Method for manufacturing coil
OwnerShiro Shimaharainventor
Life of this patent
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Abstract
A method for manufacturing a coil is composed of the step of rolling a conductor of trapezoidal cross section or a conductor of rectangular cross section in the longitudinal direction thereof. An amount of deformation is gradually increased from a side of the conductor corresponding to the inner side of the coil toward a side of the conductor corresponding to the outer side of the coil. As a result, the conductor of trapezoidal cross section is formed into a coiled conductor of rectangular cross section, or the conductor of rectangular cross section is formed into a coiled conductor of trapezoidal cross section. In this way, rolling and coiling of the conductor are performed simultaneously to produce a coil.
Claims9
A method for manufacturing a coil, in which a conductor of trapezoidal cross section is rolled in the longitudinal direction thereof thereby causing deformation of said conductor such that the amount of deformation is gradually increased from a side of the conductor of trapezoidal cross section corresponding to the inner side of a coil to be formed toward a side of the conductor of trapezoidal cross section corresponding to the outer side of the coil to be formed, so that the conductor of trapezoidal cross section is formed into a coiled conductor of rectangular cross section through simultaneous rolling and coiling of the conductor and the coiling of the conductor is achieved by forces generated during the rolling operation.
A method for manufacturing a coil, in which a conductor of rectangular cross section is rolled in the longitudinal direction thereof thereby causing deformation of said conductor such that the amount of deformation is gradually increased from a side of the conductor of rectangular cross section corresponding to the inner side of a coil to be formed toward a side of the conductor of rectangular cross section corresponding to the outer side of the coil to be formed, so that the conductor of rectangular cross section is formed into a coiled conductor of trapezoidal cross section through simultaneous rolling and coiling of the conductor and the coiling of the conductor is achieved by forces generated during the rolling operation.
Dependencies are inferred from the claim text.