Messages

191

Mach4 General Discussion / c axiss move while z axiss comand

« on: October 03, 2021, 02:29:59 PM »

pleaase if some ne matt such streng proble
i have machine with 6 axiss( not sioltanic)
but with c and z there very strenge beheviour
if i move by jog all ok
but if i move by comand the z axiss
c also move and even give me alarm over soft max
what can be?
this 2 axiss are not master slave not any conection

192

Mach4 General Discussion / Re: Jerk ,S curve

« on: September 26, 2021, 06:03:11 AM »

Thanks
As i told on first post ,i found way to solve ,im not sure its will handle all working typs ,but for now up to 3 axiss simoltan its look ok
I use the s curve option in the servo drive

193

Mach4 General Discussion / Re: Jerk ,S curve

« on: September 25, 2021, 09:24:09 PM »

Syntec,Tpa,Weihong.... and much more that i not remember names now ,cost about 1000-2000$ and all of them have jerk
I normally solve many thing by myself ,like modbus... interface...2 machine's parallel... all I solve with c# but this jerk i can't find any way to solve without mach help

194

Mach4 General Discussion / Re: Jerk ,S curve

« on: September 25, 2021, 04:19:30 PM »

Ill give you some numbers
When i use without s curve i can max use accl in mach 500, while max speed 70 m/min
When i use s curve i csn use 2500
Total in time ehrn i cut parts size about 500"400 mm different in time its more then double
This without notice about pocket ( we use alot "pocket in woodworking" then time difference much much higher
And i not take also the following errors in cv that we have because poor acceleration
So again ,im not sure how many users are woodworking cnc or sigh ,but i guess not few,and for us its not only important its critical

195

Mach4 General Discussion / Re: Jerk ,S curve

« on: September 25, 2021, 12:49:08 PM »

Craig
As i remember you use the cnc for electric cards ,so its probably small table with screw lead system ,in that case s curve real not critical,my field its woodworking ,rack and pinion system with big table ,s curve its very very and one more very important
So only question i can't answer its if more user use as me ( wood or sighn engraving) or like you ,but if there many user like me its critical 100 %

196

Mach4 General Discussion / Re: Jerk ,S curve

« on: September 23, 2021, 01:38:40 AM »

I understand ,but until yesterday i didn't understand how important is this s curve ,its critical ...i give you sample ,we had many times that CV wizard got "crazy" and was far from original tool path,when i sent it to mach to cheack always conclusion from there side was that my acceleration /deccelration so poor that CV can't calculate well
But now i understand why it was do poor ,it was so poor because mach system not support s curve and without s curve you got very big vibration on other axis while you accelerated

197

Mach4 General Discussion / Jerk ,S curve

« on: September 22, 2021, 06:34:54 PM »

hello every one
i use mach 4 for about 3 years more then 20 cnc
i always had acceleration problems ,but i always blame the chines structure
until we open our work shop and start produce our cnc ,but ...same problem cant get normal value for the acceleration without having vibration
 today we found the at least the reason
mach don't support S curve
i know this the reason because when we use the driver filter(its act similar as S curve)this vibration go even with high level of acceleration
after this long story i ask mach engineer ,please try put attention for this
its very very important(solve it by the driver its not correct way)please try solve this point
thanks
yaakov

198

Mach4 General Discussion / Re: MACH4 G31 MOTION WILL NOT STOP ON PROBE CONTACT

« on: August 31, 2021, 11:00:07 PM »

more then 10 machines ,all pokeys,all have probe ,never had problems,folow pokeys instruction

199

Mach4 General Discussion / shut down output while close mach PMC

« on: August 29, 2021, 08:35:02 PM »

i have several output i control them by PMC(its mean i force directly not need by define as Mach output,i use pokeys)
now when i shut down mach i want this output will turn off
how can i do that?
is there option by PMC
or only with "screen unload" script?

200

Mach4 General Discussion / Re: Start Cycle with a Push Button in Mach4

« on: August 26, 2021, 03:44:24 PM »

PMC only ,after some years with mach not few machines ,believe me PMC its only option for external button