The invention relates to an assembling method for a lower tube and a battery of an electric bicycle and a lower tube five-way integrated structure, and the assembling method comprises the following steps: taking a round tube material, and blanking the round tube according to the size of a lower tube body of the electric bicycle; a pipe drawing machine and a matched mandrel penetrate into the blanked round pipe, and the thickness of the inner wall of the pipe fitting is changed through pushing and stretching; performing heat treatment on the pipe fitting, and softening the pipe fitting; forming the pipe fitting by using a forming die and a hydraulic forming device, forming a battery mounting cavity in the middle of the pipe fitting, and forming connecting cavities at two ends; a numerical control machine tool is used for machining a battery installation opening and an installation hole in one side wall of the battery installation cavity to form a lower pipe body; a battery sleeved with a battery protection sleeve is installed in the battery installation cavity through the battery installation opening and is in interference fit with the lower pipe body, the battery protection sleeve and the lower pipe body are fixedly installed through the cooperation of the fixing piece and the installation hole, welding is not needed, the technological process is simple and convenient, the overall structure is more simplified, and the appearance is smooth and attractive; the cost is reduced; and the productivity is improved.
本发明涉及一种电动自行车下管与电池的装配方法及下管五通一体结构,装配方法包括:取圆管材料,将圆管依据电动自行车下管本体的尺寸进行下料;用抽管机及配套的芯轴穿入下料后的圆管内,通过推挤拉伸改变管件内壁的厚度;对管件进行热处理,软化管件;使用成型模具及液压成型装置使管件成型,在管件中间形成电池安装腔,两端形成连接腔;用数控机床在电池安装腔的一侧壁加工电池安装口及安装孔,成为下管本体;将套有电池保护套的电池通过电池安装口装入电池安装腔内与下管本体过盈配合,并通过固定件与安装孔配合使电池保护套与下管本体安装固定,不需要进行焊接,工艺制程简便,整体结构更加简化,而且外观平顺美观,成本降低及产能提高。
Method for assembling lower tube and battery of electric bicycle and lower tube five-way integrated structure
一种电动自行车下管与电池的装配方法及下管五通一体结构
2023-06-27
Patent
Electronic Resource
Chinese
IPC: | B23P Sonstige Metallbearbeitung , OTHER WORKING OF METAL / B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL , Bearbeiten oder Verarbeiten von Blechen, Metallrohren, -stangen oder -profilen ohne wesentliches Abtragen des Werkstoffs / B62J Fahrrad- oder Motorradsättel oder -sitze , CYCLE SADDLES OR SEATS / B62K Fahrräder , CYCLES |
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