Large-scale and high-intensity rivet connection pair and manufacturing method thereof

Abstract

The invention discloses a manufacturing method of a large-scale and high-intensity rivet connection pair. The manufacturing method comprises the followings steps: carrying out temperature heading to a rivet material to form a rivet blank with a rivet head and a rod body; carrying out quenching and tempering heat treatments to the rivet blank in sequence; then processing the rivet blank through finish turning and grinding, so as to form a locking slot pitch diameter region and a pulling slot pitch diameter region on the rod body; carrying out cold rolling to the pitch diameter regions, so as to form a plurality of locking slots not communicated with a ring slot, and a plurality of pulling slots not communicated with the ring slot; finishing a guiding slot; finishing a breakage slot and preparing a rivet; carrying out temperature heading to a rivet sleeve material so as to form a rivet sleeve blank with a hollow revolving body; carrying out normal fire heat treatment to the rivet sleeve blank; finishing the rivet sleeve blank to be a standard rivet sleeve or a flange rivet sleeve; pressing to make a flange so as to make a rivet sleeve. The diameter of the rivet provided by the invention ranges from 30mm to 64mm, the inner diameter of the rivet sleeve is larger than the outer diameter of a rivet locking slot by 0.5mm to 2mm, and the rivet is particularly suitable for large-scale heavy-duty mechanical shock resistance and looseness prevention. The manufacturing method provided by the invention has the advantages that the process is simple, the cost is relatively low, the bearing capability is relatively strong, and shock resistance and looseness prevention are safer and more reliable than that of bolted connection.

Description

technical field [0001] The invention relates to high-strength fastener products for mining machinery and tunnel engineering machinery and a manufacturing method thereof, in particular to a non-removable super-sized high-strength rivet connection pair capable of anti-shock and anti-loosening and a manufacturing method thereof. Background technique [0002] For a long time, mining machinery and tunnel engineering machinery have generally used high-strength bolts to connect the pair to connect the parts. However, because the high-strength bolts are connected by connected threads, the self-locking ability is poor, and it cannot resist earthquakes and loosen under strong vibration and shock working conditions. . [0003] Especially in the 1940s, during the Second World War, the high-strength bolts fastened on the deck of the US aircraft carrier were loosened by the huge impact force when the aircraft landed, which affected safety. [0004] The United States (HUCK) HUCK company d...

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Problems solved by technology

[0008] According to the investigation, the American standard: the maximum nominal size of the rivet is 1 inch (25.4mm); Requirements for anti-seismic and anti-loosening of large machinery

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