Biesse Rover 336 retrofit 5i23-7i44-7i66 and 7i33TA

More
13 Jan 2019 14:54 #124092 by Naas
Finally i have all the wiring done on this machine.
All I/O is connected, all CNI modules removed.

Computer with MESA 5i23
MESA 7i44 handling serial communications
MESA 7i33TA handling motion control


MESA 7i70 and 7i66 in the cabinet, mostly handling motor management.


MESA 7i70 and 7i66 in the head of the machine, handling all drill, spindle and flap pneumatics:


MESA 7i70 and 7i66 at the bottom of the machine, handling vacuumcups, machinestops and toolchangers.


I have also added a contactor on the power mains for more convenience.


I have also added valves on the pneumatic control cirquits of the flaps, so i can have the flaps work fully independent of the spindles.

Please Log in or Create an account to join the conversation.

More
06 May 2019 09:47 #132943 by bevins
Is it moving and did you get toolchanger working?

Please Log in or Create an account to join the conversation.

More
15 Sep 2020 06:20 #182186 by Jonasza
Hello
maybe, who retrofit Biesse Rover 336, can help? What is the PPR of encoder for Rover 336? Since I find in the documentation what the pitch of each axis is, but I don't know the encoders PPR. So I can't calculate the ENCODER_SCALE used in the .ini file.

Please Log in or Create an account to join the conversation.

More
15 Sep 2020 12:00 #182216 by andypugh
You can measure the PPR if you can rotate the motor by hand.
Make several full rotations while looking at the counts change with Halmeter.
It will be a round number either in decimal or binary (so you only need to be accurate enough to tell the difference between 1000 and 1024, for example.)
Making several turns and dividing helps with accuracy as the start / finish alignment is fractionally less critical.

Please Log in or Create an account to join the conversation.

More
16 Sep 2020 04:28 #182343 by Jonasza
Hello,
thank you. But I need an exact value. I tried different ENCODER_SCALE values experimentally, but I get 1-2 mm error at 100mm feed. No matter how many values I try, even float values, I still get pretty big errors.

Please Log in or Create an account to join the conversation.

More
16 Sep 2020 15:53 #182447 by andypugh
You would expect 2.4 mm error in 100mm if you had 1000 instead of 1024 (or vice-versa)

If _no_ number gives the right positions then there is something else wrong.
Slipping coupler?

Please Log in or Create an account to join the conversation.

Time to create page: 0.121 seconds
Powered by Kunena Forum