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Can we talk about the way we set up our tool offsets on the old Haas VF2?
For years I just touched off each tool to the part top, but after a bad crash from thermal growth, our shop lead showed me a trick using a 1-2-3 block on the table as a fixed reference point. Now I set all my tools to that block first thing in the morning, and my depth consistency on aluminum parts has been way better, even when the shop heats up. How do you guys handle tool offsets for long runs when the machine warms up?
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rosew371mo ago
That block trick is just moving the problem around. You're still referencing off the table, which moves too. The real fix is to stop touching off to the part at all. Use a preset gauge off the spindle nose. The distance from the spindle face to the tool tip doesn't change when the table grows. My lengths stay dead on all day, hot or cold. Touching off any surface the table can move is asking for trouble.
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