A cover for a hammer tool and systems, assemblies, and methods thereof can be flexible and can comprise a body; a first attachment interface at a first end portion of the body; and a second attachment interface at a second end portion of the body separated from the first end portion of the body. A predefined hinge can be formed in the body of the cover, between the first attachment interface and the second attachment interface. The cover can be configured to be fixedly coupled to a housing of a hammer tool via the first attachment interface. The cover can be configured to be removably coupled to the housing of the hammer tool via the second attachment interface.

Apparatus that is particularly suited for machining hard dense ceramic materials comprises a vertical milling machine within an enclosure. The machine has a plurality of slides for moving a spindle holding an end mill in the x, y, and z directions. The x and y slides are located above the elevation of the work table and any workpiece held thereon. Air flows downwardly from the region of the x and y slides and through gaps associated with two fabric shields which have horizontal portions that translate respectively in the x axis and y axis directions. The shields inhibit coolant that contains work piece particulates from traveling upwardly toward the x and y slides. A tool changer system comprises a tool holding tray (30) mounted adjacent the work table within a housing having a movable cover. The housing enables the tool tray to be removed from the enclosure through an access door while the machine tool is operating and coolant is flowing.

A machine tool includes a frame with two opposite frame sections, a number of leg elements arranged on the frame, and a first carriage having a first linear axis. The first carriage is guided on the two opposite sections of the frame and is displaceable in a first direction. A second carriage of a second linear axis is guided on the first carriage and is displaceable in a second direction A tower element has a third linear axis, which is retained on the second carriage. A machining element is retained on the tower element and is displaceable in a third direction, and a tool spindle is arranged on the machining element for receiving a tool.

Example implementations relate to one or more than one sealing assembly to seal an aperture, coupling two chambers, the aperture being arranged to accommodate a printhead carriage; the assembly comprising: at least a pair of curtains capable of being disposed in a sealing relationship with the aperture; the at least a pair of curtains being capable of being positioned one either side of the printhead carriage, and spooling and unspooling mechanisms comprising a pair of spools onto which the pair of curtains can be spooled and unspooled in response to movement of the printhead carriage to maintain the sealing relationship with the aperture.

Device for machining a workpiece (10) comprising a housing (200), at least one machining head (210) carrying a machining tool (211), characterized in that it comprises an air system (300) for evacuating the chips produced during the machining of said workpiece (10) comprising: an air inlet (301) and an air outlet (302) and an air flow channel (303); a means (304) for causing an air flow to flow in said air flow channel (303); and an air passage through-hole (305) delimiting said air outlet, through which said machining tool (211) extends so that said air flow caused to flow in said air channel can be expelled from said housing through said through-hole in order to repel said chips produced by said machining tool out of said enclosure (201) of said housing.

An elongated T-slot protection device comprising an elongated member having a body, a pair of sidewalls, and a pair of legs. The protection device is placeable into an elongated opening of a T-slot, and covers the elongated opening to prevent debris from entering the T-slot formed in a work surface.

An elongated T-slot protection device comprising an elongated member having a body, a pair of sidewalls, and a pair of legs. The protection device is placeable into an elongated opening of a T-slot, and covers the elongated opening to prevent debris from entering the T-slot formed in a work surface.

An elongated T-slot protection device comprising an elongated member having a body, a pair of sidewalls, and a pair of legs. The protection device is placeable into an elongated opening of a T-slot, and covers the elongated opening to prevent debris from entering the T-slot formed in a work surface.

A processing machine for the production of a dental workpiece from a blank, includes a housing in which a first chamber and a second chamber are arranged, in which the second chamber is separate from the first chamber. A first holding device for holding a blank is provided, and the first holding device is arranged in the first chamber and is movable relative to the housing. A second holding device for holding a blank is provided, and the second holding device is arranged in the second chamber and is movable relative to the housing. A processing device is movable relative to the housing, and a blank held in the first holding device and a blank held in the second holding device can be processed by the processing device.

Example implementations relate to one or more than one sealing assembly to seal an aperture, coupling two chambers, the aperture being arranged to accommodate a printhead carriage; the assembly comprising: at least a pair of curtains capable of being disposed in a sealing relationship with the aperture; the at least a pair of curtains being capable of being positioned one either side of the printhead carriage, and spooling and unspooling mechanisms comprising a pair of spools onto which the pair of curtains can be spooled and unspooled in response to movement of the printhead carriage to maintain the sealing relationship with the aperture.