CNC 235 / CNC 245 Hard Machining Center DVS Group. Advanced German Engineering unified in one group.
Buderus Schleiftechnik is one of the globally leading specialists in hard machining of rotation-syetric parts for example in the aerospace and automobile industry. 2
Buderus Schleiftechnik GmbH Buderus Schleiftechnik a name for core competence in internal, external and thread grinding. Buderus Schleiftechnik is one of the globally leading specialists in hard machining of rotation-syetric parts. Together advantages recognized and adopted For the process steps of one production line only one contact for turning, gear cutting and grinding. The CNC 235 is one version of the machine line N1 which is a jointly development of the DVS group. The group members use appropriate subassemblies for your own customized machine solution. The right partner With CNC-controlled machine tools and grinding centres Buderus Schleiftechnik is your competent partner for the machining of precision parts in high batch and make-toorder production. Each of the tailor-made solutions from Buderus Schleiftechnik is characterized by know-how and competence. Qualified employees ensure highest product quality. Counication is important. Customer requirements are our benchmark The philosophy of complete machining in one chucking and the strict orientation towards customer demands have led to compact machines designed in a modular construction system which offers the highest degree of flexibility. These are used wherever complex machining operations have to be executed within the shortest cycle times and where smallest shape and positional tolerances are required. In the automotive industry, the tool industry, the ball screw production and in aerospace technology worldwide. Customer advantage of synergy effects Reduced training effort and cost Advantages for service and maintenance Coordinated interlinking and loading 3 Buderus CNC 235 / CNC 245 Hard Machining Centre
Hard machining centre CNC 235 / CNC 245 With the hard machining centres CNC 235 and CNC 245 two model ranges are available in two sizes, for the processes OD grinding, ID grinding and (hard) Turning in one machine. Thus, components can be completely finished in just one clamping. The machine can be used in its various automation stages both for small series as a flexible machine as well as for large series as a highly productive machine. Simultaneous machining Apart from sequential machining, the machine can also be fitted for simultaneous machining. We talk about simultaneous machining when several tools are working simultaneously on one component or several components are being machined simultaneously. In the case of the CNC 235 and CNC 245, both the variants are possible. Two additional axes below the grinding spindles allow e.g. simultaneous external and internal grinding. The simultaneous machining of two components can be achieved by the deployment of two main spindles in one machine. The handling of the parts takes place according to the proven Pick-Up principle. This means that the machine axes are used, to pick up the component with the vertical work spindle directly from the conveyor. This saves additional axis for the loading. Optional upgrating But if required additional axis are at disposal, for example for loading/unloading the post process measuring station. Also turn-over stations to machine the part from both sides. Adaptation to your requirement Nonetheless, additional handling axes, e.g. for loading and unloading of an external measuring station, can be used. A rotating station for machining the parts from two sides is optionally possible. All in all, both model ranges combine flexibility as well as productivity through maximum utilization of modular construction. As a result, the machine can be customized particularly for your application and your component. With the large number of possible variants, your machine will surely also be included. Ask us! The Hard machining centre CNC 235 / CNC 245 equipped for a sequential and simultaneous machining 4
Hard machining centre CNC 235 / CNC 245 no re-clamping errors owing to complete machining high productivity owing to simultaneous machining high flexibility owing to modular construction different automation concepts high work piece accuracy and concentricity accuracy reduction of the cycle time by up to 50% customized solutions reduction of the auxiliary time 5 Buderus CNC 235 / CNC 245 Hard Machining Centre
Modules at the center of attention The application of compact and modular machines with maximum flexibility is multifarious: in automotive industry, tool industry, aviation and aerospace technology. According to the Pick-Up principle, the work piece performs all the movements. The machine can have up to 4 cross slides depending on the complexity of the requirement. The work piece load and unloading can be variable by conveyors on all sides of the machine. In combination with additional handling axes is the loading and unloading directly from transport baskets or other part storage with higher capacity possible. The integration of post-process devices, marking machines, spinning stations etc. are available as standard solutions. Of course, different spindles with different electrical power are used. Buderus clamping devices collet chucks diaphragm clamping pitch line clamping chuck device Chucking device One important module of a machine tool is a safe and reproducible locating and clamping device for the workpiece. Therefore, Buderus Schleiftechnik mainly depends on self-developed clamping devices like tooth flank clamping device for locating gears in the pitch line diameter. With these clamping chuck the radial clamping forces are minimized. Cross slide and main spindle ID grinding 6
A thousand possibilities exploit them for your special requirements. The modular system starts with the machine bed. Sizes of 1,200 up to 7.320 are available. This gives rise to small, compact machines with only one machining station up to the simultaneous machines with two main spindles, which are then bigger, but taking into account the options that they provide, still remain compact. Naturally, the machine bed is available not only in welded construction but also, as is usual at Buderus Schleiftechnik, in natural granite. The standard machining and handling modules available are for Internal grinding External grinding Turning (with one or more tools) Rotary turret (with driven tools) Measurement Turn-over of components Additional X- or Z-axes for simultaneous machining Of course, taking into account all the modules with the DVS-Group, many more possibilities are conceivable and integrable in the machine. Internal grinding External grinding Simultaneous slide Measuring probe Turning tool Rotary turret 7 Buderus CNC 235 / CNC 245 Hard Machining Centre
Internal Thread Grinding 8
Configuration small, fast and flexible The modular system provides numerous possibilities to equip the machine according the current requirement. CNC 235 A Small grinding machine with only one tool for external grinding, internal grinding or turning, Bed length 1.200 Small space requirement! CNC 235 I-A-8TR SiMac Simultaneous grinding and turret for complete machining of diameters and faces, Bed length 2.400 Shortest cycle time due to simultaneously machining CNC 235 DH-I-A-T SiMac Simultaneous grinding and turning with two main spindles, complete machining in one clamping, Bed length 3.000 There s nothing faster! CNC 235 H A-8TR Turning and grinding of shafts in on clamping, bed length from 1.800 up to 3.600 Complete machining in one clamping! Use the possibilities! 9 Buderus CNC 235 / CNC 245 Hard Machining Centre
Buderus CNC Shaft Grinding Machines Tooling The shaft grinding machines from Buderus Schleiftechnik are designed for grinding OD and ID on shafts. Moreover, the integration of other processes like turning and milling is also possible. Based on the machining application, the machines are equipped with up to 6 machining units which offer capabilities for simultaneous machining. Cross Slides and Axis Up to 4 cross slides are mounted to the vertical machine base. The cross slides can be equipped with different grinding units or other peripheral components. The work spindle and the tailstock are assembled in horizontal orientation. With this design, it is possible to machine bearing seats, OD of splines, grooves and faces all in one clamping. 10
CNC 235 M and CNC 245 M Center Drive Grinding Machines Quality and Cycle Time The Buderus center drive grinding machines are ideal for machining hollow shafts, because the center drive allows both a simultaneous machining and complete machining in one clamping for IDs, ODs and faces on both sides of the shaft. The single clamping is able to maintain high runout accuracy between ground surfaces, while achieving substantial reductions in cycle time. Simultanously ID and OD grinding hollow shafts The machines are ideal for machining hollow shafts, currently used in today s state-of-the-art dual clutch transmissions. The part is clamped in a diaphragm chuck in the center drive, optional with hydrostatical bearing. A steady rest or tailstock can be used, if needed for support, based on machining requirements. High efficient solutions High process reliability can be obtained with in-process measuring devices and touch probe systems to achieve tight grinding tolerances. The vertical machine design provides easy access to all grinding systems. These machines are offered in two sizes and feature machining solutions for a broad range of applications. State-of-the-art handling and part storage systems round out the configuration, resulting in highefficiency solutions for manufacturing transmissions. 11 Buderus CNC 235 / CNC 245 Hard Machining Centre
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Highlights Two main spindles Why only one component? One controller, one conveyor belt, one machine bed, one chip conveyor, one exhaust and one housing are enough even for two main spindles. So why not combine two machines into one? As a result, double the number of parts can be produced in the same time. More parts for less cost with less space requirement! Simultaneous grinding Why consecutively? Simultaneous grinding has been a specialty of the Buderus Schleiftechnik company since more than 20 years. One additional X-axis and one additional Z-axis can be used on the CNC 235, to be able to carry out internal grinding and external grinding simultaneously. This shortens the main operation time by the machining time of the shortest grinding operation. Double savings It is not only the grinding time that is reduced by the additional cross slide. The dressing of at least one of the two grinding wheels can be shifted to the auxiliary time by a clever arrangement of the dressing. This results in an additional reduction of the cycle time. Modular Construction In principle, anything is possible! The simultaneous grinding as well as the use of two main spindles only becomes possible by the intelligent exploitation of the construction kit und the variable working space in the machine up to an XXL working space. The construction kit allows the customization of the machine specifically to your application. Because...... in principle, anything is possible! 13 Buderus CNC 235 / CNC 245 Hard Machining Centre
Technical data CNC 235 / CNC 245 CNC 235 CNC 235 DH CNC 245 CNC 245 DH Number of main spindles 1 2 1 2 max. work part diameter 200* 200* 350* 350* max. part length 150* 150* 250* 250* max. number machining station 4* 6* 4* 6* rapid feed speed X / Z m/min 90/30 90/30 60/30 60/30 * standard CNC 235 H CNC 235 H CNC 235 H 300 750 max. part diameter 250 250 distance between centers 350* 750* max. no. of tools 4 4 swivel range for grinding spindle grd +/- 45 +/- 45 max. grinding wheel diameter 600 600 rapid feed speed X / Z m/min 90/30 90/30 * standard CNC 245 H CNC 245 H CNC 245 H CNC 245 H CNC 245 H CNC 245 H 300 750 1000 2000 3000 max. part diameter 800 800 800 800 800 Distance between centers 300* 750* 1000* 2000* 3000* max. no. of tools 6 6 6 6 6 swivel range for grinding spindle grd +/- 45 +/- 45 +/- 45 +/- 45 +/- 45 max. grinding wheel diameter 750 750 750 750 750 rapid feed speed X / Z m/min 30/30 30/30 30/30 30/30 30/30 * standard CNC 235 M / CNC 245 M CNC 235 M CNC 245 M max. clamping diameter 100* 200* max. part length 750* 1000* max. no. of grinding spindles 4 6 * standard 14
Service all over the world Buderus Schleiftechnik machines are used everywhere high performance is required. Service in close proximity to our customers is an important part of our product policy to ensure that these requirements are satisfied reliably on a longterm basis. The objective of all our services is to enduringly increase our customers profit, as well as to fulfill our customers requirements and expectations better and more quickly. To achieve this goal we offer a variety of services, developed in cooperation with our customers and continuously adapted to the changing requirements and conditions. We offer the following services to extend the service life of our machines: Trainings Maintenance/ Service 15 Buderus CNC 235 / CNC 245 Hard Machining Centre
Members of DVS Group BUDERUS Schleiftechnik I www.buderus-schleiftechnik.de Innenrundschleifen Außenrundschleifen Gewindeschleifen Hartdrehen I.D. grinding O.D. grinding Thread grinding Hard turning DISKUS WERKE Schleiftechnik I www.diskus-werke.de Planschleifen Doppel-Seiten-Planschleifen Sonderbearbeitung Face grinding Double face grinding Special machining HEYLIGENSTAEDT I www.heyligenstaedt.de Wellendrehen - Fräsen - Schwerdrehen Shaft turning - Milling - Heavy duty turning NAXOS-DISKUS I www.naxos-diskus.de Konventionelle Schleifwerkzeuge CBN Diamant Conventional grinding tools CBN Diamond tools PITTLER I www.pittler.de Vertikaldrehbearbeitungszentren Fräsen Schleifen Pick-up-Systeme Vertical turning center Miling Grinding Pick-up systems PRÄWEMA I www.praewema.de Verzahnungshonen/-schleifen Verzahnungsfräsen Anspitz-/Hinterlegungsfräsen Gearhoning Geargrinding Hobbing/Fly-cutting Chamfering DVS Technology I www.dvs-technology.de DVS Technologien im Serieneinsatz DVS Technologies in mass production deployment WMZ Werkzeugmaschinenbau Ziegenhain I www.wmz-gmbh.de Mittenantriebsmaschinen Motorspindeln Center drive turning Motor spindles WMZ Precision Machinery (Shenyang) DVS Sales China - DVS Service China DVS Sales China - DVS Service China Buderus Schleiftechnik GmbH Industriestraße 3 35614 Aßlar Germany Tel.: + 49 (0) 6441 8006 0 Fax: + 49 (0) 6441 8006 16 Email: info@buderus-schleiftechnik.de www.buderus-schleiftechnik.de www.dvs-gruppe.com