Electrical discharge dressing of metal-bonded grinding wheels Introduction Metal bonded diamond wheels are generally used for grind-ing difficult-to-cut materials, since diamonds have key properties such as high wear resistance, high hardness, low friction and thermal expansion coefficients, and the
Metal bonded diamond grinding wheels are very important for precision grinding operations of hard and brittle materials especially like ceramics or cemented carbides. But the trueing and dressing problem has affected its wide use. In this paper, a new EDD (Electrical discharge dressing) device was developed for the dressing of metal bonded diamond arc grinding wheels.
Electrical discharge dressing has been established as alternative for conditioning metal bonded diamond wheels, which will be exploited to develop in-process wire electrical discharge dressing (IWEDD). The main requirements for its successful implementation are first presented in this work.
For evaluating this dressing process, a wire electrical discharge dressing unit was designed, manufactured, and integrated into a universal cylindrical grinding machine. The dressing process is carried out using the grinding oil also as dielectric fluid. High material removal rates were achieved.
Truing and dressing of superabrasive grinding wheels remain as one of the most important issues in hard-to-cut materials’ precise machining field. Recently, electrical discharge dressing process with less pollution, aimed to protect environment, has become an urgent studying subject in the world.
May 07, 2015· Available from United Grinding, the Studer WireDress electrical discharge wheel dresser uses the wire erosion principle to dress metal-bonded grinding wheels on the grinding machine without the need to remove the wheel for external dressing.The electrode wire is drawn with a small gap tangentially past the machining point at a constant speed of 100 mm/sec.
It is basically composed of one DC drive motor electrical discharge machining (EDM) processes, wire and a hysteresis clutch, which is responsible for keeping a EDM and die-sinking EDM, can be used for truing and constant tension on the tool electrode, brake wheels, belt dressing metal-bonded grinding wheels [11, 14, 18, 19].