Manufacturing method of cylindrical body crimp terminal
AssigneesFurukawa Electric Co., Ltd., Furukawa Automotive Systems Inc.
InventorsRyusuke Terashima, Mikio Kuwabara, Kentaro Sakamoto
Life of this patent
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Abstract
Following the cylindrical bend processing of the shape crimping portion corresponding part corresponding to the crimping section in the sheet-shaped terminal base material, the high bending-rate processing process of bend processing at a bending rate higher than a bending rate for plastically deforming at least a part of a deformation portion to be plastically deformed in a predetermined bend processing shape in the crimping portion corresponding part, and the shaping process of shaping the crimping portion corresponding part into the cylindrical crimping section are performed in this order.
Claims11
A manufacturing method of a cylindrical body for processing at least a part of a bend processing portion of a sheet member from an unprocessed shape into a cylindrical shape, the manufacturing method comprising performing in order:
- a high bending-rate processing process of bend processing at least a part of the bend processing portion in a width direction at a bending rate higher than a bending rate for plastically deforming the part from the unprocessed shape into the cylindrical shape;
- and
- a shaping process of shaping the bend processing portion processed in the high bending-rate processing process into the cylindrical shape such that each end part of the bend processing portion in a width direction are butted against each other when the bend processing portion is shaped processed into the cylindrical shape, and an inward force occurs in each of the end parts that are abutted against each other,
- wherein the bend processing portion that is formed by the high bending rate processing process is formed into a V shape, and
- wherein a curvature of a valley formed by the V shape of the V shaped bend processing portion is greater than a curvature of the cylindrical shape.
A manufacturing method of a crimp terminal having a cylindrical crimping section, the manufacturing method comprising:
- a high bending-rate processing process including
- forming a sheet member by a sheet-shaped terminal base material comprising a crimping portion corresponding part which corresponds to the crimping section before a bend processing,
- bend processing at least a part of a deformation portion to be plastically deformed into a predetermined bend processing shape in the crimping portion corresponding part, at a bending rate higher than a bending rate of plastically deforming the part from an unprocessed shape into a cylindrical shape, along with the bend processing of at least the crimping portion corresponding part of the terminal base material from the unprocessed shape into the cylindrical shape;
- and
- a shaping process of shaping, after the high bending-rate processing process, the crimping portion corresponding part processed in the high bending-rate processing process into the crimping section of the cylindrical shape, such that each end part of the crimping portion corresponding part in a width direction are butted against each other when the crimping portion corresponding part is shaped processed into the cylindrical shape, and an inward force occurs in each of the end parts that are abutted against each other,
- wherein the crimping portion formed by the high bending rate processing process is formed into a V shape, and
- wherein a curvature of a valley formed by the V shape of the V shaped crimping portion is greater than a curvature of the cylindrical shape.
A manufacturing method of a crimp terminal having a cylindrical crimping section, the manufacturing method comprising:
- a high bending-rate processing process including
- forming a sheet member by a sheet-shaped terminal base material comprising a crimping portion corresponding part which corresponds to the crimping section before a bend processing,
- bend processing at least a part of a deformation portion to be plastically deformed into a predetermined bend processing shape in the crimping portion corresponding part, at a bending rate higher than a bending rate of plastically deforming the part from an unprocessed shape into a cylindrical shape, along with the bend processing of at least the crimping portion corresponding part of the terminal base material from the unprocessed shape into the cylindrical shape;
- a shaping process of shaping, after the high bending-rate processing process, the crimping portion corresponding part processed in the high bending-rate processing process into the crimping section of the cylindrical shape such that each end part of the crimping portion corresponding part in a width direction are butted against each other when the crimping portion corresponding part is shaped processed into the cylindrical shape, and an inward force occurs in each of the end parts that are abutted against each other;
- inserting into the crimping section a conductor tip having an insulating cover peeled off at least at a tip side of an insulated wire which covers a conductor with the insulating cover;
- and
- crimping the crimping section,
- wherein the crimping portion formed by the high bending rate processing process is formed into a V shape, and
- wherein a curvature of a valley formed by the V shape of the V shaped crimping portion is greater than a curvature of the cylindrical shape.
Dependencies are inferred from the claim text.