摘要:
An abrasive article produced by a molding process including injection molding blow molding, extrusion, and thermoforming where the article includes a thermoformable material having an abrasive grit intermixed homogeneously therein.
摘要:
A one-piece abrasive sheet and method of manufacture. The abrasive pad has a planar sheet portion with a plurality abrasive protrusion extending therefrom. The protrusions are intimately molded with the planar sheet portion to form a one-piece sheet. Thermoplastic and abrasive grit mixture may be used to form the sheet. The resulting pad has improved durability.
摘要:
A segmented type abrasive pad for use in stone finishing industries. The pad is less expensive than prior segmented pads and has increased life due to the inclusion of non-abrasive load bearing segments. The non-abrasive segments allow for the use of less diamond segment material without sacrificing performance or longevity of the pad.
摘要:
A novel construction of a single blade fly cutter type generator wheel. The wheel incorporates a single polycrystalline blade. The blade is counterbalanced by a cut-out portion. An abrasive grit material is provided on a surface of the wheel rim which follows the polycrystalline blade. The abrasive grit cooperates with the blade such that it breaks down large turnings generated by the blade during cutting operations to increase efficiency of the wheel and allows the use of only one blade. An improved method for drilling or cutting of composites is provided wherein softer layers of the composites are not adversely affected during the cutting or drilling operation.
摘要:
A method of manufacture of a durable abrasive sheet which includes a perforated metal sheet of woven metal mesh or the like having abrasive grit brazedly attached, imbedded in a backing substrate. The method includes the steps of coating a perforated metal substrate with a mixture of an infiltrant and a temporary binder and applying a layer of abrasive grit particles thereto. Thereafter, this product is heated to drive off the binder and attach the grit particles to the perforated metal substrate. The metal substrate having the grit particles attached is then imbedded in a backing substrate such that the portion of the perforated metal substrate having the grit particles attached are at the surface of the backing substrate. In order to provide a cutting type abrasive sheet material the particles are magnetically aligned on the perforated metal substrate and brazed in position. Thereafter, a deformable substrate sheet is placed contiguous with the perforated metal substrate. This combination is placed in a press having a deformable pressure plate which is deformable with respect to the grit material used such that when pressure is applied to imbed the metal substrate the grit particles extend into the deformable pressure plate to provide exposed portions of the grit particles in the final abrasive sheet. A metallized ceramic substrate having abrasive grit particles brazedly attached are also utilized for imbedment in a backing substrate.
摘要:
A method for making replaceable abrasive pads for ophthalmic lens lapping tools wherein a substrate sheet is metal plated with abrasive particles and then shapes suitable for lens lapping tools are cut therefrom. The abrasive pads are suitable for abrading glass or plastic lenses.
摘要:
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.
摘要:
An article such as an ophthalmic lens has a layer of a cross-linked organic polymeric matrix containing a tinting material in a gradient concentration. The tinting material is a dye, a photochromic moiety or a combination of a dye and a photochromic moiety. Various methods of making the article are disclosed.