CN111774818A - Manufacturing process of automobile aluminum alloy wheel decorative cover with small diameter of less than 6 inches - Google Patents
Manufacturing process of automobile aluminum alloy wheel decorative cover with small diameter of less than 6 inches Download PDFInfo
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- CN111774818A CN111774818A CN202010668828.XA CN202010668828A CN111774818A CN 111774818 A CN111774818 A CN 111774818A CN 202010668828 A CN202010668828 A CN 202010668828A CN 111774818 A CN111774818 A CN 111774818A
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- China
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- decorative cover
- stamping
- manufacturing process
- aluminum alloy
- bar
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B7/00—Wheel cover discs, rings, or the like, for ornamenting, protecting, venting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall, e.g. wheel cover discs, wheel cover discs with cooling fins
- B60B7/0026—Wheel cover discs, rings, or the like, for ornamenting, protecting, venting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall, e.g. wheel cover discs, wheel cover discs with cooling fins characterised by the surface
- B60B7/0033—Wheel cover discs, rings, or the like, for ornamenting, protecting, venting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall, e.g. wheel cover discs, wheel cover discs with cooling fins characterised by the surface the dominant aspect being the surface appearance
- B60B7/0053—Wheel cover discs, rings, or the like, for ornamenting, protecting, venting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall, e.g. wheel cover discs, wheel cover discs with cooling fins characterised by the surface the dominant aspect being the surface appearance the surface being decorated
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a manufacturing process of a small-diameter automobile aluminum alloy wheel decorative cover below 6 inches, which comprises the following steps of: sawing an aluminum bar by using a common sawing machine to obtain a bar blank; step two, heating the bar stock blank to obtain a preheated bar stock blank; preheating a stamping die, and then stamping the preheated bar blank on a stamping machine to obtain a decorative cover stamping part; step four, using a numerical control lathe to process the front surface and the back surface of the stamping part of the decorative cover and the groove matched with the wheel to the size required by the drawing, and leaving small allowance fine machining allowance to obtain a machined part of the decorative cover; and fifthly, carrying out surface cleaning and paint spraying, surface turning and transparent paint spraying treatment on the machined part of the decorative cover machine to obtain a finished product of the decorative cover of the aluminum alloy wheel. The invention can effectively improve the utilization rate of materials, reduce the material loss, save the processing time and improve the production efficiency; the product has compact and uniform surface and stable quality.
Description
Technical Field
The invention relates to the field of manufacturing of decorative accessories of automobile aluminum alloy wheels, in particular to a manufacturing process of a small-diameter automobile aluminum alloy wheel decorative cover below 6 inches.
Background
At present, the blank of the wheel decorative cover is manufactured by processes of injection molding, punch forming, casting forming and the like; the surface treatment modes include surface electroplating, surface painting, surface finish polishing and the like.
For the automobile aluminum alloy wheel decorative cover with a smaller diameter (less than 6 inches), a sawing machine is generally adopted to saw a small aluminum bar, and then a numerical control lathe is used for cutting. Although the processed bar has good surface quality, the bar has fixed specification, low material utilization rate and long processing time. In the processing mode, although the material utilization rate is high, the defects of sand holes, air lines and the like on the surface of a product are more, and the surface polishing color is poor. The two processes have the disadvantages of large machining allowance, long machining time and large cutter loss; the surface quality of the product is not stable.
Disclosure of Invention
The invention aims to solve the technical problem of providing a manufacturing process of an automobile aluminum alloy wheel decorative cover with a small diameter of less than 6 inches, which can effectively improve the utilization rate of materials, reduce the loss of the materials, save the processing time and improve the production efficiency; the product has compact and uniform surface and stable quality.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a manufacturing process of an automobile aluminum alloy wheel decorative cover with a small diameter of less than 6 inches comprises the following steps:
sawing an aluminum bar by using a common sawing machine to obtain a bar blank;
step two, heating the bar stock blank to obtain a preheated bar stock blank;
preheating a stamping die, and then stamping the preheated bar blank on a stamping machine to obtain a decorative cover stamping part;
step four, processing the front surface and the back surface of the decorative cover stamping part subjected to punch forming and the groove matched with the wheel to the dimensions required by the drawing by using a numerical control lathe to obtain a machined part of the decorative cover;
and fifthly, carrying out surface cleaning and paint spraying, surface turning and transparent paint spraying treatment on the machined part of the decorative cover machine to obtain a finished product of the decorative cover of the aluminum alloy wheel.
Preferably, the aluminum rod is a 6061 or 6063 aluminum alloy small aluminum rod, the diameter of the bar blank is 35mm, and the length of the bar blank is 37 mm.
Preferably, the second step is to heat the bar blank in a heating box, the temperature is controlled to be 400 +/-5 ℃, and the heat preservation time is 15-20 min.
Preferably, the preheating temperature of the stamping die in the third step is 250-300 ℃.
Preferably, the punch press is a 250-300T punch press.
Preferably, the step of stamping the preheated bar blank is to raise a stamping top die to a height of 250-350 mm, place the bar blank preheated in the heating and insulating box at the center of a stamping die within 3s, lower the stamping top die at a rate of 50-60 mm/s, lower the stamping top die at a rate of 30-40 mm/s when the distance between the stamping top die and the bar blank is 10-15 mm, raise the stamping top die to a height of 250-350 mm at a rate of 50-60 mm/s after the stamping top die and the stamping bottom die are tightly folded and kept for 2-3 s, and take out the decorative cover stamping part to obtain the decorative cover stamping part.
Preferably, the bright surface of the surface is machined by clamping and positioning a fan-shaped clamp and machining a PCD blade at the rotating speed of 1200-1500r/min, the Z-axis feeding amount of 0.10-0.150 mm and the X-axis feeding amount of 0.1-0.150 mm.
Preferably, the finishing member has a diameter of 60mm and a length of 25 mm.
Compared with the prior art, the invention has the following beneficial effects:
the aluminum bar with the standard diameter is sawed to obtain a bar blank, and the bar blank is sawed by a common sawing machine according to the length, so that the loss is small, the material utilization rate is improved, the material loss is reduced by 40-60%, and the processing time is saved by 50-70%; the bar blank and the stamping die are preheated once and are formed by hot stamping once, so that the product has compact and uniform surface, high qualification rate, stable quality and clear and bright metal color lines, and is integrated with the wheel state.
Drawings
FIG. 1 is a longitudinal cross-sectional view of the product at various stages of the process of the present invention;
FIG. 2 is a cut-away view of a billet of the present invention;
FIG. 3 is a sectional view of the bar stock blank of the present invention after being stamped;
fig. 4 is a cut-away view of the decorative cover stamping of the present invention after being turned.
In the figure: 1-bar stock blank, 2-decorative cover stamping part and 3-decorative cover machining part.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in FIG. 1, taking the D60X 25 (model C-798) automobile aluminum alloy wheel decorative cover as an example, the manufacturing process comprises the following steps:
1. material selection and sawing
(1) In the embodiment, a 6061 or 6063 aluminum alloy small aluminum rod is selected as a sawing material, and the components (%) of the material by weight are as follows
The material is a bar stock with a diameter of 35 mm.
(2) Sawing, namely sawing the aluminum bar by using a common sawing machine according to the length of 37mm to obtain a bar blank 1 with the mass of about 96 g. As shown in fig. 2.
2. Mold design
And (5) designing and developing a stamping die according to the shape of the decorative cover.
3. Heating of bar stock blanks
And (3) heating the bar blank 1 in a heating box, controlling the temperature to be 400 +/-5 ℃, and keeping the temperature for about 15-20 min.
4. Stamping
The stamping die is preheated to 250-300 ℃, so that the stamping deformation of the workpiece in the stamping process can be more sufficient and complete. A 250-300T punch is selected, the stamping top die is lifted to the height of 250-350 mm, the bar blank 1 preheated in the heating and insulating box is placed at the center of the stamping die within 3s, the stamping top die is lowered at the speed of 50-60 mm/s, and when the distance between the stamping top die and the bar blank 1 is 10-15 mm, the stamping top die is lowered at the speed of 30-40 mm/s, so that the phenomenon that the stamping top die is too high in speed and the bar blank 1 is cracked due to deformation is avoided; and after the stamping top die and the stamping bottom die are tightly folded and kept for 2-3 s, raising the stamping top die to the height of 250-350 mm at the speed of 50-60 mm/s, and taking out the decorative cover stamping part 2 to obtain the decorative cover stamping part 2 shown in the figure 3, wherein the diameter of the decorative cover stamping part 2 is 61.8mm, and the length of the decorative cover stamping part is 26.4 mm. The process can ensure that the shape and the size of the workpiece after stamping deformation can obtain sufficient stability.
5. Turning process
And (3) processing the front surface and the back surface of the stamping part 2 of the decorative cover and the groove matched with the wheel to the size required by the drawing by using a numerical control lathe, and leaving a small allowance of fine finishing allowance to obtain the machined part 3 of the decorative cover shown in figure 4, wherein the diameter is 60mm, and the length is 25 mm.
6. Surface cleaning spray paint
(1) The method comprises the following steps of performing a coating process on a machined part 3 of the decorative cover with qualified shape, size and appearance, and cleaning the machined part firstly, wherein the process comprises the following steps: degreasing, washing, surface conditioning, pure water washing, passivation, pure water washing and drying.
(2) Then, according to the design and development color requirements of the decorative cover, spraying colored paint on the decorative cover, and curing the colored paint; controlling the temperature in the furnace to be 150-.
7. Watch surface (Fine processing)
Clamping and positioning by using a fan-shaped clamp, carrying out bright surface turning on the surface, wherein a PCD blade is used for processing in the bright surface turning process, the rotating speed is 1200 + 1500r/min, the Z-axis feeding amount is 0.10-0.150 mm, and the X-axis feeding amount is 0.1-0.150 mm.
8. Spraying transparent paint
(1) Firstly, carrying out surface treatment, comprising: washing, passivating and drying.
(2) And then, spraying transparent paint, wherein the thickness of the transparent paint is 20-30 um.
(3) And (4) inspecting the appearance of the decorative cover according to the appearance quality requirement, and waiting for assembling and delivering the qualified decorative cover.
The invention takes the aluminum alloy bar as the base material, adopts the manufacturing methods of one-time hot stamping forming, bright surface after coating and the like, has low cost, saves materials, reduces the processing time, has high qualification rate and beautiful color, is integrated with the state of the wheel, overcomes the defects of the traditional casting forming, stamping forming and injection molding, and adds fashionable and beautiful aesthetic feeling to the automobile.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (8)
1. A manufacturing process of an automobile aluminum alloy wheel decorative cover with a small diameter of less than 6 inches is characterized by comprising the following steps:
sawing an aluminum bar by using a common sawing machine to obtain a bar blank;
step two, heating the bar stock blank to obtain a preheated bar stock blank;
preheating a stamping die, and then stamping the preheated bar blank on a stamping machine to obtain a decorative cover stamping part;
step four, using a numerical control lathe to process the front surface and the back surface of the stamping part of the decorative cover and the groove matched with the wheel to the size required by the drawing, and leaving small allowance fine machining allowance to obtain a machined part of the decorative cover;
and fifthly, carrying out surface cleaning and paint spraying, surface turning and transparent paint spraying treatment on the machined part of the decorative cover machine to obtain a finished product of the decorative cover of the aluminum alloy wheel.
2. The manufacturing process of the aluminum alloy wheel decorative cover of the automobile with the small diameter of less than 6 inches according to claim 1, wherein the manufacturing process comprises the following steps: the aluminum bar is a 6061 or 6063 aluminum alloy small aluminum bar, the diameter of the bar blank is 35mm, and the length of the bar blank is 37 mm.
3. The manufacturing process of the 6-inch and below small-diameter automobile aluminum alloy wheel decorative cover according to claim 1 or 2, characterized in that: and step two, the bar blank is placed in a heating box to be heated, the temperature is controlled to be 400 +/-5 ℃, and the heat preservation time is 15-20 min.
4. The manufacturing process of the aluminum alloy wheel decorative cover of the automobile with the small diameter of less than 6 inches according to claim 3, wherein the manufacturing process comprises the following steps: and in the third step, the preheating temperature of the stamping die is 250-300 ℃.
5. The manufacturing process of the aluminum alloy wheel decorative cover of the automobile with the small diameter of less than 6 inches according to claim 1, wherein the manufacturing process comprises the following steps: the punch press is a 250-300T punch press.
6. The manufacturing process of the 6-inch and below small-diameter automobile aluminum alloy wheel decorative cover according to claim 1 or 5, characterized in that: and stamping the preheated bar blank, specifically, raising the stamping top die to a height of 250-350 mm, placing the bar blank preheated in the heating and insulating box at the central position of a stamping die within 3s, lowering the stamping top die at a speed of 50-60 mm/s, lowering the stamping top die at a speed of 30-40 mm/s when the distance between the stamping top die and the bar blank is 10-15 mm, raising the stamping top die to a height of 250-350 mm at a speed of 50-60 mm/s after the stamping top die and the stamping bottom die are tightly folded and kept for 2-3 s, and taking out the decorative cover stamping part to obtain the decorative cover stamping part.
7. The manufacturing process of the aluminum alloy wheel decorative cover of the automobile with the small diameter of less than 6 inches according to claim 1, wherein the manufacturing process comprises the following steps: the bright surface of the surface is turned by clamping and positioning a fan-shaped clamp and processing a PCD blade at the rotating speed of 1200-1500r/min, the Z-axis feeding amount is 0.10-0.150 mm, and the X-axis feeding amount is 0.1-0.150 mm.
8. The manufacturing process of the aluminum alloy wheel decorative cover of the automobile with the small diameter of less than 6 inches according to claim 1, wherein the manufacturing process comprises the following steps: the machined part of the decorative cover is 60mm in diameter and 25mm in length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010668828.XA CN111774818A (en) | 2020-07-13 | 2020-07-13 | Manufacturing process of automobile aluminum alloy wheel decorative cover with small diameter of less than 6 inches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010668828.XA CN111774818A (en) | 2020-07-13 | 2020-07-13 | Manufacturing process of automobile aluminum alloy wheel decorative cover with small diameter of less than 6 inches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111774818A true CN111774818A (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010668828.XA Withdrawn CN111774818A (en) | 2020-07-13 | 2020-07-13 | Manufacturing process of automobile aluminum alloy wheel decorative cover with small diameter of less than 6 inches |
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| Country | Link |
|---|---|
| CN (1) | CN111774818A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114131380A (en) * | 2022-01-14 | 2022-03-04 | 宁波江丰电子材料股份有限公司 | Positioning clamp for special-shaped target and machining method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3335915A1 (en) * | 1983-10-03 | 1985-04-18 | Bayrisches Druckgußwerk Thurner GmbH & Co KG, 8015 Markt Schwaben | WHEEL COVER AND METHOD FOR THE PRODUCTION THEREOF |
| CN103272985A (en) * | 2013-06-05 | 2013-09-04 | 诸暨万畅磁电科技有限公司 | Forming process for end caps of four-way reversing valves for air conditioners |
| CN103737325A (en) * | 2013-11-13 | 2014-04-23 | 江苏凯特汽车部件有限公司 | Manufacturing process for large-diameter automobile aluminum alloy wheel decorative cover larger than 26 inches |
| CN204077223U (en) * | 2014-08-27 | 2015-01-07 | 安徽江淮汽车股份有限公司 | A kind of automobile wheel cap structure |
| CN205764919U (en) * | 2016-05-26 | 2016-12-07 | 广州市金钟汽车零件制造有限公司 | A kind of hub decorative lid production line |
| CN207057581U (en) * | 2017-07-26 | 2018-03-02 | 泰安和新精工科技有限公司 | A kind of hub decorative lid gravity mould |
| GB2557669A (en) * | 2016-12-15 | 2018-06-27 | Woodall Gloria | Wheel cap |
-
2020
- 2020-07-13 CN CN202010668828.XA patent/CN111774818A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3335915A1 (en) * | 1983-10-03 | 1985-04-18 | Bayrisches Druckgußwerk Thurner GmbH & Co KG, 8015 Markt Schwaben | WHEEL COVER AND METHOD FOR THE PRODUCTION THEREOF |
| CN103272985A (en) * | 2013-06-05 | 2013-09-04 | 诸暨万畅磁电科技有限公司 | Forming process for end caps of four-way reversing valves for air conditioners |
| CN103737325A (en) * | 2013-11-13 | 2014-04-23 | 江苏凯特汽车部件有限公司 | Manufacturing process for large-diameter automobile aluminum alloy wheel decorative cover larger than 26 inches |
| CN204077223U (en) * | 2014-08-27 | 2015-01-07 | 安徽江淮汽车股份有限公司 | A kind of automobile wheel cap structure |
| CN205764919U (en) * | 2016-05-26 | 2016-12-07 | 广州市金钟汽车零件制造有限公司 | A kind of hub decorative lid production line |
| GB2557669A (en) * | 2016-12-15 | 2018-06-27 | Woodall Gloria | Wheel cap |
| CN207057581U (en) * | 2017-07-26 | 2018-03-02 | 泰安和新精工科技有限公司 | A kind of hub decorative lid gravity mould |
Non-Patent Citations (1)
| Title |
|---|
| 吴诗惇等: "《冲压成形理论及技术》", 30 September 2012, 西安：西北工业大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114131380A (en) * | 2022-01-14 | 2022-03-04 | 宁波江丰电子材料股份有限公司 | Positioning clamp for special-shaped target and machining method thereof |
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Application publication date: 20201016 |