The invention provides a
numerical control machine tool milling
machining multi-process
signal intelligent marking method based on Transform. Firstly, multi-mode
time sequence signals (such as spindle vibration,
cutting force and
acoustic emission signals) are collected, denoising is performed through
wavelet transform, time-
frequency domain features are extracted,
signal samples are classified according to process categories, and a high-quality
training set is constructed by combining specialists to
label the samples. Secondly, designing a multi-
modal feature extraction framework based on a Transform model, introducing a multi-head attention mechanism, dynamically adjusting
modal weights to generate joint feature representation, determining key modals and features through improved multi-
modal feature
sensitivity analysis, and accurately marking signals in combination with a self-
supervised learning and physical constraint optimization model; finally, a sequential mark
verification strategy is adopted, a high-quality mark
data set is generated, and the accuracy and consistency of analysis in the
machining process are improved. The method can be widely applied to
machining quality analysis and intelligent optimization of the
numerical control machine tool for complex precise parts, and has high efficiency and reliability.