Cutting devices
AssigneeMakita Corporation
InventorsToshiyuki KANI, Goh YAMAMURA
Life of this patent
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Abstract
A cutting device includes a cutting unit having a rotary blade, a table for placing a workpiece thereon, and a support device vertically movably supporting the cutting unit relative to the table. The cutting unit includes a blade case. The blade case covers an upper portion of the rotary blade and has a dust discharge member for discharging dust produced at a cutting region. The cutting device further includes a dust guide device disposed on at least one of an upstream side and a downstream side of the dust discharge member with respect to a flow of the dust. A position of at least a part of the dust guide device changes relative to the dust discharge member according to change of the vertical position of the cutting unit.
Claims20
A cutting device comprising:
- a cutting unit having a rotary blade;
- a table for placing a workpiece thereon;
- a support device vertically movably supporting the cutting unit relative to the table, the cutting unit including:
- a blade ease covering an upper portion of the rotary blade and having a dust discharge member;
- and
- a movable cover covering a lower portion of the rotary blade and opened and closed in response to the vertical movement of the cutting unit,
- a dust guide device including a dust guide member covering an edge portion of the rotary blade exposed as the movable cover is opened, the dust guide member serving to guide dust produced at a cutting region toward the dust discharge member of the blade case;
- and
- a dust guide moving device moving the dust guide member in a direction of extending downward from a lower portion of the blade case as the cutting unit moves downward.
A cutting device comprising:
- a cutting unit having a rotary blade;
- a table for placing a workpiece thereon;
- and
- a support device vertically movably supporting the cutting unit relative to the table, wherein:
- the cutting unit includes:
- a blade case covering an upper portion of the rotary blade and having a dust discharge member for discharging dust produced at a cutting region;
- and
- a dust guide device for guiding the dust discharged from the dust discharge member into a dust container;
- wherein:
- the dust guide device includes a first transfer passage forming member having one end connected to the dust container, and a second transfer passage forming member having one end connected to the dust discharge member;
- the first transfer passage forming member is fixedly supported on the support device;
- the second transfer passage forming member is fixedly mounted to the blade case;
- and
- the other end of the first transfer passage forming member and the other end of the second transfer passage forming member are connected to be movable relative to each other as the cutting unit moves vertically.
A cutting device comprising:
- a cutting unit having a rotary blade;
- a table for placing a workpiece thereon;
- and
- a support device vertically movably supporting the cutting unit relative to the table, wherein:
- the cutting unit includes:
- a blade case covering an upper portion of the rotary blade and having a dust discharge member for discharging dust produced at a cutting region;
- and
- a dust guide device disposed on at least one of an upstream side and a downstream side of the dust discharge member with respect to a flow of the dust;
- wherein a position of at least a part of the dust guide device changes relative to the dust discharge member according to change of the vertical position of the cutting unit.
Dependencies are inferred from the claim text.