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    • 32. 发明申请
    • Automated screw device
    • 自动螺丝装置
    • WO9810900A3
    • 1998-07-23
    • PCT/CA9700649
    • 1997-09-05
    • BECKER BURKHARD
    • BEKCER BURKHARD
    • B25B23/00B25B23/04B25B23/14B25B23/147B23P19/00
    • B25B23/14B25B23/0064B25B23/045B25B23/147
    • A fully automated handheld screw driving device (D) comprises an automatic feeding mechanism of screws (15) to the screwdriver bit (7) from an integral storage magazine (26), an automatic speed control mechanism for controlling the rotary speed of the screwdriver, an automatic force control mechanism for controlling the seating force of the screwdriver bit on the screw, an adjustable depth control mechanism for controlling the final screw depth in the work surface, and an adjustable seating torque control mechanism for controlling the final screw head seating torque. The screws (15) are spirally wound on a replaceable bobbin (48) removably mounted in the magazine (26). The device (D) can accommodate a full range of practical screw sizes and can be fitted with exchangeable bits (7) for use with screws having standard recessed star or square heads and various bolt heads. A central microprocessor (28) is used to control all operating functions of the screw driving device (D). Control of seating torque is achieved by directly measuring armature voltage, field current and armature current. The machine dynamic behavior is used to determine a proportionality coefficient between torque and the product of field and armature currents. The proportionality coefficient is recalculated for every operating cycle of the device to continuously compensate for the effect of temperature on the magnetic characteristics of the motor. Rotary speed and torque of the two motors used in the device are tightly controlled using feedback techniques.
    • 一种全自动手持式螺丝驱动装置,包括从一体式储物仓到螺丝起子的螺钉的自动进给机构,用于控制螺丝起子转速的自动调速机构,用于控制螺丝刀的就座力的自动力控制机构 螺丝刀上的螺丝刀头,用于控制工作表面中的最终螺丝深度的可调深度控制机构,以及用于控制最终螺钉头座椅扭矩的可调节的座椅扭矩控制机构。 螺钉螺旋缠绕在可拆卸地安装在盒中的可更换筒管上。 该设备可以适应各种实用的螺钉尺寸,并可以安装可更换的钻头,用于具有标准凹形星形或方形头和各种螺栓头的螺钉。 中央微处理器用于控制螺丝驱动装置的所有操作功能。