A multi-axis bolt tightening test bench

Abstract

The invention discloses a multi-shaft bolt tightening test bed which comprises a machine body frame, tightening mechanisms, a top beam mechanism and a working table lifting module. The tightening mechanisms, the top beam mechanism and the working table lifting module are respectively installed on the machine body frame. The tightening mechanisms are installed on diamond-shaped beam frames of the top beam mechanism through a steel wire rope and a spring balancer. The top beam mechanism is installed at the top end of the machine body frame through fixing angle bars. The working table lifting module is installed at the bottom end of the machine body frame through a working table supporting frame. The tightening mechanisms are provided with multiple tightening shafts, and four bolts can be assembled and tightened at the same time. Each tightening shaft is provided with an independent X-direction lead screw and an independent Y-direction lead screw. Through adjustment of the lead screws, the tightening shafts are moved. Through adjustment of positions of the four tightening shafts, the bolts can be distributed in kinds of combination shapes such as a rectangle, a square, a ring form, a regular triangle, a line type and an irregular shape.

Description

technical field [0001] The invention belongs to the field of bolt assembly, and relates to a bolt tightening test bench, in particular to a multi-axis bolt tightening test bench. Background technique [0002] Bolt connection is widely used in various mechanical equipment, and is an important factor affecting technical quality indicators such as equipment safety, economy, and reliability. The bolt assembly and tightening process directly determines the quality of the bolt connection. But for a long time, people have paid more attention to the design and planning of bolted connections, but have paid less attention to the bolted connection tightening process and equipment. Therefore, it often happens that the actual pre-tightening force of the bolt does not meet the design requirements due to improper tightening process, and the design is unreasonable. In recent years, with the continuous development of science and technology, especially the rapid development of aviation and ...

AI Technical Summary

Problems solved by technology

[0003] The current bolt assembly tightening process has the following deficiencies: In the bolt tightening control method, only the torque or rotation angle is used as the standard for tightening, and the same torque or rotation angle will also be obtained for different tightening methods, different materials to be connected, and different bolt specifications. Different pretightening forces, the control accuracy of the pretightening force is not enough; for multi-bolt connections, the planning of the assembly tightening process still mainly depends on human experience, and it is difficult to control and guarantee the assembly quality; there is a lack of accurate control of the bolt tightening process and simultaneous Multi-functional bolt tightening test bench for various specifications of bolts, different bolt arrangements, and different shapes of connected parts

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