CN211280488U

CN211280488U - Spinning blank structure of automobile aluminum alloy hub

Info

Publication number: CN211280488U
Application number: CN201921894870.2U
Authority: CN
Inventors: 吴振国
Original assignee: Liuzhou Yiyang Science And Technology Co ltd
Current assignee: Liuzhou Yiyang Science And Technology Co ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-08-18
Anticipated expiration: 2029-11-05

Abstract

The utility model discloses car aluminum alloy wheel hub spinning blank structure, including spoke and rim, rim and spoke link inside wall are outstanding to be equipped with and to support the boss of location each other with the spinning mould, and the contained angle of rim lateral wall and horizontal plane is 72-74 degrees, and the rim highly uprises in vertical direction, by with the spoke link to keeping away from the spoke link the thickness of rim increases gradually, and the tip that spoke one end was kept away from to the rim is smooth plane. Adopt the utility model discloses the structure can be applicable to new spinning technology and guarantees aluminum alloy wheel hub spinning quality.

Description

Spinning blank structure of automobile aluminum alloy hub

Technical Field

The utility model relates to an aluminum alloy wheel hub field, in particular to car aluminum alloy wheel hub spinning blank structure.

Background

The traditional machining process of the automobile aluminum alloy cast spinning hub comprises eight procedures of casting, sprue removing, flash removing, center hole turning, heating, spinning, machining, coating and the like. The traditional casting and spinning process needs to ensure the adaptation and the positioning of spinning by removing a sprue, removing a flash and turning a central hole. The traditional process has the advantages that the production period of the product is long, the investment of equipment and personnel is large, in addition, a large amount of energy is consumed due to the fact that the workpiece needs to be heated before spinning, and the production cost is high. The engineering technicians in the industry improve the production process, and the processing process of the automobile aluminum alloy cast-spinning hub is changed into the processing process which only comprises the working procedures of casting, spinning, machining, coating and the like. The novel production process has short period, the cast workpiece directly enters the spinning process without being cooled, and the sprue, the flash and the central hole of the workpiece do not need to be removed before the spinning process, so that a large amount of energy consumption can be saved. But the traditional aluminum alloy hub spinning blank structure is not suitable for the current spinning process, the traditional aluminum alloy hub spinning blank structure is shown in figure 1, but the following defects exist because the aluminum alloy hub spinning blank structural design is unreasonable: 1. the inner side of the rim has no positioning end face, the window flange is machined to remove the flange, and a positioning face mutually positioned with the spinning die is machined; 2. the rim is short, an included angle A1 between the outer wall of the rim and the horizontal line is 69 degrees, the rim at the position is an automobile aluminum alloy hub rim (the rim is a hub with the specification in the following description), the height H1 of the rim in the vertical direction is 87 mm, the thickness E1 (D2 =25.27 mm) at the tail end of the rim is large and is increased too fast, the defect that spinning is not in place easily occurs when the thickness of the tail end of the rim is large in the spinning processing process, equipment is stressed unevenly in the spinning processing process due to the fact that the thickness is increased fast, overload occurs to cause cutter clamping and alarming, and equipment damage is easily caused; 3. the tail end of the rim is arc-shaped, the outer edge of the tail end is provided with a bulge 12, a tail end blank is not contacted with a die in the spinning process, and the defect that the spinning is not in place is easily caused; 4. the thickness D1 of the root part of the rim is small and is usually only 9mm (the diameter is eighteen inches of the automobile aluminum alloy hub rim), strong downward pulling force exists in the spinning process, the rim is too thin and can be deformed or broken, and the rim is too thin and is not beneficial to casting; 5. the whole length of rim is shorter, and tail end thickness is too big, can cause equipment atress inequality in the spinning course of working, appears transshipping and leads to the card sword and report to the police, causes equipment to damage easily. Therefore, a new aluminum alloy hub spinning blank structure is urgently needed to be designed to better adapt to a new spinning process.

Disclosure of Invention

The utility model aims at the defect that above-mentioned prior art exists, provide one kind and can be applicable to new spinning technology and guarantee automobile aluminum alloy wheel hub spinning blank structure of aluminum alloy wheel hub spinning quality.

The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: automobile aluminum alloy wheel hub spinning blank structure, including spoke and rim, rim and spoke link inside wall are outstanding to be equipped with and lean on the boss of location each other with the spinning mould, and the contained angle of rim lateral wall and horizontal plane is 72-74 degrees, by with spoke link to keeping away from the spoke link the thickness of rim increases gradually, the tip that spoke one end was kept away from to the rim is smooth plane.

The utility model discloses a further technical scheme is: the wall thickness of the rim connected with the spoke is the minimum, the minimum wall thickness of the rim is 11-14mm, the maximum wall thickness position of the rim is positioned at the end part of the rim far away from one end of the spoke, and the maximum wall thickness of the rim is 18-22 mm.

The utility model discloses a further technical scheme is: the boss is formed by each spoke and rim connection end portion upwards extending, and the upper surface of the boss is a flat plane.

The utility model discloses car aluminum alloy wheel hub spinning blank structure has following beneficial effect: the bosses are arranged on the inner side walls of the connecting ends of the rim and the spoke and can be abutted against and positioned with the spinning die, so that direct and accurate positioning can be realized, spinning is not needed to be carried out after a positioning surface is processed on a cast blank, the cast blank can be directly spun without being cooled, the processing links are reduced, and a new process is effectively adapted; the contained angle of rim lateral wall and horizontal plane increases than prior art for the height of rim becomes high, and the terminal tip of rim is smooth plane, guarantees sufficient spinning machining allowance, is difficult for appearing the problem that spinning does not put in place, and equipment atress is even among the spinning machining process, guarantees the stability of spinning quality, and improve equipment's effective rate of utilization prolongs the life of equipment, and then reduction in production cost.

The following describes the spinning blank structure of the aluminum alloy wheel hub of the present invention with reference to the accompanying drawings and embodiments.

Drawings

FIG. 1 is a schematic structural view of a prior art automotive aluminum alloy hub spun blank structure;

FIG. 2 is a schematic structural diagram of the spinning blank structure of the aluminum alloy wheel hub of the utility model;

FIG. 3 is a schematic structural view of the spinning blank structure of the aluminum alloy wheel hub of the present invention positioned in a spinning mold;

FIG. 4 is an enlarged partial view of FIG. 3;

the reference numbers illustrate: the wheel hub spinning method comprises the following steps of 1-a wheel disc, 2-a wheel rim, 3-an end part of the wheel rim far away from one end of the wheel disc, 4-a boss, 5-a tail jacking tool, 6-an ejector, 7-a spinning wheel hub, 8-an upper mold core, 9-a connecting flange, 10-a machine table, 11-a spinning cutter and 12-a bulge.

Detailed Description

As shown in fig. 2 and fig. 3, the utility model discloses car aluminum alloy wheel hub spinning blank structure (for short, "wheel hub spinning blank"), including spoke 1 and rim 2. Wherein the protruding boss 4 that leans on the location each other with the spinning mould that is equipped with in

rim

2 and 1 link inside wall of spoke, boss 4 is upwards extended by each

spoke

1 and 2 link tip of rim and forms, and 4 upper surfaces of boss are smooth planes. The boss 4 is beneficial to mutual positioning between the spinning process and the spinning die, machining before the spinning process is not needed, and the trouble caused by the procedure that the window flash needs to be machined to remove the flash can be well solved.

The included angle between the outer side wall of the rim 2 and the horizontal plane is 72-74 degrees, taking an automobile aluminum alloy hub with the diameter of eighteen inches as an example, the included angle A2 between the outer side wall of the rim 2 and the horizontal plane is 73 degrees. The angle between the outer side wall of the rim 2 and the horizontal plane is increased so that the height of the rim 2 in the vertical direction becomes high, and the height H2 of the rim 2 in the vertical direction is 116 mm. By with 1 link of spoke to keeping away from 1 link of spoke the thickness of rim 2 increases gradually, rim 2 wall thickness optimization becomes the increase that has the gradient for spinning sword 11 atress is even, has both guaranteed the spinning quality and has avoided equipment atress uneven in the spinning course of working, appears transshipping and leads to the card sword and report to the police, causes equipment to damage easily, and the adequate spinning allowance also can be guaranteed to the height of appropriate rising rim 2. The wall thickness of the rim 2 at the connecting end of the spoke 1 is the minimum, the minimum wall thickness of the rim 2 is 11-14mm, and taking an automobile aluminum alloy hub with the diameter of eighteen inches as an example, the minimum wall thickness D2 of the rim 2 at the connecting end of the rim 2 and the spoke 1 is 12 mm. The wall thickness here is the obvious increase of prior art, can prevent that the spinning course of working from having powerful decurrent pulling force, and arouse this department by tensile deformation or fracture, can increase the passageway of aluminium water when adopting this structure casting, lets the mould cavity that the aluminium water is full of the casting mould faster, can improve production efficiency.

The position of the maximum wall thickness of the rim 2 is positioned at the end part 3 of the rim far away from the spoke, and the maximum wall thickness of the rim 2 is 18-22 mm. Taking an automobile aluminum alloy hub with the diameter of eighteen inches as an example, the maximum wall thickness E2 of the rim 2 is 19 +/-3 mm. The tip that rim 2 kept away from spoke 1 one end is smooth plane, and the medial surface that rim 2 and terminal surface are connected is the plane too, and the angle is close the right angle. By adopting the design, the defect that the spinning is not in place in the spinning processing process is avoided, the spinning processing is smoother, and the product quality is ensured.

Before spinning, a hub casting (namely, a hub spinning blank) is taken out of a casting die, the hub spinning blank is positioned in the spinning die, as shown in fig. 3 and 4, an upper die core 8 is connected with a machine table 10 through a connecting flange 9, an ejector 6 is arranged on the inner side of the upper end of the upper die core 8, the hub spinning blank is positioned at the upper ends of the upper die core 8 and the ejector 6, and steps matched with bosses 4 on the inner side of a rim 2 are arranged on the periphery of the outer side of the upper end of the upper die core 8. Go up tail top frock 5 and compress tightly the wheel hub spinning blank from top to bottom, can carry out spinning process to the wheel hub spinning blank by spinning sword 11. After the spinning, the spinning hub 7 is obtained, and has a structure shown by a two-dot chain line in the figure.

The above embodiments are only preferred embodiments of the present invention, the structure of the present invention is not limited to the forms illustrated in the above embodiments, and any modifications, equivalent substitutions and the like made within the spirit and principle of the present invention should be included within the scope of the present invention.

Claims

1. Car aluminum alloy wheel hub spinning blank structure, including spoke (1) and rim (2), its characterized in that, rim (2) and spoke (1) link inside wall are outstanding to be equipped with and lean on boss (4) of location each other with the spinning mould, and rim (2) lateral wall is 72-74 degrees with the contained angle of horizontal plane, by with spoke (1) link to keeping away from spoke (1) link the thickness of rim (2) increases gradually, and the tip that spoke (1) one end was kept away from in rim (2) is smooth plane.

2. The spinning blank structure of the automobile aluminum alloy hub is characterized in that the wall thickness of the rim (2) at the connecting end with the spoke (1) is the smallest, the minimum wall thickness of the rim (2) is 11-14mm, the position of the maximum wall thickness of the rim (2) is located at the end (3) of the rim far away from the spoke, and the maximum wall thickness of the rim (2) is 18-22 mm.

3. The spinning blank structure of the automobile aluminum alloy hub as claimed in claim 1, wherein the boss (4) is formed by extending upwards from the end of the connecting end of each spoke (1) and the rim (2), and the upper surface of the boss (4) is a flat plane.