The Stefa VHX is the next level on the folding technology: The positive and negative bending, automatic grippers and no handling production assures that you do step forward into sheet metal working tomorrow.
The positive and negative bending introduce a new, efficient process for sheet metal folding. This will increase the speed of production and reduce the time required to handle the material, in comparison with the traditional benders. The bending beams have a reinforced tool that can be removed to achieve smaller bends. Also the bending beams have a retractable max. distance of 300mm which allows more space for bends.
Servo Hydraulic Pump Technology ensures a fast, precise production cycle with accurate control of acceleration and velocity via closed-loop control. It features idle phases that require no hydraulic power, increasing efficiency as idle time grows. And because some axes are electric, such as the Bending Beams' displacements, they easily can work at the same time, reducing time of positioning between the steps.
The gripper securely holds the material, and automatic positioning handles the job—eliminating the need for operator intervention in most cases. It features two backstops, front and rear, allowing 90º bends up to 45 mm in height. If needed, a standard backstop can be used for semi-automatic operation, similar to traditional folders.
Ease of use means faster, mistake-free operation. The Alligator Software was specifically developed for the folding industry, offering both flexibility and simplicity. Users can draw profiles with a finger, automatically calculate the bending sequence, set the type of gripper or finger, access graphical and numeric cut lists, and take advantage of many other advanced features. Also there is a possibility to have an office license for remote programming and Industry 4.0 interconnection.
Easily program a tapered part with the Alligator Software where it is possible define the point of start in any length of the machine and check possible collisions.
The bending tooling of Stefa VHX was designed to meet the most possible range of sheet metal profiles. The Bending Beams have a narrow angle of attack allowing bendings of 15mm. The lower beam has a special curve to allow profiles like the J or F-channel. All tools are made in a high strength steel alloy with flexibility to assure a long range of work life.
The concept of the VHX is to increase automation and reduce to the minimum manual operations and the Automatic Trays feature is part of the solution. They extend to outside to capture the sheets and automatic introduces and positioning into the grippers. Also the machine is equipped with multiple loading of the gripper allowing that the operation of full automatic cycle can be made with only one operator, in case of working multiple sheets.
The high speed shear attached to the base frame of the machine, assures a fast and precise cutting on the material. It is possible to cut multiple sheets with the starting point of material resting on the machine table. This means a bigger efficiency to use big lengths for cut, less manual operation and more safety. By request, it is possible to add a Roll Former unit on the shear support to keep hemming processes always precise or to have special forming operation.
When the machine is in full automatic mode, the horizontal and vertical light guards create a safety area to avoid any human approximation to the movements of the tools. Additionally it is possible to turn off the Safety Area and work with safe speeds to not lose flexibility on the production.
| MODELS VHX | Working Length | Max. Thickness (St40) | Max. Range Backgauge |
| VHX3 | 3200mm | 2,0mm | 1250mm |
| VHX4 | 4200mm | 2,0mm | 1250mm |
| VHX6 | 6400mm | 2,0mm | 1250mm |
| VHX8 | 8400mm | 2,0mm | 1250mm |
*Other lengths and thickness available. Contact us to know all configurations that can be manufactured.
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