Shaping mechanism for powder metallurgy spacer products

Abstract

The invention discloses a shaping mechanism for powder metallurgy spacer products. The shaping mechanism for the powder metallurgy spacer products comprises an upper punch. An upper punch hanging block is connected to the upper punch. A floating punch is movably connected to the upper punch hanging block and has a degree of freedom of movement relative to the upper punch hanging block. A cushion block used for storing the products to be shaped is arranged below the floating punch. Height check blocks are arranged on the edges of the cushion block and are higher than the cushion block. According to the shaping mechanism, the parallelism of the shaped products depends on the machining precision of the cushion block and the check blocks, the problem that when a mechanical press is used for shaping, the parallelism tolerance of the products cannot be controlled and is instable is solved, and the shaping capacity is greatly improved; the influence of the precision of the press on the parallelism tolerance of the products is eliminated, the requirement for purchasing a high-precision press is avoided, and the cost is reduced; in addition, multiple products to be shaped can be placed on the cushion block during one-time shaping, so that the shaping efficiency is greatly improved, and the defect that a hydraulic machine acts slowly is overcome.

Description

technical field [0001] The invention relates to a shaping mechanism for powder metallurgy products, in particular to a mechanical pressing precision shaping mechanism for gasket-like powder metallurgy products. Background technique [0002] Powder metallurgy is an industrial technology for producing metal powder or using metal powder (or a mixture of metal powder and non-metal powder) as raw material, forming and sintering to produce metal materials, composite materials and various types of products. Powder metallurgy products can improve their dimensional accuracy and parallelism through the shaping process. However, for gasket-type powder metallurgy products with small thickness, due to the small aspect ratio, uneven density in each area during pressing and forming is likely to cause inconsistent springback in the thickness direction, resulting in parallelism tolerance, and its sintering deformation is large. The parallelism tolerance of the product is further increased. ...

AI Technical Summary

Problems solved by technology

For products with little difference in aspect ratio, the parallelism can be better corrected by a certain amount of height reduction, but for gasket products with large outer diameter and thinner products (<3mm), due to springback , the parallelism is difficult to correct

[0004] The mechanical press shaping is to realize the pressing action through the crank-link mechanism, and there is no pressure-holding action at the bottom dead center of the pressing; and the small-tonnage mechanical press has a small pressure and cannot provide a large holding pressure; , the equipment efficiency is very low

Images