发明名称 Rotary encoder and method of its manufacture
摘要 <p>The system has a graduated ring (1.1) rotatable about an axis relative to an outer ring (2). Two rolling surfaces (1.11, 2.11) are formed on each of the rings, respectively. Rolling bodies i.e. balls (3) are arranged between the surfaces such that a bearing assembly is free of radial play. A graduating machine applies angle scaling (1.2) directly onto the ring (1.1) such that a geometrical pattern of the scaling in one region deviates from a geometrical pattern in another region as a function of rotational eccentricities of the assembly. A scanning head (4) scans the scaling. An independent claim is also included for a method for producing an angle-measurement system.</p>
申请公布号 EP1903316(A1) 申请公布日期 2008.03.26
申请号 EP20070010846 申请日期 2007.06.01
申请人 DR. JOHANNES HEIDENHAIN GMBH 发明人 MITTERREITER, JOHANN
分类号 G01D5/347;G01B21/22 主分类号 G01D5/347
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