Structure Optimization Of The Φ450mm Large Double-feed Honing Head

With the growth of Chinese economy, the demand for large diesel engine cylinder line will further increase. Honing machine tool, as the key equipment of machining diesel engine cylinder line, inevitably has a higher demand. This demands not only the quantity of machine tool, but also the performance of processing quality. As honing machine tool, the machining quality of honing head has an important influence on honing machine working performance. In various factors that affect honing head working performance, the stiffness is the largest one. Therefore, to improve its stiffness becomes the important way to improve the grinding efficiency and processing precision.The thesis based on Φ450mm double-feed honing head, established the equation on the basis of coarse honing part stress analysis, and identified the correlation of different parameters on the stress transfer process in its structure. The 3D model was build using finite element analysis software to analyze the correlation that the parts and its contact stiffness to the overall stiffness.Analysis results show that big push rod and vertebral body contact part exist the structure stiffness deficiencies problem owing to interface is too small. We redesign the structure, and get the optimal results of every parameter through parameters optimization method. According to the correlation of force-transfer and vertebral angle, we can get the applicable result. The contact part between big vertebral body and coarse honing stone seat rod was analyzed and optimized to get the best parameter of circular fillet. The analysis results of coarse honing seat support structure show that four rod support structure exist an optimal distribution, which can effectively improve the problem of honing stone seat deformation without changing the number of support rod.Comparing the analysis results before and after optimization show that optimized the big push rod can reduce 16.7% deformation in axis direction and rearranged the coarse honing stone seat rod can reduce 20% deformation of honing seat. Confirmed optimizing contact parts can effectively improve the stiffness of the honing head.