Каталог Iscar дисковые фрезы и фрезерные пластины 2022 - страница 121

THREAD MILLING TOOLS USER GUIDE Thread Milling CNC Program for Internal Thread Internal Thread Right-hand thread (climb milling) from bottom up. Example: M 48x2.0 IN-RH Program is based on tool center. (Thread depth 25 mm) This method of programming needs no tool radius Toolholder: MTSR0029 J30 compensation value other than an offset for wear. (Cutting dia. 29 mm) Insert: MT30 I2.0ISO A = Do –2 D A = Radius of tool path A =(Do-D)/2=(48-29)/2=9.5Do =Major thread diameterA/2=4.75 D = Cutting diameter (Tool compensation of radius=0) G90 G0 G54 G43 G17 H1X0 Y0 Z10 S1320 G0 Z-25 General Program G01 G91 G41 D1X 4.75 Y-4.75 Z0 F41 G90 G00 G54 G43 H1X0 Y0 Z10 S... G03 X4.75 Y4.75 R4.75 Z0.25 G00 Z-(to thread depth) G03 X0 Y0 I-9.5 J0 Z2.0 G01 G91 G41 D1 X(A/2) Y-(A/2) Z0 F... G03 X-4.75 Y4.75 R4.75 Z0.25 G03 X(A/2) Y(A/2) R(A/2) Z(1/8 pitch) G01 G40 X-4.75 Y-4.75 Z0 G03 X0 Y0 I-(A) J0 Z(pitch) G90 G0 X0 Y0 Z0 G03 X-(A/2) Y(A/2) R(A/2) Z(1/8 pitch) M30 G01 G40 X-(A/2) Y-(A/2) Z0 % G90 X0 Y0 Z0 Number of Radial Passes In order to produce a thread, in some cases Y+ one radial pass is sufficient but other times a number of radial passes are required. Major thread DO Dia. The table below presents ISCAR'srecommendations for the number of radialpasses depending on the material and lead. X- X+ D A A/2 A/2 Tool Path Y- 437