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我厂加工一轮胎膜,材质为铸造铝合金,外径1300毫米、厚170毫米、壁厚最薄处25毫米,内壁及底面由三种不同半径(最大半径650毫米)的内球面及一段斜面、一段平面组成。由于形状复杂,切削时易振动,内球面加工质量达不到要求,为此,设计制造了车削大内球面工具。工具结构如图所示,根据杠杆原理和几何作图法而设计,即刀杆上某一点与内球面的球心重合并以此作为支点,取其刀杆长度为工件内球面半径,使
I plant a tire film, made of cast aluminum alloy material, diameter 1300 mm, thickness 170 mm, the thinnest wall thickness of 25 mm, the inner wall and the bottom by three different radius (maximum radius of 650 mm) of the inner sphere and a slope , A plane composition. Due to the complex shape, easy to vibrate when cutting, the processing quality of the inner spherical can not meet the requirements, therefore, the design and manufacture of large spherical turning tools. Tool structure shown in the figure, according to the principle of the lever and geometric drawing method and design, that is, a certain point on the arbor and spherical center of the spherical coincide with this as a fulcrum, whichever is the length of the arbor spherical radius of the workpiece