| 摘要 |
A method and an apparatus for vertically calibrating a wire of a wire cutting electric discharge machine are provided. The vertical calibration apparatus includes a body, an upper calibration board and a lower calibration board attached to the body and parallel to the machine table, with a ring hole formed on the upper calibration board and on the lower calibration board respectively. The two ring holes have the same vertical axis. The method of wire cutting electric discharge machine vertical calibration comprises searching for the circle centers of the two ring holes by constantly touching the ring edge several times by the wire, then passing the wire through the circle centers. The method of determining the height of the upper holding guide and the lower holding guide for wire comprises utilizing formulae with given radii of the two ring holes, the height of the two ring holes relative to the table, the cone angle of the two ring holes with the same vertical axis, and a variable, which is a measurement from the upper holding guide or the lower holding guide located on the vertical wire passing the circle centers of the upper ring hole and the lower ring hole to a position of the inclined wire which touches the edge of the two ring holes.
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