I'll also be looking into the resources suggested (Smid, and CNC cookbook).You have a simple goal, to take a CAD file and get your mill to cut it. I'll be doing that next time round as I've ruined a few pieces of aluminum already. Great idea about sending a G0 command to the center of the part to see if it's really showing up at center BEFORE starting the operation. I didn't even know what these meant so I'm googling those right now, but if anyone has an explanation or link to a resource, I'm happy to have that too! This is going to sound stupid.but where am I supposed to be accounting for that? Is that in Mach 3?įinally, I saw replies about Absolute vs Polar coordinates, and also Incremental vs Absolute. Second question - Another couple replies involved accounting for the cutter diameter. 100" IN towards the center of the stock, or is the offset OUT away from the center of the stock? I will try reversing the way I had done it, but generally speaking, do I want my offset to be. 100" offset for the edge finder could have been offset in the wrong direction. Thanks for the replies everyone! A lot of interesting ideas!įirst question - Two of the replies suggested that my. It's doing exactly what you told it to do, in it's native language. your CNC mill is not cutting the part off center. Step 1 regardless of where you get some help from, is to understand. I'm willing to help by fone on the weekends. Typing is a challenge for me, but if you don't find answers in your thread. If you can't even be sure about what the blocks of G-code are doing, Just as the posts allready offered do, and I'm not up to quarreling with my new~found friends here just now, I can't see any point in posting my own methods, as they will each need to be explained Look up the great books by Peter Smid on CNC if you don't have any~one to walk you thru it. There are several things you mentioned, that indicate you are about at the same pointĪs one who buys a sail-boat, but only knows that you can 'Go' without a motor. Unfortunatly you are try~ing to jump all the way surgery, and you missed the bed-side mannor lessons. The specifics of the error can tell you alot about whats happening. Measure exactly how far off the bosses are from what you expect.
#Where to buy cutviewer mill download#
I would download cutviewer at and start running your Gcode through that and see what it shows. Lucky for you, I've narrowed it down to two possibilities, which are the most common in machining:ġ) its one or more of the possibilities you listed aboveĢ) its something else you havent thought of I guess what I'm trying to figure out is where you would look first? Something in my CAD design? (I measured the part digitally and it shows up correctly with equal lengths to each side)Ĭould it be something set wrong within Mach 3? (I haven't dug in to the settings too deeply) Is it something mechanical with the mill? (Again, recently trammed, dial indicated the vise) Is there something wrong with my origin technique? (See above on how I've been setting it.) This makes me think maybe it's something in the GCode in regards to stock size? Still would be odd because I checked that. One extra clue is that when the program is running the tooling path/milling operation seem to be THINKING that there is a little extra to mill (judging by the way it moves farther over than it probably should). Vise has been adjusted with a dial indicator, again to roughly within 1/1000". My mill is trammed to within approx 1/1000". 100" to compensate for diameter of the edgefinder and zero that out. As soon as the edgefinder centers, and then pops out of alignment again, I add. I have been using it by causing it to wobble, and then bringing the edgefinder in contact with the piece's edge. I've set my X,Y origins to the back left corner of the piece using an edgefinder. I've squared the piece to within a few thousandths of inch (within my acceptable tolerance range) ie. The two raised features are in line with each other, but they should have been centered evenly relative to the flat surface. I'm using a TAIG CNC Mill, and I'm having trouble figuring out what would cause a part to be off center. I'm a hobbyist trying to learn milling basics.
0 kommentar(er)
