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US 2018/0207731 A1Published application
Drilling device and drilling method using such a drilling device
AssigneeLe Creneau Industriel
InventorsSebastien BAUD, Bruno BOTTON
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AssigneeLe Creneau Industriel
InventorsSebastien BAUD, Bruno BOTTON
Estimating the term…
The invention relates to a drilling device for drilling a sheet having conical portions, comprising a tool-holder plate provided with a plurality of rotary drilling spindles with drill bits oriented according to drilling directions parallel to a mean drilling direction, said drilling spindles being distributed, on the one hand, in columns intended to be arranged according to an axial direction and, on the other hand, in rows intended to be arranged according to a transverse direction at right angles to the axial direction, the device comprising at least two rows of spindles and at least two columns of spindles. The center-to-center distance between two spindles of a row is different from the center-to-center distance between two spindles of another row.
Drilling device for drilling a sheet having conical portions, comprising a tool-holder plate provided with a plurality of rotary drilling spindles with drill bits oriented according to drilling directions parallel to a mean drilling direction, said drilling spindles being distributed, on the one hand, in columns intended to be arranged according to an axial direction and, on the other hand, in rows intended to be arranged according to a transverse direction at right angles to the axial direction, the device comprising at least two rows of spindles and at least two columns of spindles, characterized in that the center-to-center distance between two spindles of a row is different from the center-to-center distance between two spindles of another row.
Drilling device for drilling a sheet having conical portions, comprising a tool-holder plate provided with a plurality of rotary drilling spindles with drill bits oriented according to drilling directions parallel to a mean drilling direction, said drilling spindles being distributed, on the one hand, in columns intended to be arranged according to an axial direction and, on the other hand, in rows intended to be arranged according to a transverse direction at right angles to the axial direction, the device comprising at least two rows of spindles and at least two columns of spindles, characterized in that the center-to-center distance between two spindles of a row is different from the center-to-center distance between two spindles of another row, and in that G is the nominal center-to-center distance between two spindles of a same row in a matrix configuration of the tool-holder plate and ΔEi is a maximum inter-patch deviation determined for the row Li which would result from drillings over a conical portion by a matrix configuration of the tool-holder plate, i being an integer number i=1 to n, where n is the number of rows of spindles of the tool-holder plate, characterized in that the distance between two spindles of a same row i is given by the relationship:
Dependencies are inferred from the claim text.