Thermal around-bending forming device for titanium alloy thin-wall full-circle part

Abstract

The invention discloses a thermal around-bending forming device for a titanium alloy thin-wall circle part. The device comprises a die, a side pressing device, a clamp unit, a self-resistance heating unit, a rotary workbench and a heat preservation box, an annular female die used for containing a thin-wall workpiece is arranged on the die, and the side pressing device is arranged on the same horizontal plane as the annular female die of the die in a sliding manner. One part of the clamp unit is arranged on the die, and the other part of the clamp unit is slidably arranged on the same horizontal plane as the annular female die of the die; one electrode of the self-resistance heating unit is connected to the part of the clamp unit on the die, and the other electrode of the self-resistance heating unit is connected to the slidable part of the clamp unit; and the heat preservation box is arranged on the rotary workbench. A large-curvature whole-circle titanium alloy thin-wall profile can be machined through the device, one-time forming can be achieved, the original technological process is simplified, the production cost is greatly saved, and the machining efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of metal thermal processing, and in particular relates to a hot winding forming device for titanium alloy thin-walled round parts. Background technique [0002] Bending refers to the process of pressing the profile with a side pressing wheel or a side pressing block and gradually bending it around the bending die. The bending and forming of the profile is realized under the joint action of the blocks. In order to overcome the disadvantage that titanium alloys are difficult to form at room temperature, so that titanium alloys can be formed into workpieces with high precision under control. The hot bending process is to use a heating device to heat the workpiece to reduce the tensile strength of the workpiece before bending it. [0003] After the inventors searched domestic and foreign technical documents, it was found that at present there is only a hot stretch bending forming device, but no hot winding for...

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Problems solved by technology

[0005] In summary, the existing technology mainly has the following deficiencies: the induction heating stretch bending device cannot form large-sized full-circular workpieces; for forming two-dimensional shape parts, the process is complicated, the production efficiency is low, and large-sized full-circular workpieces cannot be formed. ;Due to the technical characteristics of stretch bending itself, only workpieces with a maximum bending angle of 220° can be formed. For parts that are formed over 220°, such as full-circle parts, they cannot be formed at one time, resulting in a certain degree of integrity in the production of workpieces. defect

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