车削M30x2

车削图示 M30x2-6g 的普通螺纹

由GBl97—81知该螺纹大径为Φ30  mm 所以编程大径取为Φ29. 7mm，设牙底由单一圆弧形状构成，取圆弧半径为R =1/8H =0.2.则编程小径为

    d’=30-7/4×0.866×2+2×0.2-0.038-0.17/2=27.246取编程小径为Φ27.3mm

  加工程序如下

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">%0005

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">nnecttype="rect" gradientshapeok="t" o:extrusionok="f">N01 G92 X270.0 Z260.0

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">N02 M03 S800 

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">T0101

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">N03 G00 X35.0 Z104.0

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">G00 G90 X28.9

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">N04 G32 G91 Z-53.0 F2.0

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">G00 G91 X100.0

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">G00 Z53.0

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">G00 G90 X28.2

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">N05 G32 G91 Z-53.0 F2.0

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">G00 G91 X100.0

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">G00 Z53.0

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">G00 G90 X27.7

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">N06 G32 G91 Z-53.0 F2.0

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">G00 G91 X100.0

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">G00 Z53.0

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">G00 G90 X27.3

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">N07 G32 G91 Z-53.0 F2.0

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">G00 G91 X100.0

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">G00 Z53.0

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">T0000

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">N08 G00 X270.0 Z260.0

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">N09 M05

normal style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">N10 M30