An optical unit fora laser beam for laser machining of a workpiece is disclosed. With particular application to a laser beam, the optical unit may be applied to a high-power laser beam and comprise an optical element for the optical imaging of the laser beam, and two protective glasses that are transparent for the laser beam, the outer edges of which protective glasses being enclosed in an airtight manner by a holder in such a way that they form an interior space with the holder, the optical element also being arranged in the interior space. A laser machining device is also disclosed.

A laser cladding head comprises a protective housing, a focal array, a turning mirror, and a powder nozzle. The housing extends along a primary axis from a proximal end to a distal end. The focal array is situated at the proximal end and oriented to receive and focus collimated light in a beam directed substantially along the primary axis. The turning mirror is situated at the distal end and disposed to redirect the beam in an emission direction, towards a target point separated from the turning mirror by a working distance of at most a tenth the focal length. The turning mirror is a nonfocal reflective surface indexable to alter an impingement location of the beam on the turning mirror. The powder nozzle is situated at the distal end and receives and directs weld material towards the target point for melting.

In a sleeve for a gas nozzle, a sleeve main body and a sleeve end face is formed at least in part by a wear protection element which is fastened to the sleeve main body and which is composed of a more wear-resistant material than the sleeve main body adjoining the sleeve end face, an inner and/or an outer beveled portion of the sleeve end face are formed at least in part by the wear protection element.

The invention relates o a laser processing machine (11) with a laser processing head (12), with a support grate (16) that defines a support plane (A) for supporting a workpiece (8) to be processed, with a fluid supply device (21) and with a fluid removal device (31). The fluid supply device (21) and fluid removal device (31) are designed to generate a fluid flow (27) under the support plane (A) of the support grate (16). The fluid supply device (21) can be moved with the laser processing head (12).

This disclosure provides a shield for use in a liquid guided laser system and related method of use. The shield comprises a rigid body with a target facing surface. The rigid body defines a through hole with a diameter that accommodates a liquid guided laser path. The rigid body has a thickness that defines a length of the liquid guided laser path through the rigid body. The thickness of the rigid body is at least twice the diameter of the through hole. The rigid body is positioned in the liquid guided laser path of the liquid guided laser system between a discharge nozzle of the liquid guided laser system and a target.

An optical unit fora laser beam for laser machining of a workpiece is disclosed. With particular application to a laser beam, the optical unit may be applied to a high-power laser beam and comprise an optical element for the optical imaging of the laser beam, and two protective glasses that are transparent for the laser beam, the outer edges of which protective glasses being enclosed in an airtight manner by a holder in such a way that they form an interior space with the holder, the optical element also being arranged in the interior space. A laser machining device is also disclosed.

According to an embodiment of a laser cutting nozzle where a shroud can move along the central axis of the laser cutting nozzle in the axial direction. The shroud is designed to mate with interior walls along a nozzle cavity extending from a cavity base of the nozzle body. The exterior side walls of the shroud and interior side walls of a cavity of the nozzle body are multi-sided (e.g., in complementary polygonal shapes). Shroud rotation about the central axis of the laser cutting nozzle is limited or prevented by an interlocking arrangement between the exterior side walls of the shroud and the interior side walls of the nozzle body.

A nozzle cover for a laser drill includes a mount, a first shell member, and a second shell member. The mount has a first opening centered about a drill axis through which a nozzle can extend. The first shell member extends along the drill axis and has a first end attached to the mount at a first pivot and a second end with a first notch. The second shell member extends along the drill axis and has a first end attached to the mount at a second pivot and a second end with a second notch. The first shell member and the second shell member are configured to pivot between a closed position in which the first shell member and the second shell member form a hollow interior portion coaxial with the drill axis to enclose the nozzle and an open position in which the nozzle is exposed.

This disclosure describes laser machining head gas nozzles that have an exit opening for passage of a laser beam onto a workpiece; an annular gap surrounding the exit opening; and a sleeve disposed and guided displaceably within the annular gap for axial displacement between a rearward and a forward position. The sleeve projects beyond the exit opening at least in the forward position, and the sleeve is tiltably mounted in the annular gap.

This disclosure describes laser machining head gas nozzles that have an exit opening for passage of a laser beam onto a workpiece; an annular gap surrounding the exit opening; and a sleeve disposed and guided displaceably within the annular gap for axial displacement between a rearward and a forward position. The sleeve projects beyond the exit opening at least in the forward position, and the sleeve is tiltably mounted in the annular gap.