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Signal processing device and tool

A signal processing device and tool technology, which is applied to power tools, manufacturing tools, striking tools, etc., can solve problems such as inability to accurately control the driving device, and achieve the effect of accurate torque value signals

Active Publication Date: 2020-04-21
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fear that this noise component will result in inaccurate control of the drive

Method used

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  • Signal processing device and tool
  • Signal processing device and tool
  • Signal processing device and tool

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0034] figure 1 It is a schematic diagram showing the configuration of the tool according to the first embodiment. figure 1 The tool includes a motor 1 , a reduction mechanism 2 , a hammer body 3 , an anvil 4 , a shaft 5 , a torque sensor 6 , an impact sensor 7 , a split ring 8 , a signal processing device 10 , an input device 11 and a display device 12 . figure 1 The tool is an impact driver provided with a rotating body that is rotated by an impact applied from a driving device.

[0035] The anvil 4 and the shaft 5 are integrally formed. A drill holder (not shown) for accommodating a driver drill is provided at the front end of the shaft 5 (the end opposite to the anvil 4 ). The reduction mechanism 2 decelerates the rotation generated by the motor 1 and transmits it to the weight 3 . The hammer body 3 rotates the anvil 4 and the shaft 5 by applying an impact force to the anvil 4 .

[0036] A torque sensor 6 and an impact sensor 7 are fixed to the shaft 5 . The torque...

no. 2 approach

[0075] The cutoff frequency of the filter 22 may be determined based on criteria different from the above.

[0076] Figure 11 ~ Figure 16 It is a graph for explaining the method of determining the cutoff frequency of the torque value signal in the tool according to the second embodiment. Figure 11 It is a graph showing the frequency spectrum of the torque signal of the 1st stroke. Figure 12 is a graph showing the frequency spectrum of the torque signal of the fifth stroke. Figure 13 is a graph showing the frequency spectrum of the torque signal of the tenth stroke. Figure 14 is a graph showing the frequency spectrum of the torque signal of the 20th stroke. Figure 15 is a graph showing the frequency spectrum of the torque signal of the 30th stroke. Figure 16 is a graph showing the frequency spectrum of the torque signal of the 40th stroke. As mentioned above, when a certain screw or bolt is tightened by an impact driver, as the number of impacts counted from the sta...

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PUM

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Abstract

A signal processing device (10) for a tool provided with a rotating body which rotates by means of an impact imparted by a drive device is provided with a filter (22), a calculating circuit (23) and acontrol circuit (24). The filter (22) receives a torque value signal indicating a torque value acting on the rotating body, and filters the torque value signal. The calculating circuit (23) sets a filter coefficient of the filter (22) on the basis of the number of impacts imparted to the rotating body. The control circuit (24) controls the impacts imparted to the rotating body on the basis of thetorque value signal that has been filtered by the filter (22).

Description

technical field [0001] The present disclosure relates to a signal processing device used for a tool including a rotating body rotated by an impact applied from a driving device, and a tool including the signal processing device. Background technique [0002] Tools such as impact drivers and impact wrenches are known that include a rotating body that is rotated by an impact applied from a driving device (hereinafter also referred to as “impact rotating tool”). [0003] Patent Document 1 discloses an impact rotary tool in which a hammer body is driven to rotate by a motor, and an impact torque generated by the hammer body is applied to an object to be tightened to generate a tightening torque. [0004] Patent Document 1: Japanese Patent Laid-Open No. 2008-083002 Contents of the invention [0005] The problem to be solved by the invention [0006] Regarding the impact rotary tool, there is an impact rotary tool in which a driving device such as a motor is controlled based ...

Claims

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Application Information

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IPC IPC(8): B25B21/02B25B23/14
CPCB25B21/02B25B23/1475B25B23/1405B25D2250/221
Inventor 丹治佑介田村秀树
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD