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WMello
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Escape Wheel
The making
180 cuts (6 x 30). Really tired of turning cranks.
Crossing on the CNC
Wagner
The making
180 cuts (6 x 30). Really tired of turning cranks.
Crossing on the CNC
Wagner
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- Nov 18, 2012
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- 1,352
Hi Wagner. I have been wondering how I would make an escape wheel if I had to repair a clock with a buggered up E/W. Did you do it all with a slitting saw?
And did you have to tilt the milling head? Or could you do it by off setting the RT?
David
And did you have to tilt the milling head? Or could you do it by off setting the RT?
David
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Hi David.
All done with the slitting saw, no filing; total of six cuts in this wheel.
No tilting of the milling head. All done by offsetting the cut.
It was a challenge; the first try, not shown of course, did not work.
There was a lot of thinking and drawing on a cad program. Here a sketch for the first 4 cuts:
All done with the slitting saw, no filing; total of six cuts in this wheel.
No tilting of the milling head. All done by offsetting the cut.
It was a challenge; the first try, not shown of course, did not work.
There was a lot of thinking and drawing on a cad program. Here a sketch for the first 4 cuts:
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Yes, the same slitting saw (0.030 thick)
You can see the sequence of cuts on the picture on the previous post.
The tooth profile was defined in cuts 1 and 2. Cuts 3 to 6 removed all the material between teeth. For these cuts, the saw was kept at the same position, pointing to the center of the wheel so the root is concentric. Actually it is formed by six short straight lines (the face end of the saw - kerf).
For each sequence, set the height of the saw (mill head Z) for the offset and the mill table Y axis for the depth of cut.
Cut 30 times turning the rotary table by 12 degrees. New start position (angle), new Z, new Y and cut again 30 times...
It would be much harder without a DRO. And my rotary table is microcomputer controlled. Even so, this was 180 cuts in total. The wrists are sore...
You can see the sequence of cuts on the picture on the previous post.
The tooth profile was defined in cuts 1 and 2. Cuts 3 to 6 removed all the material between teeth. For these cuts, the saw was kept at the same position, pointing to the center of the wheel so the root is concentric. Actually it is formed by six short straight lines (the face end of the saw - kerf).
For each sequence, set the height of the saw (mill head Z) for the offset and the mill table Y axis for the depth of cut.
Cut 30 times turning the rotary table by 12 degrees. New start position (angle), new Z, new Y and cut again 30 times...
It would be much harder without a DRO. And my rotary table is microcomputer controlled. Even so, this was 180 cuts in total. The wrists are sore...
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Finial
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Escape Arbor
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Motion Work
Well, David, I'm not ready for that yet.
Well, David, I'm not ready for that yet.
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