Fractal spinning mold with crossed key and method for determining crossed key
A cross-shaped and mold technology, which is applied in the field of fractal spinning molds, can solve the problems of workpiece sliding, eccentricity, jamming, and affecting the normal spinning process.
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[0042] This embodiment is a fractal spinning die with cross-shaped keys used for fractal spinning of integral hubs. The hub fractal spinning die is used to form a hub with a mounting surface diameter of 120mm. In this embodiment, a circular LF21M aluminum alloy is used as the blank material, and the diameter of the blank is 200 mm, and the thickness of the blank is t 0 = 10mm; Since the diameter of the mounting surface of the formed hub is 120mm, the diameter d of the small end of the driving mandrel and the driven mandrel is both 120mm.
[0043]This embodiment includes a driving mandrel 1 and a driven mandrel 3 . The active mandrel 1 is a revolving body with an inverted trapezoidal longitudinal section, and the peripheral surface of the active mandrel 1 is the forming surface of the hub. In the center of the large end face of the active mandrel 1 there is a connecting rod fixedly connected to the machine tool spindle, and in the center of the small end face of the active ma...
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