由实例3图可知，h1尺寸的最大变动量为△D2，则有
△Dh1=△D2=H2max-H2min=C1C2 =O1C2-O1C1= O1O2+O2C2-O1C1=
Td2sin?2?d?Td/22?d?Td/22
????Td1?? =
??2??1??sin2??（b）h2工序尺寸
△Dh3=0 （c）h3工序尺寸
△Dh3=
d?Td/22?d?Td/22=Td/2
（d）h4工序尺寸
由实例3图可知，h4尺寸的最大变动量为△D3，则有
△Dh4=△D3=H3max-H3min=E1E2 =O2E1-O2E2= O1O2+O1E1-O2E2=
Td2sin?2?d?Td/22?d?Td/22
??Td1?1?=
?2?sin?2???????
（e）h5工序尺寸
△Dh5=0
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