龙门刨床横梁升降机构的电气控制设计论文.doc

白城职业技术学院毕业设计说明书 龙门刨床横梁升降机构的电气控制设计 学生姓名： 专业班级： 指导教师： 职 称： 起止日期： 2012.3.5～2012.6.14 白 城 职 业 技 术 学 院 摘 要 龙门刨床，具有门式框架和卧式长床身的刨床。龙门刨床主要用于刨削大型工件，也可在工作台上装夹多个零件同时加工，是工业的母机。龙门刨床的工作台带着工件通过门式框架作直线往复运动，空行程速度大于工作行程速度。横梁上一般装有两个垂直刀架，刀架滑座可在垂直面内回转一个角度，并可沿横梁作横向进给运动龙门刨床；刨刀可在刀架上作垂直或斜向进给运动；横梁可在两立柱上作上下调整。一般在两个立柱上还安装可沿立柱上下移动的侧刀架,以扩大加工范围工作台回程时能机动抬刀，以免划伤工件表面。机床工作台的驱动可用发电机－电动机组或用可控硅直流调速方式,调速范围较大,在低速时也能获得较大的驱动力。有的龙门刨床还附有铣头和磨头，变型为龙门刨铣床和龙门刨铣磨床，工作台既可作快速的主运动，也可作慢速的进给运动，主要用于重型工件在一次安装中进行刨削、铣削和磨削平面等加工Abstract Longmen planer, with portal frame and horizontal long bed planer. Longmen planer is mainly used for planing large workpiece, is also available on the platform with multiple parts and processing, is the industrial tools. Longmen planer workbench with the workpiece through the door frame to do straight reciprocating motion, air travel faster than the speed of working stroke. Beams are usually equipped with two vertical turret, turret sliding seat is in a vertical plane rotating an angle, and along the beam transverse feed motion of planer tool available in Longmen; support for vertical or inclined feed motion; beam in two columns on the upper and lower adjustment. General in the two column is also provided along the column moved up and down the blade frame, to expand the scope of processing work station return can motor lifting, so as not to scratch the workpiece surface. The work table of the machine tool drive available generator motor group or SCR DC speed regulation, speed range is larger, at low speed can obtain larger driving force. Some Longmen planer with milling head and grinding head, variant for planer milling machine and planer milling machine, bench can be fast motion, also can be used for the slow movement of the feed, mainly for heavy workpieces in an installation for planing, milling and grinding plane processing this paper is the design of Longmen planer. Lifting automatic control circuit design (not consider picking up ). The m