A kind of hob cutter ring forging mold and forging method for shield machine

Abstract

The invention belongs to the field of forging and particularly relates to a hobbing cutter ring forging mold and forging method for a shield tunneling machine. The hobbing cutter ring forging mold and forging method for the shield tunneling machine are applicable to the designing and manufacturing process of the hobbing cutter ring forging mold for the shield tunneling machine. The forging mold comprises an upper mold for forging, a lower mold for forging, guiding and positioning pins, guiding and positioning holes, a hanging lug screw head hole, an upper mold cavity, a lower mold cavity, a parting surface, a flash bin part, a flash bridge part and the like. According to the connection manner of the whole set of mold, after the guiding and positioning holes of the upper mold for forging and the lower mold for forging are aligned, the guiding and positioning pins are inserted in. After the upper mold for forging and the lower mold for forging are closed, the shape of an inner cavity formed by combining the upper mold cavity and the lower mold cavity is the same as the external shape of a forge piece. A mold vice jaw position and an ejecting device are omitted for the forging mold, the structure is simple, and the forging mold can be conveniently obtained in engineering. A forging flow line of the forge piece produced by the adoption of the forging mold and forging method is closed and uniform, the compactness of the forge piece is high, and the structure mechanical property is good.

Description

technical field [0001] The invention belongs to the field of forging, and in particular relates to a forging die and a forging method for a hob cutter ring for a shield machine, which is suitable for the design and manufacturing process of the forging die for a hob cutter ring for a shield machine. Background technique [0002] The hob cutter ring for shield machine is a key part of the shield machine. During the construction process of the shield machine, it bears a load of up to 260-330KN. The hob cutter ring of the shield machine often fails in the form of wear and fracture, and high load Other failure forms caused by the environment will also force the shield machine to stop working. Frequent tool changes will not only delay the construction period, but also increase the cost of shield tunneling. [0003] Traditional hob cutter rings for shield machines are generally produced by rolling rings. Compared with forging forming, the ring rolling method produces a smaller amo...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a forging mold and forging method for hob cutter rings for shield machines, which are used to solve the problems of low metal deformation, poor structure and mechanical properties, and metal flow in the production of traditional shield machine hob cutter rings. Problems such as unclosed lines and uneven distribution

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