Description
Description
Robust machine body and construction ensure long machine life and low maintenance. High torque drive system allows HRB to achieve shorter cycle times. User friendly control units makes it possible to be less dependent on operator competence.
Specifications
- Up to 8000 mm Bending Lenghts
- Up to 200 mm Bending Thickness
- Accurate, Easy to Operate, Fast and Reliable
- Flat zone of the part is minimized
- Pre-bending, conical bending and ellipse bending can be done easily
- Double pre-bends (both ends) in one pass
- The sheet reference is maintained by tightening of top and bottom rolls
- Most desirable bending operation for CNC applications
- More efficient for cycle times
- Hydraulic and electrical systems have been safeguarded from overloading and require minimum maintenance.
- Hydraulic and electrical components are modual and designed according to world standards
Robust Body Structure
Machine’s body is strengthened and lowered to minimise the twists and deformation. Machine body, frame and steel bar connections are stress relieved after the welding operation
Planetary Swing Rolls System
Side rolls are guided by swing beds which allows them to act as 2 independent axes moving on curve shape orbits. Side rolls are approaches to the top roll on curve movement which allows to get perfect pre-bending as well as spring back minimisation. (Rectilinear Rolls System designed for top roll via more than 460 mm)
High Torque Drive System
High Torque Drive System enables Durma roller bending machines to bend metal sheets with less steps. HRB-4 machines has top and bottom rolls powered by planetary reducer, hydraulic motor and gear system. HRB-3 machines has top and side rolls powered by planetary reducer, hydraulic motor and gear system. Strong Hydraulic Brake system does not allow the sheet to slip back. Pressure safety valves are protecting the hydromotor and other components from overloads and peak pressures
Hydraulic Opening
Hydraulic opening drop-end for easy remove completed the bending
Conical Bending System
Strong body and angular bottom and side rolls enables to easily conical bend materials. While machines in the market bends conical 3 times of top roll diameter, Durma HRB machines can bend 1.5 times easily
Synchronized Rolls System
Side rolls triggered by 4 different strong hydraulic cylinders. Synchronization between Thanks to high precision load holding valves. Bottom roll tightens different thickness of sheets without deformation and taking to the consideration of its parallelism by hydraulic adjustable pressure torsion bar
