Invention Grant
US08353435B2 Multistage solenoid fastening tool with decreased energy consumption and increased driving force 有权
多级螺线管紧固工具具有降低的能量消耗和增加的驱动力

Multistage solenoid fastening tool with decreased energy consumption and increased driving force
Abstract:
A fastening device that drives one or more fasteners into a workpiece generally includes a tool housing and a multistage solenoid contained in the tool housing. The multistage solenoid includes an armature member that travels through at least a first stage, a second stage, and a sense coil disposed therebetween. A driver blade assembly includes a blade member connected to the armature member. The driver blade assembly is operable between an extended condition and a retracted condition. A control module determines a position of the armature member relative to at least one of the first stage and the second stage based on a signal from the sense coil. The control module adjusts a force imparted on the armature by at least one of the first stage, the second stage, and a combination thereof based on the signal from the sense coil.
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