Power tool operation method
A technology of electric tools and operation methods, which is applied in the fields of manufacturing tools, motor control, motor generator control, etc., and can solve the problems that electric tools cannot exert better locking efficiency and torque cannot be accurately controlled
Inactive Publication Date: 2020-10-30
简毓臣
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Problems solved by technology
[0002] Electric tools are driven by electric motors to efficiently lock screws, nuts or other screwed components on the screwed device. Electric tools usually lock the screwed components according to the set target torque value, and let the electric The motor runs at high speed to achieve efficient locking operation, but in this way, when the screwed components are locked, the main (rotation) shaft of the electric motor is still at high speed. Therefore, when the electric motor is turned off at high speed, the operator will obviously Feel the reaction force fed back by the spindle of the electric motor, and the reaction force will make the torque difficult to control accurately
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[0037] Hereinafter, the devices, circuits, processes, steps and achieved effects of the operating method of the electric tool of the present invention will be described by enumerating corresponding preferred embodiments in conjunction with each figure. However, the devices, circuits, processes, steps and appearances of the electric tools and their operating methods in the drawings are only used to illustrate the technical features of the present invention, rather than to limit the present invention.
[0038] Such as figure 1 As shown, the power tool 100 of the present invention includes a body 110 , a trigger 130 , a power driver 150 , an adapter 170 , and a remote device 180 . The body 110 can be composed of multiple shells, and can be in any shape. The trigger 130 is disposed on the body 110 . The electric driver 150 is disposed in the body 110 and connected to the trigger 130 . The adapter 170 is connected to the electric driver 150 and has a connecting seat 171 for sele...
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A power tool operation method includes the step of providing a light load trigger condition and a target torque parameter, the step of triggering an electric drive of a power tool through a drive current to cause the electric drive to generate an operating signal, the step of monitoring the operating signal of the electric drive, the step of limiting the maximum current change rate of the drive current when the operating signal satisfied the light load trigger condition, so that the electric drive operates at a reduced speed, the step of monitoring an output torque value of the electric drive,and the step of stopping the output of the drive current when the output torque value satisfied the target torque parameter. Torsion control over the electric motor can be achieved, and counter-acting force generated at the moment when the electric motor is turned off is avoided.
Description
technical field [0001] The invention relates to an electric tool, in particular to a method for operating the electric tool. Background technique [0002] Electric tools are driven by electric motors to efficiently lock screws, nuts or other screwed components on the screwed device. Electric tools usually lock the screwed components according to the set target torque value, and let the electric The motor runs at high speed to achieve efficient locking operation, but in this way, when the screwed components are locked, the main (rotation) shaft of the electric motor is still at high speed. Therefore, when the electric motor is turned off at high speed, the operator will obviously Feel the reaction force fed back from the spindle of the electric motor, and the reaction force will make the torque unable to be precisely controlled. [0003] If the speed of the electric motor before locking is limited to a low speed in order to avoid reaction force, although the torque can be co...
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IPC IPC(8): H02P29/00B25F5/00
CPCB25F5/00H02P29/00H02P3/18H02P29/032H02P25/16
Inventor 简毓臣
Owner 简毓臣