Abstract
The grinding wheel topography influences the cutting performance and thus the economic efficiency of a grinding process. In contrary to conventional grinding wheels, super abrasive grinding wheels should undergo an additional sharpening process after the initial profiling process to obtain a suitable microstructure of the grinding wheel. Due to the lack of scientific knowledge, the sharpening process is mostly performed manually in industrial practice. A CNC-controlled sharpening process can not only improve the reproducibility of grinding processes but also decrease the secondary processing time and thereby increase the economic efficiency significantly. To optimize the sharpening process, experimental investigations were carried out to identify the significant sharpening parameters influencing the grinding wheel topography. The sharpening block width lSb, the grain size of the sharpening block dkSb and the area-related material removal in sharpening V’’Sb were identified as the most significant parameters. Additional experiments were performed to further quantify the influence of the significant sharpening parameters. Based on that, a process model was developed to predict the required sharpening parameters for certain target topographies. By using the process model, constant work results and improved process reliability can be obtained.
Highlights
The increasing demand for productive grinding processes that meet economic and quality standards leads to the constant development of grinding tools and associated dressing tools [1]
The p-values of the investigated sharpening parameters were clearly above the significance level, so it can be assumed that the investigated parameters have no significant influence on the reduced peak height Spk of the grinding wheel with the grain size D33
The differences in the results are due to the grinding wheel specification, in this case sharpening parameters lead to an over-sharpened grinding wheel D33, and a change in the parameters has no significant influence on the topography characteristic Spk
Summary
The increasing demand for productive grinding processes that meet economic and quality standards leads to the constant development of grinding tools and associated dressing tools [1]. Found that the microgeometry a grinding can be JACOBS [8] analyzed the He automated sharpening process withofceramicandwheel resin-bonded influenced by the parameters sharpening block width l and material removal. The grain break-out mechanics of resin-bonded grinding wheels asharpened model forwith the sharpening process to studied adjust the protrusion. He developed a model sharpening process of ceramic-bonded grinding wheels was studied by S TUFF [10]. He for the sharpening process to adjust the desired CBN grain protrusion. Based on the experimental results, an empirical regression model was developed
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