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DXF files and CNC Machines1/30
I have a question about how CNC machines interpret DXF files.
I have been told by a local shop with a CNC machine that they could cut & drill parts for me if I could provide generate a DXF file in a CAD program. Each different cabinet box would need to have the hole patterns placed accurately on the drawing and somehow the CNC software interprets this and directs the machine to process.
That is a lot of CAD work.
As far as I can see the machine needs to know diameter and depth of each hole and the offset dimension from front and bottom of the part.
Could this be expressed in a CSV or Tab Deliminated format? Would not each hole have four values to represent diameter-X-Y-Z values. If you added to this the Width & Length dimensions of the part could CNC software do the necessary handshakes to make this happen without drawing each part individually?
usually there is a middle software. I use sheetcam. I name my layers in CAD what i want the cut to do , like .25 deep, recess.4, etc.
Now in sheet cam, i import a DXF, apply tooling, like saying use .25" bit to cut on the outside of the .25 layer, and use a .5" bit to cut .4" deep in 2 passes on the recess later. Once all this is done, i hit a button, and it uses a post processor to convert it to G-code my machine can understand. Each type of machine usually has its own slightly customized post processor file.
The shop you are dealing with will more than likely just import your DXF into their software, apply tooling, then generate code.
Unless its something special, they can probably tell what layers need to be outside cuts, or inside, and how deep.
Most drilling is done my points, so placing points where you want holes drilled should be fine
The machine probably reads G-code which is produced from either a dfx or dwg. by another software package, and yeah you need to draw it out in cad. not a lot of work I do it everyday.