Speedio is too damn fast, how do I slow down spindle acc/dec

[BROTHERFRANK]

I would experiment to find the rpm where the blades open fully. Then when starting the fan I would start the spindle to that rpm, dwell for .5 second and then go up to the speed I want to run the fan at. I think once the blades are open the accel will be fine. Maybe need to do something like that on the way down too for the fan to live longer.

 

[wheelieking71]

Here is the skinny on the smallest LANG fan in the Brother spindle:
I have one in my 650 that has been there since day one. I run it at 11,000rippems. I turn the spindle on straight to 11k.
This fan ran all-out 1.5 shift production for about 4 years. Approx 25~30 cycles/day. 5/6 days week. 52 weeks/year.
Andy (2outof3) is familiar with the job, seen it run, and can back up the story, LOL
In that time, I have had one spring fail. And, it stretched. It did not break.
This made the fan sound funny on decel. I am assuming because the loose blade was mingling with its neighbors. It still sounded normal on accel.
I also have one in each of my haas mills. Even longer than the Brother. Also run @ 11k.
Only issue I have ever had was when one got tossed because of an out of kilter TC arm. It broke one blade.
The body was fine. Installed new blades/springs, and it is still going strong.
These fans are surprisingly resilient and tough. I cant recommend them enough!

 

[sinha]

If the Brother control has macro capability, a little M code macro using a While/Do loop to control the spindle ramp would be handiest.

I think this is the best solution. There is no parameter to control acceleration/deceleration of the spindle.
Likewise, M05 also may need to be modified.

 

[LOTT]

I 3D printed a solid fan on a whim, saw some being sold online and wanted to try it out. It's been working for years, I keep expecting it to explode but it never has.