CN105095605B - Aircraft catheter fabrication process simulation method - Google Patents
Aircraft catheter fabrication process simulation method Download PDFInfo
- Publication number
- CN105095605B CN105095605B CN201510584041.4A CN201510584041A CN105095605B CN 105095605 B CN105095605 B CN 105095605B CN 201510584041 A CN201510584041 A CN 201510584041A CN 105095605 B CN105095605 B CN 105095605B
- Authority
- CN
- China
- Prior art keywords
- conduit
- aircraft
- simulation
- catheter fabrication
- processed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Media Introduction/Drainage Providing Device (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The present invention provides a kind of aircraft catheter fabrication process simulation method, comprising the following steps: 1) carries out bending machine according to pipe size information to be processed, die parametersization match；2) process path planning；3) motion simulation checks interference；4) project setting is carried out according to simulation result.This method has the characteristics that accuracy is high, speed is fast, can be used for analysis of aircraft catheter fabrication process program, provides foundation for catheter fabrication file correctness.The present invention has preferable practical value and wide application prospect in aircraft catheter fabrication technical field.
Description
Technical field
The present invention relates to a kind of aircraft catheter fabrication process simulation methods to belong to for working out aircraft catheter fabrication file
Aircraft digital advanced manufacturing technology field.
Background technique
The automation of the Accurate Shaping and production process of conduit not only may be implemented in numerical control conduit Accurate Shaping technology, but also
It meets to pipe fitting bending high-precision, high-performance, high efficiency and digitized processing request, therefore in the high-tech of aerospace
Field, numerical control guiding-tube bend technology gradually instead of traditional conduit technique, occupy critical role.
Compared with numerical control cutting processing, structure is complicated for CNC tube bending machine, including tens moving components, in catheter fabrication mistake
It is dangerous in interference that there is more serious collisions in journey.It is formed and just in curved pipe during aircraft catheter fabrication
Part grand movement, makes it with lathe, mold and fixture and a possibility that work ground, workshop collide is very big.In order to
Guarantee safety, improve production efficiency, reduces production cost, it is necessary to which stringent examination is carried out to the NC program of conduit.While with
The application of the light-weighted development of product, numerical control catheter device increasingly increases, for different size, the conduit of material in actual production
Part needs to carry out a large amount of pre-stage test and repeatedly mode transfer process, takes time and effort, therefore the emulation to aircraft catheter fabrication process
Demand is increasingly urgent to.
Summary of the invention
The object of the present invention is to provide a kind of aircraft catheter fabrication process simulation method, this method have computational efficiency it is high,
It is stable, it the features such as error is small, solves the critical problem of aircraft catheter fabrication file quick obtaining, effectively demonstrates
The reasonability of conduit process improves the acquisition efficiency of aircraft catheter fabrication data.
The present invention is implemented by the following technical programs: aircraft catheter fabrication process simulation method, comprising the following steps:
1) bending machine is carried out according to pipe size information to be processed, die parametersization match；
2) process path planning；
3) motion simulation checks interference；
4) project setting is carried out according to simulation result.
The step 1) includes two large divisions, one is pipe size information to be processed is obtained, the second is arrangement bending machine,
Mold range of work database and mold required for matching conduit to be processed according to the range of work of different molds.It is described to obtain
Take pipe size information to be processed specifically, according to the structure tree information of part, by way of fixed directory search, successively
It filters out the outer diameter of conduit, inner wall, wall thickness, bending radius, material information and stores, provide foundation for matching bending machine, mold.
The step 2 specifically: assuming that conduit form is L, time t, the step-length being directly fed is n, Space Rotating
Step-length is n1, it is n around the curved step-length of mould2, Y is straight line, and B is Space Rotating angle, and C is around mould bending angle, L0For upper a period of time
The form for carving conduit, then have:
A, as nt≤Y, straight-line feed, L=nt；
As nt > Y, b is entered step；
If B=0 b, or (t-Y/n) * n1When > B, c is entered step；
When B ≠ 0, (t-Y/n) * n1When≤B, Space Rotating, L rotates B around Y-axis1, wherein B1=(t-Y/n) * n1；
C, as C ≠ 0, (t-Y/n-B/n1) * n2It when≤C, is bent around mould, L chooses to install C about the z axis1, wherein C1=n2* (t-Y/n-B/
n1)；
If C=0 or (t-Y/n-B/n1) * n > C when, the movement of this group terminates, complete one group of YBC movement at this time, it can thus be concluded that
The conduit at each moment is formed.
The specific simulation process of the step 3) is expressed as follows:
S1, for a certain emulator command M, at a time T, adds each control point P of conduit1(X1, Y1, Z1), then phase
Two control point P of neighbouriAnd Pi+1The line segment L of compositioniThere is following parameter expression:
X=X1+ t,* (Xi+1-X1)；
Y=Y1+ t,* (Yi+1-Y1)；
Z=Z1+ t,* (Zi+1-Z1)；
0≤t,≤1；I=0,1 ..., n-1；
Then line segment L is found outiIt obtains and hands over if intersection point exists with the intersection point on simulation model each in simulated environment surface
Point value turns S4；Otherwise, P is sought1It is directed toward Pi+1Ray and simulated environment in model surface first imaginary intersection point, t at this time,
> 1, is denoted as t0, into S2, enter S if ray and simulated environment are without intersection point3；
S2, by obtain coordinate find out t,From 1 to t0Point-to-point transmission distance L and ray P1Pi+1With the angle of object plane
For α, if the outer diameter of conduit is r, if L*tan α < r, turns S4, otherwise return to S1；
S3If, in ray and simulated environment object minimum range D < r, enter S4, otherwise return to S1；
S4, by this section of conduit hypostazation, carry out entity intersection operation with the model in simulated environment, seek interference region.
If the step 4) is carried out according to simulation result, project setting, emulation has interference for the first time, conduit is carried out anti-
To machining simulation, if still there is interference, conduit is redesigned.
Beneficial effects of the present invention: the present invention has the characteristics that accuracy is high, speed is fast, can be used for analysis of aircraft conduit and adds
Work process program provides foundation for catheter fabrication file correctness.The present invention has in aircraft catheter fabrication technical field
Preferable practical value and wide application prospect.
Detailed description of the invention
Fig. 1 is aircraft catheter fabrication process simulation flow chart of the present invention.
Fig. 2 is the schematic diagram of CNC tube bending machine kinematic axis Y, B, C.
Fig. 3 is the structure diagram of pressing mold.
Fig. 4 is the structure diagram of clamping.
Fig. 5 is the structure diagram of bending die.
Fig. 6 is conduit simulation object model structure block diagram of the present invention.
Specific embodiment
Fig. 1 is the detailed process of aircraft catheter fabrication process simulation method proposed by the present invention, and this method is realized main
Step includes: 1) to carry out bending machine, die parametersization matching according to pipe size information to be processed；2) process path is advised
It draws；3) motion simulation checks interference；4) project setting is carried out according to simulation result.
The step 1) carries out bending machine according to the dimension information of conduit to be processed, die parametersization match, and includes (1)
Obtain pipe size information to be processed；(2) bending machine, mold range of work database are arranged；Wherein described (1) obtains to be added
Work pipe size information successively filters out conduit by way of fixed directory search according to the structure tree information of part
Outer diameter, inner wall, wall thickness, bending radius, material information simultaneously store, and provide foundation for matching bending machine, mold；(2) are whole
Bending machine, mold range of work database are managed, wherein bending machine is there are many model, and the bending machine of different model its range of work is not
Together, the normal structure of a set of catheter mold is mainly made of five part such as bending die, clamping, pressing mold, plug, Anti-wrinkling board, work
When its action process are as follows: into core, clamping clamps tubing and rotates together with bending die plug, and it is curved with tubing that pressing mold compresses tubing
Song two follows, and Anti-wrinkling board is fixed, and after conduit angle reaches set angle, plug is exited, and pressing mold, clamping unclamp multiple
Position, completes set, and CNC tube bending machine kinematic axis Y, B, C is as shown in Figure 2.
Anti-wrinkling mould can be generated by pipe fitting blank reverse modeling with the groove slightly larger than pipe fitting diameter, tool in machining simulation
Depending on production requirement, plug mainly plays a supportive role body groove diameter, and diameter dimension is generally slightly smaller than pipe internal diameter, adds
Work emulation is of less demanding to its, and the preparation stage can be generated by pipe diameter size reverse modeling.The mold of major parameter is curved
Qu Mo, clamping, pressing mold match mold required for tubing according to the range of work of different molds.
In catheter procedure, pressing mold mainly compresses tubing, and auxiliary pushing bending pipes, and pressing mold movement velocity is theoretically
Should be consistent with the linear velocity that tubing rotates, the structure diagram of pressing mold is as shown in figure 3, tri- sides L1, L2, L3 can be with conduit to be processed
Size carries out parametrization update.The key dimension of clamping design is length dimension, as long as it, which depends on two of product, is bent it
Between straight section length, structure diagram as shown in figure 4, can to L4 ~ L9 therein carry out Parametric designing.Bending die is entirely to lead
The core of pipe mold, device structure diagram is as shown in figure 5, can parameterize it by a, b, d, D, h, φ size in figure.
Step 2) the process path planning.The forming process of conduit is substantially that a catheter shape constantly becomes
The process of change can completely describe its 3D shape using the center line of conduit since conduit is an axisymmetric body, from
And avoid in entity simulation repeatedly modeling cause simulation efficiency it is low, to the demanding drawback of machine performance.
Assuming that conduit form is L, time t, the step-length being directly fed is n, and the step-length of Space Rotating is n1, it is bent around mould
Step-length be n2, Y is straight line, and B is Space Rotating angle, and C is around mould bending angle, L0For the form of last moment conduit, then
Have:
A, as nt≤Y, straight-line feed, L=nt；
As nt > Y, b is entered step；
If B=0 b, or (t-Y/n) * n1When > B, c is entered step；
When B ≠ 0, (t-Y/n) * n1When≤B, Space Rotating, L rotates B around Y-axis1, wherein B1=(t-Y/n) * n1；
C, as C ≠ 0, (t-Y/n-B/n1) * n2It when≤C, is bent around mould, L chooses to install C about the z axis1, wherein C1=n2* (t-Y/n-B/n1)；
If C=0 or (t-Y/n-B/n1) * n > C when, the movement of this group terminates, complete one group of YBC movement at this time, it can thus be concluded that
The conduit at each moment is formed.
Step 3) the motion simulation checks interference.The motion model of catheter fabrication emulation has bending machine, workpiece, leads
Pipe mold, environment, wherein bending machine can be divided into component 1, component 2... component n, and workpiece is catheter blank, and catheter mold can divide
For bending die, pressing mold, clamping, anti-wrinkling mould, plug, environment include wall, ground and other, structural block diagram is as shown in Figure 6.
Content of the interference and collision detection comprising two aspects during numerical control catheter fabrication: be on the one hand collet with it is curved
Interference and collision detects between block, pressure mould and clamping die, and such case is likely to occur in y instruction execution；On the other hand it is
Interference and collision detection in process between continually changing pipe fitting and machine tool component, ground and ambient enviroment object.Collision
The task of detection is exactly to determine at a time t, and whether the geometrical model in simulated environment interferes with moving object, i.e., it
Intersection whether for sky, if occur collision if it needs to be determined that the point of impingement, specific simulation process are expressed as follows:
S1, for a certain emulator command M, at a time T, adds each control point P of conduit1(X1, Y1, Z1), then phase
Two control point P of neighbouriAnd Pi+1The line segment L of compositioniThere is following parameter expression:
X=X1+ t,* (Xi+1-X1)；
Y=Y1+ t,* (Yi+1-Y1)；
Z=Z1+ t,* (Zi+1-Z1)；
0≤t,≤1；I=0,1 ..., n-1；
Then line segment L is found outiIt obtains and hands over if intersection point exists with the intersection point on simulation model each in simulated environment surface
Point value turns S4；Otherwise, P is sought1It is directed toward Pi+1Ray and simulated environment in model surface first imaginary intersection point, t at this time,
> 1, is denoted as t0, into S2, enter S if ray and simulated environment are without intersection point3；
S2, by obtain coordinate find out t,From 1 to t0Point-to-point transmission distance L and ray P1Pi+1With the angle of object plane
For α, if the outer diameter of conduit is r, if L*tan α < r, turns S4, otherwise return to S1；
S3If, in ray and simulated environment object minimum range D < r, enter S4, otherwise return to S1；
S4, by this section of conduit hypostazation, carry out entity intersection operation with the model in simulated environment, seek interference region.
If the step 4) is carried out according to simulation result, project setting, emulation has interference for the first time, conduit is carried out anti-
To machining simulation, if still there is interference, conduit is redesigned.
S4, by this section of conduit hypostazation, carry out entity intersection operation with the model in simulated environment, seek interference region.
If the step 4) is carried out according to simulation result, project setting, emulation has interference for the first time, and conduit is carried out
Reversed machining simulation redesigns conduit if still there is interference.
Claims (2)
1. aircraft catheter fabrication process simulation method, it is characterised in that the following steps are included:
1) bending machine is carried out according to pipe size information to be processed, die parametersization match；
2) process path planning；
3) motion simulation checks interference；
4) project setting is carried out according to simulation result；
The step 1) includes two large divisions, one is pipe size information to be processed is obtained, the second is arranging bending machine, mold
Range of work database and mold required for matching conduit to be processed according to the range of work of different molds；
It is described obtain pipe size information to be processed specifically, according to the structure tree information of part, pass through fixed directory search
Mode, successively filter out the outer diameter of conduit, inner wall, wall thickness, bending radius, material information and store, to match bending machine, mould
Tool provides foundation；
The step 2 specifically: assuming that conduit form is L, time t, the step-length being directly fed is n, the step-length of Space Rotating
For n1, it is n around the curved step-length of mould2, Y is straight line, and B is Space Rotating angle, and C is around mould bending angle, L0It is led for last moment
The form of pipe, then have:
A, as nt≤Y, straight-line feed, L=nt；
As nt > Y, b is entered step；
If B=0 b, or (t-Y/n) * n1When > B, c is entered step；
When B ≠ 0, (t-Y/n) * n1When≤B, Space Rotating, L rotates B around Y-axis1, wherein B1=(t-Y/n) * n1；
C, as C ≠ 0, (t-Y/n-B/n1) * n2It when≤C, is bent around mould, L chooses to install C about the z axis1, wherein C1=n2* (t-Y/n-B/n1)；
If C=0 or (t-Y/n-B/n1) * n > C when, the movement of this group terminates, and one group of YBC movement is completed at this time, it can thus be concluded that per a period of time
The conduit at quarter is formed.
2. aircraft catheter fabrication process simulation method as described in claim 1, it is characterised in that the step 4) is according to emulation
If as a result carrying out, project setting, emulation has interference for the first time, and conduit is carried out reversed machining simulation, if still there is interference, is weighed
New design conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510584041.4A CN105095605B (en) | 2015-09-15 | 2015-09-15 | Aircraft catheter fabrication process simulation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510584041.4A CN105095605B (en) | 2015-09-15 | 2015-09-15 | Aircraft catheter fabrication process simulation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105095605A CN105095605A (en) | 2015-11-25 |
| CN105095605B true CN105095605B (en) | 2019-02-22 |
Family
ID=54576030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510584041.4A Active CN105095605B (en) | 2015-09-15 | 2015-09-15 | Aircraft catheter fabrication process simulation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105095605B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106354919B (en) * | 2016-08-26 | 2019-07-02 | 北京星航机电装备有限公司 | A kind of pipeline digitlization accurate forming method |
| CN107725937B (en) * | 2017-09-08 | 2019-12-24 | 陕西飞机工业（集团）有限公司 | Catheter sampling method |
| CN108363887A (en) * | 2018-03-09 | 2018-08-03 | 西安交通大学 | A kind of multi-level serial optimization method of fluid machinery simulated program |
| CN110688793B (en) * | 2019-09-23 | 2022-04-22 | 成都飞机工业（集团）有限责任公司 | Secondary shape correction quality checking method during assembly of aviation elbow based on finite element |
| CN111400860B (en) * | 2019-12-23 | 2023-07-28 | 北京星航机电装备有限公司 | Pipeline trend workability inspection method |
| CN113414259B (en) * | 2021-06-23 | 2022-08-16 | 江苏理工学院 | Space S-bend anti-wrinkle process for large-size multilayer composite hollow pipe |
| CN115178625A (en) * | 2022-07-08 | 2022-10-14 | 江西洪都航空工业集团有限责任公司 | Method for manufacturing guide pipe sample |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792885A (en) * | 2014-01-20 | 2014-05-14 | 北京理工大学 | Numerical control elbow machining simulation method and device |
| CN104216283A (en) * | 2014-06-13 | 2014-12-17 | 沈阳飞机工业（集团）有限公司 | Rapid generation method of aircraft conduit processing files |
-
2015
- 2015-09-15 CN CN201510584041.4A patent/CN105095605B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792885A (en) * | 2014-01-20 | 2014-05-14 | 北京理工大学 | Numerical control elbow machining simulation method and device |
| CN104216283A (en) * | 2014-06-13 | 2014-12-17 | 沈阳飞机工业（集团）有限公司 | Rapid generation method of aircraft conduit processing files |
Non-Patent Citations (4)
| Title |
|---|
| "基于关系数据库的数控弯管成形有限元仿真管理系统研究与开发";薛艳丽 等;《塑性工程学报》;20100831;第17卷(第4期);"2 系统总体结构"、"3. 3 数控弯管有限元仿真参数管理与传递"、"4 系统应用流程" |
| "数控弯管加工过程仿真系统";吕波 等;《计算机辅助设计与图形学学报》;20051031;第17卷(第10期);"5 碰撞和干涉检测" |
| "数控弯管机机构运动学建模与加工过程仿真技术";周杰文 等;《计算机集成制造系统》;20150228;第21卷(第02期);第434-第442页 |
| "数控弯管过程运动仿真与工序规划技术";李锋;《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》;20070615(第06期);"摘要"、"第二章基于仿真的工序规划过程分析"、"4.1.1弯管仿真对象模型及几何建模技术研究"、"第五章系统开发及实例说明" |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105095605A (en) | 2015-11-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105095605B (en) | Aircraft catheter fabrication process simulation method | |
| CN101539769B (en) | Method for fitting and interpolating G01 code based on quadratic B spline curve | |
| CN103699056A (en) | Real-time smooth transition interpolation method of small high-speed and high-accuracy numerical control machining line segment | |
| CN103272901B (en) | A kind of conduit full pattern gets method processed | |
| CN102211121A (en) | Numerical control precision progressive forming device and precision progressive forming method for plates | |
| CN104216283B (en) | Rapid generation method of aircraft conduit processing files | |
| CN103197606A (en) | Intelligent and numerical control system based on STEP-NC | |
| CN104985482A (en) | Complex surface on-machine test method of five-axis machining center | |
| CN107479503A (en) | A kind of digital control processing screwed hole size simulation comparison inspection method | |
| CN103438844A (en) | Complex surface workpiece positioning method based on particle swarm optimization | |
| CN103631996A (en) | Product structure and process parallel design method based on model maturity | |
| CN109445377A (en) | A kind of dimension deviation control method towards multistage manufacturing processes system | |
| CN104317251A (en) | Three-order NURBS curve real-time interpolation method based on Obrechkoff algorithm | |
| CN110826160A (en) | Rapid three-dimensional modeling method for designing numerical control pipe bending die | |
| CN106959667A (en) | A kind of lathe translation shaft error of perpendicularity modeling method | |
| CN203117724U (en) | Intelligent numerical control system based on STEP-NC (standard for the exchange of product model data-compliant numerical control data interface) | |
| CN114472588B (en) | Novel collision interference detection method in pipe bending process | |
| Solvang et al. | STEP-NC based industrial robot CAM system | |
| Wang et al. | Principle and application of the ball end mill tool radius compensation for NURBS curve swept surfaces based on 3-Axis CNC milling machines | |
| Liu et al. | Inventor-based simulation analysis for NC tube bending process | |
| CN112000063B (en) | Die layered corner cleaning numerical control machining system and technological method thereof | |
| Magambo et al. | The NC machining post-processing technology based on UG | |
| CN117786900B (en) | Mathematical physical method for modeling worm | |
| Wang et al. | The Parametric Design and Simulation for Globoidal Indexing CAM Mechanism | |
| Ruan et al. | CNC machining simulation and optimization based on CATIA and VERICUT |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |