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7415978 |
Assembly and a method for cutting or forming an object
A method and an apparatus 10 for cutting an object 64, such as a grinding wheel. Particularly, the object 64 is placed in a horizontal manner and concomitantly rotated with the cutter 14 during the...
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6981909 |
Method for conditioning superabrasive tools
A method for conditioning a superabrasive grinding tool having a cutting surface includes truing the grinding tool by moving the cutting surface against a truing device to shape the cutting surface...
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6884151 |
Method and apparatus for forming grooves on a workpiece and for dressing a grindstone used in the groove formation
A grinding apparatus for grinding a spline ball groove on a workpiece comprises a rod-shaped grindstone, having a distal end portion with a curved surface corresponding to the groove to be ground,...
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6869342 |
Dressing of grinding tools for gear grinding
A dressing apparatus (20) attached to a dressing pedestal (25) of a tooth flank grinding machine is maneuverable by means of an advancer device (27) from a dust proof position of rest aside of the...
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6827071 |
Wheel dresser for grinding wheel
A dresser wheel mounted on the column of a grinder is presented. The dresser has an x-axis adjustment for positioning the diamond tool along the x-axis and a y-axis adjustment mechanism attached to...
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6827072 |
Dressing wheel and method of making same
A dressing wheel has a disk-shaped base body centered on an axis and formed with an annular groove also centered on the axis and having an inner surface. A multiplicity of abrasive elements...
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6807960 |
Tool for dressing pulpstones
A burr is provided for dressing a grinding tool, such as the grinding surface of a pulpstone grinding tool used for mechanical preparation of wood pulp. The burr includes a cylindrical body...
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6783428 |
Method for forming grooves on workpiece and for dressing a grindstone used in the groove formation
A grinding apparatus for grinding a spline ball groove on a workpiece comprises a rod-shaped grindstone, having a distal end portion with a curved surface corresponding to the groove to be ground,...
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6699105 |
Method and apparatus for cutting and grinding single crystal SiC
The present invention comprises a metal bond grind stone having a flat plate portion 10a and a tapered portion 10b; an electrode 13 opposed to the metal bond grind stone with a gap therebetween;...
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6551177 |
Forming device for bevelling
A forming device (100) for bevelling includes a base (102), a rail (104), a workbench (106) and a bar (108). A pair of support arms (114) extends upwardly from the base. An axle (120) is received...
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6537139 |
Apparatus and method for ELID grinding a large-diameter workpiece to produce a mirror surface finish
A flat workpiece 5 (silicon wafer) is driven so as to rotate in horizontal by a workpiece driving device 12. A cylindrical conducting grindstone 14 is provided, the outer periphery of which is in...
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6361410 |
Grinding apparatus for forming grooves on a workpiece and a method for dressing a grindstone used in the apparatus
A grinding apparatus for grinding a spline ball groove on a workpiece comprises a rod-shaped grindstone, having a distal end portion with a curved surface corresponding to the groove to be ground,...
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6332833 |
Method for fabricating silicon semiconductor discrete wafer
A method of fabricating a silicon semiconductor discrete wafer while dressing the grinding wheel is disclosed that assures excellent finishing accuracy and productivity. The dressing of the...
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6176762 |
Method of cutting a ceramic base plate
A method for cutting a ceramic base plate with which the process efficiency is improved, a stable cutting resistance can be maintained during the cutting process, and excellent process precision...
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6116989 |
Apparatus for dressing a grinding disc
A skate sharpening apparatus is disclosed having top surface (20) and a grinding disc (21) rotatable about a vertical axis above the surface. A bearing body (23, 28) having a free slide support...
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5954568 |
Method, tool and device for the profiling of grinding worms for continuous gear grinding
The profiling tool (10) has a segment (12) of a worm thread. Its active zone (13) is coated with grains of hard material (16) and is crowned in cylinder sections coaxial to the tool axis (26)....
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5660579 |
Method and apparatus for forming a grinding wheel
The metal bond wheel forming apparatus includes rotation speed control means 11 for controlling the rotation speed of a grinding wheel 6; energy control means 9 for controlling discharge energy...
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5622526 |
Apparatus for trueing CBN abrasive belts and grinding wheels
A trueing wheel for trueing an abrasive belt or wheel having cubic boron nitride abrasive particles. The trueing wheel has a radially outer peripheral surface which slopes at an acute angle with...
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5578222 |
Reclamation of abrasive grain
The invention provides a process for recovering abrasive grains from vitreous bonded materials by boiling the material in an aqueous solution of an alkali metal base.
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5535732 |
Diamond-studded tool for dressing grinders, with a cone-shaped rolling means, on an oblique axis
Tool (10) with diamonds (35) (35') (36) for dressing grinders (90) having a roller (11) rotating on a supporting shank (20) round an axis that intersects the axis of the shank (20) at an angle of...
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5497759 |
Driving apparatus for a diamond toolholder
The single-motored apparatus includes a motor which rotatingly drives a main shaft and a correction shaft, the main shaft in turn rotatingly driving the diamond toolholder, a clutch for coupling...
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5441449 |
Integratable grinding wheel dresser
A grinding wheel dresser, integratable with a grinding apparatus and useable to repeatedly dress the face of a grinding wheel to a selected contour in alternation with use of the grinding wheel,...
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5411431 |
Method for crown gear grinding by generation
Crown wheels (21) are ground on a grinding machine with the aid of a hobbing grinding disc (11) of ceramic material which is formed on the same grinding machine with the aid of a dressing crown...
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5373666 |
Grinding wheels for the machine working of marble and granite
A shaped diamond wheel, at certain height, determined by both the type of grinding wheel which is being used and the working stage, is provided with a rotating feeling pin, consisting of a metal...
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5363598 |
Machine tool capable of grinding a workpiece with a truing apparatus
A machine tool having a grinding wheel for grinding a workpiece mounted on a table. The machine tool is provided with a truing apparatus for truing the grinding wheel and a measuring device for...
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5235959 |
Arrangement and method for regenerating rotating precision grinding tools
The invention is directed to an arrangement for regenerating rotating precision grinding tools with a dressing tool and with a loose abrading medium suspended in a liquid and introduced into a gap...
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5177901 |
Predictive high wheel speed grinding system
This invention is a new high wheel speed grinding process that uses only one very hard grade resin bonded grinding wheel of the desired abrasive grit size for the surface finish required, where...
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5168671 |
Dressing method and apparatus for super abrasive grinding wheel
A method and apparatus for removing clogging material from between abrasive grains of a grinding wheel. A pressurized blasting fluid is supplied to a blasting gun, which in turn sucks an abrasive...
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5146909 |
Stationary fine point diamond trueing and dressing block and method of use
There is provided a tool for trueing and dressing a variety of grinding wheels, comprising a metal block having a thin vertical layer of diamond particles forming a contacting surface. The tool may...
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5138799 |
Probe positioning mechanism for a radius dresser
The present invention relates to systems and methods of controlling the dressing operation of computer numerically controlled grinding machines. A contact probe is positioned relative to a dresser...
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5139005 |
Universal dressing roller and method and apparatus for dressing cup-shaped grinding wheels
A tool, for dressing both the inside and outside working surfaces of cup-shaped abrasive wheels used for grinding gears, is disclosed along with methods and apparatus for using the tool. The...
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5119599 |
Diamond dressing unit for grinding wheels
A dressing unit for advancing and retracting a spindle, having a diamond roll rotatably mounted thereon, wherein advancement of the spindle brings the diamond roll into contact with a grinding...
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5113624 |
Grinding non-metallic hard materials
In one method of cross-grinding in accordance with the present invention a non-planar surface on a workpiece, of a non-metallic material having a Vickers hardness value up to 5000, comprises, in...
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5097632 |
Machine tool having workpiece machining dimension and tool length measuring functions
A numerically controlled machine tool, such as a grinding machine, is capable of machining a workpiece with a precise dimension by measuring a workpiece machining dimension and/or a tool length....
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5033447 |
Support apparatus
A clamping apparatus for mounting and positioning a diamond type dressing stone in proximity to a grinding wheel is provided to permit adjustable orientation of the dressing stone relative to the...
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5008509 |
Production method of honeycomb die-forming electrical discharge machining electrodes and production method of honeycomb dies
A method of making a honeycomb die by using an electrode with parallel grooves in an electrical discharge machining process. The parallel grooves in the electrode are formed by a grinding wheel...
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5006685 |
Machine tool with grinding function and truing/dressing method of grinding stone using it
A machining tool with an electric discharge truing and dressing apparatus comprising a spindle stock for containing and supporting a workpiece spindle which is driven for rotation while holding a...
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4984390 |
Grinding disc dressing apparatus
A grinding disc dressing apparatus for dressing an active grinding side or surface of a grinding disc of a surface grinding machine includes feed means for moving a dressing roll between an outer...
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4953522 |
Method of dressing grinding wheels in grinding machines
A grinding wheel with a working surface having a complex profile is subjected to a path-controlled dressing operation by an apparatus which moves in the direction of the Z-axis of the machine while...
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4947598 |
Method for grinding the surface of a semiconductor wafer
A dresser made of bonded alundum-type abrasive is ground by a rotating blade made of bonded super abrasive to dress the blade. The surface of a semiconductor wafer is ground by the rotating dressed...
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4936051 |
Method and device for trimming grinding wheels
In order to eliminate the need, during operation, to continually redefine the grinding line (SL 2) between the trimming wheel (12) and the gripping wheel (10), and the need to re-zero the C-axis...
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4930486 |
Blade cutting method for hard brittle material
A method is provided for effectively and precisely cutting metals, ceramics, composite materials and the like by use of a blade having an elongated metal band body and a conductive abrasive layer...
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4926836 |
Method of and apparatus for dressing cutting edge of cut-off wheel
A dressing apparatus includes: a first body extending parallel to the axis of the cut-off wheel, the first body having a slider member slidable along the longitudinal axis of the first body, the...
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4924842 |
Optimization method and apparatus for dressing a grinding wheel
An optimization method of dressing a predetermined profile on the periphery of a grinding wheel of the type used in form grinding. A dresser is guided along a path corresponding to the...
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4920704 |
Grinding wheel containing dissolvable granular material
A grinding wheel for use in precision wet grinding which involves the use of a water soluble based coolant. The grinding wheel includes a mix of at least an abrasive and a resin and also an...
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4920945 |
Method for dressing grinding wheels
A method serves for dressing grinding wheels (10) whose surface (16) comprises an embedding compound for CBN crystals. A rotating dressing roll (11) is moved along the surface (16) of the grinding...
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4920946 |
Blade cutting apparatus for hard brittle material
Apparatus is provided for effectively and precisely cutting metals, ceramics, composite materials and the like by use of a blade having an elongated metal band body and a conductive abrasive layer...
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4903679 |
Dressing of grinding wheels
In a method for dressing a grinding wheel (2) by advancing a diamond nib (6) adjacent the outer circumference of the wheel (2) while the wheel (2) rotates about its axis, which method includes...
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4902305 |
Semi-cylindrical metal polishing element
A metal polisher 1 is semi-cylindrical in shape to permit polishing a protruded or a recessed surface portion of a workpiece. A number of grooves 4 are formed circumferentially on a surface on...
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4892082 |
Dressing roll and method for producing the same
A dressing roll comprises a revolving circumferential surface, in particular two conical circumferential surfaces (12, 13) intersecting each other along an outer circumferential line (14). The...
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