.250 Z0.500 I0.000 J-2.625 F25 G03 X0.000 Y0.000 Z1.000 I0.000 J3.000 F52 G03 X0.000 Y5.250 Z0.500 I0.000 J2.625 G40 G01 X0.000 Y-2.