Production process for main shaft of universal rotary fair-leader

Abstract

The invention discloses a production process for a main shaft of a universal rotary fair-leader. The production process is divided into two steps of fired mold precision casting and numerical control machining, namely semi-finished products are firstly produced by virtue of fired mold precision casting; the external parts of the semi-finished products are in a cylindrical shape; the internal parts of the semi-finished precuts are provided with two cavities which meet the requirements of finished products; and the external parts of the semi-finished products are further finely machined by virtue of a numerical control machine tool and a numerical control grinder, so as to form two parts with different diameters and finish production of the finished precuts. Compared with the prior art, according to the production process for the main shaft of the universal rotary fair-leader, which is disclosed by the invention, machining of inner holes of the main shaft is firstly finished by virtue of fired mold precision casting, so that the problem that the inner holes of the main shaft are difficult to machine is solved; the processing time can be shortened; the product quality can be improved; abrasion of a tool can also be reduced; and the cost of the tool is reduced. The external shape of the main shaft is relatively simple, so that the external shape is not molded by virtue of casting, and is further molded by virtue of the numerical control machine tool and the numerical control grinder in a finish machining manner.

Description

technical field [0001] The invention relates to the field of cable fairleads, in particular to a production process for a main shaft of a universally rotating cable fairlead. Background technique [0002] Such as figure 1 As shown, the main shaft of the universal rotary fairlead includes two parts with different diameters. There are two cavities with different shapes in the main shaft. The first cavity is a tapered channel with a trapezoidal longitudinal section. Each cavity is a cylindrical channel with a circular cross section. It can be seen from the above description that, unlike the general main shaft, the main shaft of the universal rotary fairlead has a complicated structure, especially the internal structure. [0003] In the prior art, the processing method of the main shaft of the universal rotary fairlead is mostly material removal processing, that is, using various lathes for mechanical processing. Due to the relatively complicated internal structure, the proces...

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Problems solved by technology

It can be seen from the above description that, unlike the general main shaft, the main shaft of the universal rotary fairlead has a complicated structure, especially the internal structure.

[0003] In the prior art, the processing method of the main shaft of the universal rotary fairlead is mostly material removal processing, that is, using various lathes for mechanical processing. Due to the relatively complicated internal structure, the processing is very difficult, and it is difficult for the cutting tool. At the same time, the spindle has very high requirements on size and mechanical strength, and the lathe processing method is prone to dimensional deviations. Moreover, it is easy to cause local cracks during drilling, which reduces the mechanical strength of the spindle, resulting in poor quality of the spindle. Stablize

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