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Made 6.25" focuser parts today. 8.75" x 8.875" x 0.625" plate mounted in fixture with three MityBite XYZ pins
Finding X Y datum using center tool on tooling ball
Attachment 416416
Finding Z datum using height tool #1
Attachment 416418
X Y Z axis zeroed
Attachment 416420
Fly cutting part to 1/2" thickness
Attachment 416422
Fly cut plate
Attachment 416424
Cutting out part using 1/2" endmill
Attachment 416426
Nice job Don. Don’t ya love these machines.
Would be nice if they were 3 horsepower but I do just fine with 1.5. It just takes a little longer.
Its nice to see how people set things up. I keep thinking I should set up some sort of a small fixture plate maybe about 8" by 8" as most of the stuff I want to make would fit on it. I'm still a beginner and find that figuring out how to hold and orient things is harder than actually programming the machine. Can you recommend a type of mitee bite that would be good to start out with?
I used mitee-bite locating pins to locate my fixtures on the mill bed. I bored two holes in the mill bed for two locating pins one round and one diamond shaped. https://www.miteebite.com/products/l...ns-and-liners/Quote:
Originally Posted by upnorth
Attachment 416558
Attachment 416560
I don’t make big parts on my 1100. Actually, if I can’t hold a half dozen parts in one hand, they’re too big for me.
Usually, when I design a fixture, I’ll design it to hold at least 4 parts and I design the fixture so one corner of that fixture is X zero Y zero. Then Z zero is the top of the part not the top of the stock.
This part used every inch of Y travel so there was really no room on the 1100 for more than one of this part at a time. I don't like using a corner of the fixture as I use an edge finder that is not as accurate for me or as fast as using a tooling ball and center finder to find the X-Y datum. And for the angle fixture a tooling ball is definitely needed to locate the datum.
Don
I use the Mitutoyo 950-111 to set Z height and a Haimer for X and Y coordinates. I’ve had them both for close to 20 years.Quote:
Originally Posted by Don Clement
Two quick questions:Quote:
Originally Posted by Steve Seebold
I assume that your Haimer is a 3D Taster. If so, why not use it for Z in addition to X and Y?
I've wondered about the internal design of the Mitutoyo 950-111. Does it use an internal inclined plane to translate the vertical movement of the top button to horizontal movement or something fancier?
One has to touch the Mitutoyo 950-111 with a hardened tool to work? The thing I like about my tool #1 Z-height tool is that I measure the height of this tool offline on the surface plate in a Tormach fixture the same way as all the other tools. All other tool heights are relative to tool #1. That way when I find the Z-height by coming down on any surface such as a tooling ball on an angle fixture. Tool #1 also has plenty of over travel.
Don
Attachment 418332