阅读说明：本技术 一种软模试制车身螺钉植焊方法 (Soft mold trial-made vehicle body screw embedding and welding method ) 是由 闫建姬 张永仁 王新坤 于 2021-08-02 设计创作，主要内容包括：本发明公开了一种软模试制车身螺钉植焊方法,涉及钣金焊接技术领域,解决了现有焊接定位技术成本高、效率低的问题,方法包括：创建钣金三维模型；在钣金三维模型上创建植焊标记槽,植焊标记槽的深度小于钣金件的厚度；依据三维模型制作钣金件,在钣金件上加工出植焊标记槽；将螺钉对准植焊标记槽后,执行焊接操作。本发明有利于焊接者对焊接点进行观察和快速对准,提升螺钉定位和焊接的效率,且加工植焊标记槽的成本低。(The invention discloses a soft die trial-made vehicle body screw embedding welding method, relates to the technical field of sheet metal welding, and solves the problems of high cost and low efficiency of the existing welding positioning technology, and the method comprises the following steps: creating a metal plate three-dimensional model; establishing an implantation welding marking groove on the metal plate three-dimensional model, wherein the depth of the implantation welding marking groove is smaller than the thickness of a metal plate part; manufacturing a sheet metal part according to the three-dimensional model, and processing an implantation welding mark groove on the sheet metal part; and after the screw is aligned with the implantation welding mark groove, performing welding operation. The invention is beneficial to the observation and the rapid alignment of the welding point by a welder, improves the efficiency of positioning and welding the screw and has low cost for processing the embedded welding mark groove.)

1. A soft mold trial-manufacture vehicle body screw embedding welding method is characterized by comprising the following steps:

establishing a metal plate three-dimensional model through three-dimensional software;

creating an implantation welding marking groove on the sheet metal three-dimensional model, wherein the depth of the implantation welding marking groove is smaller than the thickness of the sheet metal part;

manufacturing a sheet metal part according to the three-dimensional model, and processing the implantation welding mark groove on the sheet metal part;

and after the screw is aligned to the implantation welding mark groove, performing welding operation.

2. The method for fillet welding of soft mold trial body screws according to claim 1, wherein the fillet welding mark groove is circular.

3. The soft-mold trial body screw tacking method as claimed in claim 2, wherein an inner ring diameter of the tacking mark groove is not more than 1.1 times the screw diameter.

4. The soft-mold trial body screw tacking method as claimed in claim 3, wherein the inner ring diameter of the tacking mark groove is equal to the diameter of the screw.

5. The soft mold trial body screw tacking method as claimed in claim 4, wherein the groove width of the tacking mark groove is 1 mm.

6. The soft mold trial body screw tacking method as claimed in claim 1, wherein the groove depth of the tacking mark groove is 0.1 mm.

7. The soft mold trial body screw implant welding method according to claim 1, wherein in the step of manufacturing a sheet metal part according to the three-dimensional model and machining the implant welding mark groove on the sheet metal part, the implant welding mark groove is engraved using a laser device that cuts the sheet metal part.

8. The soft mold trial body screw tacking method as claimed in claim 1, wherein in the step of aligning the tacking screw to the tacking mark groove, an outer edge of an end face of the screw is aligned with the tacking mark groove inner ring until the observed groove width around the tacking mark groove around the screw is uniform.

9. The soft-mold trial body screw tacking method as claimed in claim 1, wherein said welding operation comprises melting said screw to connect said screw with a tacking mark groove.

10. The soft-mold trial body screw tacking method as claimed in claim 9, wherein the welding operation is performed using a stud gun.

Technical Field

The invention relates to the technical field of screw welding, in particular to a soft mold trial-manufacture vehicle body screw welding method.

Background

Generally, the following two schemes are adopted for positioning the welding screws of the body-in-white: scheme 1: developing a stud welding fixture, arranging stud welding gun positioning guide on the fixture to realize stud positioning, and mostly applying the stud welding fixture in the mass production process; scheme 2: and manufacturing a positioning clamping plate, placing the positioning clamping plate on the part, marking the position of the stud by using a marking pen, and aligning a welding gun to the position of the marked stud for welding when the stud is welded. The clamp used in the scheme 1 has high development cost, large occupied area and long assembly time during use; the method used by the scheme 2 needs to manufacture a large number of copying clamping plates with different shapes so as to cover the positions, needing to be welded with screws, on the body-in-white, the die sinking cost is high, and the time spent in use is even longer than that of the scheme 1.

Disclosure of Invention

The invention aims to provide a soft mold trial-manufacture vehicle body screw implanting welding method, which aims to solve the problems of high implanting welding cost and low efficiency of the conventional white vehicle body screw in the background technology.

In order to achieve the above purpose, the technical scheme of the invention is as follows:

a soft mold trial-manufacture vehicle body screw embedding welding method comprises the following steps:

establishing a metal plate three-dimensional model through three-dimensional software;

creating an implantation welding marking groove on the sheet metal three-dimensional model, wherein the depth of the implantation welding marking groove is smaller than the thickness of the sheet metal part;

manufacturing a sheet metal part according to the three-dimensional model, and processing the implantation welding mark groove on the sheet metal part;

and after the screw is aligned to the implantation welding mark groove, performing welding operation.

Preferably, the tack welding marking groove is annular.

Preferably, the inner ring diameter of the implant welding marker groove is not more than 1.1 times the screw diameter.

Preferably, the inner ring diameter of the implant welding marker groove is equal to the diameter of the screw.

Preferably, the groove width of the implantation welding mark groove is 1 mm.

Preferably, the groove depth of the implantation welding mark groove is 0.1 mm.

Preferably, in the step of manufacturing the sheet metal part according to the three-dimensional model and processing the welding mark groove on the sheet metal part, the welding mark groove is engraved by using a laser device for cutting the sheet metal part.

Preferably, in the step of aligning the welding screw with the welding mark groove, the outer edge of the end face of the screw is aligned with the inner ring of the welding mark groove until the observed groove width around the welding mark groove around the screw is uniform.

Preferably, the welding operation includes melting the screw to connect the screw with the implant mark groove.

Preferably, the welding operation is performed using a stud welding gun.

The invention has the beneficial effects that:

according to the technical scheme, the screw welding method disclosed by the invention has the advantages that the three-dimensional model of the metal plate is created through the three-dimensional software, the welding mark groove is created at the position where the screw needs to be welded, the welding mark groove has depth, namely the welding mark groove is a non-planar mark and has obvious brightness and darkness, so that a welder can observe and quickly align a welding point, the screw positioning and welding efficiency is improved, and the cost for machining the welding mark groove is low;

the depth of planting and welding the mark groove is less than the thickness of sheet metal component and then avoids the mark point to cause the influence to the performance and the structure of panel beating, and the screw is planted and is welded the in-process, and the terminal surface melting of screw, metal after the melting will not imbed and welds the mark groove, and planting after filling welds the mark groove and does not have the influence to sheet metal component performance, still can reduce the welding vestige, makes sheet metal component and screw plant and weld the surface more level and more smooth, reduces the process of polishing.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic flow chart of an embodiment of the present invention;

fig. 2 is a schematic view of the implantation welding according to the embodiment of the invention.

The labels in the figure are: 1-sheet metal part, 2-embedding welding mark groove and 3-screw.

Detailed Description

The technical solutions in the present embodiments will be clearly and completely described below with reference to the accompanying drawings in the present embodiments, which, however, should not be construed as limiting the invention to specific embodiments, but are for explanation and understanding only:

fig. 1 is a schematic flow chart of an embodiment of the present invention, and fig. 2 is a schematic implantation welding diagram of the embodiment of the present invention. As shown in fig. 1, the present embodiment provides a soft mold trial vehicle body screw welding method, which includes the following steps:

step 1: and creating a metal plate three-dimensional model through three-dimensional software.

Step 2: and creating an implantation welding marking groove 2 on the sheet metal three-dimensional model, wherein the depth of the implantation welding marking groove 2 is smaller than the thickness of the sheet metal part.

And step 3: and manufacturing a sheet metal part according to the three-dimensional model, and processing the implant welding mark groove 2 on the sheet metal part.

And 4, step 4: after aligning the screws with the welding mark grooves 2, a welding operation is performed.

Through three-dimensional software, a three-dimensional model of the metal plate is created, and the welding mark groove 2 is created at the position where the welding screw 3 needs to be welded, wherein the welding mark groove 2 has a depth, namely the welding mark groove 2 is a non-planar mark, which is beneficial for a welder to observe and quickly align a welding point.

The depth of planting and welding mark groove 2 is less than the thickness of sheet metal component 1 and then avoids the mark point to cause the influence to the performance and the structure of panel beating, and 3 plant of screws weld the in-process, and the terminal surface melting of screw 3, the metal after the melting will not imbed and welds mark groove 2, and planting after filling welds mark groove 2 and does not have the influence to sheet metal component 1 performance, still can reduce the welding vestige, makes sheet metal component 1 and 3 plant the welding surface more level and more smooth with the screw, reduces the process of polishing.

And comparing the three-dimensional models of the metal plates, and processing an implantation welding mark groove 2 on the manufactured metal plate part 1.

The processed sheet metal part 1 is transported to the next workshop for welding operation, when the welding mark groove 2 is circular, if the diameter of the welding mark groove 2 is larger than or equal to the diameter of the screw 3, when the screw 3 is positioned, the screw 3 is directly placed into the welding mark groove 2, and if the diameter of the welding mark groove 2 is smaller than the diameter of the screw 3, the end face of the screw 3 covers the welding mark groove 2 until an operator cannot observe the edge of the welding mark groove 2. When the implant welding mark groove 2 is rectangular, if the width of the rectangular groove is not less than the diameter of the screw 3, the screw 3 can be directly inserted into the implant welding mark groove 2 to realize the positioning of the screw 3, and if the width of the rectangular groove is less than the diameter of the screw 3, when the two opposite sides on the end surface of the screw 3 are in contact with the surface of the sheet metal part 1 around the rectangular groove, the positioning of the screw 3 is realized.

After the positioning is finished, the welding operation can be carried out, the screws 3 are implanted and welded on the sheet metal part 1, and the stud welding gun can be used for carrying out the welding operation in the embodiment.

Through utilizing current device to process out on sheet metal component 1 and plant and weld mark groove 2, need not secondary operation, plant and weld the machining precision height, the position error of mark groove 2 little, can effectively promote the precision when planting and welding screw 3.

The embodiment specifically includes the following contents:

referring to fig. 2, plant and weld mark groove 2 and be the ring form, the panel beating of ring central part promptly is located the coplanar with the panel beating of ring outside, plants the degree of depth of welding mark groove 2 and can not cause the influence to the height after the screw 3 welds, and the required process time of the ring type plant welding mark groove 2 still less.

The diameter of the inner ring of the implant welding mark groove 2 is equal to the diameter of the screw 3, the end face of the screw 3 is melted during welding, the melted metal is immersed into the annular implant welding mark groove 2, the connection area of the screw 3 and the sheet metal part 1 is increased, and the screw 3 and the sheet metal part 1 are connected more stably. And the diameter of the inner ring is equal to that of the screw 3, in step 4, the outer edge of the end face of the screw 3 is aligned with the inner ring of the implant welding mark groove 2 until the observed groove width around the implant welding mark groove 2 around the screw 3 is uniform, and then the positioning of the screw 3 is completed. If the screw 3 is dislocated compared with the welding mark groove 2, the screw can be easily observed and adjusted, so that the accuracy of welding the alignment screw 3 and the welding mark groove 2 is higher.

More specifically, as an implementation mode, the diameter of the inner ring of the implantation welding mark groove 2 is not more than 1.1 times of the diameter of the screw 3, so as to improve the accuracy in positioning, and further, the groove width of the implantation welding mark groove 2 is 1mm, the width is moderate, the visibility is good, and the welding alignment is convenient.

The thickness of the panel beating that the white automobile body used is many in 0.75mm to 1 mm's interval, from this, plant in this implementation and weld mark groove 2's groove depth and be 0.1mm, plant and weld mark groove 2 groove depth and the ratio of panel beating thickness and be less than 0.15, it is less to the influence of panel beating to make to plant and weld mark groove 2, and 0.1 mm's degree of depth also is filled by the molten metal when planting the welding easily, on the basis of increase screw 3 and sheet metal component 1 welding area, can not make the influence to the performance of panel beating.

In-process of processing production white automobile body sheet metal component 1, including punching press process and laser cutting hole process, the laser cutting that the laser cutting hole process used cuts sheet metal component 1 according to three-dimensional software's modeling data, at the preparation sheet metal component 1 in-process according to three-dimensional model, use laser beam machining to plant and weld mark groove 2, plant to weld mark groove 2 promptly and also through laser cutting machine processing, utilize current device to realize the processing to weld mark groove 2, low cost, and plant to weld mark groove 2 and along with sheet metal component 1 other incisions together processing completion, the accuracy of processing is high.

It is to be understood that the above examples are merely illustrative for clarity of description and are not limiting on the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.