采用冷轧工艺制造的零件品种甚多:从转向器的小螺旋齿轮,到离合器摩擦片的支座、传动轴以及转向齿条。对这些零件,其原材料可以采用经粗车的轴、杯形或盘形薄板管以及管材。 在轴上轧制齿轮 Ernst Grob公司用C6和C9系列替代迄今的所有轧...采用冷轧工艺制造的零件品种甚多:从转向器的小螺旋齿轮,到离合器摩擦片的支座、传动轴以及转向齿条。对这些零件,其原材料可以采用经粗车的轴、杯形或盘形薄板管以及管材。 在轴上轧制齿轮 Ernst Grob公司用C6和C9系列替代迄今的所有轧机,可以在轴上轧制出模数大到3.5的齿轮。两种轧机配以相应的机构,也可以用来轧制螺旋齿轮(图1)。按标准,轧机有5个以上的运动轴。工具和工件的旋转轴通过一个所谓的轧制模实现电气耦合。可选择的第六个轴(所谓移位轴)是用来控制布置在轧头不同位置上的不同轧辊。利用移位轴在轧机的一个工作循环内在工件上甚至可以轧制出三个不同的齿轮。轧机在结构上有下列特点:展开更多
3 D roll-forming for high strength steel sheets is a new technology at present.Double racks gear 3D roll forming machine developed by our research group can be used to perform variable cross section roll forming for h...3 D roll-forming for high strength steel sheets is a new technology at present.Double racks gear 3D roll forming machine developed by our research group can be used to perform variable cross section roll forming for high strength steel.In the paper,a dynamic model of 8-DOF double rack gear 3D roll-forming machine is established by the method of Lagrange equation.The expression of the angle acceleration of the system response is obtained by solving the dynamic equations.Through an actual engineering example,the dynamical characters of the 3D roll forming machine are revealed.The results can support the design of 3D roll forming machine.Meanwhile,the research will play an active role in the development of control system.展开更多
文摘采用冷轧工艺制造的零件品种甚多:从转向器的小螺旋齿轮,到离合器摩擦片的支座、传动轴以及转向齿条。对这些零件,其原材料可以采用经粗车的轴、杯形或盘形薄板管以及管材。 在轴上轧制齿轮 Ernst Grob公司用C6和C9系列替代迄今的所有轧机,可以在轴上轧制出模数大到3.5的齿轮。两种轧机配以相应的机构,也可以用来轧制螺旋齿轮(图1)。按标准,轧机有5个以上的运动轴。工具和工件的旋转轴通过一个所谓的轧制模实现电气耦合。可选择的第六个轴(所谓移位轴)是用来控制布置在轧头不同位置上的不同轧辊。利用移位轴在轧机的一个工作循环内在工件上甚至可以轧制出三个不同的齿轮。轧机在结构上有下列特点:
基金Supported by the National Science and Technology Supporting Plan Projects of China (No.2011BAG03B03).
文摘3 D roll-forming for high strength steel sheets is a new technology at present.Double racks gear 3D roll forming machine developed by our research group can be used to perform variable cross section roll forming for high strength steel.In the paper,a dynamic model of 8-DOF double rack gear 3D roll-forming machine is established by the method of Lagrange equation.The expression of the angle acceleration of the system response is obtained by solving the dynamic equations.Through an actual engineering example,the dynamical characters of the 3D roll forming machine are revealed.The results can support the design of 3D roll forming machine.Meanwhile,the research will play an active role in the development of control system.