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Boxford 125 lathe Tool Changer Comp FERROR (SOLVED)

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6 years 1 week ago #187122 by PCW
Replied by PCW on topic Boxford 125 lathe Tool Changer Comp FERROR
its in the ini file

Can you plot the tool changer position command?
Does it really have a 1000 degree step?
The following user(s) said Thank You: Clive S

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6 years 1 week ago - 6 years 1 week ago #187123 by Clive S
Replied by Clive S on topic Boxford 125 lathe Tool Changer Comp FERROR

PCW wrote: its in the ini file

Can you plot the tool changer position command?
Does it really have a 1000 degree step?


I have done an edit in the previous post.

I will try and do a plot in the morning . What do I plot the tool changer command against for the trigger

I have to stop now have been called for dinner. thanks again
Last edit: 6 years 1 week ago by Clive S.

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6 years 1 week ago #187183 by Clive S
Replied by Clive S on topic Boxford 125 lathe Tool Changer Comp FERROR

Clive S wrote:

PCW wrote: its in the ini file

Can you plot the tool changer position command?
Does it really have a 1000 degree step?


I have done an edit in the previous post.

I will try and do a plot in the morning . What do I plot the tool changer command against for the trigger

I have to stop now have been called for dinner. thanks again


Re: Does it really have a 1000 degree step? not sure what you mean by this.

This is the first plot with the ferror at 1000 and min_ferror at 1000

.
then the second ferror at 1000 and min_ferror at 1000

.
The next 3 are with ferror at 1 and min_ferror at 0.5

.
The they are like this until the DRO gets up to 21.7 I am pressing F2 to run between the errors

.
Now it is 21.7 on the DRO I think this is the final position where the turret should be. (I am doing this on the bench ie no physical machine).
.

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6 years 5 days ago - 6 years 5 days ago #187413 by Clive S
Replied by Clive S on topic Boxford 125 lathe Tool Changer Comp FERROR
I can't seem to get further on this The A axis will not move further that 1 unit then it will ferror

Code:
[AXIS_A] TYPE = ANGULAR HOME = 0.0 MAX_VELOCITY = 1 MAX_ACCELERATION = 5 STEPGEN_MAXACCEL = 5 SCALE = 80 FERROR = 1 MIN_FERROR = 0.5 MIN_LIMIT = -99999 MAX_LIMIT = 99999 HOME_OFFSET = 0.0 setp stepgen.3.position-scale [AXIS_A]SCALE setp stepgen.3.steplen 1 setp stepgen.3.stepspace 0 setp stepgen.3.dirhold 35000 setp stepgen.3.dirsetup 35000 setp stepgen.3.maxaccel [AXIS_A]STEPGEN_MAXACCEL #net apos-cmd axis.3.motor-pos-cmd => stepgen.3.position-cmd #net apos-fb stepgen.3.position-fb => axis.3.motor-pos-fb net astep <= stepgen.3.step net adir <= stepgen.3.dir net aenable axis.3.amp-enable-out => stepgen.3.enable ########################################################### # loading the toolchange component in .hal file ########################################################### loadrt toolchanger addf toolchanger servo-thread net tool-change iocontrol.0.tool-change => toolchanger.toolchange net tool-changed iocontrol.0.tool-changed <= toolchanger.toolchanged net tool-number iocontrol.0.tool-prep-number => toolchanger.toolnumber net tool-oldnumber iocontrol.0.tool-number => toolchanger.currenttoolnumber net apos-cmd toolchanger.position-cmd => stepgen.3.position-cmd net ahomed axis.3.homed => toolchanger.ishomed net tool-prepare-loopback iocontrol.0.tool-prepare => iocontrol.0.tool-prepared

Has anybody got a working config for an angular A axis

Am I using the wrong axis letter for the turret?

File Attachment:

File Name: boxford.tar
File Size:40 KB
Last edit: 6 years 5 days ago by Clive S.

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6 years 5 days ago #187462 by Mike_Eitel
Replied by Mike_Eitel on topic Boxford 125 lathe Tool Changer Comp FERROR
I dont see that you have somewhere backlash compensation BUT I see the same 5
MAX_ACCELERATION = 5 and STEPGEN_MAXACCEL = 5
Maybe a bit higher value (6) for stepgen does the job?
Mike

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6 years 5 days ago #187470 by Clive S
Replied by Clive S on topic Boxford 125 lathe Tool Changer Comp FERROR

Mike_Eitel wrote: I dont see that you have somewhere backlash compensation BUT I see the same 5
MAX_ACCELERATION = 5 and STEPGEN_MAXACCEL = 5
Maybe a bit higher value (6) for stepgen does the job?
Mike


Mike thanks for helping.
If you have the time could you look over the post from the beginning. I have done some Halscope plots

I have tried all sorts of values this is the previous one forum.linuxcnc.org/38-general-linuxcnc-q...error?start=0#187119

I am trying to set up a toolchanger on a small Boxford.
The following error happens after the A axis moves 1 unit ie. G1 A1 F2 is ok but A1.1 will error

I am not sure if I am using the correct comp or even using the turret as an A axis. I have tried it with changing the TYPE = ANGULAR to LINEAR. if I remember before I found the comp I could jog it around using a Y axis.

In the ini file I am using X,Z,A with 3 stepgens I am using stepgens 0,2,3 . I have 4 loaded in the hal file

Will missing one out create a problem?

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