A variable diameter joint spinning forming tool
By using an expandable split core mold and a dual-rotor synchronous drive mechanism, combined with induction heating, the problems of difficult demolding and uneven forming of traditional spinning tooling are solved, realizing efficient and precise spinning forming of variable diameter joints, which can meet the needs of multi-variety small-batch production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 江苏华熙电仪科技有限公司
- Filing Date
- 2026-05-29
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional spinning fixtures, after forming the reducing joint, have a strong clamping force between the core mold and the pipe, making demolding difficult. Furthermore, the single spinning wheel forming is unbalanced, resulting in low efficiency and poor forming quality. In particular, problems such as scratches, deformation, and eccentricity are prone to occur in reducing joints with large diameter ratios and thin walls.
By employing an expandable and retractable split mandrel and a dual-rotor synchronous drive mechanism, combined with induction heating, precise positioning, symmetrical spinning, and contactless demolding of the pipe fittings are achieved. The expansion and retraction of the expandable and retractable split mandrel, along with the dual-rotor balance of radial force, and the use of induction heating to reduce resistance to plastic deformation, the pipe fittings are positioned and retracted synchronously.
It improves demolding efficiency, avoids damage to the inner surface of pipe fittings, ensures molding accuracy and quality, is suitable for multi-variety small-batch production, and broadens the application range of materials.
Smart Images
Figure CN122400399A_ABST