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WO/1997/004909A1 |
Apparatus is described for surface finishing complex and simple surface shapes by abrasion of select zones of the surface, leaving contiguous zones unfinished. The apparatus (50) is simple in construction and requires little in training ...
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WO/1996/040472A1 |
Method and apparatus for forming the longitudinal edges (66) of stacks of razor blades (60) by conveying the stacks of razor blades along a conveying path (28) in a vacuum chamber (34) past material deposition and material etching statio...
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WO/1996/033045A1 |
The present invention relates to a grinding cup (10) and a wear part (12) for grinding of cutting inserts of a rock drill bit. The grinding cup (10) is provided to be rotatably mounted in a grinding machine. The grinding cup (10) is prov...
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WO/1996/032225A1 |
The invention is a sharpener for a knife of a food slicer. The sharpener includes a base assembly (18) and a sharpener assembly (12). The base assembly includes a lever (28) mounted thereto on a pivot; the lever carrying a cam member (30...
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WO/1996/023627A1 |
The present invention relates to improvements in devices for use as grinding cups (30) for grinding the hard metal pins or working tips of drill bits and more specifically, but not exclusively, for grinding the tungsten carbide cutting t...
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WO/1996/017708A1 |
A hob cutter (4) for machining face or crown gears comprises a disc-like cutter body having an axis of rotation (6) and a number of hob teeth groups (1, 2, 3, ...) which are uniformly distributed over the circumference and which are each...
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WO/1996/017710A1 |
The invention concerns a method and a device for regrinding straight and helically grooved tools by means of a positioning head which is provided with a feeler pin which engages in a groove and is disposed in front of the grinding disc i...
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WO/1996/015874A1 |
The present invention relates to a grinding cup (10; 10'; 10") that is intended to be mounted in a grinding machine. The grinding cup (10; 10'; 10") carries out grinding of buttons of a rock drilling bit. The grinding cup (10; 10'; 10") ...
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WO/1996/005020A1 |
A blade sharpening device (8) easily connectable to a source of rotating power, such as a battery powered hand drill (66), and having a guard member (14), a selectively locatable handle member (16/16') attached to the guard member, and h...
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WO/1996/000635A1 |
For producing a hob for machining a face gear, said hob being regrindable through grinding of the cutting faces (3), and comprising a number of cutter tooth rows (8) which are evenly distributed over the periphery and which are each boun...
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WO/1995/031315A1 |
A shaving system (10) of the wet shave type includes support structure (12) and blade structure (22) secured to the support structure (12). The blade structure (22) has an aperture (20) with an annular sharpened shaving edge (30) that is...
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WO/1995/029789A1 |
A sharpening device (2) for sharpening the teeth (131) of a rotary blade (130) is described in which the device (2) comprises a substantially planar base (4) to which is pivotally attached a back plate (10) containing a number of compone...
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WO/1995/028254A1 |
The invention relates to a method and apparatus for sharpening tools, particularly hand instruments used in dental care. The apparatus comprises a fixed base (19) and a rotary plate (14) fitted thereon, a grinding stone (10) pivoted on a...
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WO/1995/023672A1 |
A drill bit sharpening adapter (25) for use with a powered grinding tool has a rear body part (26) for engagement with the tool, and a front body part (27) slidably adjustably movable towards the rear body part and mounting a rotatable d...
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WO/1995/016544A1 |
The present invention relates to a method and a device for grinding buttons of a rock drilling bit, said device including a grinding head (10), a rotatable grinding spindle (56) protruding from the grinding head (10), the free end of the...
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WO/1995/016545A1 |
Means for producing reciprocatory movement of a vice carrier (18) across a guideway (17) mounted on a body moulding (11, 16), which partly shrouds a rotatably driven grinding wheel (14), comprise a rack moulding (57) having upper and low...
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WO/1995/013894A1 |
The present invention provides a method of surface decarburizing a cemented carbide cutting tool. The tool is placed in a protective environnement. The tool is heated to an elevated temperature of between 600-1100 degrees C while in the ...
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WO/1995/005920A1 |
Sharpening machine for sharpening of cutting edges of instruments, e.g. dental instruments. The machine comprises a rotating grinding disk with supports that makes it possible to reproduce inner and outer grinding facets with close accur...
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WO/1995/001239A1 |
A method of sharpening face-sharpened cutting blades for gears and the like comprising engaging a rotating grinding wheel (40) and the cutting blade in a manner whereby the grinding wheel (40) traverses across the cutting face (12) along...
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WO/1995/000290A1 |
The present invention relates to a method for supplying cooling medium to a grinding cup (10; 10'; 10") for grinding buttons of a rock drilling bit. The invention also relates to a grinding cup (10; 10'; 10") to carry out the method. In ...
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WO/1994/019151A1 |
A method of sharpening cutting blades of the type made from bar stock type material, the method comprising producing relief surfaces on the cutting profile surface. The method comprises forming first and second relief surfaces (95, 96) o...
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WO/1993/025346A1 |
This invention relates to a vibration dampening grinding cup (1) for handheld grinding machines for the grinding of hard metal buttons on button bits, comprising a grinding head (2) and a shaft (3) made with a common axial channel (4) fo...
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WO/1993/022101A1 |
Disclosed herein is a method of truing and angling the blades of a form-relieved face mill cutter during the blade sharpening process thus eliminating a separate time-consuming procedure for truing and angling. The position of the cuttin...
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WO/1993/020682A1 |
The invention relates to a process for sharpening the blades of cutting devices with counter-cutter, especially for choppers used in agriculture. Owing to the spatial and temporal separation of the sharpening of the blades and the settin...
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WO/1993/018720A1 |
A grinder for dental treatment instruments in which the treatment instrument is secured in a cassette (2) and mentioned on an instrument code indicates to the electronics (6, 7 and 8) in the grinder which instrument is used. The data the...
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WO/1993/017827A1 |
Edge tool sharpening apparatus for the sharpening of an edge tool comprising a shank (e.g. a wood drill bit), said apparatus comprising: an axially rotatable abrasive element having a peripheral abrasive surface, and support means compri...
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WO/1993/014903A1 |
A grinding tool has a mains or battery powered motor (40) within its casing (16), the casing being snap-fitted to a base (14), the motor driving a rotatable shaft (39) carrying a grinding wheel (20; 102; 157) or a spur gear (184), and th...
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WO/1992/009395A1 |
A tool for producing crown wheels by means of a generating process comprises a disc which is rotatable about its axis, with machining elements which are provided on the periphery thereof and the cutting edges of which lie in the outer su...
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WO/1992/009403A1 |
Described is a device for sharpening dental, periodontal and/or surgical instruments. The device has a sharpening element (48) with a sharpening surface, the sharpening element being mounted on a support construction (36) consisting of g...
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WO/1992/006819A1 |
In order to provide an improved tip form for a twist drill, a jig is provided for a grinding machine, comprising a drill holder (38) and a mount (34). The holder and mount provide a mechanism whereby, as the drill and holder are rotated ...
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WO/1992/003256A1 |
An abrading device (10) comprising a housing (12) to provide a reservoir (14) for cooling fluid, an abrading wheel (15) mounted in the housing (12) for rotation about a substantially horizontal axis, first means (18) to direct cooling fl...
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WO/1992/000833A1 |
A ski grinding device and method comprising a holder having an adjustably sizable frame and a plurality of biasing legs disposed to engage the ski and maintain it in a flattened position. By holding the ski flat, the running surface can ...
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WO/1991/018709A1 |
A grinding process and wheel (2) are disclosed wherein any or all surfaces of a cutting blade (12) may be generated in a continuous grinding operation utilizing a single grinding wheel having a simple profile (4). A grinding wheel (2) ha...
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WO/1991/013733A1 |
An apparatus for providing longitudinal, laterally spaced slits in a continuously moving sheet or web of corrugated paperboard (13) or the like includes a plurality of upper tool heads (12) each supporting a thin, circular rotary slittin...
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WO/1991/004819A1 |
A cutter for producing face gears, comprising a disc-shaped cutter body with cutting teeth (23) fitted on the periphery. The cutting edge (24) of each cutting tooth lies in a surface of revolution which is produced by turning an imaginar...
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WO/1991/004132A1 |
This knife sharpening machine comprises a supporting framework (2), means (3) of holding a knife (C) on the framework (2) at a sharpening section (4), a pair of disk grinders (10) acting on the knife at the sharpening section (4) from op...
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WO/1990/013395A1 |
The results given by prior art grinders give deteriorating results even if a new grinding component is used and even after a very short time. To make an improvement here, the invention provides for the rotating grinding components to be ...
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WO/1990/013396A1 |
A tool holding jig for a grinding machine has a tool holder (29) mounted on a parallelogram linkage having lower swivel rods (19) inclined slightly so that, as the tool holder (29) is rocked to and for across the face (31) of a grinding ...
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WO/1990/008011A1 |
In a device for machining workpieces, in particular tools, for example for grinding drills, having a machining device, for example a double grinding unit, and a tool-holder associated with the latter, a basic frame (6, 106) which guides ...
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WO/1990/004495A1 |
The machine tool comprises a spindle unit (13) mounted rotatably around a linear guide (12) secured at a right angle to the rotation axis of the spindle (14) and parallel to the base of a turntable (9), and a system of levers comprising ...
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WO/1990/003455A1 |
A method of forming or modifying the cutting edges of razor blades, and apparatus for carrying out the method. The method comprises subjecting a stack of razor blades (12) to ion bombardement from two ion sources (13, 14) in a vacuum cha...
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WO/1990/002629A1 |
The object of the invention is a sharpening device for the blade of a cross-cutting roller (1), in which the cross-cutting roller (1) includes at least one blade plate (4), which is located in the angle formed by the two machined surface...
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WO/1989/012529A1 |
A blade sharpener (10) comprising a frame (12) with a clamp (76) and a guide means (48) moveably attached to it, to allow rotation of the clamp (76) about an axis (102), and raising and lowering of the guide means (48), both with respect...
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WO/1989/011937A1 |
The apparatus is provided with an abrasive medium (15) disposed above a track along which the band saw (2) is conducted under operating conditions and whereby a relative motion between the band saw (2) and the abrasive medium (15) can be...
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WO/1989/010778A1 |
The ski sharpener comprises an abrasive disc (30) which is rotated by a motor (20), the disc being biased to a position where it is proud of a guide surface (9) by means of which the sharpener is guided along the ski. The biasing of the ...
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WO/1988/009240A1 |
This invention relates to a cutting tool grinding machine, in which rules can be regulated simply and efficiently so that a contact angle and a grinding rate of a cutting tool grinding surface suit a surface to be processed. In order to ...
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WO/1988/008358A1 |
In an appliance for sharpening cutting implements, such as knives and scissors, a rotary grinding wheel is accommodated between two integrally mounted half-blocks (1, 2) each having in its upper part a groove inclined obliquely to the pl...
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WO/1988/003452A1 |
An electrical discharge machine uses a graphite electrode (12) to machine a workpiece at a high metal removal rate. When the graphite electrode (12) becomes worn index table (1), which supports the workpiece, uses slide mechanism (4) to ...
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WO/1987/006868A1 |
A device (20) for movement along the bottom surface (22B) of a snow ski (22) to grind a varying bevel in the bottom edges of the ski in direct relation to the width of the ski. The device utilizes a pair of grinding wheels (34), which ar...
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WO/1987/004962A1 |
Sharpening means comprising abrading means (31, 39, 34) providing a rotatable cyclindrical abrading surface (34), means (32, 33) to support a twist drill to be sharpened with its axis (X2-X2) intersecting a rectilinear generatrix of said...
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