| 摘要 |
A universal cutter structure includes a double-headed screw made of tungsten steel or steel. The double-headed screw has outer threads at front and rear sections thereof and a positioning block at a middle section thereof. The front and rear sections of the double-headed screw are screwed to an upper threaded trough of a cutter rod and a lower threaded trough of a cutter head, respectively. The positioning block engages with the cutter rod and the cutter head directly or indirectly such that the parts are tightened to be a one-piece cutter. When the double-headed screw is removed, the cutter rod is able to be coupled with a screw and a positioning block provided at a distal end of the cutter head. The present invention provides a better steadiness for processing and is convenient for replacement.
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