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介绍了机床弹性滑键齿轮变速换挡机构的结构原理 ,并对弹性滑键齿轮变速换挡机构进行理论分析。建立了弹性滑键失稳分析和振动系统的简化模型 ,推导出弹性滑键顺利滑移的条件 ;失稳时临界压力Pscr计算公式Pscr及换挡时锲入齿轮键槽的时间T′。为合理设计弹性滑键齿轮变速换档机构提供了理论依据。
The structure and principle of gearshift gearshift mechanism of the elastic sliding key of the machine tool are introduced, and the theoretical analysis is made on the gearshift gearshift mechanism of the elastic sliding key gear. The instability analysis of slippery slide and the simplified model of the vibration system are established. The conditions for smooth slipping of the elastic sliding key are deduced. The calculation formula of the critical pressure Pscr in the event of instability and the time T ’of wedgeing into the gear keyway during gear shifting are established. In order to rationally design a flexible sliding gear gear shift gear mechanism provides a theoretical basis.