The large motor shaft, as the core component of the motor transmission system, has the structural characteristics of large diameter, long length, and heavy weight. It also has high precision requirements for shaft neck roundness, coaxiality, surface roughness, etc. Traditional processing equipment is difficult to meet its processing needs. Large CNC horizontal lathes, with their advantages of high precision, large load capacity, and strong stability, have become the core equipment for machining large motor shafts, playing a key role in the manufacturing of large motors in fields such as power, metallurgy, and shipbuilding.
From the perspective of adaptability to processing requirements, the structural design and performance parameters of large CNC horizontal lathes can accurately match the processing characteristics of large motor shafts. The large diameter spindle and wide guide rail structure used can achieve stable support for large motor shafts weighing several tons and exceeding ten meters in length, avoiding deformation caused by the weight of the workpiece during processing; The equipped high-precision CNC system and servo drive unit can improve the control accuracy of spindle speed and feed rate to the micrometer level, meeting the high-precision machining requirements of key parts such as motor shaft neck and step surface. For example, when machining the bearing mating surface of the motor shaft, the roundness error can be controlled within 0.005mm and the coaxiality error can be controlled within 0.01mm/m, ensuring the smoothness of motor operation and reducing vibration and noise.
In terms of processing technology implementation, large CNC horizontal lathes can integrate multiple processes and simplify the machining process of large motor shafts. The machining of large motor shafts involves multiple processes such as rough turning, semi precision turning, precision turning, end face machining, and keyway pre machining. Traditional machining requires multiple equipment replacements, which can easily lead to errors due to repeated clamping of the workpiece. Large CNC horizontal lathes can complete multiple machining processes in one clamping through the equipped tool tower, power tool holder and other functional components: removing excess material on the surface of the workpiece through rough machining process, reducing subsequent machining allowance; Gradually improve surface accuracy and smoothness through semi precision and precision machining processes; The use of a power tool holder can complete pre machining such as drilling and milling grooves on the shaft end, avoiding precision loss caused by secondary clamping of the workpiece. At the same time, its supported constant linear speed cutting function can automatically adjust the spindle speed according to the machining requirements of different diameter parts of the motor shaft, ensuring that the cutting efficiency and surface quality of each part are consistent.
In practical application scenarios, large CNC horizontal lathes can also solve special problems in the machining of large motor shafts through process optimization. For example, when processing the tapered section of a motor shaft, the oblique interpolation function of the lathe can achieve precise trajectory control of the tool, ensuring the accuracy of the taper of the cone surface; Some lathes can be equipped with high-frequency quenching devices to meet the wear resistance requirements of the motor shaft surface. After processing, the shaft neck surface can be directly quenched to improve surface hardness; For the large amount of chips generated during the machining process, the lathe's high flow cooling system and automatic chip removal device can timely remove chips and heat, avoiding chip scratches on the surface of the workpiece and preventing high temperatures in the machining area from affecting accuracy.
In addition, the automation and intelligence functions of large CNC horizontal lathes can further improve the machining efficiency and quality stability of large motor shafts. The program storage and calling functions it supports can solidify mature processing parameters into programs, which can be directly called when processing the same type of motor shaft in the future, reducing process debugging time; The equipped workpiece measurement probe can detect dimensional errors in real-time during the machining process and automatically compensate for feed rate, avoiding machining deviations caused by factors such as tool wear and material hardness fluctuations.
In summary, large CNC horizontal lathes provide efficient, high-precision, and stable solutions for the machining of large motor shafts through structural design, performance advantages, and process integration capabilities. They have become a key equipment for promoting quality and efficiency improvement in the large motor manufacturing industry and play an irreplaceable role in the production of large motors in energy, heavy equipment, and other fields.