一、长套车削工艺的改进在农场常见易损件中有多种铸铁轴承长套,每年都需要大批生产。长套孔的加工是车床上难度比较大的工艺,尤其是长套孔的长度与直径之比大于5,迫使刀杆细长,吃刀深度、走刀量及切削速度都受刀杆刚度的限制,加工效率低,质量差,锥度超限,光洁度也难以达到▽4。多年来,许多修造厂在长套的加工中都寻求过新方法:如用改进刀架的办法提高刀杆的刚度,改变刀具的角度来减小切削力等。经多年的摸索,我们用零件两端辅加刀杆支承的办法,显著地改善了刀杆的刚度,使加工效率提高一倍多。有 First, the improvement of the long sleeve turning process Common wear parts in the farm have a variety of cast iron bearing long sleeves, each need a large number of production. Long sleeve hole machining lathe is more difficult process, especially the length of the long sleeve hole diameter ratio greater than 5, forcing the arbor slender, eating depth, cutting speed and cutting speed are affected by the rigidity Limitation, low processing efficiency, poor quality, taper over, the finish is difficult to achieve ▽ 4. Over the years, many repairers have sought new ways of working with long sleeves: improving toolholder rigidity by changing toolholders, changing tool angles, and reducing cutting forces. After years of groping, we use both ends of the parts plus cutter bar support, significantly improved the rigidity of the bar, so that processing efficiency more than doubled. Have