CN113253688B - Servo mechanism flame exhaust pipe digital assembly manufacturing method - Google Patents
Servo mechanism flame exhaust pipe digital assembly manufacturing method Download PDFInfo
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- CN113253688B CN113253688B CN202110650957.0A CN202110650957A CN113253688B CN 113253688 B CN113253688 B CN 113253688B CN 202110650957 A CN202110650957 A CN 202110650957A CN 113253688 B CN113253688 B CN 113253688B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
- G05B19/41865—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by job scheduling, process planning, material flow
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/32—Operator till task planning
- G05B2219/32252—Scheduling production, machining, job shop
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses a digital assembly manufacturing method for a servo mechanism exhaust flame pipe, which simulates the actual assembly space of the boundary of two ends of the exhaust flame pipe by utilizing a digital measurement and assembly coordination technology, establishes a digital coordination model based on pipeline assembly, provides the selection and assembly of a pipeline coordination section in a digital virtual space, performs pipeline laser cutting by taking digital coordination parameters as the whole-process manufacturing basis, finally realizes the digital manufacturing of the exhaust flame pipe, greatly improves the assembly production efficiency and shortens the assembly waiting time.
Description
Technical Field
The invention is mainly applied to the technical field of aerospace assembly and manufacturing, and particularly relates to a digital assembly and manufacturing method for a flame exhaust pipe of a servo mechanism.
Background
The servo mechanism flame exhaust pipe is an important part of an aircraft pipeline system, the working environment of the servo mechanism flame exhaust pipe is mainly influenced by comprehensive environments such as high temperature, high pressure, vibration and the like, and if the problems of strength reduction, weakening of sealing performance, structural characteristic change and the like occur in pipeline connection, the normal operation of the whole pipeline system and the servo mechanism can be directly influenced.
At present, the assembly and manufacture of the flame exhaust pipe still depend on a serial production and field sampling manufacturing mode, the method has low digitalization degree, and poor adaptability to assembly boundary conditions is a common problem and mainly appears in the following aspects:
pipeline manufacturing cannot be performed in parallel. The existing mode of flame tube sampling must be carried out on site in a final assembly workshop and must be carried out after the engine and the tail section are assembled and butted, so that the product final assembly waiting time is greatly increased.
Secondly, the boundary condition of pipeline assembly highly depends on the product material object. 2-3 persons are required to work cooperatively each time and transport materials such as welding machines, tools and tools from a manufacturing workshop to a final assembly site, and the processes of repair, spot welding, trial assembly and the like are finished based on field product objects, so that conflict and waste of certain time, manpower and resources are caused.
And thirdly, the requirement on manual experience is high, and the time consumption in the repairing and assembling process is long. The exhaust flame pipe has no compensation capacity, so that the difficulty of field repair is greatly increased, and the small repair of the coordination section can cause a larger inclination angle at the tail end of the pipeline. At present, filing is carried out completely depending on manual experience, the labor intensity is high, the experience requirement is high, the consumed time is long, and a technician with abundant experience needs at least 2 hours for filing.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a digital assembly manufacturing method for a servo mechanism exhaust flame pipe, which simulates the actual assembly space of the boundary of two ends of the exhaust flame pipe by using a digital measurement and assembly coordination technology, establishes a digital coordination model based on pipeline assembly, provides the selection and assembly of a pipeline coordination section in a digital virtual space, performs pipeline laser cutting by taking digital coordination parameters as the whole-process manufacturing basis, finally realizes the digital manufacturing of the exhaust flame pipe, greatly improves the assembly production efficiency and shortens the assembly waiting time.
The technical scheme adopted by the invention for solving the technical problems is as follows: a servo mechanism flame exhaust pipe digital assembly manufacturing method comprises the following steps:
firstly, constructing a measurement coordinate system V1XYZ on a butt joint surface of a horizontally placed engine and a tail section by using laser tracker equipment, and then measuring an outer end circle of a nozzle of a servo mechanism and expressing the outer end circle in a vector form of a proxy model circle Q1;
secondly, constructing a measurement coordinate system V2XYZ on a butt joint surface of the tail section and the engine which are vertically arranged by using laser tracker equipment, and measuring the inner side surface and the circular arc of the tail section flame exhaust pipe orifice, wherein the inner side surface and the circular arc are expressed in a vector form of a proxy model circle Q2;
thirdly, converting the first and second measurement data into three-dimensional models respectively, carrying out digital virtual assembly, and aligning a measurement coordinate system V1XYZ with a measurement coordinate system V2XYZ to obtain boundary conditions at two ends of the flame exhaust tube;
fourthly, assembling the joint of the flame exhaust pipe and the transition pipe on a proxy model circle Q1 to obtain a proxy model circle Q3 at the tail end of the transition pipe;
fifthly, guiding the pipe to be repaired into a digital assembly coordination model, assembling the long end of the pipe at the tail section flame exhaust pipe orifice, and ensuring that the central axis passes through the central point of a proxy model circle Q2; the central axis of the short end of the pipe on the other side passes through the central point of a proxy model circle Q3 at the tail end of the transition pipe;
sixthly, adjusting the pipe to a proper position in the digital assembly coordination model to ensure that the short end and the transition pipe are properly overlapped, and the long end can extend out of the wall surface of the tail section and meet the requirement value of the gap;
seventhly, performing coordination implementation on the pipe and the transition pipe in a digital assembly coordination model to obtain the pipe after virtual cutting and size parameters of the pipe;
and eighthly, importing the size parameters of the virtually cut pipe into a three-dimensional laser machine to perform laser cutting on a pipe real object, and finally welding the pipe real object subjected to laser cutting with a pipe joint and a transition pipe real object to complete digital assembly and manufacturing of the flame exhaust pipe.
Compared with the prior art, the invention has the following positive effects:
(1) the invention adopts a parallel production manufacturing mode, can advance the manufacturing time of the flame exhaust pipe, can assemble the pipeline after the final assembly and butt joint are finished, and greatly saves the final assembly waiting time.
(2) The invention adopts the measuring equipment such as the laser tracker and the like to measure the product size, has high measuring precision, can quickly and accurately reflect the characteristic information of the product, and improves the digital manufacturing precision of the product.
(3) The invention eliminates the processes of field repair, spot welding and trial assembly of operators, and avoids conflict and waste of certain time, manpower and resources.
(4) The manufacturing process of the invention carries out production according to the measured data, eliminates the problems of long time consumption and high labor intensity caused by excessively depending on manual experience to carry out production, simultaneously improves the digital manufacturing degree of the product and improves the production efficiency of the product.
The method solves the problem that the assembly height of the pipeline in the aerospace field depends on-site filing, has the characteristics of accurate measurement, data control, strong operability, high efficiency, economy and the like, has good popularization and practical values in similar methods, can generate good economic value after being widely popularized and applied, and has good reference function in the field of segmented pipeline connection and assembly.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of the engine and servo mounting location of the present invention;
FIG. 2 is a schematic view of the position of the tail section and the port of the exhaust port of the present invention;
FIG. 3 is a schematic diagram of boundary conditions at two ends of a three-dimensional model flame exhaust tube according to the present invention;
FIG. 4 is a schematic view of a digital assembly model of the present invention;
FIG. 5 is a schematic diagram of a coordinated implementation of the digital assembly model of the present invention;
FIG. 6 is a schematic view of a laser cutting clamp for the pipe of the present invention;
fig. 7 is a schematic view of the actual assembly of the servo flame exhaust tube of the present invention.
Wherein the reference numerals include: the device comprises an engine 1, an engine and tail section butt joint face 2, a servo mechanism nozzle 3, a tail section 4, a tail section and engine butt joint face 5, a tail section flame exhaust pipe port inner side face 6, a tail section flame exhaust pipe port inner side face arc 7, a pipe joint 8, a transition pipe 9, a pipe to be repaired before performing pipe coordination 10, a pipe after performing pipe coordination 11, a laser cutting positioning tool 12, a pressing block 13 and a servo mechanism flame exhaust pipe 14.
Detailed Description
The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings:
before the engine 1 and the tail section 4 are not horizontally butted, the size of the two-end interface of the exhaust flame pipe of the servo mechanism to be assembled is measured: as shown in fig. 1, the engine 1 is horizontally placed, and a coordinate system based on the butt joint surface 2 is constructed for describing the vector position of the servo nozzle 3; the construction method of the measurement coordinate system V1XYZ comprises the following steps: at least 8 points are measured on the butt joint surface of the engine 1 to construct a YOZ butt joint surface 2, the projection point of the central point constructed by the butt joint holes of four quadrants on the butt joint surface 2 is the origin o1 of the coordinate system, the normal line of the butt joint surface 2 is the X1 axis direction, and the pointing tail (back) is positive; the projection connecting line of the origin o1 and the hole point of the III quadrant on the butt joint surface 2 is in the Y1 axis direction, the pointing direction of the III quadrant is positive, and the Z1 axis is established according to the right-hand rule; constructing a proxy model circle Q1 at no less than 6 points in the circumferential direction of the outer end of the nozzle 3 of the measuring servo mechanism, wherein the circle center position is represented as (642.827, 251.997 and 602.581), and the direction vector is represented as (134.6554, 66.4247 and 336.6763);
as shown in fig. 2, the tail section 4 is vertically disposed, and a coordinate system based on the butt joint surface is constructed for describing the vector position of the flame discharge nozzle of the servo mechanism; the method for constructing the measurement coordinate system V2XYZ comprises the following steps: at least 8 points are measured on the butt joint surface of the tail section 4 to construct a YOZ butt joint surface 5, the projection point of the central point constructed by the butt joint holes of the four quadrants on the butt joint surface 5 is the origin o2 of the coordinate system, the normal of the butt joint surface 5 is the X2 axis direction, and the pointing direction of the tail (lower) is positive; the projection connecting line of the origin o2 and the hole point of the III quadrant on the butt joint surface 5 is in the Y2 axis direction, the pointing direction of the III quadrant is positive, and the Z2 axis is established according to the right-hand rule; and measuring no less than 6 points of the inner side 6 and the arc 7 of the tail section flame exhaust pipe to construct a proxy model circle Q2, wherein the circle center position is represented as (602.614, 553.297 and 877.807), and the direction vector is represented as (45.1464, 67.3537 and 22.5425).
As shown in fig. 3, the measurement data is converted into a three-dimensional model, and digitized virtual assembly is performed, and a measurement coordinate system V1XYZ is aligned with a measurement coordinate system V2XYZ, so as to obtain boundary conditions at two ends of the flame exhaust tube (relative positions shown by the servo nozzle 3 and an inner side arc 7 of the tail section flame exhaust tube port); assembling products of the joint 8 and the transition pipe 9 of the flame exhaust pipe on a proxy model circle Q1, wherein the types of machined parts are all revolving bodies, the essence of the machining parts is that the thickness values of corresponding parts are offset along the normal direction of the proxy model circle, the proxy model circle at the tail end of the transition pipe 9 is Q3, and the residual space is the connecting part of the flame exhaust pipe from the transition pipe 9 to the tail flame exhaust pipe opening arc 7.
As shown in fig. 4, the pipe 10 to be repaired is guided into a digital assembly coordination model, and the long end of the pipe 10 is assembled at the tail section flame exhaust nozzle, so that the central axis passes through the central point of a proxy model circle Q2; the central axis of the short end of the pipe 10 on the other side passes through the central point of a proxy model circle Q3 at the tail end of the transition pipe 9, and the pipe 10 is assembled and coordinated to a proper position, the length of the overlapping area of the short end and the transition pipe 9 is controlled within 10mm, and the long end can extend out of the wall surface of the tail section and meet the requirement of a gap with the wall surface for more than 5 mm. The pipe 10 to be repaired has high consistency through the template tooling manufacturing.
In the digital assembly coordination model, the pipe 10 to be repaired is coordinated and implemented, specifically, the pipe 10 is activated and edited in the assembly environment, and the pipe 11 after coordination and its dimension parameters are obtained by referring to the end proxy model circle Q3 of the transition pipe 9 and performing stretch cutting in the pipe outside direction by the circle normal line, as shown in fig. 5.
As shown in fig. 6, a real object of the pipe 10 is clamped by a pressing block 13 on a positioning tool 12 of a laser cutting platform, the positioning and clamping reference is the long end face of the pipe 10, the size parameter reference of the pipe 11 after coordination implementation obtained in the digital assembly model is consistent with the description of the positioning tool on the laser cutting platform, the long end face of the pipe 11 is taken as the reference for description, and the size parameter of the pipe 11 is led into a three-dimensional laser machine for laser cutting. And welding the laser-cut pipe 11 with the flame exhaust pipe joint 8 and the transition pipe 9 to complete the digital assembly and manufacture of the flame exhaust pipe of the servo mechanism.
The servomechanism exhaust flame tube 14 is delivered to the final assembly and mounted on the servomechanism nozzle 3 as shown in fig. 7. And actually measuring the gap requirement value of the wall surface of the extending tail section of the pipe, and if the circumferential direction of the pipe meets the gap of more than 5mm, determining that the product is qualified, otherwise, determining that the product is unqualified. The pipe 10 to be repaired is re-introduced into the digital assembly coordination model and the above steps are repeated to manufacture the pipe again.
Claims (6)
1. A servo mechanism flame exhaust pipe digital assembly manufacturing method is characterized in that: the method comprises the following steps:
firstly, constructing a measurement coordinate system V1XYZ on a butt joint surface of a horizontally placed engine and a tail section by using laser tracker equipment, and then measuring an outer end circle of a nozzle of a servo mechanism and expressing the outer end circle in a vector form of a proxy model circle Q1;
secondly, constructing a measurement coordinate system V2XYZ on a butt joint surface of the tail section and the engine which are vertically arranged by using laser tracker equipment, and measuring the inner side surface and the circular arc of the tail section flame exhaust pipe orifice, wherein the inner side surface and the circular arc are expressed in a vector form of a proxy model circle Q2;
thirdly, converting the first and second measurement data into three-dimensional models respectively, carrying out digital virtual assembly, and aligning a measurement coordinate system V1XYZ with a measurement coordinate system V2XYZ to obtain boundary conditions at two ends of the flame exhaust tube;
fourthly, assembling the joint of the flame exhaust pipe and the transition pipe on a proxy model circle Q1 to obtain a proxy model circle Q3 at the tail end of the transition pipe;
fifthly, guiding the pipe to be repaired into a digital assembly coordination model, assembling the long end of the pipe at the tail section flame exhaust pipe orifice, and ensuring that the central axis passes through the central point of a proxy model circle Q2; the central axis of the short end of the pipe on the other side passes through the central point of a proxy model circle Q3 at the tail end of the transition pipe;
sixthly, adjusting the pipe to a proper position in the digital assembly coordination model to ensure that the short end and the transition pipe are properly overlapped, and the long end can extend out of the wall surface of the tail section and meet the requirement value of the gap;
seventhly, performing coordination implementation on the pipe and the transition pipe in a digital assembly coordination model, activating the pipe to edit in an assembly environment, referring to a transition pipe end proxy model circle Q3, and performing stretching and cutting to the outside direction of the pipe by using a circular normal line to obtain the virtually cut pipe and size parameters thereof;
and eighthly, importing the size parameters of the virtually cut pipe into a three-dimensional laser machine to perform laser cutting on a pipe real object, and finally welding the pipe real object subjected to laser cutting with a pipe joint and a transition pipe real object to complete digital assembly and manufacturing of the flame exhaust pipe.
2. The digital assembly manufacturing method of the servo mechanism flame exhaust tube according to claim 1, wherein: the first step is that the construction method of the measurement coordinate system V1XYZ is as follows: the center of each connecting hole on the butt joint surface of the engine and the tail section is the origin o1 of the coordinate system, the normal of the butt joint surface is the X1 axis direction, and the pointing direction of the tail section is positive; the line connecting the origin o1 and the III quadrant hole point is Y1 axis direction, pointing to the III quadrant is positive, and the Z1 axis is established according to the right hand rule.
3. The digital assembly manufacturing method of the servo mechanism flame exhaust tube according to claim 1, wherein: and measuring at least 6 points in the circumferential direction of the outer end of the nozzle of the servo mechanism to construct a proxy model circle Q1.
4. The digital assembly manufacturing method of the servo mechanism flame exhaust tube according to claim 1, wherein: the second step is that the construction method of the measurement coordinate system V2XYZ is as follows: the center of each connecting hole on the butt joint surface of the tail section and the engine is the origin o2 of the coordinate system, the normal of the butt joint surface is the X2 axis direction, and the pointing tail part is positive; the line connecting the origin o2 and the III quadrant hole point is Y2 axis direction, pointing to the III quadrant is positive, and the Z2 axis is established according to the right hand rule.
5. The digital assembly manufacturing method of the servo mechanism flame exhaust tube according to claim 1, wherein: and measuring at least 6 points on the inner side surface and the arc of the tail section flame exhaust pipe to construct a proxy model circle Q2.
6. The digital assembly manufacturing method of the servo mechanism flame exhaust tube according to claim 1, wherein: the fourth step is that the method for assembling the joint of the flame exhaust pipe and the transition pipe on the proxy model circle Q1 is as follows: the corresponding part thickness value is offset in the direction normal to the proxy circle Q1.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110650957.0A CN113253688B (en) | 2021-06-11 | 2021-06-11 | Servo mechanism flame exhaust pipe digital assembly manufacturing method |
| PCT/CN2021/125330 WO2022257322A1 (en) | 2021-06-11 | 2021-10-21 | Digital assembly and manufacturing method for flame exhaust pipe of servo mechanism |
| CA3187787A CA3187787C (en) | 2021-06-11 | 2021-10-21 | Digital assembly and manufacturing method for flame exhaust pipe of servo mechanism |
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| CN202110650957.0A CN113253688B (en) | 2021-06-11 | 2021-06-11 | Servo mechanism flame exhaust pipe digital assembly manufacturing method |
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| CN113253688A CN113253688A (en) | 2021-08-13 |
| CN113253688B true CN113253688B (en) | 2021-10-01 |
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| CN113253688B (en) * | 2021-06-11 | 2021-10-01 | 四川航天长征装备制造有限公司 | Servo mechanism flame exhaust pipe digital assembly manufacturing method |
| CN115111453B (en) * | 2022-06-22 | 2023-06-30 | 四川航天长征装备制造有限公司 | Five-way joint size prediction method based on digital manufacturing |
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| Publication number | Publication date |
|---|---|
| CN113253688A (en) | 2021-08-13 |
| WO2022257322A1 (en) | 2022-12-15 |
| CA3187787A1 (en) | 2022-12-15 |
| CA3187787C (en) | 2023-04-25 |
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