Conventional Wheels Offered for Gear Grinding
3M Abrasive Systems’ 3M Cubitron II gear grinding wheels combine the company’s precision-shaped grain and bonding systems to promote consistent, high-quality finishes and tight geometry tolerances.
3M Abrasive Systems’ 3M Cubitron II gear grinding wheels combine the company’s precision-shaped grain and bonding systems to promote consistent, high-quality finishes and tight geometry tolerances. The grains are designed to continuously fracture as they wear, forming sharp points and edges to slice through metal. According to the company, the wheels provide increased throughput, reduced wheel dressing, reduced risk of burning and extended wheel life. Single-rib, threaded and spiral-bevel configurations also are available.
In vertical grinding, the workpiece is held upright in a rotary chuck with the grinding spindle overhead. This configuration can improve roundness, facilitate single-setup processing and prolong the life of the machine. Loading and unloading may gets easier, too. Workpieces with relatively large diameters and short lengths benefit the most from vertical grinding.
It sounds like a contradiction in terms-between centers and centerless grinding on one machine. But for some categories of workpieces, it's a viable production process that can yield machining time reductions of 45 percent over separate grinding operations.
Optimizing a camshaft lobe grinding cycle has traditionally been based less on science and more on educated guesswork and numerous test grinds. Now, computer thermal modeling software can predict areas where lobe burning is likely to occur, in order to determine the fastest possible work speed that won't thermally damage lobes and greatly reduce the number of requisite test grinds.