Vertical machining center is a kind of CNC machine tool with a tool library and can automatically complete the tool changing, which makes it can complete all kinds of complex shape, multi-process parts processing, automatic tool changing system is an important part of vertical machining center. Its working stability can directly affect the working efficiency of vertical machining center. So in order to reduce the failure rate of the tool changing system and give full play to the advantages of the vertical machining center, the following Kunshan Duyang CNC share the fault and solution of the tool changing system of the vertical machining center for you. 1. If the internal seal of the loose tool cylinder (oil cylinder, gas-hydraulic pressurizing cylinder, lever mechanism, etc.) is damaged, the cylinder thrust is insufficient, and the spring force of the tie rod disc spring cannot be overcome, then the tool cannot be loosened and the manipulator cannot pull out the tool from the spindle. At this time, it is necessary to replace the seal or exhaust and refuel the gas-liquid booster cylinder. 2. If the disc spring on the tie rod breaks, the spindle will not be able to grip the knife. This is to replace the tie rod or disc spring to eliminate this fault. 3. If the tie rod is bent and deformed, there will be noise and vibration when the spindle is rotating at high speed, so it is necessary to replace or straighten the tie rod. 4. If the broken disc spring on the tie rod is stuck in the inner control of the spindle, the cylinder piston rod cannot operate. At this time, the tool can neither be loosened from the spindle nor installed on the spindle, so the disc spring fragments need to be cleaned up to solve the problem. 5. The number of plates installed on the disc spring and the improper adjustment of the position of the lock nut will cause the cutting tool on the spindle to be unable to insert and pull out. The number of disc reeds is too much, the cylinder can not push the tie rod, the tool can not be loosened or inserted, the number of disc reeds is less, the space size is wrong, the locking nut can not lock the spring, and the disc spring has no pre-tightening force, then the spindle cannot grasp the knife at all. Therefore, it is necessary to increase or decrease the number of disc reeds reasonably according to the actual size of the disc spring, and adjust the locking degree and position of the lock nut according to the actual action of the spindle inserting and pulling out the tool. If the lock nut is adjusted too tightly, the cylinder can not push the tie rod, but also speed up the fatigue and fracture of the disc spring. 6. If in the process of changing the knife, only one tool can not normally change the knife or swing the knife, then it should be considered that the tool problem is often the heaviest tool phenomenon. Because the weight of the tool causes the tool sleeve to wear quickly or the tool handle and the tool sleeve are not clean and have dirt, it can also speed up the tool sleeve wear. This phenomenon can be eliminated by replacing the cutter sleeve at this time. 7. Handle wear and pull nails are not suitable, which will lead to normal tool change, so regular inspection, replacement of handle and pull nails can avoid this phenomenon. The above are some common problems that occur in the process of tool change in vertical machining centers and some small methods of how to solve these tool change failures. If there are some tool change faults that are not in the above problem points, and you can not solve them, you can contact the after-sales department of Duyang CNC at any time, they will solve the problems for you in time. Pay attention to Duyang CNC, share more knowledge of machine tools with you.