Method for automatically identifying and monitoring on-line machined workpieces of numerical control machine tool

Abstract

The invention discloses a method for automatically identifying and machining and monitoring on-line machined workpieces of a numerical control machine tool, which comprises the steps that: firstly, the possible spindle machining power information when different on-line workpieces are machined is subjected to the processes of the selection of machining feature vectors, the formation of a feature template sequence, time warping, the calculation of matching distance, the clustering of the distance and the like to form a multi-workpiece characteristic template base; when the workpeices are machined, the acquired workpiece real-time machining power information is processed to form a feature vector sequence; the sequence is subjected to processing of the time warping, the calculation of the matching distance and the like with templates in the characteristic template base; and the type of the machined workpieces can be judged and the machining number is accumulated or the machining parameters of the machining process are monitored according to the matching distance and a set threshold value.

Description

technical field [0001] The invention relates to the technical fields of machinery manufacturing and information processing, belongs to information collection and signal processing methods in a manufacturing execution system, and specifically relates to an automatic identification and processing process monitoring method for online processing workpieces on a numerically controlled machine tool. Background technique [0002] Workpiece processing progress information and process monitoring in machining workshops is one of the important information to support workshop production process management and optimal operation. Processing progress information and process monitoring include a lot of content, the most basic of which is the workpiece information being processed, the quantity that has been processed, and whether the processing process is processed according to the technical parameters of the process. [0003] At present, in some workshops with a high degree of automation, b...

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to solve the problem that the processing progress information of the workpieces in the workshop mainly relies on manual statistics, and statistical errors often occur during mixed processing, and it is wasteful for workers to change processing parameters without authorization to speed up the processing progress. Propose an automatic identification and monitoring method for online machining workpieces of CNC machine tools based on dynamic time bending and power information

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