How does the high-precision turning process of mechanical hand wheel valve body axis processing customization ensure that the shaft meets the requirements of precision assembly?
Publish Time: 2024-12-05
The high-precision turning process of mechanical hand wheel valve body axis processing customization is the key link to ensure the extremely small dimensional tolerance of the shaft, especially when the precision assembly requirements are extremely high.1. Material selection and pretreatmentHigh-quality materials: Select materials with high strength, high hardness and good processing performance, such as high-quality alloy steel or stainless steel, to ensure the stability and durability of the final product.Heat treatment: Perform appropriate heat treatment before turning, such as tempering or quenching, to improve the hardness and toughness of the material, thereby reducing deformation and wear during the cutting process.2. Precision machine tools and tool selectionHigh-precision CNC lathe: Use a high-precision CNC lathe to ensure stability and precision during the turning process. The CNC lathe should have a high-rigidity structure and a precise position control system to ensure the dimensional tolerance of the shaft.High-quality tools: Select carbide tools or ceramic tools, which have high wear resistance and high hardness, can maintain the sharpness of the tool during high-speed cutting, and reduce cutting force and vibration.3. Accurate cutting parameter settingCutting speed: Set the appropriate cutting speed according to the material characteristics and tool performance. Usually, cutting is performed within a higher speed range to improve production efficiency while reducing thermal deformation.Feed rate: Reasonable feed rate setting should ensure processing efficiency while avoiding excessive feed rate that causes excessive shaft surface roughness or excessive tool wear.Cutting depth: Reasonable cutting depth setting, usually using multiple shallow cuts to gradually approach the final size to reduce the torque and thermal deformation of each cut.4. Cooling and lubrication systemCutting fluid: Use high-quality cutting fluid to effectively cool the tool and workpiece and reduce thermal deformation. Cutting fluid also has a lubricating effect, reducing friction between the tool and the workpiece and extending tool life.Cooling system: Ensure that the cooling system works effectively, especially for high cutting speeds and deep cutting. The cooling system can quickly take away the cutting heat and prevent the workpiece and tool from overheating.5. Precision measurement and monitoringOnline measurement: During the turning process, use online measuring instruments to monitor the size and shape of the shaft in real time and adjust the cutting parameters in time. Commonly used online measurement tools include digital calipers, micrometers, and laser measuring instruments.Regular inspection: After turning is completed, use a high-precision three-dimensional coordinate measuring machine or optical projector to fully inspect the shaft to ensure that the dimensional tolerance is within the allowable range.6. High-precision fixtures and clamping technologyPrecision fixtures: Use high-precision fixtures to ensure that the workpiece is firmly fixed and does not move during the turning process. The design of the fixture should take into account the shape and size of the workpiece to ensure the stability and accuracy of the clamping.Clamping technology: Use appropriate clamping technology, such as center hole positioning, clamping force control, etc., to reduce clamping errors and workpiece deformation.7. Environmental controlConstant temperature workshop: In high-precision turning, temperature changes will have a significant impact on the size of the workpiece. Therefore, ensure that the workshop temperature is constant at around 20°C to avoid thermal deformation caused by temperature fluctuations.Dust prevention measures: Keep the workshop environment clean to prevent dust and impurities from entering the machine tool and tool, affecting the processing accuracy and tool life.8. Process optimization and experience accumulationProcess optimization: Through continuous process testing and optimization, find the best cutting parameters and tool combinations to improve processing accuracy and efficiency.Experience accumulation: The experience accumulation of operators and engineers is also very important. They need to adjust and optimize according to the actual situation to ensure that each processing can meet the high-precision requirements.Through the precision control of each link above, the high-precision turning process of mechanical hand wheel valve body axis processing customization can ensure that the dimensional tolerance of the shaft is extremely small and meet the requirements of precision assembly. From material selection, machine tool and tool selection, cutting parameter setting, cooling and lubrication system, precision measurement and monitoring, fixture technology, environmental control to process optimization and experience accumulation, each link is crucial and works together to achieve the ultimate high-precision goal.
