【導讀】現(xiàn)回轉(zhuǎn)、平移、翻轉(zhuǎn)等復雜運動，是一種高效的混合設(shè)備。在該設(shè)計任務(wù)書中，我綜合。對空間6桿機構(gòu)進行運動分析，最后繪制出該混合機的裝配圖和各主要零件的零件圖。組分可有懸殊的重量比，混合率達％以上，是目前各種混合機中的一種較理想產(chǎn)品。筒體裝料率大，最高可達90％，效率高，混合時間短。處為圓弧過渡，經(jīng)過精密拋光處理。多向運動混合機的優(yōu)勢在于其特殊的工作原理，以。及桶體結(jié)構(gòu)的設(shè)計無死角，不污染物料，出料方便，清洗容易，操作簡單等優(yōu)點。器內(nèi)作旋轉(zhuǎn)、翻轉(zhuǎn)、湍動和剪切作用，使物料在混合時不產(chǎn)生積聚現(xiàn)象，對不同比重，鐘即可混合均勻。既提高了工作效率，又達到了極高的均勻度，混合均勻性達到%. 因其最大裝載系數(shù)可達這一特點，大大縮短了混合。物料的時間，提高了混合物料效率。

　　

【正文】 輪接觸計算的不精確性是一個比載荷分布更大的影響因素。 采用有限元法的精確建模 斜面體齒輪的應(yīng)力也能利用 有限元法計算。圖 14 是齒輪橫斷面建模的實例。圖 15給出了使用 PERMAS軟件由計算機生成的主動齒輪在嚙合位置的輪齒嚙合區(qū)模型和應(yīng)力分布計算值 [7]?？蓪Χ鄠€嚙 35 合位置進行計算 ,并能求出齒輪旋轉(zhuǎn)產(chǎn)生的傳動誤差。 承載能力和噪聲試驗 在交叉軸背靠背試驗臺上對 AWD 變速器進行試驗以測量其承載能力 ,圖 16。試驗齒輪采用不同的修正 ,以確定它們對承載能力的影響。承載能力的試驗與有限元計算結(jié)果相當吻合。值得注意的是 ,由于大端硬度提高使得載荷曲線圖朝大端由一個額外的移動。這種移動在替代的圓柱齒輪副計算中不能 被辨別。在進行承載能力試驗的同時 ,傳動誤差和旋轉(zhuǎn)加速度的測量在通用噪聲試驗臺上進行 ,圖 17。除了載荷影響外 ,這些試驗還測量了附加軸線傾斜所引起的噪聲激勵 ,關(guān)于軸線附加傾斜 ,試驗中未發(fā)現(xiàn)有明顯的影響。 36 6 仿真制造 借助于仿真制造 ,可獲得機床設(shè)置及連續(xù)范成磨削和產(chǎn)生齒廓扭曲的運動。齒廓受迫扭曲現(xiàn)象可在變速器設(shè)計階段就被認識到并與承載能力及噪聲一并進行分析。斜面體齒輪制造仿真軟件由 ZF 公司開發(fā) ,詳見[9]。 適用于斜面體齒輪的制造方法 斜面體齒輪僅可用范成法加工 ,因為齒廓形狀沿齒寬方向有明顯的變化 。盡管是錐角非常小的斜面體齒輪 ,必須承認在修整處理中仍然會出現(xiàn)齒廓角度偏差。滾刀最方便用于預(yù)切削。理論上也可采用刨削 ,但是 ,所需的運動在現(xiàn)有機床上很難實現(xiàn)。內(nèi)齒圓錐齒輪僅能用類似小齒輪的刀具精確制造 ,如果刀具軸線和工具軸線平行并且錐角是通過改變中心距生成的。如果內(nèi)齒輪利用軸線傾斜的小齒輪刀具如同加工差速器錐齒輪那樣來制造的話 ,將導致齒溝凸起和無修正運動的齒廓扭曲。對于小錐角而言這些偏差足夠小 ,可以被忽略。對于終加工 ,范成法螺旋磨削是一個最佳選擇。如果工件或機床夾具能被另外傾斜 ,也可采用部分范成法。如果齒輪錐 角處于機床控制范圍內(nèi) ,拓撲磨削工藝也是可能的 (例如 5軸機床 ),但是會耗費巨大的努力。原則上 ,珩磨等方法也能被用于加工 ,但是 ,在斜面體齒輪應(yīng)用這些方法仍需大量的開發(fā)工作。雙齒側(cè)范成法磨削工藝并利用中心距弧形減少方法可實現(xiàn)齒溝凸起的目標。該方法所得到的齒廓扭曲與造成嚙合間隙的齒廓扭曲相反。因此該方法可在很大程度上補償齒廓扭曲并可承受比圓柱齒輪更大的載荷。 工件表面形狀 以下的關(guān)于工件描述被應(yīng)用在仿真中 : 174。 原始齒輪 (留有磨削所需的余量 ) 37 174。理想齒輪 (來自齒輪數(shù)據(jù) ,無齒側(cè)修形 ) 174。完成的齒輪 (具有制造偏差和齒 側(cè)修形 ) 參考文獻： 1. 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Technol., vol. 53, no. 5,pp. 1607 1622, Sep. 2020. 38 附件 2：外文原文 [ABSTRACT] Conical involute gears (beveloids) are used in transmissions with intersecting or skew axes and for backlashfree transmissions with parallel axes. Conical gears are spur or helical gears with variable addendum modification (tooth thickness) across the face width. The geometry of such gears is generally known, but applications in power transmissions are more or less exceptional. ZF has implemented beveloid gear sets in various applications: 4WD gear units for passenger cars, marine transmissions (mostly used in yachts), gear boxes for robotics, and industrial drives. The module of these beveloids varies between mm and 8 mm in size, and the crossed axes angle varies between 0176。and 25176。. These boundary conditions require a deep understanding of the design, manufacturing, and quality assurance of beveloid gears. Flank modifications, which are necessary for achieving a high load capacity and a low noise emission in the conical gears, can be produced with the continuous generation grinding process. In order to reduce the manufacturing costs, the machine settings as well as the flank deviations caused by the grinding process can be calculated in the design phase using a manufacturing simulation. This presentation gives an overview of the development of conical gears for power transmissions: Basic geometry, design of macro and micro geometry, simulation, manufacturing, gear measurement, and testing. 1 Introduction In transmissions with shafts that are not arranged parallel to the axis, torque transmission is possible by means of various designs such as bevel or crown gears , universal 39 shafts , or conical involute gears (beveloids). The use of conical involute gears is particularly ideal for small shaft angles (less than 15176。), as they offer benefits with regard to ease of production, design features, and overall input. Conical involute gears can be used in transmissions with intersecting or skew axes or in transmissions with parallel axes for backlashfree operation. Due to the fact that selection of the cone angle does not depend on the crossed axes angle, pairing is also possible with cylindrical gears. As beveloids can be produced as external and internal gears, a whole matrix of pairing options results and the designer is provided with a high degree of flexibility。 Table 1. Conical gears are spur or helical gears with variable addendum correction (tooth thickness) across the face width. They can mesh with all gears made with a tool with the same basic rack. The geometry of beveloids is generally known, but they have so far rarely been used in power tran