anyone know anything about these spindles, they have videos of them checking the runout on the "inside" of spindle..?
http://ugracnc.com/index.php/online-...-v-24000-rpm-r
http://ugracnc.com/index.php/online-...-v-24000-rpm-r
spindle again
- Thread starter 2backunderme
- Start date
I don't see any videos. Your link isn't working, but I visited the site. By inside of the spindle, do you mean the taper? If the taper isn't accurately machined, a collet will not mate right and there will be runout. That is what conetip was reffering to regarding truing up the taper of a chinese spindle.
by nature cheap ($5k or less) spindle tapers are going to have minor discrepancies, collets are not going to be totally round and tooling out of tolerance, etc, etc. The only way to beat the game is to be willing to fix existing issues or have a budget that will afford super high quality stuff up front. Unfortunately the price goes up exponentially and quality of tooling only gets slightly better. Even then your making cues so unless you keep everything totally immaculate then your going to have runout with best spindle on earth.
I've said it more than a few times, a bit of runout on a spindle can be your friend in cuemaking if you use it to your advantage unless of course your using .005-.010 endmills on a regular basis
I've said it more than a few times, a bit of runout on a spindle can be your friend in cuemaking if you use it to your advantage unless of course your using .005-.010 endmills on a regular basis
https://www.youtube.com/watch?v=qsM_YYDmJIo
Here is a video I did about some bad collets from Ali express. They claimed a concentricity to 0.015mm or 0.0006 inches. That's fine for a lot of things in reality.
As you can see in the video it is more than 0.15mm not concentric. I then took the test piece out of the collet and held in the 3 jaw chuck. The test bar is not perfect as it is just a cut off from an ejector pin. But it is still better than 0.02mm and was not adjusted or indicated to be where it is.
I could not return these junk collets, but have shared this to show that just because they claim one thing, don't believe them.
Most things can be corrected one way or another, just depends if you really want it fixed and have the patience to fix it.
With my spindle that I fixed, I have brought the high precision series of collets from RegoFix. They claim 0.005 mm run out or better. Even at 60mm from the collet face the test bar, (ground 6mm carbide blank) was less than 0.01mm T.I.R . Better collets are available from BIG Daishowa or BIG Kaiser. This link is to some of the very best collets available. http://us.bigkaiser.com/products/multiple/collets.html
Neil
Here is a video I did about some bad collets from Ali express. They claimed a concentricity to 0.015mm or 0.0006 inches. That's fine for a lot of things in reality.
As you can see in the video it is more than 0.15mm not concentric. I then took the test piece out of the collet and held in the 3 jaw chuck. The test bar is not perfect as it is just a cut off from an ejector pin. But it is still better than 0.02mm and was not adjusted or indicated to be where it is.
I could not return these junk collets, but have shared this to show that just because they claim one thing, don't believe them.
Most things can be corrected one way or another, just depends if you really want it fixed and have the patience to fix it.
With my spindle that I fixed, I have brought the high precision series of collets from RegoFix. They claim 0.005 mm run out or better. Even at 60mm from the collet face the test bar, (ground 6mm carbide blank) was less than 0.01mm T.I.R . Better collets are available from BIG Daishowa or BIG Kaiser. This link is to some of the very best collets available. http://us.bigkaiser.com/products/multiple/collets.html
Neil