Laser Structuring Brake Shoe Lining Carrier Edges

The patent replaces the mechanical sandblasting system with a laser-based system. Instead of using kinetic energy of sand particles to clean and roughen the surface, a laser beam is used to locally melt and evaporate material, creating a structured surface pattern. This substitution eliminates the harmful mechanical impacts that cause compression and deformation of the backing plate while achieving the desired surface preparation for adhesion.

The patent changes the energy delivery parameters from high-velocity particle impact (sandblasting) to controlled laser energy input. By adjusting laser parameters such as power, pulse duration, and scanning speed, the process achieves surface structuring without the excessive energy input that causes backing plate deformation. The laser parameters are optimized to remove contaminants and create adhesion-promoting structures while maintaining dimensional stability.

The laser-based system replaces mechanical sandblasting, eliminating the generation of sand dust. The laser process vaporizes contaminants and surface material directly, converting them into gas or fine vapor that dissipates without forming a dust layer. This substitution从根本上 eliminates the dust generation problem inherent in mechanical abrasion methods.

The patent converts the harmful effect of excessive cleaning (which generates dust) into a beneficial effect by using laser energy to completely vaporize contaminants rather than merely displacing them. The laser energy transforms the cleaning process from a mechanical redistribution of contaminants to a complete removal process, where contaminants are converted to gas and removed, leaving no dust residue.

The patent applies local quality by using the focused laser beam to create different surface structures in different areas. The laser can be programmed to apply different parameters (power, speed, pattern) to specific zones, creating optimized surface structures precisely where the friction lining will be attached, while leaving other areas unaffected or differently treated. This enables zone-specific surface preparation with high precision.

The patent segments the surface treatment process into distinct zones using laser scanning patterns. The joining surface area is treated with specific laser parameters to create optimal adhesion structures, while other areas of the pad carrier receive different treatment or no treatment. The laser beam is segmented in its action through programmed scanning paths that target specific regions with precision.

The patent optimizes laser parameters to control the depth and distribution of surface structuring. By adjusting pulse duration, power, and scanning speed, the process creates surface structures that promote adhesion without forming excessive bulges or deep indentations that could tear the adhesive layer. The parameters are tuned to achieve a balance between adhesion enhancement and structural integrity preservation.

The patent applies partial action by treating only the necessary areas with sufficient intensity to create adhesion structures, while avoiding excessive energy input that would create harmful bulges. The laser processing is controlled to provide just enough surface structuring to ensure adhesion without over-processing that would compromise the backing plate structure or create adhesive layer stress concentrators.