The rolling of the pipe drawing machine is a technological method in which some blanks of gold materials are rolled by rolling tools with certain truncated shapes and are geographically deformed to form corresponding truncated pieces.

It can be seen that the hydraulic thread is a chipless addition method. The essence of the thread rolling machine is to use the plasticity of certain materials in the cold state to add the plastic, so that the blank is plastically deformed under the action of the pressure of the rolling limit tool , Rolling creates corresponding threads. In the process of hydraulic thread, the actual thread is the result of the redistribution of the blank metal extruded by the working thread of the rolling tool.

The process of realizing the thread rolling in cold state began in 1831. Earlier, the thread control machine was used to rub the moth bolts used to fasten the railway sleepers. However, it was not widely used for rolling precision threads until 1940. This is mainly due to the fact that in the late 19th and early 20th centuries, the blank material was not suitable for rolling. With the further improvement of the mechanical properties of the blank material, and the successful development of precision hydraulic tools and threading machine tools with higher process performance, the rolling processing technology of the thread rolling machine thread has been more popularized, and the wind can be used in sodium carbon , Alloy steel (including stainless steel, tool steel>, bronze, brass, aluminum, put, drill, nickel, powder metallurgy and plastics, etc. on different blank materials, for various types of parts (such as taps, engine anchor bolts and Power moth bolts, main shaft and screw threads, hollow thin-walled components, etc.) are used for rolling processing of various threads (including precision threads).