How to achieve ultra precision machining of high speed press?

In the high-end manufacturing field, the pursuit of component accuracy and processing efficiency is endless. As the core equipment for metal forming processing, the ultra precision machining capability of high speed press directly determines the quality and performance of products. In recent years, with the deep integration of materials science, intelligent control, and mechanical design technologies, high speed press are breaking through the bottleneck of traditional processing, achieving micrometer level or even higher precision processing, providing key technical support for cutting-edge industries such as aerospace and semiconductor manufacturing.

1. Mechanical structure: dual guarantee of rigidity and stability

The high speed press achieves ultra precision motion control through a triple guiding structure: the upper and lower guide rails adopt static pressure guiding technology, using hydraulic oil film to eliminate direct metal contact and reduce the friction coefficient to below 0.001; The middle guide rail uses rolling guidance, and the guide clearance is controlled within ± 0.002mm range through high-precision ball bearings. This composite guiding design ensures that the deviation of the slider motion trajectory is less than 0.005mm, ensuring the accuracy of mold alignment. For example, a heavy-duty high speed press can maintain a slider perpendicularity error of ≤ 0.01mm/m under 7500kN pressure by optimizing the four guide column balance structure, providing a mechanical foundation for ultra precision machining.

2. Control System: Dynamic Response and Intelligent Decision making

Modern high speed press are equipped with open CNC systems that integrate sensor networks and real-time databases. The slider position sensor collects data at a frequency of 2000 times per second, and combined with the intelligent selection subsystem of process parameters, it can automatically adjust the stamping speed (up to 2000 times/minute), bottom dead center accuracy (± 0.01mm), and pressure curve. Taking the stamping of motor stator and rotor as an example, the system dynamically optimizes the punching gap (0.05-0.1mm) by analyzing parameters such as material thickness (0.1-0.5mm) and hardness (HV200-400), so as to control the burr height within 0.02mm. In addition, the remote monitoring function can transmit real-time data such as device vibration and temperature, supporting fault prediction and cloud optimization of process parameters.

3. Process optimization: Collaborative innovation of materials and molds

Ultra precision machining requires matching with specialized molds and material processing technologies. The cutting edge of the mold is subjected to ultra deep cold treatment (-196 ℃ cycle 3 times), with a surface roughness of Ra0.2 μ m, hardness increased to HRC62 or above, and a lifespan extended by 3 times. In terms of materials, water treatment chemicals are used to pre treat metal sheets, reducing stamping burrs by 40% by removing oxide layers and adjusting surface tension. For example, in the stamping of 0.2mm thick stainless steel, the combination of lubricant and titanium plating treatment on the mold surface can achieve continuous stamping 500000 times without cracks.
Looking ahead to the future, the ultra precision machining technology of high speed press will continue to evolve towards intelligence and green direction. By introducing artificial intelligence algorithms to optimize processing parameters, developing environmentally friendly lubrication and cooling technologies, and promoting deep collaboration between industry, academia, and research, the industry is expected to achieve higher efficiency and lower energy consumption in ultra precision machining. This process will not only reshape the competitive landscape of the manufacturing industry, but also inject new development momentum into global high-end equipment manufacturing.