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Multi-directional flexible loading integral forming device and method for special-shaped multi-way joints

A multi-pass joint, integral forming technology, applied in forging/pressing/hammer devices, metal processing equipment, forging presses, etc., can solve the problems of low mechanical properties, poor organizational uniformity, obvious texture tendency, etc.

Active Publication Date: 2021-07-06
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of difficult manufacture of special-shaped multi-way joints, poor structure uniformity, obvious texture tendency, and low mechanical properties, the present invention provides a multi-directional flexible loading forming device and method for integrally forming special-shaped multi-way joints

Method used

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  • Multi-directional flexible loading integral forming device and method for special-shaped multi-way joints
  • Multi-directional flexible loading integral forming device and method for special-shaped multi-way joints
  • Multi-directional flexible loading integral forming device and method for special-shaped multi-way joints

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] Special-shaped bottom bracket joints are designed, and the five joint channels are respectively at angles of 30°, 30°, 0°, 45°, and 45° to the horizontal direction, and are distributed radially; the lengths of the channels are 60mm, 60mm, 80mm, 40mm, and 40mm; The wall thicknesses are 3mm, 2mm, 2mm, 1mm, 1mm; the outer diameters are φ40mm, φ40mm, φ60mm, φ50mm, φ50mm.

[0090] Step 1: Process a cylindrical billet with a diameter of 100 mm and a height of 76 mm by using a 7075 aluminum alloy commercially extruded bar, and heat it to 400° C. for 10 minutes by induction heating.

[0091] Step 2, processing the pre-forging die. The open die forging scheme is adopted to process punches, dies and inserts, and the pre-forging top punch 21 and pre-forging bottom die 22 are used in the insert splicing process, so that the pre-forging top punch 21 and pre-forging bottom die 22 After closing, the shape of the internal cavity is similar to that of the special-shaped bottom bracket ...

Embodiment 2

[0100] Special-shaped bottom bracket joints are designed, and the five joint channels are respectively at angles of 30°, 15°, 15°, 60°, and 60° to the horizontal direction, and are distributed radially; the lengths of the channels are 50mm, 50mm, 70mm, 40mm, and 40mm; The wall thicknesses are 2mm, 2mm, 3mm, 2mm, 3mm; the outer diameters are φ40mm, φ40mm, φ60mm, φ50mm, φ50mm.

[0101] Step 1: A cylindrical billet with a diameter of 100 mm and a height of 81 mm is processed by using AZ31 magnesium alloy commercial extruded bars, and heated to 420° C. for 10 minutes by induction heating.

[0102] Step 2, processing the pre-forging die. The open die forging scheme is adopted to process punches, dies and inserts, and the pre-forging top punch 21 and pre-forging bottom die 22 are used in the insert splicing process, so that the pre-forging top punch 21 and pre-forging bottom die 22 After closing, the shape of the internal cavity is similar to that of the special-shaped bottom brack...

Embodiment 3

[0111] Design special-shaped tee joints, the three joint channels are at angles of 30°, 0°, and 45° to the horizontal direction; the channel lengths are 60mm, 80mm, and 40mm; the wall thicknesses are 3mm, 2mm, and 1mm; the outer diameters are φ40mm, φ60mm, φ50mm.

[0112] Step 1: Use TC4 titanium alloy to process a cylindrical blank with a diameter of 90mm and a height of 63mm, and heat it to 1000° C. for 10 minutes by induction heating.

[0113] Step 2, processing the pre-forging die. The open die forging scheme is adopted to process punches, dies and inserts, and the pre-forging top punch 21 and pre-forging bottom die 22 are used in the insert splicing process, so that the pre-forging top punch 21 and pre-forging bottom die 22 After closing, the shape of the internal cavity is similar to the shape of the special-shaped tee joint. It is required that the blank can be used to forge the base part of the special-shaped tee joint and the subsequent protruding part for forming ea...

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Abstract

A multi-directional flexible loading integral forming device and method for a special-shaped multi-way joint, which realizes the integral forging and forming of the special-shaped multi-way joint through the pre-forging process and the final forging process, and forges the heated blank into the main part of the multi-way joint through the pre-forging process And the part used to load and form the multi-way joint during the final forging process; then transfer the pre-forging to the final forging die, and only expose the part used to form the walls of the special-shaped joints in each channel; use multiple sets of toggle transmission mechanisms to The movement of the press template is transformed into the movement of each punch along the axial direction of each pipe of the special-shaped multi-way joint, so that multiple punches can be loaded in all directions to realize the overall forging of the special-shaped multi-way joint pipe. By adjusting the connection position of the toggle mechanism and the fixed seat and the shape and size of the punch, the flexible forging of special-shaped multi-way joints with different target shapes and sizes can be realized.

Description

technical field [0001] The invention relates to a device and method for integral forming of joints, in particular to a device and method for integral forming of multi-directional flexible loading of special-shaped multi-way joints. Background technique [0002] In many industrial fields such as automobiles, energy, nuclear power, aerospace, etc., special-shaped multi-way joints are widely used as high-pressure gas or liquid flow pipe joints or frame structure adapters. Its service environment is often harsh, so it has high requirements for its mechanical properties. Although casting is easy to manufacture special-shaped multi-way joints with complex shapes, the microstructure of the components is coarse and the mechanical properties are low; bulging technology is widely used in the production of multi-way pipe fittings and joints, but during the bulging process, the tube billet Under radial tensile stress, there are obvious fibrous structures and obvious texture tendencies ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/02B21J13/02B21J9/02B21K1/16
CPCB21J5/02B21J9/022B21J13/02B21K1/16
Inventor 陈刚王博常旭升张鸿名韩飞
Owner HARBIN INST OF TECH AT WEIHAI
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