There is described a grinding wheel (1), particularly for grinding operations carried out on sheets of glass (2), ceramic material or similar materials, comprising a disc-shaped support with abrasive material arranged on the circumferential profile of the support, and an opposing central hole (3) for attachment to a drive shaft (4) of the grinding wheel. The disc-shaped support comprises a pair of opposed disc-shaped grinding wheel bodies (5, 6) coupled in a facing position so as to define together the abrasive grinding surface (5c, 6c) along the circumferential profile, and each of the disc-shaped bodies (5, 6) has a predetermined resilience such that the disc-shaped bodies (5, 6) can be flexed away from each other in the zone of contact with the component being ground, for the purpose of consequently applying pressure to the component in the grinding operation.
B24B 9/10 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of plate glass
B24D 5/06 - Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their peripheryBushings or mountings therefor with inserted abrasive blocks, e.g. segmental
B24D 5/10 - Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their peripheryBushings or mountings therefor with cooling provisions, e.g. with radial slots
AN ABRASIVE DISC FOR A MULTIPLE DISC GRINDING MACHINE, IN PARTICULAR FOR PROCESSING STONE AND LIKE MATERIALS, AND A GRINDING MACHINE INCLUDING SAID DISC
An abrasive disc for a multiple disc grinding machine is described, comprising a disc-shaped support (Ia) having a circumferential rim (4) on which the abrasive material is placed and an opposing central hole (7) for fitting on to a driving shaft (3) of the grinding machine, said hole (7) extending through the thickness of the disc-shaped support (Ia), in which a portion of said central hole (7) has a diameter greater than the diameter of the connection to said shaft (3), such that an annular chamber (8) is formed in the thickness of the support (Ia). The further disc (1) comprises at least one radial recess (10) formed on a front surface (9) of the disc-shaped support (Ia) and extending from said annular chamber (8) towards the circumferential rim (4) of said disc, in such a way that a coolant fluid fed into the driving shaft (3) can accumulate in said annular chamber (8) and can then flow through said radial recess (10) towards the abrasive edge of said disc (1).
B24B 7/22 - Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfacesAccessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
B24D 5/10 - Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their peripheryBushings or mountings therefor with cooling provisions, e.g. with radial slots
B24D 5/06 - Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their peripheryBushings or mountings therefor with inserted abrasive blocks, e.g. segmental
3.
AN ABRASIVE DISC FOR A MULTIPLE DISC GRINDING MACHINE, AND A GRINDING MACHINE INCLUDING SAID DISC
An abrasive disc for a multiple disc grinding machine is described, comprising a disc-shaped support having a circumferential rim on which the abrasive material is placed and an opposing central hole for fitting on to a driving shaft of the grinding machine, the hole extending through the thickness of the disc-shaped support. A portion of the central hole has a diameter greater than the diameter of the connection to the shaft, such that an annular chamber is formed in the thickness of the support. The disc includes at least one radial recess formed on a front surface of the disc-shaped support and extending from the annular chamber towards the circumferential rim of the disc, in such a way that a coolant fluid fed into the driving shaft can accumulate in the annular chamber and then flow through the radial recess towards the abrasive edge of the disc.
B24B 55/02 - Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
B24D 5/10 - Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their peripheryBushings or mountings therefor with cooling provisions, e.g. with radial slots
A grinding wheel is described, particularly for grinding work at a high feed speed, comprising a discoid body (2) between the axially opposed faces (2a, 2b) of which an outside wall (4) of cylindrical profile is defined, bearing the abrasive grinding material, and wherein the abrasive material is disposed circumferentially on the outside wall without a gap. The grinding wheel also comprises a plurality of ducts (7) extending radially in the discoid body (2), opening onto the outside wall (4) and also passing through the abrasive material, so as to constitute ducts for conveying a cooling and/or lubricating liquid onto the abrasive outer surface of the outside wall.
B24B 9/10 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of plate glass
B24D 5/10 - Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their peripheryBushings or mountings therefor with cooling provisions, e.g. with radial slots
5.
A CUTTING TOOL, PARTICULARLY FOR STONE MATERIALS AND THE LIKE
What is described is a tool for cutting stone materials, porcellaneous stoneware, glass and the like, comprising a support (2) having a transverse thickness (4) with respect to the direction of cutting, abrasive segments (8, 9) made from a mixture of abrasive material and binder being attached to the said support, the said segments being positioned in sequence along a cutting edge (3) of the support and projecting from the support, the segments comprising a first and a second plurality of segments, in which one or more segments (8) of the first plurality alternate with one or more segments (9) of the second plurality in sequences which are repeated along the cutting edge (3). The segments (8) of the first plurality have a greater thickness than the segments (9) of the second plurality, and the abrasive material from which the segments (8) of the first plurality are formed has a smaller particle size than the abrasive material from which the segments (9) of the second plurality are formed.
Machine tools and dies for use in the ceramic, glass, mechanics, optical and stone industries for cutting and forming of materials, namely profiling wheels, calibrating wheels, pre-cutting wheels, cutting discs, calibrating tools, honing and polishing tools, drills, grinders, honers
Machine tools and dies for use in the ceramic, glass, mechanics, optical and stone industries for cutting and forming of materials, namely profiling wheels, calibrating wheels, pre-cutting wheels, cutting discs, calibrating tools, honing and polishing tools, drills, grinders, honers
