Split type die for press machine, manufacturing method and forging cutting teeth thereof

Abstract

The invention discloses a split type mould used for a press, a manufacturing method and a forging bucket tooth thereof, which utilizes the split type mould to solve the technical problem of demoulding. The adopted mould is divided into an upper separated body and a lower separated body, the upper separated body consists of a punch head upper cover and a punch head embedded at the lower end of the punch head upper cover; the lower separated body is formed by that an outer sleeve is fixedly connected on a backing plate and internally installed with a tube mold of the separated body, and a disconnecting square sleeve is installed at the upper part inside the tube mold; and an ejector rod is installed in the central hole of the backing plate. The manufacturing method comprises the following steps: the punch head is utilized for hammering the blank so as to carry out foring compression in the tube mold, the punch head moves upwards when the press returns to the original position, the disconnecting square sleeve prevents the forging bucket tooth form moving so as to disconnect the punch head and the forging bucket tooth, the ejector rod ejects the forging bucket tooth and the tube mold of the separated body upwards, the tube mold is divided into two blocks along the outer sleeve, and the forging bucket tooth carries out demoulding automatically. The invention solves the problem of the automatic demoulding of the bucket tooth by foring compression; the mechanical property and the wear-resisting property of the forging bucket tooth are improved by more than 30 percent compared with that of a casting bucket tooth, especially when being used in severe conditions such as mines and the like, the forging bucket tooth has more superior performances.

Description

technical field

[0001] The invention relates to a special forging bucket tooth, a manufacturing method and a mold, in particular to a split mold for a press, a manufacturing method and a forging bucket tooth. Background technique

[0002] Bucket teeth are mainly used in construction machinery such as excavators. There are performance requirements for bucket teeth such as strength, toughness, hardness, and wear resistance, as well as internal organization requirements such as no air bubbles, shrinkage cavities, looseness, and sand holes, etc., and size and shape. The above requirements are related to the installation performance and service life of bucket teeth. Therefore, in terms of material selection, physical and chemical performance indicators should be met, and in terms of manufacturing methods, appropriate processing techniques should also be selected. The bucket teeth used in large quantities are usually manufactured by sand casting method. The mechanical properties ...

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