AUTOMATIC CONTROL OF DEBURRING MODULES IN A MACHINE FOR THE MECHANICAL EDGE PROCESSING OF SHEET METAL BLANKS

This work addresses issues related to controlling the mechanical edge processing of sheet metal blanks, specifically their deburring. The necessity of the deburring operation is due to the low surface quality of sheet material, which leads to both a reduction of finished product quality and additional material and time costs for correcting defects. Therefore, the task of developing an effective control algorithm for deburring modules is highly relevant. An analysis of the time costs of the deburring machine technological process in a real-world production setting has shown that the main costs are associated with deburring sheet material itself. The authors propose a design for a deburring machine and an algorithm for the automatic control of its modules. The developed scheme for taking readings and registering deburring wheel wear allows for the real-time registration of technological process parameters and the correction of the wear process of the abrasive deburring wheel, which is the main element of the deburring module. The authors have established that the total length of the working surface travel of the deburring wheel can be useful to predict wear, and the critical diameter of the deburring wheel can be applicable to limit its maximum usable diameter. Based on this, the work has proven that the control algorithm for the machine deburring module of the sheet metal blank edge cleaning should include a block implementing feedback on the abrasive wheel diameter, ensuring a constant cutting speed. Additionally, predefined parameters for the material removal process, based on the drive current value at a constant cutting speed, allow for ensuring the quality of the deburred sheet surface.