Device for modifying surface of micro part

Abstract

The invention provides a device for modifying the surface of a micro part. The device comprises a strengthening module, a roll-to-roll vibration sheet module, a water supply module and a laser module. The strengthening module comprises a shell and shots, a working cavity is formed in the shell, a movable vibration piece is installed in one end of the working cavity, a plurality of shots are evenly distributed on the vibration piece, and a workpiece to be strengthened is installed in the other end of the working cavity; the reel-to-reel vibration sheet module is used for driving a vibration sheet to move; the water supply module is used for forming a restraint layer on one side of the vibration sheet; the laser module is used for generating a laser beam, the laser beam penetrates through the restraint layer to impact the vibration piece, so that the vibration piece generates vibration and is used for providing kinetic energy for the projectile, and the projectile obtaining the kinetic energy is used for impacting a workpiece to be strengthened. High-energy nanosecond pulse laser is used for inducing shock waves to act on the vibration piece, the vibration piece drives the micro projectiles to continuously hammer the surfaces of the micro parts to achieve modification treatment, and the device is simple in structure and good in reliability.

Description

technical field [0001] The invention relates to the field of material surface modification, in particular to a device for modifying the surface of tiny parts. Background technique [0002] Micro-miniature mechanical products have great application prospects in the fields of biomedicine, aerospace, national defense and high-tech electronic products. Metal tiny parts in micro-miniature mechanical products, such as micro-gears and micro-switches as the main load-carrying parts, are usually subjected to alternating loads such as heat and force, which are prone to wear and fatigue damage, resulting in product failure. The development of the application of micro-mechanical products puts forward higher requirements on the surface quality, wear resistance and fatigue resistance of micro-structure parts. In addition, micro-miniature parts used in medicine often require surfaces to be cleaned, matted, matted, enhanced adhesion, deburred or textured, etc. [0003] The metal surface s...

AI Technical Summary

Problems solved by technology

However, the strengthening of the metal surface by strong plastic deformation requires the accumulation of plastic deformation on the surface, and the strengthened surface cannot form a dense strengthening layer.

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