Tube bending machines

Pyramid type bending machine with 3 driving rollers having variable centre distances.

The adjustable geometry of this machine makes it possible to bend an extremely wide range of section bars and is widely used especially in the construction of window/door frames in aluminium or other material, in steel structure work and many other fields of activity.

The upper roll is hydraulically adjustable whereas the seat of the lower rolls can be adjusted in four different positions of hydraulic pipe bender.

-Wide centre distance: optimal bending of square and rectangular tubular section bars, and special section bars for closed-section window/door frames.

-Medium centre distance: optimal bending of round tubes with the right compromise to obtain very small radii without ovalising.

-Narrow centre distance: optimal bending of thin and asymmetrical section bars with maximum limitation of warping ensuring driving under any condition.

Other important features:

-Mechanical clutch device on upper roll to offset surface speed.

-Tippable base-plate to work in horizontal and vertical mode

-Rotating parts mounted on bearings and constructed in casehardened ground high alloy steel

-Machine body in steel

-Electric cabinet and hydraulic power pack incorporated in the machine.

-Wide range of accessories available upon request to permit the machine to bend any type of section bar.

- Mobile control console containing machine and interpolated computerized numeric control CNC tube benders.

Development of a control that was already amazing and is now absolutely astounding.

Simply because until now such a simply beautiful, simply intuitive and simply complete program had never been seen. Industrial computer on Windows platform able to manage two or more interpolated axes with an indescribable progression and precision.

15” Touch-screen monitor. Intuitive system to program any type of regular and/or irregular geometry designing it directly on the screen.

”dxf” file importation with possibility to modify shape to bend on the screen, directly dragging the ends of the segments to lengthen or shorten them, or clicking on the arrows to enlarge or reduce the bending radii; all the operations are acknowledged by the “bending4program” that updates in real time. In conclusion the shape we see on the screen, and that we can measure with the specific tools, is really the actual shape that the machine will produce. Completely automated management of passage from straight section to bent section. A group of algorithms that, calculated according to the machine geometry, the profile section and the shape to be obtained, produce harmonious and imperceptible association of tubing bender with perfectly symmetrical shapes.

BENDING WITH BALL MANDREL AND WIPER DIE

When the radius of the bend is smaller and/or the wall is thinner, it becomes necessary to use a

ball mandrel and wiper die. The wiper die is used to prevent wrinkles. The ball mandrel performs like a plug mandrel. The balls are used to keep the tube from collapsing after it leaves the mandrel shank.

Bending issues are enlarged when making tight bends or with thin wall tubing. It becomes more difficult to retain the material during compression.

The pressure is so intense the material is squeezed back past tangent and buckles. This area must be supported so that the material will compress rather than buckle; this is the prime purpose of the wiper die. Note, the wiper die cannot flatten wrinkles after they are formed; it can only prevent them.

Bending thin wall tubing - requirements for the bending of thin wall tubing with tight radius bends of centerline radius equaling the tube outside diameter have become more common in recent years.

To increase the problem, new alloys have been developed that are extremely difficult to bend. The proper bending machine, good tooling, and a trained operator can make all the difference.

To facilitate this type of tube bending, the material to be bent should receive special consideration. To help maintain the consistency of the tubing dimensions and characteristics, the entire material required for a given job should be acquired from one supplier, preferably even from the same lot or heat number. Premium-priced close-tolerance tubing should be considered. It often saves many more times its added cost. It may be necessary on occasion to size certain tubing before bending.

There are many pipe bending machines but only a few are capable of thin wall, 1 x D bending.

Even those machines best suited for this special bending must be in excellent condition and of a size large enough to assure rigidity. The machine must be capable of retracting and advancing the mandrel with the clamp and pressure dies closed. A hydraulically actuated pressure die is desirable. One feature of this system is that it provides identical pressure on the tube regardless of wall variation.

A pressure die boost counteracts the drag of the pressure die, mandrel and wiper die. It pushes the tube into the bending area, preventing excessive wall thin out.

Without a pressure die boost, the thinning that normally can be expected is about three quarters of the elongation of the outer wall. Companies specialized in steel bending automation for a broad array of fabricated products, includes CNC tube benders, tube measuring equipment and complete cellular integrated systems.

TUBING BENDERS

Tubing benders come in many sizes, for use in everything from heavy construction to auto building to home landscaping. They range from a 16-ton hydraulic pipe bender to a handheld bender for small-gauge copper and aluminum tubing. All of them, however, use one of four basic methods. Ram bending is the cheapest and easiest method. Tube benders are restrained at two ends and a ram deforms the pipe in the middle. This is suitable for light gauge tubing only. Rotary draw bending is the most commonly used method, and maintains the diameter of the pipe without deformation. In this method, the tube is drawn through a stationary counter-bending die onto a forming die of a specified radius. These tube bending machines are used in the formation of exhaust pipes, process pipes, and any aluminum or stainless steel application where interior deformation can't be tolerated. Bending is similar to rotary draw bending, except that the interior of the tube is supported by a flexible mandrel. The mandrel bends with the tube, ensuring that the interior diameter is not deformed. Ring roll bender is used for bending pipes and tubes with a large diameter. There are three rollers, two on the bottom and one on the top. As the pipe is rolled through, the top roller exerts a downward pressure, bending the pipe. The pressure of the top roller can be adjusted manually or hydraulically, and either two or all three rollers can be powered. This method is used to make drum barrels, awnings, and other circular shapes.

For a tube bending, two things happen to metal. The outside wall is reduced in thickness due to the stretching of the material and the inside wall becomes thicker due to the compressing of the material. The material actually is formed approximately about the centerline of the tube. The material that forms the outside of the bend has further to travel and therefore is stretched; the inside of the bend has less distance to travel and is compressed.

When the ratio of the tube diameter to wall thickness is small enough, the tube can be bent on a relatively small radius. Excessive flattening or wrinkling of the bend should not occur. The outside and inside of the bend tend to pull towards the centerline of the tube. Two factors that help prevent this from happening are a grooved bend die, which supports the tube along the centerline and the natural strength of the tube.

BENDING STEEL

The equipment used for bending is the most advanced of its kind in the world. Tooling has been developed over many years to virtually eliminate distortion of the section when bending. If there is a critical application where section integrity is important the company should be your choice of curved steel supplier.

The company is technologically advanced in all aspects from customer communication and work administration to computer controlled bending and cutting.

Capacity in each of the specialist services covers the whole range from very small sections and thin plate up to huge sections 1000 mm in size and plates up to 100 mm thick. Production system is modern and efficient. Small orders for two rings can run alongside large multi million-pound call off orders.

The company has mastered the craft of bending steel. It can produce virtually any metal component that needs to bend or curve and has an impeccable reputation in the steel bending and fabrication industry, for producing difficult and unusual parts that require bent steel, for tube bending or pipe bending machines.

This is an industry leader in structural steel bending, steel rolling and steel forming. The company works with all forms of structural steel (angle, wide flange and I-beams, channels, rectangular and square tube, and bars), as well as virtually any other ferrous and non-ferrous metals. Metal bending machine and steel forming expertise allow to produce state-of the art canopies and roof trusses, bridges, entry-ways and store fronts, stadiums and parking garages.

In addition to structural steel bending, our tube bending machines and pipe bending capabilities range from the very small to the very large. Pipe bends and metal tube bends can be found in the form of modern art sculptures, pedestrian bridges, exercise equipment, furniture, playground equipment, bike racks and bollards, and much more.

This is an industry leader in spiral, circular and helical bending, that has the ability to produce steel and metal spiral stringers and staircases. Other ornamental applications include custom handrails, decorative gates and fences, and unique signage.

Other bent steel applications include parts supplied to light and heavy industrial customers. Products include boiler tubes, heat exchangers, coils, pipe sections and tanks, pipe spools, hydraulic lines, solar panels, chip lines and much more. In addition, the company serves the marine, locomotive, aviation, automobile, agricultural, and medical and dental industries with unique, high quality parts that require metal rolling or bent steel.

To the most common forms of structural steel, the company also bends other miscellaneous material types, like architectural rail cap, railroad iron, rounds bars, square bars, etc.

PIPE BENDING MACHINE

The range of pipe bending machines and accessories represent the best of engineering, manufacture and innovation. For many years there has been very little real choice of stand mounted conduit or copper pipe bender but this new range, featuring some much needed new ease of use features and unique accessories carries on the company tradition of innovation and continual product improvement whilst providing superb value for money. Bending machine is fabricated from 30mm square section tubing to provide a rock solid frame which more than stands up to the rigors of daily use. The frame is designed to give maximum stability, minimizing the risks of sideways movement or skidding across floors, making operation as easy and effective as possible. The formers, which are key to creating a perfect bend, are machined cast aluminum. This means they can provide a superior and highly accurate bend as the machined area provides a perfect profile to support the pipe and gives excellent contact and virtually no movement. By comparison, most other brands use non machined die casts. Included with all machines is a dual purpose stabilizing and extension bar. It can be used to give extra leverage when performing down-bends, or to give extra stability to up-bends by acting as a counter-lever. For electricians, the bar can also be used as a handy cable reel feed by simply securing it through holes in the vice mount, further adding to its versatility. When not in use the bar can be stored securely out of the way on the side of the machine. Another important development on this range of machines is the new design vice mount. Being more substantial than those of other brands, this vice mount offers added functionality. Perhaps most important is the ability of the company mount to accept a wide range of vices, including those of other leading manufacturers, thanks to the universal slots. These slots are also designed to allow the vice to be secured either flush with the edge of the mount or even to overhang, in order to provide clearance to make the threading of conduit much easier, no longer making the vice mount an obstacle to the threading equipment.

Yet another exclusive feature in this range comes in the form of the hexagonal drive featured on the universal and pipe bending machines. Using the optional hexagonal drive key, a power drill can be used to wind the inner shaft of the bending lever handle to quickly and effortlessly move the roller into position.

METAL BENDING MACHINE

For over half a century the company has been at the forefront of the manufacturing and distribution of metal forming machinery. By providing over fifty kinds of metal forming and cutting machinery, the company can effectively meet a range of customers' specific requirements. The company has obtained ISO 9001:2000 certifications, giving the added confidence that their sheet metal bending machines, as well as their selection of cutting equipment, meets with international standards in terms of quality and safety. In their years of operation, the company's commitment to honesty, integrity and quality has never wavered, and as such has produced a range of sheet metal bending machines that are unsurpassed in quality, capability, and reliability. These sheet metal bending machines offers precision and profile cutting for light alloys, ferrous materials and structural steel work. The choice of loaders and discharge units can be picked to suit the customer's requirements and typical uses, with maximum discharge lengths of up to 700 mm.
Specific requests by the customers are also answered by the company by adding extra features. Users can send questions regarding any item and they will be provided in-depth information about the product. The technical and sales representatives can be contacted. The customer service offers support both before and after the sale. The company's experience and expertise in the manufacturing of metal forming equipment allows them to create a sheet metal bending machines that provides efficiency in a range of applications and uses.
So the company is an international provider of quality bending machine. Proven industry leadership results in profitable solutions for the customers’ fabricating needs. The customer can rely on global experience, in-depth expertise, and unwavering commitment to his absolute satisfaction.
The company started in the industry selling quality tube and pipe bender as well as tubing notchers made in manufacturing.
Today that small tube benders and pipe notcher facility is much larger and the company has dozens of manufacturing sites worldwide with multiple distribution sites on different continents. There are many different product segments in metal bending machine as well as machine tools, comprised of hundreds of different models manufactured to the highest quality standards on the market, and sold at reasonable prices that are afforded by the small start ups as well as the large multi nationals.
The company offers hardworking equipment for hardworking people. The high-performance metal fabricating equipment is designed to stand up to all your tough jobs. Every product represents superior design, innovative technology, state-of-the-art features, and affordable quality.

CNC BENDER

The CNC bender can handle a wide variety of tube pipe sizes. This machine has a wide variety of applications, from consumer electronics and various tube/pipework used in ultracompact equipment to the largest machines found in plants, shipping, and nuclear power plants.
CNC Tube Bending adds a new level of speed and precision. The impact of CNC Bending increases as the complexity of the tubular part increases. CNC equipment automatically manipulates the tube in order to precisely position the various bends relative to each other. CNC Tube Bending is usually employed when a part contains more than two bends. Although it is suggested that all of the bends in a part are designed around the same bend radius, the CNC equipment has additional capabilities that allows mixing of bend radii in the same part.
Pipe bender has a wide range of optional software's and functional accessories, having total powers from designing manufacture of hardware/controller to molding dies.
Features in particular:
• Stable accuracy with durability
The mechanism is employed in benders for bending torque transmission, whilst chain-driving mechanism is standard to those of other brands which is doomed to tension looseness as the service is provided.
Mechanism is:
DOB motion stays free from hunting, and longer accuracy performance secured.
Reduced bending head size squeezes out larger bending space for 3D bending of complicated design.
• High machining accuracy
Thanks to the employment of "double-closed " servo driving system controlled by designed sophisticated micro computer LSI, mechanical behavior of positioning is very reliable and stable to maintain accuracy motion regardless of the level of hydraulic temperature, motion speed and backlash. Accuracy-check sequence is also implemented to monitor and apply necessary verification at every bending process all for stable quality bending.
Sturdy steel construction and precise computer controls give CNC bender the ability to create quality bends every time, even when your bending application requires complex or tight-radius bends.

The CNC Tube Benders equipment is capable of manipulating tube and pipe accurately and repeatable from small to large quantity runs.
One of the great benefits being your jobs program is kept on file in the machine so your next order is exactly the same as previously supplied.
It’s a semi- automated system to load and unload tube variants into and from the CNC bending machine.
The tubes are manually loaded into the tube carrier on the transfer chain at the load area. The transfer chain is indexed forward by the indexing cylinder sprocket until the tube is sensed in the unload position.
A pair of pneumatic rotating grippers are used to present the tube to the CNC bending machine. Upon cycle complete a second pair of grippers remove the tube and release it into a collection container.