Abstract: An in-process kerf measuring device and method of using thereof, for measuring a kerf made from a cutting device. The device includes a taper gauge having a top and bottom, the taper gauge being a predetermined shape and size and capable of probing the kerf. The device also includes a spring coiled around the taper gauge, a shaft having a top and a bottom, the top of the shaft is in mating relation to the bottom of the taper gauge, a horizontal connecting plate having a resting position, the bottom of the shaft is rotatably attached to the horizontal connecting plate. The device also includes a stroke means, where the stroke means is in connected relation to the horizontal connecting plate, a measurement means for measuring the kerf and a means for actuation of the device.

Abstract: A laser-machining apparatus that utilizes "flying optics" having at least one lens that corrects the divergence of the laser beam as it is emitted from the laser. Without correction, "flying optics" type of systems cannot be used with materials requiring a kerf that must be kept within tolerances not exceeding a couple of thousandths of an inch. The preferred embodiment utilizes a vertical lens that focuses the beam on the surface of the work piece. An additional adjustment of the vertical position of that lens is provided that corresponds to the distance that the carriage is from the laser and degree of divergence experienced with the laser that is being used. An alternative embodiment places at least one beam adjustment lens between the laser and the redirecting mirror that redirects the beam from the laser onto the surface of the work piece. In this embodiment, adjustment of the vertical lens to compensate for the laser beam divergence is unnecessary.