Patent ID: 11917765
Assignee: FUJI CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 11:
12. A mounting method comprising:
mounting one component on a board by controlling a board conveyance device configured to convey a board, a feeder configured to store the components to be mounted on the board, and a component transfer device including a suction nozzle configured to pick up a component from the feeder and mount the component on the board;
estimating a cause of a mounting error comprising:
an error history storage step of processing and storing an error occurrence status of a mounting error that mounting work of mounting a component on a board has failed in a component mounter by attributing the error occurrence status into either individuals of one or more types of devices used for the mounting work or individuals of one or more types of data used for the mounting work, or both;
a factor setting step of selecting two types of factors from at least one of the devices and the data and respectively setting the selected factors as a first factor and a second factor;
a first determination step of, for each individual of a determination target, performing a process of specifying the individual as the first factor, obtaining the error occurrence status for each individual as the second factor under a condition that the individual as the first factor is specified and determining whether the obtained error occurrence status is biased according to a difference in the second factor;
a second determination step of, for each individual of the determination target, performing a process of specifying the individual as the second factor, obtaining the error occurrence status for each individual as the first factor under a condition that the individual as the second factor is specified, and determining whether the obtained error occurrence status is biased according to a difference in the first factor; and
a cause estimation step of identifying a causative individual causing the mounting error based on a first determination result in the first determination step and a second determination result in the second determination step;

correcting the causative individual;
mounting another component after correcting the causative individual.