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electric pulse tool

A technology of electric pulses and tools, applied in the direction of motor tools, manufacturing tools, wrenches, etc., can solve the problems of operator reaction force and other problems, and achieve the effect of improving characteristics

Active Publication Date: 2021-03-16
ATLAS COPCO INDAL TECHN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] A problem encountered when operating power tools, especially hand-held power tools, is that the operator is subject to reaction forces

Method used

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Embodiment approach

[0024] According to an exemplary embodiment of the invention, the sensor 25 is arranged to determine whether energy is supplied on the output shaft. According to one embodiment, the sensor 25 is arranged on the output shaft 12 . Alternatively, the sensor 25 may be located on the gear unit. However, the sensor 25 may be located elsewhere in the electrical pulse tool. According to an exemplary embodiment of the present invention, the sensor 25 is a torque sensor 25 . According to another exemplary embodiment of the invention, the sensor 25 is a position sensor 25 .

[0025] In the electric pulse tool according to the prior art, electric current is intermittently supplied to the motor so that the motor generates torque pulses. Therefore, less reaction force is applied to the worker, and the worker can perform screw fastening work with one hand.

[0026] figure 2 Pulse width modulation of an electric motor in a power tool according to the prior art is shown. figure 2 A sch...

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Abstract

The invention relates to a method for configuring an electric pulse tool, in which torque is transmitted as torque pulses on an output shaft of the electric pulse tool. where for each cycle, during the current on-time (T 接通 ) to provide current pulses to the motor during the determined current off time (T 关闭 ) during which the current supply is suspended. The method includes retrieving a parameter value reflecting an amount of reactive force capable of being exposed to an operator of the electrical impulse tool. and determine the current off time (T 关闭 ).

Description

technical field [0001] The invention relates to a controller for an electric pulse tool and a method for a controller for an electric pulse tool. In particular, the invention relates to a controller and a method of a controller for configuring an electrical pulse tool with respect to the reaction force characteristics of the electrical pulse tool. Background technique [0002] Power tools for tightening bolts, screws and nuts are used in many different applications. In some of these applications, it is desirable or even required to be able to control the clamping force, or at least the associated torque. Such power tools are typically controlled to rotate the output shaft of the power tool, thereby measuring torque. When the torque reaches a predetermined value, the electric tool is controlled to stop the rotation of the output shaft. This can be achieved, for example, by cutting power to the tool, or the clutch can be slipped. [0003] A problem encountered when operati...

Claims

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Application Information

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IPC IPC(8): B25B21/00
CPCB25B21/00B25B23/147B25B21/02
Inventor A·克劳特布利克斯特
Owner ATLAS COPCO INDAL TECHN
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