13 2007

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, . , (feature-based design). : (, , , ), ( , , ). ( , , ) ( ) ( , , ). (history-based design): . . () , , (, ). , . , . , . , . , , , ( ) . , , , ( ). , , , . , . ( , ), ( , , ). , , . , . , , , . , . ( ). ( ) , , . 1.



1.


, (, ). : ( ), ( ), . , - 1960- . , . . .. , , . LGS, .


, , , , . LGS, , , . , . .

, , , , , .. ( .. - ). / ( ). , , , , .. , , . .

- ( ), , . , .

LGS , .. / , ( ). : , .

, .. () , , LGS .

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, - . , , , . , . LGS , , .


, , . , , (BRep), , , , . , , . 1.



1.


, ( + ), . 2 (toolkits), , .



2. LGS


LGS, , , , . , Open CASCADE.


Sketcher , : ( ) (swept surface). , . , (), ( ), . . , ( ). , , , .

( ) ( ). , (, , ) ( , , ) . ( ), (. . 2). ( , , ). , ( ) , . , , .



2.


LGS 2D , , , , , . , , LGS (, , ). LGS 2D , , 90% LGS 2D. . LGS 2D : , , , . . , - , (offset) (connect), . ( ) Open CASCADE , , LGS 2D. ( ++) , , . ( LGS 2D, , , , - - ) LGS 2D Sketcher Toolkit, .


,

(wireframe), (surface) (solid). . , ( , , ), , .

, , , . , , , .

. (, , ) . (, adaptive swept surface ), (fill). , (offset), (variable offset), , ( ) (blended surface). . adaptive swept, (, ). , , .

, , ( ) (pad, shaft, rib, pocket, groove slot ). (fillet), (chamfer), (draft) . , (split), (thick), (close). , , (, , ). , 3D .

( , ), .. . , . , ( datum feature). , ( , ), .

LGS 3D Part Toolkit LGS 3D, : , , , , , .. LGS 3D , LGS 3D .


, , (assembly constraints). , ( ), . , , ( ). , .



3.


(update) .. (. . 3). .

, . , . , . .

, .

( .. ). .

0 6 ( , ). .

, . , ( ), . , , . .

, , , .. , . , : , , , , (Bill of Materials, BOM).

LGS 3D Assembly Toolkit , .


, . - , ( ) . , .. . , , . , . , (driving dimensions). (, , ) , , . , , .

LGS 2D Drafting Toolkit .


: , , , , . , . , . , . , .

LGS , -. , (, , ) , , , . - , .

, , , . - , , . , ( ), . , .

LGS 2D/3D Engineering Toolkit LGS 2D/3D, (, ). , (2D) BRep (3D) , , .


, , ( ) . , , . . . - . , , , .. . , , .



4. LGS


LGS , ( , , , , , . . 4). LGS 2D/3D Optimization Toolkit Engineering Toolkit .


CAD/CAM/CAE . (), (joints). , , . (, , , , , ) . , . - , . , , ( ). , .

(), . , . , , .

( , , , , , ) .

, , , , . , , , . ( LGS) . , , .

LGS 3D Kinematics Toolkit LGS 3D , , - .


CAE (, , ..) , . , - , , , .

( ) , , ( - ). LGS 3D , LGS 3D Dynamics Toolkit, , (BRep) .


. (.. ), . . , , , , .. ( ). ( , ). , (.. , ). , . , , , , , - . , , , .

LGS 3D Interoperability Toolkit LGS 3D, . (BRep) LGS 3D, , , . , .


, . , , : (, ), . , , , , , , . , . , , .

LGS 3D Configuration Toolkit , .


3D

( , , ) . , - . 3D (, , ), 3D , / . / .

LGS 3D Viewing Toolkit, .


, - , . , .

. LGS 2D FlashLGS, - (. . 5). (, , ) . , . , .



5. - (FlashLGS)


CAD 4D - , , .. . - . , . LGS 3D Scheduler, - .

, . , .

, , . . , ( ), , . . , .. ( ). LGS 3D , .


, 1995 , 1998 - , . 1993-1999 . , - . . CATIA V5, , . . .


"" , () 1999 . , , PLM ( ) ERP ( ). (CAD/CAM/CAE), , , . PLM ERP: , , , .

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