公开(公告)号：WO2016185089A1

公开(公告)日：2016-11-24

申请号：PCT/FI2016/050325

申请日：2016-05-18

Applicant: LAPPEENRANNAN TEKNILLINEN YLIOPISTO

Inventor： HEIKKINEN, Janne ,  SOPANEN, Jussi ,  HURSKAINEN, Vesa-Ville ,  GHALAMCHI, Behnam

IPC: B23B23/04 ,  B23Q11/04 ,  B23B25/00 ,  B23Q17/09 ,  F16C25/08

CPC classification number: B23B23/04 ,  B23B2250/16 ,  B23B2260/008 ,  B23B2260/0087 ,  B23Q11/04 ,  B23Q17/09 ,  F16C25/08 ,  F16C32/0611 ,  F16C2233/00

Abstract: A live centre for a tailstock (100) of a lathe, a lathe and a method of operating the same, in which the live centre has a body (110), a rotating part(120); and a radial bearing (130) configured to rotatably support the rotating part to the body. The radial bearing is stiffness adjustable in the radial direction for control of vibration characteristics of the lathe during machining by adjusting axial compression force that effects over the live centre. The vibration characteristics can be estimated in advance by simulation.

Abstract translation: 一种用于车床尾座（100）的活动中心，车床及其操作方法，其中活体中心具有主体（110），旋转部分（120）; 以及径向轴承（130），其构造成将所述旋转部分可旋转地支撑在所述主体上。 径向轴承是在径向方向可调节的刚度，用于通过调节影响活动中心的轴向压缩力来控制车床在加工过程中的振动特性。 振动特性可以通过模拟预先估计。

公开(公告)号：WO2016151183A1

公开(公告)日：2016-09-29

申请号：PCT/FI2016/050052

申请日：2016-01-28

Applicant: LAPPEENRANNAN TEKNILLINEN YLIOPISTO

Inventor： SOPANEN, Jussi

IPC: F16C39/06 ,  F16C19/52 ,  F16C19/54 ,  F16C27/08 ,  F16C32/04

CPC classification number: F16C39/06 ,  F16C19/522 ,  F16C19/527 ,  F16C19/546 ,  F16C25/086 ,  F16C27/08 ,  F16C32/0408 ,  F16C32/0476

Abstract: A controllable bearing system comprises rolling bearings (101, 102) for rotatably supporting a rotatable element (109) and an axial control device (103) for directing, to the rotatable element, controllable axial force for changing the axial loads of the rolling bearings so as to control the stiffness of each of the rolling bearings. The first critical speed of the rotatable element is at least partly determined by the stiffness, and thus the first critical speed can be controlled by controlling the axial force directed to the rotatable element. A machine comprising the controllable bearing system can be started so that the axial load is decreased when the rotational speed achieves a limit value so as to shift the first critical speed from a rotational speed region above the limit value to another region below the limit value.Thus, the first critical speed can be passed during the starting.

Abstract translation: 可控轴承系统包括用于可旋转地支撑可旋转元件（109）和轴向控制装置（103）的滚动轴承（101,102），用于将可控制的轴向力引导到可旋转元件，以改变滚动轴承的轴向载荷， 以控制每个滚动轴承的刚度。 可旋转元件的第一临界速度至少部分地由刚度决定，因此可以通过控制指向可旋转元件的轴向力来控制第一临界速度。 包括可控轴承系统的机器可以启动，使得当转速达到极限值时轴向载荷减小，从而将第一临界速度从超过限制值的转速区域移动到低于极限值的另一区域。 因此，第一临界速度可以在启动期间通过。

公开(公告)号：WO2019002663A1

公开(公告)日：2019-01-03

申请号：PCT/FI2018/050411

申请日：2018-05-31

Applicant: LAPPEENRANNAN TEKNILLINEN YLIOPISTO

Inventor： SOPANEN, Jussi ,  PYRHÖNEN, Olli

IPC: H02K7/09

Abstract: An electric machine comprises a stator (101) and a rotor (104). The stator comprises a frame structure (102) and an electromagnetically active part (103) inside the frame structure. The rotor comprises a shaft (105) and an electromagnetically active part (106) for producing torque in co-operation with the electromagnetically active part of the stator. The electric machine comprises bearings (107-109) inside the frame structure and arranged to support the rotor rotatably with respect to the stator. A magnetic bearing module (110) for supporting the shaft is attached to an outer surface of the frame structure so that the frame structure and the magnetic bearing module are axially successive.The magnetic bearing module is a replaceable component which is non-destructively detachable from the frame structure. Thus, the electric machine can be adapted to different mechanical loads by selecting a suitable magnetic bearing module.

公开(公告)号：WO2018154176A1

公开(公告)日：2018-08-30

申请号：PCT/FI2018/050096

申请日：2018-02-13

Applicant: LAPPEENRANNAN TEKNILLINEN YLIOPISTO

Inventor： PYRHÖNEN, Juha ,  SOPANEN, Jussi

IPC: H02K1/32 ,  H02K17/16

Abstract: A rotor of an induction machine comprises a ferromagnetic core structure (103) and a cage winding. The cage winding comprises rotor bars (104) and end-rings. The rotor bars are located in slots of the ferromagnetic core structure. The end-rings connect the ends of the rotor bars to each other at the ends of the ferromagnetic core structure. The radial height of the slots of the ferromagnetic core structure is greater than the radial height of the rotor bars so that the bottom portions (108) of the slots are free from the rotor bars. Therefore, the bottom portions of the slots constitute cooling ducts for conducting cooling fluid through the rotor. As the rotor bars constitute one wall of each cooling duct, the cooling fluid has a direct contact with the rotor bars.

公开(公告)号：WO2018037159A1

公开(公告)日：2018-03-01

申请号：PCT/FI2017/050586

申请日：2017-08-22

Applicant: LAPPEENRANNAN TEKNILLINEN YLIOPISTO

Inventor： PYRHÖNEN, Olli ,  JASTRZEBSKI, Rafal ,  SALMINEN, Antti ,  SOPANEN, Jussi

IPC: H02K15/00 ,  H02K15/02 ,  H02K1/12 ,  H02K1/22 ,  B22F3/00 ,  H01F3/00 ,  B29C64/00 ,  F16C32/00 ,  B33Y80/00 ,  B33Y10/00

Abstract: A core element for a magnetic component comprises a plurality of ferromagnetic sections (216-219) for conducting a magnetic flux. Adjacent ones of the ferromagnetic sections are connected to each other with ferromagnetic isthmuses (221) keeping the adjacent ones of the ferromagnetic sections a distance apart from each other, and/or the gaps between the ferromagnetic sections are filled with electrically insulating solid material (223) and adjacent ones of the gaps are connected to each other via openings (224) through the ferromagnetic sections and filled with electrically insulating solid material (225). The ferromagnetic sections can constitute for example a stack of ferromagnetic sheets or a bundle of ferromagnetic filaments. The core element can be manufactured by three-dimensional printing and thus it is possible to make core elements which are not possible or at least not cost effective to be made by shaping ferromagnetic sheets which are originally planar.

Abstract translation: 用于磁性部件的核心元件包括用于传导磁通量的多个铁磁部分（216-219）。 相邻的铁磁部分通过铁磁峡部（221）彼此连接，使相邻的铁磁部分彼此保持一定距离，和/或铁磁部分之间的间隙用电绝缘固体材料（223 ）并且相邻的间隙经由穿过铁磁部分的开口（224）彼此连接并且填充有电绝缘固体材料（225）。 铁磁部分可以构成例如一叠铁磁片或一束铁磁丝。 核心元件可以通过三维印刷来制造，并且因此可以制造不可能或至少不具有成本效益的核心元件，通过对最初是平面的铁磁片进行成形而制成。

公开(公告)号：WO2016139389A1

公开(公告)日：2016-09-09

申请号：PCT/FI2016/050050

申请日：2016-01-28

Applicant: LAPPEENRANNAN TEKNILLINEN YLIOPISTO

Inventor： HEIKKINEN, Janne ,  SEMKEN, Robert Scott ,  PYRHÖNEN, Olli ,  SOPANEN, Jussi ,  SMIRNOV, Alexander

IPC: F16C32/04 ,  F16C39/02 ,  F16C19/54 ,  F16C27/04

CPC classification number: F16C32/0442 ,  F16C19/548 ,  F16C27/04 ,  F16C32/0489 ,  F16C39/02 ,  F16C2380/26

Abstract: Abstract of the disclosure: A controllable bearing system for supporting a rotatable element comprises a bearing (102), spring equipment (105), and at least one electromagnet (106). The bearing is mechanically supported to be movable with respect to the rotatable element in the axial direction of the bearing. The spring equipment generates spring force for axially pressing the bearing so as to make the bearing system to support the rotatable element. The electromagnet is suitable for generating magnetic force directed against the spring force and keeping the bearing system detached from the rotatable element. Electrical current of the electromagnet determines whether the bearing system supports the rotatable element or is detached from the rotatable element. Thus, the bearing system is suitable for an auxiliary bearing that needs to be detached from the rotatable element during a normal operation and to support the rotatable element when main bearings, such as magnetic bearings, are non-operating.

Abstract translation: 本公开的摘要：一种用于支撑可旋转元件的可控轴承系统，包括轴承（102），弹簧设备（105）和至少一个电磁体（106）。 轴承被机械地支撑成可在轴承的轴向方向上相对于可旋转元件移动。 弹簧设备产生用于轴向按压轴承的弹簧力，以使轴承系统支撑可旋转元件。 电磁铁适于产生针对弹簧力的磁力并保持轴承系统与可旋转元件分离。 电磁铁的电流确定轴承系统是支撑可旋转元件还是与可旋转元件分离。 因此，轴承系统适合于在正常操作期间需要从可旋转元件拆卸的辅助轴承，并且当主轴承（例如磁性轴承）不工作时支撑可旋转元件。

公开(公告)号：WO2016116660A1

公开(公告)日：2016-07-28

申请号：PCT/FI2015/050850

申请日：2015-12-03

Applicant: LAPPEENRANNAN TEKNILLINEN YLIOPISTO

Inventor： HEIKKINEN, Janne ,  SOPANEN, Jussi

IPC: F16C32/04

CPC classification number: F16C32/0476 ,  F16C32/0468 ,  F16C32/047

Abstract: A rotor assembly for an axial magnetic bearing comprises a shaft portion (101) and a disc (102) attached to the shaft portion. The disc comprises a conical surface (103) on a portion reaching radially from the aperture of the disc a distance away from the aperture. A fastening mechanism (104) comprises an aperture for the shaft portion so that the fastening mechanism comprises a conical surface (105) matching the conical surface of the disc. The fastening mechanism and the shaft portion are shaped to enable the fastening mechanism to be tightened axially against the conical surface of the disc so as to arrange the conical surface of the fastening mechanism to press the conical surface of the disc towards the center line of the shaft portion. Thus, the fastening mechanism acts against the centrifugal force and keeps the disc centric placed.

Abstract translation: 用于轴向磁性轴承的转子组件包括轴部（101）和附接到轴部的盘（102）。 该盘包括一个圆锥形表面（103），该圆锥形表面（103）在远离光圈的距离上从盘的孔径向径向延伸的部分。 紧固机构（104）包括用于轴部分的孔，使得紧固机构包括与盘的锥形表面匹配的锥形表面（105）。 紧固机构和轴部分成形为使得紧固机构能够轴向地紧固在盘的锥形表面上，以便将紧固机构的锥形表面设置成将盘的锥形表面朝向 轴部分。 因此，紧固机构抵抗离心力作用并使盘保持中心位置。