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[CN 201911196374.4] A Design Method of Multi-directional Top Forging Stock Based on Flat Forging Machine
[CN 201911196374.4] A Multi-directional Top Forging Blank Design Method Based on Flat Forging Machine Title: A Multi-directional Top Forging Blank Design Method Based on Flat Forging Machine Application Number: CN 201911196374.4 Applicant: China Aviation Development Shenyang Liming Aeroengine Co., Ltd. Application Date: 2019-11-29 Patent Type: Invention Application The present invention relates to the field of blade die forging blanks, in particular to a multi-directional top blank design method based on flat forging machine. The flat forging machine has two mutually perpendicular forging directions: the main forging direction is horizontal and the secondary forging direction is vertical. The bar with a diameter between the dumbbell-shaped blank head diameter and the rod diameter is selected. In the first step of the flat forging machine, the middle part of the bar is first flattened by the secondary forging direction, and one end of the bar is upset by the main forging direction. In the second step, the middle part of the bar is flattened again by the secondary forging direction, the other end of the bar stock is upset again in the main forging direction. The invention utilizes the characteristics that the flat forging machine has two mutually perpendicular forging directions. In one stroke, the middle part of the bar material and the end part of the upsetting bar material are respectively flattened from two different directions, and the two parts of the forging deformation are not related. Thinning and thickening are carried out respectively, so that the deformation distribution of the top forging blank during die forging is consistent with that of the dumbbell blank.
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