A screw guide mechanism of a screw driving and turning machine

摘要

This invention relates to a screw guide mechanism of a screw driving and turning machine, said screw driving and turning machine having a screw driving mechanism in which a driving piston having a driving and turning bit is slidably accommodated in a driving cylinder provided in a body, wherein compressed air is fed into the driving cylinder to drive the driving piston so that a screw to be driven held in a nose portion provided at an end of the body can be driven, and the screw driving and turning machine also having a screw turning mechanism to turn the screw, which has been driven by the driving piston, by an air motor, said screw guide mechanism comprising: a contact arm slidably arranged along the nose portion, said contact arm being pushed to the body side when an end of the contact arm is pressed against a material into which the screw is driven; a guide chuck to guide the screw to be driven accommodated in the nose portion, in the extending direction of the bit; and a contact portion coming into contact with the material into which the screw is driven, at a position on the end side more distant than said guide chuck. <IMAGE>