| 摘要 |
A high energy magnetizer/demagnetizer on a non-operative portion of a tool holder includes a magnetizer/demagnetizer body on the non-operative portion of the tool holder and defining a mounting axis. At least one permanent magnet is formed of a magnetized material having North and South poles defining a magnetic axis and arranged on the body of the tool holder to permit selective placement of a magnetizable element at at least one position along the magnetic axis at a predetermined distance from one of the poles to magnetize the element and placement of the magnetizable element at a selected distance from the other of the magnetic poles greater than the predetermined distance to demagnetize the element. In this way, a magnetizable element may be initially magnetized by the magnetizer on the tool holder by positioning same adjacent to one of the poles mounted on the non-operative portion of the tool holder and optionally subsequently demagnetized by positioning the magnetizable element a selected distance from the other of the poles.
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