Machine for threading tube body

Abstract

A pipe-threading machine pertains to the technical field of mechanical processing, comprising a rear chuck, a main spindle box, a front chuck, a horizontal sliding plate, a vertical sliding plate, a tube expander, a pipe block, a knife tool, a motor and a bed piece; the main spindle box is arranged at the left upper part of the bed piece; the main spindle box is arranged on the combining surface, which inclines for 45 degrees at the left part of the bed piece; the rear left part of the bed piece is provided with a motor which drives the main shaft to rotate by a tooth-shaped belt and a gear; the two ends of the main shaft in the main spindle box are respectively provided with the front chuck and the rear chuck; the tube expander is arranged on the beam of the main spindle box; the bed piece is provided with a vertical sliding plate which moves vertically along a guide rail; the two guide rails on the vertical sliding plate are provided with two horizontal sliding plates and the two horizontal sliding plates are respectively provided with knife tools. The device of the pipe-threading machine is rationally designed; the main shaft and the chucks are split structures; the hilt system can synchronously process two knives or four knives; geometric accuracy of the machine tool is better due to a heavy-duty linear guide rail; and reliability of the hydraulic piece, the front chuck and the rear chuck is enhanced.

Description

Technical field: [0001] The invention relates to a special-purpose numerical control machine tool in the field of mechanical processing technology, which is specially used for threading of pipes and casings. The types of thread processed include round buttons, partial trapezoidal buttons and special button types. Background technique: [0002] At present, in the field of mechanical processing technology, some manufacturers use special CNC machine tools produced by companies such as Kolinai for special CNC machine tools that are specially used for pipe and casing threads. The structure of this machine tool combines the integrated structure of the spindle and the chuck. It is complicated, and it is difficult to assemble and maintain. In addition, the number of knives used for simultaneous processing is small. The use of steel guide rails makes the geometric accuracy of the machine tool poor, and maintenance is inconvenient. There are also some problems in the use of hydraulic p...

AI Technical Summary

Problems solved by technology

[0002] At present, in the field of mechanical processing technology, some manufacturers use special CNC machine tools produced by companies such as Kolinai for special CNC machine tools that are specially used for pipe and casing threads. The structure of this machine tool combines the integrated structure of the spindle and the chuck. It is complicated, and it is difficult to assemble and maintain. In addition, the number of knives used for simultaneous processing is small. The use of steel guide rails makes the geometric accuracy of the machine tool poor, and maintenance is inconvenient. There are also some problems in the use of hydraulic parts and front and rear chucks. question

According to the actual test and verification, there is a difference of 12-15% in the qualified rate of pre-centered jaws, especially for hot-rolled pipes.

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