A small-sized polytetrafluoroethylene part numerical control milling processing method

By using an embedded machining method with multi-part layout and vacuum suction cup clamping, the high mold cost and machining difficulties of polytetrafluoroethylene parts in small-batch production have been solved, achieving efficient and stable parts machining and low-cost production.

CN122400627APending Publication Date: 2026-07-17GUIZHOU AEROSPACE ELECTRONICS TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUIZHOU AEROSPACE ELECTRONICS TECH CO LTD
Filing Date
2026-04-30
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

When developing, prototyping, or producing polytetrafluoroethylene (PTFE) parts in small batches, there are problems such as high mold costs, poor flexibility, difficulty in clamping during machining, difficulty in controlling precision, and poor dimensional stability.

Method used

The blank is cut using a multi-part layout method, combined with vacuum suction cup adsorption clamping and embedded processing. The blank is fixed by vacuum adsorption, and a solid connecting layer is retained during the processing. Finally, the connecting layer is removed to achieve the separation of the part from the blank.

Benefits of technology

It enables efficient machining of polytetrafluoroethylene (PTFE) parts, with convenient clamping, stable machining accuracy and surface quality, good dimensional consistency, high production efficiency, low cost, and short processing cycle.

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Abstract

本发明涉及机械加工技术领域,公开了一种小型聚四氟乙烯零件数控铣削加工方法,包括以下步骤:S1,按照多件排版方式对聚四氟乙烯板材进行下料,获得设定尺寸的毛坯;S2,对毛坯进行基准面铣削加工,形成定位用平面与侧面;S3,采用带密封圈的真空吸盘对毛坯进行真空吸附装夹,并辅以压板压紧。本发明解决了在研制、试制或小批量生产时模具成本高、灵活性差以及机械切削加工不易装夹、精度难以控制、尺寸稳定性较差的技术问题,通过多件嵌入式加工、真空吸盘吸附装夹,零件加工精度和表面质量稳定可靠,尺寸一致性好,而且装夹便捷,生产效率高,加工周期短,生产成本低。
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