A method for adjusting a door handle area of a door outer panel drawing die

Abstract

The application discloses a door handle area debugging method of a vehicle door outer plate drawing die, and relates to the technical field of drawing die debugging. The method is mainly used for solving the problem that irreversible defects are caused by die surface defects in the existing debugging method. The method comprises the following steps in sequence: S1, sample parts are trial-produced and are colored with lanolin; S2, if the coloring is uneven, the defects of the door handle area of the sample parts are polished by using a grinding wheel; S3, other areas of the sample parts are colored with lanolin, and if the coloring is uneven, the drawing die is reprocessed; S4, sample parts are trial-produced again and are colored with lanolin; and S5, if the coloring is uneven, the door handle forming area of the drawing die is reprocessed. The door handle area debugging method of the vehicle door outer plate drawing die can avoid irreversible influence caused by die surface defects, so that the door handle area surface defects can be eliminated, the surface quality of the parts is improved, and the satisfaction of customers is met.

Description

Technical Field

[0001] This invention relates to the field of drawing die debugging technology, and in particular to a method for debugging the door handle area of ​​a drawing die for an outer panel of a car door. Background Technology

[0002] The method for adjusting the drawing die for automotive door outer panels is used in the drawing process of the front and rear door outer panels of automotive body panels. Currently, the conventional method for adjusting the drawing die for automotive door outer panels is to first check the coloring of the door handle area based on the coloring of the first part. If the coloring is not good, the drawing die punch / die in that area is then ground and fitted. The fitter usually uses an air gun to grind the corresponding minor unevenness of the drawing die punch / die in 0.01mm increments, and then polishes it with sandpaper to improve the coloring of the die and meet customer requirements.

[0003] However, during production, it was discovered that poor coloring in the door handle area was not necessarily caused by minor unevenness on the surface of the drawing die punch / die. If the surface of the door handle area of ​​the drawing die punch / die is ground and the coloring is properly matched during the initial fitting stage, the coloring in the door handle area will actually worsen after the rest of the die is fitted. A typical surface defect is the concavity problem in the door handle area. Furthermore, since welding repair is not allowed on the drawing die of the outer panel A side, this type of surface defect becomes the primary problem affecting die shipment in the later stages of die debugging, seriously affecting the surface quality of the parts. Summary of the Invention

[0004] The purpose of this invention is to provide a method for adjusting the door handle area of ​​a drawing die for an outer door panel. This method can avoid irreversible effects caused by missing die surface material, thereby ensuring the elimination of surface defects in the door handle area, improving the surface quality of the parts, and ultimately satisfying customer satisfaction.

[0005] To achieve the above objectives, the present invention provides a method for adjusting the door handle area of ​​a car door outer panel drawing die, comprising the following steps:

[0006] S1. Use an un-blended car door outer panel drawing die to make a sample part, and apply blue oil coloring to the door handle area of ​​the sample part.

[0007] S2. Check if the coloring of the door handle area of ​​the sample is uniform. If the coloring is not uniform, use a grinding wheel to grind the defects in the door handle area of ​​the sample to eliminate the defects.

[0008] S3. Apply blue oil coloring to other areas of the sample and check whether the coloring of other areas of the sample is uniform. If the coloring is not uniform, use the sample to grind and match other areas of the drawing die to eliminate defects in other areas of the drawing die.

[0009] S4. Use the drawing die of the outer door panel after the first grinding and mixing to make a second sample part, and apply blue oil coloring to the door handle area of ​​the second sample part.

[0010] S5. Check whether the coloring of the door handle area of ​​the second trial sample is uniform. If the coloring is not uniform, use the second trial sample to grind and fit the door handle forming area of ​​the drawing die to eliminate the defects in the door handle forming area of ​​the drawing die.

[0011] As a further improvement of the present invention, after step S5, the following steps are also included in sequence:

[0012] S6. Use the extended die of the outer door panel after secondary grinding and mixing to make a sample part again, and apply blue oil coloring to the door handle area of ​​the sample part made in the third trial.

[0013] S7. Check whether the coloring of the door handle area of ​​the three trial samples is uniform. If the coloring is not uniform, add material feed ribs to the corresponding supplementary surface of the door handle area. By changing the line length change during the sheet forming process, the sheet material flows and the rigidity of the door handle area of ​​the part is increased, thereby eliminating the defects in the door handle forming area of ​​the drawing die.

[0014] As a further improvement of the present invention, the feed rib is a semi-circular raised rib with a height of 3mm and a radius of 2.5mm.

[0015] As a further improvement of the present invention, in steps S2, S3, S5 and S7, when checking whether the coloring of the test sample is uniform, if the coloring is uniform, it is also necessary to use an oilstone to check whether the surface quality and curvature of the door handle area of ​​the sample are qualified. If the surface quality is not qualified, the defective area of ​​the sample is determined by using an oilstone.

[0016] Beneficial effects

[0017] Compared with the prior art, the advantages of the door handle area debugging method of the car door outer panel drawing die of the present invention are as follows:

[0018] This method first grinds the door handle area of ​​the sample part instead of directly grinding the door handle forming area of ​​the drawing die. After the color of the door handle area of ​​the sample part meets the requirements, the other areas of the drawing die are then prepared. Finally, the un-ground, second-run sample part is used to prepare the door handle area of ​​the drawing die. This method allows the door handle forming area of ​​the drawing die to be prepared last, eliminating the possibility of the preparation of other areas of the drawing die affecting the door handle area of ​​the product. This avoids irreversible effects caused by defects in the die surface, thereby eliminating surface defects, improving the surface quality of the parts, and ultimately meeting customer satisfaction.

[0019] The invention will become clearer from the following description, taken in conjunction with the accompanying drawings, which are used to explain embodiments of the invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a flowchart of the process flow of the present invention;

[0022] Figure 2 This is a schematic diagram of the material feeding rib. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0024] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0025] Example

[0026] Specific embodiments of the present invention are as follows: Figure 1-2 As shown, a method for adjusting the door handle area of ​​a car door outer panel drawing die includes the following steps:

[0027] S1. Use an un-blended car door outer panel drawing die to make a sample part, and apply blue oil coloring to the door handle area of ​​the sample part.

[0028] S2. Check if the coloring of the door handle area of ​​the sample is uniform. If the coloring is uniform, use an oilstone to check if the surface quality and curvature of the door handle area of ​​the sample are up to standard. If the surface quality is up to standard, there is no need to optimize the door handle forming area of ​​the drawing die. If the surface quality is not up to standard, use an oilstone to identify the defective area of ​​the sample and use a grinding wheel to grind the defective area to eliminate the defect in the door handle area of ​​the sample.

[0029] S3. Apply blue oil coloring to other areas of the sample and check whether the coloring is uniform. If the coloring is uniform, use an oilstone to check whether the surface quality and curvature of other areas of the sample are up to standard. If the surface quality is up to standard, there is no need to optimize the other forming areas of the drawing die. If the surface quality is not up to standard, use an oilstone to identify the defective areas of the sample and use the sample to optimize the other areas of the drawing die to eliminate the defects in the other areas of the drawing die.

[0030] S4. Use the drawing die of the outer door panel after the first grinding and mixing to make a second sample part, and apply blue oil coloring to the door handle area of ​​the second sample part.

[0031] S5. Check whether the coloring of the door handle area of ​​the second trial sample is uniform. If the coloring is uniform, use an oilstone to check whether the surface quality and curvature of the door handle area of ​​the sample are up to standard. If the surface quality is up to standard, there is no need to optimize the door handle forming area of ​​the drawing die. If the surface quality is not up to standard, use an oilstone to identify the defective area of ​​the second trial sample, and use the second trial sample to optimize the door handle forming area of ​​the drawing die to eliminate the defects in the door handle forming area of ​​the drawing die.

[0032] Compared to this method, existing methods immediately optimize the door handle forming area of ​​the drawing die after detecting a defect in the sample part's door handle area. This optimization involves grinding the forming surface of the door handle forming area of ​​the drawing die to make the sample part's door handle area acceptable before proceeding to other areas. However, by the time other areas of the drawing die are optimized, the door handle area may have developed a problem. At this point, because the forming surface of the door handle forming area of ​​the drawing die has already been ground, it is microscopically open, leaving no margin for further optimization by the fitter. This results in irreversible consequences, making the door handle defect unresolved until delivery.

[0033] To address this, the new debugging method involves first grinding the door handle area of ​​the sample part instead of directly grinding the door handle forming area of ​​the drawing die. This ensures the door handle area of ​​the sample part meets the coloring requirements while keeping the forming surface of the door handle forming area of ​​the drawing die unchanged. Then, the other areas of the drawing die are properly fitted. Once the coloring of the other areas meets the requirements, the sample part that was not ground is used again for the second trial production to fit the door handle area of ​​the drawing die. This avoids the irreversible consequences of damaging the mold surface of the door handle area of ​​the die at the beginning. This method, by eliminating the possibility that the fitting of other areas of the drawing die might affect the door handle area of ​​the product, allows the door handle forming area of ​​the drawing die to be fitted last, thus avoiding irreversible effects caused by insufficient die surface material. This eliminates surface defects, improves the surface quality of the parts, and ultimately meets customer satisfaction.

[0034] Meanwhile, if the above methods still cannot eliminate the surface defects in the door handle area, consider changing the way the sheet metal is fed—add feed ribs to the corresponding supplementary surface of the handle area, and make the sheet metal flow by changing the line length during the sheet metal forming process, thereby increasing the rigidity of the door handle area of ​​the part, thus eliminating surface defects and improving the surface quality of the part.

[0035] Specifically, after step S5, the following steps are also included in sequence:

[0036] S6. Use the extended die of the outer door panel after secondary grinding and mixing to make a sample part again, and apply blue oil coloring to the door handle area of ​​the sample part made in the third trial.

[0037] S7. Check whether the coloring of the door handle area of ​​the three trial samples is uniform. If the coloring is uniform, the surface quality and curvature of the door handle area of ​​the sample should be checked with an oilstone. If the surface quality is not up to standard, the defective area of ​​the sample should be identified with an oilstone. Then, add a feed rib to the corresponding supplementary surface of the door handle area. By changing the change in line length during the sheet forming process, the sheet material flows, increasing the rigidity of the door handle area of ​​the part, thereby eliminating the defects in the door handle forming area of ​​the drawing die.

[0038] In this embodiment, the feed rib is a semi-circular raised rib with a height of 3mm and a radius of 2.5mm.

[0039] The present invention has been described above in conjunction with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations made in accordance with the essence of the present invention.

Claims

1. A method for adjusting the door handle area of ​​a drawing die for an outer door panel, characterized in that, The steps are as follows: S1. Use an un-blended car door outer panel drawing die to make a sample part, and apply blue oil coloring to the door handle area of ​​the sample part. S2. Check if the coloring of the door handle area of ​​the sample is uniform. If the coloring is not uniform, use a grinding wheel to grind the defects in the door handle area of ​​the sample to eliminate the defects. S3. Apply blue oil coloring to other areas of the sample and check whether the coloring of other areas of the sample is uniform. If the coloring is not uniform, use the sample to grind and match other areas of the drawing die to eliminate defects in other areas of the drawing die. S4. Use the drawing die of the outer door panel after the first grinding and mixing to make a second sample part, and apply blue oil coloring to the door handle area of ​​the second sample part. S5. Check whether the coloring of the door handle area of ​​the second trial sample is uniform. If the coloring is not uniform, use the second trial sample to grind and fit the door handle forming area of ​​the drawing die to eliminate the defects in the door handle forming area of ​​the drawing die.

2. The method for adjusting the door handle area of ​​the drawing die for the outer panel of a car door according to claim 1, characterized in that, Following step S5, the following steps are also included in sequence: S6. Use the extended die of the outer door panel after secondary grinding and mixing to make a sample part again, and apply blue oil coloring to the door handle area of ​​the sample part made in the third trial. S7. Check whether the coloring of the door handle area of ​​the three trial samples is uniform. If the coloring is not uniform, add material feed ribs to the corresponding supplementary surface of the door handle area. By changing the line length change during the sheet forming process, the sheet material flows and the rigidity of the door handle area of ​​the part is increased, thereby eliminating the defects in the door handle forming area of ​​the drawing die.

3. The method for adjusting the door handle area of ​​the drawing die for the outer panel of a car door according to claim 2, characterized in that, The feed rib is a semi-circular raised rib with a height of 3mm and a radius of 2.5mm.

4. The method for adjusting the door handle area of ​​the drawing die for the outer panel of a car door according to claim 2 or 3, characterized in that, In steps S2, S3, S5 and S7, when checking whether the coloring of the trial sample is uniform, if the coloring is uniform, it is also necessary to use an oilstone to check whether the surface quality and curvature of the door handle area of ​​the sample are qualified. If the surface quality is not qualified, the defect area of ​​the sample is determined by using an oilstone.

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