Patent ID: 7281323

Claim:
A method of mounting components using a component mounting apparatus comprising at least one head assembly comprising a plurality of nozzle spindles, the method comprising: correcting the positions of the nozzle spindles by rotating a rotation housing; lowering at least one of the plurality of nozzle spindles; picking up a component with the lowered nozzle spindle; determining a mounting position inclination angle; correcting the position of the picked-up component based upon the determined mounting position inclination angle by rotating the rotation housing and also independently rotating the nozzle spindles, wherein rotating the nozzle spindle comprises: using a nozzle rotation unit to rotate a nozzle driving gear that is coupled to the nozzle rotation unit; arranging a plurality of nozzle driven gears around a circumference of the nozzle spindles; coupling the nozzle driven gears to the nozzle spindles, wherein the nozzle driven gears are in mechanical communication with the nozzle driving gear; moving the picked-up component over a printed circuit board; and mounting the picked-up component to a specified mounting position on the printed circuit board.