Screw fastening system and method

A screw fastening and speed technology, applied to screwdrivers, control systems, electrical components, etc., can solve problems such as unstable tightening effect, looseness, and insufficient clamping force

Active Publication Date: 2021-03-23
GOOGOL PARADOX (DONGGUAN) INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned control structure adopts a single control method, and the control is relatively simple. It is not suitable for materials that require high-precision torque in actual engineering and the surface of the tightening screw cannot be impacted.
Torque accuracy is not high, no speed or p

Method used

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  • Screw fastening system and method
  • Screw fastening system and method
  • Screw fastening system and method

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Embodiment Construction

[0073] In order to further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0074] Such as Figure 1 to Figure 5 As shown, a screw fastening system of the present invention includes a speed setting unit, a torque setting unit, a filter unit, a speed torque control unit, a speed torque feedback unit, a current control unit, a speed weighting unit, a torque weighting unit, a motor, a current Detection unit, speed sensor, torque sensor, the speed given unit is used to set the target speed and target acceleration to generate a time-speed curve, and the torque given unit is used to set the target torque and torque acceleration to generate a time-torque curve , the speed weight unit is used to preset the speed weight coefficient, the torque weight unit is used to preset the torque w...

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PUM

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Abstract

The invention discloses a screw fastening system and method. The screw fastening system comprises a speed giving unit, a torque giving unit, a filtering unit, a speed torque control unit, a speed torque feedback unit, a current control unit, a speed weight unit, a torque weight unit, a motor, a current detection unit, a speed sensor, and a torque sensor; an electric wrench is connected to one endof the motor; the input end of the speed sensor, the input end of the torque sensor and the input end of the current detection unit are respectively connected with the motor; the output end of the current detection unit is connected with the current control unit and provides a current feedback value for the current control unit; the speed torque control unit is connected with the current control unit; and the current control unit is connected with the motor. According to the screw fastening system and method, by arranging the speed torque control unit, the speed torque feedback unit and the current control unit, the construction torque of the to-be-fastened screw and the rotating speed of the motor are controlled at the same time, so that the impact torque is reduced, higher torque precision is guaranteed, and the screw tightening effect is effectively improved.

Description

technical field [0001] The invention relates to the technical field of screw locking, in particular to a screw locking system and method. Background technique [0002] The tightening devices currently on the market are electric torque wrench, pneumatic torque wrench, hydraulic torque wrench and manual torque wrench. During the process of tightening screws, these devices mostly use mechanical torque control or open-loop control torque. [0003] The above-mentioned control structure adopts a single control method, and the control is relatively simple. It is not suitable for materials that require high-precision torque in actual engineering and the surface of the tightening screw cannot be impacted. The torque accuracy is not high, and no speed or position control is likely to cause impact torque, resulting in insufficient clamping force of the final screw and unstable tightening effect. For example, when tightening the M1.5 small screws on the back cover of the mobile phone, ...

Claims

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Application Information

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IPC IPC(8): B25B21/00B25B23/147H02P29/40
CPCB25B21/00H02P29/40B25B23/147
Inventor 陈红狄杨江照禹新路
Owner GOOGOL PARADOX (DONGGUAN) INTELLIGENT TECH CO LTD
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