Manufacturing device and process of one-stroke drawn high square box-shaped pieces for titanium alloy sheets
A technology for single-stroke, box-shaped parts, applied in the direction of manufacturing tools, metal processing equipment, applications, etc., to achieve the effects of reducing tensile force, eliminating blank holders, and reducing stress-strain values of dangerous sections
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[0020] In this embodiment, TA1 industrial pure titanium plate is used to draw into a square box-shaped part: the side length is 45mm, the height is 50mm, and it is cut into a round blank by ordinary punching machine. Select a hydraulic press with a nominal force of 50MN and a hydraulic press with a slider speed of 50mm / s. The friction coefficient of material contact boundary and mold adopts μ=0.15. According to the recommendation of the current die design manual, the total drawing coefficient m=0.52 and the relative thickness of the blank (s / D)×100=1.36.
[0021] Such as figure 1 As shown, the tapered die 3 of this embodiment includes a two-stage structure of an upper part and a lower part, wherein: the upper part includes: a first taper 30, a second taper 32 intersecting with it, and a A smooth transition section 31 with a sufficiently large radius between the second taper and the second taper, and the lower part is a rectangular hollow column structure 33 .
[0022] In t...
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