A method for forming a depression into a glass object for storing cremated remains may include coating a metal sphere with diamond dust. The method may include spinning the diamond dust coated metal sphere via a spindle and motor arrangement. The method further may include pressing the spinning diamond dust coated metal sphere against at least one face of the glass object. Furthermore, the method may include applying coolant while pressing the spinning diamond dust coated metal sphere against at least one face of the glass object. The continuous spin and pressure of the diamond dust coated metal sphere against at least one face of the glass object grinds the depression into the glass object.

Broadly contemplated herein, in accordance with at least one embodiment, is a multi-flute end mill configuration that maintains circumferential spacing between the rake surface and clearance surface adjoining two adjacent end face cutting edges, respectively, regardless of the number of flutes and the desired end face configuration.

An end mill may include a main body having a bar shape extending from a first end to a second end. The main body may include a plurality of cutting edges located at the first end, and a plurality of flutes individually extended from the cutting edges toward the second end. The cutting edges may include a plurality of long cutting edges and a plurality of short cutting edges. The long cutting edges include a first long cutting edge. N1 is the number of the short cutting edges located forwards in a rotation direction with respect to the first long cutting edge. N2 is the number of the short cutting edges located backwards, opposite the rotation direction with respect to the first long cutting edge. And, N1 is different from N2.

When a closed type impeller is manufactured from one block, a rough cutting process of cutting a flow path region of a block using a rough cutting tool, and a residue-cutting process of cutting a cutting residue in the cutting process using a residue-cutting tool are executed. The residue-cutting tool has a tool main body having a blade formed on an outer periphery thereof, and a handle having the tool main body fixed to a distal end thereof. A maximum outer diameter of the tool main body is larger than a minimum outer diameter of the handle. Further, the tool main body has a rear blade directed in a direction including a tool rear side component.

In a method of setting heat-resistant alloy cutting conditions used to set cutting conditions under which a heat-resistant alloy is cut with a cutting tool, the cutting tool has a long shaft mounted on a spindle and extended in the axial direction and teeth formed on the shaft. The cutting conditions include a radial direction cutting amount of the cutting tool in the radial direction. When the radial direction cutting amount in which one tooth is constantly in contact with the heat-resistant alloy is given as a smallest radial direction cutting amount and the radial direction cutting amount in which three or more teeth are not in contact with the heat-resistant alloy is given as a largest radial direction cutting amount, a radial direction cutting amount of the cutting tool is set in the range from the smallest radial direction cutting amount to the largest radial direction cutting amount.

A method for processing a workpiece with a tool is provided with holding the workpiece, holding the tool, and moving the held tool relative to the held workpiece in accordance with an NC program including an arithmetic expression to calculate a position of the held tool.

The present invention provides a burr in the form of a generally cylindrical rod, the burr having a proximal end for mounting in a tool for rotating the burr and a distal cutting end, the burr having a cutting portion defined by a portion of a surface of the burr which comprises a plurality of teeth, the cutting portion including and extending from the distal end back towards the proximal end, wherein the cutting portion comprises a cylindrical portion of a first diameter and a distal end portion of a second diameter that is greater than the first diameter. The burr is particularly suited to the drilling of cylinder locks.

It is an object of the present invention to provide a rotary cutting tool that can divide chips at an appropriate size, suppress the incidence of edge chipping and damage attributed to chips to the cutting tool and a workpiece, extend the tool service life with regard to the machining of hard, brittle materials, and improve machining efficiency. The rotary cutting tool includes a hard coat film 3 coated onto a tip end section of a tool body 1 having a chip discharge groove 2. A rake face 6 is concavely provided in a cutting edge-side chip discharge groove formation surface 4 constituting the chip discharge groove 2 of the tool body 1, from a cutting edge 5 and along the cutting edge 5.

A method for manufacturing a dental or medical tool the method comprising the steps of positioning a pre-fluted blank 14 including a stem 24 and a shank 22 within a machine 30, using a probe to identify a position and/or an orientation of at least one flute 26 of the pre-fluted blank 14 and/or the position and/or orientation of an orientation indicator 28 of the pre-fluted blank 14, and using the machine 30 to form a cutting end region 36 at the end of the stem 24 of the pre-fluted blank 14 remote from the shank 22, the flute 26 extending into the cutting end region 36, the machine 30 being controlled to ensure that the cutting end region 36 is correctly orientated relative to the flutes 26 of the pre-fluted blank 14.

A cutting tool according to one aspect of the present disclosure includes a substrate and a diamond layer coating the substrate. A cutting tool according to one aspect of the present disclosure includes a rake face, a flank contiguous to the rake face, and a cutting edge configured by a ridge formed by the rake face and the flank. The rake face has a first rake face and a second rake face located between the first rake face and the flank. The second rake face and a surface of the substrate located on the side of the rake face form a negative angle. The second rake face is formed at the diamond layer.