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公开(公告)号：US20190329308A1
公开(公告)日：2019-10-31
申请号：US16473450
申请日：2017-12-08
Applicant: A.L.M.T. Corp.
Inventor： Toshiaki SHINDO , Takuya ASANUMA
Abstract: A shaped diamond die includes a polycrystalline diamond, the polycrystalline diamond having a machining hole, wherein a length D of a side of the machining hole is 100 μm or less, a corner R is 20 μm or less, the shaped diamond die includes a bearing portion, a surface roughness Sa of the bearing portion is 0.05 μm or less, and an average grain size of the polycrystalline diamond is 500 nm or less.
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