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1

G-Code, CAD, and CAM discussions / 4 axis inventor hsm post

« on: November 12, 2016, 07:29:30 PM »

hello

my mach3 post is working perfectly f or 3 axis... i recently added a fourth axis on the table rotating around the x axis... i was able to grt the a axis working by changing the post from false to true to get the axis ouput worjking..

the a axis indexes properly .... the first cut at 0 deg goes good but when the A axis indexes to the 120 deg position... x y and z move in a triangular pattern... not right...

is there anyone using inventor hsm pro and mach3 with 4th axis...who might share the post processor or put me in touch with someone who can help me.. i have posted on the autodesk forum as well...

heres two vids showing the simulation in inventor and the post toolpath..

hers the part and simulation .. i think i did it right and its working right
https://www.youtube.com/watch?v=Bcuizz6cH-w


and heres the wonky post toolpath
https://www.youtube.com/watch?v=UTHKzvj-7vo

2

General Mach Discussion / motors juttering or losing steps when using feed override

« on: February 02, 2016, 08:08:05 PM »

hello all,

thanks for having me, im fairly new here...im a 100 dis vet.... i have use of only one arm, so please excuse my typos, i go fast and miss letters ... ive been workin m y 0704 for about a year, ive finally gotten to the point thats it time to start ruining bits and endmills LOL...

so im tryinhg to make a spanner wrench till i get the power drawbar done... ive got the cam mostly figured out and found feeds and speeds that agree with thestock motor..

sooooo...im dry cutting the spanner program.......it runs great, i chased the emi issue for a while and finally fixed that problem by rearranging wires and using emi magnets on all of the lines...
gibs adjusted to .001 lash in booth directions, not overly tight....it refs all home nice and smooth with no problems.
 20IPM feedrate...
.040 stepover
motors are 560oz n23's
tuned to 100ipm at 15 acceleration
6061 aluminum
1/2 inch endmill 3 flute
ive added 1 shot oilng to all the ways and dovetails, so its well oiled.
running mist coolant
now if i let it run at 20ipm it has no problem, i was playing with the overrride white it was dry cutting air..i turned it up to max which is i think 260% and at the very limits of the x+and y+ it jitters like its losing steps...as i turn the override back down, the closer i get to the original 100% the jitter/vibration gets less, when it hit about 130 its gone...
i did notice that if i turn the acceleration up on the x and y motors the jitter becomes worse even below the 100% override setting

is it justa matter of im turning it up too much or is it because the gibs are too tight at the extremes of the x and y axis..i was guessing its not a too tight ituation because it doesnt do the jitter/vibration in any other situation..like ref all home
i did a search, naybe im not keying in the right words , if its been covered i would surely appreciate being pointed in that direction..

rick

3

One on one phone support. / ports and pins ....outputs .. random numbers filled in automatically

« on: May 19, 2015, 03:06:19 PM »

the charge pump will not take any pin other than 17 and output 1 will not take any pin other than 17.. so if i want to use the relay on the c41 board, i cannot use the charge pump which is unsafe...

when im tryinhg to put a number in one of the output boxes, any box...it bounces from that box to a random box and fill in a random pin number on its own...

it also locks out the slider to right and i cannot move it..i have to close out ports and pins then restart it.. if i double click in random boxes again it jumps again to anotrher box and fill in a random number and locks out the slider...please let me know if i can talk to someone or where to post this. i downloaded a trial version on my laptop and its doing the same as my mill comp both on windows 7 32 bit.