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精密硬质合金铰刀能够加工出1～2级精度和8～10级表面光洁度的孔。直径在10毫米以内的孔用整体铰刀或者用有整体工作部分的铰刀加工;对于较大直径的孔,采用锒焊或粘结硬质合金刀片的饺刀来加工。合理的结构要素和使用条件是在钢4OX(HRC28～32)和30ХГСА(HRC28～32)及钛合金BT5上加工直径为3～24毫米、长度为10～14毫米的1级和2级精度孔时确定的。
Precision carbide reamers can produce 1 to 2 precision and 8 to 10 surface finish holes. Holes up to 10 mm in diameter are machined with integral reamers or reamers with integral working sections; for larger diameter holes, dough bladed or bonded cemented carbide inserts are used. Reasonable structural elements and conditions of use are processed on steel 4OX (HRC28 ~ 32) and 30ХГСА (HRC28 ~ 32) and titanium alloy BT5 diameter of 3 to 24 mm, length of 10 to 14 mm of the primary and secondary precision holes When determined