It is determined that when machining the M22 × 2 internal thread on the connecting rod of the marine diesel engine made of 42CrMo4 steel, the bottom hole diameter of the workpiece should be ∅21.20 mm, the speed of the machine tool should be 40 RPM, and the lubricating medium should be PDMS polydimethylsiloxane coolant. For the purpose of reducing extrusion torque and temperature, the process parameters for internal thread forming are further optimized by orthogonal design. The effects of different processing parameters on the extrusion torque and temperature are obtained by numerical simulation, including the bottom hole diameter of the workpiece, the machine tool speed, and the lubrication medium. 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.In order to improve the forming quality of extruded thread, finite element analysis and experimental research are combined to reduce the two keys that affect thread quality in the machining process-extrusion torque and extrusion temperature. 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 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
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