Quick Details
Place of Origin: Guangdong, China (Mainland)
Brand Name: Lanejoy
Standard: ISO, GB,DIN,ANSI,ASME,ISO
Material: Stainless Steel
Surface treatment: Zinc Plated Polished/Nickel Plating
Certificate: ISO9001:2015
Size: Customers’Request
Price Terms: FOB,CIF,CRF,EXW and others
Delivery Time: Within 20 workdays after receive payment
Delivery Method: by sea,by air,or by express service
Supply Ability: 10000000 Piece/Pieces per Day
DIN Standard Metal Hollow Nuts Details
DIN Standard Metal Hollow Nuts Application
DIN Standard Metal Hollow Nuts Production Flow
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There are two methods for machining internal and external threads on nut workpieces, including cutting and rolling. The application of the threading principle of the nut can be traced back to the spiral water lifting tool created by Greek scholar Archimedes in 220 BC. In the 4th century AD, the Mediterranean coastal countries started to apply the principle of bolts and nuts on presses for winemaking. At that time, the external thread was wrapped with a rope around a cylindrical bar, and then carved into the mark. The internal thread is often hammered with a softer material wrapped around the external thread.
Around 1500, sketches of thread-processing devices drawn by the Italian Leonardo da Vinci have been used to envisage the use of master screws and exchange gears for machining different pitch threads. Since then, the method of mechanical thread cutting has developed in the European watchmaking industry. In 1760, the British brothers J. Wyatt and W. Wyatt obtained patents for cutting wood screws with specialized devices. In 1778, the British J. Ramsden had made a thread cutting device driven by a worm gear pair, which could produce long threads with high precision. In 1797, the Englishman Mosley laid the basic method of turning thread on the lathe he improved by using the female lead screw and the exchange gear to turn out the different pitch metal threads. In the 1820s, Mosley manufactured the first taps and dies for threading.
At the beginning of the 20th century, the development of the automobile industry further promoted the standardization of threading and the development of various precision and high-efficiency thread processing methods. Various automatic spreading dies and automatic shrinking taps were successively invented, and thread milling began to be applied. In the early 1930s, thread grinding occurred. Although the thread rolling technology was patented at the beginning of the 19th century, it was slow to develop due to mold manufacturing. Until World War II (1942 to 1945), the need for arms production and the development of thread grinding technology were solved. The accuracy of mold manufacturing has only been rapidly developed.