Precise extrusion molding method of thin wall long-pipe shaped parts bland and special mould
A technology of extrusion forming and long tubes, applied in the direction of metal extrusion dies, etc., can solve the problems of large machining volume, expensive parts, low utilization rate of finished materials, etc., and meet the requirements of reducing extrusion force and punch length , Dimensional accuracy and material utilization are improved, and the effect of reducing the cost of production equipment
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[0014] The embodiments of the present invention are given in conjunction with the drawings:
[0015] Such as figure 1 As shown, the concave mold 8 is a cone with a through hole in the upper narrow and lower width. The inner diameter of the through hole matches the diameter of the solid cylindrical blank 17, which is embedded in the inner cone cavity of the pretension ring 3 and fixed The first-order punch 7 is a solid shaft with a stepped round platform at the upper end, and the outer diameter is matched with the inner diameter of the first-order extruded tube blank 19 to be formed; the first-order punch 7 is embedded in the convex through its upper end stepped round platform The mold fixing plate 2 is fixed in the step round hole and the convex mold fixing plate 2 is connected to the hydraulic press lifting beam through the backing plate 1, the upper template 6; the lower part is a concave mold structure: the mold base of the concave mold 8 includes: The pre-tightening ring 3, t...
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