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MDA Technologies 3/2016

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MDA Technologies 3/2016

About Sumitomo Sumitomo

About Sumitomo Sumitomo (SHI) Cyclo Drive Germany is a subsidiary of Sumitomo Heavy Industries within the Power Transmission Control business segment, as is their sister company Hansen Industrial Transmissions. In 2014, Sumitomo Heavy Industries achieved an annual revenue of more than 6 billion US dollars. Under the umbrella brand of Sumitomo Drive Technologies, Sumitomo Heavy Industries is the market leader for drive technology in Japan and continues to expand its global presence and market share. As a result, Sumitomo (SHI) Cyclo Drive Germany GmbH has sales, service and production facilities in many European countries and subsidiaries in France, Great Britain, Italy, Spain, Scandinavia, and Turkey, as well as India since 2016. mission of torque takes place via a rolling motion, generating only minimal friction in comparison to zero backlash planetary gearboxes - accordingly, thermal loads are also much lower, thanks to reduced heat loss and increased efficiency. A further advantage of Cyclo gearboxes in machine tools is that there is no self-locking effect in these units. As a result, they can be run both forwards and backwards with high precision, after surpassing a defined breakaway torque. This detail enhances 01 Two-stage UA-series for high gear ratios and uniform motion repeat accuracy, especially in reversing applications. „Rotary“ and „tilting“ tables in machine tools are an example of this. These units tend to have comparably high stiffness and torque requirements for purposes of material guidance. Rotary tables and tilting tables position the clamped workpiece to a machining spindle that operates predominantly in a vertical direction. The same applies to this process as to the disc magazines. The stiffer the tilting table holds its position and the more it follows a curve in the form of a coordinated path, the better the end result of the machining process. Every burr and chatter mark has time-consuming consequences — and thereby limits productivity. The Fine Cyclo gearboxes by Sumitomo Drive Technologies pave the way for fast machining processes, because the gearboxes allow high feed forces without evasive movement, thanks to their high stability. Both these advantages have a direct effect on repeat accuracy - a property that is important in machine tools, especially in turrets. The tables carry different tools and always position them in exactly the same place, for the purpose of drilling exactly perpendicular holes, for example. The tool is then replaced with another, which is drilled in turn. Individually tailored gearboxes for specific applications The examples listed above show that machine tool design always comes down to one thing: individually tailored drive solutions, based on a standard modular product concept. For gearbox manufacturers like Sumitomo Drive Technologies, the natural 02 The new Fine Cyclo Drive. Highly compact precision drive with large hollow shaft conclusion is that special solutions and unconventional requests can be realised as economically as possible. As a result, the company, whose European headquarters are in Markt Indersdorf near Munich, is increasingly becoming a development partner for manufacturers of machine tools. In addition to its assembly plant, the Markt Indersdorf site also has research and development facilities that enable customer-specific projects to be precisely tailored customer requirements. „We begin working with customers as early as the initial design phase — with the aim of creating a highly integrated solution that will later become a unique selling point to enhance the customer‘s competitiveness. This helps our customers save both development capacity and production costs during the production of the machine series“, remarks Peter Köhler, Senior Manager of the EMEA Sales Service (MCD) at Sumitomo (SHI) Cyclo Drive Germany GmbH. Against this background, the company will now place even more focus on developing complete drives as plug & play solutions and delivering them in ready-to-install condition, including the servo motor. To ensure a constant ready supply, there are three international plants for precision gearboxes in Germany, Japan and China. The possibilities of cycloid gearbox technology are generally considered to be so broad that even unconventional specifications can be realised, such as large hollow shafts or the use of input and output on the same side of the gearbox. Photographs: teaser Fotolia, 01 to 03 Sumitomo www.sumitomodrive.com 03 Sectional view of C-Series. Large hollow shaft, lubricated for life and completely sealed MDA Technologies 3/2016

DESIGNING HYDRAULICS MORE EFFICIENTLY CONSIDERABLE POTENTIALS The reduction of energy consumption is a declared aim of the European Union: The EU Member States want to reduce their primary energy usage by 20 % by the year 2020. In addition in 2011 the international standard ISO 50001 was introduced, the first standard valid worldwide for the certification of energy management systems. Pumps are amongst the largest industrial users of electrical energy. With reference to a pump’s life-cycle, the costs of energy are on average around 45 % of overall costs. And so at this point a considerable potential for savings exists, if we can reduce power consumption. REDUCTION OF UP TO 70 % The overwhelming majority of hydraulic power units in use today are operated by a motor and pump running at a constant speed. Pressure and volume flow rate are regulated in this case via hydraulic valves. This basic solution has been tried and tested in the market place and is convenient by way of comparison in procurement – on the other hand however this has relatively high energy costs. For a relatively small investment, variable-speed pump drives quickly make high savings in energy costs possible for hydraulic power units. In practice, a reduction in energy consumption of up to 70 per cent has already been achieved. DRIVE TECHNOLOGY About Eaton Eaton is a power management company with 2015 sales of USD 20.9 billion. Eaton provides energy-efficient solutions that help its customers to manage electrical, hydraulic and mechanical power more efficiently, safely and sustainably. Eaton employs around 96,000 people and supplies customers in over 175 countries. MDA Technologies 3/2016