-
公开(公告)号：US20180130489A1
公开(公告)日：2018-05-10
申请号：US15600865
申请日：2017-05-22
发明人： CHIH-CHUN CHENG , PING-CHUN TSAI , WEN-NAN CHENG , YU-HSIN KUO , YIN-CHUN CHENG , YU-SHENG CHIU
CPC分类号： B23Q17/0976 , B23Q15/12 , G05B19/401 , G05B2219/37435 , G05B2219/41256 , G05B2219/49077
摘要： A spindle speed adjusting device in machining is provided, which may include a plurality of signal detection modules, a signal capturing module and a signal processing module. Each of the signal detection modules may keep measuring the vibration signals in machining. The signal capturing module may capture the vibration signals. The signal processing module may execute a transmissibility analysis to obtain the transmissibility between the signal detection modules, and execute a frequency response fitting according to the transmissibility to obtain a plurality of system dynamic parameters, and then execute a stability lobe diagram analysis to calculate the optimized spindle speed of the machining tool so as to make the machining tool operate at the optimized spindle speed. The signal processing module may repeatedly execute the transmissibility analysis, the frequency response fitting and the stability lobe diagram analysis to keep updating the optimized spindle speed until the machining process ends.
-
公开(公告)号：US20210372862A1
公开(公告)日：2021-12-02
申请号：US17078125
申请日：2020-10-23
发明人： CHIH-CHUN CHENG , WEN-NAN CHENG , PING-CHUN TSAI , SHAO-RONG SU , YAO-HUAN LEI , WEI-JEN CHEN
摘要： A sensor placement optimization device is provided, which may include a preprocessing circuit and an operational circuit. The preprocessing circuit may perform a pre-process for the sensing signals of a plurality of temperature sensors, installed on a machine tool, to generate a pre-processed data. The operational circuit may execute a normalization for the pre-processed data to generate a normalized data, perform a principal component analysis for the normalized data to generate a dimensionality-reduced data and implement a principal component regression for the dimensionality-reduced data to obtain the contributions of the temperature sensors. Then, the operational circuit may rank the temperature sensors according to the contributions thereof to generate a ranking result and execute a screening process according to the ranking result to select at least one redundant sensor from the temperature sensors; afterward, the operational circuit may remove the redundant sensor from the temperature sensors.
-
公开(公告)号：US20210123830A1
公开(公告)日：2021-04-29
申请号：US16810251
申请日：2020-03-05
发明人： CHIH-CHUN CHENG , YU-SHENG CHIU , WEN-NAN CHENG , PING-CHUN TSAI , YU-HSIN KUO , WEI-JEN CHEN , DE-SHIN LIU , CHEN-WEI CHUANG , CHIH-TA WU , WEN-PENG TSENG , WEN-CHIEH KUO
IPC分类号： G01M5/00
摘要： A machine tool health monitoring method which is to use a predetermined plurality of vibration sensors on a plurality of components of a machine tool and to drive motors of the machine tool to excite the machine tool using an electronic device while the health status of the machine tool is good, and then to perform a diagnostic process to obtain a characteristic cluster consisting of a plurality of modals, and then to define the characteristic cluster as a sample health characteristic cluster. The diagnostic process includes the procedures of vibration transmissibility obtaining, singular value decomposition, curve fitting and modal establishing. In addition, excite the machine tool and proceed the diagnosis process to obtain a current health characteristic cluster. Finally, the current health characteristic cluster is compared with the sample health characteristic cluster to judge whether the machine tool is healthy or not.
-
-
搜索结果
3 条记录 (耗时 0.013 秒)
