滾齒機外支架結(jié)構(gòu)設(shè)計摘要：齒輪加工機床是一種技術(shù)含量高且結(jié)構(gòu)復(fù)雜的機床，外支架是機床的重要部件。外支架在機床的一側(cè),其中包含了后立柱、橫梁、活動支架及部分傳動系統(tǒng),活動支架連接著傳動箱。外支架固定在工作臺殼體上，它上面有燕尾型導(dǎo)軌。支承工件心軸的支臂，可沿導(dǎo)軌移動。支臂上有一專用手柄供支臂夾緊在支架上之用。當使用外支架時超過其最大加工直徑時，就應(yīng)取下外支架，才可加工。主電機開動后，活動支架進行位置的調(diào)整,使工件保持在最佳位置?；顒又Ъ芤紤]其結(jié)構(gòu)的要求，設(shè)計出來的活動支架安裝好后不能與其他的零部件干涉。后立柱及橫梁的設(shè)計要使該部分保持一定的平穩(wěn)性。在設(shè)計過程中，要考慮到運動和動力的要求，還要注意不能使結(jié)構(gòu)太臃腫。設(shè)計出的外支架能使機床滿足強度、剛度及其壽命、工藝性與經(jīng)濟性等方面的要求；使機床運行平穩(wěn)，工件可靠，結(jié)構(gòu)合理，便于裝卸、維修與調(diào)整，最后能滿足加工要求，保證加工精度。關(guān)鍵詞：滾齒機；活動支架；后立柱；橫梁Structural Design of Outer Support System of the Gear-hobbing MachineAbstract: The gear finishing lathe is one kind of technical content high also the structure complex engine bed, the outer support is the engine bed important part. Outer support in engine bed one side, after in which has contained the column, the crossbeam, the movable support and the partial transmission system, the movable support is connecting the gearbox. The outer support fixes on the work table shell, its above has the dovetail guide rail, the supporting work piece spindle arm support, may move along the guide rail, on the arm support has a special-purpose handle matter for the arm support clamp on the support using, when uses the outer support when surpasses its biggest processing diameter, should take down the outer support, only then may process. After the host electrical machinery starts, the movable support carries on the position the adjustment, makes the work piece to maintain at the best position, the movable support must consider its structure the request, after designs the movable support installs cannot and other spare part interference, the latter column and the crossbeam design must make this part to maintain certain stability. In this design process, must consider the movement and the power request, but also must pay attention cannot cause the structure too to be extremely fat. Designs the outer support can cause the engine bed to satisfy aspect and so on intensity, rigidity and life, technology capability and efficiency requests; Causes the engine bed movement to be steady, the work piece is reliable, the structure is reasonable, is advantageous for loading and unloading, the service and the adjustment, finally can satisfy the processing request, the guarantee processing precision. Key word: Gear-hobbing machine; Movable support; Latter column; Crossbeam