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MDA Technologies 5/2014

MDA Technologies 5/2014

machine elements 03 The

machine elements 03 The inhouse electroplating plant is one of Europe‘s most modern plants and is specially designed for the various internal coating process stages – a degree of specialisation that would have been impossible with outsourcing 04 Compared to conventional processes, VOSS Fluid has optimised its electro-plating process with regard to component damage prevention, layer distribution, visual appearance and coefficient of friction a minimum and prevent process-related damage. A considerably shortened coating process time is also gentler to the material. To be economical with resources during production, the entire electroplating process is monitored and controlled by on-line analysis systems. Automatic dosing pumps ensure that only the right amount of chemicals needed for the specific product treatment are added to the baths. This keeps bath concentrations stable and within specified process limits. The bath contents are kept constantly in motion in order to distribute the chemicals evenly. After electro plating, the coating thickness and the nickel addition rate of every production batch are checked. As has been proven, the articles are in this way given an even Voss coat surface finish and are durably protected against corrosion. Since 2013, an experimental electroplating plant has also been in operation, where the entire electroplating process is modelled in miniature, allowing simulation of production parameter changes in a resource-saving manner. Apart from the further development of Voss coat, this plant is also used to optimise internal processes in terms of efficiency and sustainability. Users therefore benefit from a future-proof surface coating and customised system solutions. Quality from A to Z The quality of the products, the accuracy of their dimensions and process reliability depend not only on the electroplating process. Ensuring high product standards, starts with the choice of materials, which are only purchased from audited supplier partners. For instance, the incominggoods inspection determines the material composition by spectral analysis, optical profile projector, contour measuring device or a surface roughness measuring device is used to determine the product geometry. This department also tests material hardness and the properties of the elastomers used for example for the seals. Another special inspection on suitability for machining is carried out on all articles in order to ensure constant high product quality. Each production lot is monitored by statistical process control (SPC) – both during machining operations and electroplating. Machine tool wear is continuously monitored during machining processes. Process reliability of hydraulic systems in mobile and stationary machinery depends on choosing the tube connection technology which is most suitable for the respective application, its corrosion resistance, correct assembly and installation. Voss Fluid GmbH lays the foundation to success with its consulting competence and applications knowhow. This results in machinery with a long service life and economical hydraulic systems that can be assembled using reliable processes. Photographs: VOSS Fluid GmbH www.voss-fluid.com Company name: Voss Fluid Established: 1931 Headquarters: Wipperfürth, Germany Turnover: € 106 m (2013) Employees: 400 Products: tube couplings, valves, flanges, … About 46 MDA Technologies 5/2014

Product News Cooling system for an energy-saving motor concept Bosch Rexroth has developed a smart cooling for diesel electrical locomotives with multi-motor drive system. The energy-efficient solution has been developed in coordination with a large manufacturer of rail-bound vehicles. To meet the EU exhaust standard Stage IIIB, the customer of Bosch Rexroth replaced the large diesel engines common in long-distance locomotives by four smaller models from large-series production. The individual diesel engines switch on and off on demand. For this, the cooling system had to include a higher energy density. The ventilation drives based on sensor data must also provide demandoriented cooling output at all times. The cooling system developed by Bosch Rexroth works with a combination of hydrostatic and electrical ventilator drives and an adjusted control. The latter is based on Rexroth solutions for mobile work machines and has been adjusted to railways technology. Sensors record the temperatures of motor and generator cooling water, charging air and hydraulic oil to determine the required cooling output. Integrated additional functions adjust the ventilator speed to demand. Cooling of the flow inverter is achieved by additional electrical ventilation drives. www.boschrexroth.com Hydraulic cylinder simplifies machine construction Parker Hannifin presents new hydraulic cylinders with perfect position recording, which increase the productivity of applications while also minimizing the cost of installation and maintenance. The Intellinder cylinders are robust solutions for all initial equipper applications that require precise recording of the piston rod position of the hydraulic cylinder. Typical applications for the new technology include vehicles and devices of the construction industry, as well as agriculture and forestry. The Intellinder supports functions such as electronic dampening, load monitoring and automatic load holding and positioning devices. The hydraulic cylinders are available with piston rod diameters of 25 to 127 mm and without limitation of the piston size. Stroke lengths up to 2.4 m are available by default, larger ones on request. The sensor is integrated into the cylinder head to read a pattern applied to a piston rod with a resolution of 0.03 mm. Then the signal is processed by the sensor electronics and transmitted to the control system via a CAN bus. The connection of Intellinder with a control, e.g. vehicle automation system IQAN, permits initial equippers to implement a complete drive and control system for mobile applications. www.parker.com New electrohydraulic linear drive Parker Hannifin has developed an electrohydraulic linear drive with the Compact EHA. Because of its high performance, density, speed and longevity, it is perfect for narrow installation spaces, mobile applications and remote activation. Introduction of the Compact EHA of the second generation offers expanded assembly options and the possibility of a manual release function, which gives the constructor more freedom and the user more safety. The Compact EHA is a self-enclosed doubly-acting actuator that works with stroke speeds of up to 84 mm/s, making it a robust and maintenance-free alternative for conventional hydraulic, electromechanical and pneumatic systems in all military and industrial applications, aviation and aerospace, marine and construction. The design of the Compact EHA integrates all components in a stable and compact monoblock housing of anodized aluminum. The new linear drive can be used at operating temperatures between -34 and +65 °C. www.parker.com 2/2- and 3/2-directional valves with different assembly options SMC Pneumatik has optimized the mechanically actuated 2/2- and 3/2-directional valves of the VM 100/200 series. The series, with its new white housing, is constructed lightly for cost-saving operation and needs only a small installation space. The series is flexible due to its new installation options – now four in total: assembly with attachment element, assembly at the bottom, lateral assembly and control panel installation. It also offers two line connection options (side and bottom) and a wide range of actuation elements (mechanical and manual), which can be easily exchanged. Pushbuttons and dial switches are available in four colors to simplify visual control and make it easier to tell apart the functions of the individual compressed air lines. A pressure display also permits simple verification of maintenance. Since the assembly dimensions are the same, the new VM 100/200 series can be swapped with the predecessor model. www.smc.eu MDA Technologies 5/2014 47

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