基于包络线的防风垃圾桶空间凸轮弧面设计  

Design of Spatial Cam Surface Used on Windproof Refuse Bin with Envelop Method

作　　者：张贝 ZHANG Bei(School of Oceanography,Shanwei Institute of Technology,Shanwei 516600,China;College of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510000,China)

机构地区：[1]汕尾职业技术学院海洋学院,广东汕尾516600 [2]华南理工大学机械与汽车工程学院,广东广州510000

出　　处：《机械》2024年第5期64-73,共10页Machinery

基　　金：广东省高等教育学会职业教育研究会项目(GDGZ21Y027);汕尾职业技术学院高层次人才科研启动专项(SKQD2021B-025);广东省教育厅重点领域专项(2021ZDZX4111)。

摘　　要：针对目前凸轮的设计方法不能实现某些特殊零部件从动件空间准确动作的设计要求,提出采用包络线方法的凸轮轮廓弧面设计方法,该设计方法可实现凸轮准确控制垃圾桶盖因风力大小改变开度的能力。首先基于凸轮的设计原则,建立简单平面凸轮的包络曲线模型,对包络线方程进行求解,然后利用感风桶风力方向的所在平面建立相应包络线曲线模型,形成相交空间包络曲线簇,而后组集凸轮轮廓点数据,建立平行空间包络曲线簇,通过随后的轮廓点拟合建立平行空间包络曲线簇方程,并考查空间包络曲线拟合方程参数随曲线簇垂直方向坐标的变化,而后通过两组拟合参数建立曲面求解数值方程。该空间凸轮轮廓弧面设计方法可准确设计凸轮的空间轮廓,并能实现凸轮的准确控制。该空间凸轮轮廓弧面设计方法过程连续,求解规范可实现程序移植推广。The present cam design method cannot meet the requirements for accurate spatial movement of certain spatial components and followers.An envelope-based cam design method is proposed,which can make the cam to accurately control the openning of refuse bin cover due to changes in wind force.According to cam design principles,cam envelop curve is modeling in simple plane and the envelop equation is solved.Then a corresponding envelop curve is modeling in other plane where the wind direction of the wind sensing bracket is located..Thus clusters of intersecting spatial envelope curves are formed.To organize cam profile point data,parallel spatial envelop curve clusters are built.With regression of profile point the parallel spatial envelop curve clusters equation is built.The regression parameter is observed with coordinate variation which is vertical to curve clusters.Furthermore the numerical equation is observed.The design mehtod can accurately build cam spatial profile and realize accurate control of the cam.The design method has a process and the solution specification can achieve program portiing and promotion.

关 键 词：空间凸轮设计 包络线方程 防风垃圾桶 感风桶 

分 类 号：TH112.2[机械工程—机械设计及理论]