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半径不大的扇形零件的圆弧部分,可以在立式铣床上用圆转盘来加工,但当扇形的半径太大时,用立铣加工就有困难。这里推荐的夹具,能在立铣上加工大型扇形零件。该夹具很简单,其结构如图所示;夹具的主要部分包括焊接而成的V形框架,固定在其上的枢轴以及带有调节螺母的连接杆。操作前先将枢轴与铣床主轴之间用连接杆相联,用螺絲压板把V形框架紧固在铣床工作台上(必须调节到使铣刀与枢轴中
The radius part of the fan-shaped parts arc can be used in the vertical milling machine with a turntable to process, but when the fan radius is too large, there are difficulties with the vertical milling. The fixture recommended here can process large sector parts on the end mill. The fixture is simple and its structure is shown in the figure. The main part of the fixture consists of a welded V-shaped frame, a pivot attached to it and a connecting rod with an adjusting nut. Before operation, connect the pivot shaft with the spindle of the milling machine with a connecting rod, and fasten the V frame to the milling table with a screw clamp (must be adjusted so that the milling cutter and the pivot