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控制和降低噪音,是改善冲压车间劳动条件的重要一环,大致可以从下列诸方面进行: 1.冲制阶段采用逐渐冲切的方法,如斜刃冲裁和阶梯凸模冲孔。当斜刃高度为一个料厚时,可降低噪声5～10分贝。一切使冲裁容易进行的因素都可减低噪音,如凹模孔口采用斜口式、较大的冲裁间隙、热冲、限制凸模进入材料的深度等。在较精确的冲压和成形模中可放置减震垫,这一方面能减低噪声,同时有助于限制凸模行入材料的深度,提高模具寿命。
Control and noise reduction is an important part of improving the working conditions in the press shop. The following aspects can be basically achieved: 1. Gradual punching methods such as oblique edge blanking and stepped punch punching are used during the stamping stage. When the diagonal edge height of a material thickness, can reduce the noise 5 to 10 dB. All the blanking easy to carry factors can reduce the noise, such as the use of bevel die-mouth aperture, a larger blanking gap, thermal shock, limit punch into the depth of the material. In more precise stamping and forming die can be placed cushion, which on the one hand to reduce noise, while helping to limit the punch into the depth of the material, improve die life.