Spindle orientation - angle movement

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cemoa9
Posts: 4
Joined: Mon Jun 01, 2020 11:01 am

Spindle orientation - angle movement

Post by cemoa9 » Mon Jun 01, 2020 11:37 am

Hello all,

II just finished retrofit of a Brother 321n with mach3 and a competitor card and am a bit disappointed by the motion planner of mach3.

It seems that Kmotion is much better there with the jerk control, and so I would like to use it for my next retrofit an old Fanuc Robodrill. But there the tool change is a bit tricky, here are the steps :

1) Z axis goes to home position
2) spindle orientates for tool loading / unloading
3) Z axis goes to maximum height and engages umbrella gear
4) spindle rotates a particular angle for each tool pocket, this rotates the umbrella to the desired position
5 ) Z axis goes down by some mm to disengage the umbrella gear
6) spindle orientates for tool loading / unloading
7) Z axis goes down to home position

Spindle would be Step / Dir controlled and the VFD would have a feedback card

Is it something Kflop / Kmotion can perform? I think yes, but I could not find a clear answer, especially on indexing the spindle then performing this accurate angular move.

Cordially

Cemoa9

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TomKerekes
Posts: 984
Joined: Mon Dec 04, 2017 1:49 am

Re: Spindle orientation - angle movement

Post by TomKerekes » Mon Jun 01, 2020 3:59 pm

Hi Cemoa9,

That should be possible assuming the Spindle can be controlled to move in the required manner.

You would need to write a C Program to perform the sequence you describe.
Regards,

Tom Kerekes
Dynomotion, Inc.

cemoa9
Posts: 4
Joined: Mon Jun 01, 2020 11:01 am

Re: Spindle orientation - angle movement

Post by cemoa9 » Tue Jun 02, 2020 6:42 am

Hello Tom,

Thank you for your reply, how would you do it?

Send step dir pulses through any output with setbit sleep resetbit sleep setbit... until Z signal is triggered through one input, then again with a specified amount of pulses until good position is achieved ?

Cordially

Francois

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TomKerekes
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Re: Spindle orientation - angle movement

Post by TomKerekes » Tue Jun 02, 2020 3:56 pm

Hi Francois,

KFLOP has 8 Step/Dir Generators so it would be simplest to use one. See here. You could then Home and Move the Spindle like any other axis. To use it as a Spindle you would Jog it at the desired speed. You might also read this.
Regards,

Tom Kerekes
Dynomotion, Inc.

cemoa9
Posts: 4
Joined: Mon Jun 01, 2020 11:01 am

Re: Spindle orientation - angle movement

Post by cemoa9 » Tue Jun 02, 2020 4:23 pm

Thank you very much Tom,

Btw, do you know that your name could mean "rounded shape" in Hungarian?

Cordially

Francois

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TomKerekes
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Re: Spindle orientation - angle movement

Post by TomKerekes » Tue Jun 02, 2020 4:51 pm

Hi Francois,
Btw, do you know that your name could mean "rounded shape" in Hungarian?
I thought it meant "maker of wheels". Very common name similar to "Smith" in the US.
Regards,

Tom Kerekes
Dynomotion, Inc.

cemoa9
Posts: 4
Joined: Mon Jun 01, 2020 11:01 am

Re: Spindle orientation - angle movement

Post by cemoa9 » Tue Jun 02, 2020 5:36 pm

Well now you say it, you are also right, it can also mean maker of wheels.

Anyway, thanks again for you explanations I will purchase the card soon.

Cordially

Francois

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