Pluto-P board + electronic gearing
23 Nov 2017 16:07 #102262
by viski
Pluto-P board + electronic gearing was created by viski
How to make hal configuration with pluto board to make an electronic ratio between two axes ?
Would it count 16 bit ( 65536 counts) encoder at 500 rpm speed ?
Would it count 16 bit ( 65536 counts) encoder at 500 rpm speed ?
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23 Nov 2017 17:27 #102264
by PCW
Replied by PCW on topic Pluto-P board + electronic gearing
This could be done in hal with the scale component but it may get tricky if
offset between the axis must be adjusted
This is all independent of what hardware you use, that is it can be done with any hardware interface including a
parallel port, A 16 bit encoder at 500 RPM is about a 550 KHz count rate, this is beyond what a parallel port can do but any hardware encoder (Mesa Pluto-P, Pico etc) should handle this
offset between the axis must be adjusted
This is all independent of what hardware you use, that is it can be done with any hardware interface including a
parallel port, A 16 bit encoder at 500 RPM is about a 550 KHz count rate, this is beyond what a parallel port can do but any hardware encoder (Mesa Pluto-P, Pico etc) should handle this
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25 Nov 2017 16:30 #102338
by viski
could you give me some information how to connect current parameters in hal with encoder ratio module.
default configuration is 2 axis (lathe ) + spindle closed loop .
Do i have to change to velocity measure because
encoder-ratio.N.error float out ->The error in the position of the slave (in revolutions)
Replied by viski on topic Pluto-P board + electronic gearing
could you give me some information how to connect current parameters in hal with encoder ratio module.
default configuration is 2 axis (lathe ) + spindle closed loop .
Do i have to change to velocity measure because
encoder-ratio.N.error float out ->The error in the position of the slave (in revolutions)
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26 Nov 2017 14:17 #102352
by PCW
Replied by PCW on topic Pluto-P board + electronic gearing
Can you explain what you are trying to do?
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26 Nov 2017 19:19 #102362
by viski
Replied by viski on topic Pluto-P board + electronic gearing
gear hobbing maschine
gear reduction is gear shaper tooth / work peace tooth number.
example :
gear shaper has got 71 teeth.
gear has got 19 teeth
speed reduction 71/19 = 3,7368421052631578947368421052632
mater encoder has 65536 cpr
slave encoder has 65536 cpr
master encoder 71 teeth
slave encoder 19 teeth
master encoder rotate from 80 - 500 rpm
slave encoder track master
if i have 150rpm than slave should rotate 3.73684210 times faster / slower
gear reduction is gear shaper tooth / work peace tooth number.
example :
gear shaper has got 71 teeth.
gear has got 19 teeth
speed reduction 71/19 = 3,7368421052631578947368421052632
mater encoder has 65536 cpr
slave encoder has 65536 cpr
master encoder 71 teeth
slave encoder 19 teeth
master encoder rotate from 80 - 500 rpm
slave encoder track master
if i have 150rpm than slave should rotate 3.73684210 times faster / slower
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26 Nov 2017 20:00 #102366
by andypugh
Replied by andypugh on topic Pluto-P board + electronic gearing
encoder-ratio is no help here.
Have a look at my sample gear-hobbing config:
wiki.linuxcnc.org/cgi-bin/wiki.pl?Hobbing
Have a look at my sample gear-hobbing config:
wiki.linuxcnc.org/cgi-bin/wiki.pl?Hobbing
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26 Nov 2017 20:01 #102367
by andypugh
Replied by andypugh on topic Pluto-P board + electronic gearing
If you are hobbing then the number of teeth on the hob really does not matter.
If you are gear-shaping then it will.
If you are gear-shaping then it will.
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11 Mar 2019 17:03 #128356
by viski
Replied by viski on topic Pluto-P board + electronic gearing
Did you tried makeing helical gears ?
How to implement this into emc ?
How to implement this into emc ?
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11 Mar 2019 19:10 #128373
by andypugh
Replied by andypugh on topic Pluto-P board + electronic gearing
I haven't tried making helical gears, but in theory:
You need to set the table angle to hob-angle +/- the helix angle.
You also need to add X-position * (some constant related to the angle and pitch PCD) to the gear blank angle.
In theory it is straightforward but I would need to draw pictures to work out the maths.
You need to set the table angle to hob-angle +/- the helix angle.
You also need to add X-position * (some constant related to the angle and pitch PCD) to the gear blank angle.
In theory it is straightforward but I would need to draw pictures to work out the maths.
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