Double-pulse feedback type electric screwdriver
An electric screwdriver, double-pulse technology, applied in the field of double-pulse feedback electric screwdriver, can solve the problems of impact motor, easily damaged motor, etc.
Active Publication Date: 2017-05-10
SUZHOU QUANFENG PRECISION MACHINERY
View PDF5 Cites 5 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
no. 3 example
[0042] In the third embodiment of the present invention, on the basis of the preferred embodiment, the magnet 82 is changed
[0043] Set, in the preferred embodiment, "and the size and length between the respective magnets 82 on the outer rotor sleeve 8 and the inner rotor magnetic shaft 9 are also the same" is replaced by "and the respective magnets 82 on the outer rotor sleeve 8 and the inner rotor magnetic shaft 9 Different in size and length", for the convenience of explanation, in this embodiment, three magnets 82 are arranged on the outer rotor cover 8 and the inner rotor magnetic shaft 9, and at this time, the outer rotor cover 8 is called the first magnet, the second magnet, the second magnet, The third magnet, the magnetic axis 9 of the inner rotor is called the fourth magnet, the fifth magnet, and the sixth magnet in turn, wherein the lengths between the first magnet, the second magnet, and the third magnet decrease successively, and the fourth magnet, the fifth magne...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a double-pulse feedback type electric screwdriver. The double-pulse feedback type electric screwdriver comprises a bit, a driving shaft, an outer sleeve, 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. A detector assembly detecting rotation of the outer rotor is arranged on the periphery of the outer rotor sleeve. A detector assembly detecting rotation of the inner rotor is arranged on the periphery of the inner rotor magnetic shaft. According to the double-pulse feedback type electric screwdriver, two groups of waveforms are generated through the arranged detector assemblies, and the respective rotation speeds and the respective loads are obtained according to the waveforms and used as feedback on speed control and power control; whether overload happens or not is judged according to the comparison of the two groups of waveforms, so that under the condition of overload, the controller can rapidly detect overload and then switches off the motor, and rapid overloading protection is provided for the electric screwdriver; and whether the bit is overloaded or motor stalling happens can be further judged, and therefore a user can conveniently conduct the effective improvement in time according to the specific fault of the screwdriver.
Description
technical field [0001] The invention relates to the field of electric tools, in particular to a double-pulse feedback electric screwdriver. 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 absorb vibration, the magnetic t...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B25B21/00H02K11/215H02K11/22H02K7/14H02K49/10
CPCB25B21/00H02K7/14H02K49/106
Inventor 徐小芬
Owner SUZHOU QUANFENG PRECISION MACHINERY