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鹽城工學院本科生畢業(yè)設計說明書 2008
變速箱殼體組合機床的夾具設計
摘 要：變速箱殼體組合機床采用臥式雙面加工方案。用于鉆削被加工零件左側面上的8個?8.5的孔，1個?11.9的孔，右側6個?8.5的孔，2個?9.8的孔。主要包括總體設計和夾具設計兩個部分。左側主軸箱用來加工這9個孔，右側主軸箱用來完成剩下的8個孔的加工，兩主軸箱的中間是夾具部分。機床采用液壓滑臺實現(xiàn)刀具的進給，以保證進給速度的穩(wěn)定可靠。工件選用“一面兩孔”的定位方案，能夠保證工件的位置精度要求，同時便于工件裝夾，又有利于夾具的設計與制造。采用氣壓夾緊方式。為保證工件上被加工孔的位置精度，采用了導向裝置。因工件批量較大，導向裝置中的鉆套容易磨損，所以采用了可換鉆套。夾具體材料采用HT150,并在夾具體上開設排屑槽以防止切屑在定位元件工作表面上或其他裝置中堆積而影響工件的正確定位和夾具的正常工作。
關鍵詞：組合機床；總體設計；夾具
The fixture design of modular machine tool for transmission body based on 3D method
Abstract: The modular machine tool for transmission body uses the horizontal-type and two-side processing plan.It is used for drilling these holes in the work piece: eight holes with the diameter 8.5mm and depth 24mm, one hole with the diameter 11.9mm and depth 25mm on the left side,six diameter 8.5m holes and their bottom surfaces on the right surface, two diameter 9.8mm holes.The topic includes two parts, the general design and fixture design of the machine tool. The left spindle box is used for machining nine tappet holes, the right spindle box is used for machining eight holes, and a fixture is between two spindle boxes.To achieve stable and reliable feed, hydraulic pressure sliding tables are used in this machining tool.The work piece is located at the fixture through "a face two holes",which can ensure the position precision needs of the work piece and be beneficial to design the fixture.The combination machine is clamped by atmospheric pressure devices.To ensure position precision, the guiding devices are used. Replaceable guiding sleeves are chosen, because they are easy wearing in large quantities of production. The material of clamp body is HT150. Chip troughs which are in the clamp body are free of chip falling onto the working surface of positioning components or accumulating on other devices, and ensure the work piece correct positioning and the fixture normal working.
Key words: combination machine; design; fixture