# US 2014/0190012 A1 · Method for retaining member by caulking > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0190012 A1 - Document ID: US20140190012A1 - Status: Published application - Kind: A1 - Application number: 14/153,423 - Filed: 2014-01-13 - Published: 2014-07-10 - Earliest claimed: 2009-03-13 - Assignees: Toyota Jidosha Kabushiki Kaisha - Applicants: Toyota Jidosha Kabushiki Kaisha - Inventors: Takeshi ISHIDA; Taro FURUKUBO - Web page: https://patentgrep.com/patent/US20140190012A1 ## CPC - B23P 15/003: {bearings (see also F16C33/00)} - B21D 39/04: of tubes with tubes; of tubes with rods {(crimped pipe joints as such F16L13/14)} - B21J 9/025: {with rolling or wobbling dies} - B21K 25/00: Uniting components to form integral members, e.g. turbine wheels and shafts, caulks with inserts, with or without shaping of the components (uniting by interference- or press-fitting B23P11/02, B21K19/02) - F01L 13/0015: {for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque} - F16C 35/067: Fixing them in a housing (with interposition of an element F16C35/07) - F16H 25/20: Screw mechanisms (with automatic reversal F16H25/12) - F01L 2820/032: Electric motors - F16C 19/184: {in O-arrangement} - F16C 2361/61: Toothed gear systems, e.g. support of pinion shafts - Y10T 29/49647: Plain bearing - Y10T 29/49908: Joining by deforming - Y10T 74/18568: Reciprocating or oscillating to or from alternating rotary - Y10T 74/18576: including screw and nut - Y10T 156/1002: with permanent bending or reshaping or surface deformation of self sustaining lamina - Y10T 428/13: Hollow or container type article [e.g., tube, vase, etc.] - Y10T 428/24479: including variation in thickness - B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q) - B21D: WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (working or processing of wire B21F) - B21J: FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES (rolling of metal B21B; making particular products by forging or pressing B21K; cladding or plating B23K; finishing surfaces by hammering B23P9/04; compacting surfaces by blasting with particulate material B24C1/10; general features of presses, presses for consolidating scrap B30B; furnaces in general F27) - B21K: MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS (making particular articles by working sheet metal without essentially removing material B21D; processing wire B21F; making pins, needles or nails B21G; making particular articles by rolling B21H; forging machines, pressing machines, hammering machines, in general B21J; making chains B21L; plating B23K) - F01L: CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES - F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS - F16H: GEARING - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract During a caulking process, a pressure is applied to a pressure receiving shoulder portion in the same direction as a direction of a clamping force generated by a caulking portion. The clamping force for holding an outer race can thereby be increased. Also, a pressure receiving surface of the pressure receiving shoulder portion is set higher than an end face. Thus, no pressure resulting from plastic deformation in a direction perpendicular to the direction of the clamping force of the caulking portion is generated. In addition, a groove is formed between the pressure receiving shoulder portion and an end serving as the caulking portion. ## Claims ### Claim 1 A method for retaining a member by caulking, comprising: bending an end of a workpiece along a corner portion of the member by a caulking surface of a caulking roller; applying a pressure to a pressure receiving shoulder portion, which is formed coaxially on the outside of a bent side of the end of the workpiece, in a same direction as a caulking pressure applied to the caulking surface so that a caulking process is performed to form a caulked portion, and the member is held along a base of the workpiece by a clamping force of the caulked portion; and setting a timing for starting a caulking end process to a timing when a caulking load applied to the caulking roller during the caulking process or a caulking torque for rolling the caulking roller undergoes a specific change indicating that the member begins to be strained. ### Claim 2 (depends on 1) The method according to claim 1, wherein the workpiece is a caulked retaining member that includes a groove between the bent side and the pressure receiving shoulder portion. ### Claim 3 (depends on 1) The method according to claim 1, wherein the caulking roller applies the pressure to the pressure receiving shoulder portion. ### Claim 4 (depends on 1) The method according to claim 1, wherein the specific change indicating that the member begins to be strained is an abrupt increase in the caulking load. ### Claim 5 (depends on 1) The method according to claim 1, wherein the specific change indicating that the member begins to be strained is an abrupt decrease in the caulking torque. ### Claim 6 (depends on 1) The method according to claim 1, wherein: the member is a bearing; and the workpiece is a housing that accommodates a rotary member rotatably supported by the bearing, or a bearing holder arranged in the housing. ### Claim 7 (depends on 6) The method according to claim 6, wherein: the bearing and the housing or the bearing holder are a bearing and a housing or a bearing holder in a rotation-translation conversion actuator respectively; and the housing is mounted to a driven object device, the rotation-translation conversion actuator also includes an output shaft, which moves in an axial direction of the workpiece through rotation of the rotary member, and protrudes outward from the housing to transmit a driving force from the output shaft to the driven object device. ### Claim 8 (depends on 7) The method according to claim 7, wherein: the rotary member is a nut of a planetary differential screw type rotation-translation converter; the output shaft is a sun shaft; a planetary shaft is arranged between the nut and the sun shaft; and the sun shaft and the planetary shaft mesh with the nut in a manner to perform rotation-translation conversion. ### Claim 9 (depends on 7) The method according to claim 7, wherein the driven object device is an internal combustion engine. ### Claim 10 (depends on 3) The method according to claim 3, wherein the caulking surface formed on the caulking roller and a pressing surface for applying the pressure to the pressure receiving shoulder portion are formed as a stepless cylindrical surface.