# US 2018/0026503 A1 · Stator manufacturing method and apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0026503 A1 - Document ID: US20180026503A1 - Status: Published application - Kind: A1 - Application number: 15/656,157 - Filed: 2017-07-21 - Published: 2018-01-25 - Earliest claimed: 2016-07-25 - Assignees: Honda Motor Co., Ltd. - Applicants: Honda Motor Co., Ltd. - Inventors: Takashi Yoshida; Daiki Sakai - Web page: https://patentgrep.com/patent/US20180026503A1 ## CPC - H02K 15/0428: Processes or apparatus for simultaneously twisting two or more hairpins - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) ## Abstract A stator manufacturing apparatus is equipped with spindles as twisting and bending jigs, an inner guide having a first supply flow path and a suction flow path formed in the interior thereof, and an outer guide having a second supply flow path formed in the interior thereof. Further, the spindles have receiving members in which insertion recesses are formed. Through holes are formed in the receiving members, and the receiving members are formed with lateral holes therein which allow the interiors of the insertion recesses to communicate with each other. ## Claims ### Claim 1 A stator manufacturing method for obtaining a stator by twisting and bending coil segments in which first straight portions and second straight portions of the coil segments are inserted into slots formed along a circumferential direction of a stator core, comprising the steps of: inserting ends of the first straight portions or the second straight portions, which are exposed from the slots, into insertion recesses formed respectively in a plurality of twisting and bending jigs, and thereafter, twisting and bending the coil segments by rotating the twisting and bending jigs; and separating the ends of the first straight portions or the second straight portions away from the insertion recesses, and thereafter, simultaneously suctioning interiors of all of the insertion recesses. ### Claim 2 (depends on 1) The stator manufacturing method according to claim 1, wherein when the interiors of the insertion recesses are suctioned, a fluid medium is supplied to the insertion recesses from a direction that differs from a direction in which suctioning is performed. ### Claim 3 (depends on 1) The stator manufacturing method according to claim 1, wherein when the coil segments are twisted and bent, a fluid medium is supplied between adjacent ones of the twisting and bending jigs. ### Claim 4 (depends on 1) The stator manufacturing method according to claim 1, wherein when the coil segments are twisted and bent, the insertion recesses are covered by a shutter. ### Claim 5 A stator manufacturing apparatus configured to obtain a stator by twisting and bending coil segments in which first straight portions and second straight portions of the coil segments are inserted into slots formed along a circumferential direction of a stator core, comprising: a plurality of twisting and bending jigs configured to be rotated, and having receiving members in which insertion recesses are formed, ends of the first straight portions or the second straight portions, which are exposed from the slots, being inserted into the insertion recesses; and a suction unit configured to suction interiors of the Insertion recesses; wherein the receiving members of the twisting and bending jigs are arranged concentrically, and the suction unit is configured to simultaneously suction the interiors of all of the insertion recesses. ### Claim 6 (depends on 5) The stator manufacturing apparatus according to claim 5, further comprising an inner guide arranged inwardly of an innermost one of the twisting and bending jigs, and an outer guide arranged outwardly of an outermost one of the twisting and bending jigs; wherein a suction flow path is formed in either one of the inner guide and the outer guide; and communication holes are formed on respective side walls of the receiving members and configured to allow the insertion recesses to communicate with the suction flow path. ### Claim 7 (depends on 6) The stator manufacturing apparatus according to claim 6, wherein a supply flow path configured to communicate with the insertion recesses is formed in either one of the inner guide and the outer guide; and further comprising a fluid medium supply unit configured to supply a fluid medium to the insertion recesses via the supply flow path from a direction that differs from a direction in which suctioning is performed. ### Claim 8 (depends on 5) The stator manufacturing apparatus according to claim 5, wherein through holes through which a fluid medium is supplied between adjacent ones of the twisting and bending jigs are formed in the receiving members. ### Claim 9 (depends on 8) The stator manufacturing apparatus according to claim 8, wherein a raising and lowering unit configured to raise or lower the outer guide relatively with respect to the inner guide is provided on the outer guide or the inner guide. ### Claim 10 (depends on 5) The stator manufacturing apparatus according to claim 5, further comprising a shutter configured to cover the insertion recesses.