| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technique of a screw fastening machine including a screw supply mechanism for supplying a screw onto a shaft of a driver bit. <P>SOLUTION: The screw fastening machine includes: the vertically-movable driver bit; a screw chute which has the sliding surface of a first tilt angle and is used for sliding the screw; a screw supporting surface which has a second tilt angle and is used for supporting the screw; and a chuck which has a spindle in the upper position of the screw supporting surface and can be rotated around the spindle. The chuck is configured in such a manner that it has a first state in which the center of the screw supporting surface is on the shaft of the driver bit and the end face of the screw supporting surface comes close to the sliding surface at the lower end of the screw chute, a second state in which the screw supporting surface becomes horizontal and a third state in which the screw supporting surface is retreated from the position on the shaft. <P>COPYRIGHT: (C)2012,JPO&INPIT |
