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Reaming Bit is still used in the coal industry. Because it requires a lot of excavation and exploration, the requirements for drill pipes are high. Today, the editor will tell you what is the working principle and stress analysis of grooved drill pipe?

Grooved drill pipe is a spiral transport groove set on the surface layer of the drill pipe. Under the precondition that it is determined that it does not interfere with the application of the gripper under normal conditions and does not add the driving force of the drilling machine, the smaller strength of the drill pipe is kept unchanged. , Add a basic screw transport function to the drill pipe, that is, the basic function of drilling holes. When coal blasting or hole blockage occurs, and the hydraulic powder discharge safety channel blocks the coal ash and cannot be discharged, the spiral chute makes the coal ash on the surface layer of the drill pipe flow during the rotation of the drill pipe, and it is discharged and collapsed. The coal ash formed by the hole in turn transforms the slagging function of the drill pipe from fluid slagging to fluid and mechanical equipment coordinating slagging, which reasonably and effectively solves the stuck condition of drilling blockage.

According to the design characteristics of the production process of Extension Drilling Tools, the production process is to do the production and processing of double spiral grooves on the surface layer of the shiny drill pipe. The design concept rate and cost savings are well added, and the mathematical model is used to do the numerical calculation method estimation. The boundary condition is a fixed position on the left side and a rotating torque N=1000N m on the right end. This torque value is the drill pipe of this model specification. Common drilling rigs are under normal conditions when drilling in with the drilling torque.