| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 029888080 | Crankshaft making | 11 |
| 20100101085 | Method Of Manufacturing A Crankshaft And A Half-Finished Crankshaft - To cope with requirements for strict accuracy of crankshafts while alleviating the task of controlling a forming process, a preliminary machining step (S | 04-29-2010 |
| 20110005074 | MACHINE AND METHOD FOR MACHINING CRANKSHAFT ENDS - The present invention relates to a machine for machining crankshaft ( | 01-13-2011 |
| 20130232791 | CRANKSHAFT AND METHOD FOR PRODUCING THE SAME - In a crankshaft | 09-12-2013 |
| 20140325838 | Machine and Method for Turning at Least Flat Shoulders on a Crankshaft that Surround Crankpins - A crankshaft including narrow flat shoulders that are located next to a bearing pin at adjacent cheeks of the crankshaft. The narrow flat shoulders are machined by turning a rotary tool. In the process, the crankshaft that is clamped in a fixed manner and rotates about a rotation and clamping axis in which also the centric longitudinal axis formed by centric bearing pins of the crank shaft is located. As a result, the bearing pins rotate with a geometric axis thereof on a circular path about the rotation and clamping axis. The rotary tool tracks the moving bearing pins with regard to the vertical and lateral movement thereof in two movement directions that are perpendicular to each other. As a result, the rotary tool is in consistent lateral engagement with the flat shoulder of the bearing pin. | 11-06-2014 |
| 20140373351 | PROCESS FOR PRODUCING FORGED PRODUCT - A forging process is conducted in a temperature range of 350-600° C. on at least a portion that is required to have a fatigue strength in an intermediate forged product having a ferrite and pearlite texture obtained by conducting a hot forging on a steel in which N is not greater than an amount at which N is unavoidably dissolved as a solid, thereby improving strength of the portion that is required to have a fatigue strength. With this, there is provided a forged product having a good strength and a low price. | 12-25-2014 |
| 20150074998 | METHOD FOR IMPROVING THE QUALITY OF THE SURFACES OF CRANKSHAFTS - The invention relates to a method for machining surfaces of the bearing seats of main and pin bearings on crankshafts made of cast steel following the machining of surfaces with an undefined cutting edge by grinding or finishing. The problem of improving the quality of the running surfaces of the bearings of hardened or unhardened crankshafts is solved. This is achieved by irradiating the surfaces with a laser beam. | 03-19-2015 |
| 20150121696 | METHOD FOR MANUFACTURING ROD-LIKE COMPONENT - A method for manufacturing a crankshaft with a turning and broaching machine is provided with a temporary setting process, a lifting process, a centering process, and a clamping process. An unprocessed crankshaft is mounted on first and second temporary settings in the temporary setting process. A rear flange is lifted by a first chuck jaws and a front flange is lifted by a second chuck jaws in the lifting process. First and second centers are inserted into first and second center holes in the centering process. | 05-07-2015 |
| 20150128416 | METHOD OF MANUFACTURING DIE FORGED CRANKSHAFT - A method of manufacturing a die forged crankshaft to be mounted in a two or more cylinder reciprocating apparatus includes: an upsetting step that includes upsetting a billet having a constant cross-sectional area along an entire length thereof to form a blank having an enlarged cross-sectional area at a region between a portion to be formed into a leading crank arm of the crankshaft and a portion to be formed into a trailing crank arm thereof; a die forging step that includes die forging the blank formed in the upsetting step to form a forged blank having a shape of the crankshaft with a flash; and a trimming step that includes trimming the flash from the forged blank formed in the die forging step. This makes it possible to improve the material utilization and to use a billet having a cross-sectional size as small as possible. | 05-14-2015 |
| 20150336164 | Method of Eliminating the Heat-Affected Zone in a Welded Article - 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. | 11-26-2015 |
| 20160250679 | METHOD FOR PRODUCING A FORGED CRANKSHAFT | 09-01-2016 |
| 20190143398 | LASER-HARDENED FILLET-ROLLED CRANKSHAFT | 05-16-2019 |
