High-frequency radial forging operation machine chuck axial buffering system and control method

Abstract

This invention discloses an axial buffering system and control method for a high-frequency radial forging manipulator chuck. The system includes: multiple symmetrically arranged buffer plunger cylinders, a hydraulic power unit (including a variable pump and a safety valve), a pressure control unit composed of an electro-hydraulic servo valve and a cartridge-type pressure relief valve, an adjustable-volume rigid liquid tank, and a pressure-displacement feedback sensor. The control method includes two modes: in single-machine operation, compressed oil buffering control is implemented, maintaining a hydraulic spring effect through closed-loop pressure; in dual-machine operation, pressure relief-pressure boosting control is implemented, actively relieving pressure to absorb displacement during the buffering phase, and driving hydraulic reset according to a linear function decaying signal during the reset phase. This invention solves the problems of traditional radial forging manipulator mechanical leaf spring-type axial buffering mechanisms, which require frequent replacement of leaf springs when changing buffering stiffness, and the buffering process involves significant impact vibration, resulting in long chuck reset time, short buffering mechanism life, and low feeding accuracy and efficiency.

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