Mechanical Science and Technology for Aerospace Engineering March Vol No. 3 赵海新, 刘夫云, 杨运泽, 许坤参数的传递在装配件变型设计中非常重要, 而构造尺寸约束

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2013 3 32 3 Mechaical Sciece a Techology for Aerospace Egieerig March Vol. 32 2013 No.

1 Mechaical Sciece a Techology for Aerospace Egieerig March Vol No. 3 赵海新, 刘夫云, 杨运泽, 许坤参数的传递在装配件变型设计中非常重要, 而构造尺寸约束方程式是实现参数传递的有效方法通过分析装配约束的特点, 阐明了装配约束语义的表达和装配约束关系的定义构造了基于装配语义和约束关系的装配约束库在装配语义表达和装配约束关系定义的基础上, 对适合于装配约束库的相似性算法进行了研究, 提出了基于装配约束库的配合关系相似度算法, 并实现了一定程度上的尺寸约束自动生成通过具体事例对该算法进行了验证和实现装配约束库 ; 装配语义 ; 相似度 ; 算法 ; 尺寸约束 TG8 A Stuy o the Similarity of Costrait Relatios i Assembly Costraits Library Zhao HaixiLiu FuyuYag YuzeXu Ku School of Mechaical a Electrical EgieerigGuili Uiversity of a Electroic TechologyGuili AbstractParameter trasfer is very importat i assembly variat esiga builig equatio is a effective metho i realizig parameter trasfer. By aalyzig characteristics of assembly costraitsexpressio of assembly sematics a efiitio of assembly costrait relatio are illustrate. Assembly costraits library base o assembly sematics a costrait relatios is costructeof which structurefuctio a cotets are briefly escribe. Base o the expressio of assembly sematics a efiitio of assembly costrait relatio the similarity algorithm of costrait relatios is aalyze a stuie the formula of similarity suitable to assembly costraits library is euce. A automatic geeratio of imesio costrait is realize i a certai egree. The metho is verifie a realize by a cocrete example. Key worsassembly costraits libraryassembly sematicssimilarityalgorithmsimesio costrait M CAD /CAM zhx @ 163. com liufuyu310@ yahoo. com. c

2 p 0 - p' p 1 - p' = 0

3 l 0 l' 0 + l 1 l' 1 ± = 0 l 0 p 0 + l 1 p 1 + l 2 = 0 c 0 p p 2 1+ c 1 p 0 + c 2 p 1 + c 3 = 0 2c 0 p 0 + c 1 = 0 2c 0 p 1 + c 2 = 0 c 0 - k /2 = 0 l 1 l 2 = 0 l 2 0 = 0 l Q = β k + l - i qu i 1 C + + SQL Q = 1 k = l = qu i 1 0 < Q < 10 < < mik lqu i 1 qu i 0 Q = 0 = 0 qu i 0 qu i = m k + l - m m j r ij 2 0 qu i 1 0 j 1 m qu i = 1 k = l = m r i 0 < qu i < 10 < m mik l0 < r ij < 1 qu i = 0 m = 0 r i Q k A l B m i qu i j r ij β i 1 l 0 l' 1 - l 1 l' 0 = 0 r 1j l 0 l' 0 + l 1 l' 1 = 0 r 2j i u i l 0 l' 0 + l 1 l' 1 ± cosθ = k l qu 1 = r 1j l 0 l' 1 l 2 - l' 2 l 1 + l 1 l' 2 l 0 - l' 0 l 2 + l 2 l' 0 l 1 - l' 1 l 0 = 0 m qu 2 = k + l - m 0 r 1j 1 l 0 c 1 + l 1 c 2-2l 2 c 0 ± 1 = 0 c' 0 c 1 - c 0 c' c' 0 c 2 - c 0 c' c 0 ± c' 0 2 = 0 i qu i c' 0 c 1 - c 0 c' c' 0 c 2 - c 0 c' c c' 0 = j k + l - i qu i = 1 qu qu 2 m 1

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434 32 3 / m = 2 / 1 q 1 qu 2 = 2 /3 u 1 = 1 1 qu 2 = 1 k + l - i qu i = k + l - i qu i 1 qu 1 + 2 qu 2 = 1 2 1 + 1 2 2 3 = 5 6 = 1 qu 1 + 2 qu 2 = 1 2 1 + 1 2 1 = 1 1 1 gear1. z + gear2. z* gear1.

5 / m = 2 / 1 q 1 qu 2 = 2 /3 u 1 = 1 1 qu 2 = 1 k + l - i qu i = k + l - i qu i 1 qu qu 2 = = 5 6 = 1 qu qu 2 = = gear1. z + gear2. z* gear1. m /2 Dim ia part1. hole = Dim ia part2. hole 2 Legth bolt > Distace part1. bottomface part2. bottomface+ Heightut 4 1 / M. 8. M / 5 /6 qu 1 = 1 k = 2 l = 3 Distacegear1. ceterlie gear2. ceterlie= 2 i 1 2 i = gear2. z /gear1. z J ~ J ~ J ~ J ~ J ~ M J ~ J ~ J ~ 514

清算, 原告為使前開以應收帳款 ( 債權 ) 投資之事實, 於外在形式上更符合稅法之要求, 遂於 96 年度將該等應收帳款作價轉增資, 以滿足形式上之投資程序, 並得以認列投資損

清算, 原告為使前開以應收帳款 ( 債權 ) 投資之事實, 於外在形式上更符合稅法之要求, 遂於 96 年度將該等應收帳款作價轉增資, 以滿足形式上之投資程序, 並得以認列投資損談營利事業費用與損失之審定與轉正之時點 - 台中高等行 104 年訴 108 號簡評國富浩華聯合會計師事務所楊淑卿會計師壹問題之提出我國稽徵實務及審判實務上, 有謂營利事業既申報為損失科目, 稽徵機關認不合該科目要件, 不予認

Mechanical Science and Technology for Aerospace Engineering March Vol No. 3 赵海新, 刘夫云, 杨运泽, 许 坤 参数的传递在装配件变型设计中非常重要, 而构造尺寸约束

Mechanical Science and Technology for Aerospace Engineering March Vol No. 3 赵海新, 刘夫云, 杨运泽, 许坤参数的传递在装配件变型设计中非常重要, 而构造尺寸约束