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1. 发明专利

JP2003158866A FORCER AND THREE-PHASE LINEAR MOTOR SYSTEM 审中-公开
公开(公告)号：JP2003158866A
公开(公告)日：2003-05-30
申请号：JP2002197886
申请日：2002-07-05
申请人： ANORAD CORP
发明人： SMIT PETER
IPC分类号： H02K41/02 , H02K41/03
摘要： PROBLEM TO BE SOLVED: To reduce a manufacturing cost of a linear motor system. SOLUTION: A three-phase linear motor system includes a forcer having three pole pairs, which are movable relative to a platen. The pole pairs are arranged to oppose associated teeth of the platen. The platen teeth are spaced apart from each other in a travel direction according to a prescribed tooth pitch. Each of the pole pairs includes a set of teeth that extends from magnetically coupled poles toward the platen. The set of teeth of one of the pole pairs is spaced from the sets of teeth for other two poles by distances functionally related to about 120 deg. and 240 deg. of the tooth pitch, respectively.

2. 发明专利

GB9707524D0 A linear motor with improved cooling 未知
公开(公告)号：GB9707524D0
公开(公告)日：1997-06-04
申请号：GB9707524
申请日：1997-04-14
申请人： ANORAD CORP
IPC分类号： H02K9/00 , H02K9/24 , H02K41/03
摘要： A linear motor has an epoxy core armature with dual cold plates attached to a top and a bottom of the epoxy core armature to effect cooling of the epoxy core armature. The use of dual cold plates with circulating cooling fluid reduces heat build up by providing paths of high thermal conductivity from any point in the epoxy core armature to the cold plates. Another embodiment of the invention employs ceramic heat sink plates laminated to sides of the epoxy core armature to increase the thermal conductivity and the resultant power dissipation capacity of the epoxy core armature without introducing magnetic or electrically conducting materials. Other embodiments of the invention utilize cold plates formed from extrusions of aluminum or ceramic materials. Still other embodiments have forced air cooling wherein a U-frame of the linear motor has longitudinal flexible seals and air is forced through the U-frame in which the epoxy core armature travel. Yet another embodiment has a U-frame with ducts formed therein through which air is force. Orifices connect the ducts to an interior of the U-frame through which the epoxy core armature travels.

3. 发明专利

CA2101407A1 HIGH-FORCE LINEAR MOTOR ASSEMBLY USING TANDEM AXES 未知
公开(公告)号：CA2101407A1
公开(公告)日：1994-02-01
申请号：CA2101407
申请日：1993-07-27
申请人： FORD MOTOR CANADA , ANORAD CORP
发明人： JERZYCKE CHARLES L , OGLETREE RICHARD , SOMMERHALTER FREDERICK A JR
IPC分类号： B23Q1/26 , B23Q1/01 , B23Q1/40 , B23Q1/56 , B23Q5/28 , F16C29/00 , H02K41/02
摘要： A linear motor assembly having enhanced mechanical stiffness, comprising: (a) at least one pair of rigidly interconnected tandem rails (14,15) defining a first axis of movement and spaced apart normal to such first axis; (b) at least one pair of frames (20,21) movable along said pair of rails (14,15), each frame presenting at least one pair of opposed parallel bearing surfaces; (c) at least one linear motor (26) effective to operate between each rail and frame; (d) bearings (60) supported between each rail and each bearing surface of each frame, said bearings being preloaded with an interference load while permitting bearing movement; and (e) support structure (27,28) between said frames defining axes of movement actuated by other linear motors.

4. 发明专利

DE69923614T2 未知
公开(公告)号：DE69923614T2
公开(公告)日：2005-12-29
申请号：DE69923614
申请日：1999-02-26
申请人： ANORAD CORP
发明人： CHITAYAT ANWAR
IPC分类号： G01D5/14 , G05B11/00 , H02K41/00 , H02K41/02 , H02K41/03
摘要： A linear motor having permanent magnets on a movable stage, also includes non-interleaved armature windings on a path. The magnets are arranged m along the span A of the movable stage. The armature windings are arranged with n windings occupying a distance equal to the span S. A switching device automatically switches power on to the armature windings entering the span, and switches power off to the windings leaving the span. The switching is done when the a magnet is aligned with the coil whose power is being switched on or off in order to minimizes switching noise. Switching is conveniently done using Hall effect devices controlling the switches, and a switching magnet, movable with the stage, having a length equal to the span. As the switching magnet comes within magnetic interaction distance of a Hall effect device, the Hall effect device closes its associated switch. As the switching magnet moves out of magnetic interaction distance with the Hall effect device, the Hall effect device closes its associated switch. The array of magnets includes one additional magnet outside each end of the span to maintain a sinusoidal magnetic field strength across the entire span.

5. 发明专利

DE69923614D1 未知
公开(公告)号：DE69923614D1
公开(公告)日：2005-03-17
申请号：DE69923614
申请日：1999-02-26
申请人： ANORAD CORP
发明人： CHITAYAT ANWAR
IPC分类号： G01D5/14 , G05B11/00 , H02K41/00 , H02K41/02 , H02K41/03
摘要： A linear motor having permanent magnets on a movable stage, also includes non-interleaved armature windings on a path. The magnets are arranged m along the span A of the movable stage. The armature windings are arranged with n windings occupying a distance equal to the span S. A switching device automatically switches power on to the armature windings entering the span, and switches power off to the windings leaving the span. The switching is done when the a magnet is aligned with the coil whose power is being switched on or off in order to minimizes switching noise. Switching is conveniently done using Hall effect devices controlling the switches, and a switching magnet, movable with the stage, having a length equal to the span. As the switching magnet comes within magnetic interaction distance of a Hall effect device, the Hall effect device closes its associated switch. As the switching magnet moves out of magnetic interaction distance with the Hall effect device, the Hall effect device closes its associated switch. The array of magnets includes one additional magnet outside each end of the span to maintain a sinusoidal magnetic field strength across the entire span.

6. 发明专利

DE3315617A1 未知
公开(公告)号：DE3315617A1
公开(公告)日：1983-12-01
申请号：DE3315617
申请日：1983-04-29
申请人： ANORAD CORP
发明人： CHITAYAT ANWAR
IPC分类号： H02K41/03 , G05D3/20 , H02K41/035 , G05D3/00
摘要： A linear DC motor adapted for driving a positioning table having a frame and a table displaceable in a linear direction has a toothed assembly affixed to one element thereof and an array of permanent magnets facing the toothed assembly mounted on the other element. Coils wound around the teeth of the toothed assembly and appropriately energized by DC produce a linear force which is effective to displace the table in a desired direction. When used with a position sensor and an appropriate control system, the table is controllable to a desired position. A set of brush members depending from the table contact a developed linear slip ring track for energizing the coils and for switching polarity of voltage to the coils at appropriate locations. In an embodiment where the coils are stationary on the frame and the magnets are disposed on the table, a power pickup arrangement movable with the brush members is incorporated into the brush and developed slip ring apparatus.

7. 发明专利

DE202007019591U1 Transportsystem mit Direktantrieb 未知
公开(公告)号：DE202007019591U1
公开(公告)日：2014-03-18
申请号：DE202007019591
申请日：2007-04-10
申请人： ANORAD CORP
IPC分类号： B65G43/10
摘要： Linearmotor-Steuersystem zum Steuern eines Lineartisches, der eine erste mobile magnetische Komponente und eine zweite mobile magnetische Komponente umfasst, wobei das System umfasst: eine erste stationäre magnetische Komponente, die magnetisch mit der ersten mobilen magnetischen Komponente in Eingriff kommt; eine zweite stationäre magnetische Komponente, die magnetisch mit der zweiten mobilen magnetischen Komponente in Eingriff kommt; eine erste Steuereinheit, die eine erste magnetische Verschiebung der ersten stationären magnetischen Komponente und der ersten mobilen magnetischen Komponente zueinander aktiviert, wenn sich der Lineartisch in einem ersten Bereich von Positionen befindet; und eine zweite Steuereinheit, die eine zweite magnetische Verschiebung der zweiten stationären magnetischen Komponente und der zweiten mobilen magnetischen Komponente zueinander aktiviert, wenn sich der Lineartisch in einem zweiten Bereich von Positionen befindet.

8. 发明专利

DE69907302T2 未知
公开(公告)号：DE69907302T2
公开(公告)日：2004-04-01
申请号：DE69907302
申请日：1999-02-26
申请人： ANORAD CORP
发明人： CHITAYAT ANWAR
IPC分类号： G01D5/14 , G05B11/00 , H02K41/00 , H02K41/02 , H02K41/03
摘要： A linear motor having permanent magnets on a movable stage, also includes non-interleaved armature windings on a path. The magnets are arranged m along the span A of the movable stage. The armature windings are arranged with n windings occupying a distance equal to the span S. A switching device automatically switches power on to the armature windings entering the span, and switches power off to the windings leaving the span. The switching is done when the a magnet is aligned with the coil whose power is being switched on or off in order to minimizes switching noise. Switching is conveniently done using Hall effect devices controlling the switches, and a switching magnet, movable with the stage, having a length equal to the span. As the switching magnet comes within magnetic interaction distance of a Hall effect device, the Hall effect device closes its associated switch. As the switching magnet moves out of magnetic interaction distance with the Hall effect device, the Hall effect device closes its associated switch. The array of magnets includes one additional magnet outside each end of the span to maintain a sinusoidal magnetic field strength across the entire span.

9. 发明专利

GB2352094B A linear motor with improved cooling 未知
公开(公告)号：GB2352094B
公开(公告)日：2001-02-21
申请号：GB0026032
申请日：1997-04-14
申请人： ANORAD CORP
发明人： CHITAYAT ANWAR
IPC分类号： H02K3/24 , H02K9/00 , H02K9/19 , H02K9/24 , H02K41/03 , H02K41/035
摘要： A linear motor has an elongate channel having a U-frame cross-section defining a pair of opposing sidewalls and a base. A plurality of magnets (31a, 31b) are mounted on the inward facing sides of the sidewalls to form an array of magnets spaced along the length of the channel. An armature is mounted in the channel for longitudinal movement in the U-frame. One or more electric coils (36) are mounted on the armature for effecting movement of the armature when a current is applied. An air duct (92a, 92b) is provided in the base of the U-frame and extends longitudinally along the channel. A plurality of orifices (94a, 94b) are spaced along the channel for either venting cooling air after it has been passed over the sidewalls towards the base of the channel, or, alternatively, for introducing cooling air from the duct into the channel and over the sidewalls.

10. 发明专利

GB2352094A Linear motor with improved cooling 未知
公开(公告)号：GB2352094A
公开(公告)日：2001-01-17
申请号：GB0026032
申请日：1997-04-14
申请人： ANORAD CORP
发明人： CHITAYAT ANWAR
IPC分类号： H02K3/24 , H02K9/00 , H02K9/19 , H02K9/24 , H02K41/03 , H02K41/035
摘要： A linear motor has an armature with at least one embedded coil (36). The armature is made up substantially non-magnetic material and includes a ceramic support member (70) having a recessed surface (71). The or each coil (36) is embedded in the recessed surface with epoxy resin. A heat sink in the form of a thermally conducting plate is in direct thermal contact with the ceramic support member to dissipate heat generated by the embedded coil or coils.

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