4749| 22
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深孔加工 |
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點(diǎn)評(píng)
細(xì)長(zhǎng)孔(軸)定義,徑長(zhǎng)比小于1:20即為細(xì)長(zhǎng),壓桿需要驗(yàn)證穩(wěn)定性。你要能找到一個(gè)鉆頭,直徑3.3,長(zhǎng)度1米多,估計(jì)自重都會(huì)讓鉆頭發(fā)生明顯彎曲,還鉆個(gè)鏟鏟。
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點(diǎn)評(píng)
很深的狠字是如何定性的。。。。3mm的孔,60mm深就可以說(shuō)很深了,但你這個(gè)1米多。。。是狠狠狠深。
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