Requirements of machining orders for processing equipment:
1. The precision of machining equipment should be high
Machining equipment should have high accuracy, including high static accuracy and dynamic accuracy. The main performance indicators include geometric accuracy, motion accuracy (positioning accuracy, repeated positioning accuracy) and resolution, such as spindle rotation accuracy, guide rail motion accuracy, indexing accuracy, etc. At present, the spindle rotation accuracy of ultra precision lathes is mostly 0.02 ~ 0.03 μ m. The straightness of guide rail is 0.025/1000000, and the positioning accuracy is 0.013 μ m. The accuracy of repeated positioning is 0.006 μ m. Feed resolution is 0.003 μ m. The indexing accuracy is 0.5 ". Modern precision machine tools and ultra precision machine tools mostly use the spindle and guide rail of hydrostatic bearings or aerostatic bearings, precision ball screw transmission, equipped with micro workbench and error compensation device to realize micro displacement. For high-speed rotating parts and components, action balance should be carried out.
2. The rigidity of machining equipment should be high
Machining equipment should have high stiffness, including static stiffness and dynamic stiffness. In addition to the stiffness of parts and components, attention should also be paid to the contact stiffness. At the same time, the stiffness of the process system composed of workpiece, machine tool, cutter and fixture should be considered. Although the cutting force of precision machine tools and ultra precision machine tools is small, the force deformation of machine tools will have a great impact on the accuracy.
3. The stability of machining equipment should be high
After transportation, storage, installation and commissioning, the machining equipment shall be able to maintain accuracy, anti-interference and stable operation for a long time under the specified working environment. Therefore, the processing equipment should have good wear resistance, vibration resistance and thermal stability.
4. The degree of automation of machining equipment should be high
In order to ensure the processing quality and reduce the influence of human factors, most of the current machining equipment are equipped with precision numerical control system to realize automatic control, or computer control to realize adaptive control and optimization to ensure the production and processing requirements of parts.
(Editor: we are Shenzhen perfect precision products Co., Ltd., specializing in providing laser cutting, bending, stamping, spinning, welding and other high-quality sheet metal processing services. With 15 years of experience and a 3000 square meter factory, we have an experienced engineering team, with iso9001:2015 quality system and imported machines from the United States and Japan. You can send us inquiries below.)