Crimp state estimation apparatus for crimp contact terminal and quality determination apparatus for crimp contact terminal
View Patent ↗A crimp state estimation apparatus includes: an information input section for inputting information on an crimp contact terminal, an electric wire, an anvil, and the crimper and an input compression ratio of a core wire of the electric wire; and an estimation unit for calculating a total length of the bottom wall and the pair of crimp pieces after crimp in a cross section orthogonal to the core wire based on the information and the input compression ratio and estimating a cross-sectional shape of the bottom wall and the pair of crimp pieces after crimp based on the total length.
1. A crimp state estimation apparatus for estimating a crimp state of a crimp contact terminal when the crimp contact terminal comprising a bottom wall for positioning a core wire of an electric wire and a pair of crimp pieces upright from opposite margins of the bottom wall and the core wire are held between an anvil and a crimper and are crimped, the crimp state estimation apparatus comprising:
an information input section for inputting information on the crimp contact terminal, the electric wire, the anvil, and the crimper and an input compression ratio of the core wire; and
an estimation unit for calculating a total length of the bottom wall and the pair of crimp pieces after crimp in a cross section orthogonal to the core wire based on the information and the input compression ratio and estimating a cross-sectional shape of the bottom wall and the pair of crimp pieces after crimp based on the total length.
2. The crimp state estimation apparatus according to claim 1 further comprising:
a calculation unit for calculating a calculated compression ratio of the core wire based on the information; and
a crimp height calculation unit for finding spacing between the anvil and the crimper applied when a difference between the input compression ratio and the calculated compression ratio falls below a predetermined value.
3. The crimp state estimation apparatus according to claim 2 , wherein
the calculation unit calculates a total cross-sectional area of the core wire, the bottom wall, and the pair of crimp pieces after crimp;
calculates a cross-sectional area of the crimp contact terminal after crimp;
calculates a cross-sectional area of the core wire after crimp based on the total cross-sectional area and the cross-sectional area of the crimp contact terminal; and
calculates the calculated compression ratio of the core wire based on the cross-sectional area of the core wire and a cross-sectional area of the core wire before crimp input to the information input section.