What are the differences between standard high speed mold machining center and ordinary machining center?

1. Spindle system and cutting performance
The spindle speed of standard high speed mold machining center generally reaches 12,000~24,000 rpm, and adopts direct-drive electric spindle design to reduce transmission chain error and quickly respond to cutting needs. The spindle speed of ordinary machining center is mostly 8,000~12,000 rpm, relying on belt drive, and has weak dynamic performance. The spindle power of high-speed model is up to 15 kW, which supports large cutting volume processing, and the power of ordinary model is mostly 7.5~11 kW, which is suitable for light cutting.

2. Accuracy and surface quality
The positioning accuracy of high-speed model can reach ±0.003 mm/300 mm, and the repeat positioning accuracy is ±0.002 mm, while the ordinary machining center is mostly ±0.008~0.02 mm, and the repeat accuracy is ±0.005 mm. High-speed models use closed-loop grating scales and nano-level CNC systems to compensate for thermal deformation and mechanical errors in real time, and the 3D curved surface cutter mark is controlled within 0.005 mm. Ordinary models rely more on open-loop control, and the dynamic error is large.

3. Cooling and thermal management
High-speed models use temperature differential oil coolers and air curtain protection systems to ensure that the spindle temperature rise is ≤1°C to avoid thermal deformation. Ordinary models rely more on natural heat dissipation or simple water cooling, and the temperature control stability is poor. High-speed models balance the temperature of key components through a central lubrication system and a circulating heat exchanger. Ordinary models have relatively extensive thermal management, and long-term operation is prone to precision drift.