Chip breaking structure of mini cutting bit
AssigneeHao Juen Technology Co., Ltd.
InventorsSHINN LIANG CHANG, TZU CHI CHAN, MENG HUA LI, I HUNG WANG
Life of this patent
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Abstract
A mini cutting bit includes a shank and a cutting part. The cutting part has a first spiral portion and a second spiral portion parallelly and twistedly formed thereon. The cutting part further has two chip removal flutes between the first and the second spiral portions. The first spiral portion has a first chip breaking flute on a top thereof while the second spiral portion has a second chip breaking flute. Widths of the first and the second chip breaking flutes are smaller than that of the tops of the first and the second spiral portions respectively.
Claims8
A mini cutting bit, comprising:
- a shank;
- and
- a cutting part, which is connected to an end of the shank, having a first spiral portion, a first chip removal flute and a first chip breaking flute, wherein the first chip removal flute is parallel to the first spiral portion;
- the first chip breaking flute is formed on a top of the first spiral portion, and a width of the first chip breaking flute is smaller than that of the top of the first spiral portion.
Dependencies are inferred from the claim text.