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震击式造型机是当前使用较广的造型设备,但它却是铸造车间的主要噪声源,所产生的噪声为机械撞击噪声,一般都具有很高的峰值及很短的持续时间,因此它比稳定噪声更容易使人的听觉及身心健康受到损害.对这类机械噪声控制的难点是:1.难于采取隔声手段将其与操作人员隔离;2.难于解决既需要利用振动来提高造型紧实度,又要大幅度地降低振动与噪声这样一对矛盾.本文旨在通过大量试验及理论分析基础上.着重对造型机主要声源及发声机理进行研究,尤其是对机械撞击噪声的主要成分——自鸣噪声的研究,提出了控制参与震击的构件(主要是工作台)自鸣噪声是从
Shock molding machine is currently widely used modeling equipment, but it is the casting plant’s main source of noise, the noise generated by mechanical impact noise, usually have a very high peak and short duration, so it More stable than the steady noise of people’s hearing and physical and mental health damage.This mechanical noise control difficulties are: 1. Difficult to adopt sound insulation means to be separated from the operator; 2. Difficult to solve both the need to use vibration to improve the shape Compactness, but also a substantial reduction in vibration and noise such a contradiction.This paper aims to pass a large number of experiments and theoretical analysis based on the focus on the molding machine main sound source and sound mechanism, especially for mechanical impact noise The main component - the study of self-muted noise, proposes to control the components involved in the shock (mainly the workbench)