Aluminum alloy split V-shaped thrust rod and preparation method and hot riveting assembly method thereof

A technology of aluminum alloy and thrust rod, which is applied in metal processing equipment, forging/pressing/hammer devices, forging presses, etc., can solve the problems of heavy thrust rod weight and poor lightweight effect, and achieve high degree of automation and high yield , high performance effect

Inactive Publication Date: 2019-01-25

北京航大新材科技有限公司

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AI-Extracted Technical Summary

Problems solved by technology

[0005] In view of the problem that the existing steel thrust rod has a large weight and poor lightening effect, the purp...

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Abstract

The invention discloses an aluminum alloy split V-shaped thrust rod, wherein the material of the thrust rod is aluminum alloy, and the preferred composition is Al- Cu-based alloy, Al- Si-based alloys,Al- Mg- Si-based alloys, Al- Zn- Mg- Cu-based alloy or Al- Mg-based alloys, and aluminum alloys in which trace alloying elements such as Sr, La, Ce, Y, Sc, Er, Nb, B, and Cr are added to the aluminum-based alloys. An aluminum alloy split V-shaped thrust rod is composed of a casing, a ball head and a ball hinge, wherein the V-shaped ball head and the ball heads at both ends are connected by a casing, and the ball hinge is arranged in a through hole of the ball head; the neck of the spherical head is a combination of an elliptical shape and an arc shape, which improves the bearing capacity. Thealuminum alloy thrust rod sleeve and ball head are manufactured by hot extrusion and/or forging. An aluminum alloy sleeve and a ball head are integrally hot-riveted and assembled to obtain the thrustrod, and the weight reduction effect can reach 40-70%.

Application Domain

Forging press detailsPivoted suspension arms

Technology Topic

Alloy elementAluminium alloy +2

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Examples

Experimental program(2)
Effect test(1)

Example Embodiment

[0124] Example 1

Example Embodiment

[0125] The components of the thrust rod in the first embodiment are:

[0126] Element

[0127] The total length of casing 1 L 1 =810mm, the inner radius r of casing 1 1A =30mm; the maximum outer radius r of the bellows section of A ball head 2A 2A1 =30mm, the maximum outer radius of the bellows section of the V-shaped ball head 3 is 30mm; the radius of the arc section (2A6, 2B6) of the neck of the A ball head is The long radius of the elliptical segments (2A5, 2B5) is Oa=135mm, and the short radius is Ob=90mm.

[0128] The casing preparation process is hot extrusion molding, and the process is as follows:

[0129] In step 101, the aluminum alloy is prepared according to a certain ratio, and the aluminum alloy blank is heated to 460°C in a box-type resistance furnace for 60 minutes;

[0130] In step 102, the temperature of the extrusion die is heated to 500°C and kept for 30 minutes, and the billet is hot-extruded into Bar blanks;

[0131] In step 103, the bar stock is processed into the required hollow structure by punching or machining.

[0132] The precision extrusion molding process of the ball head is:

[0133] The manufacturing process of the ball head can be radial extrusion molding, and the extrusion rate is 5.0 mm/s.

[0134] In step 201, the aluminum alloy is prepared according to a certain ratio, the size of the ball head blank is set according to the design size, and the blank is heated to 420°C in a box-type resistance furnace for 60 minutes;

[0135] In step 202, the temperature of the extrusion die is heated to 450°C for 30 minutes;

[0136] In step 203, the heated billet is transferred to the extrusion die within 4s. After the punch is in contact with the billet, the extruder performs forward extrusion of the ball head at an extrusion rate of 5.0mm/s to extrude the ball head. Pressed into a cavity;

[0137] In step 204, the ball head is squeezed twice to form the designed shape, and then the punch is reset, and the ball head is taken out of the mold.

[0138] The precision extrusion molding process of the V-shaped ball head is:

[0139] The preparation process of the V-shaped ball head may be extrusion molding, and the extrusion rate is 5.2 mm/s.

[0140] In step 301, the aluminum alloy is prepared according to a certain ratio, the size of the ball head blank is set according to the design size, and the blank is heated to 440°C in a box-type resistance furnace for 60 minutes;

[0141] In step 302, the temperature of the special extrusion die is heated to 450°C and kept for 30 minutes;

[0142] In step 303, the heated billet is transferred to a special extrusion die within 5s. After the punch contacts the billet, the extruder performs forward extrusion of the ball head at an extrusion rate of 6.0mm/s, and the V-shaped The ball head is squeezed into a cavity;

[0143] In step 304, the V-shaped ball head is squeezed twice to form the designed shape, and then the punch is reset, and the ball head is taken out of the mold.

[0144] Assembly of aluminum alloy thrust rod body

[0145] In the present invention, the aluminum alloy ball head, the V-shaped ball head and the aluminum alloy sleeve are connected by integral hot riveting, which specifically includes the following steps:

[0146] Assembling step one, place the sleeve in a box heating furnace and heat it to 260°C at a heating rate of 6.0mm/s;

[0147] Assembling step two, place the two ball heads and the V-shaped ball head in the special end sliding seat of the press tooling mold;

[0148] Assembling step three, take out the casing after heat preservation at 260°C for 60 minutes and place it on a mold block of the same height as the ball head. The transfer process time is controlled within 12 seconds;

[0149] Assembling step four, start the button for the relative movement of the slide power cylinder, so that the ball head slide is driven by the slide power cylinder to move relatively close in the axial direction along the floating plate at a relative speed of 6.0m/s. Until the two ball heads and the V-shaped ball head are respectively sleeved on both ends of the casing;

[0150] Assembling step five, set the riveting pressure to 900KN, control the upper platen of the press to move down at a speed of 8.0m/s, drive the upper riveting die to press down and the lower riveting die to match, and to align the ball head and sleeve at both ends of the sleeve Hot riveting of the joints, the riveting time is 8s;

[0151] Assembling step 6, after the overall hot riveting is completed, the upper plate of the control press drives the upper riveting die to move up together, and finally the thrust rod body after the riveting is taken out.

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PUM

Property	Measurement	Unit
Average tensile strength	511.7	mPa
Yield strength	435.43	mPa
tensile		MPa
Particle size		Pa
strength	10

Description & Claims & Application Information

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Aluminum alloy split V-shaped thrust rod and preparation method and hot riveting assembly method thereof

AI-Extracted Technical Summary

Problems solved by technology

Abstract

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Examples

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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