本文通过对在双滚柱机上滚压螺纹时，形成尺寸链的分析，找出影响螺纹精度的因素，并提出了解决途径。
Through the analysis of dimensional chain when rolling thread on double-roller machine tool, the effective factors of thread precision were presented, and the way to solve was given.
分析了缆式防滑链滚柱的工作条件，研究了为满足其工作性能要求应采取的热处理工艺，并对热处理工艺进行了优化。
The conditions of cable tyre chain rollers were analyzed. In order to supply its working capability, the heat-treatment procedure is raised and optimized.
产品主要包括系泊系列（导览滚轮、导缆孔、滚柱导览器、、掣链器）、盖系列（油舱盖、小舱盖、人孔盖等）。
JYZY's main scope of products consists of mooring series of products like roller fairlead, roller, chock and chain stopper, etc.
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