MadModder
The Shop => Tools => Topic started by: Bolster on November 19, 2010, 02:17:26 PM
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Is that possible? Or is it crazy? Putting a cup-style grinding wheel in a vertical mill's quill and using it as a surface grinder? Obviously you'd have to shield/protect the ways....Anybody tried this?
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If your mill can get up to over 5000rpm, then yes.
Bogs
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I know nothing about surface grinders, but logic makes me think the spindle speed needed depends on the wheel size!? :scratch:
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If your mill can get up to over 5000rpm, then yes.
Bogs
Then I am screwed. 2000 is my top speed. Darn it.
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If your mill can get up to over 5000rpm, then yes.
Bogs
Then I am screwed. 2000 is my top speed. Darn it.
As mentioned, wheel size plays a role....just get a larger wheel to keep the feet per minute of the cutting edge up high enough.
Andrew
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I use up to 8" wheels on my surface grinder, and they are rated up towards 6K RPM.
I have used a large diamond lap at fairly low speeds under experimental circumstances, but that would require flood coolant and is limited to the materials you can use it on.
http://madmodder.net/index.php?topic=2232.0
I am also playing about with diamond coated laps, but that is a little in the future.
http://richontools.com/index.php?main_page=index&cPath=1_9
and their associated backing plates
http://richontools.com/index.php?main_page=product_info&cPath=45&products_id=797
Bogs
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The basics of a surface grinder are not all that complicated. The "issue" is defining a set of specifications that would make for a good overall project. The size of the unit is fairly easily varied, but I would need good definition as to the resolution of (downfeed, mostly) such a unit. Laying out such a design is fairly trivial once the specifications are set.
How about: 6 inches (150 mm) vertical feed with .0005 inch (0.01 mm) nominal vertical feed resolution; 18 inches (450 mm) longitudinal table travel X 8 inches (200 mm) crossfeed table travel; with a ø1.250 inch (ø31.75 mm) wheel spindle as a baseline? Personally, I prefer a pneumatic longitudinal drive, but a cable-type drive is doable. What criteria would be appealing here?
Irrational minds want to know... ;-)