Laser processing device and method for groove grinding wheel with U-shaped section profile

Abstract

The invention provides a laser machining device and method for a groove grinding wheel with a U-shaped section contour, the required device comprises ultrafast laser machining equipment, a rotating motor, a grinding wheel and a fixing clamp, the machining method comprises the steps that parallel scanning laser is gradually biased to the right side from the left side of a groove, and the distance between two adjacent scanning paths is L; then returning to the left side of the groove, wherein the distance between two adjacent scanning straight lines is L; the distance between the laser scanning arrays from left to right and the distance between the laser scanning arrays from right to left are L / 2. After a certain scanning cycle, a groove is machined; the rotating motor drives the grinding wheel to rotate by a certain angle, and the next groove is machined repeatedly. According to the laser reciprocating scanning machining method, the influence of the laser damage cumulative effect on single-side inclination of the groove contour can be restrained, so that the groove structure with the U-shaped contour is obtained, and the grinding stability of the groove grinding wheel is improved.

Description

technical field [0001] The invention relates to the technical field of laser processing, in particular to a laser processing device and method for a grooved grinding wheel with a U-shaped cross-sectional profile. Background technique [0002] Grinding is a processing method that uses abrasives to remove workpiece material to obtain good dimensional accuracy and surface accuracy. The abrasive grains of the grinding wheel mostly have a negative rake angle, the grinding force is large, and a large amount of heat will be generated during the grinding process. The amount of material removed during the grinding process is small, and the chips only take away a small part of the grinding heat, and most of the heat is transferred to the workpiece, resulting in an increase in the temperature of the workpiece. When the temperature in the grinding area is too high, it will cause grinding burns of the workpiece, which may form residual tensile stress. When the residual tensile stress is...

AI Technical Summary

Problems solved by technology

However, due to the cumulative effect of laser damage, the depth of the trench increases gradually along the width of the trench, forming sloped sidewalls.

During the grinding process, with the wear of the grinding wheel, the width of the groove with inclined side walls decreases rapidly, and the area ratio of the groove decreases accordingly, which reduces the cooling effect of grinding

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