Try to find documentation for the controller. This will let you know which one your control disagrees with.ģ. For example, edit the header block to eliminate one of the "G20 G90 G64 G40" at a time. Always save a copy of the existing/ best working one! It's really easy to break a post processor due to some kind of syntax error, or other hard to find mistake. If you haven't found this already:ĬamBam 0.9.8 documentation - Post Processorġ. Cambam was my gateway drug to cnc and is an excellent program for what it is. Modifying a post is a tedious, but satisfying project. Z axis outputs in wrong direction (machine reads tool advance towards table as negative, CamBam outputs it as positive.Īny insight on this issue/issues is much appreciated. Program ends with M30 causing the machine to go into a loop instead of ending the program
Cambam thread milling code#
The code for arcs (G02/G03) does not format correctly, using i and j codes instead of r/radius value. Control does not recognize something in the line “G20 G90 G64 G40“ G 92 offset still not set up(cannot use G54) So far these are the errors with our post processor: I have been drawing some simple shapes and checking the output g-code to examine any errors. I would like to start with making simple 2D tool paths on the XY-plane and move on from there.
Cambam thread milling software#
I have been experimenting with CAMBAM as the software is much easier for me to wrap my head around than F360, and it's more intuitive when it comes to making the post processor. Being that this control is this vintage, there are several modern g-code standards that the control does not recognize (G54, notes, etc.) I have successfully programmed this machine manually but we want to use CAD/CAM with it. An endmill holder may be used with caution, but might require modifications to speed and feed recommendations, to avoid chatter and excessive tool deflection.We have a 1982 Yuasa Accumill equipped with a Fanuc 3M control. We recommend using a hydraulic chuck, milling chuck, or shrink-fit toolholder. Typically, a collet chuck does not provide the necessary rigidity to cut high-quality threads. Thread mills cut with the side of the tool, so it is very important to use the most rigid toolholders. For external left-hand threads, program the helical interpolation direction with clockwise arcs (G02), with the Z-axis starting at the deepest point, and feeding up (Z positive) by the amount of the pitch of the thread. For internal left-hand threads, program the helical interpolation direction with counterclockwise arcs (G03), with the Z-axis starting above the deepest point, and feeding down (Z negative) by the amount of the pitch of the thread.įor external right-hand threads, program the helical interpolation direction with clockwise arcs (G02), with the Z-axis starting above the deepest point, and feeding down (Z negative) by the amount of the pitch of the thread. For internal right-hand threads, program the helical interpolation direction with counterclockwise arcs (G03), with the Z-axis starting at the deepest point, and feeding up (Z positive) by the amount of the pitch of the thread. Climb milling generates less heat and less tool deflection, which leads to vibration.Īlways program the spindle in the forward direction (M03). Always program climb milling for better surface finish and improved tool life.
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