Rolling tool for axial external threads

Abstract

The invention relates to a rolling tool for axial external threads. The rolling tool comprises a base and is characterized in that the base comprises a first component, a second component, a lock nut, a rear cover plate, a thread rolling wheel washer, a thread rolling wheel, a rolling pin, an outer fixing cover plate and an Allen screw. The first component comprises an outer splined shaft, a thread size adjusting cover, an outer splined shaft retainer ring, a volute spring and a reset handle. The second component comprises a transmission large gear, a rolling wheel mounting block, a transmission large gear retainer spring, a connecting rod, an eccentric shaft and a transmission small gear. The outer splined shaft of the first component is nested onto splines of the transmission large gear of the second component. The connecting bar penetrating the rear cover plate is fixedly connected through the lock nut. The outer edge of the eccentric shaft is sequentially sleeved with the thread rolling wheel washer, the rolling pin and the thread rolling wheel. The outer fixing cover plate is fixed to the connecting bar through the Allen screw. The rolling tool has the advantages that high thread strength of threaded connectors can be ensured, the surface of the threaded connectors is smooth, and threaded connectors are high in compression resistance and long in service lives.

Description

technical field [0001] The invention relates to a processing tool for threaded connection joints of automobile air brake pipelines, in particular to an axial external thread rolling tool. Background technique [0002] The existing automobile air brake pipeline connecting joint is a threaded joint, and the quality reliability of the threaded joint directly affects the reliability of the automobile air brake pipeline. If the air leakage caused by the loosening of the threaded joints occurs, serious brake failure may be induced, resulting in major safety accidents. Therefore, the quality of threaded joints is directly related to the safety of the driver. There are two types of threaded joints processed by traditional production processes. One is the cutting process, which can form each key dimension at one time on an ordinary machine tool or a CNC machine tool to ensure product quality. However, the defects and deficiencies are poor thread strength, rough thread surface, wea...

AI Technical Summary

Problems solved by technology

However, the defect and deficiency is that the process of processing the rest of the threaded joint is scattered, and after rolling the thread forming, it needs to go through multiple installations, positioning and clamping to process the cone surface, so that the external thread and the cone surface are not concentric, which directly affects the sealing and reliability.

[0003] To sum up, there are defects in the existing threaded joint manufacturing process and equipment. How to ensure that the processed threaded joint has high thread strength, smooth surface, strong extrusion resistance, long service life, and can be processed during processing? To ensure the concentricity of the external thread and the conical surface without multiple installation and positioning, so as to ensure the reliability of the seal, has become a technical problem that those skilled in the art have long wanted to solve but have not been able to solve.

This has made the technical research on the connection joints of automobile air brake pipelines stagnant for a long time

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