在一次装夹中尽可能完成所有工序

      为了充分发挥数控机床的高效率,除选择合适的加工件和必须掌握机床特性外,还必须在编程之前正确地确定好加工方案。工序划分在数控机床上加工零件,工序必须集中,要在一次装夹中尽可能完成所有工序,因此要划分好工序。其工序划分的特点为先粗后精先面后孔刀具集中为了减少换刀次数,缩空行程,减少不必要的定位误差,应采用按刀具集中的工序办法,即将零件上用同一把刀加工的部位全部加工完成后,再换另一把刀来加工。工件装夹尽量采用组合夹具,同时夹具必须有足够的刚度和强度。工艺编制要选用最合理最经济最完善的加工方案,即走刀路线最短,走刀次数和换刀次数要尽可能少加工安全等。加工路线的确定数控机床加工路线的确定至关重要,因为它关系到工件的加工精度和表面粗糙度。对于连续铣削的轮廓,尤其是铣削圆弧时,一定要注意刀具的切入和切出,尽量避免在连接处重复加工,否则会出现明显的界限痕迹。粗铣刀的直径要小一些,精铣刀的直径要大些,最好能包容整个加工面的宽度。加工精度要求较高的凹槽时,选用直径较槽宽小一些的立铣刀,先铣槽的中部,然后利用半径补偿来铣削两边,直到达到精度要求。在进行深孔加工时,特别要注意冷却和排屑,一般选用钻深孔子程序进行钻削,即工进一段后钻头退出排屑,再工进,再排屑直至孔深。二数控编程技术中机床防撞的解决方案数控机床的加工过程中,有一点至关重要,那就是在编制程序时,一定要避免使机床发生碰撞。(完)

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    Qingdao Jiujin Machinery Co., Ltd , https://www.jiuinmachine.com

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