l parts are from the same ma te rial

l parts are from the same ma te rial


o


G71 and G70 mul ti ple re pet i tive cy cles will be used two block format


o


No back op er a tion will be in cluded


part-off and sec ond ary operation


o


metal hole punch


Cool ant will be used


Ev ery setup can be im proved – this is only a sug ges tion and also il lus tra tive method used for the


ex am ple The pro ject fo cuses on macro de vel op ment only


The ac tual toolpath can also be de fined in detail:


o


Step 1 – Rapid to wards the part for fac ing cut


o


Step 2 – Face off the front just be low cen ter line


o


Step 3 – Rapid to the start point of the G71 cy cle


o


Step 4 – Rough out the shape – leave suitable stock


o


Step 5 – Fin ish the shape with G70


In five sim ple steps the ma chin ing is com pleted Two tools can be used in stead of one and other


changes can be made as well


Copyright busbar sawing machine 2005, Industrial Press Inc, New York, NY – FANUC CNC Custom Macros


FAMILY OF SIMILAR PARTS


211


Draw ing Sketch


Even for sim ple parts, a good draw ing sketch helps vi su al ize the toolpath and data as so ci ated


with it, such as clear ances Fig ure 28 shows the part con tour used for the G71 and G70 cy cles


F


SP


D


E


COMMON TOOLPATH FOR


G71 AND G70 CUTTING CYCLES


B


C


‘A’ IS THE P-BLOCK IN THE CYCLE


A


‘F’ IS THE Q-BLOCK IN THE CYCLE


Figure 28


Common toolpath for all parts in the family – used by G71 and G70 cutting cycles


Stan dard Program


Se lect one part of the se ries (PIN-001 shown) and make a stan dard pro gram for that part only,


ap ply ing the pre vi ous se lec tions This is a step that can be avoided with grow ing ex pe ri ence, but


go punching metal hydraulic press manufacturers ing through it pres ents cer tain co her ence to the de vel op ment Stan dard pro gram for PIN-001 is


listed with rel e vant com ments:


(PIN-001 STANDARD PROGRAM)


Standard program for PIN-001 only


(X0Z0 – CENTERLINE AND FRONT FINISHED FACE)


(BAR PROJECTION FROM CHUCK FACE = PART LG + 5 MM)


N1 G21 T0100


Metric units and Tool 1 – no wear offset


N2 G96 S100 M03


CSS at 100 m/min – CW spindle rota

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