Tubular product bending internal pressing supporting device and tubular product bending method
A supporting device and pipe technology, applied in the field of mechanical processing, can solve the problems of increasing mandrel manufacturing and use costs, high mold design and manufacturing costs, and high possibility of pipe wrinkling, etc., to reduce scratches, use and maintenance costs The effect of reducing and suppressing the possibility of wrinkling
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[0041] Step 1: Customize a cylindrical rubber bag 1 according to the inner diameter of the pipe 10 (for example, the inner diameter is greater than or equal to 20 mm). There is a certain gap between the outer wall of the rubber bag 1 and the inner wall of the pipe 10, and the diameter of the rubber bag 1 is 2 mm to 3 mm smaller than the inner diameter of the pipe 10. The rubber bag 1 has a thickness of 3 mm to 5 mm, and the head of the rubber bag 1 is in the shape of a truncated cone, and the end face of the head is perforated to form a through hole 11 through the inner cavity of the rubber bag 1; the cone angle of the head of the rubber bag 1 is 10°- 30°, the height of the round platform is 20mm-50mm, the end face of the head is perforated, and the aperture is 5mm-50mm smaller than the diameter of the end face; in this embodiment, according to the inner diameter of the pipe 10 of 68mm, a cylindrical rubber bag 1 is customized, and the diameter of the rubber bag 1 is 66mm. The ...
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