公开(公告)号：EP3450110A1

公开(公告)日：2019-03-06

申请号：EP17188716.9

申请日：2017-08-31

申请人： Jan OSSA trading as ZBM OSSA ,  Akademia Gorniczo-Hutnicza im. Stanislawa Staszica w Krakowie

发明人： OSSA, Jan ,  ZAWADA, Lukasz ,  PIATEK, Pawel ,  PILAT, Adam ,  PAULUK, Mariusz ,  BARANOWSKI, Jerzy ,  DZIWINSKI, Tomasz

IPC分类号： B25F5/00 ,  B25B21/00 ,  H03K17/18 ,  B25B23/147

摘要： The invention is related to a position sensing detector (8) of a gear lever (7) of a torque tool (1) which is provided for tightening and loosening screw connections with adjustable torque. The detector (8) comprises a transformer (9), the primary winding (9A) of which is placed in the body of a motor (2) of the torque tool (1), while the secondary winding (9B) is placed in the body of a gearbox (4). The gearbox (4) is fixed to the motor (2) in a way that ensures mutual rotation of their bodies by any angle. The primary winding (9A) is connected with an electronic excitation system (10) of periodically variable voltage and with an electronic measuring system (11), while the secondary winding (9B) is connected parallelly to a capacitor (12) and an electrical contact (13) connected with the gear lever (7). The electronic measuring system (11) of the primary winding (9A) is connected with a comparator circuit (14), configuration of which allows, on the basis of the set current values (W) and the ongoing measurement of the current from the measuring system (11), to send a signal (T) on the status of the position of the gear lever (7) to the control unit (3) of the motor (2) in the torque tool (1).

公开(公告)号：EP3450107A1

公开(公告)日：2019-03-06

申请号：EP17188780.5

申请日：2017-08-31

申请人： Jan OSSA trading as ZBM OSSA ,  Akademia Gorniczo-Hutnicza im. Stanislawa Staszica w Krakowie

发明人： OSSA, Jan ,  ZAWADA, Lukasz ,  OSSA, Bartosz ,  PIATEK, Pawel ,  PILAT, Adam ,  PAULUK, Mariusz ,  MARCHEWKA, Dariusz ,  BARANOWSKI, Jerzy ,  DZIWINSKI, Tomasz

IPC分类号： B25B23/147 ,  G01L3/00 ,  B25B21/00

摘要： The invention relates to a control system of a torque tool (1) provided for tightening and unscrewing of screw connections with adjustable torque. The system has a controller (3) of an electric motor (2) of the torque tool (1), and comprises a sensor (6) measuring the torque. The sensor (6) is configured to measure torsional deformations of a reduction gear (5) component of the torque tool (1) transferring the torque. Moreover, the sensor (6) is coupled with the controller (3), and the controller is configured to correct the output control signal to the electric motor (2) on the basis of the signal from the sensor (6) of the measured actual torque. The application also refers to a method of controlling the torque tool (1).