I. Introduction
In the field of intelligent robot, the most widely used is the manipulator system. Its strong flow production capacity and accuracy make it widely popular in many fields [1 –3]. In the field of intelligent operation, the advantages of convolutional neural network for image feature processing make it popular in the field of image recognition [4] –[6]. The manufacturing industry has higher and higher requirements for accuracy, which opens an important direction for the application of convolutional neural network in industrial robots [7 –10].