6
http Internat Volume Availabl ISSN Pri © IAEM A S ABS S dete stab surf in fi achi Key gene Cite Asse and http: 1. INT Recent total nu geometr challeng feasibili geometr methods Aided D Bahuba boundin Stab several to minim parts co represen Bahuba optimal p://www.iaem tional Journ 8, Issue 7, Ju le online at h int: 0976-63 ME Publicatio SUBAS FOR O Dep STRACT Stable sub a ecting such bility relatio face feature inding poss ieve econom words: eration. e this Artic embly Sequ Technology ://www.i aem TRODUCT trends in D umber of p ries. Findi ging and co ity and stab ric feasibili s [6-9]. Sev Design (CA alendruni an ng box meth bility is one researchers mize the co onsidering h ntation do alendruni pre l assembly s me.com/IJME nal of Mecha uly 2017, pp http://www.ia 340 and ISSN on SEMB OPTIM partment of assembly de subassemb ons between es and invol sible parall mized assem Subassemb cle: D Venk uence Gene y, 8(7), 201 me.com/IJM TION Design For A parts to m ing a valid omplicated t bility for its ity testing t veral resear AD) based e nd Biswal m hods throug e essential s have not c omputationa hard and so oes not ho esented infl sequence p ET/index.asp anical Engin p. 449–454, A aeme.com/IJM N Online: 097 Scopus Ind BLY ID MAL A GEN D f Mechanica etection red blies using p n pair of com lvement of p lel subassem mbly process bly detecti kata Rao. A eration. Int 17, pp. 449MET/issues. a Assembly (D minimize as d assembly task. A valid s practical p through gra rchers tried environmen made efforts gh CAD inte criteria to considered t al time [11-1 oft connect old compl luence of co planning in p 449 neering and Article ID: IJ MET/issues.as 76-6359 dexed DENTIF ASSEM NERAT Venkata R al Engineeri duces the as part concat mponents is physical co mblies duri s. ion, Assem A Subassemb ternational 454. asp?JType=I DFA) encou ssembly eff sequence f d sequence possibility [ aphical meth to extract i nt in order t to test geom erfacing [15 be followe this criteria 13]. Smith tions betwe lete inform onsidering a terms of qu Technology JMET_08_07 asp?JType=IJM FICAT MBLY S TION Rao ing, GMRIT ssembly effo tenation me discussed. onnectors. T ing assemb mbly stabi bly Identific Journal of IJMET&VT urages the e forts, whic for the par must exhib [1-5]. Lots hods and im interference to minimize metric feasi 5-22]. ed while g and few re proposed st een pair of mation due and ignoring uality of re ed y (IJMET) 7_051 MET&VTyp TION M SEQUE T, Rajam, In orts and tim ethod consid The stabilit The propose bly sequence ility, Assem cation Meth f Mechanic Type=8&ITy engineers to ch greatly rts with alt bit two critic of research mproved ma e free matric e the time a ibility of ass generating a esearchers as tability repr parts [11-1 e to narro g assembly esulted assem ditor@iaeme. pe=8&IType= METH ENCE ndia me, in this p dering diffe ty due to ma ed method h e generatio mbly sequ hod for Opt cal Enginee ype=7 owards redu influence tered topolo cal qualities h has been matrix repres ces from C and efforts sembling pa assembly se assumed this resentation 12]. Howev ow catego y stability cr mbly seque .com =7 HOD E paper erent ating helps on to uence timal ering ucing the the part ogy is a s namely done on sentation Computer [10-14]. art using equence, s criteria between ver these orization. riteria on ence and

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International Journal of Mechanical Engineering and Technology (IJMET)Volume 8, Issue 7, JulyAvailable online at ISSN Print: 0976 © IAEME

A SUBASSEMBLY IDENTI

ABSTRACTS

detecstability relations between pair of surface in finachieve economized assembly process.Key words:generationCite this ArticleAssembly Sequence Generationand http://www.i

1. INTRODUCTIONRecent trends in total number of parts to minimize assembly efforts, which greatly influence the geometrieschallenging and complicated task. A feasibility and stability for its practical possibilitygeometric feasibility testing through graphical methods and improved matrix representation methods [Aided Design (CAD) based environment in order to miBahubalendruni and Biswal made efforts to test geometric feasibility of assembling pabounding box methods through CAD interfacing [

Stability is one essential criteria to be followed while generating assembly sequence, several researchers have not considered this criteria and few researchers assumed this criteria to minimizparts considering hard and soft connectiorepresentation does not hold completeBahubalendruni presented influence of considering and ignoring assembly stability criteria on optimal assembly sequence planning in terms of quality of resulted assembly sequence and

http://www.iaeme.com/

International Journal of Mechanical Engineering and Technology (IJMET)Volume 8, Issue 7, JulyAvailable online at http://www.iaeme.com/IJMEISSN Print: 0976-6340 and ISSN Online: 0976

© IAEME Publication

A SUBASSEMBLY IDENTIFOR OPTIMAL

Department of Mechanical Engineering, GMRIT, Rajam, India

ABSTRACT Stable sub assembly detection

detecting such subassemblies stability relations between pair of surface features in finding possible parallel subassemblies during assembly sequence generation to achieve economized assembly process.Key words: generation. Cite this ArticleAssembly Sequence Generationand Technologyhttp://www.iaeme.com/IJME

INTRODUCTIONRecent trends in Dtotal number of parts to minimize assembly efforts, which greatly influence the geometries. Finding a valid assembly sequence for the parts challenging and complicated task. A feasibility and stability for its practical possibilitygeometric feasibility testing through graphical methods and improved matrix representation methods [6-9]. Several researchers tried to extract interference free matrices from Computer Aided Design (CAD) based environment in order to miBahubalendruni and Biswal made efforts to test geometric feasibility of assembling pabounding box methods through CAD interfacing [

Stability is one essential criteria to be followed while generating assembly sequence, several researchers have not considered this criteria and few researchers assumed this criteria to minimize the computational time [parts considering hard and soft connectiorepresentation does not hold complete

balendruni presented influence of considering and ignoring assembly stability criteria on optimal assembly sequence planning in terms of quality of resulted assembly sequence and

http://www.iaeme.com/IJMET/index.

International Journal of Mechanical Engineering and Technology (IJMET)Volume 8, Issue 7, July 2017, pp.

http://www.iaeme.com/IJME6340 and ISSN Online: 0976

Publication

A SUBASSEMBLY IDENTIFOR OPTIMAL

Department of Mechanical Engineering, GMRIT, Rajam, India

table sub assembly detection ting such subassemblies

stability relations between pair of features and involvement

ding possible parallel subassemblies during assembly sequence generation to achieve economized assembly process.

Subassembly detection, Assembly stabilit

Cite this Article: D Venkata RaoAssembly Sequence Generation

Technology, 8(7), 2017, pp.aeme.com/IJME

INTRODUCTION Design For A

total number of parts to minimize assembly efforts, which greatly influence the Finding a valid assembly sequence for the parts

challenging and complicated task. A feasibility and stability for its practical possibilitygeometric feasibility testing through graphical methods and improved matrix representation

]. Several researchers tried to extract interference free matrices from Computer Aided Design (CAD) based environment in order to miBahubalendruni and Biswal made efforts to test geometric feasibility of assembling pabounding box methods through CAD interfacing [

Stability is one essential criteria to be followed while generating assembly sequence, several researchers have not considered this criteria and few researchers assumed this criteria

e the computational time [parts considering hard and soft connectiorepresentation does not hold complete

balendruni presented influence of considering and ignoring assembly stability criteria on optimal assembly sequence planning in terms of quality of resulted assembly sequence and

IJMET/index.asp

International Journal of Mechanical Engineering and Technology (IJMET)2017, pp. 449–454, Article ID: IJM

http://www.iaeme.com/IJME6340 and ISSN Online: 0976

Scopus Indexed

A SUBASSEMBLY IDENTIFOR OPTIMAL ASSEMBLY SEQUENCE

GENERATIOND Venkata Rao

Department of Mechanical Engineering, GMRIT, Rajam, India

table sub assembly detection reduces the assembly efforts and time, in this paper ting such subassemblies using part concatenation method considering

stability relations between pair of components is discussedinvolvement of physical connectors. The proposed method helps

ding possible parallel subassemblies during assembly sequence generation to achieve economized assembly process.

Subassembly detection, Assembly stabilit

D Venkata Rao. A Subassembly Identification Method for Optimal Assembly Sequence Generation. International Journal of Mechanical Engineering

, 8(7), 2017, pp. 449–aeme.com/IJMET/issues.asp?JType=IJMET&VType=8&IType=7

Assembly (DFA)total number of parts to minimize assembly efforts, which greatly influence the

Finding a valid assembly sequence for the parts challenging and complicated task. A valid sequence must exhibit two critical qualities namely feasibility and stability for its practical possibilitygeometric feasibility testing through graphical methods and improved matrix representation

]. Several researchers tried to extract interference free matrices from Computer Aided Design (CAD) based environment in order to miBahubalendruni and Biswal made efforts to test geometric feasibility of assembling pabounding box methods through CAD interfacing [

Stability is one essential criteria to be followed while generating assembly sequence, several researchers have not considered this criteria and few researchers assumed this criteria

e the computational time [11-13parts considering hard and soft connectiorepresentation does not hold complete

balendruni presented influence of considering and ignoring assembly stability criteria on optimal assembly sequence planning in terms of quality of resulted assembly sequence and

asp 449

International Journal of Mechanical Engineering and Technology (IJMET)Article ID: IJM

http://www.iaeme.com/IJMET/issues.asp?JType=IJME6340 and ISSN Online: 0976-6359

Indexed

A SUBASSEMBLY IDENTIFICATIONASSEMBLY SEQUENCE

GENERATIOND Venkata Rao

Department of Mechanical Engineering, GMRIT, Rajam, India

reduces the assembly efforts and time, in this paper using part concatenation method considering

components is discussedof physical connectors. The proposed method helps

ding possible parallel subassemblies during assembly sequence generation to achieve economized assembly process.

Subassembly detection, Assembly stabilit

A Subassembly Identification Method for Optimal International Journal of Mechanical Engineering

–454. asp?JType=IJMET&VType=8&IType=7

ssembly (DFA) encourages the engineers total number of parts to minimize assembly efforts, which greatly influence the

Finding a valid assembly sequence for the parts valid sequence must exhibit two critical qualities namely

feasibility and stability for its practical possibility [1geometric feasibility testing through graphical methods and improved matrix representation

]. Several researchers tried to extract interference free matrices from Computer Aided Design (CAD) based environment in order to miBahubalendruni and Biswal made efforts to test geometric feasibility of assembling pabounding box methods through CAD interfacing [15

Stability is one essential criteria to be followed while generating assembly sequence, several researchers have not considered this criteria and few researchers assumed this criteria

13]. Smith proposed stability representation between parts considering hard and soft connections between pair of parts [11representation does not hold complete information due to narrow categorization.

balendruni presented influence of considering and ignoring assembly stability criteria on optimal assembly sequence planning in terms of quality of resulted assembly sequence and

International Journal of Mechanical Engineering and Technology (IJMET)Article ID: IJMET_08_07_051

asp?JType=IJME

FICATIONASSEMBLY SEQUENCE

GENERATION D Venkata Rao

Department of Mechanical Engineering, GMRIT, Rajam, India

reduces the assembly efforts and time, in this paper using part concatenation method considering

components is discussed. The stability due to of physical connectors. The proposed method helps

ding possible parallel subassemblies during assembly sequence generation to

Subassembly detection, Assembly stabilit

A Subassembly Identification Method for Optimal International Journal of Mechanical Engineering

asp?JType=IJMET&VType=8&IType=7

encourages the engineers total number of parts to minimize assembly efforts, which greatly influence the

Finding a valid assembly sequence for the parts valid sequence must exhibit two critical qualities namely

[1-5]. Lots of research has been done on geometric feasibility testing through graphical methods and improved matrix representation

]. Several researchers tried to extract interference free matrices from Computer Aided Design (CAD) based environment in order to minimize the time and efforts [10Bahubalendruni and Biswal made efforts to test geometric feasibility of assembling pa

5-22]. Stability is one essential criteria to be followed while generating assembly sequence,

several researchers have not considered this criteria and few researchers assumed this criteria Smith proposed stability representation between

ns between pair of parts [11information due to narrow categorization.

balendruni presented influence of considering and ignoring assembly stability criteria on optimal assembly sequence planning in terms of quality of resulted assembly sequence and

[email protected]

International Journal of Mechanical Engineering and Technology (IJMET) 07_051

asp?JType=IJMET&VType=8&IType=7

FICATION METHOD ASSEMBLY SEQUENCE

Department of Mechanical Engineering, GMRIT, Rajam, India

reduces the assembly efforts and time, in this paper using part concatenation method considering

. The stability due to of physical connectors. The proposed method helps

ding possible parallel subassemblies during assembly sequence generation to

Subassembly detection, Assembly stability, Assembly sequence

A Subassembly Identification Method for Optimal International Journal of Mechanical Engineering

asp?JType=IJMET&VType=8&IType=7

encourages the engineers towards reducing the total number of parts to minimize assembly efforts, which greatly influence the

Finding a valid assembly sequence for the parts with altered topology is a valid sequence must exhibit two critical qualities namely

Lots of research has been done on geometric feasibility testing through graphical methods and improved matrix representation

]. Several researchers tried to extract interference free matrices from Computer nimize the time and efforts [10

Bahubalendruni and Biswal made efforts to test geometric feasibility of assembling pa

Stability is one essential criteria to be followed while generating assembly sequence, several researchers have not considered this criteria and few researchers assumed this criteria

Smith proposed stability representation between ns between pair of parts [11-12

information due to narrow categorization. balendruni presented influence of considering and ignoring assembly stability criteria on

optimal assembly sequence planning in terms of quality of resulted assembly sequence and

[email protected]

T&VType=8&IType=7

METHOD ASSEMBLY SEQUENCE

Department of Mechanical Engineering, GMRIT, Rajam, India

reduces the assembly efforts and time, in this paper using part concatenation method considering different

. The stability due to mating of physical connectors. The proposed method helps

ding possible parallel subassemblies during assembly sequence generation to

y, Assembly sequence

A Subassembly Identification Method for Optimal International Journal of Mechanical Engineering

asp?JType=IJMET&VType=8&IType=7

towards reducing the total number of parts to minimize assembly efforts, which greatly influence the

altered topology is a valid sequence must exhibit two critical qualities namely

Lots of research has been done on geometric feasibility testing through graphical methods and improved matrix representation

]. Several researchers tried to extract interference free matrices from Computer nimize the time and efforts [10

Bahubalendruni and Biswal made efforts to test geometric feasibility of assembling pa

Stability is one essential criteria to be followed while generating assembly sequence, several researchers have not considered this criteria and few researchers assumed this criteria

Smith proposed stability representation between 12]. However these

information due to narrow categorization. balendruni presented influence of considering and ignoring assembly stability criteria on

optimal assembly sequence planning in terms of quality of resulted assembly sequence and

[email protected]

T&VType=8&IType=7

METHOD ASSEMBLY SEQUENCE

reduces the assembly efforts and time, in this paper different

mating of physical connectors. The proposed method helps

ding possible parallel subassemblies during assembly sequence generation to

y, Assembly sequence

A Subassembly Identification Method for Optimal International Journal of Mechanical Engineering

towards reducing the total number of parts to minimize assembly efforts, which greatly influence the part

altered topology is a valid sequence must exhibit two critical qualities namely

Lots of research has been done on geometric feasibility testing through graphical methods and improved matrix representation

]. Several researchers tried to extract interference free matrices from Computer nimize the time and efforts [10-14].

Bahubalendruni and Biswal made efforts to test geometric feasibility of assembling part using

Stability is one essential criteria to be followed while generating assembly sequence, several researchers have not considered this criteria and few researchers assumed this criteria

Smith proposed stability representation between ]. However these

information due to narrow categorization. balendruni presented influence of considering and ignoring assembly stability criteria on

optimal assembly sequence planning in terms of quality of resulted assembly sequence and

Page 2: A SUBASSEMBLY IDENTI FICATION METHOD FOR OPTIMAL …iaeme.com/MasterAdmin/uploadfolder/IJMET_08_07_051/IJMET_08_… · partial assembly subset (1 -2 -4) due to partial nature of existent

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computational time [matrix in finding out stable subassemblies in order to perform parallel assembly sequence generation. The proposed method is an attempt to detect stable subassemblies using combined stability matrix.

2. PREREQUISITES In order to generate smatrix is a symmetric matrix created using binary codes (0,1), where “0” represents no surface contact between pair of parts indicated in row and column and whereas “1” represents significant surface contact. types of possibilities namely partial stability, permanent stability due to part mating surfaces and usage of external connectors, which can be indicated with 1, 2 matrix and combined stability matrix for the 7

3. PARTIAL AND PERMANENAn assembly subset is called as partial assembly subset, if at least one part in the subset is partially stable. These subsets further helpful in determining permanent asssequential assembly sequence planning process. There exist two different possibilities of partial subset formulation as stated below.

A Subassembly Identification Method for Optimal Assembly Sequence Generation

http://www.iaeme.com/

computational time [matrix in finding out stable subassemblies in order to perform parallel assembly sequence generation. The proposed method is an attempt to detect stable subassemblies using combined stability matrix.

PREREQUISITES In order to generate smatrix is a symmetric matrix created using binary codes (0,1), where “0” represents no surface contact between pair of parts indicated in row and column and whereas “1” represents

nificant surface contact. types of possibilities namely partial stability, permanent stability due to part mating surfaces and usage of external connectors, which can be indicated with 1, 2 matrix and combined stability matrix for the 7

01010101100110

7654321

21

Figure 1 Liaison Matri

PARTIAL AND PERMANENAn assembly subset is called as partial assembly subset, if at least one part in the subset is partially stable. These subsets further helpful in determining permanent asssequential assembly sequence planning process. There exist two different possibilities of partial subset formulation as stated below.

A Subassembly Identification Method for Optimal Assembly Sequence Generation

http://www.iaeme.com/IJMET/index.

computational time [6]. The literature reveal that no efforts are made using matrix in finding out stable subassemblies in order to perform parallel assembly sequence generation. The proposed method is an attempt to detect stable subassemblies using combined

PREREQUISITES In order to generate stable assembly subsets, liaison and stability matrices are used. Liaison matrix is a symmetric matrix created using binary codes (0,1), where “0” represents no surface contact between pair of parts indicated in row and column and whereas “1” represents

nificant surface contact. Combined stability matrix is a square matrix with three different types of possibilities namely partial stability, permanent stability due to part mating surfaces and usage of external connectors, which can be indicated with 1, 2 matrix and combined stability matrix for the 7

00000000010010000001001011015432

Liaison Matri

PARTIAL AND PERMANENAn assembly subset is called as partial assembly subset, if at least one part in the subset is partially stable. These subsets further helpful in determining permanent asssequential assembly sequence planning process. There exist two different possibilities of partial subset formulation as stated below.

A Subassembly Identification Method for Optimal Assembly Sequence Generation

IJMET/index.asp

]. The literature reveal that no efforts are made using matrix in finding out stable subassemblies in order to perform parallel assembly sequence generation. The proposed method is an attempt to detect stable subassemblies using combined

table assembly subsets, liaison and stability matrices are used. Liaison matrix is a symmetric matrix created using binary codes (0,1), where “0” represents no surface contact between pair of parts indicated in row and column and whereas “1” represents

Combined stability matrix is a square matrix with three different types of possibilities namely partial stability, permanent stability due to part mating surfaces and usage of external connectors, which can be indicated with 1, 2 matrix and combined stability matrix for the 7

Figure 1

010100000001000000111765

Liaison Matrix for Product

PARTIAL AND PERMANENT ASSEMBLY SUBSETSAn assembly subset is called as partial assembly subset, if at least one part in the subset is partially stable. These subsets further helpful in determining permanent asssequential assembly sequence planning process. There exist two different possibilities of partial subset formulation as stated below.

A Subassembly Identification Method for Optimal Assembly Sequence Generation

asp 450

]. The literature reveal that no efforts are made using matrix in finding out stable subassemblies in order to perform parallel assembly sequence generation. The proposed method is an attempt to detect stable subassemblies using combined

table assembly subsets, liaison and stability matrices are used. Liaison matrix is a symmetric matrix created using binary codes (0,1), where “0” represents no surface contact between pair of parts indicated in row and column and whereas “1” represents

Combined stability matrix is a square matrix with three different types of possibilities namely partial stability, permanent stability due to part mating surfaces and usage of external connectors, which can be indicated with 1, 2 matrix and combined stability matrix for the 7-part product show in Figure 1 is listed below.

Figure 1 A 7-Part assembly

roduct Figure 2

T ASSEMBLY SUBSETSAn assembly subset is called as partial assembly subset, if at least one part in the subset is partially stable. These subsets further helpful in determining permanent asssequential assembly sequence planning process. There exist two different possibilities of partial subset formulation as stated below.

A Subassembly Identification Method for Optimal Assembly Sequence Generation

]. The literature reveal that no efforts are made using matrix in finding out stable subassemblies in order to perform parallel assembly sequence generation. The proposed method is an attempt to detect stable subassemblies using combined

table assembly subsets, liaison and stability matrices are used. Liaison matrix is a symmetric matrix created using binary codes (0,1), where “0” represents no surface contact between pair of parts indicated in row and column and whereas “1” represents

Combined stability matrix is a square matrix with three different types of possibilities namely partial stability, permanent stability due to part mating surfaces and usage of external connectors, which can be indicated with 1, 2

part product show in Figure 1 is listed below.

Part assembly

3030030

7654321

21

Figure 2 Stabi

T ASSEMBLY SUBSETSAn assembly subset is called as partial assembly subset, if at least one part in the subset is partially stable. These subsets further helpful in determining permanent asssequential assembly sequence planning process. There exist two different possibilities of

A Subassembly Identification Method for Optimal Assembly Sequence Generation

[email protected]

]. The literature reveal that no efforts are made using matrix in finding out stable subassemblies in order to perform parallel assembly sequence generation. The proposed method is an attempt to detect stable subassemblies using combined

table assembly subsets, liaison and stability matrices are used. Liaison matrix is a symmetric matrix created using binary codes (0,1), where “0” represents no surface contact between pair of parts indicated in row and column and whereas “1” represents

Combined stability matrix is a square matrix with three different types of possibilities namely partial stability, permanent stability due to part mating surfaces and usage of external connectors, which can be indicated with 1, 2 and 3 respectively.

part product show in Figure 1 is listed below.

00000000000010000002002031035432

Stability Matrix

T ASSEMBLY SUBSETS An assembly subset is called as partial assembly subset, if at least one part in the subset is partially stable. These subsets further helpful in determining permanent asssequential assembly sequence planning process. There exist two different possibilities of

A Subassembly Identification Method for Optimal Assembly Sequence Generation

[email protected]

]. The literature reveal that no efforts are made using these stability matrix in finding out stable subassemblies in order to perform parallel assembly sequence generation. The proposed method is an attempt to detect stable subassemblies using combined

table assembly subsets, liaison and stability matrices are used. Liaison matrix is a symmetric matrix created using binary codes (0,1), where “0” represents no surface contact between pair of parts indicated in row and column and whereas “1” represents

Combined stability matrix is a square matrix with three different types of possibilities namely partial stability, permanent stability due to part mating surfaces

and 3 respectively.part product show in Figure 1 is listed below.

000100000001000000313765

lity Matrix for Product

An assembly subset is called as partial assembly subset, if at least one part in the subset is partially stable. These subsets further helpful in determining permanent assembly subset and sequential assembly sequence planning process. There exist two different possibilities of

A Subassembly Identification Method for Optimal Assembly Sequence Generation

[email protected]

these stability matrix in finding out stable subassemblies in order to perform parallel assembly sequence generation. The proposed method is an attempt to detect stable subassemblies using combined

table assembly subsets, liaison and stability matrices are used. Liaison matrix is a symmetric matrix created using binary codes (0,1), where “0” represents no surface contact between pair of parts indicated in row and column and whereas “1” represents

Combined stability matrix is a square matrix with three different types of possibilities namely partial stability, permanent stability due to part mating surfaces

and 3 respectively. Liaison part product show in Figure 1 is listed below.

for Product

An assembly subset is called as partial assembly subset, if at least one part in the subset is embly subset and

sequential assembly sequence planning process. There exist two different possibilities of

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D Venkata Rao

http://www.iaeme.com/IJMET/index.asp 451 [email protected]

Case 1 When appending part exhibits partial stability with respect to all parts in the existent assembly subset irrespective of the nature of the existent assembly subset. Let us consider part-6 to join an existent partial assembly subset (1-4), part-6 is offered only partial stability with respect to part-1 (S(1,6)=1), which results in partial assembly subset (1-4-6). While appending part-4 to assembly subset (1-2), though existent assembly subset is permanent stable, appending part-4 is offered only partial stability with respect to part-1 (S(1,4)=1) results in partial assembly subset (1-2-4).

Case 2 Even though appending part exhibits permanent stability with respect to all parts in the existent assembly subset, if the existent assembly subset is a partially stable the resulted nature will be partially stable. While appending part-2 to assembly subset (1-4), though appending part-2 is offered permanent stability with respect to part-1 (S(1,2)=3) results in partial assembly subset (1-2-4) due to partial nature of existent assembly subset.

An assembly subset is called as permanent assembly subset, when all the parts in the assembly maintain its respective positions with respect to all mating parts irrespective of orientation. This can be achieved when all the parts in the sub assembly exhibit permanent stability. The permanent stable assembly subset can be formed at two different conditions.

Case 3 When appending part exhibits permanent stability with respect to any of the parts in the existent permanent stable assembly subset. Let us consider part-3 to join an existent permanent assembly subset (1-2), part-3 is offered permanent stability with respect to part-2 (S(2,3)=2), which results in permanent assembly subset (1-2-3).

Case 4 If appending part exhibits permanent stability with respect to any of the parts in the existent partially stable assembly subset as long as the partially stable part motions are completely constrained due to the appending part. While appending part-5 to assembly subset (1-4), though existent assembly subset is partially stable, the appending part bring stability to all the unstable parts and results in permanent stable assembly subset (1-4-5).

Table 1 All possible instances of assembly subset generation

Possibility

Existent assembly subset

Nature of the Existent assembly

subset

Appending part

Type of stability of appending part

Resultant

assembly subset

Nature of the

Resultant assembly

subset Case 1 1-2 Permanent 4 S(1,4)=1 Partial 1-2-4 Partial

1-4 Partial 6 S(1,6)=1 Partial 1-4-6 Partial Case 2 1-4 Partial 2 S(1,2)=3 Permanent 1-4-2 Partial Case 3 1-2 Permanent 3 S(2,3)=2 Permanent 1-2-3 Permanent Case 4 1-4 Partial 5 S(1,5)=3 Permanent 1-4-5 Permanent

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4. ASSEMBLY SEQUENCE GEIMPLEMENTATIONThe proposed method generate assembly subsets by appending a nonexistent part/subassembly to an existesting methods. The necessary data to perform assembly predicate testing can be extracted from a product using existing methods [1]. When appending part qualify stability; the method will check for all the possible instances described in sectionwill be stored under two different categories. Therese resulted subsets will be further used to generate next level assembly subsets till the number of parts in assembnumber parts in assembly subset equal to the part count of the chosen product. The proposed method is indicated through flow chart in Figure 2.

Figure 2

During the assembly subset generation if there exist any similar assembly subset with altered sequence, the redundant subset will be identified and erased using assembly indexing method [8].Assembly index values and assembly subset alternateassembly subsets are shown in Table shown in Figure.1 and the resulted intermediate level permanent and partially stable assembly subsets are listed in table

A Subassembly Identification Method for Optimal Assembly Sequence Generation

http://www.iaeme.com/

ASSEMBLY SEQUENCE GEIMPLEMENTATIONThe proposed method generate assembly subsets by appending a nonexistent part/subassembly to an existesting methods. The necessary data to perform assembly predicate testing can be extracted from a product using existing methods [1]. When appending part qualify stability; the method

eck for all the possible instances described in sectionwill be stored under two different categories. Therese resulted subsets will be further used to generate next level assembly subsets till the number of parts in assembnumber parts in assembly subset equal to the part count of the chosen product. The proposed method is indicated through flow chart in Figure 2.

Figure 2 An efficient method of assembly sequence generation through subassembly id

During the assembly subset generation if there exist any similar assembly subset with altered sequence, the redundant subset will be identified and erased using assembly indexing method [8].Assembly index values and assembly subset alternateassembly subsets are shown in Table shown in Figure.1 and the resulted intermediate level permanent and partially stable assembly subsets are listed in table

A Subassembly Identification Method for Optimal Assembly Sequence Generation

http://www.iaeme.com/IJMET/index.

ASSEMBLY SEQUENCE GEIMPLEMENTATION The proposed method generate assembly subsets by appending a nonexistent part/subassembly to an existent assembly subset when it qualify defined assembly predicate testing methods. The necessary data to perform assembly predicate testing can be extracted from a product using existing methods [1]. When appending part qualify stability; the method

eck for all the possible instances described in sectionwill be stored under two different categories. Therese resulted subsets will be further used to generate next level assembly subsets till the number of parts in assembnumber parts in assembly subset equal to the part count of the chosen product. The proposed method is indicated through flow chart in Figure 2.

An efficient method of assembly sequence generation through subassembly id

During the assembly subset generation if there exist any similar assembly subset with altered sequence, the redundant subset will be identified and erased using assembly indexing method [8].Assembly index values and assembly subset alternateassembly subsets are shown in Table shown in Figure.1 and the resulted intermediate level permanent and partially stable assembly subsets are listed in table 1.

A Subassembly Identification Method for Optimal Assembly Sequence Generation

IJMET/index.asp

ASSEMBLY SEQUENCE GENERATION METHOD AND

The proposed method generate assembly subsets by appending a nonexistent tent assembly subset when it qualify defined assembly predicate

testing methods. The necessary data to perform assembly predicate testing can be extracted from a product using existing methods [1]. When appending part qualify stability; the method

eck for all the possible instances described in sectionwill be stored under two different categories. Therese resulted subsets will be further used to generate next level assembly subsets till the number of parts in assembnumber parts in assembly subset equal to the part count of the chosen product. The proposed method is indicated through flow chart in Figure 2.

An efficient method of assembly sequence generation through subassembly id

During the assembly subset generation if there exist any similar assembly subset with altered sequence, the redundant subset will be identified and erased using assembly indexing method [8].Assembly index values and assembly subset alternateassembly subsets are shown in Table 1. The proposed method is implemented on product shown in Figure.1 and the resulted intermediate level permanent and partially stable assembly

A Subassembly Identification Method for Optimal Assembly Sequence Generation

asp 452

NERATION METHOD AND

The proposed method generate assembly subsets by appending a nonexistent tent assembly subset when it qualify defined assembly predicate

testing methods. The necessary data to perform assembly predicate testing can be extracted from a product using existing methods [1]. When appending part qualify stability; the method

eck for all the possible instances described in sectionwill be stored under two different categories. Therese resulted subsets will be further used to generate next level assembly subsets till the number of parts in assembnumber parts in assembly subset equal to the part count of the chosen product. The proposed method is indicated through flow chart in Figure 2.

An efficient method of assembly sequence generation through subassembly id

During the assembly subset generation if there exist any similar assembly subset with altered sequence, the redundant subset will be identified and erased using assembly indexing method [8].Assembly index values and assembly subset alternate

. The proposed method is implemented on product shown in Figure.1 and the resulted intermediate level permanent and partially stable assembly

A Subassembly Identification Method for Optimal Assembly Sequence Generation

NERATION METHOD AND

The proposed method generate assembly subsets by appending a nonexistent tent assembly subset when it qualify defined assembly predicate

testing methods. The necessary data to perform assembly predicate testing can be extracted from a product using existing methods [1]. When appending part qualify stability; the method

eck for all the possible instances described in section-3 and the resulted assembly sets will be stored under two different categories. Therese resulted subsets will be further used to generate next level assembly subsets till the number of parts in assembnumber parts in assembly subset equal to the part count of the chosen product. The proposed

An efficient method of assembly sequence generation through subassembly id

During the assembly subset generation if there exist any similar assembly subset with altered sequence, the redundant subset will be identified and erased using assembly indexing method [8].Assembly index values and assembly subset alternate

. The proposed method is implemented on product shown in Figure.1 and the resulted intermediate level permanent and partially stable assembly

A Subassembly Identification Method for Optimal Assembly Sequence Generation

[email protected]

NERATION METHOD AND

The proposed method generate assembly subsets by appending a nonexistent tent assembly subset when it qualify defined assembly predicate

testing methods. The necessary data to perform assembly predicate testing can be extracted from a product using existing methods [1]. When appending part qualify stability; the method

3 and the resulted assembly sets will be stored under two different categories. Therese resulted subsets will be further used to generate next level assembly subsets till the number of parts in assembly subsets equal to total number parts in assembly subset equal to the part count of the chosen product. The proposed

An efficient method of assembly sequence generation through subassembly id

During the assembly subset generation if there exist any similar assembly subset with altered sequence, the redundant subset will be identified and erased using assembly indexing method [8].Assembly index values and assembly subset alternate possible variants for 2

. The proposed method is implemented on product shown in Figure.1 and the resulted intermediate level permanent and partially stable assembly

A Subassembly Identification Method for Optimal Assembly Sequence Generation

[email protected]

NERATION METHOD AND ITS

The proposed method generate assembly subsets by appending a nonexistent tent assembly subset when it qualify defined assembly predicate

testing methods. The necessary data to perform assembly predicate testing can be extracted from a product using existing methods [1]. When appending part qualify stability; the method

3 and the resulted assembly sets will be stored under two different categories. Therese resulted subsets will be further used to

ly subsets equal to total number parts in assembly subset equal to the part count of the chosen product. The proposed

An efficient method of assembly sequence generation through subassembly identification

During the assembly subset generation if there exist any similar assembly subset with altered sequence, the redundant subset will be identified and erased using assembly indexing

possible variants for 2. The proposed method is implemented on product

shown in Figure.1 and the resulted intermediate level permanent and partially stable assembly

A Subassembly Identification Method for Optimal Assembly Sequence Generation

[email protected]

The proposed method generate assembly subsets by appending a nonexistent tent assembly subset when it qualify defined assembly predicate

testing methods. The necessary data to perform assembly predicate testing can be extracted from a product using existing methods [1]. When appending part qualify stability; the method

3 and the resulted assembly sets will be stored under two different categories. Therese resulted subsets will be further used to

ly subsets equal to total number parts in assembly subset equal to the part count of the chosen product. The proposed

entification

During the assembly subset generation if there exist any similar assembly subset with altered sequence, the redundant subset will be identified and erased using assembly indexing

possible variants for 2-part . The proposed method is implemented on product

shown in Figure.1 and the resulted intermediate level permanent and partially stable assembly

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D Venkata Rao

http://www.iaeme.com/IJMET/index.asp 453 [email protected]

Table 1 Assembly subset generation at intermediate levels

2-Part subsets Alternate sets Assembly Index 3-Part subsets 4-Part subsets

Permanent assembly subsets

1-2 2-1 11 1-(2-3) 1-(2-3)-5 1-5 5-1 10001 1-2-5 1-(2-3)-7 1-7 7-1 1000001 1-2-7 1-2-4-5 2-3 3-2 110 1-4-5 1-2-5-7

1-5-7 1-2-6-7

1-6-7 1-4-5-7

Partial Assembly subsets

1-4 - 1001 1-2-4 1-(2-3)-4 1-6 - 100001 1-2-6 1-(2-3)-6

1-4-6 1-2-4-6

1-4-7 1-2-4-7

1-5-6 1-2-5-6

1-4-5-6

1-4-6-7

1-5-6-7

5. CONCLUSIONS A novel method to generate assembly sequence generation through subassembly detection is proposed and illustrated with an example. Detailed possibilities of stability during subassembly detection is well discussed by considering different possibilities of assembly stabllity instance between pair of parts. The method can be implented for parallel and sequential assembly sequence planning.

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