The hollow-type servo press (or multi-station servo press), a core piece of equipment in the field of
precision forming in 2026, is a high-end pressure processing device that integrates servo drive technolo
gy, precision mechanical transmission, and digital control. It differs fundamentally from traditional hydr
aulic or mechanical presses, being specifically designed for complex multi-hole structures, high-precision
stamping, and variable-stroke processing requirements.
The following is a detailed introduction from four dimensions: technical principles, core advantages, key
applications, and future trends.
I. Technical Principles and Structure
The core of the hollow-type servo press lies in the digitalization of its power system. It eliminates the
flywheel, clutch, and hydraulic station of traditional presses, directly driving the precision ball screw or
eccentric mechanism through a high-performance AC servo motor.
Servo Drive System: Real-time closed-loop control of the press slide position, speed, and pressure is achieved by controlling the current. In 2026, domestic servo systems, represented by Inovance Technology, can achieve microsecond-level response, ensuring precise positioning of the slide at any point.
Hollow Die Integration: This equipment is usually equipped with multi-station or matrix-type hollow dies,
capable of completing multiple processes such as punching, flanging, and expanding on a single mach
ine. Its "hollow die" design often incorporates quick die change technology, adapting to flexible production of small batches and multiple varieties.
Multi-axis Synchronous Control: For ultra-large hollow presses, multi-servo motor synchronous drive
technology is used to ensure the parallelism of the long slide under unbalanced loads.
II. Core Performance Advantages
1. Flexible Curve Control (Programmable Motion)
Traditional presses have a fixed stroke (simple harmonic motion), while the slide curve of a servo press
can be "customized" according to process requirements. For example:
Slow contact, fast return: Reduces stamping noise and minimizes die impact.
Pressure holding function: Pauses at a specific depth for finishing, eliminating material springback.
2. Extremely High Processing Accuracy
Due to digital control, the repeatability of the slide positioning can reach ±0.01mm or even higher. In
multi-hole processing, this ensures extremely high consistency in the depth and diameter of each hole,
effectively improving product yield. 3. Energy Saving, Environmental Protection, and Low Noise
Servo presses consume electricity only during the working stroke, with extremely low power consumptio
n during idling. Compared to hydraulic presses, they can save 40%-60% of energy. At the same time,
due to the absence of hydraulic shock and flywheel friction, the working environment noise is reduced
by more than 20 decibels.
4. Real-time Online Quality Monitoring
The equipment is equipped with high-precision pressure sensors and displacement sensors, which can
draw a "pressure-displacement curve" in real time. If the forming force of a certain hole is abnormal, the
system will automatically alarm and reject the defective product, achieving a shift from "post-production
inspection" to "process control."
III. Typical Application Areas
In the manufacturing landscape of 2026, hole-type servo presses play an irreplaceable role in the follow
ing areas:
Lightweighting of New Energy Vehicles: Used for processing high-strength steel and aluminum alloy
body frame holes, battery pack base brackets, etc. The slow forming characteristics of servo presses
effectively solve the problem of easy cracking of aluminum alloys.
Semiconductor and Electronic Heat Dissipation: Processing high-density micro-holes on precision heat
sinks, mobile phone frames, and other components. Due to the extremely small hole spacing, only the
stability of the servo press can ensure that the base material is not damaged.
Precision Stamping of Home Appliances: Such as multi-hole forming of air conditioner fins and washing
machine inner drums. The significant speed increase of servo technology (up to 100-200 strokes/minute)
significantly improves production line efficiency.
Aerospace Structural Components: For difficult-to-machine materials such as titanium alloys, the pulsed
stamping technology of servo presses is used to reduce work hardening effects.
IV. Technological Evolution Trends in 2026
AI Intelligent Compensation: High-end servo presses in 2026 have integrated AI algorithms, which can
automatically sense minute fluctuations in material thickness and compensate the slider stroke in real
time to ensure consistent stamping depth.
Digital Twin and Predictive Maintenance: Through digital twin technology, operators can view the operat
ing status of the press in real time from the office. A big data-based fault prediction system can issue
replacement reminders two weeks before the motor or ball screw is damaged. Modular Design: To cope
with the rapid changes in global supply chains, hole-punching presses are evolving towards modular
design. Users can replace different punch modules like building blocks, achieving "one machine for mult
iple purposes."
V. Conclusion
The hole-punching servo press is not only a processing machine but also an intelligent terminal in the
intelligent manufacturing system. Through precise motion control and real-time data flow, it solves the
contradiction in traditional processing methods where accuracy, efficiency, and energy efficiency cannot
be achieved simultaneously. As "Made in China 2025" enters a more advanced stage, the hole-punching
servo press is leading the forming industry's comprehensive transformation from "manufacturing" to "
intelligent manufacturing."
