The introduction is the strong and straight cone the wheel gear pare away to process the inside, whetting center the bore, whetting the inside bore in the strong wheel gear.
介绍在硬齿面直齿锥齿轮刮削加工中研中心孔磨内孔的技术要求；机床调整，切削速度，刮削量及次数的选择。
Cause for this is a bore that has not a precise fitting. The bore was assumingly not in straight condition.
导致的原因是内腔管未精确安装，估计孔眼未处在笔直状态。
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