Blanchard Grinding Thin Materials
Blanchard Grinding Thin Materials
(OP)
Quick question here for you guys, I have some mild steel spacer plates about 175mm in dia, that I need to make to several different thicknesses (1mm, 2mm, & 2.9mm). My problem is last time we tried this with our surf. grinder the parts bowed up and warped with all the heat and we need to keep a parallelism call-out of 0.010mm. Is this even possible to keep the parallelism within 0.010 over the diameter of 175mm with such a thin plate?





RE: Blanchard Grinding Thin Materials
RE: Blanchard Grinding Thin Materials
With a magnetic chuck the thinner parts would be parallel, but not flat when done.
I wonder if it would be easier to start with nice sheet stock and limit machining to holes and shape
RE: Blanchard Grinding Thin Materials
RE: Blanchard Grinding Thin Materials
RE: Blanchard Grinding Thin Materials
Depending on your production requirement you cna chalk out both approach through the surplus market . The laboratory type or the Speedfam type if production is high.
http://www.speedfam.com/en/product02.html
http://www.buehler.com/equipment/grindingpolishing...
I have concur that a very good approach would be to get the approbate shim or feeler gauge stock and start from that. One caveat is that the precision o of the different materials is quite variable. When i was making high pressure rupture disks I would have to buy 10 rolls 0.008" SS shim stock to get 3-4 that were on the money. This was considerably cheaper that ordering super precision stock
You can get an idea of what's out there from these sites.
http://www.precisionsteel.com/about-us
http://www.easterngage.com/stock-heavy-thickness-f...