When the management at Toyota's engine and power transmission manufacturing plant in Wałbrzych, Poland, looked to increase the availability of its production lines and improve the transparency of data, it faced the challenge of not only ensuring the implemented network would offer the necessary performance, but also of integrating multiple devices from a range of different vendors. It met these challenges by implementing open gigabit CC-Link IE technology, the industrial Ethernet technology with the greatest bandwidth.
The automotive industry has often led the way in innovation, in particular factory automation. For example, the automotive orders in North America represent 53% or more of the total robot shipments. In order for automated robotic operations to perform as effectively as possible, it is necessary to set up high-performance industrial communications networks and technologies that support accurate, high speed activities.
Toyota decided to invest in an innovative Ethernet technology to support data sharing at one of its engine and power transmission manufacturing plants.
Spread across two sites in south-western Poland at Wałbrzych and Jelcz-Laskowice, Toyota Motor Manufacturing Poland (TMMP) represents Toyota's biggest engine and transmission manufacturing operation in Europe. While the larger engines in the Toyota range are produced at the Jelcz-Laskowice, with a capacity of 180,000 units per year, the bulk of the engine production, as well as the manufacture of power transmission products, takes place at the Wałbrzych plant.
Built in 1999, the Wałbrzych plant began production in April 2002, and today produces more than 633,000 units per year, with a capacity of more than one million units when running three shifts. The plant's output includes the 1L petrol engine for the Toyota Aygo and shared platform vehicles from Citroen and Peugeot, as well as forged parts. These include crankshafts and connecting rods to supply Toyota Manufacturing UK (TMUK), where the engines for the Avensis and Auris are manufactured, plus, gear blanks and forged sleeves to supply Toyota's plant in India.
With a total site area of 520,000 square meters, including a plant floor area of some 100,000 square meters, the Wałbrzych plant includes engine assembly lines and forging lines. When the lines were built, the communications requirements were quite simple. However, an increasing need to extract greater volumes of data in order to better monitor the manufacturing processes had led the company to reassess its networking requirements, with the idea of upgrading network systems in both the engine assembly area and forging area.
Forging line upgrade
Within the forging lines, the network upgrade requirements were just as extensive, as Manufacturing Engineering Manager for TMMP Damian Mroziński, explains: "There are nine forging lines, each with a number of different machines. The largest of which is a 5,500-ton press that was originally designed separately, with only basic data transfer between each machine. But we wanted the capability to transfer increased volumes of data between the various machines, so looked at an appropriate network choice to connect the various machine controllers."
CC-Link IE (Industrial Ethernet) and CC-Link fieldbus proved the obvious choices. "We opted for CC-Link technologies because they are so easy to implement," Mroziński says. "In all, we integrated 13 stations, with CC-Link IE providing the communications from machine to machine, and CC-Link providing data transfer between each machine and its subsystems, such as our FANUC robots. Despite the seeming complexity of the requirement, we completed the whole installation during our two weeks of scheduled annual shutdown."
