Small radius forming tool for large-diameter guide tube

Abstract

The invention discloses a small radius forming tool for a large-diameter guide tube. The small radius forming tool for the large-diameter guide tube comprises a bending mold and a clamping block, wherein the bending mold comprises a forming mold (1), a first clamping mold (2) and a second clamping mold (3). Both the first clamping mold (2) and the second clamping mold (3) are connected to the forming mold (1) to form an integrated structure; a first groove structure (4) is arranged on the outer surfaces of the forming mold (1), the first clamping mold (2) and the second clamping mold (3); and an auxiliary clamping mechanism (5) is fixedly connected to the upper side of the first clamping mold (2). The small radius forming tool for the large-diameter guide tube is used for numerically controlled brake forming of the guide tube, so that the machining efficiency and quality are improved; the deviation value between the formed guide tube and a theoretical shape is reduced to meet a specified value; a tubular product is not scrapped, the repair rate is zero, and the machining quality is greatly enhanced.

Description

technical field [0001] The invention relates to the technical field of structural design and application of forming tools, and in particular provides a small-radius forming tool for large-diameter conduits. Background technique [0002] At the present stage, the numerical control bending forming method applied to φ≥30mm catheters uses bending molds and clamping blocks to perform molding processing by clamping a straight segment of the catheter. When the bending radius is small, R≤1.5φ, during the forming process, because the clamping force generated by the bending mold and the clamping block on the catheter is less than the yield force of the catheter when it is formed, the position of the catheter will shift accordingly. During the forming process, the pipe wall and the edge of the clamp block are rubbed against each other, which is prone to scratches; the formed pipe also has a large deviation from the theoretical shape, which leads to an increase in the amount of pipe scr...

AI Technical Summary

Problems solved by technology

During the forming process, the pipe wall and the edge of the clamp block are rubbed against each other, which is prone to scratches; the formed pipe also has a large deviation from the theoretical shape, which leads to an increase in the amount of pipe scrapping, an increase in the repair rate, and poor quality of the forming process. lower

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