INNOVATION Net prices, valid until. 07. 08 GARANT C THE NEW STRATEGY FOR VERY HIGH RODUCTIVITY. The newly developed GARANT solid carbide barrel milling cutters reduce process times and increase surface quality.
GARANT ball nose slot drilling / arabolic erformance Cutting www.hoffmann-group.com C arabolic erformance Cutting dynamic 5-axis milling REDUCE ROCESS TIMES AND INCREASE SURFACE QUALITY Solid carbide ball nose slot drills Conventional machining strategy 5 7 Solid carbide ball nose slot drill, D c = r = 8 9 0 Stepover b r (arc segment) Radius r Small stepover -> Long machining cycle times for high surface qualities.
Net prices, valid until. 07. 08 INNOVATION A new type of machining strategy Advantages of the C process: C conical shape No. 0 750 /500 D c = R w = 500 ɾ Shorter machining times due to the large stepover. ɾ Lower set-up costs. ɾ Minimises stock holding by offering general-purpose milling cutters. ɾ Higher surface qualities at shorter cycle times. ɾ Outstanding process reliability. ɾ Extreme wear resistance. ɾ Increased productivity. Stepover b r (arc segment) Effective radius R w Large arc segments -> Short machining times. Increase the surface qualities.
GARANT ball nose slot drilling / arabolic erformance Cutting www.hoffmann-group.com C milling ARABOLIC ERFORMANCE CUTTING RODUCTIVITY ADVANTAGE GUARANTEED The C milling process represents a further development of ball nose slot drilling. The main application are finishing operations of complex free-form surfaces and complicated components in general machine tool building, tool and mould making. The benefits for you: ɾ Shorter production times combined with better surface quality. ɾ Less stress on component, tool and machine. C tools are also used where very high surface quality is required for instance for press tools, in order to minimise subsequent polishing operations. C cutters are also referred to as barrel since the effective radius R w is markedly larger (for the same tool diameter D c ). This leads to two major advantages: Better surface quality: The larger radius shown on the tool (in comparison to ball nose slot drills) increases the surface quality. Larger stepover: The same surface quality (as is delivered by a ball nose slot drill) can be achieved with a much larger stepover. VIDEO Experience solid carbide barrel milling cutters: www.ho7.eu/c-en The efficient use of C tools requires the use of suitable CAD-CAM software which can process the tool geometry in the data model.
Net prices, valid until. 07. 08 INNOVATION Comparative example between a ball nose slot drill and a C milling cutter with diameter D =. The ball nose slot drill used had a ball radius r =, the C milling cutter operated with an effective radius R w = 500. This effective radius takes the form or a section of the tool cutting edge, so that it can be used by inclining/positioning the milling cutter during the machining process. Thus the effective radius is much larger, which enables a higher value for the stepover in C milling. Ball nose slot drill Barrel milling cutter, b r = 0.5 r = b r =.7 R w = 500 b r b r Workpiece Workpiece R th =.5 µm R th =.5 µm C milling with a barrel milling cutter enables a stepover b r 9 times greater than with a ball nose slot drill, whilst achieving the same surface quality. Ball nose slot drill Barrel milling cutter, b r = r = b r = R w = 500 b r b r Workpiece Workpiece R th =.5 µm R th =.5 µm The C process with a barrel milling cutter guarantees a surface quality about 80 times better than with a ball nose slot drill, at the same stepover b r. 5
GARANT ball nose slot drilling / arabolic erformance Cutting www.hoffmann-group.com Application options MILLING CUTTER FORMS Solid carbide C barrel straight form End face For freely accessible surfaces, without obstructive contours. Solid carbide C barrel End face For surfaces with obstructive contours, and for large areas. Due to their special end face geometry, these are also ideal for initial preparation. ermits with largest R w. Solid carbide C barrel tangential form End face For deep cavities that are difficult to access. Due to their special end face geometry, these are also ideal for initial preparation. For tangential and conical barrel milling cutters: The end face geometry is designed so that the chips, especially those formed by the end radius, are of optimum shape and have optimum evacuation characteristics. For this purpose the number of cutting edges is reduced to the number of effective end face cutting edges.
INNOVATION Net prices, valid until. 07. 08 Solid carbide Standard Type N h DIN ae 0,05 D ae 0,05 D 55 HA f8 0 C C High-performance tool for exceptionally efficient finish machining of free-form surfaces. For outstanding surface qualities in a very short machining time. For use on modern 5-axis milling machines with CAD / CAM support. Note: RW represents the effective radius on the tool. Suitable for/ vc [m/min] ISO code 0 7500 75 0 7550 759 N N 00 00 N 00 00 50 00 80 50 0 H H H H M 0 50 M 0 0 S 0 70 S 0 K 00 straight form 5 0 750 0 750 f8 Dc / Rw straight form C.5 7. 0/0 /70 Ls RW RS L D Ltot.5 0 70 0 8 0 7 8 0.0 0.07 0 0.08 0.09 tangential form 0 755 0 755 f8 Dc / Rw tangential form C 8.8.5 7. /00 0/ /85 Ls RW RS Ltot 0.5.5 7 00 85 80 9 0.0 0.0 0.07 0 0.05 0.08 0.09 α/ 0 750 0 75 α/ = 8 0 750 α/ = 9 f8 Dc / Rw 0 755 0 75 α/ = 7 C 0 755 α/ = 9 0 757 α/ = 8 8.9 f8 Dc / Rw 8.8 7. 8.9 7. /50 /500 /000 88.0 88.0 0.87 0 750 0 75.5 0 75 8.5 50 500 000 RS 0 750 0 75 Ltot 0 75 0.5 0 0.0 0.07 0.09 0.05 0.09 0. 0.05 0.05 0.0 0.080 0 759 α/ = 7 C /500 /000 RW Ls 0.87 RW Ls 0 755 0 759.5 0 757.5 500 000 RS 0 755 0 759 Ltot 0 757 7
NATURE SHOWS US WONDERFUL CLAMING CONCETS. NOW WE OFFER THEM FOR YOUR RODUCTION SYSTEMS. Model: GARANT Xpent 5-axis vice Also applicable in the world of tools: perfection will prevail. As a premium brand, GARANT is a byword for the concentrated manufacturing competence of the Hoffmann Group. More than 0,000 efficient and powerful, high-performance tools for all areas of application provide the highest levels of innovation, constant premium quality and an optimum benefit-price ratio. Discover this for yourself: www.garant-tools.com This advertising brochure, its graphic layout and the item numbering system used are protected by copyright. Reprinting and reproduction of any kind even as extracts is permitted only with the written authorisation of Hoffmann GmbH Qualitätswerkzeuge, 8 Munich, Germany. All prices are net catalogue prices, valid until. 07. 08; prices in without guarantee. We reserve the right to correct errors and make changes. Hoffmann GmbH Herbert-Ludwig-Straße D-88 Achim Order by phone: + (0) 870-7 Order by fax: + (0) 870-7 Order by E-Mail: ab.uk@hoffmann-group.com www.hoffmann-group.com 0585-en-UK KW77 EN