OK, here is how I did it tonight:
I have build a fixture for both sides of the gate. It's just a L-iron with a M3 threat (screw with diameter 3 mm = 0.12 inch). A regular M3 threat has 0.5 mm pitch. So one turn lifts it 0.5 mm (0.02 inch) quite fine enough for fine adjustment - especially with a long wrench:
- 2014-02-27.223424-k.jpg (123.93 KiB) Viewed 12206 times
Than came the high tech. The Faro Gage is a 3D hand guided measuring unit which I am using at work for measuring the lathe beds of our customers. It has a display resolution of 0.0001 mm = 0.000004 inch - see the monitor at the right. With this it was done quite easy because the mill bed was made on an high class 5 axis mill and all guidances are new and quite accurate. Only thing is to learn in which direction everything bends while fastening the screws of the mill frame. At least I have no greater deviation than 0.05 mm equal +/- 0.025 mm (0.002 inch or +/- 0.01 inch) on all the distances (365 mm in X, 435 mm in Y) - I think that is quite OK for a pattern mill.
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Ready for the first fight at the weekend. Here shown with a diameter 10 mm ball mill (0.4 inch) which here reaches 85 mm out of the chuck (3.35 inch). The spindle motor is the quite common Chinese-Ebay water cooled model with an ER 20 chuck. It should consume 2.2 kw (don't know how much of this ever will reach the endmill
) It is driven by a single phase to 3 phase frequency converter from 6,000 up to 24,000 rpm.
- 2014-02-28.000620-k.jpg (143.69 KiB) Viewed 12206 times
Next will be to build the cable guide and the dust covers...
