Supporting arm positioning and machining assembly

The utility model discloses a supporting arm positioning and machining assembly which comprises a pressing piece, a clamping piece, a clamping piece, a clamping piece, a clamping piece, a clamping piece, a clamping piece, a clamping piece and a clamping piece, and the clamping piece comprises a moving table and a rotating shaft, and the rotating shaft is arranged on the top of the moving table and slidably connected with the moving table; the supporting arm comprises an arm body and a sleeve shell, and the sleeve shell is connected with the arm body in a clamped mode; the air cylinder is used for driving the moving table to move; and the supporting seat is connected with one end part of the supporting arm. The device can prevent the gas spring in the supporting plate from bouncing and hurting staff, is convenient and safe to operate, saves time and labor, is high in efficiency, and improves the assembly productivity of a production line. 本实用新型公开了一种支撑臂定位加工组件，包括：压紧件，包括运动台和旋转轴，所述旋转轴设置于所述运动台顶部且与所述运动台滑动连接；支撑臂，包括臂体