Synchronous speed test load electric screwdriver
A technology of electric screwdriver and reducer, which can be applied to screwdrivers, motor tools, wrenches, etc., and can solve the problems of easily damaged motors and impact motors
Active Publication Date: 2018-08-10
SUZHOU QUANFENG PRECISION MACHINERY
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
Among them, the motor is connected to the screwdriver head through a gear reducer, that is, in the current electric screwdriver, the motor and the screwdriver head are hard-connected, and the hard connection will directly impact the motor when it is overloaded and stalled, which is easy to damage the motor
Method used
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Embodiment Construction
[0027] Below with reference to accompanying drawing and in conjunction with embodiment, describe the present invention in detail:
[0028] Such as figure 1 As shown, a synchronous speed measuring load electric screwdriver includes a bit 1, a bit dismounting device 2, a torque adjustment nut 3, a coupling seat sleeve 4, a coupling sleeve 5, a jacket 6, and a controller 7, wherein The bit 1 is connected with the bit dismounting device 2, the torque adjustment nut 3 is arranged outside the coupling seat 4, and the controller 7 is arranged at the tail. In this embodiment, by rotating the torque adjustment nut 3, the outer rotor 81 is changed. The coupling area between the inner rotor 91 and the inner rotor 91 can be adjusted to an appropriate torque to meet the needs of different screws for different locking torques.
[0029] Such as figure 2 shown, for figure 1 The cross-sectional view of the coupling sleeve 5 is provided with an outer rotor sleeve 8, and an output shaft 10, ...
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The invention discloses an electric screwdriver for synchronously measuring a speed and a load. The electric screwdriver comprises a bit, a driving shaft, a cover, an output shaft, a motor, a speed reducer and a controller; the driving shaft is connected with an outer rotor through an outer rotor sleeve; the output shaft is connected with an inner rotor through an inner rotor magnetic shaft; coil sides are respectively arranged at the outer peripheries of the outer rotor sleeve and the inner rotor magnetic shaft, and are provided with corresponding through holes; and a set of infrared sensors capable of penetrating through the through holes to finish infrared butt joint is arranged on devices without rotating near the through holes. The electric screwdriver is provided with the corresponding through holes and infrared sensors for generating wave shapes, and obtains the rotating speed and the load according to the wave shapes to serve as the feedback of speed control and power control; and meanwhile, the overloading is judged according to the change of the wave shapes, so that the controller can quickly detect the overloading to close the motor under the overloading condition of the electric screwdriver, that is, the quick overloading protection is provided to the electric screwdriver.
Description
technical field [0001] The invention relates to the field of electric tools, in particular to an electric screwdriver with synchronous speed measurement and load detection. Background technique [0002] With the development of magnetic materials and the emergence of new magnetic materials, the torque transmitted by the magnetic drive coupling will become larger and smaller, and its application range will become wider and wider, except for pumps and reactors. , Valves, hydraulic cylinders and cylinders, and other occasions that need to solve the problem of dynamic seal leakage can be applied. It can be expected that the magnetic drive coupling will have a very broad market prospect. [0003] The magnetic transmission coupling is a non-contact coupling. It is generally composed of two magnets inside and outside. The inner magnet is connected to the driven part, and the outer magnet is connected to the power part. In addition to the function of elastic coupling to cushion and...
Claims
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IPC IPC(8): B25B21/00B25B23/147B25B23/151B25B23/00
CPCB25B21/00B25B23/00B25B23/147
Inventor 徐小芬
Owner SUZHOU QUANFENG PRECISION MACHINERY