CN103472766A - Method for generating structural part numerical control processing chain with process scheme integrated with processing unit - Google Patents
Method for generating structural part numerical control processing chain with process scheme integrated with processing unit Download PDFInfo
- Publication number
- CN103472766A CN103472766A CN2013104370982A CN201310437098A CN103472766A CN 103472766 A CN103472766 A CN 103472766A CN 2013104370982 A CN2013104370982 A CN 2013104370982A CN 201310437098 A CN201310437098 A CN 201310437098A CN 103472766 A CN103472766 A CN 103472766A
- Authority
- CN
- China
- Prior art keywords
- constraint
- sidewall
- profile
- machining
- broad sense
- 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.)
- Granted
Links
Images
Landscapes
- Numerical Control (AREA)
Abstract
The invention relates to a method for generating a structural part numerical control processing chain with a process scheme integrated with a processing unit. The method comprises a first step of establishing the process scheme and a second step of integrating the process scheme with processing unit to establish the numerical control processing chain. According to the method for generating the structural part numerical control processing chain with the process scheme integrated with the processing unit, by establishing the airplane structural part numerical control processing chain with the process scheme integrated with the processing unit, the process is deeply expressed, and automatic generation of numerical control processing files is finished to achieve full automation of a numerical control programming system.
Description
Technical field
The present invention relates to a kind of structural member digital control processing chain generation method that process program and machining cell merge mutually, in the quick NC Programming System of aircraft complex structural member, for expressing the machining cell structure results model of automated programming process, by with CAM software processing structure tree, forming mapping, directly generate the digital control processing file in the instantiation mode, belong to airplane digital advanced manufacturing technology field.
Background technology
Along with the development of Technology of NC Programming, the CAM(computer-aided manufacturing) system has extremely strong complicated numerical control programming processing power, but simple technologist's the experience employing interactive mode generation digital control processing file that relies on can not meet actual needs.Therefore, require system can set up corresponding model, the degree of depth is expressed technological process, completes the digital control processing file and automatically generates, to realize the full automation of NC Programming System.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of structural member digital control processing chain generation method that process program and machining cell merge mutually, the Flight Structures NC Machining machining chain merged mutually by setting up process program and machining cell, the degree of depth is expressed technological process, complete the digital control processing file and automatically generate, to realize the full automation of NC Programming System.
For overcoming the above problems, concrete technical scheme of the present invention is as follows: a kind of structural member digital control processing chain generation method that process program and machining cell merge mutually, and key step is as follows:
1) process program builds;
2) process program constructs the digital control processing chain mutually with machining cell;
Wherein said process program builds, and comprises two basic technologies: (1) process program model; (2) process program builds rule;
Wherein, the process program model adopts tree structure to mean, comprise part, lathe, station, operation, work step, program and seven grades of nodes of cutter, these seven grades of nodes are set membership successively; Take this tree structure model as basis, in conjunction with the typical process flow of aircraft structure, each class aircraft structure is set up to the process program template; On this basis, process program also must meet certain structure rule, and specific rules is as follows:
(1) priority is at each processing stations, and the design sequence of each work step must meet:
or
wherein
mean " having precedence over ";
(2) existence meets technological requirement for guaranteeing process program, and in process program, some work step must exist, and some work step can not exist, and wherein " 1 " means to exist, and " 0 " means not exist, and " 0 or 1 " means to exist and do not exist and all can;
(3) often in the validity technological process all must be able to participate in cutter actual cut and remove a certain amount of excess stock, effective to guarantee process program, rule is as follows: establishing WP is a certain operation, WS
1, WS
2..., WS
nfor the work step sequence of WP, CT
1, CT
2..., CT
nfor WS
1, WS
2..., WS
ntool sequence, d
1, d
2..., d
n, m
r1, m
r2..., m
rnand m
a1, m
a2..., m
anbe respectively and CT
1, CT
2..., CT
ncorresponding diameter sequence, side direction surplus and axial surplus sequence, the technology characteristics type that MP is the required processing of operation WP, as infructescence WS
1, WS
2..., WS
nthe sub-work step sequence WS of middle existence processing MP
(1), WS
(2)..., WS
(k), and WS
(1), WS
(2)..., WS
(k)corresponding tool diameter and process redundancy sequence are respectively d
(1), d
(2)..., d
(k), m
(r1), m
(r2)..., m
(rk)and m
(a1), m
(a2)..., m
(ak), 1≤k≤n, must meet: d
(1)>=d
(2)>=...>=d
(k), m
(r1)>=m
(r2)>=...>=m
(rk)and m
(a1)>=m
(a2)>=...>=m
(ak);
WS wherein
rmean profile in roughing, under the prerequisite that retains allowance for finish and correction distortion institute made allowance, remove most of process redundancy;
WS
wmean the finishing web, be about to the processing of broad sense web and put in place;
WS
cmean corner processing, remove the surplus of rotation angle position;
WS
ssmean profile in semi-finishing, remove again the part process redundancy of upright side walls face, further discharge distortion;
WS
sfmean outer rim in half finish-milling, remove the part process redundancy of inside and outside edge strip curved surface, further discharge distortion:
WS
fsmean profile in finishing, the upright side walls face that is about to part is machined to design size;
WS
ffmean outer rim in finish-milling, interior outer rim Machining of Curved Surface is to design size;
WS
tmean to cut off processing, be about to part and cut off from workpiece.
Described process program constructs the digital control processing chain mutually with machining cell, comprises the following steps:
1) processing domain structure tree builds: adopt layering to ask the friendship characteristic recognition method, build expansion slot descriptor tree shaped model and processing territory tree structure model, complete the identification of aircraft structure feature, wherein:
1.1) the slot descriptor related description is as follows: complex-shaped surface mould is consisted of profile, island, constraint end face and constraint bottom surface, and profile and island are formed by connecting according to certain sequence by a plurality of sidewall dough sheets, and there is the constraint end face of self and retrain bottom surface, claim that this structure is the broad sense sidewall, be expressed as s, be divided into wheel profile and island-shaped, be expressed as respectively s
p, s
i; On certain station direction, using profile and island as the broad sense sidewall, and with the constraint end face, the constraint bottom surface together with remote definition vallecular cavity feature, and define subsidiary characteristic on the broad sense sidewall, as cave in, muscle, corner, switching angle etc., form the expansion slot descriptor, be expressed as g, its BNF normal form is defined as follows:
<expansion slot descriptor >: :=(<station direction >,<sign >,<constraint end face _ 1 > and,<constraint bottom surface _ 1 >, { bottom surface },<broad sense sidewall > and, { broad sense sidewall }, [father's groove], { pilot trench })
<sign >: :=(<groove > |<opening > |<hole >)
<broad sense sidewall >: :=(<side collection >,<type >,<constraint end face _ 2 > and,<constraint bottom surface _ 2 >, { muscle }, { angle of release }, { closing angle }, { caving in }, { bottom fillet }, { corner }, { chamfering }, [frock] ...)
<type >: :=(<profile > |<island >)
Wherein, expansion slot descriptor and each broad sense sidewall all have constraint end face and constraint bottom surface separately, between them, might not equate, in addition, for ease of the finishing of sidewall node, a broad sense sidewall may belong to a plurality of expansion slot descriptors; Yi Zhi, the expansion slot descriptor meets following character:
1.2) processing domain structure tree related description is as follows: the known expansion slot descriptor of do as one likes matter 2 has defined the three-dimensional communication space of a sealing, this space is to form the excess stock territory that this cavity feature need be removed, therefore, the processing territory of available expansion slot descriptor tree shaped model definition and expression part, result is called the processing territory tree structure model of part, the root node of processing territory tree structure model is work territory σ, the child node of σ is the station direction, under each station, exists several separate and have an a of territory unit of set membership; Territory unit is constraint end face, constraint bottom surface, the side collection of wheel profile broad sense sidewall and the three-dimensional closed material zone that island-shaped broad sense sidewall side collection surrounds of expansion slot descriptor, its BNF normal form can be expressed as:<territory unit >: :=(<profile side collection >, { side, island collection },<constraint end face >,<constraint bottom surface >, [father field unit], { subdomain unit })
2) cutter and territory unit coupling: the technological process of describing according to process program, extract process redundancy and the tool-information of each work step, geometric attribute based on processing territory unit, comprise height, minimum widith, side fillet value and bottom surface fillet value, chooses the machinable slot descriptor feature of cutter;
3) machining cell builds: but according to the working ability of cutter, giving under definition cavity feature, tool geometrical parameter, side direction surplus and axial surplus condition, but the machining area of technical office's cutter, but the different geometric configuration of machining area is arranged again, choose different process operations, and the geometric parameter of calculating processing operation; But have machining area, process operation type, process operation geometric parameter, machined parameters and tool geometrical parameter to form machining cell, in the Flight Structures NC Machining programming, the most frequently used process operation is pocket machining operation and two kinds of contour machining operations; Wherein
The geometric parameter BNF of pocket machining operation is expressed as follows:
Geometric parameter: :=(<constraint end face >,<constraint bottom surface >,<profile is led unit > and, { unit is led on island },<axial surplus >,<radial slack >); Wherein, profile is led unit and island are led unit and are closed-loop, and island lead first number and be more than or equal to 0, in addition, easily knows that above-mentioned geometric element has surrounded the vallecular cavity of a sealing, can complete groove in conjunction with cutter, policing parameter etc. and process the calculating of cutter rail;
The geometric parameter BNF of contour machining operation is expressed as follows:
Geometric parameter: :=(<constraint end face >,<constraint bottom surface >,<profile is led first > and, [initial constraint is first], [stopping constraint unit],<axial surplus >,<radial slack >); Wherein, it is the most important geometric element of contour machining that profile is led unit, both can be closed-loop, also can be open loop, and initial constraint unit and termination constraint unit are for retraining the initial sum final position of cutter in process;
4) process program and machining cell merge: by step 3), obtain every the machinable machining cell sequence of cutter, these machining cell sequences are added under the cutter node of process program, form the tree structure of 8 grades of nodes, this tree structure is the digital control processing chain of aircraft structure, expresses the technological process of part in microcosmic point; There are mapping relations in digital control processing chain and CATIA processing tree-model, under corresponding cutter node, machining cell and process operation between them shine upon one by one, be set in the process operation of instantiation by the process operation parameter by machining cell, can robotization generate the digital control processing file.
The structural member digital control processing chain generation method that this process program and machining cell merge mutually, this model is in the quick NC Programming System of aircraft complex structural member, for expressing the machining cell structure results model of automated programming process, by with CAM software processing structure tree, forming mapping, in the instantiation mode, directly generate the digital control processing file.
The accompanying drawing explanation
Fig. 1 is that the process program tree structure means the model schematic diagram.
Fig. 2 is the slot descriptor schematic diagram.
Fig. 3 is processing territory tree structure model schematic diagram.
Fig. 4 a is work territory meaning figure.
The schematic diagram that Fig. 4 b is territory unit.
Fig. 5 a is pocket machining operation geometric parameter schematic diagram.
Fig. 5 b is contour machining operation geometric parameter schematic diagram.
Fig. 6 is machining cell case decomposition schematic diagram.
Fig. 7 a is digital control processing chain model schematic diagram.
Fig. 7 b is CATIA processing tree-model schematic diagram.
Embodiment
A kind of process program and the structural member digital control processing chain generation method that machining cell merges mutually, it is characterized in that key step as
Under:
1) process program builds;
2) process program constructs the digital control processing chain mutually with machining cell;
Wherein said process program builds, and comprises two basic technologies: (1) process program model; (2) process program builds rule;
Wherein, the process program model adopts tree structure to mean, comprise part, lathe, station, operation, work step, program and seven grades of nodes of cutter, these seven grades of nodes are set membership successively, as shown in Figure 1; Part node in tree structure is root node, and the cutter node is leaf node, and i level node is the father node of i+1 level node, 1≤i≤6.To sum up, provide the BNF normal form that process program means model, as follows:
<part node >: :=(<part type >,<blank type >,<blank material >,<lathe node > } ...)
<lathe node >: :=(<lathe code name >,<control system type >,<station node > } ...)
<station node >: :=(<station direction >,<frock >,<procedure-node > } ...)
<procedure-node >: :=(<operation numbering >,<operation title >,<process segment >,<work step node > } ...)
<work step node >: :=(<work step numbering >,<technology characteristics >,<job operation >,<program node > } ...)
<program node >: :=(<program name >,<cutter node > } ...)
<cutter node >: :=(<geometric parameter >,<process redundancy >,<cutting parameter > ...)
Yi Zhi, above-mentioned model can intactly be expressed the numerical control processing technology flow process, for templating and the quick customization that realizes the numerical control processing technology scheme provides basic model.
Take this tree structure model as basis, in conjunction with the typical process flow of aircraft structure, each class aircraft structure is set up to the process program template; On this basis, process program also must meet certain structure rule, and specific rules is as follows:
(1) priority is at each processing stations, and the design sequence of each work step must meet:
or
wherein
mean " having precedence over ";
(2) existence meets technological requirement for guaranteeing process program, and in process program, some work step must exist, and some work step can not exist, and wherein " 1 " means to exist, and " 0 " means not exist, and " 0 or 1 " means to exist and do not exist and all can;
(3) often in the validity technological process all must be able to participate in cutter actual cut and remove a certain amount of excess stock, effective to guarantee process program, rule is as follows: establishing WP is a certain operation, WS
1, WS
2..., WS
nfor the work step sequence of WP, CT
1, CT
2..., CT
nfor WS
1, WS
2..., WS
ntool sequence, d
1, d
2..., d
n, m
r1, m
r2..., m
rnand m
a1, m
a2..., m
anbe respectively and CT
1, CT
2..., CT
ncorresponding diameter sequence, side direction surplus and axial surplus sequence, the technology characteristics type that MP is the required processing of operation WP, as infructescence WS
1, WS
2..., WS
nthe sub-work step sequence WS of middle existence processing MP
(1), WS
(2)..., WS
(k), and WS
(1), WS
(2)..., WS
(k)corresponding tool diameter and process redundancy sequence are respectively d
(1), d
(2)..., d
(k), m
(r1), m
(r2)..., m
(rk)and m
(a1), m
(a2)..., m
(ak), 1≤k≤n, must meet: d
(1)>=d
(2)>=...>=d
(k), m
(r1)>=m
(r2)>=...>=m
(rk)and m
(a1)>=m
(a2)>=...>=m
(ak);
WS wherein
rmean profile in roughing, under the prerequisite that retains allowance for finish and correction distortion institute made allowance, remove most of process redundancy;
WS
wmean the finishing web, be about to the processing of broad sense web and put in place;
WS
cmean corner processing, remove the surplus of rotation angle position;
WS
ssmean profile in semi-finishing, remove again the part process redundancy of upright side walls face, further discharge distortion;
WS
sfmean outer rim in half finish-milling, remove the part process redundancy of inside and outside edge strip curved surface, further discharge distortion:
WS
fsmean profile in finishing, the upright side walls face that is about to part is machined to design size;
WS
ffmean outer rim in finish-milling, interior outer rim Machining of Curved Surface is to design size;
WS
tmean to cut off processing, be about to part and cut off from workpiece.
Described process program constructs the digital control processing chain mutually with machining cell, comprises the following steps:
1) processing domain structure tree builds: adopt layering to ask the friendship characteristic recognition method, build expansion slot descriptor tree shaped model and processing territory tree structure model, as shown in Figure 2, complete the identification of aircraft structure feature, wherein:
1.1) the slot descriptor related description is as follows: complex-shaped surface mould is consisted of profile, island, constraint end face and constraint bottom surface, and profile and island are formed by connecting according to certain sequence by a plurality of sidewall dough sheets, and there is the constraint end face of self and retrain bottom surface, claim that this structure is the broad sense sidewall, be expressed as s, be divided into wheel profile and island-shaped, be expressed as respectively s
p, s
i; On certain station direction, using profile and island as the broad sense sidewall, and with the constraint end face, the constraint bottom surface together with remote definition vallecular cavity feature, and define subsidiary characteristic on the broad sense sidewall, as cave in, muscle, corner, switching angle etc., form the expansion slot descriptor, be expressed as g, its BNF normal form is defined as follows:
<expansion slot descriptor >: :=(<station direction >,<sign >,<constraint end face _ 1 > and,<constraint bottom surface _ 1 >, { bottom surface },<broad sense sidewall > and, { broad sense sidewall }, [father's groove], { pilot trench })
<sign >: :=(<groove > |<opening > |<hole >)
<broad sense sidewall >: :=(<side collection >,<type >,<constraint end face _ 2 > and,<constraint bottom surface _ 2 >, { muscle }, { angle of release }, { closing angle }, { caving in }, { bottom fillet }, { corner }, { chamfering }, [frock] ...)
<type >: :=(<profile > |<island >)
Wherein, expansion slot descriptor and each broad sense sidewall all have constraint end face and constraint bottom surface separately, between them, might not equate, in addition, for ease of the finishing of sidewall node, a broad sense sidewall may belong to a plurality of expansion slot descriptors; Yi Zhi, the expansion slot descriptor meets following character:
1.2) processing domain structure tree related description is as follows: the known expansion slot descriptor of do as one likes matter 2 has defined the three-dimensional communication space of a sealing, this space is to form the excess stock territory that this cavity feature need be removed, therefore, the processing territory of available expansion slot descriptor tree shaped model definition and expression part, result is called the processing territory tree structure model of part, as shown in Figure 3, the root node of processing territory tree structure model is work territory σ, work territory σ is the summation that blank model deducts zone to be processed after part model, as shown in Fig. 4 a, the child node of σ is the station direction, under each station, exist several separate and have an a of territory unit of set membership, territory unit is constraint end face, constraint bottom surface, the side collection of wheel profile broad sense sidewall and the three-dimensional closed material zone that island-shaped broad sense sidewall side collection surrounds of expansion slot descriptor, its BNF normal form can be expressed as:<territory unit>: :=(<profile side collection>, { side, island collection },<constraint end face>,<constraint bottom surface>, [father field unit], { subdomain unit }), work territory shown in Fig. 4 a can be divided into three territory units, a
1, a
2, a
3, as shown in Figure 4 b,
2) cutter and territory unit coupling: the technological process of describing according to process program, extract process redundancy and the tool-information of each work step, geometric attribute based on processing territory unit, comprise height, minimum widith, side fillet value and bottom surface fillet value, chooses the machinable slot descriptor feature of cutter;
3) machining cell builds: but according to the working ability of cutter, giving under definition cavity feature, tool geometrical parameter, side direction surplus and axial surplus condition, but the machining area of technical office's cutter, but the different geometric configuration of machining area is arranged again, choose different process operations, and the geometric parameter of calculating processing operation; But there are machining area, process operation type, process operation geometric parameter, machined parameters and tool geometrical parameter to form machining cell, are illustrated in figure 6 the machining cell instance graph.In the Flight Structures NC Machining programming, the most frequently used process operation is pocket machining operation and two kinds of contour machining operations; Wherein
The geometric parameter BNF of pocket machining operation is expressed as follows:
Geometric parameter: :=(<constraint end face >,<constraint bottom surface >,<profile is led unit > and, { unit is led on island },<axial surplus >,<radial slack >); As shown in Figure 5 a, wherein, profile is led unit and island are led unit and are closed-loop, and island are led first number and are more than or equal to 0, in addition, easily know that above-mentioned geometric element has surrounded the vallecular cavity of a sealing, can complete groove processing cutter rail in conjunction with cutter, policing parameter etc. and calculate;
The geometric parameter BNF of contour machining operation is expressed as follows:
Geometric parameter: :=(<constraint end face >,<constraint bottom surface >,<profile is led first > and, [initial constraint is first], [stopping constraint unit],<axial surplus >,<radial slack >); As shown in Figure 5 b, wherein, it is the most important geometric element of contour machining that profile is led unit, both can be closed-loop, also can be open loop, and initial constraint unit and termination constraint unit are for retraining the initial sum final position of cutter in process;
4) process program and machining cell merge: by step 3), obtain every the machinable machining cell sequence of cutter, these machining cell sequences are added under the cutter node of process program, form the tree structure of 8 grades of nodes, this tree structure is the digital control processing chain of aircraft structure, as shown in Figure 7a, express the technological process of part in microcosmic point; There are mapping relations in digital control processing chain and CATIA processing tree-model, under corresponding cutter node, machining cell and process operation between them shine upon one by one, by the process operation parameter by machining cell, be set in the process operation of instantiation, can robotization generate the digital control processing file, as shown in Figure 7b.
Claims (1)
1. a process program and the structural member digital control processing chain generation method that machining cell merges mutually, is characterized in that key step
As follows:
1) process program builds;
2) process program constructs the digital control processing chain mutually with machining cell;
Wherein said process program builds, and comprises two basic technologies: (1) process program model; (2) process program builds rule;
Wherein, the process program model adopts tree structure to mean, comprise part, lathe, station, operation, work step, program and seven grades of nodes of cutter, these seven grades of nodes are set membership successively; Take this tree structure model as basis, in conjunction with the typical process flow of aircraft structure, each class aircraft structure is set up to the process program template; On this basis, process program also must meet certain structure rule, and specific rules is as follows:
(1) priority is at each processing stations, and the design sequence of each work step must meet:
or
wherein
mean " having precedence over ";
(2) existence meets technological requirement for guaranteeing process program, and in process program, some work step must exist, and some work step can not exist, and wherein " 1 " means to exist, and " 0 " means not exist, and " 0 or 1 " means to exist and do not exist and all can;
(3) often in the validity technological process all must be able to participate in cutter actual cut and remove a certain amount of excess stock, effective to guarantee process program, rule is as follows: establishing WP is a certain operation, WS
1, WS
2..., WS
nfor the work step sequence of WP, CT
1, CT
2..., CT
nfor WS
1, WS
2..., WS
ntool sequence, d
1, d
2..., d
n, m
r1, m
r2..., m
rnand m
a1, m
a2..., m
anbe respectively and CT
1, CT
2..., CT
ncorresponding diameter sequence, side direction surplus and axial surplus sequence, the technology characteristics type that MP is the required processing of operation WP, as infructescence WS
1, WS
2..., WS
nthe sub-work step sequence WS of middle existence processing MP
(1), WS
(2)..., WS
(k), and WS
(1), WS
(2)..., WS
(k)corresponding tool diameter and process redundancy sequence are respectively d
(1), d
(2)..., d
(k), m
(r1), m
(r2)..., m
(rk)and m
(a1), m
(a2)..., m
(ak), 1≤k≤n, must meet: d
(1)>=d
(2)>=...>=d
(k), m
(r1)>=m
(r2)>=...>=m
(rk)and m
(al)>=m
(a2)>=...>=m
(ak);
WS wherein
rmean profile in roughing, under the prerequisite that retains allowance for finish and correction distortion institute made allowance, remove most of process redundancy;
WS
wmean the finishing web, be about to the processing of broad sense web and put in place;
WS
cmean corner processing, remove the surplus of rotation angle position;
WS
ssmean profile in semi-finishing, remove again the part process redundancy of upright side walls face, further discharge distortion;
WS
sfmean outer rim in half finish-milling, remove the part process redundancy of inside and outside edge strip curved surface, further discharge distortion:
WS
fsmean profile in finishing, the upright side walls face that is about to part is machined to design size;
WS
ffmean outer rim in finish-milling, interior outer rim Machining of Curved Surface is to design size;
WS
tmean to cut off processing, be about to part and cut off from workpiece.
Described process program constructs the digital control processing chain mutually with machining cell, comprises the following steps:
1) processing domain structure tree builds: adopt layering to ask the friendship characteristic recognition method, build expansion slot descriptor tree shaped model and processing territory tree structure model, complete the identification of aircraft structure feature, wherein:
1.1) the slot descriptor related description is as follows: complex-shaped surface mould is consisted of profile, island, constraint end face and constraint bottom surface, and profile and island are formed by connecting according to certain sequence by a plurality of sidewall dough sheets, and there is the constraint end face of self and retrain bottom surface, claim that this structure is the broad sense sidewall, be expressed as s, be divided into wheel profile and island-shaped, be expressed as respectively s
p, s
i; On certain station direction, using profile and island as the broad sense sidewall, and with the constraint end face, the constraint bottom surface together with remote definition vallecular cavity feature, and define subsidiary characteristic on the broad sense sidewall, as cave in, muscle, corner, switching angle etc., form the expansion slot descriptor, be expressed as g, its BNF normal form is defined as follows:
<expansion slot descriptor >: :=(<station direction >,<sign >,<constraint end face _ 1 > and,<constraint bottom surface _ 1 >, { bottom surface },<broad sense sidewall > and, { broad sense sidewall }, [father's groove], { pilot trench })
<sign >: :=(<groove > |<opening > |<hole >)
<broad sense sidewall >: :=(<side collection >,<type >,<constraint end face _ 2 > and,<constraint bottom surface _ 2 >, { muscle }, { angle of release }, { closing angle }, { caving in }, { bottom fillet }, { corner }, { chamfering }, [frock] ...)
<type >: :=(<profile > |<island >)
Wherein, expansion slot descriptor and each broad sense sidewall all have constraint end face and constraint bottom surface separately, between them, might not equate, in addition, for ease of the finishing of sidewall node, a broad sense sidewall may belong to a plurality of expansion slot descriptors; Yi Zhi, the expansion slot descriptor meets following character:
Character 1 on a certain station direction, if there is broad sense sidewall s, its side collection F={f
1, f
2..., f
n, the constraint end face is p
t, the constraint bottom surface is p
b, n>=2, so, by side f
1, f
2..., f
nand p
t, p
bmust form a complete totally enclosed three-dimensional communication space;
Character 2 is on a certain station direction, if there is expansion slot descriptor g, by wheel profile broad sense sidewall s
pand several island-shaped broad sense sidewalls s
i1, s
i2..., s
in, constraint end face p
tand constraint bottom surface p
binstitute forms, so, and s
p, s
i1, s
i2..., s
inand p
t, p
bmust form a complete totally enclosed three-dimensional communication space;
1.2) processing domain structure tree related description is as follows: the known expansion slot descriptor of do as one likes matter 2 has defined the three-dimensional communication space of a sealing, this space is to form the excess stock territory that this cavity feature need be removed, therefore, the processing territory of available expansion slot descriptor tree shaped model definition and expression part, result is called the processing territory tree structure model of part, the root node of processing territory tree structure model is work territory σ, the child node of σ is the station direction, under each station, exists several separate and have an a of territory unit of set membership; Territory unit is constraint end face, constraint bottom surface, the side collection of wheel profile broad sense sidewall and the three-dimensional closed material zone that island-shaped broad sense sidewall side collection surrounds of expansion slot descriptor, its BNF normal form can be expressed as:<territory unit >: :=(<profile side collection >, { side, island collection },<constraint end face >,<constraint bottom surface >, [father field unit], { subdomain unit })
2) cutter and territory unit coupling: the technological process of describing according to process program, extract process redundancy and the tool-information of each work step, geometric attribute based on processing territory unit, comprise height, minimum widith, side fillet value and bottom surface fillet value, chooses the machinable slot descriptor feature of cutter;
3) machining cell builds: but according to the working ability of cutter, giving under definition cavity feature, tool geometrical parameter, side direction surplus and axial surplus condition, but the machining area of technical office's cutter, but the different geometric configuration of machining area is arranged again, choose different process operations, and the geometric parameter of calculating processing operation; But have machining area, process operation type, process operation geometric parameter, machined parameters and tool geometrical parameter to form machining cell, in the Flight Structures NC Machining programming, the most frequently used process operation is pocket machining operation and two kinds of contour machining operations; Wherein
The geometric parameter BNF of pocket machining operation is expressed as follows:
Geometric parameter: :=(<constraint end face >,<constraint bottom surface >,<profile is led unit > and, { unit is led on island },<axial surplus >,<radial slack >); Wherein, profile is led unit and island are led unit and are closed-loop, and island lead first number and be more than or equal to 0, in addition, easily knows that above-mentioned geometric element has surrounded the vallecular cavity of a sealing, can complete groove in conjunction with cutter, policing parameter etc. and process the calculating of cutter rail;
The geometric parameter BNF of contour machining operation is expressed as follows:
Geometric parameter: :=(<constraint end face >,<constraint bottom surface >,<profile is led first > and, [initial constraint is first], [stopping constraint unit],<axial surplus >,<radial slack >); Wherein, it is the most important geometric element of contour machining that profile is led unit, both can be closed-loop, also can be open loop, and initial constraint unit and termination constraint unit are for retraining the initial sum final position of cutter in process;
4) process program and machining cell merge: by step 3), obtain every the machinable machining cell sequence of cutter, these machining cell sequences are added under the cutter node of process program, form the tree structure of 8 grades of nodes, this tree structure is the digital control processing chain of aircraft structure, expresses the technological process of part in microcosmic point; There are mapping relations in digital control processing chain and CATIA processing tree-model, under corresponding cutter node, machining cell and process operation between them shine upon one by one, be set in the process operation of instantiation by the process operation parameter by machining cell, can robotization generate the digital control processing file.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310437098.2A CN103472766B (en) | 2013-09-22 | 2013-09-22 | The structural member digital control processing chain generation method that process program and machining cell merge mutually |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310437098.2A CN103472766B (en) | 2013-09-22 | 2013-09-22 | The structural member digital control processing chain generation method that process program and machining cell merge mutually |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103472766A true CN103472766A (en) | 2013-12-25 |
| CN103472766B CN103472766B (en) | 2015-10-28 |
Family
ID=49797657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310437098.2A Active CN103472766B (en) | 2013-09-22 | 2013-09-22 | The structural member digital control processing chain generation method that process program and machining cell merge mutually |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103472766B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934492A (en) * | 2014-04-04 | 2014-07-23 | 中航沈飞民用飞机有限责任公司 | Milling method capable of evenly releasing milling stress of skin machine |
| CN104007702A (en) * | 2014-06-13 | 2014-08-27 | 沈阳飞机工业（集团）有限公司 | Corner characteristic recognizing and constructing method based on pivot elements |
| CN104050331A (en) * | 2014-06-27 | 2014-09-17 | 东南大学 | Method for establishing three-dimensional machining process model based on process structure tree |
| CN108107844A (en) * | 2017-12-13 | 2018-06-01 | 西安昆仑工业（集团）有限责任公司 | Numerical-control processing method with complicated precipitous Internal periphery curve-surface cavity |
| CN110262400A (en) * | 2019-05-20 | 2019-09-20 | 河源龙记金属制品有限公司 | A kind of processing method of template processing formula generation method and template |
| CN110456735A (en) * | 2019-07-15 | 2019-11-15 | 中国第一汽车股份有限公司 | A kind of general-purpose control system for realizing cold-punching mold numerical control processing control |
| CN111650887A (en) * | 2019-03-04 | 2020-09-11 | 发那科株式会社 | Control system |
| CN111880500A (en) * | 2020-07-29 | 2020-11-03 | 广东韶钢松山股份有限公司 | Steelmaking sample processing method and device based on processing system and processing system |
| CN113419489A (en) * | 2021-06-22 | 2021-09-21 | 上海航天精密机械研究所 | Multi-cavity component rough machining cutter optimization selection method based on genetic algorithm |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030158621A1 (en) * | 2002-02-21 | 2003-08-21 | Mitsubishi Denki Kabushiki Kaisha | Numerical control programming device and numerical control programming method |
| CN101763064A (en) * | 2009-12-08 | 2010-06-30 | 沈阳飞机工业（集团）有限公司 | Numerical control machining process design system and method of aircraft complex components facing process object |
| CN102411333A (en) * | 2011-11-18 | 2012-04-11 | 上海交通大学 | Fast numerical control machining process system for complex parts of airplane |
| JP2012190113A (en) * | 2011-03-09 | 2012-10-04 | Toyota Central R&D Labs Inc | Processing data generation system, and solver program |
-
2013
- 2013-09-22 CN CN201310437098.2A patent/CN103472766B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030158621A1 (en) * | 2002-02-21 | 2003-08-21 | Mitsubishi Denki Kabushiki Kaisha | Numerical control programming device and numerical control programming method |
| CN101763064A (en) * | 2009-12-08 | 2010-06-30 | 沈阳飞机工业（集团）有限公司 | Numerical control machining process design system and method of aircraft complex components facing process object |
| JP2012190113A (en) * | 2011-03-09 | 2012-10-04 | Toyota Central R&D Labs Inc | Processing data generation system, and solver program |
| CN102411333A (en) * | 2011-11-18 | 2012-04-11 | 上海交通大学 | Fast numerical control machining process system for complex parts of airplane |
Non-Patent Citations (2)
| Title |
|---|
| 彭健钧: "基于特征的复杂工件数控加工关键技术研究", 《中国博士学位论文全文数据库工程科技I辑》 * |
| 熊青春，陈才: "基于知识融合的数控加工工艺信息平台研究", 《精密制造与自动化》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934492A (en) * | 2014-04-04 | 2014-07-23 | 中航沈飞民用飞机有限责任公司 | Milling method capable of evenly releasing milling stress of skin machine |
| CN104007702A (en) * | 2014-06-13 | 2014-08-27 | 沈阳飞机工业（集团）有限公司 | Corner characteristic recognizing and constructing method based on pivot elements |
| CN104007702B (en) * | 2014-06-13 | 2017-04-19 | 沈阳飞机工业（集团）有限公司 | Corner characteristic recognizing and constructing method based on pivot elements |
| CN104050331A (en) * | 2014-06-27 | 2014-09-17 | 东南大学 | Method for establishing three-dimensional machining process model based on process structure tree |
| CN108107844A (en) * | 2017-12-13 | 2018-06-01 | 西安昆仑工业（集团）有限责任公司 | Numerical-control processing method with complicated precipitous Internal periphery curve-surface cavity |
| CN108107844B (en) * | 2017-12-13 | 2020-04-10 | 西安昆仑工业（集团）有限责任公司 | Numerical control machining method for cavity with complex steep inner contour curved surface |
| CN111650887A (en) * | 2019-03-04 | 2020-09-11 | 发那科株式会社 | Control system |
| CN111650887B (en) * | 2019-03-04 | 2023-12-08 | 发那科株式会社 | Control system |
| CN110262400A (en) * | 2019-05-20 | 2019-09-20 | 河源龙记金属制品有限公司 | A kind of processing method of template processing formula generation method and template |
| CN110456735A (en) * | 2019-07-15 | 2019-11-15 | 中国第一汽车股份有限公司 | A kind of general-purpose control system for realizing cold-punching mold numerical control processing control |
| CN111880500A (en) * | 2020-07-29 | 2020-11-03 | 广东韶钢松山股份有限公司 | Steelmaking sample processing method and device based on processing system and processing system |
| CN113419489A (en) * | 2021-06-22 | 2021-09-21 | 上海航天精密机械研究所 | Multi-cavity component rough machining cutter optimization selection method based on genetic algorithm |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103472766B (en) | 2015-10-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103472766B (en) | The structural member digital control processing chain generation method that process program and machining cell merge mutually | |
| CN101763069B (en) | Identification method of machining characteristics of complex parts of airplane | |
| CN102085576B (en) | Five-axis linkage variable-axis plunge milling numerically controlled processing method for blade part of integral impeller | |
| CN102799144B (en) | Numerical control processing program transplanting method based on characteristics | |
| CN103336485B (en) | Rapid generating method of milling path of web of airplane structural member | |
| CN103197605B (en) | Method of CNC automatic programming for gear hobbing based on standard template and expression driving | |
| Mawussi et al. | A knowledge base model for complex forging die machining | |
| CN104007696B (en) | Aircraft structural component cavity complex corner residual region tool path generation method | |
| CN104360634A (en) | Skin mirror image milling numerical control program fast generating method based on features | |
| CN103365243B (en) | Method for rapidly generating corner side milling process path | |
| CN104182795A (en) | Numerical control machining cutting parameter optimization method of airplane structural member on the basis of intermediate feature | |
| Waiyagan et al. | Intelligent feature based process planning for five-axis mill-turn parts | |
| CN106960088A (en) | The three-dimensional process model automatic update method changed towards process | |
| CN104090528A (en) | Method suitable for cycloid high-speed milling machining path | |
| CN105739439A (en) | Aircraft structural member complex cavity triaxial machining area automatic construction method | |
| CN104007702A (en) | Corner characteristic recognizing and constructing method based on pivot elements | |
| CN103926879A (en) | Aviation engine crankcase feature recognition method | |
| CN110412938A (en) | The multi-cavity structural part tooling step Sequence Decision method simplified based on Interim | |
| CN104462656B (en) | Aircraft skin part feature recognition methods | |
| CN104407567B (en) | Skin crushed surface reconstruction method based on characteristics | |
| CN104007699A (en) | Method for optimally sorting aircraft structural part automatic programming processing units based on technological process | |
| CN104331020A (en) | Feature-based skin mirror-image milling technology decision method | |
| CN107491036A (en) | Machine tooling consumption control method and machining tool | |
| CN104820744A (en) | Generation method for NURBS tool path in curved surface numerical control machining | |
| CN106001933B (en) | It is cut by laser the optimization method of trimming line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |