Title:
LASER MEASUREMENT SYSTEM FOR MEASURING GEOMETRIC ERROR IN SIX DEGREES OF FREEDOM OF ROTATING SHAFT, AND METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/103268
Kind Code:
A1
Abstract:
A laser measurement system for detecting geometric errors in the six degrees of freedom of a rotating shaft (6) and a method therefor. The system comprises: a laser transmission unit (1), a six-degree-of-freedom error measuring unit (2), a six-degree-of-freedom error sensing unit (3) and a servo tracking unit (4) which may be mounted on the rotating shaft (6) to be tested. The six-degree-of-freedom error measuring unit (2) emits light to the six-degree-of-freedom error sensing unit (3), and generates a measurement signal on the basis of the emergent light, as well as a reflected light and a retro reflective light from the six-degree-of-freedom error sensing unit (3). The servo tracking unit (4) comprises: a four-dimensional adjusting mechanism so as to achieve four-dimensional adjustment; a motor (405), which is fixedly mounted on the four-dimensional adjusting mechanism; an angle measuring sensor (403) for measuring a rotation angle of the motor (405); a mounting surface (406), which is fixed on the four-dimensional adjusting mechanism, which rotates coaxially with the motor (405) and on which the six-degree-of-freedom error sensing unit (3) is installed; and a control circuit, for controlling the servo tracking unit (4) on the basis of the measurement signal from the six-degree-of-freedom error measuring unit (2). The laser measurement system enables simultaneous and rapid measurement of geometric errors in the six degrees of freedom of a rotating shaft.
Inventors:
FENG QIBO (CN)
YANG JING (CN)
YANG JING (CN)
Application Number:
PCT/CN2017/083892
Publication Date:
June 14, 2018
Filing Date:
May 11, 2017
Export Citation:
Assignee:
UNIV BEIJING JIAOTONG (CN)
International Classes:
G01B11/00; G01B11/26; G01B11/27
Domestic Patent References:
| WO2016033766A1 | 2016-03-10 |
Foreign References:
| CN106595480A | 2017-04-26 | |||
| CN2577239Y | 2003-10-01 | |||
| US20060268281A1 | 2006-11-30 | |||
| CN106052570A | 2016-10-26 |
Other References:
CUI , CUNXING: "System for simultaneously measuring 6DOF geometric motion errors using a polarization maintaining fiber-coupled dual-frequency laser", OPTICS EXPRESS, vol. 24, no. 6, 18 March 2016 (2016-03-18), pages 6735 - 6748, XP055605648
Attorney, Agent or Firm:
BEIJING JANLEA PATENT AGENCY CO., LTD (CN)
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