Locomotive oil inlet casing sand core and manufacturing method thereof

Abstract

The invention discloses a locomotive oil inlet casing sand core which is composed of an upper sand core and a lower sand core. The invention also discloses a method for manufacturing the locomotive oil inlet casing sand core. The method comprises the following steps: A. converting a two-dimensional picture file of the locomotive oil inlet casing into a three-dimensional picture file; B. inverting the three-dimensional picture file into an integral-structure sand core picture file; C. carrying out modular cutting on the integral-structure sand core in the picture file obtained in the step B; D. making the section profile data of each sand core module into a distribution picture which can be recognized by a 3D printer; and E. printing the distribution picture through the 3D printer, thereby obtaining the sand core.

Description

technical field [0001] The invention relates to a sand core for casting an oil inlet body of a locomotive and a manufacturing method of the sand core. Background technique [0002] The oil inlet body is one of the important parts in the hydraulic transmission system of the locomotive. There are oil inlet body parts with similar structures in various types of railway locomotives such as GK1C and GK1Cg. Such as figure 1 As shown, the entire oil inlet body structure is bowl-shaped, the intermediate shaft hole runs through the bowl-shaped inner cavity of the casting, and there is a ring of oil inlet passages with a port width of 19-28 mm along the flange of the bowl mouth. The structure is relatively complicated. The traditional sand casting process requires 11 sand core (such as Figure 7 to Figure 9 As shown), the number of sand cores is large. According to the traditional technology, the oil inlet channel of the bowl flange is divided into 4 pieces of sand cores and made se...

AI Technical Summary

Problems solved by technology

If more sand cores are divided in the casting process design, more molds need to be made, and the cost will be higher; if the cost is controlled by reducing the number of molds by reducing the number of sand cores in the case of traditional casting production methods, this will It will inevitably cause a small number of complex sand cores that need to be demolded, and complex sand cores are difficult to produce through a pair of molds, and the demoulding process is basically impossible

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