METHOD FOR JUDGING WHETHER OR NOT DYNAMIC UNBALANCE IS ELIMINATED

Japanese Patent JP3658616

B2

PROBLEM TO BE SOLVED: To adequately judge whether or not a rotary body such as a crankshaft should be corrected by a method wherein four simultaneous basic equations that have unknown values of correction quantities are obtained in order to offset dynamic unbalance of the rotary body obtained by measuring.
SOLUTION: On, for example, set five correction faces #1-#5, correction angle positions V1-V12 are limited in respective maximum correctable quantities. Initial dynamic unbalance vectors measured on the correction faces #1, #5 are U1, U5 and the balancing of them is executed such that each of them is respectively corrected in an adequate quantity on the positions V1-V12. All of the correction radiuses are the same. In order to offset dynamic unbalance obtained by measuring, four simultaneous basic equations that have unknown values of correction quantities on the positions V1-V12 are obtained. Next, the basic equations are expanded on the basis of the maximum correctable quantities with respect to the positions V1-V12. After that, it is judged that the correction of the unbalance is impossible only when the solutions do not exist in the equations.

Mitsuru Oda

JP26923195A

June 08, 2005

September 22, 1995

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Mitutoyo Corporation

G01M1/30; (IPC1-7): G01M1/30

JP53042793A
JP57182629A
JP61162732A
JP61161733U
JP61167540U
JP5281076A
JP1174929A
JP61206115U
JP61150700U
JP58148932U
JP56104230U
JP8145833A

Hiroshi Arafune
Yoshio Arafune

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