News AP&T AB, Automation, Press and Tooling
Aug 29 2018
AP&T’s servo hydraulic press setting a new standard for hydraulic presses — more energy efficient, quicker and easier to maintain
Several innovative technical solutions have helped AP&T’s designers combine high performance with low operating costs. First and foremost, the hydraulic system’s control valves have been replaced by servo motors, which means that speed, position and press force are completely controlled electrically.
“The design has made it possible to limit the number of unique moving parts, cut down on oil volume, reduce pressure in the hydraulic system to a maximum of 250 bar and eliminate the effects of any variations in oil temperature. This lays the foundation for a very robust process with a high degree of availability and repeat accuracy, at the same time that the need for maintenance is substantially reduced,” says AP&T’s Product Manager Presses Patrik Haglund.
The servo motor solution has also streamlined energy consumption by between 40 and 70 percent, depending on the application. Heat loss generated by pressure valves can be avoided, and some servo motors are used as generators at retardation. The press’ cushion cylinder is also operated by servo motors which work as generators. Braking energy is distributed to the motors used for acceleration and forming through a kinetic storage system and a central direct current converter. Since the energy is stored internally in the press, it is not necessary to use electricity from the grid during peak loads, which results in a lower connection fee. Stored energy surpluses can also be restored to the grid.
The entire press process is monitored by a closed-loop system, which continuously controls the slide’s movements, quickly corrects any deviations and ensures speed and position with a great deal of precision. Not least, the system actively governs the slide’s parallelism in relation to the press table — a unique integrated function that contributes to both high forming precision and less wear on tooling.
“The acceleration and retardation speed is an impressive two to three times higher than that of a conventional hydraulic press, thus enabling extremely short cycle times. To maximize production capacity, the press can be synchronized with other servo-driven units for feeding and unloading,” says Patrik Haglund.
Low energy consumption, compact design, high production capacity and repeat accuracy in combination with low maintenance costs make AP&T’s servo hydraulic press a competitive alternative in several areas that have traditionally used mechanical presses.
AP&T’s servo hydraulic press — examples of suitable applications
Transfer solutions: High stroke frequency (SPM) compensates off-center loads and offers full synchronization.
Deep drawing and other cold forming: High degree of control accuracy, pre-acceleration of cushion, pulsating forming and major energy savings.
Forming of high-strength steel (AHSS): All forming in one step, reduced spring back, high forming forces on a small tooling area.
Hot forming of aluminum: Minimal energy consumption at long holding times and high force, short cycle time, high forming speed.
Press hardening: Minimal energy consumption at long holding times and high force, short cycle time, high forming speed.
Lead press in tandem lines: Short cycle time for the entire line, full synchronization, flexible power/stroke length through the entire press cycle.
Forming of composites and similar materials: Minimal energy consumption at long holding times and high force, ensured parallelism and flexible force patterns of the tool.
May 3 2018
Tooling development — growing area for AP&T
Company information AP&T AB, Automation, Press and Tooling
We achieve customer satisfaction and security by offering a high degree of availability and complete solutions for which we take full responsibility ? a concept we call One Responsible Partner®. We focus on production systems that give the finished parts properties that customers demand such as reduced weight, high level of safety and energy efficiency.
AP&T has sales and service representation in Europe, Asia, North America and South America. Our philosophy is, quite simply, to be where our customers are. Our global presence gives us more in-depth understanding of our customers? businesses, which means we can more easily satisfy their needs for complete solutions, products and services.
|Corporate capital||15,198,000 SEK|
|Type of company||Head Office|
AP&T - One Responsible Partner®
Making Metal Come Alive®
Key figures AP&T AB, Automation, Press and Tooling
Executives AP&T AB, Automation, Press and Tooling
Magnus Ragnar Baarman
CEO - Chief Executive Officer (VD)
Evert Michael Jonson
Magnus Ragnar Baarman
Bengt Alexander Dahl
Admin/Finance Director/Manager (Ekonomi)
Production Director/Manager (Produktion)
Personnel Director/Manager (Personal)
R & D Director/Manager (Forskning och Utveckling)
Customer Service Director/Manager (Kundtjänst)
Activities AP&T AB, Automation, Press and Tooling
- Service provider
- Industrial robot components, automated equipment accessories
- Metal presses, mechanical
- Metal heat treatment contractors
- Tools for chipless metal forming machine tools
- Metal presses, hydraulic
- Presses, hydraulic, counterblow, for metals
- Presses, hydraulic, automatic, for metals
- Presses, hydraulic, transfer, for metals
- Presses, hydraulic, computer controlled, for metals
- Presses, hydraulic, four column, for metals
- Presses, hydraulic, coining (stamping presses)
- Presses, hydraulic, blanking, for metals
- Presses, hydraulic, drawing or deep drawing
- Presses, hydraulic, punching, automatic, for metals
- Presses, hydraulic, metal tube or pipe working
- Presses, hydraulic, plate-working, for metals
- Presses, hydraulic, automotive applications, for metals
- Presses, hydraulic, to customer specification
- Components and accessories for metal presses
- Installation services for industrial equipment
- Maintenance and repair services for industrial equipment
- Automation systems and servomechanisms
- Heat treatment furnaces for metal