Research on drive axle assembly sequence planning based on semantic process knowledge

doi:10.11996/JG.j.2095-302X.2024030564

Abstract

Abstract:

In response to the lack of knowledge-based reasoning and decision-making in the assembly sequence planning of construction machinery drive axles, which makes it difficult to realize intelligent assembly of complex products, a method for assembly sequence planning based on semantic process knowledge was proposed. The semantic process knowledge information model of the drive axle assembly was constructed to express the hierarchical structure information, attribute information, and assembly semantic information of sub-assemblies. By establishing an assembly sequence planning ontology and introducing semantics web rule language (SWRL) rules into the assembly ontology, the semantic representation and reasoning and decision-making of process knowledge were studied. The process knowledge graph of the drive axle was constructed using Neo4j, and the assembly sequence of typical structural sub-assemblies was quickly identified. By quantifying the influence of geometric properties, physical properties, and assembly process information of parts on assembly efficiency, the assembly weight sequence was generated, and the assembly sequence of atypical structure sub-assemblies was iteratively modified by SWRL rules. Finally, the feasibility of the proposed method was verified by generating and simulating the assembly sequence of the drive axle of a certain model of road roller, providing a reference for knowledge-driven complex product assembly sequence planning.

Key words: assembly sequence planning, drive axle, ontology modeling, rule-based reasoning, knowledge graph

CLC Number:

TP391

WANG Gangfeng, ZHANG Huan, LIU Simeng, YUE Ping, ZHANG Dong. Research on drive axle assembly sequence planning based on semantic process knowledge[J]. Journal of Graphics, 2024, 45(3): 564-574.

Figures/Tables 15

References 20

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序号	SWRL规则	描述
Rule-1	Has_Assembly_Constraint (?x, ar_1:partially_constraint) ->Has_Assembly_Relationship(?x, ar:assembly_relationship)	对于某个零件是否含有装配约束中的部分约束ar_1: partially_constraint，如果有该部分约束，即推理该零件具有装配约束关系
Rule-2	Has_Mating_Constraint(?x, ar_2:concentric) ^ Has_Same_Feature_Position(?x, ?y) ^ Has_Mating_Constraint(?y, ar_2:concentric) ->Has_Sequential_Order(?y, neighbourship)	2个零件在具有相同几何面特征关系时，还包含同心装配约束ar_2: concentric特征时，即具有毗邻关系
Rule-3	Has_Mating_Constraint(?x, ar_2:alignment) ^ Has_Same_Feature_Position(?x, ?y) ^ Has_Mating_Constraint(?y, ar_2:alignment) ->Has_Sequential_Order(?y, neighbourship)	2个零件在具有相同几何面特征关系时，还包含接触对齐ar_2: alignment特征时，即具有毗邻关系
Rule-4	Has_Mating_Constraint(?x, ar_2:angel) ^ Has_Same_Feature_Position(?x, ?y) ^ Has_Mating_Constraint(?y, ar_2:angel) ->Has_Sequential_Order(?y, neighbourship)	2个零件在具有相同几何面特征关系时，还包含角度ar_2: angel特征时，即具有毗邻关系
Rule-5	Has_Mating_Constraint(?x, ar_2:fixed) ^ Has_Same_Feature_Position(?x, ?y) ^ Has_Mating_Constraint(?y, ar_2:fixed) ->Has_Sequential_Order(?y, neighbourship)	2个零件在具有相同几何面特征关系时，还包含固定约束ar_2: fixed特征时，即具有毗邻关系
Rule-6	Has_Mating_Constraint(?x, ar_2:lock) ^ Has_Same_Feature_Position(?x, ?y) ^ Has_Mating_Constraint(?y, ar_2:lock) ->Has_Sequential_Order(?y, neighbourship)	2个零件在具有相同几何面特征关系时，还包含锁定约束ar_2: lock特征时，即具有毗邻关系
Rule-7	Has_Mating_Constraint(?x, ar_2:vertical) ^ Has_Same_Feature_Position(?x, ?y) ^ Has_Mating_Constraint(?y, ar_2:vertical) ->Has_Sequential_Order(?y, neighbourship)	2个零件在具有相同几何面特征关系时，还包含垂直约束ar_2: vertical特征时，即具有毗邻关系
Rule-8	Has_Part_Type(?x, pt:shaft) ^ Has_Mating_Constraint(?x, ar_2:alignment) ->Has_Sequential_Order(?x, prior_assembly)	某个零件属于轴系零件时，且有接触对齐约束ar_2: alignment特征时，则该零件优先装配
Rule-9	Has_Assembly_Relationship(?x, ag:assembly_group) ->Has_Sequential_Order(?x, prior_assembly)	某个零件有非本装配体的装配关系ag: assembly_group，则该零件有优先装配关系

序号	SWRL规则	描述
Rule-1	Has_Assembly_Constraint (?x, ar_1:partially_constraint) ->Has_Assembly_Relationship(?x, ar:assembly_relationship)	对于某个零件是否含有装配约束中的部分约束ar_1: partially_constraint，如果有该部分约束，即推理该零件具有装配约束关系
Rule-2	Has_Mating_Constraint(?x, ar_2:concentric) ^ Has_Same_Feature_Position(?x, ?y) ^ Has_Mating_Constraint(?y, ar_2:concentric) ->Has_Sequential_Order(?y, neighbourship)	2个零件在具有相同几何面特征关系时，还包含同心装配约束ar_2: concentric特征时，即具有毗邻关系
Rule-3	Has_Mating_Constraint(?x, ar_2:alignment) ^ Has_Same_Feature_Position(?x, ?y) ^ Has_Mating_Constraint(?y, ar_2:alignment) ->Has_Sequential_Order(?y, neighbourship)	2个零件在具有相同几何面特征关系时，还包含接触对齐ar_2: alignment特征时，即具有毗邻关系
Rule-4	Has_Mating_Constraint(?x, ar_2:angel) ^ Has_Same_Feature_Position(?x, ?y) ^ Has_Mating_Constraint(?y, ar_2:angel) ->Has_Sequential_Order(?y, neighbourship)	2个零件在具有相同几何面特征关系时，还包含角度ar_2: angel特征时，即具有毗邻关系
Rule-5	Has_Mating_Constraint(?x, ar_2:fixed) ^ Has_Same_Feature_Position(?x, ?y) ^ Has_Mating_Constraint(?y, ar_2:fixed) ->Has_Sequential_Order(?y, neighbourship)	2个零件在具有相同几何面特征关系时，还包含固定约束ar_2: fixed特征时，即具有毗邻关系
Rule-6	Has_Mating_Constraint(?x, ar_2:lock) ^ Has_Same_Feature_Position(?x, ?y) ^ Has_Mating_Constraint(?y, ar_2:lock) ->Has_Sequential_Order(?y, neighbourship)	2个零件在具有相同几何面特征关系时，还包含锁定约束ar_2: lock特征时，即具有毗邻关系
Rule-7	Has_Mating_Constraint(?x, ar_2:vertical) ^ Has_Same_Feature_Position(?x, ?y) ^ Has_Mating_Constraint(?y, ar_2:vertical) ->Has_Sequential_Order(?y, neighbourship)	2个零件在具有相同几何面特征关系时，还包含垂直约束ar_2: vertical特征时，即具有毗邻关系
Rule-8	Has_Part_Type(?x, pt:shaft) ^ Has_Mating_Constraint(?x, ar_2:alignment) ->Has_Sequential_Order(?x, prior_assembly)	某个零件属于轴系零件时，且有接触对齐约束ar_2: alignment特征时，则该零件优先装配
Rule-9	Has_Assembly_Relationship(?x, ag:assembly_group) ->Has_Sequential_Order(?x, prior_assembly)	某个零件有非本装配体的装配关系ag: assembly_group，则该零件有优先装配关系

名称	数值	特征值f(x_m)	名称	装配工艺信息	特征值f(x_n)
质量(M)/kg	0~0.2	1-5M	约束形式	共轴/距离/插入	0.6
	0.2~5.0	0		共向	0.45
	5.0~10.0	0.2M-1		螺栓连接	0.5
	>10.0	1		铆接/焊接	1
尺寸(S)/mm	0~50	1-0.02S	配合形式	间隙配合	0
	50~500	0		过渡配合	0.05T (力矩/kN·m)
	>500	1.25-0.0005S		过盈配合	1
数量(Q)/个	1~2	0	装配操作方式	零件被平放在某零件上	0.2
	3~4	0.2Q		零件被装填在某零件上	0.4
	3~4	0.2Q		零件被配对在某零件上	0.6
	>5	1		零件被插入在某零件上	0.8
	>5	1		零件被扭在某零件上	1

名称	数值	特征值f(x_m)	名称	装配工艺信息	特征值f(x_n)
质量(M)/kg	0~0.2	1-5M	约束形式	共轴/距离/插入	0.6
	0.2~5.0	0		共向	0.45
	5.0~10.0	0.2M-1		螺栓连接	0.5
	>10.0	1		铆接/焊接	1
尺寸(S)/mm	0~50	1-0.02S	配合形式	间隙配合	0
	50~500	0		过渡配合	0.05T (力矩/kN·m)
	>500	1.25-0.0005S		过盈配合	1
数量(Q)/个	1~2	0	装配操作方式	零件被平放在某零件上	0.2
	3~4	0.2Q		零件被装填在某零件上	0.4
	3~4	0.2Q		零件被配对在某零件上	0.6
	>5	1		零件被插入在某零件上	0.8
	>5	1		零件被扭在某零件上	1