The improved structure of mold components that greatly improves the casting precision of lightweight aluminum pistons

Abstract

The invention relates to an improved structure of a mold assembly for greatly improving the casting precision of lightweight aluminum pistons, which is applied to mass production of high-precision lightweight aluminum pistons. It includes outer mold, pin hole mold, slider mold and core mold. The mandrel includes a piston mandrel centerpiece. The central part of the piston mandrel consists of a quadrangular pyramid column and a supporting platform connected with the quadrangular pyramid column. It is characterized in that the support rail opens the groove along the center line, the bottom of the pin hole mold has a straight rod, the straight rod is as wide as the through groove and extends into the through groove; the upper part of the pin hole mold has a T-shaped guide rail groove, and the upper part of the outer mold cavity With T-shaped guide rail, the T-shaped guide rail groove is set on the T-shaped guide rail. The pin hole die has a lower pressing block for the pin hole. The quadrangular pyramid column and the supporting platform are fastened and connected by bolts with chord sections. The end face hole of the bolt is connected with the side hole of the bolt, and a deep hole of the square pyramid column is opened on the lower end surface of the square pyramid column. It has the advantages of avoiding various abnormal wear and tear of the pin hole mold, greatly enhancing the anti-turbulence performance, and improving the precision of the thickness of the radial casting involved in the slider mold during production.

Description

technical field [0001] The invention relates to an improved structure of a mold assembly for greatly improving the casting precision of lightweight aluminum pistons, which is applied to mass production of high-precision lightweight aluminum pistons. Background technique [0002] The lightweight aluminum piston is an aluminum piston with three axial dimples on the outer side of the pin hole seat near the top. The lightweight aluminum piston is generally cylindrical, with a solid top and a cavity in the middle and lower parts. The pin hole traverses the middle part both side walls, and the hole on the side wall is the pin hole. The pin shaft is inserted into the pin holes on the two side walls, and the pin holes on the two side walls support the force exerted by the two ends of the pin shaft. Therefore, the side wall near the pin hole is designed to be thickened, and the thickened entity with the pin hole is also called the pin hole seat. The lightweight aluminum piston has...

AI Technical Summary

Problems solved by technology

[0016] The present invention will provide an improved mold assembly structure that greatly improves the casting precision of lightweight aluminum pistons. Its purpose is to improve the wear condition of the slider mold, solve the problems that the slider mold is not pushed in place, and the casting size is unstable (short stability period) ; It is to improve the manufacturing precision of the track groove of the center piece of the piston mandrel, thereby improving the casting precision of the piston skirt; the present invention will also improve the problem of poor water cooling of the mandrel at the same time, and produce a direct water cooling of the center piece of the piston mandrel. system, improving the casting accuracy determined by the water cooling effect as a whole

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