Electric tool
AssigneeMaxell Izumi Co., Ltd.
InventorMasaki MIYAZAWA
Life of this patent
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Abstract
An electric tool comprises a main body having an electric motor, a feed screw, a slide part, a current sensor, a lower limit switch, and a control part, and a tool head. The slide part is moved backward to a position where a work can be machined, and then the slide part is moved forward to a position where the machined work can be removed. The control part performs a subsequent continuous process when a detection value of the current sensor exceeds a first current value and does not exceed a second current value at a point in time when the lower limit switch is activated, and performs an abnormality process when the second current value is exceeded at the point in time when the lower limit switch is activated.
Claims7
An electric tool comprising:
- a main body including an electric motor, a feed screw to be actuated by the electric motor, a slide part to be moved by the feed screw, and a control part;
- and
- a tool head that is coupled to the main body and includes a first jaw and a second jaw pivotally coupled to each other,
- wherein the tool head is provided with a spring that urges a distal end side of the first jaw and a distal end side of the second jaw in directions toward each other, processes a work with a first shape part of the distal end side of the first jaw and a second shape part of the distal end side of the second jaw, and includes a current sensor that detects a current of the electric motor and a lower limit switch that is activated by movement of the slide part to a lower limit position, and
- the control part determines that processing of the work is normal and performs a subsequent continuous process when a detection value of the current sensor exceeds a first current value and does not exceed a second current value at a point in time when the lower limit switch is activated, and determines that there is an abnormality and performs an abnormality process when the second current value is exceeded at the point in time when the lower limit switch is activated.
Dependencies are inferred from the claim text.