发明名称 |
Method for the Angle-Controlled Turning of a Part |
摘要 |
A power wrench (10) for turning a screw is supplied by a hydraulic unit (25) that contains a positive displacement pump (26) and supplies a defined rate of flow. The pressure in a hydraulic pressure line (28) is measured by a pressure sensor (32) and provided to a control unit (31). The volume flow of the hydraulic unit (25) is determined in amount per unit of time. The piston stroke per unit of time can be determined due to the fact that the filling volume of the hydraulic cylinder is known. The piston acts upon a lever system that turns the moving part. The turning angle per unit of time can be determined due to the fact that the lever length is known. This makes it possible to dispense with an angle measuring device and to determine the turning angle merely by measuring pressure.
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申请公布号 |
US2009000397(A1) |
申请公布日期 |
2009.01.01 |
申请号 |
US20050578065 |
申请日期 |
2005.04.07 |
申请人 |
WAGNER PAUL-HEINZ;SITTIG ULF;ANDRES GUENTER;THELEN BERND |
发明人 |
WAGNER PAUL-HEINZ;SITTIG ULF;ANDRES GUENTER;THELEN BERND |
分类号 |
B25B23/14;B25B21/00;B25B23/145 |
主分类号 |
B25B23/14 |
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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