Servo Press Machine for Automated Assembly Applications
Introduction
A servo press machine is a CNC-controlled pressing unit that uses a servo electric cylinder to apply force and control displacement during assembly operations. In automated assembly environments, the pressing step is often where fit, function and quality are decided, so the ability to control force and position precisely, and to record what happened during each cycle, has a direct effect on production stability.
Traditional pressing methods depend heavily on mechanical setup and operator judgment. A servo press machine approaches the same operation differently: motion is driven by a servo system, force and displacement are measured continuously, and each pressing cycle can be evaluated against defined criteria. For automotive assembly lines that require repeatable results and documented process data, this combination is what makes the technology relevant.
This guide explains what a servo press machine is, how it works, its key features, where it is applied, and what to consider when integrating one into automated assembly equipment. It is written for manufacturing engineers, production managers and purchasing teams evaluating press fitting equipment for automotive and industrial production lines.
Product Overview
The N-Series Servo Press Fitting System is a high-precision CNC press unit designed for automated assembly and manufacturing applications. It integrates servo motion control, force and displacement measurement, process monitoring and production data management. The system is intended for precision assembly in automotive manufacturing and industrial production lines, where stable, repeatable and traceable press fitting processes are required. Learn more about the N-Series Servo Press Fitting System.
The system is available in multiple force configurations, from 2 kN up to 350 kN, which allows it to cover applications ranging from low-force precision assembly to high-force industrial pressing. Each configuration uses the same underlying architecture: a servo electric cylinder, industrial software, a control box, a monitoring instrument and a cable module.
In practical terms, the servo press machine addresses a common industrial problem. Pressing operations are sensitive to variation in material, tooling and part geometry, and deviations are often only discovered after assembly. By monitoring force and displacement in real time and evaluating each cycle, the system helps manufacturers detect process deviations and maintain consistent assembly quality.
System Composition
The modular system architecture consists of the following elements:
Servo electric cylinder — provides precise servo motion control and houses the integrated pressure sensor.
E-Press industrial software — used for programming, monitoring and evaluating press fitting processes.
Control box — part of the control and signal chain of the press unit.
Monitoring instrument — supports force and displacement measurement during pressing.
Cable module — connects the modules of the system.
Because the system is modular, it can be flexibly integrated into automated assembly equipment and automotive production lines rather than being tied to a single machine format. The modular design also supports the use of different press fitting functional modules in customized assembly equipment.
Working Principle
The servo press machine applies force through a servo electric cylinder. During a pressing cycle, force and displacement are measured continuously, and the resulting data is used both for real-time control and for process evaluation.
Motion and Force Control
The system supports several control modes. In force-controlled pressing, the press regulates the force applied to the workpiece. In displacement-controlled pressing, the motion is governed by position. The system also supports external signal-based control, which allows the pressing operation to be triggered or coordinated by signals from the surrounding automation.
The servo electric cylinder contains an integrated pressure sensor that provides force measurement for real-time process monitoring. The anti-torsion press rod can be connected directly to press tooling, which simplifies integration into automated assembly equipment.
Measurement and Evaluation
Force and displacement detection is integrated into the system, and pressing conditions are monitored in real time throughout the assembly process. Each pressing cycle can be evaluated using built-in evaluation functions, including judgment windows, envelope curves and measurement analysis. Results are classified as OK or NG based on the defined evaluation criteria.
Data Interaction and Traceability
Measurement data and assembly results can interact with PLCs and production servers, supporting process data recording and traceability. This allows the pressing result to become part of the production record rather than a standalone measurement.
Key Features
High-Precision Servo Control
Force accuracy up to 1% FS
Position accuracy up to 0.01 mm
Stable and precise servo motion control
Integrated Force and Displacement Measurement
Integrated force and displacement detection
Real-time monitoring of pressing conditions
Continuous measurement throughout the assembly process
Sampling frequency of 20 kHz with 24-bit acquisition accuracy
Flexible Process Control
Force-controlled pressing
Displacement-controlled pressing
External signal-based control
100% Process Monitoring
Each pressing cycle can be monitored in real time to detect process deviations and maintain consistent assembly quality.
Process Data Traceability
Measurement data and assembly results can interact with PLCs and production servers, supporting process data recording and traceability.
Multiple Evaluation Functions
Built-in evaluation functions support different pressing requirements, including judgment windows, envelope curves and measurement analysis.
Wide Force Range
The system is available in multiple force configurations, covering applications from low-force precision assembly to high-force industrial pressing.
E-Press Industrial Software
E-Press provides an intuitive interface for programming, monitoring and evaluating press fitting processes. Its functions include:
Real-time force-displacement curve display
Real-time force-time curve display
Multiple pressing steps and process curves
Judgment window and envelope curve evaluation
Measurement and OK/NG result evaluation
Hierarchical user permission management
Press fitting history and operation logs
Alarm log management
Support for MS SQL and Microsoft Access databases
Communication and Data Formats
The system supports OPC, EtherNet/IP and PROFINET fieldbus communication, and output formats include CSV and XLS. Supported software languages are Chinese and English.
Mechanical and Environmental Specifications
Maximum pressure holding time: 3 s
Noise: below 75 dB
Service life: more than 12 million cycles
Protection rating: IP54
Rated power: 0.2–14.5 kW, 50/60 Hz
Rated voltage: single-phase 220 V, three-phase 220 V, or three-phase 380 V depending on the model
Operating environment: 0–50°C, 10–90% RH non-condensing
Available Configurations
| Model | Stroke (mm) | Maximum Pressure (kN) | Running Speed (mm/s) | Force Accuracy | Position Accuracy (mm) |
|---|---|---|---|---|---|
| 2KN | 100–200 | 2 | 0.02–260 | 1%FS | 0.01 |
| 5KN | 100–200 | 5 | 0.02–260 | 1%FS | 0.01 |
| 10KN | 100–400 | 10 | 0.02–250 | 1%FS | 0.01 |
| 20KN | 100–400 | 20 | 0.02–125 | 1%FS | 0.01 |
| 30KN | 200–400 | 30 | 0.02–200 | 1%FS | 0.01 |
| 50KN | 200–400 | 50 | 0.02–200 | 1%FS | 0.01 |
| 80KN | 300–400 | 80 | 0.02–160 | 1%FS | 0.01 |
| 100KN | 300–400 | 100 | 0.02–140 | 1%FS | 0.01 |
| 150KN | 200–400 | 150 | 0.02–140 | 1%FS | 0.01 |
| 200KN | 200–400 | 200 | 0.02–100 | 1%FS | 0.01 |
| 350KN | 200–400 | 350 | 0.02–50 | 1%FS | 0.01 |
Note: Specifications may vary depending on the product model. Please refer to the actual product configuration.
Applications
The servo press fitting system is used in automated assembly and manufacturing environments. Its supported applications include:
Press fitting and component assembly — joining components where force and position need to be controlled and verified.
Automotive component assembly — pressing operations within automotive component manufacturing and assembly.
Forming and riveting — forming operations and riveting processes that require controlled force and displacement.
Punching operations — punching tasks carried out within automated equipment.
Elasticity and performance testing — measurement-based testing of component behavior under applied force.
High-cycle automated assembly — repetitive pressing operations in automated production, supported by a service life of more than 12 million cycles.
Because the system can be integrated with PLCs, industrial control systems and production servers, it is suited to automotive assembly lines that require high repeatability, quality control and process traceability. Its modular architecture allows it to be built into automated assembly equipment rather than operated as a standalone manual press. For complete equipment configurations, see KINMARK's servo press fitting systems.
Benefits
Improved Process Consistency
Servo motion control with force accuracy up to 1% FS and position accuracy up to 0.01 mm supports stable and repeatable pressing results across production cycles.
Real-Time Detection of Deviations
Continuous force and displacement measurement allows each cycle to be monitored as it happens, so process deviations can be detected rather than discovered later.
Traceable Assembly Results
Measurement data and OK/NG results can be exchanged with PLCs and production servers, supporting process documentation and traceability requirements.
Flexible Integration
The modular design, external signal-based control and fieldbus communication options (OPC, EtherNet/IP, PROFINET) allow the press to be integrated into existing automation architectures.
One Platform Across Multiple Force Requirements
With configurations from 2 kN to 350 kN, the same system family can address low-force precision assembly and high-force industrial pressing, which simplifies engineering and spare-parts planning across a production area.
Designed for Production Environments
A high-strength mechanical construction, IP54 protection rating and an operating range of 0–50°C support reliable operation in demanding industrial production environments.
Why Choose KINMARK
KINMARK (Jinan Zhongzheng Jinma Technology Co., Ltd.) was founded in 1996 and is a developer and manufacturer of marking and traceability systems, servo press systems, fluid filling systems and robot automation systems. The company is recognized as a Shandong Province "Gazelle" enterprise and a "Specialized, Refined, Distinctive and Innovative" enterprise, with offices and service centers in Shanghai, Beijing, Guangzhou, Changchun, Wuhan and Chongqing.
KINMARK began with marking equipment and has progressively expanded into automotive intelligent automation equipment. Its servo press fitting systems are part of a product portfolio that also includes marking and traceability, fluid filling and robot automation systems, which means press fitting requirements can be considered alongside the wider automation and traceability architecture of a production line.
The company serves vehicle manufacturers, powertrain and automotive component producers, and new energy vehicle manufacturers, and also provides automation solutions to industrial companies outside the automotive sector. Its teams combine industry background with practical experience in robot technology, intelligent control, image recognition and industrial data technologies.
For servo press projects, KINMARK provides installation and commissioning by its engineers, operator training to help customers start production smoothly, a 12-month warranty on the complete machine, and after-sales support including remote diagnosis and technical assistance.
Frequently Asked Questions
What force range does the N-Series servo press machine cover?
The N-Series is available in configurations from 2 kN to 350 kN maximum pressure. Stroke, running speed and other parameters vary by model, so the appropriate configuration depends on the specific assembly application.
What accuracy can the servo press achieve?
The system provides force accuracy up to 1% FS and position accuracy up to 0.01 mm. Force and displacement are measured continuously during the pressing cycle with a sampling frequency of 20 kHz and 24-bit acquisition accuracy.
How does the system support traceability?
Measurement data and assembly results can interact with PLCs and production servers, supporting process data recording and traceability. The E-Press software provides press fitting history, operation logs, alarm logs and OK/NG result evaluation, and output formats include CSV and XLS.
Can the servo press machine be integrated into an existing automated assembly line?
Yes. The system has a modular architecture and supports external signal-based control. It can be integrated with PLCs, industrial control systems and production servers, and supports OPC, EtherNet/IP and PROFINET fieldbus communication.
What support is provided after installation?
KINMARK engineers provide equipment installation, commissioning and operator training. The complete machine is covered by a 12-month warranty, and after-sales support includes remote diagnosis and technical assistance to help maintain continuous operation.
Conclusion
A servo press machine brings controlled force, controlled displacement and continuous measurement together in a single assembly unit. For automated assembly applications, this means pressing operations can be monitored cycle by cycle, evaluated against defined criteria, and recorded as part of the production data stream.
The N-Series Servo Press Fitting System applies this approach across a force range from 2 kN to 350 kN, with force accuracy up to 1% FS, position accuracy up to 0.01 mm, E-Press industrial software, and integration options through PLCs, production servers and standard fieldbus communication. For automotive and industrial manufacturers building or upgrading automated assembly lines, selecting a press system on these capabilities, rather than on force alone, is the practical starting point.
If you're interested in any of the equipment mentioned in this article, feel free to contact our sales engineers for detailed product information and customized technical solutions.