CN106799554B - Special welding jig system of air spring type full-load frame assembly - Google Patents

Special welding jig system of air spring type full-load frame assembly Download PDF

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Publication number
CN106799554B
CN106799554B CN201510836990.7A CN201510836990A CN106799554B CN 106799554 B CN106799554 B CN 106799554B CN 201510836990 A CN201510836990 A CN 201510836990A CN 106799554 B CN106799554 B CN 106799554B
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frame
positioning
welding fixture
positioning unit
section
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CN106799554A (en
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魏显国
卢政科
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Guangxi Sunlong Automobile Manufacturing Co ltd
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Shanghai Shenlong Bus Co Ltd
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    • 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
    • B23K37/00Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0426Fixtures for other work
    • B23K37/0435Clamps
    • B23K37/0443Jigs
    • 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

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Assembly (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

The invention relates to a special welding fixture system for a gas spring type full-bearing frame assembly, which is used for welding a frame front section, a frame middle section and a frame rear section which form the frame assembly into the frame assembly. Compared with the prior art, the invention has the advantages of shortening the production period, saving the field, reducing the investment, being suitable for small-batch multi-variety production, accurate positioning, strong adaptability, convenient operation and the like.

Description

Special welding jig system of air spring type full-load frame assembly
Technical Field
the invention relates to the field of automobile welding, in particular to a special welding fixture system for an air spring type full-load frame assembly.
background
At present, the existing bus full-load frame assembly of the company is mainly of a space structure formed by welding special-shaped steel pipes and section steel with various specifications, the structure is complex, the requirements on the sizes of relevant positions among parts such as a gas spring plate, a thrust rod support and the like are very strict, and the welding workload and the welding deformation are large. The production workshop basically adopts a 'floor stand type' method, uses the existing pipes to self-manufacture some integral simple welding clamps, and has poor positioning precision and large rework amount.
the simple tool is troublesome to operate, a tape measure is adopted for welding every time, the production efficiency is low, the product quality and consistency cannot be guaranteed, different problems often occur in the subsequent chassis assembly process, the simple tool can only be cut and drilled by using equipment such as plasma and an electric drill on site, the time and the labor are wasted, and the overall quality of a frame is seriously influenced.
Chinese patent CN203227959U discloses a bear frame welding mould entirely, including chassis and the location stand that is used for supporting the frame, the location stand includes location stand body and the location base that is used for connecting location stand body and chassis, location base and chassis fixed connection, the location stand body passes through detachable construction and is connected with the location base, detachable construction is including being used for spacing cooperation on the horizontal direction, peg graft location complex in the upper and lower direction and insert and join in marriage location structure and be used for preventing location stand body relative positioning base around the rotatory structure of stopping of the axis that extends along the grafting direction. The chassis in this patent is as an organic whole, can't realize the segmentation processing welding, can only wholly go on, and production cycle is long, and occupation space is big.
Disclosure of Invention
the invention aims to overcome the defects in the prior art and provide the special welding fixture system for the air spring type full-load frame assembly, which can shorten the production period, save the field, reduce the investment, is suitable for small-batch multi-variety production, and has accurate positioning, strong adaptability and convenient operation.
the purpose of the invention can be realized by the following technical scheme:
A special welding fixture system for a gas spring type full-bearing frame assembly is used for welding a frame front section, a frame middle section and a frame rear section which form the frame assembly into the frame assembly, and comprises a general splicing table base and a frame front section welding fixture, a frame middle section welding fixture and a frame rear section welding fixture which are sequentially arranged on the general splicing table base,
The general splicing table base comprises two parallel slide rails,
The welding fixture comprises a bearing support and a positioning unit fixed on the bearing support, the positioning unit comprises a positioning support, a positioning mechanism and a rapid fixture, a sliding block is arranged on the lower portion of the bearing support, and the sliding block is in contact with a sliding rail.
The slide rail is made of light rail steel and fixed on the upper flange of the H-shaped steel, and the slide block takes the upper plane and the side surface of the slide rail as positioning references.
The bearing bracket is formed by welding rectangular pipes.
The bearing support of the frame front section welding fixture and the frame rear section welding fixture further comprises a steel plate, and the steel plate is welded with the rectangular pipe group at the bottom of the bearing support. The positioning mechanism comprises a positioning block or a positioning pin and is arranged on the positioning bracket. The strength of the bearing bracket is enhanced.
The positioning block and the positioning support are accurately positioned and fastened by bolts, and a base plate is arranged between the positioning block and the positioning support.
The rapid clamp is a turnover C-shaped clamp and is arranged on the positioning bracket.
the slide rail be linear type slide rail, and the upper surface flushes.
the system also comprises a displacement control device, wherein the displacement control device comprises a linear motor, a displacement sensor and a control box and is used for controlling the position of the welding fixture on the sliding rail.
The linear motor comprises a rotor and a stator, the rotor is respectively positioned on the frame front section welding fixture, the frame middle section welding fixture and the frame rear section welding fixture, and the stator is positioned on the slide rail;
The displacement sensor is a grating displacement sensor;
The welding fixture positioning mechanism is a plug-in type positioning mechanism and comprises a bolt and a bolt hole, wherein the bolt is respectively positioned on the frame front section welding fixture, the frame middle section welding fixture and the frame rear section welding fixture, and the bolt hole is positioned on the general splicing platform base.
The positioning unit on the frame anterior segment welding fixture comprises a vehicle body anterior segment framework sheet frame positioning unit, a vehicle body anterior segment framework sheet frame connecting beam positioning unit, a front overhang thrust rod seat positioning unit, a front overhang lower thrust rod seat positioning unit, a front air bag cover plate positioning unit and a front shock absorber support positioning unit, which are respectively arranged corresponding to the vehicle body anterior segment framework sheet frame on the frame anterior segment, the vehicle body anterior segment framework sheet frame connecting beam, the front overhang thrust rod seat, a front air bag cover plate and the front shock absorber support.
The positioning unit on the vehicle body middle section welding fixture comprises a vehicle body middle section framework sheet frame positioning unit and a vehicle body middle section framework sheet frame connecting beam positioning unit which are respectively arranged corresponding to the vehicle body middle section framework sheet frame and the vehicle body middle section framework sheet frame connecting beam on the vehicle frame middle section.
The positioning unit on the frame rear section welding fixture comprises a body rear section framework sheet frame positioning unit, a body rear section framework sheet frame connecting beam positioning unit, a rear overhang upper thrust rod seat positioning unit, a rear overhang lower thrust rod seat positioning unit, an engine sheet frame positioning unit, a rear air bag cover plate positioning unit and a rear shock absorber support positioning unit which are respectively arranged corresponding to the body rear section framework sheet frame on the frame rear section, the body rear section framework sheet frame connecting beam, the rear overhang upper thrust rod seat, the rear overhang lower thrust rod seat, the engine sheet frame, a rear air bag cover plate and the rear shock absorber support.
the invention comprises a general splicing table base, a frame front section welding fixture, a frame middle section welding fixture, a frame rear section welding fixture and a displacement control device.
the general splicing table base is composed of standard H-shaped steel and light rail steel, the equal height of the upper planes of the two light rail steels and the four side faces of the two light rail steels are ensured to be parallel to each other during manufacturing, the center distance of the two light rail steels is ensured to meet the design requirement, and the two light rail steels are leveled and fixed with the ground after manufacturing, so that deformation is avoided. The biggest characteristic of the total splicing table base is as follows: the position of three welding clamps of the front section, the middle section and the rear section of the vehicle body is adjusted through the displacement control device, so that the general assembly manufacturing of various vehicle frames with different lengths is suitable, and a welding general platform does not need to be additionally manufactured due to the change of products.
the product positioning units on the three welding fixtures at the front section, the middle section and the rear section of the car body can be changed due to the change of products, but the positioning bases (namely the three welding fixtures at the front section, the middle section and the rear section of the car body) are in equal-height parallel with the upper planes of the two light rail steels, and two side surfaces of the positioning bases are also in parallel with the side surfaces of the rail steels and have equal center distances so as to ensure that the size is not changed when the positioning bases move on the base of the total splicing table.
The displacement control device is used for linear movement of three welding fixtures of the front section, the middle section and the rear section of the car body on the base of the general splicing table, so that the damage of the tool is avoided, and the labor intensity of an operator is reduced.
After the positions of the three welding fixtures on the front section, the middle section and the rear section of the car body are determined, the three welding fixtures and the total splicing table base are fixed through the welding fixture fixing mechanism to be completely positioned, and the welding fixture fixing structure is an inserting and positioning structure in the vertical direction and is used for preventing the welding fixtures in all sections from moving and rotating with the total splicing table base. After the positioning assembly and the underframe are positioned, the welding fixture and the general splicing table base are completely fixed by the clamping device, so that the positioning assembly is prevented from moving or being damaged when a product is demoulded, and further the product quality is influenced.
The invention finds out the production commonality of the air spring type full-bearing frame assembly by a step-by-step dissection method according to the mechanism characteristics and the process requirements of products. The frame assembly is divided into three sub-assemblies of a front section, a middle section and a rear section, and then the sub-assemblies are split into a plurality of framework sheet frames. When the three-section split assembly is manufactured, a plurality of framework piece frames are welded and shaped in place, then each framework piece frame is placed into a special welding fixture for three sub-assemblies of a front section, a middle section and a rear section respectively for positioning, clamping and welding, then each framework piece frame connecting beam is placed in sequence, is tightly connected with a positioning block in a free state and is welded with each framework piece frame, key parts such as a thrust rod support, a damper fixing plate and an air bag cover plate in the front section and the rear section sub-assemblies are welded at last, the framework piece frames are turned over and welded after being out of a mold, finally the three-section sub-assembly is welded on an assembly welding assembly table, and the key parts such as the thrust rod support, the damper fixing plate and the air bag cover plate are accurately positioned by adopting. The base of the general splicing table is suitable for assembling and welding the vehicle frame assembly with the length of less than 12 meters, the H-shaped steel and the track steel are combined, the upper plane and the side surface of the light track steel are used as positioning references, the positioning units of the front section sub assembly, the middle section sub assembly and the rear section sub assembly are positioned by the positioning units, the Y-direction position relation and the Z-direction position relation of the vehicle frame can be ensured, the X-direction positions holes in the air bag cover plates in the front section sub assembly and the rear section sub assembly, and the vehicle frame wheelbase can be ensured.
The invention strictly follows the six-point positioning principle and adopts a modern fast and high-efficiency manual clamping mode to ensure that the movement of the workpiece along the three axes of OX, OY and OZ and the 6 degrees of freedom of the rotation around the three axes are all limited, the position of the workpiece in the space is completely fixed, and the workpiece is clamped by a fast clamp, thereby effectively ensuring the integral welding quality of the frame and the position accuracy of key parts.
In order to prevent manufacturing errors caused by welding deformation, the welding sequence is adjusted, and key parts such as a thrust rod support, a damper fixing plate, an air bag cover plate and the like are subjected to positioning welding after the basic welding of the frame is finished.
Compared with the prior art, the invention has the following advantages:
(1) The framework is decomposed into a plurality of single small assemblies, and assembly welding is carried out in advance, so that the work efficiency is improved, the production period is shortened, and the method is suitable for batch production;
(2) The key dimensions of the thrust rod support, the air bag cover plate, the shock absorber support and the like are all combined fixtures, so that the positioning is accurate, the clamping is reliable, the welding quality and the technical process dimension requirements are completely ensured, and conditions are created for the subsequent assembly process;
(3) The parts are positioned accurately and reliably, clamped quickly, and welded in correct sequence, so that the problem that the three-dimensional structure is easy to deform during planarization manufacturing and welding is solved;
(4) The general splicing table base has strong universality and can be suitable for general splicing and positioning of the vehicle frame below 12 meters;
(5) the space is spacious, and workman convenient operation conveniently welds, and the drawing of patterns is convenient.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic front view of the welding fixture for the front section of the frame of the present invention;
FIG. 3 is a left side view of the welding fixture for the front section of the frame of the present invention;
FIG. 4 is a schematic structural view of the rear frame welding jig of the present invention;
Fig. 5 is a left side view structural schematic diagram of the frame rear section welding jig of the invention.
In the figure, 1 is the frame forepart, 2 is the frame middle part, 3 is the frame rear part, 4 is frame forepart welding jig, 41 is front shock absorber support positioning unit, 42 is front airbag cover plate positioning unit, 43 is front overhang push rod seat positioning unit, 44 is front overhang push rod seat positioning unit, 45 is vehicle body forepart skeleton sheet frame positioning unit, 5 is frame middle part welding jig, 6 is frame rear part welding jig, 61 is rear shock absorber support positioning unit, 62 is rear airbag cover plate positioning unit, 63 is rear overhang push rod seat positioning unit, 64 is rear overhang push rod seat positioning unit, 65 is engine sheet frame positioning unit, 66 is vehicle body rear skeleton sheet frame positioning unit, 7 is the slider, 8 is the slide rail, 9 is H shaped steel.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Example 1
The utility model provides a special welding jig system of air spring formula full-load frame assembly, as shown in figure 1 for frame assembly is welded into to frame assembly with frame anterior segment 1, frame middle section 2 and the frame back end 3 of constituteing frame assembly, frame anterior segment welding jig 4, frame middle section welding jig 5 and the frame back end welding jig 6 of arranging in proper order on assembling the platform base and assembling the platform base always. The base of the general splicing table comprises two parallel slide rails 8, the welding fixture comprises a bearing support and a positioning unit fixed on the bearing support, the positioning unit comprises a positioning support, a positioning mechanism and a quick fixture, a slide block 7 is arranged on the lower portion of the bearing support, the slide block 7 is in contact with the slide rail 8, the slide rail 8 is made of light rail steel, the slide rail is a linear slide rail, the upper surface of the slide rail is flush and fixed on the upper flange of H-shaped steel 9, the slide block 7 is accurately positioned by taking the upper plane and the side face of the slide rail 8 as positioning references, the bearing supports of the frame front section welding fixture 4 and the frame middle section welding fixture 6 further comprise steel plates, the steel plates are welded with rectangular pipes at the bottom of the bearing support, the strength of the fixture is enhanced, the frame middle section welding fixture 5 comprises three bearing supports formed by welding rectangular pipes for bearing the middle section of the vehicle body, a middle portion and a rear portion. The positioning mechanism comprises a positioning block or a positioning pin which is arranged on the positioning support, wherein the positioning block and the positioning support are accurately positioned and fastened by bolts, and a base plate is arranged between the positioning block and the positioning support. The rapid clamp is a turnover C-shaped clamp and is arranged on the positioning support and used for clamping a workpiece.
As shown in fig. 2 to 3, the positioning unit on the frame front section welding jig 4 includes a front shock absorber support positioning unit 41 of the vehicle body front section 1, a front airbag cover plate positioning unit 42, a front suspension upper thrust rod seat positioning unit 43, a front suspension lower thrust rod seat positioning unit 44, a vehicle body front section framework sheet frame positioning unit 45 and a vehicle body front section framework sheet frame connecting beam positioning unit, which are respectively arranged corresponding to the front shock absorber support on the frame front section 1, a front airbag cover plate, a front suspension upper thrust rod seat, a front suspension lower thrust rod seat, a vehicle body front section framework sheet frame and a vehicle body front section framework sheet frame connecting beam.
The positioning unit on the vehicle body middle section welding fixture 5 comprises a vehicle body middle section framework sheet frame positioning unit and a vehicle body middle section framework sheet frame connecting beam positioning unit which are respectively arranged corresponding to the vehicle body middle section framework sheet frame and the vehicle body middle section framework sheet frame connecting beam on the vehicle frame middle section 2.
As shown in fig. 4 to 5, the positioning unit on the frame front section welding jig 6 includes a rear shock absorber support positioning unit 61 of the vehicle body rear section 3, a rear airbag cover plate positioning unit 62, a rear suspension upper thrust rod seat positioning unit 63, a rear suspension lower thrust rod seat positioning unit 64, an engine sheet frame positioning unit 65, a vehicle body rear section framework sheet frame positioning unit 66 and a vehicle body rear section framework sheet frame connection beam positioning unit, which are respectively arranged corresponding to the rear shock absorber support, the rear airbag cover plate, the rear suspension upper thrust rod seat, the rear suspension lower thrust rod seat, the engine sheet frame, the vehicle body rear section framework sheet frame and the vehicle body rear section framework sheet frame connection beam on the vehicle body rear section 3.
When the three-section split assembly is manufactured, a plurality of framework piece frames are welded and shaped in place, then each framework piece frame is placed into a special welding fixture for three sub-assemblies of a front section, a middle section and a rear section respectively to be positioned, clamped and welded, then each framework piece frame connecting beam is placed in sequence, is tightly connected with a positioning block in a free state and is welded with each framework piece frame, key parts such as a thrust rod support, a damper fixing plate and an air bag cover plate in the front section and the rear section sub-assemblies are welded at last, the framework is turned over and welded after being out of a mold, finally the three-section sub-assemblies are assembled and welded on an assembly welding assembly table, and the key parts such as the thrust rod support, the damper fixing plate and the air bag cover plate are accurately positioned by adopting cylindrical. The invention strictly follows the six-point positioning principle and adopts a modern fast and high-efficiency manual clamping mode to ensure that the movement of the workpiece along the three axes of OX, OY and OZ and the 6 degrees of freedom of the rotation around the three axes are all limited, the position of the workpiece in the space is completely fixed, and the workpiece is clamped by a fast clamp, thereby effectively ensuring the integral welding quality of the frame and the position accuracy of key parts.
Example 2
The embodiment is basically the same as embodiment 1, except that the bearing brackets of the frame front section welding jig 4, the frame middle section welding jig 5 and the frame rear section welding jig 6 in the embodiment are not provided with steel plates, but are formed by welding rectangular steel plates.
Example 3
The embodiment is substantially the same as embodiment 1, and the welding jig system of the embodiment further includes a displacement control device, where the displacement control device includes a linear motor, a displacement sensor, a welding jig positioning mechanism, and a control box, and is used to control the position of the welding jig on the slide rail. The linear motor comprises a rotor and a stator, wherein the rotor is positioned on each welding fixture, and the stator is positioned on the sliding rail; the displacement sensor is a grating displacement sensor; the welding fixture positioning mechanism is an inserting positioning structure in the up-down direction and comprises a bolt positioned on each section of welding fixture and a bolt hole on the base of the general splicing table. Each section of welding fixture is displaced, positioned and fixed on the base of the general splicing table under the control of the control box.

Claims (8)

1. a special welding fixture system for a gas spring type full-bearing frame assembly is characterized by being used for welding a frame assembly by a frame front section, a frame middle section and a frame rear section which form the frame assembly, and comprising a general assembly table base and a frame front section welding fixture, a frame middle section welding fixture and a frame rear section welding fixture which are sequentially arranged on the general assembly table base,
the general splicing table base comprises two parallel slide rails,
The welding fixtures all comprise a bearing support and a positioning unit fixed on the bearing support, the positioning unit comprises a positioning support, a positioning mechanism and a quick fixture, a sliding block is arranged at the lower part of the bearing support, and the sliding block is in contact with a sliding rail;
The system also comprises a displacement control device, wherein the displacement control device comprises a linear motor, a displacement sensor, a welding fixture positioning mechanism and a control box and is used for controlling the position of the welding fixture on the sliding rail;
the linear motor comprises a rotor and a stator, the rotor is respectively positioned on the frame front section welding fixture, the frame middle section welding fixture and the frame rear section welding fixture, and the stator is positioned on the slide rail;
The displacement sensor is a grating displacement sensor;
the welding fixture positioning mechanism is a plug-in type positioning mechanism and comprises bolts and bolt holes, wherein the bolts are respectively positioned on the frame front section welding fixture, the frame middle section welding fixture and the frame rear section welding fixture, and the bolt holes are positioned on the general splicing table base;
The positioning unit on the welding fixture for the front section of the frame comprises a positioning unit for a framework sheet frame of the front section of the frame, a positioning unit for a connecting beam of the framework sheet frame of the front section of the frame, a positioning unit for a thrust rod seat of a front suspension, a positioning unit for a cover plate of a front airbag and a positioning unit for a support of a front damper, which are respectively arranged corresponding to the framework sheet frame of the front section of the frame, the connecting beam of the framework sheet frame of the front section of the frame, the thrust rod seat of the front suspension, the support of the thrust rod seat of the,
the positioning unit on the welding fixture for the middle section of the vehicle body comprises a positioning unit for a framework sheet frame of the middle section of the vehicle body and a positioning unit for a connecting beam of the framework sheet frame of the middle section of the vehicle body, which are respectively arranged corresponding to the framework sheet frame of the middle section of the vehicle body and the connecting beam of the framework sheet frame of the middle section of the vehicle body on the middle section of the vehicle frame,
the positioning unit on the frame rear section welding fixture comprises a body rear section framework sheet frame positioning unit, a body rear section framework sheet frame connecting beam positioning unit, a rear overhang upper thrust rod seat positioning unit, a rear overhang lower thrust rod seat positioning unit, an engine sheet frame positioning unit, a rear air bag cover plate positioning unit and a rear shock absorber support positioning unit which are respectively arranged corresponding to the body rear section framework sheet frame on the frame rear section, the body rear section framework sheet frame connecting beam, the rear overhang upper thrust rod seat, the rear overhang lower thrust rod seat, the engine sheet frame, a rear air bag cover plate and the rear shock absorber support.
2. the special welding fixture system for the air spring type full-load frame assembly according to claim 1, wherein the slide rail is made of light rail steel and fixed on an upper flange of the H-shaped steel, and the slide block takes an upper plane and a side surface of the slide rail as positioning references.
3. The welding fixture system special for the air spring type full-load frame assembly according to claim 1, wherein the load-bearing bracket is formed by welding rectangular pipes.
4. The welding fixture system special for the gas spring type full-load frame assembly according to claim 3, wherein the load-bearing supports of the frame front section welding fixture and the frame rear section welding fixture further comprise steel plates, and the steel plates are welded with the rectangular pipes at the bottoms of the load-bearing supports.
5. The special welding fixture system for the air spring type full-load frame assembly according to claim 1, wherein the positioning mechanism comprises a positioning block or a positioning pin, and the positioning block or the positioning pin is arranged on the positioning support.
6. The welding fixture system special for the gas spring type full-load frame assembly according to claim 5, wherein the positioning block and the positioning support are accurately positioned and fastened by bolts, and a base plate is arranged between the positioning block and the positioning support.
7. the welding fixture system special for the gas spring type full-load frame assembly according to claim 1, wherein the rapid fixture is a turnover type C-shaped fixture and is arranged on the positioning bracket.
8. the welding fixture system special for the air spring type full-load frame assembly according to claim 1, wherein the slide rail is a linear slide rail, and the upper surface of the slide rail is flush.
CN201510836990.7A 2015-11-26 2015-11-26 Special welding jig system of air spring type full-load frame assembly Active CN106799554B (en)

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Publication number Priority date Publication date Assignee Title
CN109048140B (en) * 2018-10-24 2024-06-25 博飞特(上海)智能设备股份有限公司 De-standard rail steel sliding table device for multi-vehicle type switching of white vehicle body welding clamp
CN112809296B (en) * 2021-02-05 2022-09-20 东风汽车股份有限公司 Modular flexible combined welding fixture for edge beam type frame and use method of modular flexible combined welding fixture
CN114434075A (en) * 2022-03-07 2022-05-06 上海申龙客车有限公司 Vehicle frame assembly table

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CN204603640U (en) * 2015-03-25 2015-09-02 上海申龙客车有限公司 Air-spring type full loading carriage back segment skeleton welding fixture special
CN204603639U (en) * 2015-03-25 2015-09-02 上海申龙客车有限公司 Air-spring type full loading carriage leading portion skeleton welding fixture special
CN204748202U (en) * 2015-06-16 2015-11-11 深圳市万嘉科技有限公司 Processing equipment

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Publication number Priority date Publication date Assignee Title
CN103894771A (en) * 2012-12-28 2014-07-02 上海申龙客车有限公司 General welding jig applied to manufacturing fully-integral chassis
CN204603640U (en) * 2015-03-25 2015-09-02 上海申龙客车有限公司 Air-spring type full loading carriage back segment skeleton welding fixture special
CN204603639U (en) * 2015-03-25 2015-09-02 上海申龙客车有限公司 Air-spring type full loading carriage leading portion skeleton welding fixture special
CN204748202U (en) * 2015-06-16 2015-11-11 深圳市万嘉科技有限公司 Processing equipment

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