![]() ![]() I don't know why your machine stalled though and without some sort of file to see it's going to be hard to narrow it down any further. The post looks fine, and I posted a 1/2-13 drilling operation that came out as expected: The latest updated version on the tomach website ( i couldnt post m29 code to path pilot) so i used the latest post processor they supply on their site and now this is code is readable by pathpilot/tormach mill but still cant achieve tapping a full depth without binding up the tap which is leading me to beleave its the feed rate but you think otherwise? How is it calculating the feedrate of the tap when it posts or how does it calculate the surface wrote: I'm not completely sure what you're asking. How do it find out what the rate thats being generated is (regardless of which tap, im wondering where to locate this info each time i generate a tap operation) Ok so this has nothing to do with the plunging rate of z during tapping. Fusion generated 400RPM with 26.1799Ft/Min.Īm i making some mistake or is the softwear generating this wrote: His examples were 1/4 -20 tap meaning pitch was 0.05 because 1/20 = 0.05 pitch and tap was 0.2500 diameter. So i then input his explanation examples hoping I was making some kinda mistake setting up in metric but again found my feeds and speeds to be incorrect, They did not match what Jon Saunder's examples in the video showed. Secondly, I saw a video of NYC CNC explaning how to tap using compression head on a tormach using fusion360. When i input this info into cam drilling fusion360 gives me defaults/locked togethor (if I change the rpm it gives me a figure for IPM or mm/min which i cannot override) Yes I could edit the code generated but this seems counter productive to me and I think it best to get to the bottom of the issue so i can use the tapping functionality of fusion360 cam.įusion cam generated 400 RPM to be 7.97965ft/min -> is this correct, Am i making some error? I used the drilling operation in Fusion cam, my perameters were 400 RPM as my spindle speed and I calculate the feed to be 500mm/min Whatever it comes out to will be the best your mill can do.I set up to tap a m8x1.25 - I tap drilled the hole using 17/64 drill bit, then when i went to tap the feed/speed in Z was incorrect which ofcourse bound my tap But expect something closer to 2 seconds per hole. If it's a new, tight machine, I say program it to the numbers Nachi gave you. ![]() That said, the acceleration curves on the spindle and Z motors shouldn't let you go any faster than they can handle. I get the feeling most people program them faster, but I've never noticed their machines actually running any faster. I program pretty much every tap (within reason) at 30 inches per minute, and match the RPM to that. Even then, you end up with an average speed well below 1,000 RPM. I think you'd be doing incredible if you topped out at half that RPM. 100 higher than the suggested speeds for cutting. I can't imagine any normal mill spinning up that fast. THREAD FORMING TAPS generally form threads more efficiently at higher speeds. That leaves less than an eighth of a second to reach top speed. ![]() And then it has to come to a full stop before the bottom. 05" return height, that would ideally come to just under a quarter of a second to get to the bottom of the hole. 3570 RPM gives you 89.25 inches per minute. ![]()
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