- Joined Oct 29, 2009
Why would the infeed depth be negative by default then?Those are basically terms that are specific to dxf2gcode..
I'd assume that
workpiece top = The Z 0 point.. or the upper most face of your material.
infeed depth = is the feed/clearance height which is the distance your tool will go to for non-cutting moves to ensure its got enough clearance to avoid dragging the tool over the surface of the material in non-cutting moves. Also known as clearance height or feed height (or even retract height).. Those can be the same or could be different depending on the programming tool you use. Seems its just 1 option for dxf2gcode
final mill depth = how deep your shape should be cut at or the z depth of the lower face of your cut.. or how deep from the tip you want your tool to be into the part during cutting..
Here is an example of what my cam tool has for heights (this is for a drilling operation).. Program is HSM express
View attachment 98974
Although if the work piece top is set at 0 then an infeed of -.0591 will result in a machining operation?
2 passes of an infeed of -.0591 results in a final depth of -.1181 .
No I took it to be the total machining took two passes, IOW .1181 in two passes/depths.Ah it did do two passes and I was wondering why. So the first pass is sort of like a pilot hole? And the second pass is the actual cut?
yes absolutely.. Knowing it is good.. but it is a simple structure... just look at a few known programs and you know all you need..For myself, learning to write G code is very useful even if you use a CAM program, there always comes the point when you want to either trouble shoot or tweek a program, to ignore it completely will be frustrating IMO.
oh and now that I think about it Autodesk has fusion 360 which has HSM built into it also and is available for hobbyists (free for 1 year and may be continued)..
That gets you FREE 3D CAD + HSM Express for the CAM portion.. (assuming you don't mind a cloud based application.. internet required..)
Its "fairly" similar to Inventor.. (made easier for the DIY crowd)
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by Jake Hertz