CN108804816A - A kind of anti-side rolling torsion rod axis for railway vehicle upset forging process simulating analysis - Google Patents
A kind of anti-side rolling torsion rod axis for railway vehicle upset forging process simulating analysis Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 177
- 230000008569 process Effects 0.000 title claims abstract description 168
- 238000009721 upset forging Methods 0.000 title claims abstract description 34
- 238000005096 rolling process Methods 0.000 title claims abstract description 20
- 238000004458 analytical method Methods 0.000 title claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 80
- 238000004088 simulation Methods 0.000 claims abstract description 68
- 238000001816 cooling Methods 0.000 claims abstract description 66
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 40
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- 238000013461 design Methods 0.000 claims abstract description 14
- 230000015556 catabolic process Effects 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 9
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- 238000010835 comparative analysis Methods 0.000 claims description 5
- 238000012986 modification Methods 0.000 claims description 5
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- 238000009826 distribution Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
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- 238000005516 engineering process Methods 0.000 description 2
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- 230000007246 mechanism Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
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- 238000005242 forging Methods 0.000 description 1
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Abstract
The invention discloses a kind of anti-side rolling torsion rod axis for railway vehicle upset forging process simulating analysis, implementation steps include：Upset forging process is bar heating, upsetting formation, whole cooling three processes and obtains technical papers by sequential breakdown is carried out, obtains dimensional parameters and material trademark involved by three processes；Establish bar, heating mould, mandril, heading, cavity plate, fixing mould geometrical model, and according in technical papers parameter complete bar and heating mould, cavity plate and fixing mould assembly；It carries out bar heating, upsetting formation, the emulation for integrally cooling down three processes respectively in forming process simulation analysis software and progress reasonability judges to obtain final technological parameter scheme after meeting the requirements.The present invention substitutes current experience design method by simulating analysis, can solve current upset forging process trial-production often, the production cycle is long, the high problem of manufacturing cost.
Description
Technical field
The present invention relates to anti-side rolling torsion rod axis for railway vehicle jumping-ups to be molded production technology, and in particular to a kind of rail vehicle
With anti-side rolling torsion rod axis upset forging process simulating analysis.
Background technology
The application of air spring substantially improves the vertical vibration performance of train, but the angle of roll for reducing car body is rigid
Degree.To improve the anti-rolling performance of vehicle, torsion bar mechanism for preventing side rolling of train carriage is widely used.Anti-side rolling torsion rod axis structure feature is shaft end
Portion's diameter passes through end upset forging process far more than interlude diameter, the structure（One kind increasing work by mold axial direction crimp
The moulding process of part diameter）It realizes, specific embodiment is as follows：Bar is subjected to end heat by intermediate frequency furnace, is then moved to
Bar heating end is positioned in concave die cavity and is positioned by jumping-up equipment.Under forcing press effect, heading extruded rod in an axial direction
Then material unloads mold, rod piece is placed in fixing mould is hollow to be cooled to room temperature until it is fully populated with completely entire mold cavity.
Upset forging process needs to ensure that torsion bar shaft upset portion meets size requirement, cannot have filling and be discontented with defect, and
Streamline distribution rule；Major parameter of upset forging process, including heating temperature, die size, bar size, equipment load etc..Mesh
The research of preceding torsion bar shaft upsetting process is based primarily upon empirical analysis method, by a large amount of trial production, carries out properties of product experiment,
It could be produced in batches after the whole qualifications of small lot, exist and be difficult to find Defects Forming Mechanism, trial-production number is difficult to control, batch
The shortcomings of production definition period is long, and trial-production experimentation cost is high is measured, is unfavorable for the control of product development cycle and development cost, no
It is quickly introduced to the market conducive to product, has vital influence to the competitiveness of product in market.
Invention content
The technical problem to be solved in the present invention：For the above problem of the prior art, a kind of anti-side used for rail vehicle is provided
Torsion bar shaft upset forging process simulating analysis is rolled, current experience design method is substituted by simulating analysis, mesh can be solved
Often, the production cycle is long, the high problem of manufacturing cost for preceding upset forging process trial-production.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of anti-side rolling torsion rod axis for railway vehicle upset forging process simulating analysis, it is characterised in that implementation steps include：
1）Upset forging process is bar heating, upsetting formation, whole cooling three processes and obtains three by sequential breakdown is carried out
The technical papers of process, according to technical papers obtain three processes involved by bar, heating mould, mandril, heading, cavity plate,
The dimensional parameters and material trademark of fixing mould；
2）Establish bar, heating mould, mandril, heading, cavity plate, fixing mould geometrical model, and according in technical papers
Parameter completes the assembly of bar and heating mould, cavity plate and fixing mould；
3）A bar heating process is created in forming process simulation analysis software, by the bar assembled and heating mould
Geometrical model imports, and mode of heating is arranged, and grid division defines streamline, material properties to bar, establishes bar Heating Simulation mould
The technological parameter of type, setting bar heating process carries out bar heating process simulation；
4）Read bar heating process simulation when bar Temperature Distribution and judge whether it is consistent with technological temperature, and if technique
Temperature is consistent, then exports the simulation result of bar heating process, redirects and executes step 5）；Otherwise bar heating process is changed extremely
One item missing technological parameter, the technological parameter of the bar heating process include heating time, heated perimeter, control heating temperature with
And heating region, it redirects and executes step 4）；
5）Upsetting formation process is created in forming process simulation analysis software, by the mandril assembled, heading, cavity plate
Geometrical model import, and import heating process bar geometrical model be used as workpiece, be arranged heading equipment moving drive class
Type is hydraulic press, and setting stops when reaching specified stroke, and workpiece uses the grid of previous step heating process simulation, to cavity plate and work
Part definition material attribute establishes upsetting formation process simulation model；
6）Upsetting formation process simulation is carried out, it is inherent special to obtain the items of workpiece and cavity plate in the forming process of jumping-up process simulation
External feature and equipment load seek peace with the situation of change of heading stroke, the internal characteristics include ess-strain and metal stream
Line, the external feature include deformation and temperature；Judge that whether metal streamline occur disorderly in the forming process of jumping-up process simulation
Disorderly or workpiece fills discontented or concave die in cavity plate and bursts problem, if there is any of the above-described problem, then changes jumping-up
The technological parameter of the technological parameter of forming process, the upsetting formation process includes that mold cavity, heading stroke and bar are straight
Diameter, if only change mold cavity, one in heading stroke the two or all if redirect and execute step 6）If changing stick
Material diameter, which then redirects, executes step 2）；Otherwise, the simulation result of export jumping-up process simulation, redirects and executes step 7）；
7）A whole cooling process is created in forming process simulation analysis software, exports the torsion bar shaft of upsetting formation process,
And the geometrical model of fixing mould is imported, it sets fixing mould and the unformed end of torsion bar shaft to Glue, net is divided to torsion bar shaft
Lattice, and definition material attribute establish whole cooling procedure simulation model；
8）The technological parameter of whole cooling process is set and carries out whole cooling process simulation, reads torsion bar shaft size after cooling,
Judge whether torsion bar shaft size after cooling meets design requirement, whole cooling process is corrected if being unsatisfactory for design requirement
The technological parameter of technological parameter, the entirety cooling process includes cooling tool structure, air-cooled rate, bar diameter, works as size
The technological parameter of modified whole cooling process includes modification bar diameter when deviation is more than predetermined threshold value, and cold correcting entirety
But it is redirected after the technological parameter of process and executes step 2）；The modified entirety cooling process when dimensional discrepancy is less than predetermined threshold value
Technological parameter include one in cooling tool structure, air-cooled rate two or all, and correcting whole cooling process
Technological parameter after redirect execute step 8）；If meeting design requirement, the simulation result of whole cooling process is exported, and
It redirects and executes step 8）；
9）Judge bar heating, upsetting formation, whole cooling three processes simulation result practical reasonability, if practical close
Reason then retains bar heating, upsetting formation, the current process parametric scheme for integrally cooling down three processes, otherwise abandons bar and adds
The current process parametric scheme of heat, upsetting formation, whole cooling three processes.
Preferably, step 8）Further include the steps that technological parameter scheme collection is added in current process parametric scheme, it is specific to walk
Suddenly include：
S1）By current process parametric scheme and its bar heating, the simulation result addition of upsetting formation, whole cooling three processes
Technological parameter scheme collection；
S2）Judge whether the technological parameter amount of projects that technological parameter scheme is concentrated has reached predetermined threshold value, if reaching pre-
If threshold value, then redirects and execute step S3）；Otherwise, it redirects and executes step 2）Continue to obtain new current process parametric scheme and its
Bar heating, upsetting formation, the simulation result for integrally cooling down three processes；
S3）For the technological parameter scheme that technological parameter scheme is concentrated, by its bar heating, upsetting formation, whole cooling three
The strain of torsion bar shaft end stress, metal streamline, geometric dimension, mold stresses and equipment load in the simulation result of process carry out
Comprehensive assessment and comparative analysis, to select best technological parameter scheme to be exported as final Optimizing Process Parameters scheme.
Preferably, step 3）The mode of heating of middle setting is that short distance heat radiation mode heats.
Preferably, step 3）The trellis-type used when middle grid division is Overlay Hex.
Anti-side rolling torsion rod axis for railway vehicle upset forging process simulating analysis of the present invention realizes anti-side rolling torsion rod jumping-up
The simulation reconstruction of the full process of technical process, during reproducing upset forging process, every internal characteristics of torsion bar shaft（As ess-strain,
Metal streamline etc.）And external feature（Such as rod piece leading edge deformation）And the situations of change such as mold stresses, equipment load.With existing skill
Art is compared, and anti-side rolling torsion rod axis for railway vehicle upset forging process simulating analysis tool of the present invention has the advantage that：
1, the simulation reconstruction of the full process of anti-side rolling torsion rod upset forging process process is realized.During reproducing upset forging process, torsion bar shaft
Every internal characteristics（Such as ess-strain, metal streamline）And external feature（Such as rod piece leading edge deformation）And mold stresses,
The situations of change such as equipment load intuitively analyze the formation mechenism of defect during upset forging process.
2, the present invention can be based on model and adjust different technical parameters scheme, to the strain of torsion bar shaft end stress, metal stream
Line, geometric dimension, mold stresses and equipment load carry out comprehensive assessment and comparative analysis, realize the optimization design of technological parameter.
3, the present invention can effectively reduce process trial number, shorten the trial-production period, reduce process costs, promote product work
Skill manufactures experimently efficiency.
4, the present invention can provide support for upset forging process lectotype selection.
5, the present invention can provide support for upset forging process mold design and material selection.
Description of the drawings
Fig. 1 is the basic procedure schematic diagram of present invention method.
Specific implementation mode
As shown in Figure 1, the implementation step of the present embodiment anti-side rolling torsion rod axis for railway vehicle upset forging process simulating analysis
Suddenly include：
1）Upset forging process is heated by sequential breakdown is carried out for bar（Heating）, upsetting formation（Forging）, it is whole cooling
（Cooling）Three processes and the technical papers for obtaining three processes obtain the stick involved by three processes according to technical papers
The dimensional parameters and material trademark of material, heating mould, mandril, heading, cavity plate, fixing mould；
2）Establish bar, heating mould, mandril, heading, cavity plate, fixing mould geometrical model, and according in technical papers
Parameter completes the assembly of bar and heating mould, cavity plate and fixing mould；
3）A bar heating process is created in forming process simulation analysis software, by the bar assembled and heating mould
Geometrical model imports, and mode of heating is arranged, and grid division defines streamline, material properties to bar, establishes bar Heating Simulation mould
The technological parameter of type, setting bar heating process carries out bar heating process simulation；In the present embodiment, step 3）Middle setting adds
Hot mode is that short distance heat radiation mode heats；Step 3）The trellis-type used when middle grid division is Overlay Hex；
4）Read bar heating process simulation when bar Temperature Distribution and judge whether it is consistent with technological temperature, and if technique
Temperature is consistent, then exports the simulation result of bar heating process, redirects and executes step 5）；Otherwise bar heating process is changed extremely
One item missing technological parameter, the technological parameter of the bar heating process include heating time, heated perimeter, control heating temperature with
And heating region, it redirects and executes step 4）；
5）Upsetting formation process is created in forming process simulation analysis software, by the mandril assembled, heading, cavity plate
Geometrical model import, and import heating process bar geometrical model be used as workpiece, be arranged heading equipment moving drive class
Type is hydraulic press, and setting stops when reaching specified stroke, and workpiece uses the grid of previous step heating process simulation, to cavity plate and work
Part definition material attribute establishes upsetting formation process simulation model；In the present embodiment, forming process simulation analysis software is specifically adopted
With Simufact softwares；
6）Upsetting formation process simulation is carried out, it is inherent special to obtain the items of workpiece and cavity plate in the forming process of jumping-up process simulation
External feature and equipment load seek peace with the situation of change of heading stroke, the internal characteristics include ess-strain and metal stream
Line, the external feature include deformation and temperature；Judge that whether metal streamline occur disorderly in the forming process of jumping-up process simulation
Disorderly or workpiece fills discontented or concave die in cavity plate and bursts problem, if there is any of the above-described problem, then changes jumping-up
The technological parameter of the technological parameter of forming process, the upsetting formation process includes that mold cavity, heading stroke and bar are straight
Diameter, if only change mold cavity, one in heading stroke the two or all if redirect and execute step 6）If changing stick
Material diameter, which then redirects, executes step 2）；Otherwise, the simulation result of export jumping-up process simulation, redirects and executes step 7）；
7）A whole cooling process is created in forming process simulation analysis software, exports the torsion bar shaft of upsetting formation process,
And the geometrical model of fixing mould is imported, it sets fixing mould and the unformed end of torsion bar shaft to Glue, net is divided to torsion bar shaft
Lattice, and definition material attribute establish whole cooling procedure simulation model；
8）The technological parameter of whole cooling process is set and carries out whole cooling process simulation, reads torsion bar shaft size after cooling,
Judge whether torsion bar shaft size after cooling meets design requirement, whole cooling process is corrected if being unsatisfactory for design requirement
The technological parameter of technological parameter, the entirety cooling process includes cooling tool structure, air-cooled rate, bar diameter, works as size
The technological parameter of modified whole cooling process includes modification bar diameter when deviation is more than predetermined threshold value, and cold correcting entirety
But it is redirected after the technological parameter of process and executes step 2）；The modified entirety cooling process when dimensional discrepancy is less than predetermined threshold value
Technological parameter include one in cooling tool structure, air-cooled rate two or all, and correcting whole cooling process
Technological parameter after redirect execute step 8）；If meeting design requirement, the simulation result of whole cooling process is exported, and
It redirects and executes step 8）；
9）Judge bar heating, upsetting formation, whole cooling three processes simulation result practical reasonability, if practical close
Reason then retains bar heating, upsetting formation, the current process parametric scheme for integrally cooling down three processes, otherwise abandons bar and adds
The current process parametric scheme of heat, upsetting formation, whole cooling three processes.
In the present embodiment, step 8）Further include the steps that technological parameter scheme collection, tool is added in current process parametric scheme
Body step includes：
S1）By current process parametric scheme and its bar heating, the simulation result addition of upsetting formation, whole cooling three processes
Technological parameter scheme collection；
S2）Judge whether the technological parameter amount of projects that technological parameter scheme is concentrated has reached predetermined threshold value, if reaching pre-
If threshold value, then redirects and execute step S3）；Otherwise, it redirects and executes step 2）Continue to obtain new current process parametric scheme and its
Bar heating, upsetting formation, the simulation result for integrally cooling down three processes；
S3）For the technological parameter scheme that technological parameter scheme is concentrated, by its bar heating, upsetting formation, whole cooling three
The strain of torsion bar shaft end stress, metal streamline, geometric dimension, mold stresses and equipment load in the simulation result of process carry out
Comprehensive assessment and comparative analysis, to select best technological parameter scheme to be exported as final Optimizing Process Parameters scheme.
S1 through the above steps）~S3）, realize based on the present embodiment anti-side rolling torsion rod axis for railway vehicle upset forging process
The step 1 of simulating analysis）~step 9）Iteration optimization, to select best technological parameter scheme as final excellent
Chemical industry skill parametric scheme exports.
In conclusion the present embodiment anti-side rolling torsion rod axis for railway vehicle upset forging process simulating analysis is by plasticity power
Theory and moulding process finite element emulation software, realize the analog simulation of the full process of torsion bar shaft upsetting process process.It reproduces
During upset forging process, every internal characteristics of torsion bar shaft（Such as ess-strain, metal streamline）And external feature（Such as rod piece head
Portion deforms）Situation of change, the formation mechenism of defect during torsion bar shaft upset forging process can be intuitively analyzed by these features,
The optimization design that technological parameter is realized to the comparative analysis under different technical parameters can solve current upset forging process trial-production number
More, the production cycle is long, the high problem of manufacturing cost, effectively reduces the risk of trial-production experiment, substantially reduces upset forging process
Parameter determines the period, significantly reduces the production cost of torsion bar shaft, is quickly introduced to the market for torsion bar shaft product and provides strong branch
It holds.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (4)
1. a kind of anti-side rolling torsion rod axis for railway vehicle upset forging process simulating analysis, it is characterised in that implementation steps include：
1）Upset forging process is bar heating, upsetting formation, whole cooling three processes and obtains three by sequential breakdown is carried out
The technical papers of process, according to technical papers obtain three processes involved by bar, heating mould, mandril, heading, cavity plate,
The dimensional parameters and material trademark of fixing mould；
2）Establish bar, heating mould, mandril, heading, cavity plate, fixing mould geometrical model, and according in technical papers
Parameter completes the assembly of bar and heating mould, cavity plate and fixing mould；
3）A bar heating process is created in forming process simulation analysis software, by the bar assembled and heating mould
Geometrical model imports, and mode of heating is arranged, and grid division defines streamline, material properties to bar, establishes bar Heating Simulation mould
The technological parameter of type, setting bar heating process carries out bar heating process simulation；
4）Read bar heating process simulation when bar Temperature Distribution and judge whether it is consistent with technological temperature, and if technique
Temperature is consistent, then exports the simulation result of bar heating process, redirects and executes step 5）；Otherwise bar heating process is changed extremely
One item missing technological parameter, the technological parameter of the bar heating process include heating time, heated perimeter, control heating temperature with
And heating region, it redirects and executes step 4）；
5）Upsetting formation process is created in forming process simulation analysis software, by the mandril assembled, heading, cavity plate
Geometrical model import, and import heating process bar geometrical model be used as workpiece, be arranged heading equipment moving drive class
Type is hydraulic press, and setting stops when reaching specified stroke, and workpiece uses the grid of previous step heating process simulation, to cavity plate and work
Part definition material attribute establishes upsetting formation process simulation model；
6）Upsetting formation process simulation is carried out, it is inherent special to obtain the items of workpiece and cavity plate in the forming process of jumping-up process simulation
External feature and equipment load seek peace with the situation of change of heading stroke, the internal characteristics include ess-strain and metal stream
Line, the external feature include deformation and temperature；Judge that whether metal streamline occur disorderly in the forming process of jumping-up process simulation
Disorderly or workpiece fills discontented or concave die in cavity plate and bursts problem, if there is any of the above-described problem, then changes jumping-up
The technological parameter of the technological parameter of forming process, the upsetting formation process includes that mold cavity, heading stroke and bar are straight
Diameter, if only change mold cavity, one in heading stroke the two or all if redirect and execute step 6）If changing stick
Material diameter, which then redirects, executes step 2）；Otherwise, the simulation result of export jumping-up process simulation, redirects and executes step 7）；
7）A whole cooling process is created in forming process simulation analysis software, exports the torsion bar shaft of upsetting formation process,
And the geometrical model of fixing mould is imported, it sets fixing mould and the unformed end of torsion bar shaft to Glue, net is divided to torsion bar shaft
Lattice, and definition material attribute establish whole cooling procedure simulation model；
8）The technological parameter of whole cooling process is set and carries out whole cooling process simulation, reads torsion bar shaft size after cooling,
Judge whether torsion bar shaft size after cooling meets design requirement, whole cooling process is corrected if being unsatisfactory for design requirement
The technological parameter of technological parameter, the entirety cooling process includes cooling tool structure, air-cooled rate, bar diameter, works as size
The technological parameter of modified whole cooling process includes modification bar diameter when deviation is more than predetermined threshold value, and cold correcting entirety
But it is redirected after the technological parameter of process and executes step 2）；The modified entirety cooling process when dimensional discrepancy is less than predetermined threshold value
Technological parameter include one in cooling tool structure, air-cooled rate two or all, and correcting whole cooling process
Technological parameter after redirect execute step 8）；If meeting design requirement, the simulation result of whole cooling process is exported, and
It redirects and executes step 8）；
9）Judge bar heating, upsetting formation, whole cooling three processes simulation result practical reasonability, if practical close
Reason then retains bar heating, upsetting formation, the current process parametric scheme for integrally cooling down three processes, otherwise abandons bar and adds
The current process parametric scheme of heat, upsetting formation, whole cooling three processes.
2. anti-side rolling torsion rod axis for railway vehicle upset forging process simulating analysis according to claim 1, feature exist
In step 8）Further include the steps that technological parameter scheme collection is added in current process parametric scheme, specific steps include：
S1）By current process parametric scheme and its bar heating, the simulation result addition of upsetting formation, whole cooling three processes
Technological parameter scheme collection；
S2）Judge whether the technological parameter amount of projects that technological parameter scheme is concentrated has reached predetermined threshold value, if reaching pre-
If threshold value, then redirects and execute step S3）；Otherwise, it redirects and executes step 2）Continue to obtain new current process parametric scheme and its
Bar heating, upsetting formation, the simulation result for integrally cooling down three processes；
S3）For the technological parameter scheme that technological parameter scheme is concentrated, by its bar heating, upsetting formation, whole cooling three
The strain of torsion bar shaft end stress, metal streamline, geometric dimension, mold stresses and equipment load in the simulation result of process carry out
Comprehensive assessment and comparative analysis, to select best technological parameter scheme to be exported as final Optimizing Process Parameters scheme.
3. anti-side rolling torsion rod axis for railway vehicle upset forging process simulating analysis according to claim 1, feature exist
In step 3）The mode of heating of middle setting is that short distance heat radiation mode heats.
4. anti-side rolling torsion rod axis for railway vehicle upset forging process simulating analysis according to claim 1, feature exist
In step 3）The trellis-type used when middle grid division is Overlay Hex.
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| CN113901599A (en) * | 2021-08-25 | 2022-01-07 | 山东大学 | Feature-based micro-part molding simulation method and system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110717272A (en) * | 2019-10-11 | 2020-01-21 | 内蒙古第一机械集团股份有限公司 | Coupling simulation method for material forming and modifying process |
| CN110717272B (en) * | 2019-10-11 | 2023-06-09 | 内蒙古第一机械集团股份有限公司 | Coupling simulation method for material forming and modifying process |
| CN113901599A (en) * | 2021-08-25 | 2022-01-07 | 山东大学 | Feature-based micro-part molding simulation method and system |
| CN113901599B (en) * | 2021-08-25 | 2025-01-14 | 山东大学 | A feature-based micro-parts forming simulation method and system |
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