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鹽城工學院本科生畢業(yè)設計說明書 2008
包縫機機體鉆孔組合機床總體及夾具設計
摘要：本設計課題來源于鹽城市江淮動力集團。為了提高加工精度和生產(chǎn)效率，需要設計一種組合機床來改善加工情況。本組合機床是針對工件左面上鉆4個φ5、4個φ4.2、3個φ3.3深度不一的11個孔和右面1鉆φ3.3深度不一的9個孔而設計的。該設計的內容重點是總體設計和夾具設計兩方面。在加工工藝路線方案中,確定裝料高度,確定加工線各系列機床的基本類型及機床配置形式,確定機床部件型號及機床夾具,完成了“三圖一卡”的繪制及夾具的設計?！叭龍D一卡”主要根據(jù)自己計算切削力，切削轉矩等選擇相應的機床部件。而夾具設計，用 “一面兩孔”定位方案消除工件的六個自由度，使工件獲得穩(wěn)定可靠的定位。工件夾緊裝置則選用結構簡單、可靠、方便的螺旋夾緊裝置，使夾緊平穩(wěn)可靠。該機床滿足設計的要求。
關鍵詞：組合機床；夾具；
The Overall and Fixture Design of Modular Machine Tool for Drilling Holes of BAO Sewing Machine
Abstract: The design project is from Jiangdong Group, Yancheng. In order to improve the accuracy and efficiency, it is necessary to design a modular machine tool. The machine tool is designed for the synchronous processing of four φ5 holes, four φ4.2 holes, three φ3.3 left holes of varying depth of 11 holes , and nineφ3.3 right holes of verying depth . The design is mainly focused on both the overall design and jig design. In the processing line programe ,We must establish a high degree of putting the workpiece and identify the basic types of machine tools and the configuration types of machine tools , we are also determine the kinds of parts and fixture , Meanwhile the drawing of “Three Charts and One Card” (automatic drawing process chart, size relation chart, machining schematic diagram and production calculating card) and fixture design are completed. “Three Charts and One Card” are based mainly on its own calculation of cutting force ,cutting torque and other machine tool parts .As far as jigs are concered, with the aid of one platform and two bore according to the principle of six points positioning to eliminate the six degrees of freedom of workpiece for a stable and reliable positioning, and the synchronous processing of two surfaces of parts which can simplifying the process. Simple, reliable and convenient spiral grip devices are employed for a stable and reliable grip. The Modular Machine Tool can satisfy for the requirements of the design .
Key Words: Modular machine tool; Fixture;