Deformation compensating method of forging die

Abstract

The invention relates to a deformation compensating method of a forging die. The deformation compensating method of the forging die comprises the steps of setting at least two observation identification points on a side face of a die, setting a camera at a preset distance far away from the die, enabling the observation identification points to be located in a shooting range of the camera, and setting a standard ruler within the shooting range of the camera; compounding the die without a load, and using the camera for shooting the observation identification points to obtain initial photos; compounding the die with pressure, maintaining pressure for a preset time, and using the camera for shooting the observation identification points to obtain deformed photos; and entering the initial photos and the deformed photos into a computer, identifying, measuring and calculating a change value of a distance between each two adjacent observation identification points through the computer by comparing with the standard ruler, further obtaining the deformation of the die, and compensating and adding the deformation of the die into extrusion stroke parameters of a forging machine, so that the manufacturing accuracy of a die forging piece can be improved.

Description

technical field [0001] The invention relates to die forging technology, in particular to a method for compensating the deformation of a die during forging. Background technique [0002] For large-scale precision die forgings, such as aviation die forgings, the development trend is large-scale, integrated and precise. The manufacturing precision of forgings may seriously affect the performance of subsequent products. [0003] The mold suitable for large forgings is usually heated to more than 300°C during work. When the mold is subjected to huge clamping pressure after heating up, elastic deformation will inevitably occur, which will lead to deviations in the manufacturing accuracy of the forgings. [0004] In order to improve the above problems, it is necessary to measure the deformation of the mold, but the conventional contact measurement method is difficult for high-temperature molds, and the measurement error is relatively large. Contents of the invention [0005] Th...

AI Technical Summary

Problems solved by technology

The manufacturing accuracy of forgings may seriously affect the performance of subsequent products

[0003] The mold suitable for large forgings is usually heated to more than 300°C during work. When the mold is subjected to huge clamping pressure after heating up, elastic deformation will inevitably occur, which will lead to deviations in the manufacturing accuracy of die forgings

[0004] In order to improve the above problems, it is necessary to measure the deformation of the mold, but the conventional contact measurement method is difficult for high-temperature molds, and the measurement error is large