Messages

101

General Mach Discussion / Re: Inconsistant ATC Positioning

« on: March 09, 2017, 07:10:36 PM »

Aha, that one 

102

General Mach Discussion / Re: Inconsistant ATC Positioning

« on: March 09, 2017, 08:58:01 AM »

Hi RT,
The screen set was designed by another user, it may have been Hood but I'm not sure. So I don't know if the homing of the A axis was included.

I cant find in ports and pins where to select the homing option

My macro should only be testing for 8 tools ?? Did I post the wrong one ?

George

103

General Mach Discussion / Re: Inconsistant ATC Positioning

« on: March 08, 2017, 12:08:24 PM »

OK RT here's what I did,
Here's what I did.

I set distance mode to ABS
I checked the Rot 360 rollover box
I set A axis to angular
I placed a G90 directly after Get Selected tool =1

I homed the Z axis this was fine.
I don't have a 'Home' button for the A axis However I can home the axis by pressing the 'ref turret' button. The axis does ref to the sensor but very slowly Once it hits the sensor then it backs of 1 degree.
If I move the turret and the Z axis away from the home position and then do a 'Home all' the Z axis returns to the home position set but the A axis does not move at all

Ok from the turret at home I then input via MDI
G0 A45 Turret moves 45 Deg
Input G0 A45 again, turret does not move
Input G0 A90 , turret moves to an additional 45 Deg
Input G0 A135, turret moves to an additional 45 Deg
And so on through to 360 Deg.

That seemed to work fine but heres the odd bit.

From the A axis home position,
Input T201 turret moves 45 Deg this seems ok
Input T301 turret moves an additional 90 Degrees, in other words it skips a tool.
Input T401 turret moves an additional 135 Degrees, now it skip 2 tools
Input T501 turret moves an additional 180 Degrees, now it skips 3 tools.

And so on....

I now set distance mode to Incremental and with each entry of G0 A45 the turret moves 45 Degrees each time, this seems correct.
I ref the turret again, now sitting at tool No1
T101 , no move
T201 moves past tool No2 then backs against it's stop, this seems good
T301 move 90 skipping a tool
T401 moves 135 skipping 2 tools
T501 moves 180 skipping 3 tools.
Clearly some wrong with my M6 macro or my setup,

I'm frazzled so I need some help.

Regards

George

104

General Mach Discussion / Re: Inconsistant ATC Positioning

« on: March 07, 2017, 06:36:57 PM »

Thanks RT,

Is that a G90 to be included for each of the 8 tools in the macro ??

105

General Mach Discussion / Re: Inconsistant ATC Positioning

« on: March 07, 2017, 06:14:41 PM »

Thanks RT, I'll set distance mode to Abs and insert G90 to the Macro as advised and give that a go.
Without the G90 I was getting random movement on the turret, lets see how this goes tomorrow.

I have attached my Macro, lets see where I add the G90

I will fit a home sensor on the turret,
Should I set the home position with tool no1 in position ??
There re two other options, 'Auto limit overrides' and 'Override Limits', which of these should be 'Checked' ?//

George

106

General Mach Discussion / Re: Inconsistant ATC Positioning

« on: March 07, 2017, 01:22:10 PM »

I don't have a turret to check out the movement (where's Hood when you need him ) so I can't test it for you but some things to try

put a code "G90" at the beginning of the macro and see if you get the same behavior.  Eliminates some other code changing it to G91 mode.

If the error is repeatable then perhaps your steps per rev are messed up, unlikely.

If the movement is truly random then it is either mechanical, loosing steps from too great speed/acceleration or loose coupling, or electrical noise on the line.

My two cents.

HTH

RT

Thanks RT

I finally got it to rotate through 360 degrees by changing the 'Steps per' in motor tuning set to 167. This seems to be a very odd number for the steps per but it seems to work for my turret.
A Axis is set to Angular
ROT 360 rollover is checked
Distance mode is set to Inc checked

Turret moves 360 degrees each time with command G0 A360 repeatable
Also moves 45 degrees with G0 A45  repeatable

I don't have the option on my screen to 'ref all' but I do have a homing button for my A axis
I loaded a new screen to give the added dro for the turret but I'm not sure if it is working correctly.

I'm pretty sure that there is something amiss with the homing of the tool turret, I will try and fit a new homing sensor tomorrow.

George

107

General Mach Discussion / M6start macro check please

« on: March 07, 2017, 04:01:06 AM »

I'd be grateful if someone could check the attached Macro for errors.

I'm getting inconsistent travel on my Boxford TCL160 8 position rotary tool turret.

Many thanks

George

108

General Mach Discussion / Re: Inconsistant ATC Positioning

« on: March 06, 2017, 05:32:04 PM »

Has anyone looked at my MSstart Macro or my MAch3XML file to see if I have any errors ??

George

109

General Mach Discussion / Re: Inconsistant ATC Positioning

« on: March 06, 2017, 05:30:31 PM »

Turrets have rotational inertia. You could be loosing steps because your acceleration setting is too high. Try a low setting and see if the moves become consistent.

I'll give that a try,
Many thanks
George.

How do I check the Mode Gary, ??

110

General Mach Discussion / Re: Inconsistant ATC Positioning

« on: March 06, 2017, 05:29:26 PM »

Turrets have rotational inertia. You could be loosing steps because your acceleration setting is too high. Try a low setting and see if the moves become consistent.

I'll give that a try,
Many thanks
George.