Які причини помилок у обробці деталей з ЧПУ

Під час роботи центру обробки деталей між гвинтом і гайкою існує певний зазор. У міру збільшення часу роботи обладнання зазор поступово збільшується внаслідок зносу. Отже, відповідна компенсація зазору зворотного руху є головним фактором подолання плечей, що утворюються на обробній поверхні. Для вимірювання зазору зазвичай використовується метод вимірювання циферблата, який вимагає контролю помилок. Однак слід зазначити, що основа датчика і калібрувальний стержень не повинні витягатися занадто високо або занадто довго, оскільки під час процесу вимірювання, через довгий консоль, основа датчика буде переміщена силою, що призведе до неточного підрахунку та компенсації значення. помилка.

Improper tool selection in CNC machining can also cause dimensional errors. During the cutting process, the tool removes material through the main cutting edge. However, after the arc passes through the quadrant and the arc is tangent to the second cutting edge of the tool, the second cutting edge may participate in cutting. Therefore, when selecting or grinding a tool, the wedge angle of the tool must be carefully considered.

During CNC machining, if the machining allowance is not uniform, an error may occur. In the process of achieving part design performance, whether the machining allowance of the CNC machining surface is even or not is also an important reason for whether the molding surface can meet the design requirements. Because the machining allowance is not uniform, it is easy to cause "remapping" errors. Therefore, for parts with high surface shape requirements, the manufacturing allowance should be as uniform as possible before forming, or multiple contours should be processed to meet the design requirements.

CNC machining has clear regulations on the workshop environment, and the heat source needs to be reduced: the focus is on the spindle bearing speed, clearance adjustment and reasonable preload. For thrust bearings and tapered roller bearings, due to their poor working conditions and high heat generation, thrust angular contact ball bearings can be used when necessary to minimize friction and heat generation of certain parts. CNC machining also requires heat insulation: keep the heat source away from the spindle, such as isolating the motor and transmission, using separate transmission, etc. CNC machining also needs heat dissipation: strengthen lubrication and cooling, and use oil cooling, air cooling and other methods to speed up heat dissipation. Reducing the influence of thermal deformation: No matter which method is adopted, it can only reduce thermal deformation, and it is difficult to completely eliminate thermal deformation. Therefore, measures should also be taken to reduce the effects of thermal deformation.

The above explanation is the reason for the error of CNC machining parts. I hope it will be helpful to you after reading. If you want to learn more about CNC machining parts, please contact customer service online or call our service hotline (Upper right corner of the website) For consultation, we will provide you with quality service wholeheartedly!