Application of Grinding Elimination/Anti-collision System发表时间:2021-02-24 19:09 Add Jilanding Intelligent Technology Co., Ltd. on the bearing groove grinderlost flight/Anti-collisionsystem, improvedGrinding efficiency12%, reduced grinding wheel collisionSuch as the loss of abnormal conditions, effectively improving the consistency of product quality. At the same time, the grinding power data collected by the elimination of space travel/anti-collision makes the grinding process digital, which can be further applied in the aspects of grinding process optimization and fault diagnosis. 1. Project background In the process of bearing groove grinding, the following problems will be caused by the difference in the size of the incoming material of the product blank: 1) efficiency waste. The allowance of the workpiece to be processed varies greatly. In order to ensure that the grinding wheel does not collide with the workpiece during the fast-forwarding stage, it is necessary to convert the fast-forwarding speed of the grinding wheel into a normal grinding speed at a safe position, so there is a period of beat waste. Generally, the beat waste caused by the change of the blank allowance is more than 10%. 2) wheel collision. Due to the abnormal material, the abnormal part will collide violently with the grinding wheel during the fast-forward stage, causing damage to the grinding wheel, spindle and fixture. 3) poor quality consistency. The consistency of quality of the product cannot be fully guaranteed. 2. Solution: Glanding Intelligent Technology Co., Ltd. is installed on the grinding machine to collect the spindle power signal, automatically sense the contact moment between the grinding wheel and the workpiece, and prompt the machine tool to switch the moving speed, so that the grinding efficiency is greatly improved. At the same time, when there is a grinding abnormality, a signal is sent to the machine tool to stop in time to reduce the abnormal loss. 3. On-site verification: The on-site operation scene is the grinding of deep groove ball bearings. It is difficult to guarantee the uniformity of sizes due to different batches of incoming materials and suppliers. In addition, the bearing blanks are ground after heat treatment. After heat treatment, the groove ring will be deformed, which will also cause blank margins to vary. Therefore, in order to ensure quality during grinding, the process equipment will be kept conservative and efficiency will be lost. However, abnormal blanks may collide with the machine, causing equipment failure and machine tool damage. Since the bearing production is an automatic production line, there will also be slight collision problems that lead to the appearance of defective products in batches. The load of the spindle is collected for monitoring, and different threshold triggers are set according to the change of the load value, so as to realize the automatic transformation of the grinding speed. The anti-collision signal is scanned during the fast-forward and fast-trend phases. When the real-time power exceeds the anti-collision threshold (limit power), an anti-collision signal is sent to the machine tool, and the machine tool resets and sends out an abnormal alarm signal. Fourth, the actual effect: 1) Efficiency improvement.The original actual processing time was 21.29s, but after using the "gap elimination/anti-collision system", the cycle time was reduced to 18.71s, saving 2.58s and improving efficiency12%。 2) for collision protection.By selecting abnormal workpieces and modifying parameters, the grinding is collided. The anti-gap/anti-collision system shuts down and alarms in time to avoid further losses. V. Summary By adding Gelandine's void travel/anti-collision system to the grinding machine, the grinding efficiency is greatly improved, and at the same time, the risk of grinding collision is effectively reduced, and the processing consistency of the product is better. At the same time, the grinding power data collected by the elimination of space travel/anti-collision makes the grinding process digital, which can be further applied in the aspects of grinding process optimization and fault diagnosis. |