CN112222718A - Flexible assembly welding fixture system for car roof - Google Patents
Flexible assembly welding fixture system for car roof Download PDFInfo
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- CN112222718A CN112222718A CN202011002582.9A CN202011002582A CN112222718A CN 112222718 A CN112222718 A CN 112222718A CN 202011002582 A CN202011002582 A CN 202011002582A CN 112222718 A CN112222718 A CN 112222718A
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- roof
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
- B23K2103/05—Stainless steel
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Abstract
The invention relates to the technical field of manufacturing equipment of railway passenger cars, in particular to a flexible assembling and welding clamp system for a car roof. The welding fixture solves the technical problems that in the prior art, when a stainless steel roof welding manufacturing process is used for manufacturing and changing types, a fixture system is complex to adjust, and effective production time is wasted. The control unit receives the roof model information of the railway passenger car based on a hardware device, and the hardware device classifies the roof model information into a plurality of execution signals based on a curing program loaded by the hardware device; the preset moving distance or the preset moving height formed by the execution unit drives the corresponding execution unit to move based on the instruction of the execution signal; the execution unit feeds back the coordinates of the X-axis, the Y-axis and the Z-axis of the execution unit to the control unit, and the coordinates are received by the hardware equipment. According to the technical scheme, the welding production of the stainless steel car roof is effectively improved and optimized, the tool shape changing time can be greatly shortened, and the productivity of a stainless steel production line is released.
Description
Technical Field
The invention relates to the technical field of manufacturing equipment of railway passenger cars, in particular to a flexible assembling and welding clamp system for a car roof.
Background
In the prior art, in the process of welding and manufacturing a stainless steel roof of a railway passenger car, the following problems exist by utilizing a traditional clamp, for example, a roof assembling and welding clamp still adopts a manual tape measure to measure the size and manually adjust, the process is biased to manual skill, the manual skill is not easy to master, the adjusting time is long, about 1-2 working days are estimated for adjusting different clamps of the same project to be manufactured, and if the clamp period of different projects to be manufactured is related, 2-3 working days are increased and adjusted, so that the capacity is wasted during the model changing period; in addition, the positioning precision is poor, manual adjustment is relied on during model changing, and the trial production period is long; the problem is that the clamp is frequently adjusted when a new vehicle model is trial-manufactured, and the generated adjustment problem is more and more obvious. Obviously, the manufacturing and production mode in the prior art is difficult to match with the existing production organization, is not favorable for the production organization, still has multi-row production, and does not meet the lean production requirement under the existing trend.
Disclosure of Invention
The invention provides a flexible assembly welding clamp system for a car roof, aiming at solving the technical problems that the clamp system is complex to adjust and wastes effective production time when a stainless steel car roof welding manufacturing process in the prior art is manufactured and remodeled.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a flexible assembly welding fixture system for a vehicle roof, comprising:
the control unit receives the roof model information of the railway passenger car based on a hardware device, and the hardware device classifies the roof model information into a plurality of execution signals based on a curing program loaded by the hardware device;
the execution units are used for receiving the execution signals in a one-to-one correspondence manner and executing the working instructions;
any one group of the execution units is provided with a working end so as to form a group welding clamp system;
at least part of the execution units can move along the Y-axis direction of the roof of the railway passenger car to form a preset movement distance; and/or the movable platform can move along the Z-axis direction of the roof of the railway passenger car to form a preset moving height;
at least part of the execution units can move along the X-axis direction of the roof of the railway passenger car to form another preset distance; and/or can move along the Z-axis direction of the roof of the railway passenger car to form another preset moving height;
a preset moving distance or a preset moving height formed by any one group of execution units drives the corresponding execution unit to move on the basis of an instruction of an execution signal;
and any one group of execution units feeds back the coordinates of the X-axis, the Y-axis and the Z-axis of the execution units to the control unit and receives the coordinates by the hardware equipment.
Further, the plurality of execution units includes at least:
the side beam positioning execution units are arranged in at least two rows along the length direction of a preset installation position;
the preset installation position is used for corresponding to the length direction of the railway passenger car;
the boundary beam positioning execution unit is provided with a boundary beam positioning working end which can move along the Z-axis direction.
The flexible assembly welding jig system for vehicle roofs of claim, wherein said side sill positioning performing unit has:
and the boundary beam movement module can move along the height direction of the boundary beam mounting seat so that the boundary beam positioning working end can move along the Z-axis direction when being carried on the boundary beam movement module.
Further, the edge beam positioning working ends can move along the width direction of the edge beam movement module, so that the distance between the edge beam positioning working ends in the same row in the Y-axis direction can be adjusted.
Furthermore, the moving action of the edge beam positioning working end in the width direction of the edge beam moving module and the moving action of the edge beam moving module along the edge beam mounting seat are respectively driven and controlled by an independent driving mechanism.
Further, the plurality of execution units includes at least:
the plurality of roof camber beam positioning execution units are arranged in a row along the square of an X axis and are connected to a roof camber beam positioning guide rail in a rail way;
any one group of roof camber beam positioning execution units can move along the roof camber beam positioning guide rail, and the distance between any two adjacent groups of roof camber beam positioning execution units on the X axis is changed.
Furthermore, a plurality of roof camber beam positioning execution units which are arranged on a roof camber beam positioning guide rail in a row are positioned between two rows of side beam positioning execution units.
Further, any one set of the roof camber beam positioning executing units is provided with:
a roof bow positioning portion configured in a single step shape as a working end portion;
the second end of the roof camber beam fixing seat is used for rail-connecting a roof camber beam positioning guide rail;
the roof camber beam positioning part is connected to the first end of the roof camber beam fixing seat in a rail mode and can move along the Z-axis direction.
Further, the control unit includes:
a flexible clamp controller to output a signal for execution of the curing program based on which the hardware device is loaded;
further comprising:
the controller execution module is connected with the flexible clamp controller through a specification hub;
the motor driving part is electrically connected with the controller execution module;
the executing unit is connected along the X axis, the Y axis or the Z axis in a rail joint mode;
the motor driving part is used for driving and controlling the executing unit to move in a rail joint mode in the X-axis direction, the Y-axis direction or the Z-axis direction and a position sensor used for recognizing coordinates and forming feedback.
Further, the method also comprises the following steps: the fan positioning execution units are arranged in two rows along the length direction of a preset installation position;
the fan positioning execution unit and the roof camber beam positioning execution unit are provided with the same rail-connected moving component, so that the fan positioning execution unit has the same moving mode on the Z axis and the Y axis;
the fan positioning execution unit takes a fan positioning part as a working end.
The invention has the following beneficial effects:
on the first hand, the technical scheme of the application effectively improves and optimizes the welding production of the stainless steel car roof, can greatly shorten the tooling type changing time, and releases the productivity of a stainless steel production line.
In the second aspect, the technical scheme of this application can guarantee anchor clamps positioning accuracy, promotes and makes quality and efficiency, shortens new motorcycle type trial-manufacturing cycle by a wide margin, solves the difficult problem of lean-based scheduling.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a general schematic diagram of the technical arrangement of the present invention;
FIG. 2 is a schematic diagram of an embodiment of the present invention;
FIG. 3 is a schematic view of a side sill positioning actuator and a roof camber positioning actuator of the present invention;
FIG. 4 is a schematic diagram of a fan positioning actuator according to the present invention;
FIG. 5 is a schematic layout of the control principle of the present invention;
FIG. 6 is a schematic diagram of the feedback control of the present invention;
FIG. 7 is a side embodiment of a prior art clamp system;
FIG. 8 is a set of application examples of the present invention based on a prior art vehicle model.
The reference numerals in the figures denote:
x-axis, Y-axis, Z-axis
100. A control unit; 200. an execution unit; 30. a boundary beam positioning execution unit;
31. the boundary beam positions the working end; 33. a boundary beam movement module;
35. a boundary beam mounting base; 40. a roof camber beam positioning execution unit;
6. a roof camber beam positioning guide rail; 41. a roof camber beam positioning portion; 42. a roof camber beam fixing seat;
50. a fan positioning execution unit; 51. fan location portion.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the present invention; for convenience of description, in the present application, "left side" is "first end", "right side" is "second end", "upper side" is "first end", and "lower side" is "second end" in the current view, so that the description is for the purpose of clearly expressing the technical solution, and should not be construed as an improper limitation to the technical solution of the present application.
The invention provides a flexible assembly welding clamp system for a car roof, aiming at solving the technical problems that the clamp system is complex to adjust and wastes effective production time when a stainless steel car roof welding manufacturing process in the prior art is manufactured and remodeled.
Referring to fig. 1-3, the flexible assembly welding jig system for vehicle roof includes: a control unit 100 that receives the roof model information of the railway passenger car based on a hardware device that classifies the roof model information into a plurality of execution signals based on a curing program loaded by the hardware device; a plurality of execution units 200 for receiving the execution signals and executing the work instructions in a one-to-one correspondence; any one group of execution units 200 has a working end to form a group welding fixture system;
at least part of the execution units 200 can move along the Y-axis direction of the roof of the railway passenger car to form a preset movement distance; and/or the movable platform can move along the Z-axis direction of the roof of the railway passenger car to form a preset moving height;
at least part of the actuating units 200 can move along the X-axis direction of the roof of the railway passenger car to form another preset distance; and/or can move along the Z-axis direction of the roof of the railway passenger car to form another preset moving height;
the preset moving distance or the preset moving height formed by any one group of execution units 200 drives the corresponding execution unit 200 to move based on the instruction of the execution signal;
any one of the execution units 200 feeds back its own coordinates of X, Y, and Z axes to the control unit 100, and is received by the hardware device.
According to the technical scheme, a stainless steel roof steel structure welding production process is applied, in a specific implementation mode, a roof assembly welding clamp system is divided into 82 execution units, a driving part position stepping motor adopted by the specific execution unit is used for controlling, the reset positioning precision is guaranteed, the control unit 100 comprises a flexible clamp controller, an industrial control computer can be specifically involved, and flexible clamp disease control software is used as a curing program and adopts an RS485 control network.
Referring to fig. 3 and 4, the execution units 200 at least include: a plurality of side beam positioning execution units 30, which are arranged in at least two rows along the length direction of a preset installation position; the preset installation position is used for corresponding to the length direction of the railway passenger car; the edge beam positioning actuator 30 has an edge beam positioning working end 31, and the edge beam positioning working end 31 is movable in the Z-axis direction. In one embodiment, 34 side rail positioning execution units 30 are included, and the side rail positioning execution units 30 solve the problems of side rail positioning in the vehicle style direction and roof side rail deflection positioning.
Referring to fig. 1-4, the edge beam positioning executing unit 30 includes: the side sill motion block 33 is movable in the height direction of the side sill attachment 35 so that the side sill positioning work end 31 can move in the Z-axis direction when the side sill positioning work end 31 is mounted on the side sill motion block 33.
Referring to fig. 1-4, the edge beam positioning working ends 31 can move along the width direction of the edge beam moving module 33, so that the distance between the edge beam positioning working ends 31 in the same row in the Y-axis direction can be adjusted.
Referring to fig. 1-4, the movement of the edge beam positioning working end 31 in the width direction of the edge beam movement module 33 and the movement of the edge beam movement module 33 along the edge beam mounting seat 35 are driven and controlled by an independent driving mechanism 330.
Referring to fig. 1-4, the execution units 200 include: a plurality of roof camber beam positioning execution units 40 which are arranged in a row along the X-axis square and are rail-connected to a roof camber beam positioning guide rail 6;
any one set of the roof camber beam positioning execution units 40 can move along the roof camber beam positioning guide rail 6, and the distance between any two adjacent sets of the roof camber beam positioning execution units 40 on the X axis is changed.
In one specific embodiment, 36 bending beam positioning execution units 40 are included to solve the problem of the positioning of the bending beam in the vehicle length direction; and positioning the height of the car roof and the deflection camber beam of the car roof.
More specifically, referring to fig. 1-4, a plurality of roof bow positioning actuators 40 are disposed in a row on a roof bow positioning rail 6 between two rows of side sill positioning actuators 30.
Referring to fig. 1 to 4, each of the roof bow positioning actuators 40 includes: a roof bow positioning portion 41 configured in a single step shape as a working end portion; a roof camber beam fixing seat 42, a second end of which is used for rail-connecting the roof camber beam positioning guide rail 6; the roof bow positioning portion 41 is rail-connected to a first end of the roof bow fixing base 42 and is movable in the Z-axis direction.
Referring to fig. 5-6, the control unit 100 includes: a flexible clamp controller to output a signal for execution of the curing program based on which the hardware device is loaded; further comprising: the controller execution module is connected with the flexible clamp controller through the specification hub; the motor driving part is electrically connected with the controller execution module;
the connection mode of the execution unit 200 along the X axis, the Y axis or the Z axis is rail connection; the motor driving part is used for driving and controlling the rail-connected movement of the execution unit 200 in the X-axis direction, the Y-axis direction or the Z-axis direction and a position sensor used for recognizing coordinates and forming feedback.
Please refer to fig. 1-4, which further includes: the fan positioning execution units 50 are arranged in two rows along the length direction of a preset installation position; the fan positioning execution unit 50 and the roof camber beam positioning execution unit 40 have the same rail-connected moving parts, so that the fan positioning execution unit 50 has the same moving mode on the Z axis and the Y axis;
the fan positioning execution unit 50 uses the fan positioning portion 51 as a working end, and in a specific embodiment, the fan positioning execution unit 50 solves a pantograph positioning problem for adjusting the fan supporting height.
The technical advantage of the present application is that, referring to fig. 3 and 4, a beam frame portion is schematically indicated by a dotted line in the drawings, a side beam is supported by the side beam through a working end of a side beam positioning execution unit 30, and can move in the Z-axis direction to perform vehicle roof virus deflection positioning, and a first end of a camber beam positioning execution unit 40 is used to perform central camber beam support on the camber beam portion similarly to a single-step structure, and moves in the X-axis direction to coordinate support positions; further, the movement of the side member positioning actuator 30 in the Y-axis direction more effectively positions the vehicle width side member.
In summary, the present application will provide a more specific implementation effect to prove the technical effect claimed by the present application, so as to explain that the trial production period of the new vehicle model is greatly shortened, please refer to fig. 6 and 7, in which fig. 7 shows the process time of the prior art for four vehicle models of a preset item a; fig. 8 shows the time for performing the process on four vehicle models of the same preset project a by using the clamping system.
On the first hand, the problem of alternate positioning of different vehicle types is effectively solved, wherein the conventional clamp is manually adjusted and positioned for 2-4 hours; the technical scheme of the application can realize automatic adjustment and positioning for 5 minutes.
In the second aspect, the size problem occurs, wherein the conventional clamp automatically displays the clamp positioning size without checking the clamp positioning size for 4 hours.
And in the third aspect, the positioning size process is adjusted, the traditional clamp is manually adjusted and positioned for 2-4 hours, and the technical scheme of the application automatically adjusts and positions for 5 minutes.
In the fourth aspect, trial-manufacture needs are changed in an emergency mode, a traditional clamp is used for checking the positioning size of the clamp for 8 hours, and the technical scheme of the application is automatically changed and adjusted for 5 minutes.
And in the fifth aspect, the lean scheduling problem is solved and the calculation and comparison are carried out according to 2 projects, 2 trains, 3 vehicle types, 1 daily product and the like: a conventional jig. Accumulating the model changing time for 40 hours; the model change time of the application is accumulated for 2.3 hours. More specifically, the shape changing time of the flexible assembling and welding clamp for the stainless steel roof is 5.8% of that of the traditional clamp, the capacity of releasing 4 trolleys is increased, and the capacity is increased by 17%.
Obviously, through the comparison, for the traditional car roof assembly welding clamp, the manual adjustment and the adjustment time are long, the productivity is wasted during model changing, the positioning precision is poor, the clamp is frequently adjusted during trial production of new car models, the adjustment problem is more, the tool verification time after adjustment is long, and the welding production of the stainless steel car roof is seriously influenced.
The technical scheme of the original traditional vehicle roof assembling and welding clamp has obvious defects which cannot be overcome, and cannot be improved through common knowledge, and even if some positioning structures are optimized, the technical scheme is far from ingenious like the positioning structure. Therefore, compared with the prior art, the invention has the advantages and beneficial effects. The invention greatly shortens the tooling model changing time, releases the production capacity of a stainless steel production line, improves the positioning precision of the clamp, improves the manufacturing quality and efficiency, greatly shortens the trial production period of new vehicle models and solves the problem of lean production scheduling. The labor intensity of workers is reduced, the welding position is accurate, the deviation is small, and the overall intelligent level of the stainless steel roof welding fixture is greatly improved.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit 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 within the scope of the invention.
Claims (10)
1. A flexible assembly welding fixture system for a vehicle roof is characterized by comprising:
a control unit (100) that receives the roof model information of the railway passenger car based on a hardware device that classifies the roof model information into a plurality of execution signals based on a curing program loaded by the hardware device;
the execution units (200) are used for receiving the execution signals in a one-to-one correspondence mode and executing work instructions;
any one group of the execution units (200) is provided with a working end so as to form a group welding clamp system;
at least part of the execution units (200) can move along the Y-axis direction of the roof of the railway passenger car to form a preset movement distance; and/or the movable platform can move along the Z-axis direction of the roof of the railway passenger car to form a preset moving height;
at least part of the execution units (200) can move along the X-axis direction of the roof of the railway passenger car to form another preset distance; and/or can move along the Z-axis direction of the roof of the railway passenger car to form another preset moving height;
the preset moving distance or the preset moving height formed by any one group of execution units (200) drives the corresponding execution unit (200) to move based on the instruction of the execution signal;
any one set of the execution units (200) feeds back its own coordinates of X-axis, Y-axis, Z-axis to the control unit (100) and is received by the hardware device.
2. The vehicle roof flexible assembling and welding clamp system according to claim 1, wherein the plurality of execution units (200) at least comprise:
a plurality of edge beam positioning execution units (30) which are at least arranged in two rows along the length direction of a preset installation position;
the preset installation position is used for corresponding to the length direction of the railway passenger car;
the side beam positioning execution unit (30) is provided with a side beam positioning working end (31), and the side beam positioning working end (31) can move along the Z-axis direction.
3. The flexible assembly welding jig system for vehicle roof according to claim 2, wherein the side sill positioning performing unit (30) has:
and the edge beam movement module (33) can move along the height direction of the edge beam mounting seat (35) so that when the edge beam positioning working end (31) is carried on the edge beam movement module (33), the edge beam positioning working end (31) can move along the Z-axis direction.
4. The flexible assembly welding jig system for vehicle roof as claimed in claim 3, wherein the side sill positioning working end (31) can move in the width direction of the side sill moving module (33) so that the distance between the side sill positioning working ends (31) in the same row in the Y-axis direction can be adjusted.
5. The flexible assembling and welding clamp system for vehicle roof according to claim 4, characterized in that the movement of the edge beam positioning working end (31) in the width direction of the edge beam movement module (33) and the movement of the edge beam movement module (33) along the edge beam mounting seat (35) are respectively driven and controlled by an independent driving mechanism (330).
6. The vehicle roof flexible assembling and welding clamp system according to claim 2, wherein the plurality of execution units (200) at least comprise:
a plurality of roof camber beam positioning execution units (40) which are arranged in a row along the X-axis square and are connected to a roof camber beam positioning guide rail (6) in a rail manner;
any one group of the roof camber beam positioning execution units (40) can move along the roof camber beam positioning guide rail (6), and the distance between any two adjacent groups of the roof camber beam positioning execution units (40) on the X axis is changed.
7. The flexible assembly welding jig system for vehicle roofs of claim 6, wherein a plurality of roof bow positioning actuators (40) are arranged in a row on a roof bow positioning rail (6) between two rows of side sill positioning actuators (30).
8. The flexible assembly welding jig system for vehicle roof according to claim 6, wherein any one of the plurality of the vehicle roof camber beam positioning executing units (40) has:
a roof bow positioning portion (41) configured in a single step shape as a working end portion;
the second end of the roof camber beam fixing seat (42) is used for being connected with a roof camber beam positioning guide rail (6) in a rail mode;
the roof camber beam positioning part (41) is connected to a first end of the roof camber beam fixing seat (42) in a rail mode and can move along the Z-axis direction.
9. The vehicle roof flexible assembling and welding clamp system according to claim 1, wherein the control unit (100) comprises:
a flexible clamp controller to output a signal for execution of the curing program based on which the hardware device is loaded;
further comprising:
the controller execution module is connected with the flexible clamp controller through a specification hub;
the motor driving part is electrically connected with the controller execution module;
the execution unit (200) is connected along the X axis, the Y axis or the Z axis in a rail joint mode;
the motor driving component is used for driving and controlling the executing unit (200) to move in a rail joint mode in the X-axis direction, the Y-axis direction or the Z-axis direction and a position sensor used for recognizing coordinates and forming feedback.
10. The flexible assembly welding jig system for vehicle roofs of claim 6, further comprising:
the fan positioning execution units (50) are arranged in two rows along the length direction of a preset installation position;
the fan positioning execution unit (50) and the roof camber beam positioning execution unit (40) are provided with the same rail-connected moving component, so that the fan positioning execution unit (50) has the same moving mode on the Z axis and the Y axis;
the fan positioning execution unit (50) takes a fan positioning part (51) as a working end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011002582.9A CN112222718B (en) | 2020-09-22 | 2020-09-22 | Flexible assembly welding fixture system for car roof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011002582.9A CN112222718B (en) | 2020-09-22 | 2020-09-22 | Flexible assembly welding fixture system for car roof |
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| CN112222718A true CN112222718A (en) | 2021-01-15 |
| CN112222718B CN112222718B (en) | 2022-08-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114211167A (en) * | 2021-12-31 | 2022-03-22 | 中车长春轨道客车股份有限公司 | Adjusting method of subway vehicle roof steel structure assembling and welding device based on three-dimensional coordinate system |
| CN114227123A (en) * | 2021-12-31 | 2022-03-25 | 中车长春轨道客车股份有限公司 | Subway vehicle roof steel structure assembly welding device based on three-dimensional coordinate system |
| CN117340474A (en) * | 2023-12-04 | 2024-01-05 | 江苏今创车辆有限公司 | Diesel locomotive frame welding device with welding deformation preventing function |
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| CN114211167A (en) * | 2021-12-31 | 2022-03-22 | 中车长春轨道客车股份有限公司 | Adjusting method of subway vehicle roof steel structure assembling and welding device based on three-dimensional coordinate system |
| CN114227123A (en) * | 2021-12-31 | 2022-03-25 | 中车长春轨道客车股份有限公司 | Subway vehicle roof steel structure assembly welding device based on three-dimensional coordinate system |
| CN114227123B (en) * | 2021-12-31 | 2024-03-22 | 中车长春轨道客车股份有限公司 | Subway vehicle roof steel structure assembly welding device based on three-dimensional coordinate system |
| CN117340474A (en) * | 2023-12-04 | 2024-01-05 | 江苏今创车辆有限公司 | Diesel locomotive frame welding device with welding deformation preventing function |
| CN117340474B (en) * | 2023-12-04 | 2024-02-13 | 江苏今创车辆有限公司 | Diesel locomotive frame welding device with welding deformation preventing function |
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