초록 ▼

The apparatus includes a driver (86). The driver (86) includes a front portion (90) which is adapted to receive a riveting die (92), and a rear portion (88) which is a copper plate. The copper plate (88) is receptive to the establishment of magnetic field currents therein. The actuator further inclu

The apparatus includes a driver (86). The driver (86) includes a front portion (90) which is adapted to receive a riveting die (92), and a rear portion (88) which is a copper plate. The copper plate (88) is receptive to the establishment of magnetic field currents therein. The actuator further includes a coil (72) which is positionable in close proximity to the copper plate (88) of the driver (86). The apparatus further includes a bank of capacitors having a stored charge so as to produce a current pulse through the coil (72) when the capacitors are connected to the coil (72). Still further, the apparatus includes a control means for selectively connecting the stored charge from the capacitors to the coil. The copper plate (88) is relatively thick compared to that used in high voltage electromagnetic actuators, such that the present apparatus requires only a relatively low voltage in order to produce the required high forces to accomplish the desired riveting.

대표청구항 ▼

An electromagnetic pulse actuator, comprising: an electromagnetic actuator means, including (a) a driver having a first portion which is receptive to the establishment of magnetic field eddy currents therein and a second portion which includes a first work assembly means to accomplish riveting or ot

An electromagnetic pulse actuator, comprising: an electromagnetic actuator means, including (a) a driver having a first portion which is receptive to the establishment of magnetic field eddy currents therein and a second portion which includes a first work assembly means to accomplish riveting or other high-force impact work and (b) a coil which is positionable in close proximity to said first portion of said driver, wherein the actuator means has a configuration defining an axially open center area; a source of stored charge defining a selected voltage, adapted to produce a current pulse through the actuator coil when connected thereto; control means for selectively connecting the stored charge to the coil, thereby producing a current pulse in the coil which in turn produces a magnetic force pulse large enough to propel the driver forward with sufficient momentum to accomplish the desired high force impact work; and a second work assembly means positioned in the open center area of said actuator means for accomplishing additional work other than high force impact work, such as drilling.