Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.

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8 years 2 months ago #116159 by tecno
Replied by tecno on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.
OK not 30 but 21 if I am correct but still many setp's ;)

GearShift Hi
Gear A 1501 to 2500 rpm
Gear B 1251 to 1500 rpm

GearShift Lo
Gear A 751 to 1250
Gear B 451 to 750
Gear C 271 to 450
Gear D 161 to 270
Gear E 80 to 160

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8 years 2 months ago #116161 by andypugh
Replied by andypugh on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.
So C D and E can't be used with High / Low ?

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8 years 2 months ago #116162 by andypugh
Replied by andypugh on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.
You might want to let the gear ratios overlap. Maybe 1240 shouldn't require a switch from B High to A low.

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8 years 2 months ago #116164 by tecno
Replied by tecno on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.
With C D E in low gear only I get the whole range from 80 to 2500 with full torq.

But if there is no problems with overlapping so why not. The problem I see is how will LCNC determine what gears are most suitable? Max torq or less torq?

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8 years 2 months ago #116180 by pawel77
Replied by pawel77 on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.
hello tecno,

it looks like your gears are set up by electrical contacts. why you do not allow linuxcnc to take in charge of that through output pins and relays. you chose your spindle speed and LCNC decide which gear to activate.

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8 years 2 months ago #116182 by tecno
Replied by tecno on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.
Hello Pawel, the gearbox on my mill is totally manual. Only sensors on each gear setting connected to 7i76e inputs.

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8 years 2 months ago #116201 by tecno
Replied by tecno on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.
Is this the way for setp?

setp hm2_7i76e.0.7i76.0.0.input-14-max-speed 160
setp hm2_7i76e.0.7i76.0.0.input-14-min-speed 80
setp hm2_7i76e.0.7i76.0.0.input-14-ratio ??????

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8 years 2 months ago #116202 by Hakan
Replied by Hakan on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.
I'll have a go at it. If its wrong I'm sure it will be corrected by those that know.

The gear max min and ratio pins belong to the gearblocker component.
And then is the question on where the index for the gear will go. I think it is
zero-based, so gear one is index zero. So if my ramblings are correct it could be like
Code:
# First gear setp gearblocker.0.gear.0.min-speed 80 setp gearblocker.0.gear.0.max-speed 160 setp gearblocker.0.gear.0.ratio 0.1 # Second gear setp gearblocker.0.gear.1.min-speed 160 setp gearblocker.0.gear.1.max-speed 240 setp gearblocker.0.gear.1.ratio 0.4 # and so on for all the gears

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8 years 2 months ago #116203 by tecno
Replied by tecno on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.
Hmmm looking at .comp we have this

case 1: // Gear E
gear = (high_gear != 0) ? 5 : 10;
break;

Should it not be like this then? Hi gear is 5 and Lo gear is 10 right?

setp gearblocker.0.gear.10.min-speed 80

Sure somebody will correct us ;)

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8 years 2 months ago #116213 by tecno
Replied by tecno on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.
Is this correct?
Code:
#GearShift Lo # E gear setp gearblocker.0.gear-E.min-speed 80 setp gearblocker.0.gear-E.max-speed 160 setp gearblocker.0.gear-E.ratio 0.064 # D gear setp gearblocker.0.gear-D.min-speed 160 setp gearblocker.0.gear-D.max-speed 270 setp gearblocker.0.gear-D.ratio 0.108 # C gear setp gearblocker.0.gear-C.min-speed 270 setp gearblocker.0.gear-C.max-speed 450 setp gearblocker.0.gear-C.ratio 0.18 # B gear setp gearblocker.0.gear-B.min-speed 450 setp gearblocker.0.gear-B.max-speed 750 setp gearblocker.0.gear-B.ratio 0.3 # A gear setp gearblocker.0.gear-A.min-speed 750 setp gearblocker.0.gear-A.max-speed 1250 setp gearblocker.0.gear-A.ratio 0.5 #GearShift Hi #B gear setp gerablocker.0.high_gear.gear-B.min-speed 1250 setp gerablocker.0.high_gear.gear-B.max-speed 11500 setp gearblocker.0.high_gear.gear-B.ratio 0.6 #A gear setp gerablocker.0.high_gear.gear-A.min-speed 1250 setp gerablocker.0.high_gear.gear-A.max-speed 11500 setp gearblocker.0.high_gear.gear-A.ratio 1

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