Self-adaptive stroke electromagnetic drive surface micro-forging device and its application

Abstract

An adaptive stroke type electromagnetically driven surface micro-forging device and its application, including: a frame and a magnetic field generator and a mover disposed therein, the mover includes a mover coil, a guide shaft, and an impact head, and the magnetic field generator includes The yoke and the permanent magnet inside it, wherein: the two ends of the mover coil apply a constant voltage in a static state and generate an ampere force on the mover to keep it in the initial position; when the two ends of the mover coil apply a band When there is a sinusoidal alternating voltage with a DC bias, the ampere force causes the mover to reciprocate and impact the workpiece without contacting the upper limit in the frame. When the stroke changes, the vibration state of the device does not change when it is stable, which reduces the positioning accuracy requirements of the motion unit. By setting multiple impact structures, it can simultaneously impact the processed surface with the same frequency and intensity, which significantly improves the processing efficiency. .

Description

technical field [0001] The invention relates to a technology in the field of surface treatment, in particular to an adaptive stroke electromagnetic surface micro-forging device and its application. Background technique [0002] As a new type of surface treatment technology, the surface micro-forging technology has good controllability in the movement of the impact structure compared with similar technologies such as shot peening, and can achieve uniform and equal-strength impact on the surface to be machined. The document "Friedrich Bleicher, Christoph Lechner, et al. Mechanism of surface modification using machine hammer peening technology[J]. CIRP Annals, 2012, 61(1): 375-378" introduced an electromagnetic micro-forging device, which relies on The return spring keeps it in the initial position, which increases the complexity of the device structure; when working, the mover vibrates back and forth between the upper position and the workpiece, which has a certain impact on t...

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Problems solved by technology

The literature "Friedrich Bleicher, Christoph Lechner, et al. Mechanism of surface modification using machine hammer peening technology [J]. CIRP Annals, 2012, 61 (1): 375-378" introduces an electromagnetic micro-forging device, which relies on The return spring keeps it at the initial position, which increases the complexity of the device structure; when working, the mover vibrates back and forth between the upper limit and the workpiece, which produces a certain impact on the motion unit; the stroke needs to be set, and during the processing Keep the same to ensure the uniformity of the impact strength, and in order to increase the impact frequency, it is generally necessary to select a smaller stroke, which has higher requirements for the positioning accuracy of the motion unit; at the same time, the device is generally equipped with a micro forging device for each motion unit Work, the processing efficiency is low, and it takes a long time to process the surface of large-sized parts

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