Forming method of roll-shear formed general metal vascular stent
A vascular stent and metal tube technology, applied in stents, medical science, prostheses, etc., can solve the problems of high processing cost, low processing efficiency, high residual stress of vascular stents, and achieve strong universal mold, low cost, and overcome residual stress. The effect of thermal stress
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specific Embodiment approach 1
[0034] Specific embodiment one: combine Figure 1-Figure 4 Illustrate, the forming method of a kind of rolling shear forming universal metal vascular stent of the present embodiment is carried out according to the following steps:
[0035] Step 1. Assemble the upper die 2 with a patterned protrusion 7 on the upper and lower fixed, horizontally movable working platform 1;
[0036] Step 2, putting a section of seamless thin-walled metal pipe 5 to be formed on the round bar roller mold 4;
[0037] Step 3, placing the round bar roll die of step 2 on the horizontal fixed working platform 3 with a working groove;
[0038] Step 4. Quickly push the movable working platform 1 to drive the upper mold 2 to move in translation;
[0039] Step 5: Apply a vertical upward force on the horizontally fixed working platform 3, so that a pressing force will be generated between the upper die 2 and the roller die 4 covered with the seamless thin-walled metal pipe 5, and along with the convex patt...
specific Embodiment approach 2
[0046] Specific embodiment two: combine Figure 6 ~ Figure 7 It is explained that the different convex patterns of the flat lower mold 1 of this embodiment are sheared and formed on the thin-walled cylinder, which has little influence on the forming quality and forming effect of the stent.
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