A material removal device for removing material from a substrate includes a holder extending between first and second sides and a grinding wheel supported by the holder and being operable to remove the material from the substrate. The holder has a guide frame at the first side and a support frame at the second side. The guide frame has a first bottom surface and the support frame has a second bottom surface. The first and second bottom surfaces are vertically offset from each other. The grinding wheel has an axle supported by the guide frame and the support frame. The grinding wheel has a grinding surface located below the first bottom surface and above the second bottom surface.

A machine for processing a screen printing frame includes an upstream end and an opposed downstream end, a grinding assembly located between the upstream and downstream locations, wherein the grinding assembly includes a first grinder configured to grind a first pattern into the screen printing frame and a second grinder configured to grind a second pattern into the screen printing frame different from the first grinding pattern.

A machine for processing a screen printing frame includes an upstream end and an opposed downstream end, a grinding assembly located between the upstream and downstream locations, wherein the grinding assembly includes a first grinder configured to grind a first pattern into the screen printing frame and a second grinder configured to grind a second pattern into the screen printing frame different from the first grinding pattern.

A second relative speed where a spindle and a center of a holding surface are brought together in a grinding step is established such that the spindle and the outer circumferential edge of a surrounding region of the holding surface start being brought together other along a first direction and the spindle's rotational shaft and the holding surface's center start being brought together along a second direction simultaneously and that the spindle and the outer circumferential edge of the surrounding region finish being brought together along the first direction and the spindle's rotational shaft and the holding surface's center finish being brought together along the second direction simultaneously. Specifically, the second relative speed is established in view of parameters that are established as desired and the worn-off amount of the grindstones that is grasped prior to or during the grinding step (i.e., a change in thickness of the grindstones).

A second relative speed where a spindle and a center of a holding surface are brought together in a grinding step is established such that the spindle and the outer circumferential edge of a surrounding region of the holding surface start being brought together other along a first direction and the spindle's rotational shaft and the holding surface's center start being brought together along a second direction simultaneously and that the spindle and the outer circumferential edge of the surrounding region finish being brought together along the first direction and the spindle's rotational shaft and the holding surface's center finish being brought together along the second direction simultaneously. Specifically, the second relative speed is established in view of parameters that are established as desired and the worn-off amount of the grindstones that is grasped prior to or during the grinding step (i.e., a change in thickness of the grindstones).

The invention relates to a finishing device for removing the weld bead generated during welding of a window or door frame or frame section at the mitered surfaces, wherein the finishing device comprises a support surface for the frame or frame section and a processing arm for supporting a tool holder, and the processing arm consists of a plurality of arm elements that move in hinged fashion relative to one another but can also be fixed in place, wherein the tool holder comprises at least two cutting tools driven by a rotational drive, said tools rotating about a tool axis and at least one tool laterally next to the blade of the tool, contact sides.

The invention relates to a finishing device for removing the weld bead generated during welding of a window or door frame or frame section at the mitered surfaces, wherein the finishing device comprises a support surface for the frame or frame section and a processing arm for supporting a tool holder, and the processing arm consists of a plurality of arm elements that move in hinged fashion relative to one another but can also be fixed in place, wherein the tool holder comprises at least two cutting tools driven by a rotational drive, said tools rotating about a tool axis and at least one tool laterally next to the blade of the tool, contact sides.

A machine for processing a screen printing frame includes an upstream end and an opposed downstream end, a grinding assembly located between the upstream and downstream locations, wherein the grinding assembly includes a first grinder configured to grind a first pattern into the screen printing frame and a second grinder configured to grind a second pattern into the screen printing frame different from the first grinding pattern.

A machine for processing a screen printing frame includes an upstream end and an opposed downstream end, a grinding assembly located between the upstream and downstream locations, wherein the grinding assembly includes a first grinder configured to grind a first pattern into the screen printing frame and a second grinder configured to grind a second pattern into the screen printing frame different from the first grinding pattern.

A system and method for imparting a textured surface effect in a board. The system and method are configured to releasably secure a charge on a table; determine a random abrasion pattern for the charge with at least one programmable controller; and control at least one abrasion assembly with the at least one programmable controller in accord with the random abrasion pattern to selectively engage and remove desired portions of the upper surface of the charge with the at least one abrasion assembly to form a randomized textured surface effect thereon.