# US 2013/0239378 A1 · Rotor manufacturing apparatus, rotor manufacturing method, and permanent-magnet positioning method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0239378 A1 - Document ID: US20130239378A1 - Status: Published application - Kind: A1 - Application number: 13/775,252 - Filed: 2013-02-25 - Published: 2013-09-19 - Earliest claimed: 2012-03-19 - Assignees: Kabushiki Kaisha Yaskawa Denki - Applicants: Kabushiki Kaisha Yaskawa Denki - Inventors: Yasufumi KUROIWA; Kanta YAMAGUCHI - Web page: https://patentgrep.com/patent/US20130239378A1 ## CPC - B23P 15/04: turbine or like blades from several pieces - H02K 1/278: Surface mounted magnets; Inset magnets - H02K 15/03: having permanent magnets - Y10T 29/37: Impeller making apparatus - Y10T 29/49337: Composite blade - B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q) - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A rotor manufacturing apparatus includes a pusher and multiple blades. The pusher presses multiple magnets that are temporarily attached to a rotor core and arranged side by side in a circumferential direction of the rotor core from an outer side in a radial direction of the rotor core. The multiple blades are individually inserted into gaps between the magnets pressed by the pusher. ## Claims ### Claim 1 A rotor manufacturing apparatus comprising: a pressing portion that presses a plurality of permanent magnets that are temporarily attached to a rotor core and arranged side by side in a circumferential direction of the rotor core from an outer side in a radial direction of the rotor core; and a plurality of blade portions individually inserted into gaps between the permanent magnets pressed by the pressing portion. ### Claim 2 (depends on 1) The rotor manufacturing apparatus according to claim 1, wherein, while a first one of the blade portions is inserted into a corresponding one of the gaps between the permanent magnets, the first one of the blade portions moves a corresponding one of the permanent magnets contacting the first one of the blade portions in the circumferential direction and thus the corresponding one of the permanent magnets is pressed against a second one of the blade portions that is adjacent to the first one of the blade portions. ### Claim 3 (depends on 2) The rotor manufacturing apparatus according to claim 2, wherein each of the blade portions has, at a tip portion of the blade portion, a tapered surface that obliquely intersects with the radial direction, and wherein each of the blade portions moves a corresponding one of the permanent magnets contacting the tapered surface along the tapered surface. ### Claim 4 (depends on 2) The rotor manufacturing apparatus according to claim 2, wherein each of the blade portions has, at a tip portion of the blade portion, an end face that extends substantially parallel to the radial direction and that intersects with the circumferential direction, and wherein a corresponding one of the permanent magnets is pressed against the end face and the end face serves as a standard surface in the circumferential direction. ### Claim 5 (depends on 1) The rotor manufacturing apparatus according to claim 1, wherein after the blade portions are inserted into the gaps between the permanent magnets, the pressing portion further presses the permanent magnets with a second pressing force, which is larger than a first pressing force that is a pressing force used to press the permanent magnets before the blade portions are inserted. ### Claim 6 (depends on 5) The rotor manufacturing apparatus according to claim 5, wherein the rotor core has a recess extending in the circumferential direction on a circumferential surface of the rotor core, and wherein the second pressing force is a force preadjusted to such a magnitude that a film thickness of an adhesive applied to the recess becomes uniform when the adhesive is pressed by the permanent magnets. ### Claim 7 (depends on 5) The rotor manufacturing apparatus according to claim 5, wherein the blade portions are withdrawn while the pressing portion keeps pressing the permanent magnets. ### Claim 8 A rotor manufacturing method comprising: a first pressing step of pressing a plurality of permanent magnets temporarily attached to a rotor core and arranged side by side in a circumferential direction of the rotor core from an outer side in a radial direction of the rotor core; a positioning step of positioning the permanent magnets in the circumferential direction by individually inserting a plurality of blade portions into gaps between the permanent magnets that have been pressed since the pressing step so that each of the permanent magnets contacting a first one of the blade portions is moved in the circumferential direction and thus pressed against a second one of the blade portions that is adjacent to the first one of the blade portions; a second pressing step of further pressing the permanent magnets that have been positioned in the positioning step from an outer side in the radial direction with a pressing force that is larger than a pressing force used in the first pressing step; and a withdrawing step of withdrawing the blade portions while the permanent magnets remain in a state of being pressed which has existed since the second pressing step. ### Claim 9 A permanent-magnet positioning method comprising: a pressing step of pressing a plurality of permanent magnets temporarily attached to a rotor core and arranged side by side in a circumferential direction of the rotor core from an outer side in a radial direction of the rotor core; and a positioning step of positioning the permanent magnets in the circumferential direction by individually inserting a plurality of blade portions into gaps between the permanent magnets that have been pressed since the pressing step so that each of the permanent magnets contacting a first one of the blade portions is moved in the circumferential direction and thus pressed against a second one of the blade portions that is adjacent to the first one of the blade portions.