THYSSENKRUPP ROTHE ERDE GMBH Patent applications |
Patent application number | Title | Published |
20150368735 | METHOD FOR INDUCTION SURFACE HARDENING OF A RING SURFACE - The invention relates to a method for the induction surface hardening of a ring surface of a workpiece, the ring surface and a hardening device having an induction coil being moved relative to one another in a treatment direction in a feed mode. A sprinkler is located downstream of the induction coil when seen in the direction of treatment and serves to heat the ring surface, starting from an initial zone to a final zone, by means of the induction coil and then to harden it by cooling the ring surface by means of the sprinkler, an unhardened soft zone being provided between the initial zone and the end zone. According to the invention, the supplementary induction coil, the induction coil and the sprinkler are activated and deactivated separately from one another at the start of the hardening process and at the end of the hardening process, respectively, the speed between the hardening device and the workpiece and/or the power supplied to the supplementary induction coil and the induction coil being varied at the same time. | 12-24-2015 |
20150364247 | PLANAR INDUCTOR - The present invention relates to a planar inductor for progressive case hardening, comprising a carrier and an induction coil, which is accommodated by the carrier and exposed on a first side of the carrier and which is in the form of a conductor loop. According to the invention, the inductor comprises two spacing elements, which are space apart from one another and inserted into the carrier and which protrude from the carrier and beyond the conductor loop on the first side. The invention further relates to a preferred method for producing the planar inductor. | 12-17-2015 |
20150362009 | CYLINDRICAL ROLLER BEARING - The invention relates to a cylindrical roller bearing for absorbing axial and radial forces, comprising a first bearing ring and a second bearing ring, which are arranged concentrically about an axis of rotation extending in the axial direction (x), wherein the second bearing ring has a groove, which is open in a radial direction and in which a projection of the first bearing ring engages, wherein a first radial bearing row and two axial bearing rows spaced in the axial direction are arranged between the projection and the groove, wherein the first radial bearing row supports the first bearing ring against the second bearing ring in a first radial direction and wherein a second radial bearing row is provided, which supports the first bearing ring against the second bearing ring in a second radial direction that is opposite to the first radial direction. According to the invention, the first bearing ring is divided in the axial direction into at least one first ring part having the projection and one second ring part, wherein the second radial bearing row is arranged between the second ring part and the second bearing ring at an axial distance from the projection. | 12-17-2015 |
20150016762 | METHOD FOR PRODUCING A ROLLING BEARING CAGE FOR AN AXIAL-RADIAL ROLLING BEARING AND AXIAL-RADIAL ROLLING BEARING - The invention relates to a method for producing a rolling bearing cage for a rolling bearing comprising at least one row of rolling elements. In the method according to the invention, a ring or a ring element made of a metallic solid material is provided and shaped by a forming process and/or a cutting, material-removing process into an annular or segmented main body of the rolling bearing cage. The main body has openings for receiving a respective rolling element, the main body being heated to a temperature above a minimum coating temperature for thermal coating with a thermoplastic material powder, wherein the main body is then immersed in a fluidized bed containing the thermoplastic material powder, wherein thermoplastic material powder adheres to the main body, melts and forms a contiguous coating while the main body is present in the fluidized bed, and wherein, after the coating, the main body is removed from the fluidized bed. The invention further relates to an axial-radial rolling bearing with the described rolling bearing cage. | 01-15-2015 |
20140367376 | METHOD AND ARRANGEMENT FOR PROGRESSIVE SURFACE HARDENING - The invention relates to a method for the progressive induction surface hardening of a closed curve trace of a workpiece, the closed curve trace and a hardening device being moved relative to one another in a feed mode to harden the closed curve trace starting from an initial zone to an end zone, an unhardened soft zone being provided. According to the invention, the workpiece is provided with a marking, the hardening device having a sensor for detecting said marking. The curve trace and the hardening device are moved relative to one another along the treatment direction until the senor detects the marking. Once the marking is detected, another movement takes place in the treatment direction before the hardening device is activated, the curve trace being hardened by the relative movement. The marking is again detected by means of the sensor and the hardening device is then deactivated. The invention also relates to an arrangement which is suitable for carrying out the method described. | 12-18-2014 |