The vertical press for metalworking is a reliable and versatile industrial machine designed to stamp and form metal components with high precision. The process involves placing the sheet metal in the die, while the controlled vertical movement of the press slide applies uniform force to the material.
This system ensures precision, repeatability and production continuity, making the metal stamping press suitable for numerous industrial applications, from the production of components for electronic devices to structural elements for the automotive sector.
Requirements:
Slide position control
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Monitoring deformation of columns or side guides
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Hydraulic circuit pressure measurement
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Hydraulic oil temperature monitoring
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Requirement:
Slide position control
Accurate control of the slide position is essential to ensure precision and quality in metal forming processes.
Stable and repeatable measurement allows for precise setting of working depth, speed transitions, and stopping points. This prevents dimensional defects, reduces mold wear, and maintains constant alignment between the slide and the mold, optimizing the entire production cycle.
Solution:
WPA series contactless magnetostrictive linear position sensors are used for precise control of the slide position in vertical metalworking presses. Contactless technology eliminates wear between the sensor and slider, ensuring reliability and long operating life even in applications with repeated cycles.
- Strokes from 50 mm to 4000 mm
- Magnetic slide or floating slider
- Analog, PROFINET, EtherCAT, and SSI outputs
With the WPA series, Gefran offers solutions designed to ensure measurement accuracy, operational stability, and long-term reliability in metal forming and stamping applications.
Requirement:
Monitoring deformation of columns or side guides
Monitoring the deformation of the columns in a vertical press is essential to ensure the geometric stability of the machine during the closing phases.
The columns guide the slide and must maintain parallelism and rigidity even under high stresses. Any bending or imbalance can compromise alignment, cause premature wear of the dies, and reduce the quality of the formed parts. Continuous detection and analysis of such deformations allows anomalies to be identified, overloads to be prevented, and the precision of the production process to be maintained.
Solution:
For monitoring structural deformation in vertical metalworking presses, Gefran offers the SL-VAA deformation sensor. The sensor detects surface deflection between two mounting points with high sensitivity, amplifying even minimal variations and providing a fast and stable signal thanks to the integrated analog amplifier.
- ±10 Vac analog output
- Real-time monitoring (<20 µs)
- M12 connector
- Tension and compression deformation detection
With the SL-VAA series, Gefran offers solutions designed to ensure accurate deformation monitoring, process stability, and structural protection in metal forming and stamping applications.
Requirement:
Hydraulic circuit pressure measurement
In vertical metal presses, it is essential to accurately monitor and control the pressure of the hydraulic circuit, which determines the moving and closing force.
Accurate control ensures process quality, safety, and repeatability, preventing deformation, breakage, and possible risks to the operator. Continuous pressure adjustment allows the molding force to be automatically adapted to different materials, improving productivity and reducing unscheduled machine downtime.
Solution:
- SIL2 certification
- Measuring range from 4 bar to 1000 bar
- Response time < 1 ms
- Analog output and IO-Link communication
Requirement:
Hydraulic oil temperature monitoring
Monitoring the temperature of hydraulic oil is essential to prevent overheating, which can compromise performance and damage components.
At high temperatures, oil loses its lubricating properties, accelerating wear and failure. Maintaining the temperature within the optimal range, generally between 45°C and 50°C, ensures proper operation and long system life, while preserving operational efficiency and avoiding unnecessary maintenance.
Solution:
The TR1 resistance temperature sensor with welded connection (TR1C) is the ideal solution for monitoring hydraulic oil in tube bending machines, ensuring constant temperature control and preventing the risk of overheating.
- Thermoresistance technology (Pt100 / Pt1000)
- High accuracy and stability over time
- Robust stainless steel housing
- Easy integration into hydraulic circuits
With the TR1C temperature sensor, Gefran offers a reliable solution for monitoring temperature in hydraulic circuits, helping to ensure operational stability and component protection in vertical metalworking presses.
Operating principle:
A vertical press for metalworking operates by applying a force perpendicular to the workpiece, usually a sheet metal or billet. The machine consists of a rigid frame, a fixed lower table, and a movable slide that runs along structural guides, ensuring precision and stability during the operating cycle.
The material is positioned between the table and the die, while the slide descends in a controlled manner , deforming the metal through operations such as stamping, deep drawing, shearing,or bending, depending on the tool installed. At the end of the stroke, the system returns the slide to its initial position, allowing the workpiece to be removed and a new production cycle to begin.
Modern industrial applications mainly use hydraulic presses, which guarantee high, constant, and adjustable force throughout the entire stroke. Controlling the pressure of the hydraulic circuit allows for precise adjustment of the speed, force, and position of the slide, adapting the process to the different requirements of metal forming.
Requirements and technology:
A vertical press for metalworking requires advanced technological solutions to guarantee product quality and production continuity. Accurate measurement of the slide position allows precise control of switching points, speed, and working depth, which are fundamental parameters in bending, shearing, and deep drawing processes.
The hydraulic circuit, responsible for the movement and closing force of the press, must guarantee stable and adjustable pressure to ensure repeatability and stability of the process over time. At the same time, the rigidity of the frame is essential to avoid deformations that could compromise the alignment between the slide and the die.
The columns and side guides must ensure precise sliding, reducing play and maintaining constant parallelism of the slide throughout the entire stroke. Finally the integration of control systems and industrial sensors allows the monitoring of hydraulic, positional, and structural parameters , optimizing productivity, reducing waste, and improving the stability of the metal forming process.