Sliding component e.g. cylinder and piston, machining accuracy measuring apparatus for electric motor, has measuring unit measuring position relative to components, where machining accuracy is measured by resistance and position values

摘要

The apparatus has a driving unit with an electric motor (3), a energy transmission unit (4) and a supply source (5) for driving a sliding component e.g. sliding hole and shaft forming components (1, 2) such as cylinder and piston. A current measuring instrument (6) measures the power provided by the unit. A location measuring unit measures the position relative to the components (1, 2). A value of sliding resistance produced, when the components (1, 2) slides, is calculated after the measurement of the power value. Machining accuracy is measured by the resistance value and the position value.