CN104439733A - Welding method of lower vehicle body - Google Patents

Welding method of lower vehicle body Download PDF

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Publication number
CN104439733A
CN104439733A CN201310421875.4A CN201310421875A CN104439733A CN 104439733 A CN104439733 A CN 104439733A CN 201310421875 A CN201310421875 A CN 201310421875A CN 104439733 A CN104439733 A CN 104439733A
Authority
CN
China
Prior art keywords
assembly
welding
floor
fixture
longitudinal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201310421875.4A
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Chinese (zh)
Inventor
王明正
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beiqi Foton Motor Co Ltd
Original Assignee
Beiqi Foton Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beiqi Foton Motor Co Ltd filed Critical Beiqi Foton Motor Co Ltd
Priority to CN201310421875.4A priority Critical patent/CN104439733A/en
Publication of CN104439733A publication Critical patent/CN104439733A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00Articles made by soldering, welding or cutting
    • B23K2101/006Vehicles

Abstract

The invention discloses a welding method of a lower vehicle body. The welding method comprises the following steps: (A) a left front longitudinal beam assembly, a right front longitudinal beam assembly and a front floor assembly are provided; and the positioned welding is performed for the left front longitudinal beam assembly, the right front longitudinal beam assembly and the front floor assembly on a first fixture to form a front floor-longitudinal beam assembly; and (B) a back floor assembly is provided; and the positioned welding is performed for the back floor assembly and the front floor-longitudinal beam assembly on a second fixture to form the lower vehicle body. According to the welding method of the lower vehicle body, through the two-fixture positioned welding mode, the complexity of the fixtures for collinear production of multiple vehicle types is effectively reduced, the process and equipment complexity is reduced, and a certain effect on the vehicle body product quality is achieved.

Description

The welding method of automobile under body
Technical field
The present invention relates to field of automobile, particularly relate to a kind of welding method of automobile under body.
Background technology
In view of the continuous lifting of auto Production Capacity, so the beat increase of automotive body welding just seems very important; Simultaneously because the vehicle body platform type of automobile is varied, so automobile body welding equipment is just necessarily required to be flexible in order to reduce manufacturing cost, the especially positioning welding equipment of under body.
Usually, under body sub-unit is formed by left front girder assembly, front right longitudinal beam assembly, front floor assembly and rear floor assembly welding, so this welding adopts manual operation just to deviate from a little with automobile industry development, the welding quality of under body sub-unit also cannot ensure stable unified simultaneously, and therefore automatic welding form comparatively generally adopts a kind of method.
Prior art is that together with left front girder assembly, front right longitudinal beam assembly, front floor assembly and rear floor assembly are passed through, positioning welding operation realizes.
Realize the specific embodiments of above-mentioned technical process: by glue pump to left front girder assembly and the applying glue of front right longitudinal beam assembly, be then put on pipeline, robot is positioned on fixture by handgrip crawl left front girder assembly and front right longitudinal beam assembly and locates; Another front floor assembly precision bin and rear floor assembly precision bin fixation are in robot crawl position, and then robot is put in order on fixture by floor assembly and front floor assembly after handgrip crawl and locates.Can find out that left front girder assembly and front right longitudinal beam assembly, rear floor assembly and front floor assembly are welded into that the process of under body sub-unit just completed by a procedure from upper crack approach, and the process being put into fixture also realizes in order, this process inevitably occupies part weld interval.
After meeting the flexible fixture clamping of multi-vehicle-type location, the part tack weld of robot welding under body sub-unit, after welding, fixture is opened, and robot captures under body sub-unit by handgrip and is put on lift, and this operating area is left in final conveying.
The disadvantage of prior art is exactly cannot realize enough tack weld welding as the tack welding station of under body sub-unit, and the most basic reason that this kind of phenomenon occurs is exactly in a work cycle, had too much upper time.
Under the condition of multi-vehicle-type mixed production, owing to only having the locational space of a unit fixture, think the location just needs switching part fixture unit meeting multi-vehicle-type, which results in the complexity of fixture, simultaneously also can the increase of causing trouble.
Because the glue-spread of left front girder assembly, front right longitudinal beam assembly and front floor assembly is larger, so a robot cannot complete grip, gluing and put the one-cycle process of part in fixing beat, therefore adopt artificial to left front girder assembly and front right longitudinal beam assembly applying glue (extra increase equipment is no longer analyzed), add the risk of gluing Quality Down.Operator is many, adds long-term production operation cost.
Summary of the invention
The present invention is intended to one of solve the problems of the technologies described above at least to a certain extent.
For this reason, one object of the present invention is the welding method proposing a kind of automobile under body.
According to the welding method of the automobile under body of the embodiment of the present invention, comprise the following steps: A, provide left front girder assembly, front right longitudinal beam assembly and front floor assembly, on the first fixture to described left front girder assembly, described front right longitudinal beam assembly and described front floor assembly location welding to form front floor-longeron assembly; With B, provide rear floor assembly, the second fixture positions welding to form described automobile under body to described rear floor assembly and described front floor-longeron assembly.
According to the welding method of the automobile under body of the embodiment of the present invention, the mode of two fixture tack weldings is adopted to significantly reduce the complexity of the fixture required for multi-vehicle-type mixed production, reduce the complexity of technology and equipment, guarantee vehicle body product quality is also played to having certain effect.
In addition, the welding method of automobile under body according to the above embodiment of the present invention can also have following additional technical characteristic:
According to an example of the present invention, be also included in the step to carrying out applying glue before described front floor assembly location in step.
According to an example of the present invention, be also included in the step to carrying out applying glue before described rear floor assembly location in stepb.
According to an example of the present invention, described first fixture and described second fixture are flexible fixture.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the schematic flow sheet of the welding method of automobile under body according to the embodiment of the present invention.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is less than second feature.
Below with reference to the accompanying drawings the welding method of the automobile under body according to the embodiment of the present invention is described in detail.
As shown in Figure 1, according to the welding method of the automobile under body of the embodiment of the present invention, comprise the following steps:
A, provide left front girder assembly, front right longitudinal beam assembly and front floor assembly, on the first fixture to described left front girder assembly, described front right longitudinal beam assembly and described front floor assembly location welding to form front floor-longeron assembly.
B, provide rear floor assembly, the second fixture positions welding to form described automobile under body to described rear floor assembly and described front floor-longeron assembly.
According to the welding method of the automobile under body of the embodiment of the present invention, adopt the mode of two fixture tack weldings, significantly reduce the complexity of the fixture required for multi-vehicle-type mixed production, reduce the complexity of technology and equipment, guarantee vehicle body product quality is also played to having certain effect.
According to an example of the present invention, be also included in the step to carrying out applying glue before described front floor assembly location in step.
According to an example of the present invention, be also included in the step to carrying out applying glue before described rear floor assembly location in stepb.
According to an example of the present invention, described first fixture and described second fixture are flexible fixture.
That is, according to the welding method of the automobile under body of the embodiment of the present invention, first fixture is located left front girder assembly, front right longitudinal beam assembly and front floor assembly and floor-longeron assembly before being welded into, the second fixture is located front floor-longeron assembly and rear floor assembly and is welded into automobile under body.
The concrete scheme realizing above-mentioned technical process is as follows:
From bin, get left front girder assembly and front right longitudinal beam assembly respectively and be put on pipeline, robot captures left front girder assembly and front right longitudinal beam assembly by handgrip and is positioned on the first fixture and locates; Front floor assembly fixation in robot crawl position, then robot captures front floor assembly applying glue on automatic adhesive application system by handgrip, is finally put on the first fixture and locates.The welding of front floor-longeron assembly is completed by robot.
Robot captures rear floor assembly by handgrip from bin, and by automatic adhesive application system applying glue, is finally positioned on the second fixture and locates.Above-mentioned front floor-longeron assembly is captured by robot by handgrip and is put on the second fixture and locates.The welding of automobile under body is completed by robot.
After the welding of automobile under body, the second fixture is opened, and robot captures automobile under body assembly by handgrip and is put on lift, and weld job region is left in final conveying.
In other words, the welding of front floor-longeron assembly and the welding of automobile under body are carried out respectively, when the pipelining time is constant, add the time of weld job.Be less than prior art in upper the operation of tack welding station, so effective weld interval is guaranteed, namely ensure that necessary productive temp.In addition, adopt the mode of two tack weldings to significantly reduce the complexity of the flexible locating cramping apparatus required for multi-vehicle-type mixed production, namely decrease the frequency that fault occurs.3rd, the operating personnel of hinge structure reduce, thus reduce the long-term operation cost of production, simultaneously owing to adopting the welding quality of automatically producing and ensure that under body sub-unit.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention when not departing from principle of the present invention and aim, revising, replacing and modification.

Claims (4)

1. a welding method for automobile under body, is characterized in that, comprises the following steps:
A, provide left front girder assembly, front right longitudinal beam assembly and front floor assembly, on the first fixture to described left front girder assembly, described front right longitudinal beam assembly and described front floor assembly location welding to form front floor-longeron assembly; With
B, provide rear floor assembly, the second fixture positions welding to form described automobile under body to described rear floor assembly and described front floor-longeron assembly.
2. the welding method of automobile under body according to claim 1, is characterized in that, is also included in the step to carrying out applying glue before described front floor assembly location in step.
3. the welding method of automobile under body according to claim 1, is characterized in that, is also included in the step to carrying out applying glue before described rear floor assembly location in stepb.
4. the welding method of automobile under body according to claim 1, is characterized in that, described first fixture and described second fixture are flexible fixture.
CN201310421875.4A 2013-09-16 2013-09-16 Welding method of lower vehicle body Pending CN104439733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310421875.4A CN104439733A (en) 2013-09-16 2013-09-16 Welding method of lower vehicle body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310421875.4A CN104439733A (en) 2013-09-16 2013-09-16 Welding method of lower vehicle body

Publications (1)

Publication Number Publication Date
CN104439733A true CN104439733A (en) 2015-03-25

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106735985A (en) * 2016-12-20 2017-05-31 柳州振业焊接机电设备制造有限公司 The welding method of body of a motor car
CN109014638A (en) * 2018-08-20 2018-12-18 北京长城华冠汽车科技股份有限公司 The welding method of frame-type car body of aluminum alloy assembly
CN111283355A (en) * 2018-12-07 2020-06-16 宝沃汽车(中国)有限公司 Vehicle body lower assembly splicing system, vehicle type switching method and splicing process

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201073725Y (en) * 2007-08-16 2008-06-18 东风汽车有限公司 Flexible welding cramping apparatus for vehicle body preproduction floor assembly
CN101224767A (en) * 2008-02-01 2008-07-23 中国重汽集团济南技术中心有限公司 Main assembling and welding process of heavy truck driving body without launders on two sides
CN101502920A (en) * 2008-12-12 2009-08-12 郑州日产汽车有限公司 Technique for total assembly of side round of vehicle body weld line body
CN102601535A (en) * 2012-03-13 2012-07-25 广州永日电梯有限公司 Welding method for car bottom of elevator based on welding robot
CN102717196A (en) * 2012-05-24 2012-10-10 中国重汽集团成都王牌商用车有限公司 Method for welding cab of vehicle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201073725Y (en) * 2007-08-16 2008-06-18 东风汽车有限公司 Flexible welding cramping apparatus for vehicle body preproduction floor assembly
CN101224767A (en) * 2008-02-01 2008-07-23 中国重汽集团济南技术中心有限公司 Main assembling and welding process of heavy truck driving body without launders on two sides
CN101502920A (en) * 2008-12-12 2009-08-12 郑州日产汽车有限公司 Technique for total assembly of side round of vehicle body weld line body
CN102601535A (en) * 2012-03-13 2012-07-25 广州永日电梯有限公司 Welding method for car bottom of elevator based on welding robot
CN102717196A (en) * 2012-05-24 2012-10-10 中国重汽集团成都王牌商用车有限公司 Method for welding cab of vehicle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106735985A (en) * 2016-12-20 2017-05-31 柳州振业焊接机电设备制造有限公司 The welding method of body of a motor car
CN109014638A (en) * 2018-08-20 2018-12-18 北京长城华冠汽车科技股份有限公司 The welding method of frame-type car body of aluminum alloy assembly
CN109014638B (en) * 2018-08-20 2021-01-22 北京长城华冠汽车科技股份有限公司 Welding method of frame type aluminum alloy vehicle body assembly
CN111283355A (en) * 2018-12-07 2020-06-16 宝沃汽车(中国)有限公司 Vehicle body lower assembly splicing system, vehicle type switching method and splicing process

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Application publication date: 20150325