Abstract: The aim of the invention is to create a combined linear-rotary drive that has a compact, simple, and inexpensive design. Said aim is achieved by a combined drive comprising a linear driving device (3) and a rotary driving device (11), at least one of the two driving devices being provided with a hybrid reluctance motor. It is particularly advantageous to embody both driving devices as hybrid reluctance motors such that the rotor (4) can be produced at a low cost without permanent magnets in addition to ensuring that the drive has a very compact design.

Abstract: The invention relates to a permanently excited synchronous machine (1) comprising a stator (2) provided with slots (5) and a rotor (3) provided with permanent magnets (9) which form a magnetic pole (10). The machine also comprises first suppression means in the form of a pole covering (x) which is smaller than one in relation to a pole distribution (tp) of the permanent magnets (9), second suppression means in the form of a first staggering of the permanent magnets of a pole or a first inclination of the permanent magnets or a first inclination (?Schi) of the slots (5), and third suppression means in the form of a second staggering (?st2) of the permanent magnets (9) of a pole (10) or a second inclination (?Sch2) of the permanent magnets (9) or a second inclination of the slots.

Abstract: The aim of the invention is to provide a linear rotation drive wherein the oscillating torques are reduced to a minimum and whose rotation drive is devoid of axial forces. For this purpose, a magnet of the linear rotation drive is provided with sloped sections or a plurality of magnet sections is configured to give at least two sloped magnet arrangements which are symmetric to a line extending in the circumferential direction of the linear rotation drive. Oscillating torques can also be avoided by distributing the magnets across the circumference of the rotor or stator in an uneven manner. Favorable results can be obtained when the least common multiple of the number of grooves and the number of poles is as high as possible.

Abstract: An electric machine, in particular a motor, includes a winding support assembly and a measuring system, preferably an infrared measuring system, The measuring system has at least one sensor and an evaluation unit, whereby the measuring system is integrated in the winding support assembly. The infrared sensor, which operates without making contact with the winding support assembly, provides almost instantaneously a measurement value that is proportional to the actual temperature of the winding system, thereby significantly improving motor protection. The sensor can be embedded and sealed in the winding support assembly.

Abstract: The drive device (1) is intended for a machine for the plasticization and injection of synthetic material. It comprises a main drive (2) drivable in a first and a second direction of rotation and having a hollow shaft (6) rotatable about an axis of rotation (4). An axially bipartite inner reception region (7) having a first part region (8) and a second part region (9) is formed by the hollow shaft (6). Rotation transmission means (10, 14), arranged at least partially in the first part region (8), are provided for the transmission of a rotational movement of the hollow shaft (6) solely in a first direction of rotation to an extruder worm (16) rotatable about the axis of rotation (4).

Abstract: The aim of the invention is to provide a linear/rotation drive with an improved transmitter device for detecting the linear and rotational movements. For this purpose, the transmitter device (12, 14, 16, 17) for detecting the linear movement and/or rotational movement of the secondary part (4) of the linear drive (2) configured as an external rotor is at least partially arranged inside the primary part (6) of the linear drive (2). In this manner, the transmitter device (12, 14, 16, 17) is located in a magnetically shielded area. In order to avoid eccentricities in the transmitted device (12, 14, 16, 17), a journal (10) of the secondary part (4) is mounted on a bearing (11) in the primary part (6).

Abstract: The invention relates to a permanently excited synchronous machine and a method for the suppression of harmonics. The permanently excited synchronous machine (51) comprises a stator (53) and a rotor (55). Preferably, the stator (53) comprises a three-phase winding and the rotor (55) comprises permanent magnets (57). The stator (53) has thirty-nine slots (1-39) and the rotor (55) has eight magnetic poles (79). The slots of the stator (53) are wound in such a way that a first harmonic can be suppressed by means of a winding scheme and a second harmonic can be suppressed by means of magnet geometry.

Abstract: The invention relates to a synchronous machine provided with a stator and rotor, wherein the stator comprises stator teeth (1) provided with respective tooth tips in the bore hole thereof and tooth coils guided around the stator teeth (1), the rotor core discs (2) and a shaft are arranged and permanent magnet poles are formed on the external side of the rotor by means of permanent magnets (4), a pole gap (3) is provided in the rotation direction of the rotor between two magnetic poles, respectively, and is filled with a magnetically conductive material, the stator teeth (1) angle is equal to or less than 85% of a pole pitch angle or the stator teeth (1) angle is equal to or greater than 115% of the pole pitch angle.

Abstract: Disclosed is an electric machine (1) comprising a stator (2) that encompasses a winding system (10) with three winding branches, and a certain number of effective pole pairs. Each winding branch is provided with at least one coil group, each of which contains an even number of serially connected individual coils (11) that generate an individual magnetic field, respectively. Two respective individual coils (11) of a coil group are offset relative to each other in a circumferential direction of the stator (2) in such a way that the associated individual magnetic fields are provided with an offset electrical angle relative to one another at the sixth harmonic of the number of effective pole pairs, said offset electrical angle being equal to an odd multiple of 180°.

Abstract: A reluctance motor comprises a stator (2) and a rotor (4). The stator (4) consists of a ferromagnetic but not permanent-magnetic material and has stator teeth (6) that are radially directed towards the rotor (4). Two tangentially adjacent stator teeth (6) each define between them one respective stator slot (7) in which a part of a stator winding (8) is arranged. Permanent magnets (10) are arranged on the stator (2) and emit permanent magnetic fields. The permanent magnets (10) are arranged tangentially in the area of the stator slots (7) and their magnetic fields are radially oriented in the same direction. The permanent magnets are associated with flux guiding elements (12) which deflect the permanent magnetic fields emitted by the permanent magnets (10) in such a manner to the stator teeth (6) that the permanent magnetic fields, based on the tangential position, are oriented in the opposite direction relative to each other in the area of the stator teeth (6) and in the area of the stator slots (7).

Abstract: An electric machine includes a stator having slots of substantially rectangular cross section. The slots are subdivided into pairs of slots, with each pair of slots configured with parallel flanks, wherein teeth are formed between the slots and have alternating rectangular and triangular cross sections. Positioned on the teeth of rectangular cross section are tooth coils.

Abstract: According to the invention, an improved copper filling in the slots (4) of a permanently-stimulated synchronous motor (2) may be achieved, whereby such a motor is disclosed, comprising a stator (1), with parallel-edged slots (4), provided with a winding system of flat wires (5), whereby the flat wires (5) each enclose a tooth (3) and are embodied as a tooth coil (6). The flat wires (5) are wound edgewise such that the narrower side of the flat wire (5) faces the tooth (3) and each tooth coil (6) comprises at least two layers of flat wires (5).

Abstract: A drive system includes a rotary drive unit for rotating a shaft and a linear drive unit for moving the shaft in a linear direction. To improve efficiency and shelf life, an energy storage is mechanically connected to the shaft for biasing the shaft to seek a linear movement in opposition to the linear direction. The energy storage absorbs the kinetic energy of the shaft and releases it again subsequently.

Abstract: A drive unit for operating a plastics injection machine includes a rotatably supported bushing intended for accommodation of an extruder screw and a rotor which includes a hollow shaft and is defined by an inner diameter sized to allow passage of the bushing and accommodated extruder screw through the rotor. The rotor is hereby detachably connected with the receiving member in fixed rotative engagement.

Abstract: A drive apparatus unit for components of a plastics processing machine includes a motor unit which is provided with a rotor having a hollow shaft, and a thrust bearing assembly for mounting a driveshaft of the plastics processing machine. The thrust bearing assembly is fully or partly disposed within the hollow shaft. By arranging the thrust bearing assembly within the hollow shaft, the size of the drive apparatus is reduced to the size of the motor unit.

Abstract: A drive apparatus unit for components of a plastics processing machine includes a motor unit which is provided with a rotor having a hollow shaft, and a thrust bearing assembly for mounting a driveshaft of the plastics processing machine. The thrust bearing assembly is fully or partly disposed within the hollow shaft. By arranging the thrust bearing assembly within the hollow shaft, the size of the drive apparatus is reduced to the size of the motor unit.

Abstract: An electric machine includes a stator having slots of substantially rectangular cross section. The slots are subdivided into pairs of slots, with each pair of slots configured with parallel flanks, wherein teeth are formed between the slots and have alternating rectangular and triangular cross sections. Positioned on the teeth of rectangular cross section are tooth coils.

Abstract: An electric machine, in particular a motor, includes a winding support assembly and a measuring system, preferably an infrared measuring system, The measuring system has at least one sensor and an evaluation unit, whereby the measuring system is integrated in the winding support assembly. The infrared sensor, which operates without making contact with the winding support assembly, provides almost instantaneously a measurement value that is proportional to the actual temperature of the winding system, thereby significantly improving motor protection. The sensor can be embedded and sealed in the winding support assembly.

Abstract: A pair of welding tongs includes two moveable tong arms, with each tong arm including a first arm element with an electrode, a second arm element, and a connecting element disposed between the first and second arm elements, whereby the connecting elements of the tong arms can rotate about a common fixed reference point. An articulated lever is connected to the second arm element. The pair of welding tongs further includes a mechanical coupling to link the articulated levers of the tong arms, and a drive unit for driving the mechanical coupling. The motion of the mechanical coupling is transmitted to each tong arm of the welding tongs.

Abstract: A drive system includes a rotary drive unit for rotating a shaft and a linear drive unit for moving the shaft in a linear direction. To improve efficiency and shelf life, an energy storage is mechanically connected to the shaft for biasing the shaft to seek a linear movement in opposition to the linear direction. The energy storage absorbs the kinetic energy of the shaft and releases it again subsequently.