Detection method and device for number of impact times of impact type fastening tool

A technology for fastening tools and detection devices, applied to measuring devices, manufacturing tools, measuring electrical variables, etc., to achieve cost reduction, low power consumption, and light weight

Active Publication Date: 2016-08-03
郑州时享电子技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the deficiencies of the existing universal impact fastening tools, the present invention proposes a detection device and detection method for the number of impacts applicable to various power source impact fastening tools

Method used

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  • Detection method and device for number of impact times of impact type fastening tool
  • Detection method and device for number of impact times of impact type fastening tool
  • Detection method and device for number of impact times of impact type fastening tool

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Experimental program
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Effect test

Embodiment 1

[0038] see Figure 1 to Figure 5 , the impact detection method of the impact fastening tool of the present invention, the realization method is as follows:

[0039] The acceleration sensor is installed on the vibration-sensitive part of the impact fastening tool frame to detect the vibration signal sensed by the acceleration sensor during the working process; through the analog signal conditioning link, the acceleration sensor senses various interference components and the amplitude is positive to the impact intensity The relevant vibration waveform signals are filtered and amplified, and the obtained vibration waveform signals are converted into digital waveform signals through the A / D converter in the digital signal acquisition and processing link, and the vibration waveform frequency and continuity of the digital waveform signals are judged in real time. Remove redundant interference pulses to form complete pulse wave data, obtain real-time pulse numbers, and output shock n...

Embodiment 2

[0041] see Figure 5 , Figure 6 , Figure 7 , Figure 8 , the impact number detection method of the impact fastening tool in this embodiment is different from Embodiment 1 in that it further discloses the specific implementation steps for the digital signal acquisition and processing link to process the vibration waveform signal in real time and output the impact number signal:

[0042] 1) Storage step—store the frequency m of the shock pulse wave in the data storage unit 上限 、m 下限 and the amplitude characteristic parameter k of the pulse wave, which are used to filter out the interference pulse in real time in the digital signal acquisition and processing link;

[0043] 2) Reading step—read the signal output mode of the number of impacts from the selection switch, determine the type of output signal and the number of simultaneous output channels, and set the initial value of the number of impacts at the same time;

[0044] 3) Acquisition step—convert the vibration analog...

Embodiment 3

[0048] see figure 1 , figure 2 , the present embodiment is an impact frequency detection device for realizing the impact frequency detection method as described above, including a metal or engineering plastic shell 1 and an impact frequency detection processing circuit arranged inside the shell 1, and the impact frequency detection processing circuit The output impact frequency signal is connected to the universal torque controller through the signal cable 2, so as to realize the accurate controllability of the output torque of the impact wrench. The impact frequency detection and processing circuit includes an acceleration sensor, an analog signal conditioning link, a digital signal acquisition and processing link and a signal output Interface; the output vibration waveform signal of the acceleration sensor is connected to the analog signal conditioning link, and the analog signal conditioning link filters and amplifies the input vibration waveform signal, and then accesses ...

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Abstract

The invention relates to a detection method for the number of impact times for torque control over an impact type fastening tool. According to the detection method for the number of the impact times of the impact type fastening tool, an acceleration sensor is installed in a vibration sensitive position of the impact type fastening tool, vibration waveform signals which contain various interference elements in the working process and sensed by the acceleration sensor are detected and subjected to filtering and amplifying treatment; and the treated vibration waveform signals are sent to a digital signal acquisition and processing link through an A/D converter to be subjected to vibration waveform frequency and continuity real-time distinguishing, redundant interference pulses are removed, complete pulse wave data are formed, the real-time number of pulses is obtained, and a signal of the number of the impact times corresponding to the number of the pulses is output. According to a detection device for the number of the impact times for achieving the detection method for the number of the impact times, a number of times of impact detection and processing circuit is arranged in a metal shell or an engineering plastic shell, a signal of the number of times of impact output by the number of times of impact detection and processing circuit is connected with a universal torque controller through a signal cable, and the output torque of an impact wrench can be controlled precisely.

Description

technical field [0001] The invention relates to a fastening torque control method of an impact fastening tool, in particular to a method and device for detecting impact times of an impact fastening tool. Background technique [0002] As we all know, bolted connection is the most commonly used connection method at present. Impact fastening tools are the most commonly used fastening tools for fastening such as bolts or nuts. Impact tightening tools tighten a bolt or nut by applying pulsating torque to the spindle to rotate a socket at the end of the spindle. [0003] The current impact fastening tools are classified into motorized wrenches, pneumatic wrenches and electric wrenches according to the power source. But the working principle of its fastening bolt or nut is basically the same. Its working principle is: the output shaft of the power machine drives the afterburner shaft after deceleration, drives the energy storage impact body through the steel ball and the spiral ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B23/14G01R29/00
CPCB25B23/1405G01R29/00
Inventor 刘明王留军任浩宇
Owner 郑州时享电子技术有限公司
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