Supporting machining workpieces

A workpiece support of a machine tool for machining workpieces, the workpiece support comprising:

• a workpiece support device having a workpiece side for supporting a workpiece during machining of the workpiece and a lower side remote from the workpiece side, wherein, from the workpiece side towards the lower side, the workpiece support device is permeable to a waste air flow loaded with machining-related emissions;
• and
• a suction device comprising a vacuum generator and a suction line, wherein the vacuum generator is configured to:
• generate the waste air flow directed from the workpiece side towards the lower side of the workpiece support device,
• suck off the waste air flow into the suction line in a flow direction, and
• subsequently discharge the waste air flow via the suction line,
• wherein the suction line has a suction opening on a support device side arranged downstream of the workpiece side of the workpiece support device, and a flow cross section of the suction opening has an opening width,
• wherein the suction line is configured such that the waste air flow in the flow direction is capable of passing through the flow cross section of the suction opening of the suction line, and wherein at least one of the opening width of the flow cross section or a position of the suction opening on the suction line is variably adjustable,
• wherein the suction opening of the suction line is formed by two through openings each having a flow cross section,
• wherein a first through opening of the two through openings is provided on a line wall of the suction line and a second through opening of the two through openings is provided on an adjustment element adjacent to the line wall of the suction line in the flow direction of the waste air flow,
• wherein the two through openings provided on the line wall of the suction line and on the adjustment element overlap one another transversely to the flow direction of the waste air flow, such that
• the flow cross section of the suction opening of the suction line is formed as a resulting flow cross section of the suction opening of the suction line from the flow cross sections of the two through openings and such that the waste air flow is capable of passing through the resulting flow cross section of the suction opening of the suction line in the flow direction,
• and
• wherein the opening width of the resulting flow cross section of the suction opening of the suction line is variably adjustable, because the line wall of the suction line and the adjustment element are able to be advanced relative to one another in an advancing direction extending transversely to the flow direction of the waste air flow to thereby cause a variable mutual overlap of the two through openings transversely to the flow direction.

A machine tool for machining workpieces, comprising:

• a machining device;
• and
• a workpiece support configured to support a workpiece during machining by the machining device,
• wherein the workpiece support comprises:
• a workpiece support device having a workpiece side for supporting the workpiece during the machining of the workpiece and a lower side remote from the workpiece side, wherein, from the workpiece side towards the lower side, the workpiece support device is permeable to a waste air flow loaded with machining-related emissions;
• and
• a suction device comprising a vacuum generator and a suction line, wherein the vacuum generator is configured to:
• generate the waste air flow directed from the workpiece side towards the lower side of the workpiece support device,
• suck off the waste air flow into the suction line in a flow direction, and
• subsequently discharge the waste air flow via the suction line,
• wherein the suction line has a suction opening on a support device side arranged downstream of the workpiece side of the workpiece support device, and a flow cross section of the suction opening has an opening width,
• wherein the suction line is configured such that the waste air flow in the flow direction is capable of passing through the flow cross section of the suction opening of the suction line, and wherein at least one of the opening width of the flow cross section or a position of the suction opening on the suction line is variably adjustable,
• wherein the suction line has a multipart line wall comprising a plurality of wall parts, and wherein one of the plurality of wall parts is configured to be a releasable wall element and is releasably connected to a wall part of the multipart line wall that is permanently attached to the workpiece support,
• wherein a plurality of releasable wall elements are available for selection, and each of the available releasable wall elements has a suction opening having a flow cross section with an opening width,
• wherein the available releasable wall elements are configured such that at least one of:
• the opening widths of the flow cross sections of the suction openings on the available releasable wall elements are differently dimensioned, or
• when each of the available releasable wall elements is selectively releasably connected to the wall part of the multipart line wall permanently attached to the workpiece support, the suction opening of the selected available releasable wall element is positioned differently on the multipart line wall, and
• wherein the at least one of the opening width of the flow cross section of the suction opening of the suction line or the position of the suction opening on the suction line is variably adjustable because one of the available releasable wall elements is selectively releasably connectable to the wall part of the multipart line wall of the suction line permanently attached to the workpiece support.

A machine tool for machining workpieces, comprising:

• a machining device;
• and
• a workpiece support configured to support a workpiece during machining by the machining device,
• wherein the workpiece support comprises:
• a workpiece support device having a workpiece side for supporting the workpiece during the machining of the workpiece and a lower side remote from the workpiece side, wherein, from the workpiece side towards the lower side, the workpiece support device is permeable to a waste air flow loaded with machining-related emissions;
• and
• a suction device comprising a vacuum generator and a suction line, wherein the vacuum generator is configured to:
• generate the waste air flow directed from the workpiece side towards the lower side of the workpiece support device,
• suck off the waste air flow into the suction line in a flow direction, and
• subsequently discharge the waste air flow via the suction line,
• wherein the suction line has a suction opening on a support device side arranged downstream of the workpiece side of the workpiece support device, and a flow cross section of the suction opening has an opening width,
• wherein the suction line is configured such that the waste air flow in the flow direction is capable of passing through the flow cross section of the suction opening of the suction line, and wherein at least one of the opening width of the flow cross section or a position of the suction opening on the suction line is variably adjustable,
• wherein the suction opening of the suction line is formed by two through openings each having a flow cross section,
• wherein a first through opening of the two through openings is provided on a line wall of the suction line and a second through opening of the two through openings is provided on an adjustment element adjacent to the line wall of the suction line in the flow direction of the waste air flow,
• wherein the two through openings provided on the line wall of the suction line and on the adjustment element overlap one another transversely to the flow direction of the waste air flow, such that the flow cross section of the suction opening of the suction line is formed as a resulting flow cross section of the suction opening of the suction line from the flow cross sections of the two through openings and such that the waste air flow is capable of passing through the resulting flow cross section of the suction openings of the suction line in the flow direction, and
• wherein the opening width of the resulting flow cross section of the suction opening of the suction line is variably adjustable, because the line wall of the suction line and the adjustment element are able to be advanced relative to one another in an advancing direction extending transversely to the flow direction of the waste air flow to thereby cause a variable mutual overlap of the two through openings transversely to the flow direction.