Galvanometer system correction device and correction method thereof

Abstract

The invention provides a galvanometer system correction device and a correction method thereof, and relates to the technical field of precision laser processing equipment. A honeycomb panel is arranged in the middle of the outer frame of a bearing platform, a base plate for corrective is absorbed on the honeycomb panel, and the vacuum chamber of the honeycomb panel is connected with a dust collector; a PSD sensor for measuring the actual output light spot center position of the laser of a galvanometer system is arranged on the vacuum absorption bearing platform; a CCD image acquisition device is arranged above the base plate for correcting, and then is provided with a light intensity regulating module and an image acquisition board card; and a visual measurement algorithm module is arranged. The invention can effectively inhibit the precision drift of the galvanometer system, improve the efficiency of the galvanometer system when in correction model updating and in real-time correction calculation operation, improve the automatic degree of equipment, reduce the labor intensity of an operator, greatly improve the processing precision of equipment, product quality and production efficiency, has simple structure and unique principle and method, and is particularly suitable for precision laser processing equipment to use.

Description

technical field [0001] The invention relates to the technical field of laser precision processing equipment, in particular to a correction device for a vibrating mirror system in laser precision processing equipment. Background technique [0002] At present, laser processing (including laser marking, drilling and cutting, etc.) technology has been widely used in the fields of semiconductor chips, microelectronic circuits and hybrid integrated circuit packaging. Due to the small inertia, extremely fast acceleration and deceleration, and the processing speed can be as high as 12m / s, the galvanometer system is usually integrated into the laser processing equipment as a core component. However, the ever-changing high-density packaging and high-density interconnection technology (HDI) also put forward higher requirements for the accuracy of the whole machine (the accuracy of the whole machine is better than ±15um). Often, the introduction of a galvo system introduces various err...

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Problems solved by technology

[0004] The object of the present invention is to provide a vibrating mirror system calibration device and its calibration method, aiming to solve the problem of low efficiency of the existing vibrating mirror system correction. By using the present invention, the precision drift of the vibrating mirror system can be effectively suppressed, and the accuracy of the vibrating mirror system can be improved. The efficiency of the correction model update and the efficiency of real-time correction calculation operation can improve the degree of equipment automation, reduce the labor intensity of the operator, and greatly improve the processing accuracy, product quality and production efficiency of the equipment; its structure is simple, its principle and method are unique

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