Method and mechanism for the indirect coupling torque control

A torque control, indirect technology, used in power tools, manufacturing tools, wrenches, etc., can solve the problem of not being able to respond to the locking torque in time

Inactive Publication Date: 2014-04-09
CHINA PNEUMATIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The individual pulse signal cannot reflect the locking torque of the locked part in time, so the impact power wrench cannot control the torque of the locked part in a timely, effective and precise manner.

Method used

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  • Method and mechanism for the indirect coupling torque control
  • Method and mechanism for the indirect coupling torque control
  • Method and mechanism for the indirect coupling torque control

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Embodiment Construction

[0040] In order to further understand the features and technical contents of the present invention, please refer to the following detailed description and accompanying drawings of the present invention. However, the accompanying drawings are provided for reference and illustration only, and are not intended to limit the present invention.

[0041] see figure 2 and image 3 , are respectively an exploded perspective view and a schematic cross-sectional view of the first embodiment of the torque control mechanism of the present invention. The present invention provides an indirect coupling torque control method and its mechanism. The torque control mechanism 1 is a screw mechanism for interlocking with a rotary percussion mechanism 2. The rotary percussion mechanism 2 is driven by a motor 3 (eg image 3 ) is driven to move, and then drives a front-end drive shaft 20 to rotate; since this part can be the basic structure of a general traditional impact power tool, it will not b...

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Abstract

A method and mechanism of the indirect coupling torque control provides a rotary impact mechanism driving a rotary drive mechanism linked between the rotary impact mechanism and a fastener member, when the rotary impact mechanism rotates the fastener member. The rotary drive mechanism can accumulate a rotation stress generated by the rotary impact mechanism to rotate the fastener member. When the rotation stress accumulated in the rotary drive mechanism is larger than the torque value applied to the fastener member, a linear relation between a sensed signal measured from the stress accumulated in the rotary drive mechanism and the torque value applied to the fastener member is provided. Whereby the linear relation is used to control the torque valued applied to the fastener member when the rotary impact mechanism is rotating.

Description

technical field [0001] The invention relates to a power locking tool, especially suitable for a pulse type or impact type power wrench with a rotary percussion mechanism, which can be used as an indirect coupling torque control method for controlling the torque provided to the locked parts and its institutions. Background technique [0002] Compared with hydraulic pulse wrench, servo electric wrench or ratchet wrench, power impact wrench can more effectively and quickly convert input energy (such as air pressure, oil pressure or current, etc.) into locking or loosening torque . Relatively, with the same torsion capacity, the impact type power wrench has the smallest volume. In addition, another advantage of the impact power wrench is that because of the instantaneous hammering method, there is no need to use the reaction arm (Reaction Arm / Bar) to apply reverse force during the process of locking or loosening. The torque to be locked is very convenient for tightening or lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B23/14B25B21/02
CPCB25B21/02B25B23/1405B25B19/00B25B23/1427
Inventor 朱秀锋蔡明融
Owner CHINA PNEUMATIC CORP
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