摘要
在卧式振动光饰机上加工大型或特殊要求的工件时,需要采用夹具将工件固定,这样不但避免了工件之间的相互磕碰,同时也提高了加工效率。并且必须使工件在夹具上自由转动,以保证加工均匀性。工件埋入磨料不同深度,磨料的重力及磨料对工件的作用力有很大差异。通过分析卧式振动光饰机振动机体的运动,用EDEM软件模拟磨料运动,得出磨料的运动速度。并对工件的不同埋入深度,不同自转速度等情况构造正交实验,得出磨料在加工工件时的作用力,并运用极差法对结果进行分析,得出工件埋入磨料深度为切向力、法向力和滚动摩擦的主要影响因素,最后通过在zlc100长槽型振动光饰机中进行验证试验,工件深度为210mm时,加工效果最优。
For large workpiec or workpiece with special requirements in the horizontal vibration finisher,they need to be fixed by fixture which can ovoid collision between the workpieces and improve the machining efficiency.The workpiece must get free rotation on the fixture to ensure the machining uniformity.There existed big difference for buried depth of the workpiece, gravity of abrasive and the force from the collision of abrasive. Analysing the movement of horizontal vibration barrel finishing equipment ,the velocity of abrasive is calculated through simulating their movement in EDEM. Using orthogonal experiment analysis different buried depth and different rotation velocity of the workpiece, and analyzing the results through statistics method, it is concluded that buried depth of the workpiece mainly affects the tangential force ,normal force and rollingfriction. Finally the verification test shows that the machining effect is optimal when the buried depth is 210mm in the ZLC100 long groove vibrating finisher.
出处
《机械设计与制造》
北大核心
2017年第2期112-114,117,共4页
Machinery Design & Manufacture
