Class / Patent application number | Description | Number of patent applications / Date published |
029600010 | CRANKSHAFT MAKING APPARATUS | 11 |
20100146753 | Method for Increasing the Strength of a Part - In a method for increasing the strength of a component subjected to torsional and flexural stress, in particular of a crankshaft, in a first step essentially the entire component is provided with a nitriding layer. In a second step, the nitriding layer is at least partially removed in at least one highly stressed region of the component by means of cutting machining, and, in a third step, the at least one highly stressed component region freed of the nitriding layer is mechanically strain-hardened. | 06-17-2010 |
20100242241 | PRODUCTION APPARATUS AND PRODUCTION METHOD FOR CRANKSHAFT - The present invention provides a production apparatus for crankshaft, including: a die which has a lower die, an upper die, and plural side forming punches, the upper die being provided movably to the lower die, the side forming punches moving perpendicularly to a movement direction of the upper die; a press ram which moves the upper die to the lower die, closes a material of the crankshaft, and forms the material; cam mechanisms which are provided for the side forming punches and which move the side forming punches to an inside portion of the die in accordance with movement of the press ram; a grade separation structure which is provided to at least one of the side forming punches in order to prevent interference of the side forming punches with each other. | 09-30-2010 |
20110308052 | METHOD FOR PRODUCING CRANKSHAFT AND PRODUCTION APPARATUS THEREFOR - A preformed product of a crankshaft is formed in a shape smaller than a shape of a cavity of a separatable die set | 12-22-2011 |
20120096696 | Roller Burnishing Machine For Crankshafts - A deep rolling machine has a power unit ( | 04-26-2012 |
20120137480 | DEVICE FOR DEEP-ROLLING TRANSITION RADII ON CRANKSHAFTS - Disclosed is a device for deep-rolling transition radii ( | 06-07-2012 |
20120198671 | MACHINING DEVICE FOR MACHINING CRANKSHAFTS AND A MACHINING SYSTEM HAVING SUCH A MACHINING DEVICE - A machining device for machining crankshafts has a rotationally driven disk-shaped base body with blade inserts arranged peripherally thereon. A first supply line for a cryogenic cooling medium is arranged concentrically with the axis of rotation and is thermally insulated in at least some sections. The tool has a plurality of second supply lines for the cryogenic cooling medium running across the axis of rotation and leading to the blade inserts, the second supply lines each being thermally insulated in at least some sections. A distributor unit connects the first supply line to at least one of the second supply lines for supplying the cryogenic cooling medium to at least one of the blade inserts. The cryogenic cooling medium can be conducted directly to the blade inserts which are engaged with the crankshaft that is to be machined. | 08-09-2012 |
20140109364 | METHOD AND PRODUCTION LINE FOR MACHINING A CRANKSHAFT - A method for completely machining at least unprocessed centric journals ( | 04-24-2014 |
20140230206 | Method of Eliminating the Heat Affected Zone in a Welded Crankshaft - A method of manufacturing a crankshaft comprising providing two parts, each part comprising two webs, a portion of a crank journal and a portion of a main journal, welding the two portions of the crank journal together, heating the crank journal, inserting a shim between the webs, and upset forging to reduce the length of the crank journal to form a forged segment. Alternatively, the portions of the main journal may be welded, heated, shimmed, and forged to form a forged segment. The crankshaft may be lengthened by adding additional parts or forged segments using the same steps. A production line for carrying out this method when producing a crankshaft with n number of crank journals, where n is an even integer. | 08-21-2014 |
20150107069 | METHOD FOR END MACHINING AND MACHINE FOR THE METHOD - In order to prevent a subsequent imbalance of a finished crank shaft a work piece is rotated about an A-axis and a B-axis before introducing aligned centering bore holes (balanced centering) according to the invention instead of transversally offsetting the centering bore holes (geometric balancing) which is known in the art. | 04-23-2015 |
20150113778 | METHOD AND DEVICE FOR FINISHING WORK PIECES - In order to shorten a process chain for material removing machining of a crank shaft after rough machining and after hardening a combination of circumferential turn milling as a first step and subsequent dry grinding as a second step is proposed according to the invention. | 04-30-2015 |
20160082570 | METHOD AND TOOL FOR INCREASING THE STRENGTH OF SHAFTS, IN PARTICULAR OF CRANKSHAFTS - A method and compression roller tool for increasing the strength of load-bearing surfaces on shafts, in particular on crankshafts, which surfaces are pre-machined with the removal of chips, wherein the cylindrical surfaces of the main bearing journals and pin-bearing journals and optionally also the journal of crankshafts have additional oil bores. At least one of the load-bearing surfaces is compression-rolled by way of at least one cylindrical body which has a surface structure and extends over the width of the load-bearing surface. Afterwards, the compression-rolled load-bearing surfaces are machined with the removal of chips with a low chip depth. The compression roller tool consists of a cylindrical compression roller body and a supporting body opposite it, wherein the compression roller body has thickened portions on its cylindrical surface, which thickened portions run either in the circumferential direction or in the axial direction or diagonally with respect to the axial direction. | 03-24-2016 |