Strength. Superior. Expected Precision. 3M Cubitron II Conventional Wheels for Gear Grinding

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1 for Grinding Strength Superior Expected Precision Take your manufacturing process to the next level of productivity with 3M Cubitron II Conventional Wheels for gear grinding. 3

2 for Grinding A new dimension of gear grinding performance 3M Cubitron II Grinding Wheels are engineered to help you achieve consistent, highquality finishes and tight geometry tolerances, part after part while increasing the efficiency and productivity of your operations. Increased throughput Reduce machining time by up to 5% in some applications. Faster grinding and less downtime for truing. Less wheel dressing Cubitron II Grinding Wheels are strong enough to maintain their shape and free-cutting ability for an extended time. More time between dressing cycles, faster feed rates and lower costs per part. Precision Dramatically lower risk of burning Practically eliminates the risk of abrasive burning under typical grinding conditions. Despite high contact, virtually no thermal load is created between Cubitron II Grinding Wheels and the workpiece, even under extreme grinding conditions. Extended wheel life Cubitron II Grinding Wheels provide up to 2 to 3 times the service life of conventional ceramic wheels. Consistent grinding performance Delivers high quality, in-spec finishes every time. In repeated tests and trials, these wheels generated reliable and consistent results, making the grinding process easier and more predictable. Grinding New 3M Cubitron II Grinding Wheels are the result of incorporating both 3M s revolutionary precision-shaped grain and state-of-the-art bonding systems. Cubitron II Grinding Wheels form part of today s most innovative portfolio of advanced abrasive technologies. 2

3 3M Cubitron II Single Rib Grinding Wheels W ind turbines T ransmissions P lanetary, spur and hollow gears P inion shafts 3M Cubitron II Threaded Grinding Wheels A utomotive S pur and pinion gears P inion shafts 3M Cubitron II Spiral Bevel Grinding Wheels A utomotive A viation A griculture C onstruction and industrial machinery The science of 3M Precision-Shaped Grain The secret behind the strength and performance of Cubitron II Grinding Wheels lies in the revolutionary precision-shaped ceramic grain technology pioneered by 3M. As the triangular shaped grain wears, it continuously fractures to form sharp points and edges that slice through metal, wear evenly and provide super-long life and consistency. 3M Precision-Shaped Grains slice through metal staying cooler, cutting faster and lasting longer. Conventional ceramic abrasive grain tends to plow through the metal, causing heat to build up in the workpiece and the abrasive. With conventional abrasives, standard grinding consumes up to 1 more energy than other metal removal processes, such as turning or milling. The sharp cutting edges of Cubitron II Grinding Wheels, however, use less energy than standard grinding while diverting heat away from the workpiece. The free-cutting properties and superior service life of Cubitron II Grinding Wheels can help improve efficiency and drive down costs compared to conventional ceramic wheels. 3

4 for Grinding 3M Cubitron II Single Rib Grinding Wheels 968SR and 963SR These advanced abrasive wheels can potentially cut your grinding cycle times in half! Cubitron II Single Rib Grinding Wheels grind faster and last longer than conventional abrasive wheels, helping you maximize the efficiency and productivity of your operations. With high removal rates, Cubitron II Single Rib Grinding Wheels require less machine power and can even eliminate the need for hobbing/gashing. One wheel can grind and finish various gear materials, from soft to hardened steel. And the longer grinding chips make coolant filtration easier and could result in cleaner, longer-lasting coolant, less machine wear and better part quality. Minimal risk of burning Up to 5% shorter grinding cycles Up to 6% less truing Up to 3 longer wheel life A cool way to increase productivity 3M Cubitron II Single Rib Grinding Wheels 968SR, SR, 8+ Wheel Speed (V c ) Hardened Steel Quenched and Tempered 3m/s 35m/s Wheel Speed (V c ) Hardened Steel Quenched and Tempered 3m/s 35m/s Feed Rate (V w ) Material Removal Rate (Q w) Chip Volume (V w) Standard Machines Höfler Rapid Series Hardened Steel Quenched and Tempered Roughing Finishing 3,5 mm/min 9, 12, mm/min 24 3 mm 3 /mm/sec 2 23 (3*) mm 3 /mm/sec 4, 6, mm 3 /min 3 7 mm 3 /mm Feed Rate (V w ) Material Removal Rate (Q w) Chip Volume (V w) Standard Machines Höfler Rapid Series Hardened Steel Quenched and Tempered Roughing Finishing 3,5 mm/min 9, 12, mm/min (3) mm 3 /mm/sec 16 2 (24) mm 3 /mm/sec 3, 5, mm 3 /min 3 5 mm 3 /mm * If the root is not ground Chip volume: V w is given in mm 3 /mm (volume removed per mm wheel width) and refers to the volume removed until redressing is initiated. Dressing Roughing: Overlap ratio q d 1., dress ratio.6 synchronous Dressing Finishing: Overlap ratio q d 4 to 6 (8), dress ratio -.6 to -.8 asynchronous. Competitive Ceramic Wheel Cubitron II Single Rib Wheel Removal Rate, Q w (mm 3 /mm/s) Double Flank Roughing & Finishing Double Helical Bull Double Helical Pinion Parts per Wheel Double Helical Bull Double Helical Pinion Case in Point: One manufacturer of double helical bull gears was able to grind an estimated 4 gears per Cubitron II Single Rib Grinding Wheel compared to 4-6 wheels per gear with a competitive ceramic abrasive product. 4

5 3M Cubitron II Threaded Grinding Wheel 965W Tooth flank grinding operations demand exceptional dimensional and contouring accuracy. Cubitron II Threaded Grinding Wheels not only dramatically reduce the risk of abrasive burning, but also achieve consistently tighter tolerances and higher grinding parameters than standard tools. Minimal risk of burning Up to 5% shorter grinding cycles Up to 5% less truing Up to 2 longer wheel life Case in Point: One manufacturer of planet gears obtained 2-3 faster material removal rate using Cubitron II Threaded Grinding Wheels compared to a competitive ceramic wheel. Shift into high gear Surface speed Vc Infeed a e max (mm per stroke) z Feed rate f z max (mm/rev) Shift movement (mm/mm/stroke) y Stroke movement x Removal Rate (Qmax, mm 3 /s) 3M Cubitron II Threaded Grinding Wheels Operating Parameters/ Specifications Dimensions by machine type 8+, 12+ Application as of module mm 8+ Application as of module 4 6 mm Cutting speed (V c ) 8 m/s 63 m/s Feed rate (V w ) mm/u roughing, mm/u finishing Mobility Maximum Maximum Delivery (a e ) Delivery a e is a Q w function. Set total delivery in roughing stroke (to module 6). Finishing stroke.2mm on flank (at 2 pressure angle =.6 mm radial) MRR (Qmax) Dependent on worm mobility generally approx. 3 6 m 3 /s Theoretical average chip thickness (hnom) Shifting.2.7 μm.2.7 μm 3% reduction compared to standard values (Reishauer machines, etc.) 3% longer tool life of Liebherr machines Shift speed depending on module between.15 and.35 mm per mm stroke Cutting strategy for case-hardened steel: 1 roughing stroke and 1 finishing stroke 2 roughing stroke for low-performing machines with extremely increased feed rates Various dimensions are available for conventional machine types. Profiling as specified: module m, mobility gg, pressure angle Ew. Reishauer Liebherr Gleason Kapp Höfler Total Cycle Time (seconds) Spur 9 Spur Competitive Ceramic Wheel Helical 66 4 Helical Helical Cubitron II Single Rib Wheel Planetary 132 Helical 5

6 for Grinding 3M Cubitron II Spiral Bevel Grinding Wheel 964BV Spiral bevel gears are designed to transmit high loads at right angles, and are typically used in vehicle differentials, marine drives and industrial conveyors applications where reliability and efficient, low-maintenance performance are crucial. Cubitron II Spiral Bevel Grinding Wheels can achieve tight tolerances and deliver highquality, smooth-running final parts all at twice the feed rate, so you can produce more gears per wheel. Cover all the angles Transportation Automotive drive systems Commercial trucks Agricultural Tractors Harvesters Industrial Machinery Heavy-duty construction and mining machines Forklifts Helicopters and other rotorcraft drive systems Hay machines Irrigation Conveyor drives Marine drives Competitive Ceramic Wheel Cubitron II Single Rib Wheel 8+ Feed Rate (mm/min) Crown s 8+ Total Cycle Time (minutes) 25 Case in Point: A crown gear manufacturer obtained excellent results with Cubitron II Spiral Bevel Grinding Wheels, and was able to reduce grinding time from 3:5 to 1:36, tripling the feed rate from 4 mm/min to 12 mm/min compared to a competitive ceramic wheel Crown 6

7 3M Wendt Dressing Solutions for Grinding 3M Wendt Dressing Products are engineered to work efficiently with 3M Cubitron II Conventional Wheels for Grinding, by matching wheel specification to the diamond roll. These products are designed and manufactured for use in precision grinding operations. While Cubitron II wheels can drastically decrease dressing frequency, 3M supplies and will continue to develop the best combination of products for your best results utilizing our technical resources across the globe. Dress for success Rotary Dressers During the abrasive cutting process, the grinding wheel is subject to wear and to clogging with detritus. As a consequence, the defined cutting topography, which is made up of abrasive grains and bonding material, gradually changes. While Cubitron II wheels have proven to lower the dress frequency, it is still necessary to maintain the defined cutting topography by repeated dressing in order to make the best use of potential wheel life. 3M Wendt Diamond Roller Dressers meet the most demanding requirements, as they can transfer highly accurate profiles within very short dressing cycle times via plunge dressing into vitrified grinding wheels. Full Form Dressers for threaded and worm wheels CVD Dressing Discs for single rib wheels Features Reverse Plated Random Set, Hand Set and Combination Sinter Bonds with Controlled Density, Size and Orientation Dressing Systems 3M develops and supplies precision dressing systems for all types of grinding machines. Dressing system quality has a determining influence on the efficiency and economy of the overall grinding process. For this reason, dressing systems require high-quality components in terms of both stiffness and precision. 3M Wendt Dressing Systems meet the highest requirements, whether for standard versions or custom built solutions. Dressing Equipment Inline Cantilever Spindles Outboard Support Dresser Spindles Quick Change Spindle Arbors Infeed Dresser Systems 7

8 for Grinding For more than 1 years, 3M has been a world leader in developing advanced abrasives to meet today s toughest processing challenges. Together with the former Winterthur Technologies Group, which is now part of 3M, we help customers in virtually every industrial sector improve productivity, cut costs and achieve the consistent, highquality finishes they need to compete in a world marketplace. The 3M, Winterthur, Wendt and SlipNaxos brands are recognized and trusted worldwide for reliable quality and precision abrasive products used in a wide variety of industries, including automotive, oil and gas, cutting tools, aircraft and land-based turbines, and much more. For additional information, visit Warranty, Limited Remedy, and Disclaimer: Many factors beyond 3M s control and uniquely within user s knowledge and control can affect the use and performance of a 3M product in a particular application. User is solely responsible for evaluating the 3M product and determining whether it is fit for a particular purpose and suitable for user s method of application. Unless an additional warranty is specifically stated on the applicable 3M product packaging or product literature, 3M warrants that each 3M product meets the applicable 3M product specification at the time 3M ships the product. 3M MAKES NO OTHER WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OR CONDITION OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY IMPLIED WARRANTY OR CONDITION ARISING OUT OF A COURSE OF DEALING, CUSTOM OR USAGE OF TRADE. If the 3M product does not conform to this warranty, then the sole and exclusive remedy is, at 3M s option, replacement of the 3M product or refund of the purchase price. Limitation of Liability: Except where prohibited by law, 3M will not be liable for any loss or damage arising from the 3M product, whether direct, indirect, special, incidental or consequential, regardless of the legal theory asserted, including warranty, contract, negligence or strict liability. 3 Abrasive Systems Division 3M Center, Building 223-6S-3 St. Paul, MN Please recycle. Printed in USA. 3M 213. All rights reserved. Issued: 1/ HB M, Cubitron and Wendt are trademarks of 3M Company. Used under license by 3M subsidiaries and affiliates.