Precision wheel mold

Abstract

The present application belongs to the technical field of wheel, particularly relates to a precision wheel mold, the wheel mold is equipped with lower wheel rim mold and upper wheel rim mold; the lower wheel rim mold is equipped with guide sleeve, the upper wheel rim mold is equipped with guide column, and the guide sleeve is matched with the guide column; the lower wheel rim mold and the upper wheel rim mold are equipped with first annular insertion slot, second annular insertion slot, annular insertion block and the like.In the present application, through split type structure, adjustable wheel rim mold cavity and upper and lower wheel rim mold are gap insertion matched, so that the built-in wheel rim mold cavity and the mold can be freely disassembled, if necessary, the adjustable wheel rim mold cavity can be replaced according to the size of different wheel rim, so that the traditional wheel rim mold adopts integral casting, the size of wheel rim can be adjusted, and waste of other part structure of mold cavity is avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of vehicle wheels, and particularly relates to a precision vehicle wheel mold. BACKGROUND

[0002] The wheel hub is a cylindrical metal part in the automobile tire for supporting the tire around the shaft, in common parlance, it is the part of the center of the wheel for installing the axle, and is an important part for connecting the brake drum (brake disc), wheel disc and half shaft; the outermost wheel rim on the wheel hub is the main force bearing point of the wheel hub, so the corresponding wheel rim mold needs to be more precisely set to improve the production quality of the wheel rim, and the wheel rim mold in the prior art adopts one-piece casting, that is, a traditional aluminum casting mold; the wheel rim cavity in the wheel rim mold can be worn due to multiple casting of the wheel rim, which reduces the precision, and at the same time, the wheel rim cavity can only fix the size of the corresponding wheel rim for overall casting, so that the type of the mold is also fixed and cannot be adjusted according to the size of the wheel rim, which wastes the structures of other parts except the cavity, so there is an urgent need to develop a precision vehicle wheel mold capable of replacing the wheel rim cavity and improving the multiple use rate of the cavity and a multi-forging manufacturing process. SUMMARY

[0003] (I) Technical problem to be solved

[0004] In order to overcome the problems existing in the wheel rim mold in the prior art, the application provides a precision vehicle wheel mold capable of replacing the wheel rim cavity and improving the multiple use rate of the cavity and a multi-forging manufacturing process.

[0005] (II) Technical scheme

[0006] The application is implemented by the following technical scheme: the application provides a precision vehicle wheel mold, which is provided with a lower wheel rim mold and an upper wheel rim mold;

[0007] The lower wheel rim mold is provided with a guide sleeve, and the upper wheel rim mold is provided with a guide column, and the guide sleeve and the guide column are sleeved and matched;

[0008] The lower wheel rim mold and the upper wheel rim mold are both provided with a first annular insertion slot, a second annular insertion slot and an annular insertion block;

[0009] The first annular insertion slot, the second annular insertion slot and the annular insertion block jointly form a "bow" shape with a rotation angle of 90°;

[0010] It is also a "bow" shape, and is gap-inserted and matched with the first annular insertion slot, the second annular insertion slot and the annular insertion block;

[0011] The vehicle wheel mold is manufactured by a multi-forging manufacturing process, and the steps are as follows:

[0012] 1st): The lower rim mold and the upper rim mold are integrally formed according to the sand box casting process, and the lower rim mold and the upper rim mold provided with a first annular insertion groove, a second annular insertion groove and an annular insertion block structure are formed;

[0013] 2nd): Manufacturing process of replaceable rim mold cavity:

[0014] Blanking: Selecting a steel bar;

[0015] Blank preparation: Removing the oxide skin and fine cracks on the surface of the bar to obtain a bar blank;

[0016] Hot forging processing: The bar blank is forged by using a hot forging equipment, and a three-stage quenching and tempering two-stage hot rolling is adopted to form an "arch" shaped mold;

[0017] The steps of three-stage quenching and tempering two-stage hot rolling are:

[0018] First-stage quenching: quenching treatment is carried out by using a quenching furnace, the quenching temperature is 1200℃, the time is 20 minutes, and a first-stage quenching mold is formed;

[0019] First-time tempering: the first-stage quenching mold is tempered by using a heating furnace, the tempering temperature is 550℃, the holding time is 3 hours, and after self-cooling, a first-stage tempering mold is formed;

[0020] First-time hot rolling: hot rolling treatment is carried out by using a six-stand rolling mill, the temperature is 400℃, and a first-time hot rolling mold is formed;

[0021] Second-stage quenching: the first-time hot rolling mold is quenched by using a quenching furnace, the quenching temperature is 1000℃, the time is 30 minutes, and a second-stage quenching mold is formed;

[0022] Second-time tempering: the second-stage quenching mold is tempered by using a heating furnace, the tempering temperature is 350℃, the holding time is 6 hours, and after self-cooling, a second-stage tempering mold is formed;

[0023] Second-time hot rolling: hot rolling treatment is carried out by using a six-stand rolling mill, the temperature is 400℃, and a second-time hot rolling mold is formed, which is in the shape of "arch";

[0024] Third-stage quenching: the second-time hot rolling mold is quenched by using a quenching furnace, the quenching temperature is 800℃, the time is 1 hour, and a third-stage quenching mold is formed;

[0025] Third-time tempering: the third-stage quenching mold is tempered by using a heating furnace, the tempering temperature is 200℃, the holding time is 12 hours, and after self-cooling, an "arch" shaped mold is formed;

[0026] 3rd): Hot rolling coil forming: the "arch" shaped die is again subjected to hot rolling treatment by using a hot rolling machine, and finally the "arch" shaped die is coiled by using a coiling machine, the head and tail of the "arch" shaped die are welded to form a welding point, and finally the welding point and each concave part of the "arch" shaped die are polished flat by using a polisher to obtain a replaceable wheel ring die cavity.

[0027] As a priority, the lower wheel ring die and the upper wheel ring die are made of steel or aluminum.

[0028] As a priority, the replaceable wheel ring die cavity is made of alloy carburizing steel.

[0029] (Three) beneficial effects

[0030] Compared with the prior art, the present application has the following beneficial effects:

[0031] 1) In the present application, the replaceable wheel ring die cavity and the upper and lower wheel ring dies are gap-inserted and matched by means of split structure, so that the built-in wheel ring die cavity and the die can be freely disassembled, and if necessary, the replaceable wheel ring die cavity can be replaced according to the size of different wheel rings, thereby overcoming the problem that the traditional wheel ring die is integrally cast, achieving the adjustment according to the size of the wheel ring, and avoiding the waste of other parts structure except the die cavity.

[0032] 2) In the present application, the die cavity is designed by three-forging quenching and tempering hot rolling, which can eliminate the stress generated by the die, and at the same time, hot end processing can ensure the plasticity of the die cavity, low deformation resistance, high-quality die cavity, three-forging design is the best choice to improve production efficiency, and can ensure that the obtained die cavity is the best, hot rolling process can ensure high compactness of the die cavity, small machining allowance, high processing efficiency, high yield, high output, effectively improve the practicality and quality of the die cavity. BRIEF DESCRIPTION OF DRAWINGS

[0033] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, with reference to the accompanying drawings:

[0034] Fig. 1 is a structural schematic diagram of the present application.

[0035] Fig. 2 is a top view structural schematic diagram of the upper wheel ring die of the present application.

[0036] Fig. 3 is a three-dimensional structural schematic diagram of the replaceable wheel ring die cavity of the present application.

[0037] The marks in the drawings are: 1 - lower rim mold, 2 - upper rim mold, 3 - replaceable rim cavity, 31 - welding point, 4 - first annular insertion slot, 5 - second annular insertion slot, 6 - annular insertion block, 7 - guide sleeve, 8 - guide column. DETAILED DESCRIPTION

[0038] In the technical solution:

[0039] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0040] Referring to Figs. 1-3 The present application proposes a precision wheel mold, which is provided with a lower rim mold and an upper rim mold;

[0041] The lower rim mold is provided with a guide sleeve, and the upper rim mold is provided with a guide column, and the guide sleeve and the guide column are fitted together;

[0042] The lower rim mold and the upper rim mold are both provided with a first annular insertion slot, a second annular insertion slot and an annular insertion block;

[0043] The first annular insertion slot, the second annular insertion slot and the annular insertion block together form a "bow" shape that rotates by 90 degrees;

[0044] It is also a "bow" shape, and cooperates with the first annular insertion slot, the second annular insertion slot and the annular insertion block in a gap insertion manner;

[0045] In the present application, through the split structure, the adjustable rim cavity and the upper and lower rim molds are gap-inserted and cooperated, so that the built-in wheel rim cavity and the mold can be freely disassembled. If necessary, the adjustable rim cavity can be replaced according to the size of the different wheel rims, so that the traditional wheel rim mold adopts an integral casting, which can be adjusted according to the size of the rim, thereby avoiding waste of other parts of the mold cavity.

[0046] The wheel mold is manufactured by a multi-forging manufacturing process, and the steps are:

[0047] 1st): The lower rim mold and the upper rim mold are integrally formed according to the sand box casting process to form the lower rim mold and the upper rim mold provided with the first annular insertion slot, the second annular insertion slot and the annular insertion block structure. Here, it is the existing casting technology, which does not need to be explained in detail, and part of the mold is divided into parts using the existing technology, which has better economic benefits;

[0048] 2nd): Manufacturing process of replaceable rim cavity:

[0049] Blanking: select a bar of steel material;

[0050] Billet preparation: remove the scale and fine cracks on the surface of the bar stock to obtain a bar blank;

[0051] Hot forging processing: the bar blank is forged using a hot forging device, and a three-stage quenching and tempering two-stage hot rolling is adopted to form an "arch" shaped die (here, the "arch" shaped die, the spacing of each slot needs to meet the conditions of the first annular slot, the second annular slot, and the annular block of the lower rim die and the upper rim die are inserted and matched with each other);

[0052] The steps of the three-stage quenching and tempering two-stage hot rolling are as follows:

[0053] First-stage quenching: quenching treatment is performed using a quenching furnace, the quenching temperature is 1200°C, and the time length is 20 minutes to form a first-stage quenching die;

[0054] First-time tempering: the first-stage quenching die is tempered by a heating furnace, the tempering temperature is 550°C, the holding time is 3 hours, and after self-cooling, a first-stage tempering die is formed;

[0055] First-time hot rolling: hot rolling treatment is performed using a six-stand rolling mill, the temperature is 400°C, and a first-time hot rolling die is formed;

[0056] Second-stage quenching: the first-time hot rolling die is quenched again using a quenching furnace, the quenching temperature is 1000°C, and the time length is 30 minutes to form a second-stage quenching die;

[0057] Second-time tempering: the second-stage quenching die is tempered by a heating furnace, the tempering temperature is 350°C, the holding time is 6 hours, and after self-cooling, a second-stage tempering die is formed;

[0058] Second-time hot rolling: hot rolling treatment is performed using a six-stand rolling mill, the temperature is 400°C, and a second-time hot rolling die is formed, which is in the shape of an "arch";

[0059] Third-stage quenching: the second-time hot rolling die is quenched again using a quenching furnace, the quenching temperature is 800°C, and the time length is 1 hour to form a third-stage quenching die;

[0060] Third-time tempering: the third-stage quenching die is tempered by a heating furnace, the tempering temperature is 200°C, the holding time is 12 hours, and after self-cooling, an "arch" shaped die is formed;

[0061] 3rd): hot rolling coil forming: the "arch" shaped die is again subjected to hot rolling treatment using a hot rolling mill, and finally, the "arch" shaped die is coiled using a coiling machine. The head and tail of the "arch" shaped die are welded to form a welding point. Finally, the welding point and each concave part of the "arch" shaped die are polished flat using a polisher to obtain a replaceable rim die cavity.

[0062] The lower wheel rim mold and the upper wheel rim mold are made of steel or aluminum.

[0063] The replaceable wheel rim cavity is made of alloy carburizing steel.

[0064] The mold cavity design in the application can eliminate the stress generated by the mold through three-forging quenching and tempering hot rolling, and at the same time, hot end processing can ensure the plasticity of the mold cavity, lower deformation resistance, and obtain a high-quality mold cavity.

[0065] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0066] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically defined and limited.

[0067] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0068] In the present application, unless otherwise explicitly specified and limited, "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "over" of a first feature to a second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. "Under", "below" and "underneath" of a first feature to a second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0069] The above description is merely preferred embodiments of the present application, but not for limiting the present application. The present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A precision wheel mold characterized by: The wheel mold is provided with a lower rim mold and an upper rim mold; The lower rim mold is provided with a guide sleeve, and the upper rim mold is provided with a guide column, and the guide sleeve and the guide column are sleeved and matched; The lower rim mold and the upper rim mold are provided with a first annular insertion slot, a second annular insertion slot and an annular insertion block; The first annular insertion slot, the second annular insertion slot and the annular insertion block jointly form a "arch" shape with a rotation angle of 90°; The replaceable rim mold cavity is also an "arch" shape and is gap-inserted and matched with the first annular insertion slot, the second annular insertion slot and the annular insertion block; The wheel mold is manufactured by a multi-forging manufacturing process, and the steps are as follows: 1st): The lower rim mold and the upper rim mold are integrally formed according to the sand box casting process to form the lower rim mold and the upper rim mold provided with the first annular insertion slot, the second annular insertion slot and the annular insertion block structure; 2nd): Manufacturing process of the replaceable rim mold cavity: Blanking: selecting a steel bar material; Blank preparation: removing the oxide skin and fine cracks on the surface of the bar material to obtain a bar blank; Hot forging processing: the bar blank is forged by using a hot forging equipment, and a three-stage quenching and tempering two-stage hot rolling is adopted to form an "arch" shaped mold; The steps of the three-stage quenching and tempering two-stage hot rolling are as follows: First-stage quenching: quenching treatment is performed by using a quenching furnace, the quenching temperature is 1200°C, the time length is 20 minutes, and a first-stage quenching mold is formed; First-time tempering: the first-stage quenching mold is tempered by using a heating furnace, the tempering temperature is 550°C, the holding time is 3 hours, and after self-cooling, a first-stage tempering mold is formed; First-time hot rolling: hot rolling treatment is performed by using a six-roller mill, the temperature is 400°C, and a first-time hot rolling mold is formed; Second-stage quenching: the first-time hot rolling mold is quenched by using a quenching furnace, the quenching temperature is 1000°C, the time length is 30 minutes, and a second-stage quenching mold is formed; Second-time tempering: the second-stage quenching mold is tempered by using a heating furnace, the tempering temperature is 350°C, the holding time is 6 hours, and after self-cooling, a second-stage tempering mold is formed; Second-time hot rolling: hot rolling treatment is performed by using a six-roller mill, the temperature is 400°C, and a second-time hot rolling mold is formed, which has an "arch" shape; Third-stage quenching: the second-time hot rolling mold is quenched by using a quenching furnace, the quenching temperature is 800°C, the time length is 1 hour, and a third-stage quenching mold is formed; Third-time tempering: the third-stage quenching mold is tempered by using a heating furnace, the tempering temperature is 200°C, the holding time is 12 hours, and after self-cooling, an "arch" shaped mold is formed; 3rd): Hot rolling coiling forming: the "arch" shaped mold is again subjected to hot rolling treatment by using a hot rolling machine, and finally, the "arch" shaped mold is coiled by using a coiling machine, the head and tail of the "arch" shaped mold are welded to form a welding point, and finally, the welding point and each concave part of the "arch" shaped mold are polished flat by using a polisher to obtain a replaceable rim mold cavity.

2. A precision wheel mold according to claim 1, wherein: The lower rim mold and the upper rim mold are made of steel or aluminum.

3. A precision wheel mold as defined in claim 1, wherein: The replaceable rim mold cavity is made of alloy carburizing steel.

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