Abstract:By analyzing sheet metal blanking process and buffer technology of hydraulic press, several kinds of blankingbuffering device were designed based on adaptive working conditions. At the same time, a buffer device with accuratelyadjusted buffer point position and automatically tracking blanking force was developed, so vibration and noise could be reduced, and it was successfully used in the blanking hydraulic press. Meantime, the structure of different devices and application status were analyzed, which had directive significance for practical production.