Fig 6.16 static stiffness graph of the lathe carriage movie（3）stiffness of the process system
Ysystem?Ymachine?Yfixture?Ycutter?Yworkpiecewhere
YmachineYcutter—deformation of the machine tool mm；
Yfixture—fixture deformationmm；
—cutter deformation mm；
Yworkpiece—workpiece deformationmm。
The individual stiffness
Ysystem?FYKsystem，Ymachine?FYKmachine，Yfixture?FYKfixture，YcutterFYFY?，Yworkpiece?KcutterKworkpiece1Ksystemtherefore
?1Kmachine?1Kfixture?1Kcutter?1KworkpieceKsystem?11Kmachine?1Kfixture?1Kcutter?1Kworkpiece
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