Abstract: A process for retruing a profile in an abrasive wheel is provided. A lathe table including an edged cutting tool is used for fixturing a grinding wheel having an outside metal edge and an abrasive matrix adjacent thereto for rotation along an axis compatible for lathe removal of material at at least the outside edge of said wheel. A predetermined amount of material along said edge with the edged lathe cutting tool is removed using the lathe cutting tool. A rotating electrical discharge profiling tool which is attached to an electrical discharge machine is used for profiling of the wheel by electrical discharge machining of the abrasive surface with the rotating electrode. The process uses a machine specifically designed for electrical discharge machining of the profile. The machine also has a mechanism cutting a predetermined profile into the electrode without removing it from the machine.

Abstract: A dental burr and process of manufacture having a synthetic diamond grit abrasive portion. The dental burr includes a dental burr tool substrate including a shaft portion and a working portion. The working portion contains on its outer surface a synthetic diamond abrasive grit cutting surface. The synthetic diamond is brazedly attached to the surface.

Abstract: Process for manufacture of a dental burr including a brazed diamond grit working surface comprising the steps of: a. providing a vacuum induction furnace and a graphite insert which is tuned to be heated at a predetermined frequency in the induction furnace, said graphite insert including a sub chamber configured for receiving at least one dental burr; b. providing a dental burr blank including a shaft portion and a working head portion; c. providing a synthetic diamond abrasive grit material, which is unprocessed for removal of ferromagnetic properties, mixture with a temporary green binder which adheres to the burr substrate and coating the working head portion with the mixture; d. placing the coated burr into the graphite insert sub chamber and heating the graphite insert to 910 to 990° C.; and e. heating the coated burr in the chamber under a vacuum for forming a diamond burr with a brazed diamond grit working surface.

Abstract: A process for retruing a profile in an abrasive wheel is provided. A lathe table including an edged cutting tool is used for fixturing a grinding wheel having an outside metal edge and an abrasive matrix adjacent thereto for rotation along an axis compatible for lathe removal of material at at least the outside edge of said wheel. A predetermined amount of material along said edge with the edged lathe cutting tool is removed using the lathe cutting tool. A rotating electrical discharge profiling tool which is attached to an electrical discharge machine is used for profiling of the wheel by electrical discharge machining of the abrasive surface with the rotating electrode. The process uses a machine specifically designed for electrical discharge machining of the profile. The machine also has a mechanism cutting a predetermined profile into the electrode without removing it from the machine.

Abstract: The present invention relates to a beveling wheel and method for forming a beveled lens with the beveling wheel for use with eyeglasses. One embodiment includes a prescription lens for use on an eyeglass frame having a receiving channel. The receiving channel includes a channel bottom and opposed interior wall surfaces having a first angle therebetween. The prescription plastic lens includes a prescription lens body generally defined by a peripheral edge having a bevel extending away from the edge to a vertex. The bevel has a distal portion with a second angle. The bevel is receivable within the receiving channel. At least a portion of the vertex of the bevel has an interference fit with the receiving channel bottom when held within the eyeglass frame. The first angle is greater than the second angle.

Abstract: Process for manufacture of a dental burr including a brazed diamond grit working surface comprising the steps of: a. Providing a vacuum induction furnace and a graphite insert which is tuned to be heated at a predetermined frequency in the induction furnace, said graphite insert including a sub chamber configured for receiving at least one dental burr; b. Providing a diamond dental burr blank including a shaft portion and a working head portion; c. Providing a diamond like hardness abrasive grit material mixture with a temporary green binder which adheres to the burr substrate and coating the working head portion with the mixture; d. Placing the coated burr into the graphite insert sub chamber; and e. Precision heating the coated burr in the chamber under a vacuum for forming a diamond burr with a brazed diamond grit working surface.

Abstract: A dental burr and process of manufacture having a synthetic diamond grit abrasive portion. The dental burr includes a dental burr tool substrate including a shaft portion and a working portion. The working portion contains on its outer surface a synthetic diamond abrasive grit cutting surface. The synthetic diamond is brazedly attached to the surface.

Abstract: The present invention relates to a beveling wheel and method for forming a beveled lens with the beveling wheel for use with eyeglasses. One embodiment includes a prescription lens for use on an eyeglass frame having a receiving channel. The receiving channel includes a channel bottom and opposed interior wall surfaces having a first angle therebetween. The prescription plastic lens includes a prescription lens body generally defined by a peripheral edge having a bevel extending away from the edge to a vertex. The bevel has a distal portion with a second angle. The bevel is receivable within the receiving channel. At least a portion of the vertex of the bevel has an interference fit with the receiving channel bottom when held within the eyeglass frame. The first angle is greater than the second angle.

Abstract: The present invention relates to a beveling wheel and method for forming a beveled lens with the beveling wheel for use with eyeglasses. One embodiment includes a prescription lens for use on an eyeglass frame having a receiving channel. The receiving channel includes a channel bottom and opposed interior wall surfaces having a first angle therebetween. The prescription plastic lens includes a prescription lens body generally defined by a peripheral edge having a bevel extending away from the edge to a vertex. The bevel has a distal portion with a second angle. The bevel is receivable within the receiving channel. At least a portion of the vertex of the bevel has an interference fit with the receiving channel bottom when held within the eyeglass frame. The first angle is greater than the second angle.

Abstract: The present invention relates to a beveling wheel and method for forming a beveled lens with the beveling wheel for use with eyeglasses. One embodiment includes a prescription lens for use on an eyeglass frame having a receiving channel. The receiving channel includes a channel bottom and opposed interior wall surfaces having a first angle therebetween. The prescription plastic lens includes a prescription lens body generally defined by a peripheral edge having a bevel extending away from the edge to a vertex. The bevel has a distal portion with a second angle. The bevel is receivable within the receiving channel. At least a portion of the vertex of the bevel has an interference fit with the receiving channel bottom when held within the eyeglass frame. The first angle is greater than the second angle.

Abstract: The present invention relates to a beveling wheel and method for forming a beveled lens with the beveling wheel for use with eyeglasses. One embodiment includes a prescription lens for use on an eyeglass frame having a receiving channel. The receiving channel includes a channel bottom and opposed interior wall surfaces having a first angle therebetween. The prescription plastic lens includes a prescription lens body generally defined by a peripheral edge having a bevel extending away from the edge to a vertex. The bevel has a distal portion with a second angle. The bevel is receivable within the receiving channel. At least a portion of the vertex of the bevel has an interference fit with the receiving channel bottom when held within the eyeglass frame. The first angle is greater than the second angle.

Abstract: Ophthalmic abrasive wheel including a plurality of swarf clearing grooves formed across the cutting surface and having closed profiles such that the swarf clearing grooves do not open to or exit the side of the abrasive wheel. The swarf clearing grooves are spaced around the cutting surface of the wheel and are configured so as to be substantially angled either towards or away from one another.