Variable die, and pressing apparatus and method
AssigneePosco
InventorJae-Wook Lee
Life of this patent
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Abstract
A variable die according to an embodiment of the present invention may comprise: a first lower die part; and a first upper die part disposed above the first lower die part, wherein: the first lower die part comprises a first lower die center part and a first lower die side part; the first lower die center part includes a first sensor unit which measures a distance; a first lower die side part includes an inner member having a slope, and a drive unit which moves the inner member toward the first lower die center part; the first sensor unit measures a forming distance which is the distance from the first sensor unit to a material; and the driver unit is driven on the basis of the forming distance to adjust a correction distance which is the moving distance of the inner member.
Claims18
A variable die comprising:
- a first lower die portion;
- and
- a first upper die portion disposed above the first lower die portion,
- wherein the first lower die portion includes:
- a first lower die center portion, on which a material is seated, and including a first sensor unit;
- and
- a first lower die side part installed on a side surface of the first lower die center portion,
- the first lower die side part includes:
- an inner member having an inclined surface close to the first lower die center portion from top to bottom;
- and
- a driving unit moving the inner member in a first direction, a direction toward the first lower die center portion,
- the first upper die portion includes:
- a first upper die center portion disposed above the first lower die center portion and moving downwardly toward the first lower die center portion;
- and
- a first upper die side part installed on a side surface of the first upper die center portion, moving downwardly, guided by the inclined surface when moving downwardly and rotatably moving to a side surface of the first lower die center portion,
- the first sensor unit measures a forming distance, a distance from the first sensor unit to the material, and
- the driving unit is driven based on the forming distance to adjust a correction distance, a moving distance of the inner member.
A pressing method comprising:
- a first pressing operation of forming a first material with a variable die under a forming condition determined by a first set distance;
- a forming distance measuring operation of measuring a first forming distance, a distance between the first material and a first sensor unit of the variable die;
- a set distance correcting operation of determining a second set distance, a set distance for a following round, based on a difference between the first set distance and the first forming distance;
- and
- a second pressing operation of forming a second material following the first material with the variable die under a forming condition determined by the second set distance.
Dependencies are inferred from the claim text.