Supermachining methods for complex curved parts
Published on:
2023-04-25
Complex surfaces are generally combinations of surfaces with multiple curvatures that achieve certain mathematical characteristics and pursue functional and aesthetic appearance forms, including aspheric, free-form and shaped surfaces.
Complex surfaces have become an important working surface for many industrial products and parts such as aerospace, astronomy, navigation, automotive parts, moulds and biomedical implants. For example: aspheric optical parts can be well corrected for a variety of aberrations, to improve the ability to identify instruments; complex surface mirrors can reduce the number of reflections and power loss, referring to the stability; complex surface engine cylinder can improve the work efficiency; at the same time, some mould cavities, automotive parts are increasingly applied to complex surface shape, to achieve functional requirements and aesthetics. With the increase in demand for complex surface class parts and performance requirements continue to improve, the traditional processing methods have been difficult to meet the actual application needs, the urgent need to further improve the level of complex surface parts processing, in order to achieve super processing. Due to the variability of curvature of complex surfaces, the study of material removal mechanisms, sub-surface damage and other characteristics are important to improve machining accuracy and efficiency, and the contamination of machining residual waste has received widespread attention.
A review of the progress of complex surface supermachining methods is presented, reviewing the development of complex surface supermachining, explaining the principles and influencing factors of complex surface super-forming and super-polishing, comparing the elements of complex surface supermachining such as tool-to-workpiece surface fit, accuracy, surface damage and efficiency, and then making predictions and outlooks for complex surface supermachining methods.
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