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1. 发明专利

JP2001179646A AUTOMATIC THREAD FASTENING APPARATUS 失效
公开(公告)号：JP2001179646A
公开(公告)日：2001-07-03
申请号：JP37092199
申请日：1999-12-27
申请人： NITTO SEIKO KK
发明人： UMEHARA YUKIHIRO , FUKUI KAZUHIRO
IPC分类号： B23P19/06 , B25B23/14
摘要： PROBLEM TO BE SOLVED: To provide an automatic thread fastening apparatus capable of remarkably increasing the reliability of thread fastening results. SOLUTION: This automatic thread fastening apparatus is provided with a driver bit 3 receiving the driving of a motor 2 so as to rotate, and engaging with the head of a thread, a torque sensor 4 for detecting the fastening torque of the thread, and an angle detecting means for detecting the rotational angle of the thread, and involves a control unit 10 for comparing the fastening torque of the thread detected by the torque sensor 4 with predetermined reference torque, measuring the rotational angle of the thread from the time when the fastening torque has reached the reference torque, determining whether the rotational angle is included between an angle upper limit and an angle lower limit which are predetermined when the fastening torque has reached the predetermined final fastening torque, and judging whether thread fastening is good or bad.

2. 发明专利

JP2001005503A COMMUNICATION METHOD BETWEEN OUTSIDE EQUIPMENT CONTROLLER AND PERSONAL COMPUTER 失效
公开(公告)号：JP2001005503A
公开(公告)日：2001-01-12
申请号：JP17472099
申请日：1999-06-21
申请人： NITTO SEIKO KK
发明人： UMEHARA YUKIHIRO , KITAMURA YASUYUKI , FUKUI KAZUHIRO
IPC分类号： G05B19/04
摘要： PROBLEM TO BE SOLVED: To allow to communicate only with a specific outside equipment controller set in a personal computer. SOLUTION: In this communication method, a personal computer is provided with a programming tool for communicating with a sequential controller 1 which outputs a driving signal for driving a working unit, and an outside equipment controller side is constituted so that the identification information can be stored, and the personal computer side is constituted so that the identification information of the outside equipment controller can be read, and compared with preliminarily set identification information, and when they are made coincident, the program tool can be started. Thus, since the programming tool is made valid only for the sequential controller decided at the time of setting the working unit, and made invalid for the other sequential controllers an illegal use of the programming tool can be prevented. Also, the use of any old type programming tool can be excluded by changing the identification number each time when the version up of the operation program of the sequential controller is executed or the like.

3. 发明专利

JP2002018654A AUTOMATIC SCREW TIGHTENING MACHINE 失效
公开(公告)号：JP2002018654A
公开(公告)日：2002-01-22
申请号：JP2000199958
申请日：2000-06-30
申请人： NITTO SEIKO KK
发明人： TANAKA TOSHIO , UMEHARA YUKIHIRO , FUKUI KAZUHIRO
IPC分类号： B23P19/06 , B25B23/14 , H02P6/06 , H02P6/08 , H02P6/17
摘要： PROBLEM TO BE SOLVED: To provide an automatic screw tightening machine capable of accurately tightening a screw with compensating variation of load current from an effect of motor intrinsic characteristics. SOLUTION: An automatic screw tightening machine includes a driver bit 3 driven by a motor 2 to rotate and engaging with a screw head, an encoder 2a detecting rotation angles of a drive shaft 2b of the motor 2, and a current detection part 10 detecting a load current of the motor 2. The automatic screw tightening machine includes current compensation data predetermined according to rotation angles detected by the encoder 2a and is provided with a control unit 4 compensating load current of the motor 2 detected by the current detection part 10 based on the current compensation data.

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