Method for monitoring machine, device, and storage medium

A machine monitoring device, comprising:

• a communication unit communicating with at least one machine quipped with a fixture for fixing a product, the fixture having at least one fixing hole;
• at least one processor;
• and
• at least one memory storing one or more programs, when executed by the at least one processor, the one or more programs cause the at least one processor to:
• obtain actual coordinate values of the at least one fixing hole in a plurality of machining processes;
• calculate a standard deviation of the actual coordinate values in at least one direction according to the actual coordinate values and a preset standard coordinate value, and calculate a risk index in the at least one direction according to the standard deviation and a preset tolerance, the at least one direction comprising a X-direction and a Y-direction, the standard deviation of the X-direction comprising a standard deviation in an X-axis positive direction and a standard deviation in a X-axis negative direction, the standard deviation of Y-direction comprising a standard deviation in a Y-axis positive direction and a standard deviation in a Y-axis negative direction, wherein the risk index in an X-axis is calculate by [X−,X+]*[GX−,GX+]T, and the risk index in a Y-axis is calculate by [Y−,Y+]*[GY−,GY+]T, X−, X+, Y−, and Y+ are the standard deviations of the X-axis negative direction, the X-axis positive direction, the Y-axis negative direction, and the Y-axis positive direction, respectively;
• and GX−, GX+, GY−, and GY+ are a tolerances of the X-axis negative direction, the X-axis positive direction, the Y-axis negative direction, and the Y-axis positive direction, respectively, wherein the risk index reflects a health score of the at least one machine, the higher the risk index, the worse is the health or performance of the at least one machine;
• determine whether the risk index exceeds a preset threshold;
• and
• send a warning to the machine if the risk exceeds the preset threshold.

A computer readable storage medium having stored thereon instructions that, when executed by at least one processor of a computing device, causes the processor to perform a defect detecting method, the method comprising:

• obtaining actual coordinate values of a fixing hole in a plurality of machining processes;
• calculating a standard deviation of the actual coordinate values in at least one axial direction according to the actual coordinate values and a preset standard coordinate value, and calculating a risk index the in at least one axial direction according to the standard deviation and a preset tolerance, the at least one direction comprising a X-direction and a Y-direction, the standard deviation of the X-direction comprising a standard deviation in a X-axis positive direction and a standard deviation in a X-axis negative direction, the standard deviation of Y-direction comprising a standard deviation in a Y-axis positive direction and a standard deviation in a Y-axis negative direction, wherein the risk index in an X-axis is calculate by [X−,X+]*[GX−,GX+]T, and the risk index in a Y-axis is calculate by [Y−,Y+]*[GY−,GY+]T, X−, X+, Y−, and Y+ are the standard deviations of the X-axis negative direction, the X-axis positive direction, the Y-axis negative direction, and the Y-axis positive direction, respectively;
• and GX−, GX+, GY−, and GY+ are a tolerances of the X-axis negative direction, the X-axis positive direction, the Y-axis negative direction, and the Y-axis positive direction, respectively, wherein the risk index reflects a health score of the at least one machine, the higher the risk index, the worse is the health or performance of the at least one machine;
• determining whether the risk index exceeds a corresponding preset threshold;
• sending a warning to the machine if the risk exceeds the preset threshold.