Precision machining belongs to the precision machining in mechanical machining. According to the temperature state of the workpiece to be processed, it is divided into cold machining and hot machining. Generally processing at room temperature, and does not cause chemical or phase changes of the workpiece, it is called cold processing. Robot parts processing factories generally process at higher or lower temperature than normal temperature, which will cause chemical or phase changes of the workpiece, which is called thermal processing. Cold processing can be divided into cutting processing and pressure processing according to the difference in processing methods. Thermal processing commonly includes heat treatment, forging, casting and welding.
What are the processing equipment requirements for precision processing in robot parts processing plants? Today, I will share with you Huiwenzhi, hope it will be helpful to everyone!
1. High precision
Robot parts processing plants focus on the processing and manufacturing of precision hardware and mechanical parts, including high static and dynamic accuracy. The main performance indicators include geometric accuracy, motion accuracy (positioning accuracy, repeat positioning accuracy) and resolution, such as spindle rotation accuracy, The precision of guide rail movement, indexing precision, etc. At present, the spindle rotation accuracy of ultra-precision lathes is mostly 0.02～0.03μm, the straightness of the guide rail is 0.025/1000000, the positioning accuracy is 0.013μm, the repeat positioning accuracy is 0.006μm, the feed resolution is 0.003μm, and the indexing accuracy is 0.5 “. Modern precision machine tools and ultra-precision machine tools mostly use hydrostatic bearings or aerostatic bearing spindles and guide rails, precision ball screw drive, equipped with micro-motion table, error compensation device, to achieve micro-displacement. For high-speed rotation The parts and components should be dynamically balanced.
2. High stiffness
Including static rigidity and dynamic rigidity. In addition to the rigidity of the zero and the component itself, attention should be paid to the contact rigidity. At the same time, the rigidity of the process system composed of workpieces, machine tools, tools, and fixtures should be considered. Although the cutting force of precision machine tools and ultra-precision machine tools in robot parts processing plants is not large, the force and deformation of the machine tools will cause a great impact on accuracy.
3. High stability and retention
After transportation, storage, installation and debugging, the equipment should be able to maintain accuracy, anti-interference, and work stably for a long time in the specified working environment. Therefore, the processing equipment of the robot parts processing plant should have good wear resistance, vibration resistance and thermal stability.
4. High automation
In order to ensure processing quality and reduce the influence of human factors, modern precision machine tools and ultra-precision machine tools are equipped with precision numerical control systems to achieve automatic control, or computer control is used to achieve adaptive control and optimization to ensure the production and processing requirements of parts.
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