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2023智能制造与机械动力学学术大会

作者： Jian-wei Ma Guan-lin Li Hui-teng Yan Feng-ze Qin Jia-wei Li

slow tool servo turning is playing an increasingly important role in the ultra-precision manufacturing of complex curved ***,for free-form surface parts with complex geometric features,severe tool flank interference adds great difficulty to the *** this reason,a non-interference slow tool servo turning method of tool flank for complex surfaces with frequent concave and convex changes is *** calculating the tool clearance angle of the complex surface with frequent concave and convex changes,the machining area is divided according to the result,and the multiple toolpaths are generated in different areas by controlling the spindle of CNC lathe in forward and reverse *** using this new toolpath planning method for slow tool servo turning of complex surfaces with frequent concave and convex changes,the roughness can be reduced by 26.988% under the circumstances of ensuring higher tool life and better working condition,which can effectively improve the machining quality and surface integrity of complex curved parts.

关键词： Complex surfaces with frequent concave and convex changes slow tool servo tool clearance angle Interference of tool flank Non-interference toolpath

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Micro-optical fabrication by ultraprecision diamond machining and precision molding

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Frontiers of Mechanical Engineering 2017年第2期12卷 181-192页

作者： Likai LI Neil J. NAPLES Jeffrey W. ROBLEE Allen Y. YI Department of Integrated System Engineering The Ohio StateUniversity Columbus OH 43210 USA Nistica Inc. Bridgewater NJ 08807 USA Ametek Precitech Keene NH 03431 USA

Ultraprecision diamond machining and high volume molding for affordable high precision high performance optical elements are becoming a viable process in optical industry for low cost high quality microoptical component manufacturing. In this process, first high precision microoptical molds are fabricated using ultraprecision single point diamond machining followed by high volume production methods such as compression or injection molding. In the last two decades, there have been steady improvements in ultraprecision machine design and performance, particularly with the introduction of both slow tool and fast tool servo. Today optical molds, including freeform surfaces and microlens arrays, are routinely diamond machined to final finish without post machining polishing. For consumers, compression mold- ing or injection molding provide efficient and high quality optics at extremely low cost. In this paper, first ultrapreci- sion machine design and machining processes such as slow tool and fast too servo are described then both compression molding and injection molding of polymer optics are discussed. To implement precision optical manufacturing by molding, numerical modeling can be included in the future as a critical part of the manufacturing process to ensure high product quality.

关键词： ultraprecision machining slow tool servo fast tool servo compression molding injection molding,microlens arrays optical fabrication

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