Tightening device

A fastening device and fastening technology, which are used in transportation and packaging, wheel assembly and disassembly equipment, and torque/torsional force measurement during tightening, which can solve problems such as difficulty in confirming the tightening torque and setting torque.

Active Publication Date: 2015-05-06
TONE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, when temporarily loosening the fastened joint parts and tightening them again, further break-in driving is required, and it is difficult to confirm whether the tightening torque has really reached the set torque

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] Hereinafter, an embodiment in which the fastening device 10 of the present invention is applied to a numerically controlled fastening device such as figure 1 as well as figure 2 Tightening is performed as shown, and is composed of a tightener 20 as a main body, a control device 30 for controlling the tightener 20 , and a torque detector 50 for measuring torque. It should be noted that the control device 30 may have a structure in which some or all of its functions are incorporated in the fastener 20 , and may be configured such that a part of the functions of the control device 30 is executed by an external PC or the like.

[0033] In addition, in the following embodiments, as image 3 As shown, the fastening process includes a first fastening process and a second fastening process. The first fastening process is a normal fastening mode, and the second fastening process is to confirm whether the tightening torque is above the set torque. fastening mode.

[0034] fi...

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PUM

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Abstract

A tightening device is able to check that a fastening member has been fastened to a desired set torque or greater after being tightened, without loosening the fastening member. The tightening device is provided with a mode switching switch (44) for switching between a first tightening process of adjusting the output of a motor after measured torque that is measured by a torque detector (50) has reached a preset first control start torque, such that the measured torque reaches a preset first set torque in a phased manner through repeated increases and decreases in torque, and blocking power supply to the motor when the measured torque reaches the first set torque, and a second tightening process of driving the motor at an initial output that is less than in the first tightening process, adjusting the output of the motor after the measured torque that is measured by the torque detector has reached a preset second control start torque, such that the measured torque reaches a preset second set torque in a phased manner through repeated increases and decreases in torque, and blocking power supply to the motor when the measured torque reaches the second set torque.

Description

technical field [0001] The present invention relates to a fastening device capable of fastening coupling members such as bolts and nuts through a plurality of fastening steps. Background technique [0002] There is known a tightener that measures the tightening torque acting on the joint member in order to improve the fastening accuracy of the joint member such as bolts and nuts, and calculates the numerical value so that the tightening is terminated when the measured torque reaches the set torque. Control (for example, refer to Japanese Patent Laid-Open No. 2013-166211). [0003] In addition, tightening may be performed by further applying torque to a fastened coupling member (refer to this publication). [0004] After fastening the coupling member or performing reinforcement, it is required to confirm whether the fastening is actually performed with a torque equal to or greater than a desired set torque. [0005] On the other hand, in the tightening of the wheel nuts of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B23/00
CPCB25B23/00B25B23/147B60B29/006G01L5/24
Inventor 藤本胜弘栉田年彦平井达夫鸟饲幸雄中畑达雄斋藤学渡边政雄
Owner TONE CO LTD
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