The formation of the thread of the industrial large hanging fan bolt

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Author : JU LAI
Update time : 2023-06-16 13:36:38

The formation of threads on bolts in industrial large ceiling fans is essential for the many connection points that require bolts to be fixed. The threads on bolts, big or small, are used to connect with nuts, making threaded connections an extremely common connection method. But have you ever wondered how threads are formed on bolts? What is a thread? A thread is a continuous projection with a specific cross-section formed along a helix on a cylinder or cone surface. Ordinary thread processing is simple, and there are many methods such as lathe, tap, and die tools for processing. When in use, threads are generally classified according to the tooth profile. The so-called tooth profile is the shape of the thread cross-section after being cut by the thread axis. Common tooth profiles include triangles, trapezoids, rectangles, and sawtooth shapes. Generally, threads with a triangular profile are used for connections, such as ordinary threads and pipe threads, while most trapezoidal, rectangular, sawtooth, and other threads are used for transmission.

There are many factors in the production of threads, but the most important ones are the number of threads, diameter, rotation direction, pitch, and lead. The number of threads refers to the threads on the thread's cylindrical surface, which can be single or multiple. If there's only one spiral line forming a thread on the cylindrical surface, it's a single thread. If there are two or more threads, it's called a multiple thread. The pitch represents the distance between adjacent thread teeth on the mid-diameter line, and the lead is the axial distance between adjacent corresponding points on the same helix line. The rotation direction is the direction of rotation when we use it. Screwing in clockwise is a right-handed thread while screwing in counterclockwise is a left-handed thread. The diameter is generally classified as large diameter, medium diameter, and small diameter for comparison during use.

To prevent bolts from loosening, industrial large ceiling fan manufacturers use Loctite screw adhesive for anti-loosening reinforcement. There are also many methods for making bolts with threads, such as mold processing, rolling, screwing, cutting, threading milling, threading grinding, threading honing, tapping, and turning.

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