| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 451048000 | Drill, thread, thread cutter, reamer, or rotary cutter abrading | 16 |
| 20090104854 | Method for Relief-Grinding the Cutting Teeth of Taps, Thread Formers, and Similar Tools, and Grinding Machine for Carrying Out Said Method - In prior art, an additional radial inward movement that is performed in accordance with a rotating cam disk is imparted on the grinding disk in order to relief-grind the cutting teeth and the chamfer of taps and the cutting teeth of thread formers. The invention relates to a cam disk which can be rotated about an axis and is provided with a control cam. The control cam forms a group of curves according to a large number of possible undercut contours on the grinding teeth of the tap or thread former, which are to be relief-ground. In order to obtain a specific undercut contour on a cutting tooth, a limited angle of rotation is selected from the control cam. The area is mechanically, optically, or electronically scanned by means of a scanning device. To this avail, the cam disk performs an oscillating rotary movement only above the selected section of the control cam. Relief-grinding of the cutting tooth is completed once a fore-and-aft movement has been performed, and the grinding disk returns to the starting position thereof. The result of the scan is transmitted to an electronic control device via a signal line. | 04-23-2009 |
| 20090117831 | Method Of Manufacturing Treatment Device And Treatment Device - A tapered cutting edge portion and a continuous raised portion from the tapered cutting edge portion are ground in an edge portion of a straight grinding raw material so that an eccentricity is not generated. In a method for grinding a treatment device, one end portion of a tapered grinding raw material is inserted between a grinding surface of a grindstone and a pressing surface of a press block, and finishing surfaces opposite each other while having a predetermined dimension, shape, and angle are ground so that a direction in which abrasive grains of the grindstone run corresponds to a direction of a shaft center. At this point, before the finishing surfaces are ground in the predetermined dimension, shape, and angle which are previously set corresponding to an objective reamer, pre-grinding is performed while a necessary finishing margin with respect to at least one of the surfaces, and then finishing grinding is performed to the other surface. | 05-07-2009 |
| 20100048103 | Surface Treatment Method for Coated Cutting Insert - A surface treatment method can perform coated surface treatment on a cutting edge R and a rake surface, while maintaining a radius of curvature of the cutting edge R and uniformly surface-treating the rake surface. The surface treatment method includes providing an opening chamfered at comers adjacent to an upper surface of the fixture to the fixture for fixing a coated cutting insert; fixing the coated cutting insert inside the opening in such a manner that a rake surface of the coated cutting insert is disposed lower than upper surfaces of the fixture but higher than a lower edge created on the opening of the fixture by the chamfering; and conducting the surface treatment on a cutting edge R and the rake surface of the coated cutting insert. | 02-25-2010 |
| 20100062690 | METHOD OF GRINDING AN INDEXABLE INSERT AND GRINDING WHEEL FOR CARRYING OUT THE GRINDING METHOD - In an indexable insert having wide sides, inclined narrow sides are to be ground, that is to say the grinding allowance | 03-11-2010 |
| 20100248594 | SETUP TOOL FOR GRINDER SHARPENING JIGS - A tool for setting the grind angle for sharpening jigs accurately and repeatably positions a movable support arm so that a consistent angle is ground into chisels regardless of the grinding wheel diameter and particular chisel. | 09-30-2010 |
| 20110039478 | GRINDING COMPOSITION FOR SHARPENING SHREDDER BLADES, GRINDING SHEET AND GRINDING PRODUCT MANUFACTURED, AND RELATED MANUFACTURING PROCESS - A grinding composition for sharpening shredder blades of a shredder includes, based on total weight of the grinding composition, from 51 to 65 wt % of a grinding powder; from 5 to 35 wt % of a viscous grease agent; and from 3 to 30 wt % of at least one functional additive. A grinding sheet formed from the composition is used as a grinding product alone or in a bag. The composition is sealed in a bag and used as a grinding product. A process for manufacturing the latter grinding product employs an automatic form-fill-seal packaging machine. The shredder blades of a paper shredder are sharpened satisfactorily by the grinding composition as the grinding sheet or grinding product is shredded. The useful life of shredders is cost effectively extended while providing convenience in use that saves time and labor. | 02-17-2011 |
| 20110097976 | TWIST DRILL AND METHOD FOR PRODUCING A TWIST DRILL WHICH METHOD INCLUDES FORMING A FLUTE OF A TWIST DRILL - There is now provided a twist drill and a method for producing a twist drill which method includes forming a flute of a twist drill. The drill has drill material and a tip portion with a cutting lip. The drill has a land structure and a flute to remove chip residue. The land structure has a flute wall and a cutting edge structure that is disposed longitudinally along the flute wall. The cutting edge structure has a first portion at the drill tip portion and a second portion disposed away from the drill tip portion. The flute wall extends further into the land structure at the second portion of the cutting edge structure than at the tip portion to provide a greater amount of drill material at the tip portion than at the second portion of the cutting edge structure. The flute wall extends further into the land structure at the second portion of the cutting edge structure than at the tip portion to provide a greater flute volume per length at the second portion of the cutting edge structure than at the drill tip portion. The method provides for forming a drill with a grinding tool to form different angular transitions of the cutting edge structure. | 04-28-2011 |
| 20110171884 | DEVICE FOR SHARPENING A TWIST DRILL POINT AND A METHOD FOR ITS USE - A device for sharpening a twist drill pointby means of a rotating grindstone ( | 07-14-2011 |
| 20120045973 | METHODS OF FABRICATING A HONEYCOMB EXTRUSION DIE FROM A DIE BODY - Methods for fabricating a honeycomb extrusion die from a die body include the step of machining extrusion slots with at least one grinding wheel to provide a honeycomb pattern of extrusion slots. In further examples, a plurality of the extrusion slots of the honeycomb pattern of extrusion slots can be machined with a wire electrical discharge machining process after machining the plurality of extrusion slots of the honeycomb pattern of extrusion slots with the grinding wheel. | 02-23-2012 |
| 20120129434 | TOOL GRINDING MACHINE - A multi-axis computer controlled machine tool for relief grinding of single and multiple start threaded hobs ( | 05-24-2012 |
| 20120295519 | CUTTING TAP AND METHOD OF MAKING SAME - A method of making a cutting tap includes the steps of: grinding a blank to form a threaded body portion at an axially forward end of the cutting tap, grinding one or more flutes in the threaded body portion to form cutting edges; grinding the threaded body portion to form a first cutting thread and a second cutting thread, the first cutting thread at a first distance from the axially forward end of the cutting tap, and the second cutting thread at a second distance from the axially forward end of the cutting tap; and grinding a chamfer in the threaded body portion such that a thickness of a section of material removed from the second cutting thread is smaller than a thickness of a section of material removed from the first cutting thread during a tapping operation. | 11-22-2012 |
| 20130337726 | GRINDING MACHINE WITH MULTI-SPINDLE GRINDING HEAD - A tool head for a machine tool comprising a plurality of tool spindles with each tool spindle being rotatable about a respective tool axis. The plurality of tool spindles comprises at least a first tool spindle rotatable about a first tool axis, a second tool spindle rotatable about a second tool axis and a third tool spindle being rotatable about a third tool axis with the first, second and third tool axes being parallel to one another. The first, second and third tool spindles are arranged on the tool head whereby one of the first, second and third tool spindles faces a first direction and the other two of the first, second and third tool spindles face a second direction with the first and second directions being 180 degrees apart. The tool spindles are preferably grinding spindles on a machine for grinding bevel gear cutting tools. | 12-19-2013 |
| 20140030960 | PORTABLE POWER SHARPENER FOR HAND HELD ROTARY CUTTING BLADES - Apparatus, systems and methods related to sharpening blades for rotary cutters. In one illustrative embodiment, a power sharpener system secures a rotary cutting blade between upper and lower columns that form a rotating axle in contact with upper and lower sharpening stones, each positioned at an appropriate angle to contact a cutting edges of the rotary blade for sharpening. The upper column may be rotatably attached to an upper cover or lid and the lower column rotatably disposed in a base. After the rotary blade is secured, an electric motor is used to rotate the column, contacting the edges of the blade against the stones to simultaneously sharpen both edges of the blade. In some embodiments, a retractable plate may be disposed around the lower column for placement of the rotary blade thereon and a lifting lever may be used to facilitate blade removal. | 01-30-2014 |
| 20140213156 | METHOD FOR MODIFYING PLUNGE SHAVING CUTTERS - A method for modifying plunge shaving cutters aims to modify a plunge shaving cutter through a grinding tool. The plunge shaving cutter has a plurality of helical teeth spaced from each other. The helical teeth have a machining-intended side. The method of modification includes the steps of: positioning the plunge shaving cutter on a gear forming grinder with the machining-intended side in contact with the grinding tool; moving the plunge shaving cutter according to a variable rotation amount and a first variable movement amount; moving the grinding tool according to a second variable movement amount to perform a helical movement against the plunge shaving cutter and a modification process on the machining-intended side. Thus the existing gear forming grinder can be applied to the plunge shaving cutter for machining to improve machining speed. | 07-31-2014 |
| 20140273761 | BLADE HONING APPARATUS AND CUTTING APPARATUS INCORPORATING SAME - A honing apparatus includes a sharpening stone that has a sharpening surface configured to sharpen the edge of the blade upon engaging contact with the edge of the blade. A frame is operatively coupled to the sharpening stone, and a weight element is supported by the frame and positioned so as to urge the sharpening stone toward the edge of the blade. The frame may be pivotally coupled to a fixed element at a pivoting location, and the weight element may be positioned so as to create a moment about the pivoting location, with the moment urging the sharpening stone toward the edge of the blade. | 09-18-2014 |
| 20160167188 | COLLETS AND TOOL HOLDER ASSEMBLIES EMPLOYING THE SAME | 06-16-2016 |
