Method for forming prearranged rupture portion for air bag door
AssigneeInoac Corporation
InventorYuzo Ito
Life of this patent
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Abstract
A method for forming a prearranged rupture portion for an air bag door including the steps of setting an instrument panel on a fixing jig, and, then measuring, prior to forming grooves that make a prearranged rupture portion, the position of the back surface of a substrate of the instrument panel by a measuring device. When forming the first groove, the depth of the first groove formed by a working device is controlled with reference to a preset position of the set surface of the fixing jig, and when forming the second groove by the working device, correction is made depending on the position of the back surface of the substrate measured by the measuring device, and the depth of the second groove formed by the working device is controlled based on this corrected data
Claims5
A method for forming a prearranged rupture portion for an air bag door in a vehicle interior member composed of a substrate and layered materials covering a surface of the substrate in which the rupture portion comprises a first groove perforating from a back surface of the substrate through the substrate to reach the layered materials and a second groove formed only in the back surface of the substrate, the method comprising the steps of:
- setting the vehicle interior member so that a surface of the layered materials is in touch with a set surface of a fixing means formed so as to adapt to the surface of the layered materials;
- measuring a position of the back surface of the substrate by a measuring means;
- and
- forming the first and second grooves by a working means, wherein
- when forming the first groove, a depth of the first groove formed by the working means is controlled with reference to a preset position of the set surface of the fixing means so as to ensure a residual thickness size of the layered materials;
- and
- when forming the second groove, a depth of the second groove formed by the working means is controlled with reference to the position of the back surface of the substrate measured by the measuring means so as to ensure a residual thickness size of the substrate.
Dependencies are inferred from the claim text.