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電磁控制的隨焊錘擊系統(tǒng)設(shè)計與試驗
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    摘要:

    針對目前隨焊錘擊控制焊接應(yīng)力變形時，錘擊力和錘擊頻率不能準確調(diào)節(jié)的問題，設(shè)計了基于電磁控制的隨焊錘擊系統(tǒng)，為了使錘擊力和錘擊頻率準確可調(diào)，采用恒頻脈寬調(diào)制技術(shù)設(shè)計了錘擊力、錘擊頻率的控制電路。系統(tǒng)錘擊力調(diào)節(jié)范圍：0～1 000 N，錘擊頻率調(diào)節(jié)范圍：0～25 Hz。裝機試驗表明：錘擊力700 N、錘擊頻率2 Hz時，試件焊縫橫向、縱向殘余應(yīng)力與未錘擊時相比分別平均下降了

    Abstract:

    90%。Welding with trailing peening (WWTP) currently has a problem that the peening force and the peening frequency can not be accurately adjusted for effectively controlling the welding stress and distortion. In order to solve this problem, a new WWTP system was developed based on the electromagnetism control technique. This system applied the technology of constant frequency pulse width modulation (PWM) to design the control circuit. The peening force was adjusted between 0 and 1 000 N, and the peening frequency ranged from 0 to 25 Hz. The experimental results showed that the transverse and longitudinal residual stresses were decreased by 90% on average respectively when the peening force was 700 N and the peening frequency was 2 Hz, compared with the traditional welding system without trailing peening. 

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趙建國,樊云飛,馬躍進,郝建軍,趙曉順,申玉增.電磁控制的隨焊錘擊系統(tǒng)設(shè)計與試驗[J].農(nóng)業(yè)機械學報,2008,39(3):163-167.[J]. Transactions of the Chinese Society for Agricultural Machinery,2008,39(3):163-167.

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