Spindle Gear changing
- dctrytsman
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22 Apr 2025 07:49 #326874
by dctrytsman
Spindle Gear changing was created by dctrytsman
Can someone please explain how to set up gear changes. My lathe spindle motor is connected to a gearbox that has two gear ratios and the gears are changed by a pneumatic actuator. The gearbox is then connected to the spindle via belts. The spindle has a encoder connected to it via a 1:1 geared belt drive. The feedback part of the system works fine.
How can I connect this to HAL so that the machine automatically selects the correct gear based on the requested spindle speed. I think that the gear change should take place when the spindle speed is very low, but not standing still as the gears wont change smoothly.
How can I connect this to HAL so that the machine automatically selects the correct gear based on the requested spindle speed. I think that the gear change should take place when the spindle speed is very low, but not standing still as the gears wont change smoothly.
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- andypugh
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22 Apr 2025 14:09 #326890
by andypugh
Replied by andypugh on topic Spindle Gear changing
I have a similar (but different) system on my lathe. Mine has a 2-speed gearbox with magnetic clutches to change gear. (The differencce here is that mine _can_ change gear at zero speed)
I have a HAL component that controls this, and actually does rev-matching (ie, it will shift when the ratio of the shaft speeds matches the gear ratio)
Gearchoice.comp is here: github.com/andypugh/HalComps
I have a HAL component that controls this, and actually does rev-matching (ie, it will shift when the ratio of the shaft speeds matches the gear ratio)
Gearchoice.comp is here: github.com/andypugh/HalComps
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