Class / Patent application number | Description | Number of patent applications / Date published |
072084000 | Using tool having rotating surface moving along it axis of rotation during deformation | 12 |
20090126437 | Closing Method and Closing Machine - A closing machine ( | 05-21-2009 |
20090133458 | Closing Method and Closing Machine - In a closing machine ( | 05-28-2009 |
20090255309 | Spinning method for forming pipe end - When the necked portion is formed at the end of the pipe material by the spinning method, working rollers are restricted so as to return immediately before the pipe end instead of being allowed to axially move beyond the end of the working object pipe. The diameter reduction amount of the pipe end is set smaller than that of the most diameter reduced portion connecting to the pipe end. A protruding portion of so-called bellmouth shape is formed at the working end, thereby preventing generation of fractures originated from the working end of the base portion or the welded portion and generation of wrinkles during the spinning. | 10-15-2009 |
20090288464 | METHOD FOR PRODUCING WORKPIECES - A method for producing workpieces wherein a generally cylindrical preform ( | 11-26-2009 |
20090301154 | METHOD AND APPARATUS FOR SHAPING A RIM OF A THREE-DIMENSIONALLY ARCHED SHEET METAL - Method for shaping a rim of a three dimensionally arched sheet metal, wherein the sheet metal is placed on a female die provided with a chamfer which follows the contour of a peripheral edge of the rim, the rim spanning the chamfer, and a male roller die is rolled on the sheet metal following the course of the chamfer while being pressed against the rim, thereby plastically deforming the rim locally into the chamfer while advancing along the chamfer in rolling contact. | 12-10-2009 |
20130205856 | APPARATUS AND METHOD FOR FORMING PRODUCT HAVING ASYMMETRIC CROSS-SECTION USING RING ROLLING PROCESS - Disclosed herein is an apparatus and method for forming a product having an asymmetric cross-section using a ring rolling process. The method of forming a product having an asymmetric cross-section uses a ring rolling process that uses a ring rolling apparatus, the ring rolling apparatus comprising: a main roll pressing a circumferential outer surface of a blank, a pressure roll pressing a circumferential inner surface of the blank, and a pair of axial rolls pressing upper and lower surfaces of the blank, wherein a protrusion provided on the pressure roll comes into contact with a depressed portion formed on the circumferential inner surface of the blank, and as a width of the blank varies, the pressure roll moves in a vertical direction. | 08-15-2013 |
20140102158 | METHOD OF TUBE-NECKING SPINNING AND APPARATUS THEREFOR - A two-step method and apparatus therefor provide cost-effective processing of tube-necking spinning for Superconducting Radio Frequency (SRF) cavities. A metal tube as a work piece may be rotated round its longitudinal axis; the target shape is obtained gradually in two steps by driving specially profiled rollers along roller paths moving in radial and axial directions. Alternatively, the rollers may rotate around a stationary work piece. To spin one cell, in the first step, a primary forming roller moves along a roller path to form a partial necking shape; then, in a second step, a secondary forming roller moves along a roller path to continue necking processing; and finally, the full cell is formed. To spin multi-cells, this two-step method is repeated for each cell. No additional equipment is required as rollers are mounted the same as in conventional spinning The cost is reduced by applying a rapid feeding rate, greatly shortening the length of the roller path, accurately controlling the spun profile and eliminating a complicated mandrel. | 04-17-2014 |
20150040632 | Method and Device for Forming Grooves in Pipe Elements - A method of forming circumferential grooves in pipe elements using opposed rollers to cold work the pipe elements determines the diameter of the groove while the pipe element is rotated between the rollers. A device for executing the method uses the instantaneous determinations of the groove diameter in a feed-back loop to control the operation of the device and halt groove formation when the groove diameter is within a specified tolerance. | 02-12-2015 |
072085000 | And means causing tool to traverse surface of cooperating rotatable member | 4 |
20110185782 | FLOW FORM TOOL MANDREL - An apparatus includes a mandrel having a first end and a second end, the mandrel including a cavity formed therein, a pilot disposed in the cavity formed in the mandrel, a portion of the pilot extending outwardly from the first end of the mandrel, and an insert disposed in a channel formed in the mandrel and through an exterior surface of the mandrel, wherein a portion of the pilot abuts the insert and radial outward movement of the insert is caused by an axial movement of the pilot. | 08-04-2011 |
20120090372 | METHOD AND DEVICE FOR STRETCH-FLOW FORMING - A method for stretch-flow forming, in which a tubular workpiece is arranged around a spinning mandrel, set into rotation and formed by advancing at least one forming roller. A wall thickness of the tubular workpiece is reduced and the tubular workpiece is lengthened, as spinning mandrel use is made of a universal spinning mandrel with different external diameters in the axial direction for producing cylindrical and/or conical and/or cambered hollow parts of different design. during forming the forming roller and the spinning mandrel are moved relatively in the axial direction with respect to the workpiece, and, for the purpose of designing varying diameters and/or wall thicknesses of the workpiece, the forming roller is moved relatively in the axial direction with respect to the spinning mandrel. | 04-19-2012 |
20130152652 | SPIN FORMING PROCESS AND APPARATUS FOR MANUFACTURING ARTICLES BY SPIN FORMING - A spin forming process and apparatus is disclosed. A workpiece (e.g. sheet metal) is rotated with respect to a forming roller which bears against one of the outer and inner surfaces of the workpiece to deform the workpiece towards a required shape. First and second support rollers bears against the opposite surface of the workpiece. Computer control of the positions of the forming roller and the first and second support rollers allow non-axisymmetric shapes to be manufactured by spin-forming. | 06-20-2013 |
20140366601 | FLOW FORMED DRUM WITH A RETENTION RING AND A SUBSTANTIALLY BURR FREE TOOTH PROFILE - A flow formed part includes a first end, a second end, and a side wall extending therebetween. A reinforcing member is disposed around the second end. The side wall has a profile formed along an inner surface of the side wall. The profile is adapted to be substantially burr free after windows are formed in the sidewall. A method of making a flow formed part includes the steps of disposing a preform on a tailstock, providing a plurality of rollers adjacent the tailstock, providing a mandrel having an outer surface including a plurality of alternating channels and protuberances, and causing the rollers to press the preform against the outer surface of the mandrel. | 12-18-2014 |