Patent ID: 8576411

Claim:
A component position measurement method, comprising: gripping a component using a chuck; registering a gripping position of the component that is gripped by the chuck as a measurement reference position; shifting the component that is gripped by the chuck with an inclination so as to block a light beam in a direction intersecting the component at a blocking position by the component; measuring a positional deviation of the component in a direction that is inclined with respect to the measurement reference position at the blocking position by a measurement unit; obtaining a deviation amount by comparing the measurement value with the registered measurement reference position; obtaining a measurement correction value of a leading end position of the component based on a similarity relationship between a virtual triangle obtained by setting the deviation amount as one side and the measurement reference position as one point and a virtual triangle passing through the blocking position, a leading end of the component, and a position dropping from the component leading end to a horizontal line passing through the blocking position; and obtaining a component leading end position deviation amount by summing the deviation amount and the measurement correction value.