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由于在模型、砂箱工装尺寸大小对紧实效果的影响方面缺少系统研究,以及在如何选择紧方式和参数方面的介绍文献较少,因此就不可能评价和有效利用震击同时压实砂型的所有优越性。带缓冲的震击机构的特点是工作台振幅很小,具有低的冲击刚度,使运动部分相互冲击的频率增加到20赫芝,从而提高了型砂的流动性,加速了达到砂型所需要的紧实度的效率。因而这里着重研究有压实的震击在各种不同组合的情况下,力的作用延续时间对型砂紧实效果的影响。
Due to the lack of systematic research on the effects of the model and the size of the box tooling on the compaction effect and the limited literature on how to choose the compaction method and parameters, it is not possible to evaluate and effectively use shocks to compact sand molds All advantages. Buffered shock mechanism is characterized by a small table amplitude, low impact stiffness, the movement of the mutual impact of the frequency increased to 20 Hertz, thereby increasing the flow of sand, accelerated to reach the sand required tight Real efficiency. Therefore, here focused on the compaction of the shock in a variety of different combinations of circumstances, the role of force duration of the sand compacting effect.