Tools feature magnetic safety system

Mate has expanded its press-brake tooling line with the introduction of American Precision Style tools featuring the new patent-pending Maglock magnetic safety system. Compatible with press-brake laser and optical safety systems, this full line of punches and dies is designed for press brakes configured with American-style holders and available in lengths from ½” to 18”.

Maglock uses rare-earth magnets to attach and seat the punch to the holder with no separation between the surfaces. The magnets are specifically and proportionally added along the punch shoulder so that the ‘up force’ of the magnet is localised and directed at the contact surface of the punch holder.
Safe and reliable, installation of a Maglock punch always results in the shoulder seating on to the holder, says Mate. The strong yet balanced Maglock connection is also said to simplify lateral (left or right) position adjustments. Once the punches are seated in the desired position, the holder clamping system must be engaged. Maglock does not claim to be and is not intended to be a replacement for the holder clamping system.
Unlike punches with mechanical designs (buttons, springs or pins) that become unsafe to use if the mechanism is damaged or missing, Maglock’s non-mechanical concept works safely all the time. Mate punches with Maglock offer additional safety if electrical, hydraulic or pneumatic power to the brake is cut off or damaged. In lengths over 4”, the design includes a lever to facilitate punch removal.
The reversible/symmetrical punch tang design enables the punch to be installed facing forward or backward.
For further information www.mate.com

Sharpe takes 7th Unison tube bender

Continuing investment in versatile all-electric tube bending machinery from UK-based Unison is boosting operations at tube and pipe fabrication specialist, Sharpe Products of Wisconsin, US. Sharpe recently invested in its 7th Unison tube bender to give the company an edge in meeting the ever-changing demands of the tube- and pipe-jobbing business.

Most customers no longer want to invest in stock, and batch sizes have reduced dramatically. These trends mean that machine set-up times become a major factor in job pricing. Any scrap generated during set-up – which can often run into several pieces when using older hydraulically-actuated bending machines – also negatively impacts job costs.
The first Unison machine bought by Sharpe Products was the Breeze 3” tube bender, and since that moment, the company has been a loyal Unison customer. Sharpe’s latest purchase is a Breeze 3” multi-stack, CNC-controlled, three-axis pipe-bending machine with a capacity of up to 3” or 80 mm diameter tubes. This machine has the ability to hold several tools for multi-radius parts or reduce tool changeover times, and is fitted with high torque servomotors to accommodate challenging materials. Also featured is a swing-away wiper-die servo axis to enable short, final straight part designs to be manufactured without post-bend trimming operations.
“Unison’s pipe benders are extremely reliable machines with innovative control technology and robust mechanical designs that help us to continually meet the demands of our customers,” says Paul Krickeberg, president at Sharpe Products. “On top of the great machines, they have great people providing great service and support. Unison offers the complete package.”
For further information www.unisonltd.com

Electric sheet lifters for press brakes

Gasparini has introduced its new press-brake electric sheet lifters, which are completely controlled by the CNC. The lifters are available in single- or dual-axis versions, with optional interpolation for better sheet tracking and support.

In dual interpolated axis configuration, the device continuously follows the part during bending, reducing the risk of scratches and counterbends. A counterbend can occur during the bending of very large, heavy or thin plate. The overhang generates a torque that makes the sheet bend around the die edge under its own weight. To overcome this issue, the sheet lifter supports the plate during the entire bending cycle.
An optional optimisation of the bending process consists of raising the ram before lowering the sheet lifter. This operation avoids, in case of a U-shaped bend, the return flange getting caught on the punch. When the ram goes up, the plate is lifted and then falls down, with potential damage to the part, tools and operators.
Sheet lifters are available in two sizes, providing a torque of 600 or 1200 Nm for the largest and heaviest sheets. Parts that needed two operators, can now be bent by just one person, in complete safety and without physical strain. In many cases, the use of forklfts and overhead travelling cranes may also be reduced.
Extended stroke allows bending angles as closed as 70° to be achieved. Height can be adjusted from -30 to +170 mm, to match dies with openings as wide as 100 to 160 mm. The resting surface is equipped with ball transfers and allows the installation of several options such as brushes, anti-scratch cladding, rulers, adjustable stops and telescopic extensions.
For further information www.gasparini.it

Why invest in custom press brake tooling?

According to Wilson Tool, deciding whether or not to invest in special tooling for a particular job is likely to give any fabricator food for thought.

While it’s true that custom press-brake tooling can be more expensive and may require a bit more lead-time than standard tooling, there are also significant benefits over standard tool sets. For instance, custom press-brake tooling makes it possible to solve challenging bending and forming applications while reducing material handling, minimising set-up time and improving the quality of parts.
Working with a tooling manufacturer to determine the best way to form a part can result in a positive ROI in terms of increased productivity and fewer reject parts. Whether faced with a unique part design, the need to simplify a complex bend or improve press brake performance, tooling manufacturers have the experience and knowledge to help shops determine the best way to make a part.
Tooling manufacturers also understand there is more to improving press brake performance than simply reducing the amount of time or number of strokes it takes to form a part. For example, consider the process of forming a channel. With a standard punch and die set, forming a channel requires two strokes of the machine. In contrast, using a custom channel tool, it is possible to produce two bends in one stroke. While certainly reducing the amount of time it takes to produce a part, the added benefit of choosing a channel tool set is the consistency gained in the finished component. As the part is now produced in a single stroke, it only needs to be gauged or located once rather than twice. After all, every time a component needs to be repositioned, re-gauged or relocated is an opportunity for something to go wrong, increasing the likelihood of producing a reject part.
For further information www.wilsontool.com

Latest bending innovations from Prima

A number of new technologies and solutions by Prima Power had their world premiere at the Blechexpo in Germany last November, including the company’s LPBB (Laser cutting – Punching – Buffering – Bending) manufacturing line. The LPBB features fibre-laser cutting, punching and automatic bending enhanced with LSR loading and stacking robot technology.

Prima Power’s EBe5-3 included in the LPBB system is an automatic servo-electric bending machine with a maximum bending length of 2750 mm. The machine is equipped with PCD picking and centring device, BTD bend-turning device, a single wagon for standard pallet with new part-stacking function, and a new lifting door designed to reduce the machine footprint. Among main innovations, Tulus HMI software presents optimised tool change, a monitoring view function to follow the process flow step by step, as well as a new interpolation function that generates new angle correction parameters to bend parts with thicknesses and bending lengths that do not correspond to the values saved in the database.
Also on show was the eP-1030 servo-electric press brake, which is now available with the new version of the bending follower option, allowing simpler and faster positioning of big and heavy parts that cannot be handled by a single operator. The eP-press can also be equipped with a flattening table to increase productivity and facilitate the operation. Wila-style upper and lower hydraulic tool clamping by Prima Power and an Iris Plus device for the real-time correction of angles complete the machine.
For further information www.primapower.com