To reduce the surface roughness of the shaft to reduce noise and vibration of the FA57-50-M1-BCHO60, start from the following aspects:
Optimize processing technology
Adjusting cutting parameters: During cutting processing, selecting a smaller feed amount can reduce the cutting residual area and reduce the surface roughness value. At the same time, reasonably increasing the milling speed and cutting within the high-speed range permitted by the cutting system can effectively improve the metal removal rate per unit of power per unit time, reduce the plastic deformation of the accumulated chips, stitches and workpiece materials, and thus reduce the surface roughness value. For turning, a lower cutting speed is generally chosen during the roughing stage to improve efficiency and reduce tool wear; for the finishing stage, a higher cutting speed is chosen to help obtain a smoother surface.
Tool selection and improvement: Select the appropriate tool material according to the material of the shaft. For example, if the aluminum alloy is processed, K series cemented carbide tools should be used. High-performance cemented carbide tools or coated tools can be used for processing steel parts. Cutting with sharp tools reduces cutting force and cutting heat, avoids accumulation of chips and burrs, and reduces surface roughness. The tool can be modified when necessary, such as sharpening the blade into a special shape to reduce vibration.
Add processing steps: Add a semi-finishing process between rough processing and finishing, and control the finishing allowance to a small range, which helps improve the surface quality of finishing. For shafts with high accuracy requirements, polishing and other optical finishing processes can also be used to further reduce the surface roughness.
Perform heat treatment
Appropriate heat treatment of shaft materials, such as normalizing, annealing, and tempering before and after roughing processing, can improve the cutting performance of workpiece materials and eliminate the internal stress of workpiece materials after roughing processing; quenching, tempering, nitriding, etc. before and after finishing processing can increase the surface hardness and wear resistance of the shaft, making the shaft surface less likely to cause scratches and deformation during the processing process, which is conducive to reducing surface roughness.
Control processing equipment and environment
Improve equipment accuracy and stability: Use high-precision processing equipment to ensure that the equipment's spindle rotation accuracy, guide rail straightness and other indicators meet the requirements, so as to reduce vibration and error during the processing process. Regularly maintain and maintain the equipment, check key components of the equipment, such as bearings, lead screws, etc., and replace worn parts in time to ensure the stability of the equipment.
Improve the processing environment: Keep the temperature and humidity of the processing environment stable, and avoid thermal expansion, contraction or deformation of the shaft material due to environmental factors, affecting the processing accuracy and surface quality. At the same time, try to minimize the vibration sources at the processing site to prevent external vibration from being transmitted to the processing equipment and interfere with the processing process.
Choose the right material
Select the appropriate shaft material according to the working conditions and performance requirements of FA57-50-M1-BCHO60. For example, alloy steel such as 40Cr has good performance in terms of strength, hardness and impact toughness after heat treatment, and has good processing performance, which can better meet the requirements of the shaft, help reduce surface roughness and noise and vibration.
