Automaticaly 4 speed gearbox
01 Jul 2022 00:14 #246330
by dragon44
Automaticaly 4 speed gearbox was created by dragon44
Hello 
First thing on the start - sorry for my English.
Second thing - again i try do something above my linuxcnc level.
I change system of control in lathe, which use 4 speed gearbox. Gearbox is controlled by two hydraulic actuator (first actuator - two gear, second - next two gear to choice). On the shafts are two induction sensors, to confirmation shafts position - correct change gear. What I want to do (or what I think, that i need do):
1. I need four signal for four speed.
2. Gear must be change on the spindle turn off.
3. I want choice a gear from S parameter from Gcode .
S parameter: Spindle override: 50-120%
1. gear - 50 - 100 rpm (25-120)
2. gear 100,001 - 250 rpm (50-300)
3. gear 250,001 - 500 rpm (125-600)
4. gear 500,001 - 1000 rpm. (250-1200)
For example:
S240 - second gear - logic of outputs: 01; logic of inputs: 01.
S666 - fourth gear - logic of outputs: 11; logic of inputs: 11.
4. Linuxcnc must automatically check choice a spindle speed (S parameter) and sets 2 outputs, and wait for correct signal from inputs sensors.
What i know (rather, about what i havent idea):
Is gearchange function, but probably I cant use 4 speed. (?)
Probably I must use PLC module, but how add S-parameter. I never use in linuxcnc PLC, but I something know about Classic Leader and I should to handle with logic. Dependly to value S-parameter - comparly with gear range - PLC must set two outputs. Next must be check inputs signals from sensors and set enable ready signal to work.
So... where is mistake in my logic?
Maybe easier will be written in hal, than build PLC logic?
Where is beginning my travel with gearbox??
and I use 7i76E
Bartek
First thing on the start - sorry for my English.
Second thing - again i try do something above my linuxcnc level.
I change system of control in lathe, which use 4 speed gearbox. Gearbox is controlled by two hydraulic actuator (first actuator - two gear, second - next two gear to choice). On the shafts are two induction sensors, to confirmation shafts position - correct change gear. What I want to do (or what I think, that i need do):
1. I need four signal for four speed.
2. Gear must be change on the spindle turn off.
3. I want choice a gear from S parameter from Gcode .
S parameter: Spindle override: 50-120%
1. gear - 50 - 100 rpm (25-120)
2. gear 100,001 - 250 rpm (50-300)
3. gear 250,001 - 500 rpm (125-600)
4. gear 500,001 - 1000 rpm. (250-1200)
For example:
S240 - second gear - logic of outputs: 01; logic of inputs: 01.
S666 - fourth gear - logic of outputs: 11; logic of inputs: 11.
4. Linuxcnc must automatically check choice a spindle speed (S parameter) and sets 2 outputs, and wait for correct signal from inputs sensors.
What i know (rather, about what i havent idea):
Is gearchange function, but probably I cant use 4 speed. (?)
Probably I must use PLC module, but how add S-parameter. I never use in linuxcnc PLC, but I something know about Classic Leader and I should to handle with logic. Dependly to value S-parameter - comparly with gear range - PLC must set two outputs. Next must be check inputs signals from sensors and set enable ready signal to work.
So... where is mistake in my logic?
Maybe easier will be written in hal, than build PLC logic?
Where is beginning my travel with gearbox??
and I use 7i76E
Bartek
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