一种相贯线曲线通用切割机的研制

Development of an automatic cutting machine for intersection curve-

大直径筒体的相贯线曲线焊接,为了得到高精度的切割尺寸,保证焊接质量,提高切割效率,降低成本。利用正弦曲线机构将简单的机械运动变为割矩端部复杂的曲线运动,实现了相贯线曲线运动轨迹的自动切割,只需改变正弦曲线运动机构的偏心机构回转半径e就可实现不同直径的筒体与接管相交所形成的相贯线曲线的自动切割。该割炬绕工件的转动与上下的同步移动采用直接传动,动作协调、传动平稳,避免了传动积累误差,可在多种位置点火切割,结构简单,操作方便,工作可靠。通过应用,取得了明显的经济效益,降低了成本,提高了效率3～5倍,切割质量稳定可靠。是一种低成本自动化相贯线曲线的自动切割通用设备。经过改进,用焊枪代替割矩,还可对相贯线曲线实现自动焊接。

For the automatic cutting machine for intersection curve of large-diameter cylinders, to achieve the high accuracy of cutting dimension,to guarantee the welding quality and to lower the cost,automatic cutting of motion locus of intersection curve can be realized by means of sinusoidal mechanism.The cutting machine can control the complicated moving locus with simple sinusoidal curve moving mechanism.By adjusting the gyration radii of the eccentricity mechanisme,automatic cutting for intersection curves of pipes and cylinders with different diameters can be realized easily.Direct transition is applied for cutting torch rotation and simultaneous to and from motion with the harmonious action and smooth transition and avoiding accumulating errors,improving the precision of cutting torch moving repeatability and cutting can be made at different positions.The machine with simple structure and easy to operate.Profound economic effect is gained in practice after the cutting machine is used in production.Cutting efficiency is 3~5 times than that when the manual cutting was adopted and the cutting quality is stable and reliable.The cutting machine is of automatic, universal and low cost type for intersection curve cutting.If modified ,with welding torch instead of cutting torch ,the machine can also be used for automatic welding of intersection curve.