摘要:
An apparatus for assembling a stator core having a plurality of radially disposed and radially movably jigs for holding the segmented cores. Vertically movable cams are provided vertically downwards on an upper vertically movable plate. By lowering the movably plate, the jigs are pushed radially inwards, thereby causing the plurality of segmented cores circumferentially to approach each other. The projection of each segmented core is fit by press fitting into the groove of the adjoining segmented core in the circumferential direction, thereby connecting the segmented cores together.
摘要:
A method of making a rotor for an electric motor includes accommodating, in a forming mold, a plurality of annularly disposed rotor magnets, a frame made of steel plate and formed generally into a shape of a cup, the frame having an annular wall disposed outside the annularly disposed rotor magnets so as to be located at a side opposed to a stator with respect to the rotor magnets, the annular wall having a open end, and a ring member made of a magnet material and disposed along the annular wall of the frame at an inner or outer circumferential side of the annular wall, the rotor magnets being held by magnet holding means provided in the forming mold in execution of the accommodating step, and pouring a molten resin into the forming mold accommodating the rotor magnets, the frame and the ring member and hardening the resin.
摘要:
A storage tray for storing magnetized magnets for assembly in a disc drive. The tray includes a base having a support surface and a cover sized to cover the support surface. The base is formed of a material having magnetic properties for attracting magnetized magnets for removably supporting the magnets until assembled in a voice coil motor.
摘要:
An electric motor including a permanent-magnet rotor having embedded magnets held in place by several segments. The embedded magnets are secured by segments including non-circular openings near their centers. Several non-magnetic, non-conductive bars extend through the non-circular openings of the segments to secure the segments in relation to the shaft. The motor is capable of producing high torque while only requiring a minimum amount of space.
摘要:
A method for varying motor output using magnets of different fluxes includes manufacturing standardized parts, ascertaining desired motor output, selecting from a group of interchangeable magnets to provide the desired output, and assembling a motor with the selected magnets and standardized parts such that the desired output is provided. Additionally, a motor kit including a rotor configured to accommodate magnets of varying residual induction values and lengths, a stator configured to operate with the rotor, and a plurality of interchangeable magnets with different residual induction values and lengths.
摘要:
Methods and apparatus are disclosed for assembling an electric machine. The electric machine includes a plurality of stator segment assemblies that are mounted inside of a housing of an electric machine. The stator segment assemblies are positioned around an outer surface of an assembly fixture. The stator segment assemblies are held to the assembly fixture using a magnetic field that is generated by the assembly fixture. The housing is press fit or hot dropped over the stator segment assemblies. If the housing is hot dropped, the housing is heated to cause the housing to expand. The housing is positioned over the stator segment assemblies while the housing is hot. The housing cools and contracts around the stator segment assemblies to form an interference fit with the stator segment assemblies and then the stator and the housing are removed from the assembly fixture.
摘要:
A wound cover arrangement for an electric motor rotor, said rotor including a core (20), magnets (30) surrounding said core and a cover (10), which is wound around the core, in order to retain said magnets (30) on said core, said arrangement comprising a pair of mold end elements (40), each mounted to an end face portion of the rotor core (20) and to the adjacent end face of at least one of the parts defined by the cover (10) and magnets (30), and which has a peripheral edge portion (41) provided with at least one recess (43) extending towards the rotor axis, the distance between said rotor and the bottom of said recess (43) defining the smallest winding end radius of the cover.
摘要:
The invention relates to a permanent magnet-excited assembly of an electrical machine, as well as to a process for producing in particular a synchronous machine with a ferromagnetic body and permanent magnets arranged therein, for application as compact solutions for drives. According to the invention, punched single-component metal sheet disks or metal sheet strips (2) of the type known per se, with slots (3) and teeth (4) toward the back accommodate a arrangement of internal slots (5). The number and position of the internal slots (5) are adapted to the slots (3) for receiving the permanent magnets (7). A narrow removable bridge (9) is first arranged between the inner slots (5) and the slots (3). The pack of sheet metal elements is subsequently laminated and then solidified with non-ferromagnetic material (6). Following curing of the solidification, the slots (3) are milled down to the non-ferromagnetic material (6). Permanent magnets (7) are inserted in preferably semi-open slots (3) and solidified. Openings (8) are arranged in the interior of the laminated teeth (4) in the lower zone toward the base of the slot. Finally, the entire permanent magnet-excited assembly as defined by the invention is set by methods known in the field of electrical machine building.