Abstract:
Bei einem Stator (60) für einen Elektromotor, der ein inneres Statorteil (10) enthält, das in radialer Richtung angeordnete Pole (11) zur Wicklungsaufnahme enthält, die auf der Innenseite (12) über Verbindungsstege (13a, 13b) miteinander verbunden sínd und die auf der Aussenseite (14) Wicklungsbegrenzer (15) aufweisen, zwischen denen Einwickelöffnungen (16a, 16b) vorhanden sind, ist auf der Aussenseite (14) der Pole (11) wenigstens eine erste Aussparung (17) vorgesehen, in die eine Fixierungseinrichtung (30) während eines Bewicklungsvorgangs der Pole (11) eingreift. Ein weiterer erfindungsgemässer Stator (60) für einen Elektromotor, der ein inneres Statorteil (10) enthält, das in radialer Richtung angeordnete Pole (11) zur Wicklungsaufnahme enthält, die auf der Innenseite (12) über Verbindungsstege (13a, 13b) miteinander verbunden sind und die auf der Aussenseite (14) Wicklungsbegrenzer (15) aufweisen, zwischen denen Einwickelöffnungen (16a, 16b) vorhanden sind, weist ein Verhältnis des jeweils einem Pol (11) zugeordneten hälftigen Wickelraums (F W ) zur Polfläche (F P ) grösser als 1 auf.
Abstract:
An apparatus (10) for winding stator teeth (100a, 100b) includes at least one fly winder (12) for winding wire around stator teeth. At least one stator teeth holder (62) includes stator tooth retainers (72) at spaced locations for retaining stator teeth thereon. The at least one stator tooth holder (62) and fly winder (12) are moveable relative to one another to present each stator tooth to the at least one fly winder for winding a wire coil thereon. The stator tooth retainers are relatively positioned on the at least one stator teeth holder to control a span of wire (110) extending between the stator teeth (100a, 100b) after the stator teeth have been presented to the at least one fly winder and wound.
Abstract:
Bei einem Verfahren zum Bewickeln eines mehrpoligen, mit nach innen gerichteten Polen ausgestatteten Stators einer elektrischen Maschine werden Drahtspulen (28) um die Pole gewickelt und die bewickelten Pole werden nachfolgend in einen Rückschlussring (14) eingepresst. Die Pole werden vor dem Wickelvorgang in ein Hilfswerkzeug (40) von der Art eines Rückschlussrings (14) eingesetzt, wobei das Hilfswerkzeug (40) einen gegenüber dem Innendurchmesser (d R ) des Rückschlussrings (14) grösseren Innendurchmesser (d H ) aufweist, die im Hilfswerkzeug (40) gehaltenen Pole bewickelt werden, die Pole nach dem Wickelvorgang mit einer Hilfseinrichtung aus dem Hilfswerkzeug (40) genommen, auf die der Anordnung im Rückschlussring (14) entsprechende Position radial nach innen verschoben und nachfolgend in den Rückschlussring (14) eingesetzt werden.
Abstract:
A plurality of stator arc segments (20) form a toroidal core (17) for a stator assembly (40) used to make a motor (100). In a preferred embodiment, a plurality of magnetic fields is created when electrical current is conducted through wire (15) wound around poles (21) on the toroidal core (17). A monolithic body (42) of phase change material substantially encapsulates the conductors and holds the stator arc segments (20) in contact with each other in the toroidal core (17). Hard disc drives using the motor (100), and methods of constructing the motor (100) and hard disc drives are also disclosed.
Abstract:
For use with a robot having an end effector for connecting stator coil lead wires to trough-shaped terminals, tamper members are slidably mounted on a terminal crimping and lead wire cutting member. Air actuators drive the tamper members toward the terminals when the end effector is manipulated to place the lead wires into the terminal troughs.
Abstract:
Electrical machines with a radial air gap field, especially low-power EC dead-end feeders, having the advantage of individually wound poles. The trapezoidal cross section of the slot and small slot openings in the direction of the air gap make it difficult to produce a compact winding. According to the invention the body of the electric machine which forms the individual poles is made of soft magnetic segments. The segments are preferably made of axially stacked metal sheets having indentations on the edges forming the wall of the slot. This enables the conductor wire to be guided in a precise manner during the winding of individual poles. At the air gap the pole shoes cover almost all of the perimeter and at the opposite end they form adjacent pole segments, preferably recesses in which retention pins, once mounted, are inserted axially and ensure radial fastening. In multiphase machines wound and unwound T-segments alternate in the direction of the width of the slot. X-segments have a pole surface which is fractionally increased according to the number of phases. The invention enables highly efficient electric drive units to be produced at low cost.
Abstract:
A tamping assembly is provided at a stator winding station that includes a tamping member and an air actuator which drives the tamping member toward and away from a temporary wire clamp. The temporary wire clamp has a movable jaw which is forced open to receive a stator coil lead wire by engagement of the tamping member therewith. Extended and retracted positions of the tamping member are determined by proximity detectors that detect the corresponding extended and retracted positions of a guide rod connected to and movable with the tamping member. Plural tamping assemblies are provided, one for each temporaty wire clamp. The tamping assemblies are used in conjunction with lead pull assemblies which locate segments of stator coil lead wires in positions to be inserted into the temporary clamps when forced open by the tamping members.
Abstract:
A unitary end bell (66) includes a body (90) and a bridging section (92) and is assembled with a laminated stator stack (74) in the formation of a stator subassembly (150). End bell (66) is formed with base surfaces (118) at one end thereof which directly engage adjacent portions of lamination stack (74) and insulate these portions from coil windings (152). End bell (66) also has wire-retaining shrouds (110) which support and confine the coil windings (152) in their wound configuration. Bridging section (92), which straddles the other end of body (90), is formed with brush box channels (120) and a nest (138) for supporting an armature bearing (218). Laminations (76) of the stack (74) are held together and assembled with the end bell (66) by the coil windings (152) themselves, which are wound after the loose laminations (76) and the end bell (66) are preassembled together. A shroud support (168) and a pallet (212) may be employed to aid such assembly.