A multi-field-assisted laser melting deposition composite additive manufacturing system, comprising a vacuum chamber atmosphere protection module, a laser melting deposition module, an ultrasonic shock peening module, a workpiece transfer module, an auxiliary thermal field induction heating module, a laser shock peening module, and an integrated control module, wherein
- the vacuum chamber atmosphere protection module comprises a bunker, a vacuum pump, a dust removal and filtering device, a transition chamber, and an inert gas replenishing device are provided outside the bunker and individually communicates with the interior of the bunker, the dust removal and filtering device is further connected to a circulating gas-washing device designed to wash the gas inside the bunker and reintroduce the washed gas into the bunker,
- the laser melting deposition module is arranged inside the bunker and comprises a deposition head, a translational movement device, a workpiece turntable, a laser, a powder feeding device, and a gas supply device, the translational movement device and the workpiece turntable are fixed within the bunker, the deposition head is positioned on the translational movement device, located above the workpiece turntable, and capable of performing a translational movement on the translational movement device, the laser, the powder feeding device and the gas supply device are all located outside the bunker, the laser is connected to the deposition head via an optical fiber, and the powder feeding device and the gas supply device are individually connected to the deposition head,
- the ultrasonic shock peening module comprises an ultrasonic shock gun and an ultrasonic generator, the ultrasonic shock gun is fixed on the deposition head, and processing ends of the deposition head and the ultrasonic shock gun face downward toward the workpiece turntable, the ultrasonic generator is located outside the bunker and communicates with the ultrasonic shock gun via an electrical signal,
- the workpiece transfer module is positioned on the workpiece turntable, and a base plate is affixed to the workpiece transfer module, the workpiece transfer module can move horizontally to transport a molded part to be processed into or out of the transition chamber,
- the auxiliary thermal field induction heating module is located on one side of the workpiece transfer module and is designed to heat the base plate and/or the molded part,
- the laser shock peening module is situated outside the bunker and is used for performing laser shock peening on a molded part processed by laser melting deposition within the bunker, and
- the vacuum chamber atmosphere protection module, the laser melting deposition module, the ultrasonic shock peening module, the workpiece transfer module, the auxiliary thermal field induction heating module, and the laser shock peening module are electrically connected to the integrated control module individually and are collaboratively controlled by the integrated control module.