System and method for determining the characteristics of a machining process

A system for determining one or more characteristics of a hole machined in at least one workpiece by a machining process, the system comprising:

• a memory configured to store depth data comprising a variation of a depth of the hole with respect to time, tool velocity data comprising a variation of a tool velocity of a tool performing the machining process with respect to time, process current data comprising a variation of an average process current generated during the machining process with respect to time, and a plurality of gates, wherein each of the plurality of gates detects a respective phase in the machining process, and wherein each gate comprises a beginning and an end with respect to time;
• and
• a processor communicably coupled to the memory and configured to:
• obtain the depth data, the tool velocity data, and the process current data;
• determine a plurality of first key points for the depth data, the tool velocity data, and the process current data, wherein each of the plurality of first key points corresponds to a respective key event in the respective depth data, the respective tool velocity data, or the respective process current data;
• determine a plurality of second key points, wherein each of the plurality of second key points characterize the beginning or the end of a respective gate from the plurality of gates;
• determine a plurality of third key points, each of the plurality of third key points formed by an intersection between a respective gate from the plurality of gates and the respective depth data, the tool velocity data, or the process current data, wherein the plurality of first key points, the plurality of second key points, and the plurality of third key points together form a plurality of key points corresponding to the machining process;
• obtain a plurality of rules associated with the plurality of key points, wherein each of the plurality of rules comprises one of:
• a relationship between a respective key point from the plurality of key points and a value associated with the respective key point;
• and
• a relationship between two or more respective key points from the plurality of key points;
• and
• determine the one or more characteristics of the hole based on the plurality of rules and the plurality of key points.