发明名称 |
Method of estimating a life of ball screw included in electric injection molding machine and life estimating system |
摘要 |
An injection unit including a heating barrel and an injection screw rotationally and axially movable and placed in the heating barrel is disposed on one side of a clamping mechanism for clamping a mold. The injection screw is driven and controlled for operation through a ball screw by an electric motor. Products, each of a moving speed of the ball screw and an operating current supplied to the electric motor in a unit time, are accumulated to calculate a total energy value indicating the amount of total energy supplied to the ball screw. A life energy value is predetermined on the basis of products, each of force generated by the ball screw and a moving speed of the ball screw. It is decided that a life of the ball screw has terminated when the total energy value A is equal to or greater than the life energy B (A>=B).
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申请公布号 |
US6332355(B1) |
申请公布日期 |
2001.12.25 |
申请号 |
US20000506681 |
申请日期 |
2000.02.18 |
申请人 |
TOSHIBA KIKAI KABUSHIKI KAISHA |
发明人 |
TOTANI TSUGINOBU;SASAKI KIYOSHI;KANDA AKIRA;IIMURA YUKIO;KOIKE JUN;KATOH FUMIYUKI;TAMAKI MASAHIRO;YAMAGUCHI YUTAKA |
分类号 |
B29C45/66;B29C45/50;B29C45/76;F16H57/00;G01N17/00;(IPC1-7):G01M5/00 |
主分类号 |
B29C45/66 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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