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沖床減震器減振降噪聲的原因

發(fā)布時間：2019-03-11 15:36

關(guān)于懸掛系統(tǒng)的改裝過程中，硬的減震器要與硬的彈簧相搭配，而彈簧的硬度又與車重息息相關(guān)，因此較重的車一般采用較硬的減震器。與引震曲軸相接的裝置，用來抗衡曲軸的扭轉(zhuǎn)震動。沖床減震器的原理與此相似。
In the refitting process of the suspension system, the hard shock absorber should be matched with the hard spring, and the hardness of the spring is closely related to the weight of the car, so the heavier car generally USES a harder shock absorber.A device connected to a crankshaft to counter torsional vibration of the crankshaft.The principle of a punch shock absorber is similar.

沖床減震器

一、沖床振動噪聲產(chǎn)生的原因分析：
I. cause analysis of vibration and noise of punch:

沖床工作時產(chǎn)生振動的原因：轉(zhuǎn)動部分(電動機(jī)和飛輪)的不平衡力;曲軸連桿和沖頭組成的曲柄連桿機(jī)構(gòu)的不平衡擾力;沖頭與工作接觸時的沖擊力、沖壓過程完成瞬間由于力的釋放，曲軸及立柱的彈性收縮引起的振動力等。前幾種力的作用產(chǎn)生的振動不大，沖床振動主要是在下料完成的瞬間，沖頭與工件相互作用力突然消失后因曲軸和立柱形變狀態(tài)恢復(fù)到原狀態(tài)的回彈作用引起的。沖床的振動主要與沖床加工的壓力大小有關(guān)，壓力大由曲軸承受的剪應(yīng)力大，立柱的壓座力亦大，每次沖壓完時回彈力亦大，所以沖床沖壓噸位愈高，沖壓振動越強(qiáng)烈。
Causes of vibration in the working of the punch: unbalanced force of the rotating part (motor and flywheel);Unbalanced disturbing force of crank connecting rod mechanism composed of crankshaft connecting rod and punch;The impact force when the punch comes into contact with the work, the vibration force caused by the elastic shrinkage of the crankshaft and the column, etc.The vibration produced by the action of the previous several forces is not large. The vibration of the punch is mainly caused by the rebound effect of the crankshaft and the column deformation returning to the original state after the interaction force between the punch and the workpiece suddenly disappears at the moment of blanking.The vibration of the punch is mainly related to the size of the punch processing pressure, pressure by the crankshaft bears a large shear stress, the column pressure seat force is also large, each time when stamping elastic force is also large, so the punch tonnage is higher, stamping vibration is more intense.

松夏減震器

二、沖床減振降噪聲的使用標(biāo)準(zhǔn)：
Ii. Standards for vibration and noise reduction of punch machine:

環(huán)境質(zhì)量標(biāo)準(zhǔn)
Environmental quality standard

1、 GB10070-88《城市區(qū)域環(huán)境振動標(biāo)準(zhǔn)》(工業(yè)集中區(qū))，即晝間75dB(A)，夜間72 dB(A)。
1. Gb10070-88 environmental vibration standard for urban areas (industrial concentration area), i.e. 75dB(A) during the day and 72db (A) at night.

2、《城市區(qū)域環(huán)境噪聲標(biāo)準(zhǔn)》GB3096-93(3類)，晝間65dB(A)，夜間55dB(A)。
2. Environmental noise standards for urban areas gb3096-93 (class 3), 65dB(A) during the day, 55dB(A) at night.

3、沖床減震器的應(yīng)用非常廣泛，中央空調(diào)、汽車、風(fēng)機(jī)、水泵、發(fā)電機(jī)組等很多設(shè)備都有應(yīng)用到。
3, the shock absorber is widely used, central air conditioning, automotive, fans, pumps, generator sets and many other equipment have been used.

減震器