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作 者 ：刘勤 王启生 王德源

期 刊 ：林业科学 1990年 26卷 6期 页码：527-532

关键词：链锯；锯链；偏磨损；

Keywords:Chain Saw, Saw chain, Leaning wear,

摘 要 ：通过对国内外万能锯链负荷工作时的受力分析,发现现有万能锯链的切齿组件的设计几何参数不尽合理。因而,造成正压合力集中,促使连接片偏磨,缩短了锯链寿命。同时,偏磨后的切齿组件切削功能恶化,影响了链锯机械性能的发挥。为此,重新设计了切齿组件,使正压合力趋向多点均匀分布。经生产、台架试验证明,新型锯链的使用寿命,是国产锯链的2倍左右,是斯蒂尔锯链的1.5倍;切削效率比国产锯链提高35—116.7%,比奥利根锯链提高3—4%。同时,切齿组件在整个生产过程中,始终保持着良好的切削状态和原设计的主要几何参数。证明“正压合力多点均匀分布”的设计理论是克服连接片偏磨的可靠途径。

Abstract:The analysis of the loading force of the home-made and introduced saw chain shows that the designed parameters of the cutting teeth components of the existing universal saw are not completely reasonable. LF serulfs in concenfration of the resulfant of normal pressure, causes leaning wear of links,and shortens the working life of chain. Meanwhile, the function of the worn cutting teeth component is considerably reduced, which affects the mechanical properties of chain saw. In order to reducl there problems, the cuffing teeth component is redesigned in order that the resulfant of normal pressure is distributed uniformly on many points, it is demonstrated through pooduction and tests on the test platform that the working life of the new chain is as about two times as that of the Romemade ones and 1.5 times as that of STIHL in West Germany, its cutting efficiency is 35—116.7 percent higher than that of home-made chain and 3—5 percent than that of OREGON. At the same time, the cutting teeth component is always in a good cutting state and keeps main parameters of the original derignation in the whole production. It is proved that the desiging theory"resultant of normal pressure is distributed uniformly on mang points"is a reliable way to overcome leaning wear of links.

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