Die forging blade profile self-adaptive compensation machining method based on process model

Abstract

The invention discloses a die forging blade profile self-adaptive compensation machining method based on a process model. The die forging blade profile self-adaptive compensation machining method is characterized in that a set of automatic and efficient part machining compensation method is established by extracting a measuring point set of a three-coordinate measuring machine and integrating a judgment model, a denoising point model and a compensation model on the basis of a digital production line; the problems of low efficiency and inconsistent standards caused by a traditional repeated iteration machining method of manually constructing a process model depending on experience are avoided; the problems that a machining numerical control machine tool and detection three coordinates are isolated from each other, tools need to be replaced for part machining and detection, and a measurement conclusion contains manufacturing and clamping errors of a second set of tools are solved; and the problems of low consistency, low efficiency, poor precision and easiness in burning caused by manual polishing for eliminating a large numerical value of an outline are solved.

Description

technical field [0001] The invention belongs to the technical field of blade manufacturing, and in particular relates to a process model-based self-adaptive compensation processing method for die forging blade profile. Background technique [0002] At present, the processing method of domestic aero-engine die forging blades is mainly formed by multiple milling processes on the basis of blanks. However, due to the influence of cutting force, cutting heat and other factors, the blade will inevitably produce elastic and plastic deformation, resulting in a large value of local or overall profile after milling. [0003] The traditional method to solve this kind of problems has the following disadvantages: 1) In terms of programming, technicians read the blade detection conclusions, rely on experience to manually construct process models and iteratively process, which has the characteristics of low efficiency and inconsistent standards; 2) In terms of equipment, CNC machining The...

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Problems solved by technology

However, due to the impact of cutting force, cutting heat and other factors on the blade, it will inevitably produce elastic and plastic deformation, resulting in a large value of local or overall profile after milling

[0003] The traditional method to solve this kind of problems has the following disadvantages: 1) In terms of programming, technicians read the blade detection conclusions, rely on experience to manually construct process models and iteratively process, which has the characteristics of low efficiency and inconsistent standards; 2) In terms of equipment, CNC machining The three coordinates of the machine tool and the detection are isolated from each other, and the tooling needs to be replaced for the processing and testing of the parts. The measurement conclusion includes the manufacturing and clamping errors of the second set of tooling; 3) In terms of quality, the manual polishing method is used to eliminate the large value of the contour, and there is a consistent Low performance, low efficiency, poor precision, easy to burn and other problems

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