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1.发明公开
公开(公告)号：EP3593921A1
公开(公告)日：2020-01-15
申请号：EP19757158.1
申请日：2019-02-25
申请人： NSK Ltd.
摘要： Provided are an oil pan (20) which has an annular recess portion (52) facing an outer circumferential edge of a spherical concave portion (36) throughout a whole circumference; and a cover (21) which is constituted in a tubular shape, of which one axial end portion is rotatably supported by a part adjacent to a radially inner side of the annular recess portion (52), and of which an axially opposite end portion is rotatably supported by a part of a shaft-equipped spherical seat (18) on the one axial end side.
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公开(公告)号：EP4415481A1
公开(公告)日：2024-08-14
申请号：EP23869288.3
申请日：2023-09-28
申请人： NSK Ltd.
发明人： KAWAKAMI Kinya , IZUMI Shinji , KIKUCHI Tokumasa , KOYAMA Hiroshi
摘要： An induction heating method includes a step of supplying a ring-shaped member (Mr) to a predetermined section serving as a heating target section using an induction coil, and a step of moving the ring-shaped member (Mr) along a reference axis so as to pass through the predetermined section. The moving step includes controlling contact between the ring-shaped member (Mr) and a different member by a contact control portion (54).
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公开(公告)号：EP3450908A1
公开(公告)日：2019-03-06
申请号：EP17827627.5
申请日：2017-07-11
申请人： NSK Ltd.
摘要： This rotary forge device testing device is provided with: a head capable of being driven in rotation about a central axis thereof; a processing roller which is supported on the head in such a way as to be capable of rotating about the central axis of the processing roller, in a state in which the central axis of the processing roller is inclined relative to the central axis of the head; a testing tool which is supported on the head without the processing roller being supported thereon, when the rotary forge device is being tested, under substantially the same conditions as the processing roller, and which has the function of being capable of discharging a laser light beam along a central axis line of said testing tool; and a laser irradiation surface which is installed, when the rotary forge device is being tested, in such a way that the position thereof relative to the head, in relation to the axial direction of the head, is variable, and in such a way as to be capable of being irradiated by the laser light beam.
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公开(公告)号：EP3533529A1
公开(公告)日：2019-09-04
申请号：EP18880051.0
申请日：2018-10-24
申请人： NSK Ltd.
摘要： In a preparation step, a frame (10), a concave spherical seat (15), a convex spherical seat (13), a rotation body (16), a rotating shaft (12), and a work holder (17) are assembled, a laser head (33) is attached to the convex spherical seat (13), and a light receiving unit (38) is attached to the work holder (17). In a rotation body centering step, an irradiation position of a laser beam (LB) with respect to a laser irradiation surface (41) is changed by rotating the rotation body (16) while allowing the laser irradiation surface (41) to be irradiated with the laser beam (LB) emitted from the laser head (33) and a trajectory of the irradiation position is checked.
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