CN111468887A - Four-piece type laser tailor-welded blank automobile skylight reinforcing frame manufacturing method and reinforcing frame thereof - Google Patents
Four-piece type laser tailor-welded blank automobile skylight reinforcing frame manufacturing method and reinforcing frame thereof Download PDFInfo
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- CN111468887A CN111468887A CN201910065631.4A CN201910065631A CN111468887A CN 111468887 A CN111468887 A CN 111468887A CN 201910065631 A CN201910065631 A CN 201910065631A CN 111468887 A CN111468887 A CN 111468887A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/26—Seam welding of rectilinear seams
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Abstract
The invention discloses a method for preparing a four-piece type laser tailor-welded blank automobile skylight reinforcing frame, which comprises the steps of firstly adopting four pieces of laser tailor-welded blanks and designing a parting during laser tailor-welding; selecting a sequence split welding process suitable for linear laser split welding equipment or a one-time split welding process suitable for curved laser split welding equipment according to laser welding equipment; forming four-piece type laser tailor-welded frame blanks; and finally, stamping and forming the four-piece type laser tailor-welded frame blank to form the automobile skylight reinforcing frame. The invention also discloses a four-piece type laser tailor-welded blank automobile skylight reinforcing frame. The invention improves the material utilization rate and reduces the material cost while realizing the light weight of the product.
Description
Technical Field
The invention relates to a technology for manufacturing an automobile skylight reinforcing frame, in particular to a method for manufacturing a four-piece type laser tailor-welded blank automobile skylight reinforcing frame and a reinforcing frame thereof.
Background
With the improvement of technology and the upgrade of consumption, the popularity of automobile-equipped skylights in China is rising year by year. The skylight has a great influence on the overall vehicle performance, and generally speaking, compared with a skylight plate and a non-skylight plate of the same vehicle type, the skylight plate has lower performance on the overall vehicle torsional rigidity, NVH, top pressure, snow pressure, outer plate dent resistance and other performances, so that the skylight plate is particularly important for the structure, thickness and material design of the skylight reinforcing frame.
The traditional automobile skylight reinforcing frame is of an integral structure formed by welding four stamping parts of a front cross beam, a rear cross beam, a left side beam and a right side beam or stamping and forming an integral blank, four stamping dies and one welding clamp are needed for the automobile skylight reinforcing frame formed by welding the four stamping parts, the tooling cost is high, and the processing procedure is long; the utilization rate of raw materials of the automobile skylight reinforcing frame formed by stamping an integral blank is only about 25%, and the phenomenon of raw material waste is serious.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a four-piece type laser tailor-welded blank automobile skylight reinforcing frame and a manufacturing method thereof, which can improve the material utilization rate and reduce the material cost while realizing the light weight of products.
In order to achieve the purpose, the invention adopts the following technical scheme:
on the one hand, the preparation method of the four-piece type laser tailor-welded blank automobile skylight reinforcing frame comprises the following steps:
firstly, four pieces of laser tailor-welded blanks are adopted, and the parting during laser tailor-welding is designed;
selecting a sequence tailor-welding process or a one-time tailor-welding process according to laser welding equipment;
the sequence-dividing tailor-welding process comprises the steps of respectively vertically laser tailor-welding a first laser tailor-welding blank and a second laser tailor-welding blank at two end parts of a third laser tailor-welding blank to form a U shape, finely shearing and leveling the end parts, which are not laser tailor-welded, of the first laser tailor-welding blank and the second laser tailor-welding blank by adopting fine shearing equipment, and laser tailor-welding a fourth laser tailor-welding blank on the end parts, which are finely sheared and leveled, of the first laser tailor-welding blank and the second laser tailor-welding blank to form a four-piece laser tailor-welding frame blank;
the one-time tailor-welding process comprises the steps of firstly positioning a first piece of laser tailor-welding blank by adopting a positioning tool, using the positioning tool as a reference, vertically and correspondingly arranging one end of a second piece of laser tailor-welding blank and one end of a third piece of laser tailor-welding blank at the two ends of the first piece of laser tailor-welding blank, positioning the two ends of the fourth piece of laser tailor-welding blank by the positioning tool, correspondingly arranging the two ends of the fourth piece of laser tailor-welding blank at the other ends of the second piece of laser tailor-welding blank and the other ends of the third piece of laser tailor-welding blank, positioning the two ends of the fourth piece of laser tailor-welding blank by the positioning tool;
and finally, stamping and forming the four-piece type laser tailor-welded frame blank to form the automobile skylight reinforcing frame.
The four laser tailor-welded blanks are respectively a front cross beam, a rear cross beam, a left side beam and a right side beam.
The parting design is as follows: the design of parting on the front cross beam and the rear cross beam or the design of parting on the left side beam and the right side beam.
The front cross beam, the rear cross beam, the left side beam and the right side beam are all right-angle laser tailor-welded blanks.
The front cross beam, the rear cross beam, the left side beam and the right side beam are all fillet laser tailor-welded blanks.
The sequence-dividing tailor-welding process is used for linear laser tailor-welding equipment.
The one-time tailor-welding process is used for curve laser tailor-welding equipment.
A positioning tool is adopted in the one-time tailor-welding process and comprises four electromagnets and positioning stop blocks.
When the joints of four pieces of laser tailor-welded blanks are subjected to laser tailor-welding in the sequence split welding process and the one-time tailor-welding process, welding is carried out at the starting end and the tail end of each welding joint in advance by 10 +/-1 mm and delayed by 10 +/-1 mm.
On the other hand, the four-piece type laser tailor-welded blank automobile skylight reinforcing frame is prepared by the four-piece type laser tailor-welded blank automobile skylight reinforcing frame preparation method.
In the technical scheme, the manufacturing method of the four-piece type laser tailor-welded blank automobile skylight reinforcing frame and the reinforcing frame thereof provided by the invention have the following beneficial effects:
1) the automobile skylight reinforcing frame is formed by stamping and forming four pieces of laser tailor-welded blanks into a frame blank, the material utilization rate can be increased from about 25% to about 40%, the material cost is reduced, and the light structure is realized by tailor-welding blanks with different thicknesses;
2) the manufacturing method of the four-piece type laser tailor-welded blank automobile skylight reinforcing frame is suitable for linear laser tailor-welding equipment and curve laser tailor-welding equipment;
3) the invention can effectively control the laser tailor-welding precision and quality and avoid the cracking of the four-piece laser tailor-welding frame blank due to stress concentration during stamping.
Drawings
FIG. 1 is a flow chart of a sequence tailor welding process according to the present invention;
FIG. 2 is a flow chart of a one-time tailor welding process according to the present invention;
FIG. 3 is a schematic view of the split design on the front and rear cross members of the present invention;
FIG. 4 is a schematic illustration of the split design on the left and right side rails of the present invention;
FIG. 5 is a schematic diagram of a sequence tailor-welding process when four blanks are rectangular blanks by using a right-angle laser tailor-welding blank design on a front cross beam and a rear cross beam;
FIG. 6 is a schematic diagram of a sequential tailor-welding process when the invention adopts a split design on a front beam and a rear beam, the front beam and the rear beam adopt rectangular blanks, and the left beam and the right beam adopt fillet laser tailor-welding blanks with arc-shaped blanks at the corners;
FIG. 7 is a schematic diagram of a sequence-dividing tailor-welding process when four blanks are rectangular blanks by adopting a right-angle laser tailor-welding blank in a seam-dividing design on a left side beam and a right side beam;
FIG. 8 is a schematic diagram of a sequential tailor-welding process when the present invention adopts a split design on a left side beam and a right side beam, the left and right side beams adopt rectangular blanks, and the front and rear cross beams adopt fillet laser tailor-welding blanks with circular arc-shaped blanks at the corners.
Detailed Description
The technical scheme of the invention is further explained by combining the drawings and the embodiment.
Referring to fig. 1 to 2, a method for manufacturing a reinforcing frame of a four-piece laser tailor-welded blank for an automobile sunroof provided by the present invention includes:
four laser tailor-welded blanks are adopted firstly, and parting during laser tailor-welding is designed, high-strength thinning is carried out, so that various performance requirements of products are met, meanwhile, the material utilization rate is greatly improved, the material cost is reduced, and the structure light weight is realized. The four laser tailor-welded blanks are respectively a front beam 1, a rear beam 2, a left beam 4 and a right beam 3.
As shown in fig. 3, the reinforcing frame structure for the sunroof is formed by parting a front cross member 1 and a rear cross member 2, and is designed by parting mainly to meet the use performance requirements of the sunroof.
As shown in fig. 4, the sunroof reinforcing frame structure is formed by slitting the left side member 4 and the right side member 3, and is designed to satisfy the requirements of lightweight sunroof and low cost.
In order to ensure the processing precision and quality of the four laser tailor-welded blanks, a sequence tailor-welding process suitable for linear laser tailor-welding equipment and a one-time tailor-welding process suitable for curved laser tailor-welding equipment are provided according to the laser tailor-welding equipment.
Preferably, the sequence split welding process comprises the steps of enabling the upper ends of laser split welding blanks of the front cross beam 1 and the rear cross beam 2 to be respectively perpendicular to the two end portions of the laser split welding blanks of the right side beam 3 in a laser split welding mode to form a U shape, adopting fine shearing equipment to finely shear and flush the lower ends of the laser split welding blanks of the front cross beam 1 and the rear cross beam 2 to ensure straightness required by the laser split welding, and enabling the laser split welding blanks of the left side beam 4 to be laser split welded on the lower ends of the laser split welding blanks of the front cross beam 1 and the rear cross beam 2, so that a four-piece laser split welding frame blank is formed.
Preferably, the one-time tailor-welding process comprises the steps of adopting a positioning tool consisting of four electromagnets and positioning stop blocks on the premise of ensuring the welding edge precision of four laser tailor-welding blanks, firstly placing the laser tailor-welding blanks of the right side beam 3 on the corresponding electromagnets, assisting the positioning by the positioning stop blocks, and then taking the laser tailor-welded blank of the right side beam 3 as a reference, vertically arranging one end of the laser tailor-welded blank of the front cross beam 1 and the rear cross beam 2 at two ends of the laser tailor-welded blank of the right side beam 3 through electromagnets and positioning through positioning stop blocks to form a U shape, arranging two ends of the laser tailor-welded blank of the left side beam 4 at the other ends of the laser tailor-welded blank of the front cross beam 1 and the rear cross beam 2 through electromagnets and positioning through the positioning stop blocks, and finally performing laser tailor-welding on seams of the four laser tailor-welded blanks at one time to form the four-piece laser tailor-welded frame blank.
Preferably, the sequence split welding process and the one-time split welding process are carried out at the starting end and the tail end of each welding line by advancing by 10 +/-1 mm and delaying by 10 +/-1 mm, so that the end welding quality is ensured.
And finally, stamping and forming the four-piece type laser tailor-welded frame blank to form the automobile skylight reinforcing frame, so that the integral stamping and forming requirements of the automobile skylight reinforcing frame are met.
As shown in fig. 5, the blank is a laser tailor welded blank of the reinforcing frame structure of the sunroof which is split on the front cross member 1 and the rear cross member 2. In consideration of low cost, it is preferable that the front cross member 1, the rear cross member 2, the left side member 4, and the right side member 5 be rectangular laser tailor-welded blanks. However, when the four-piece laser tailor-welded frame blank is cracked at the right angle position during laser tailor-welded stamping, as shown in fig. 6, both the left beam 4 and the right beam 3 can be fillet laser tailor-welded blanks with circular arc-shaped blanks at the corners.
As shown in fig. 7, the blank is a laser tailor welded blank of the reinforcing frame structure of the sunroof which is slit on the left side member 4 and the right side member 3. In consideration of low cost, it is preferable that the front cross member 1, the rear cross member 2, the left side member 4, and the right side member 5 be rectangular laser tailor-welded blanks. However, when the four-piece laser tailor-welded frame blank is cracked at the right angle position during laser tailor-welded stamping, the front beam 1 and the rear beam 2 shown in fig. 8 may be fillet laser tailor-welded blanks with circular arc-shaped blanks at the corners.
The invention also provides a four-piece type laser tailor-welded blank automobile skylight reinforcing frame which is prepared by the four-piece type laser tailor-welded blank automobile skylight reinforcing frame preparation method.
In conclusion, the advantages of the laser tailor-welded blank are mainly considered, the panels with different materials, different thicknesses and different surface states can be spliced together, the automobile skylight reinforcing frame is formed by stamping the four-piece laser tailor-welded blank, and the four pieces of the panels with different materials, different thicknesses and different surface states can meet various service performance requirements of products, so that the material utilization rate is greatly improved, the material cost is reduced, and the structure is light. The four-piece laser tailor-welded blank processing method can ensure the processing precision and quality of the four-piece laser tailor-welded blank, is easy to realize in production, has obvious economic effect, can realize the light weight of the automobile body, and is energy-saving and environment-friendly.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (10)
1. A preparation method of a four-piece type laser tailor-welded blank automobile skylight reinforcing frame is characterized by comprising the following steps of:
firstly, four pieces of laser tailor-welded blanks are adopted, and the parting during laser tailor-welding is designed;
selecting a sequence tailor-welding process or a one-time tailor-welding process according to laser welding equipment;
the sequence-dividing tailor-welding process comprises the steps of respectively vertically laser tailor-welding a first laser tailor-welding blank and a second laser tailor-welding blank at two end parts of a third laser tailor-welding blank to form a U shape, finely shearing and leveling the end parts, which are not laser tailor-welded, of the first laser tailor-welding blank and the second laser tailor-welding blank by adopting fine shearing equipment, and laser tailor-welding a fourth laser tailor-welding blank on the end parts, which are finely sheared and leveled, of the first laser tailor-welding blank and the second laser tailor-welding blank to form a four-piece laser tailor-welding frame blank;
the one-time tailor-welding process comprises the steps of firstly positioning a first piece of laser tailor-welding blank by adopting a positioning tool, using the positioning tool as a reference, vertically and correspondingly arranging one end of a second piece of laser tailor-welding blank and one end of a third piece of laser tailor-welding blank at the two ends of the first piece of laser tailor-welding blank, positioning the two ends of the fourth piece of laser tailor-welding blank by the positioning tool, correspondingly arranging the two ends of the fourth piece of laser tailor-welding blank at the other ends of the second piece of laser tailor-welding blank and the other ends of the third piece of laser tailor-welding blank, positioning the two ends of the fourth piece of laser tailor-welding blank by the positioning tool;
and finally, stamping and forming the four-piece type laser tailor-welded frame blank to form the automobile skylight reinforcing frame.
2. The method for manufacturing the four-piece type laser tailor-welded blank automobile skylight reinforcing frame according to claim 1, characterized in that: the four laser tailor-welded blanks are respectively a front cross beam, a rear cross beam, a left side beam and a right side beam.
3. The method for manufacturing the four-piece type laser tailor-welded blank automobile skylight reinforcing frame according to claim 2, characterized in that: the parting design is as follows: the design of parting on the front cross beam and the rear cross beam or the design of parting on the left side beam and the right side beam.
4. The method for manufacturing the four-piece type laser tailor-welded blank automobile skylight reinforcing frame according to claim 2, characterized in that: the front cross beam, the rear cross beam, the left side beam and the right side beam are all right-angle laser tailor-welded blanks.
5. The method for manufacturing the four-piece type laser tailor-welded blank automobile skylight reinforcing frame according to claim 2, characterized in that: the front cross beam, the rear cross beam, the left side beam and the right side beam are all fillet laser tailor-welded blanks.
6. The method for manufacturing the four-piece type laser tailor-welded blank automobile skylight reinforcing frame according to claim 1, characterized in that: the sequence-dividing tailor-welding process is used for linear laser tailor-welding equipment.
7. The method for manufacturing the four-piece type laser tailor-welded blank automobile skylight reinforcing frame according to claim 1, characterized in that: the one-time tailor-welding process is used for curve laser tailor-welding equipment.
8. The method for manufacturing the four-piece type laser tailor-welded blank automobile skylight reinforcing frame according to claim 1, characterized in that: a positioning tool is adopted in the one-time tailor-welding process and comprises four electromagnets and positioning stop blocks.
9. The method for manufacturing the four-piece type laser tailor-welded blank automobile skylight reinforcing frame according to claim 1, characterized in that: when the joints of four pieces of laser tailor-welded blanks are subjected to laser tailor-welding in the sequence split welding process and the one-time tailor-welding process, welding is carried out at the starting end and the tail end of each welding joint in advance by 10 +/-1 mm and delayed by 10 +/-1 mm.
10. A four-piece laser tailor welded automotive sunroof reinforcing frame according to any one of claims 1 to 9, wherein: the four-piece type laser tailor-welded blank automobile skylight reinforcing frame is prepared by the four-piece type laser tailor-welded blank automobile skylight reinforcing frame preparation method.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910065631.4A CN111468887A (en) | 2019-01-23 | 2019-01-23 | Four-piece type laser tailor-welded blank automobile skylight reinforcing frame manufacturing method and reinforcing frame thereof |
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| CN201910065631.4A CN111468887A (en) | 2019-01-23 | 2019-01-23 | Four-piece type laser tailor-welded blank automobile skylight reinforcing frame manufacturing method and reinforcing frame thereof |
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| CN111468887A true CN111468887A (en) | 2020-07-31 |
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| CN201910065631.4A Pending CN111468887A (en) | 2019-01-23 | 2019-01-23 | Four-piece type laser tailor-welded blank automobile skylight reinforcing frame manufacturing method and reinforcing frame thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113210864A (en) * | 2021-05-28 | 2021-08-06 | 东风柳州汽车有限公司 | Laser tailor-welding blank for reinforcing frame of automobile skylight and manufacturing method |
| CN116787053A (en) * | 2023-06-28 | 2023-09-22 | 武汉宁致远汽车配件有限公司 | Flexible deflection clamp and welding process based on same |
-
2019
- 2019-01-23 CN CN201910065631.4A patent/CN111468887A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113210864A (en) * | 2021-05-28 | 2021-08-06 | 东风柳州汽车有限公司 | Laser tailor-welding blank for reinforcing frame of automobile skylight and manufacturing method |
| CN116787053A (en) * | 2023-06-28 | 2023-09-22 | 武汉宁致远汽车配件有限公司 | Flexible deflection clamp and welding process based on same |
| CN116787053B (en) * | 2023-06-28 | 2024-05-14 | 武汉宁致远汽车配件有限公司 | Flexible deflection clamp and welding process based on same |
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Application publication date: 20200731 |