A theoretical and experimental study on the pulsed laser dressing of bronze-bonded diamond grinding wheels

• Published in: Applied surface science Vol. 314; pp. 78 - 89
• Main Authors: Deng, H., Chen, G.Y., Zhou, C., Zhou, X.C., He, J., Zhang, Y.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 30.09.2014; Elsevier
• Subjects: BONDS; BRONZES; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; CUTTING; Diamond grinding wheel; Diamond machining; DIAMONDS; Dressing; Exact sciences and technology; Grains; GRINDING; Grinding wheels; Laser radial sharpening; Laser tangential profiling; LASERS; MACHINING; PARAMETERS; Physics; Process parameters; Pulsed laser ablation; Pulsed lasers; Topography; Wheel dressing; Laser tangential profiling; Laser radial sharpening; Pulsed laser ablation; Topography; Diamond grinding wheel; Diamonds; Theoretical study; Surface topography; Experimental study; Pulsed lasers; Grinding; Film growth; Laser ablation technique; Bronze type compound
• ISSN: 0169-4332
• DOI: 10.1016/j.apsusc.2014.06.094

•The mechanisms for laser profiling and sharpening were theoretically analyzed.•The key processing parameters that influence laser dressing were proposed.•Pulsed laser ablation and laser profiling and sharpening experiments were conducted.•The effects of key parameters on the dressing results were summarized, and the optimal values were identified. A series of theoretical analyses and experimental investigations were performed to examine a pulsed fiber-laser tangential profiling and radial sharpening technique for bronze-bonded diamond grinding wheels. The mechanisms for the pulsed laser tangential profiling and radial sharpening of grinding wheels were theoretically analyzed, and the four key processing parameters that determine the quality, accuracy, and efficiency of pulsed laser dressing, namely, the laser power density, laser spot overlap ratio, laser scanning track line overlap ratio, and number of laser scanning cycles, were proposed. Further, by utilizing cylindrical bronze wheels (without diamond grains) and bronze-bonded diamond grinding wheels as the experimental subjects, the effects of these four processing parameters on the removal efficiency and the surface smoothness of the bond material after pulsed laser ablation, as well as the effects on the contour accuracy of the grinding wheels, the protrusion height of the diamond grains, the sharpness of the grain cutting edges, and the graphitization degree of the diamond grains after pulsed laser dressing, were explored. The optimal values of the four key processing parameters were identified.