The function of horn mesh punching, common problems and solutions
Common problems and solutions of speaker mesh punching
Punching displacement: Because the anvil surface is not smooth, the two ends of the punching hole are deformed, and the roughness is unevenly heated, resulting in the deviation of the hole diameter. The correction method can be immersed in water: during operation, immerse the thin side of the hole wall in water to cool down, and then use a punch to enlarge the hole. Due to the high wall thickness and good plasticity, the wall thickness of the whole forging is uniform. This method can be used for materials with good plasticity.
The blank is deformed during the stamping process. That is, the metal under the punch press is pushed back and forth, the height of the blank decreases, the diameter increases, the upper end is concave, and the lower end is convex. The diameters D0, H0 and hole diameter d1 of the blank before punching are related to the degree of deformation. The smaller D0/d1, the more severe the deformation. The solution is to control the D0/d1 value ≥ 2.5~3. If the diameter of the hole is large, such as D0/dl<2.5, drill the hole first and then ream it to obtain the required hole diameter.
What is the function of speaker mesh punching?
The speaker nets currently on the market are generally dark brown, so the purpose of the design is to better avoid the melting of some original vulcanized rubber due to the sun's rays.
In addition, for speaker network audio, in some cases it is not a simple anti-fouling effect. This is actually very easy to understand. After all, the sound is produced by vibration, and the sound from the speaker to the middle layer of net outside the speaker will cause great damage to the sound.
For example, in a sound management studio, most of the speakers commonly used in audio do not have such a speaker network. For those of you who don't have too many rules about timbre, this might not be so bad. But for lovers who pursue sound perfection, the damage to the sound of this kind of speaker mesh is particularly significant under the condition of high sound pressure. The horn mesh can use metal sheet deep drawing punching machine, the punching machine has round holes, long round holes, round holes and so on. The raw materials for the production of horn nets generally include textile materials, metal materials, plastics, etc.
