Rolling reinforcement device for large outer thread

Abstract

The invention belongs to the technical field of thread reinforcement, and relates to process equipment for machining, in particular to a rolling reinforcement device for a large outer thread. The rolling reinforcement device for the large outer thread is characterized by being provided with an annular rolling body and a rotating body; the annular rolling body is arranged in a rotating body cavity; the rotating body is composed of an upper portion cylinder and a lower portion frustum, the cylinder inner cavity is communicated with the frustum inner cavity, a clamp is arranged at the upper portion of the rotating body, and sliding channels are formed in the wall of the frustum inner cavity; the annular rolling body is provided with rolling wheels, supporting arms, pin shafts, an open ring and sliding bases, the outer wall of the open ring has the taper the same as that of the wall of the frustum inner cavity, the rolling wheels are evenly distributed on the inner side of the open ring through the supporting arms and the pin shafts, the sliding bases are evenly arranged on the outer wall of the open ring, the sliding bases are arranged in the sliding channels and matched with the sliding channels in a sliding mode. The rolling reinforcement device for the large outer thread is reasonable and simple in structure, and a method is advanced and scientific. By means of the rolling reinforcement device for the large outer thread, the extrusion force is larger and more uniform, and the rolling reinforcing effect on the large outer thread is better.

Description

technical field [0001] The invention relates to a machining process equipment, in particular to a large-scale external thread rolling strengthening device, which belongs to the technical field of thread strengthening. Background technique [0002] Threaded connection is an important connection method. Large-scale external threads are widely used in aviation assembly, oil drilling, pipeline connections, etc. The structural characteristics of external threads determine that they have high stress concentration factors. Under high-frequency complex loads The root of the thread is prone to cracks, which eventually lead to fatigue failure. At present, the rolling reinforcement of the traditional thread adopts the method of single-point rolling on the ordinary lathe relying on the force of the spring. The extrusion force generated by this method is difficult to control, and it is easy to cause uneven extrusion force, especially for large external threads. The extrusion force is fa...

AI Technical Summary

Problems solved by technology

At present, the rolling reinforcement of the traditional thread adopts the method of relying on the force of the spring on the ordinary lathe, and the method of single-point rolling. The extrusion force generated by this method is difficult to control, and it is easy to cause uneven extrusion force, especially for large external threads. The extrusion force is far from meeting the requirements of rolling strengthening

The structure of the external thread itself is complex, and the traditional shot peening and laser strengthening processes are not applicable

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