Disclosed herein is a scribing wheel having a predetermined thickness and a disk shape. The scribing wheel includes: a wheel body configured in such a way that at least a peripheral edge portion thereof is gradually reduced in thickness from the center to the radial outside; and a cutter part including recesses and cutting blade teeth which are alternately arranged along the peripheral edge portion. Each recess is formed by a combination of side recess portions formed in opposite side surfaces of the peripheral edge portion of the wheel body and an edge recess portion formed in the peripheral edge of the wheel body.

A method of separating a strengthened glass sheet includes positioning a serrated scribing wheel at a position spaced apart from a first edge of the glass sheet and offset below a top surface of the glass sheet, where the glass sheet comprises a surface compression layer of layer depth DOL and a central region. The method also includes translating the serrated scribing wheel in a first direction at an initiation speed such that the serrated scribing wheel forms a crack initiation site comprising surface indentations extending into the surface compression layer, accelerating the serrated scribing wheel in the first direction from the initiation speed to a scoring speed to scribe a score line extending into the glass sheet to a median crack depth greater than DOL, and stopping the serrated scribing wheel in the first direction before the score line reaches a second edge of the glass sheet.

A cutter head includes: a support platform; a double curved surface member mounted on the support platform and having a first curved surface and a second curved surface; a cutter wheel support member and a roller wheel support member moveably mounted on the support platform, respectively; a cutter wheel and a roller wheel mounted on the cutter wheel support member and the roller wheel support member, respectively; a first transmission mechanism mounted on the support platform, configured to be mated with the first curved surface, and connected to the cutter wheel support member, so as to transmit a movement of the double curved surface member to the cutter wheel; and a second transmission mechanism mounted on the support platform, configured to be mated with the second curved surface, and connected to the roller wheel support member, so as to transmit a movement of the double curved surface member to the roller wheel. The cutter head has a compact structure, and it improves the levelness of the cutter wheel and the roller wheel, and increases the mechanical precision.

A wheel cutter for cutting a flexible glass substrate and a cutting method thereof are provided and the wheel cutter has a first disk surface and a second disk surface; a circumferential cutting edge formed by the first disk surface and the second disk surface extending outwardly and intersecting each other; a central shaft hole; and a hollow region connected to the central shaft hole; a plurality of recesses distributed on the circumferential cutting edge and communicating with the hollow region; wherein the hollow region is a double cone structure configured to allow cleaning an inside of the wheel cutter.

Provided is a glass winding system configured to switch between a breaking mode and a winding mode in which glass is wound with an interleaf to form the glass roll. Furthermore, a system for forming glass rolls includes a glass ribbon supply system (100), a cutting system (200) configured to cut the initial glass ribbon into a first glass ribbon and a second glass ribbon, a first glass winding system (400) configured to wind the first glass ribbon to form a first glass roll, and a second glass winding system (300) configured to switch between a breaking mode and a winding mode.

A bend-breaking jig changes a rolling direction of a bend-breaking cutter wheel in bend-breaking processing. In first and second bend-breaking jigs, a cutter wheel axis extending in an up-down direction of the cutter wheel is eccentric radially outward with respect to a cutter holder center axis extending in an up-down direction of a bend-breaking cutter holder. The cutter wheel is rotatable by 360? in a direction around the cutter wheel axis with respect to the cutter holder. When the first and second bend-breaking jigs slightly travel on an upper surface of an edge part of a glass plate in a predetermined direction in parallel with the upper surface, the cutter wheel abutting on the upper surface of a glass plate edge part rotates in the direction around the cutter wheel axis, and a rolling direction of the cutter wheel becomes the same as a traveling direction of the bend-breaking jigs.

A method of shaping a laminated glass structure includes providing the laminated glass structure comprising a flexible glass sheet having a thickness of no greater than about 0.3 mm laminated to a non-glass substrate by an adhesive layer. The flexible glass structure and adhesive layer are ground using a first tool to remove glass material. The non-glass substrate is cut with a second tool different from the first tool through a kerf formed through the flexible glass structure thereby forming a shaped laminated glass structure. A glass edge strength of a cut edge of the shaped laminated glass structure is at least about 20 MPa.

A cutter head includes: a support platform; a double curved surface member mounted on the support platform and having a first curved surface and a second curved surface; a cutter wheel support member and a roller wheel support member moveably mounted on the support platform, respectively; a cutter wheel and a roller wheel mounted on the cutter wheel support member and the roller wheel support member, respectively; a first transmission mechanism mounted on the support platform, configured to be mated with the first curved surface, and connected to the cutter wheel support member, so as to transmit a movement of the double curved surface member to the cutter wheel; and a second transmission mechanism mounted on the support platform, configured to be mated with the second curved surface, and connected to the roller wheel support member, so as to transmit a movement of the double curved surface member to the roller wheel. The cutter head has a compact structure, and it improves the levelness of the cutter wheel and the roller wheel, and increases the mechanical precision.

A method of shaping a laminated glass structure includes providing the laminated glass structure comprising a flexible glass sheet having a thickness of no greater than about 0.3 mm laminated to a non-glass substrate by an adhesive layer. The flexible glass structure and adhesive layer are ground using a first tool to remove glass material. The non-glass substrate is cut with a second tool different from the first tool through a kerf formed through the flexible glass structure thereby forming a shaped laminated glass structure. A glass edge strength of a cut edge of the shaped laminated glass structure is at least about 20 MPa.

An object is to provide polycrystalline diamond applicable to diverse applications; and a water jet orifice, a stylus for gravure printing, a scriber, a diamond cutting tool, and a scribing wheel that include such polycrystalline diamond. This object is achieved by polycrystalline diamond obtained by converting and sintering non-diamond carbon under an ultrahigh pressure and at a high temperature without addition of a sintering aid or a catalyst, wherein sintered diamond grains constituting the polycrystalline diamond have an average grain diameter of more than 50 nm and less than 2500 nm and a purity of 99% or more, and the diamond has a D90 grain diameter of (average grain diameter+average grain diameter0.9) or less.