911 Каталог HOFFMANN GROUP 2016 Станочный режущий и вспомогательный инструмент Вер. 47 Стр.911

Каталог HOFFMANN GROUP 2016 Режущий инструмент и оснастка Стр. 911 0911 ENG Lab2u

Hoffmann Group 47 Vacuum clamping technology What is vacuum clamping A vacuum is produced under the workpiece to be clamped so that the workpiece is clamped to the clamping plate by the pressure differential. The surface structure, the size of the workpiece, and the pressure differential are crucial for the clamping force/ movement resistance force of the workpiece. Virtually all surface geometries of varying materials, including films and porous materials, can be securely clamped using the vacuum technology. Vacuum clamping technology is suitable for milling, grinding, turning, inspecting, measuring, coating, laser cutting, polishing, drilling, deburring, engraving, and assembly. Highly accurate clamping, the avoidance of damage, and the automation of production require new clamping systems. Advantages of vacuum clamping: Clamping of pressure-sensitive workpieces, therefore no damage or distortion to the component. Clamping of very thin sheets or films. S-face machining in a single clamping. No vibration during machining. Reduced clamping times due to quick clamp/quick release process (< 1 second). Can be adapted to the GARANT ZeroClamp zero point clamping system. Non-magnetic materials can be clamped. Which is the right vacuum clamping system Different materials and machining processes require the correct choice of the vacuum clamping system. Please contact our technical advisors if you require further assistance. An overview of various systems for secure damping of your components Modular grid Patented Slit Micro-porous vacuum plates Vac-Mat system vacuum plates vacuum plates For heavy-duty machining of simple-shaped workpieces with rough surfaces. Grid vacuum plates of high-tensile aluminium or steel. Sealing cords compensate minor surface irregularities and bulges. Special shapes and sizes available in all dimensions. Grid spacing dependent on workpiece contour and size. High damping forces, universal application, secure damping of unmachined workpiece surfaces, since the damping face has a high coefficient of friction. A wide spectrum of shapes of workpieces can be clamped. Thin soft re-usable plastic mats with vacuum holes, suckers in various sizes , with elastic lips on the upper face and fine holes in the centre. High clamping forces, clamping faces with high coefficient of friction. Milling of external and internal contours can be performed, yielding precise and clean burr-ffee cut edges on the workpiece. No scratching of surfaces, therefore suitable for sensitive materials. Significantly reduced set-up times when changing over workpieces. Clamping surfaces are provided with slits. Clamping is achieved using rubber adapter mats or covering films, which are laid between the workpiece and vacuum plate. It is then laid on the surface of the vacuum slit plate and suction is applied to it and to the workpiece. The outstand ing coefficient of friction offers good resistance to the movement forces that arise during machining. Preferable for thin-walled, fine or soft workpieces such as paper, film, circuit boards, metal strips, lenses, rubber. Also suitable for measurement and inspection processes in the micrometre or nanometre range, for precision machining and in silicon wafer production. Depending on the application , the damping surfaces can consist of permeable sintered bronze, ceramic or porous aluminium. The special characteristics of METAPOR open up a wide variety of application fields and new types of solutions to problems. No deformation of the workpieces. The selection criterion for vacuum power units and pumps is the size of the clamping area. Camping face Suction power Available system for creating vacuum 5m3/h Vacuum pump 10m3/h Vacuum pump Vacuum power unit 16m3/h Vacuum pump Vacuum power unit <1.0 in2. 21 m3/h Vacuum pump Vacuum power unit Water ring pump 63 m3/h Vacuum pump Vacuum power unit Water ring pump 100 m3/h Vacuum pump Vacuum power unit Water ring pump Witte VAC-MAT 1 Number of mats j Required suction power I 1 3-6mJ/h 28 16-21 m3/h 2 20 40 63 m3/h >50 100-160 m3/h 911