One-time molding machine for integral drill pipe

Abstract

The invention relates to the technical field of drill rods of electric rock drills, in-the-hole drills, excavation-free drills, oil drilling machines and the like, in particular to an integral drill rod one-time forming machine. The integral drill rod one-time forming machine adopts one steel pipe, the two ends of the steel pipe are subjected to hot upsetting simultaneously to form thread, insertion cube or flange shaped equipment. According to the drill rod one-time forming machine, through a method of carrying out heating and upsetting simultaneously on the two ends of the steel pipe, the processing and quenching of thread, insertion cube or stop-buckle shapes and the like at the two ends of the steel pipe are completed at one time; the requirements on one-time processing and forming of the steel pipe for the drill rod of which the diameter is within 15-800mm and the length is 300-30,000mm can be met; a technology is simple; the one-time forming can be realized simply by lightly clamping the steel pipe in the middle and carrying out hot upsetting on the two ends of the steel pipe at the same time; the integral drill rod one-time forming machine saves labor, materials and time, is low in cost, light in weight, long in service life and good in economy; and the two ends of the steel pipe are oppositely extruded during the upsetting, so that reverse forces are offset mutually, and the problem that the steel pipe is clamped is solved.

Description

technical field [0001] The patent of the invention relates to the technical field of drill pipes for rock electric drills, down-the-hole drilling rigs, excavation-free drilling rigs, oil drilling rigs, and other drilling rigs, and is specifically a one-time forming machine for integral drill pipes. Background technique [0002] In the process of processing drill pipes, since the two ends of the drill pipes need to be threaded or squared to connect the drill pipes, and the middle needs to be watered or ventilated, a section of steel pipe is usually used in the middle and round steel is used at both ends to process Threads or inserts are used to connect drill pipes to drill pipes, and then welded together to form a drill pipe. [0003] Existing method is that two ends are processed into screw thread or inserting square, milling and flattening square, turning and buckle, drilling through hole with round steel at both ends, and then welded on the steel pipe of middle section. H...

AI Technical Summary

Problems solved by technology

However, this processing method has complex procedures, large amount of materials, poor concentricity after welding, easy swing, easy breakage of welding parts, too heavy weight, unstable quality, small output, and high processing cost.

[0004] There is also a method of upsetting at one end, which can only be forged into a rough shape, and it needs at least two or more times to be upset and forged, and it needs to be threaded, milled and flattened. It is easy to slip, the card is tight, and the deformation of the steel pipe causes marks. The existing clamping method can only be clamped, and the shape cannot be guaranteed. After upsetting, it needs to be threaded and flattened.

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