Rapid large-torque tightening device and method for narrow long-space blind cavity

Abstract

The invention relates to a rapid large-torque tightening device and method for a blind cavity in a narrow and long space. The device comprises an automatic pushing mechanism and an automatic folding and unfolding tightening mechanism connected with the automatic pushing mechanism, and the automatic pushing mechanism enables a tightening head to be conveyed into or withdrawn from a tightening station, so as to achieve the positioning work before tightening; and the automatic folding and unfolding tightening mechanism is used for folding when the tightening head enters a tightening cavity, torsion transmission during rapid tightening, reciprocating motion during high-torque tightening and switching between the tightening direction and the loosening direction, and rapid tightening and high-torque reciprocating bidirectional composite integrated tightening motion is achieved. The automatic pushing mechanism is driven by a lead screw to do linear motion and is matched with the automatic folding and unfolding tightening mechanism to achieve pushing and folding in a narrow and long space, and the position is adjusted in the nut tightening process.

Description

technical field [0001] The invention belongs to the technical field of assembly of rotating parts, and in particular relates to a fast and high-torque tightening device and a tightening method for blind cavities in narrow and long spaces. Background technique [0002] In industrial applications, bolted connections are ubiquitous, especially in the automotive and aviation industries. According to different connection positions and connection forms, different automatic tightening devices are used to realize the tightening and loosening of bolts. [0003] For the exposed bolt connection, since the tightening operation space is open and the visual effect is good, manual tightening equipment is generally used for tightening, or automatic devices and robot arms are used to operate the tightening machine to realize the tightening action of one or several bolts. For non-exposed bolt connections, especially in complex working conditions such as narrow operating space and dim light, a...

AI Technical Summary

Problems solved by technology

For non-exposed bolt connections, especially in complex working conditions such as narrow operating space and dim light, automatic tightening is limited by the operating environment and cannot be applied; manual tightening is also limited by the environment. Tightening efficiency and accuracy are also greatly limited

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