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www.us-tech.com
September, 2017
Flexible Industrial PC Production with SEHO Selective Soldering
By Heike Schlessmann, Marketing Manager, SEHO Systems I
n 1983, Siemens Karlsruhe began manufactur- ing augmented standard PC technology to meet its customers’ demanding industrial require- ments. The operation has grown to become a 4,500-employee operation, the fifth-largest Siemens AG location in Germany. Optimized production steps carefully govern product quality at the plant, which contains the com- pany’s process industries and drives division, with process control and automation the focus of the site.
Siemens industrial PCs (IPCs) have been fixtures in industrial applications for more than 30 years. The company manufac- tures around 24,000 different products in Karlsruhe, including flat components for other sites. In addition to products for indus- trial communication, such as network and identification components, the plant focuses on developing and manufacturing the SIMATIC range of products. Siemens SIMATIC controllers, process control systems and industrial PCs are designed with automation solutions that help customers imple- ment a diverse array of applications efficiently and economically.
All Eyes Ahead
The words “Meet the future in Karlsruhe” greet visitors at the entrance to the manufacturing complex. Produced inside are the well-known SIMATIC industrial PCs, manufactured by state- of-the-art methods, focusing on maximum flexibil-
ity and short cycle times.
“We manufacture on a build-to-order basis,” explains Josef Kühn, a planner and designer in the
to absorb daily fluctuations.”
To fulfill individual customer requirements, Siemens uses an “island” (cellular) manufacturing method. In addition to the ability to cost-effec- tively produce small lot sizes, this island pro- duction approach largely eliminates process- related wait times. The basic prerequisite for flexible manufacturing cells is the flexibility of the individual production machines within each cell. “We ensure this flexibility by using selective soldering units from SEHO,” says Kühn. A number of the manufacturing cells employ multiple GoSelective, PowerSelective and SelectLine systems from SEHO. “We pro- duce 232 different types of flat components for industrial PCs, 136 of those with SEHO solder- ing systems.”
Versatile Soldering
Josef Kühn, Siemens AG technology planner (left) with Alexander Blum, SEHO GmbH product manager (right) with SEHO’s SelectLine selective soldering system.
technology department of Siemens Karlsruhe, responsible for the facility’s selective soldering processes. Kühn has been with the company since 1981 and is well-versed in the company’s technology. “A configurator supports the customer in select- ing a processor, memory size or extension cards, and lets the customer order industrial PC products in any quantity, as low as one piece,” says Kühn. “Our stan- dard delivery time of 15 days means that our manu- facturing process must be absolutely flexible and able
The most recently installed manufac- turing cell for industrial PCs combines a SEHO SelectLine with a PowerSelective sys- tem, plus assembly workstations and auto- matic handling systems from the SEHO Streamline range. A total of four assembly work- stations include manual component assembly. The intelligent design starts with component storage. “While the assembly takes place at the worksta- tion, the rear of the unit allows us to prepare for the next product version,” explains Kühn. “We sim- ply turn the component storage around and get started on the next job. This saves a lot of time.” Continued on page 67
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