The best solution to loose threaded fasteners
Thread Content
Threaded thread sleeve (wire threaded sleeve) is a new type of threaded fastener. It is a spring-shaped internal and external thread concentric body precisely processed from high-precision diamond-shaped stainless steel wire. Threaded wire sets can meet international standards for high-precision internal threads, and their performance is better than threads formed by tapping. Main applications: 1. High-strength, wear-resistant, and high-precision standard internal threads can be formed on mechanical parts loaded with metal or non-metal materials (such as aluminum, magnesium and other light alloy engineering materials). Typical applications: High-voltage switchgear, hydraulic machinery, welding equipment|, tobacco machinery, microwave communications, auto parts, air separation equipment, coal machinery, power machinery, textile and chemical fiber machinery, etc. 2. When thread machining errors are made or damaged internal screw holes are repaired, threaded thread sleeves (wire thread inserts) can be used as a repair method and can be quickly and effectively repaired. Typical applications: Repair the threaded holes of various important parts after tripping, such as: Repair of threaded holes in injection molding machine templates. 3. Use threaded thread sleeves to convert metric ← → inch threaded holes, which is very convenient and fast. Typical applications: Imported equipment or machinery whose imperial threads need to be changed to metric threads due to spare parts supply issues
I don’t know much about mechanics, so I will learn* . Help me.
The information collected by Fadian is for reference only. Characteristics of threaded wire sleeves (wire threaded sleeves) (1) The diameter of the threaded wire sleeve in the free state is slightly larger than the diameter of the screw hole it is installed into. During assembly, the threaded wire sleeve is torqued by a special wrench to make its diameter smaller, and enters the screw hole that has been tapped with a special tap. After installation, the threaded wire sleeve produces a spring-like expansion effect, making it firmly fixed in the threaded hole. (2) Increase the load-bearing capacity and fatigue strength of threaded connections: The threaded thread sleeve forms an elastic connection between the screw and the internal thread hole in which the threaded thread sleeve is installed, thereby eliminating the screw torque and tooth profile half-angle error between the internal and external threads, and can evenly distribute the load on each thread over a specified length, thereby strengthening the internal thread and reducing vibration, thus improving the fatigue strength of the threaded connection of parts. (3) Wear-resistant: The thread sleeve is precisely wound from extremely hard cold-rolled stainless steel wire. The hardness of the spiral surface can reach HRC43~50. The mirror-like surface (smoothness can reach 0.4~0.2μm) reduces friction and wear, and can reduce the torque generated by friction on the screw by 90%. Thus, the minimum screw tightening torque can be used to obtain the maximum pre-tightening torque and screw tension, prevent the screw from loosening, and keep the screws of various materials in the best use condition. (4) Corrosion resistance: Due to the excellent corrosion resistance of stainless steel thread sleeves, they can ensure their performance in a variety of materials and common environmental conditions. Assemblies using thread sleeves will not stick and rust. (5) Heat resistance: Threaded thread sleeves prevent threaded connections from seizing or galling at high temperatures. (6) Save materials: Compared with ordinary standard internal threads, under the same strength conditions, after using threaded thread sleeves, in order to make best use of the yield limit, screws with smaller size and higher strength can be used, which can save a lot of material, reduce weight and reduce volume. (7) The locking thread sleeve can lock the screw in the threaded hole, preventing the screw from loosening and falling off when subjected to vibration and impact, and has better technological performance than ordinary locking devices. The locking thread sleeve can be disassembled and assembled multiple times without reducing the torque of the thread, and it also has high reusability.
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Didn't know there were so many applications. I have used it before, but because one of the internal threads of the M16 was damaged, I used it to repair the internal thread.
In fact, there are many methods, such as adding spring washers and double nuts, which are more commonly used.