CN114900008B - High-response long-service-life flat linear motor - Google Patents
High-response long-service-life flat linear motor Download PDFInfo
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- CN114900008B CN114900008B CN202210495287.4A CN202210495287A CN114900008B CN 114900008 B CN114900008 B CN 114900008B CN 202210495287 A CN202210495287 A CN 202210495287A CN 114900008 B CN114900008 B CN 114900008B
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- linear guide
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- 239000000758 substrate Substances 0.000 claims abstract description 39
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- 239000002356 single layer Substances 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 5
- 239000011295 pitch Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 235000000396 iron Nutrition 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/04—Machines with one rotor and two stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/12—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moving in alternate directions by alternate energisation of two coil systems
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Linear Motors (AREA)
Abstract
The flat linear motor with high response and long service life comprises a hollow frame, wherein openings are formed in two sides of the hollow frame; the rotor is arranged in the hollow frame in a reciprocating sliding manner along the length direction, two ends of the rotor can extend out of the opening, and the rotor comprises a substrate, a plurality of permanent magnets with magnetic poles alternately arranged on the front surface and the back surface of the substrate along the length direction, a first linear guide rail and a second linear guide rail which are arranged on the front surface of the substrate along the length direction, and a third linear guide rail and a fourth linear guide rail which are arranged on the back surface of the substrate along the length direction; the sliding block is fixedly connected with the hollow frame, a first stator coil is arranged corresponding to the first to fourth linear guide rails, and is fixed on the hollow frame and positioned above the rotor; and a second stator coil fixed to the hollow frame and located below the mover. The flat linear motor has long service life, and the mover is lighter and thinner and responds faster while keeping high strength.
Description
Technical Field
The invention relates to the field of linear motors, in particular to a high-response long-service-life flat linear motor.
Background
The Chinese patent ZL201921554142.7 discloses a symmetrical flat linear motor which consists of a rotor and two stator coils, and the bilateral linear motor effectively solves a series of problems caused by overlarge suction force between the stator and the rotor of the unilateral linear motor. But the patent adopts the composite material shaft sleeves at two ends as the guide holes, and the mover is guided by the guide holes and reciprocates. The composite material has the characteristics of easy loss, serious abrasion after long-time use, and in practice, the fact that the attractive force of the upper stator and the lower stator to the mover is large and is difficult to keep absolute balance is found, the mover is easy to bend upwards or downwards in the length direction to deform to cause air gap and other parameter changes, and therefore, the mover adopts a structure that two permanent magnet movers (the permanent magnet movers themselves comprise permanent magnets and back irons and are equivalent to three layers of back irons) are adhered to the front and back surfaces of the back irons so as to increase the overall strength, but the weight and the volume of the mover are certainly greatly increased.
However, in heavy-duty high-acceleration applications, the smaller the stator portion mass of the linear motor, the better, and the existing mover of the linear motor still consumes a large inertial force, resulting in insufficient dynamic response performance. How to realize the light weight and the thin and/or the high dynamic response of the mover is an urgent problem to be solved.
Accordingly, there is a need to develop a high-response long-life flat linear motor to solve one or more of the above-mentioned problems.
Disclosure of Invention
To solve at least one of the above problems, according to an aspect of the present invention, there is provided a high-response long-life flat linear motor, comprising:
A hollow frame having openings on both sides;
The rotor is arranged in the hollow frame in a reciprocating sliding manner along the length direction, two ends of the rotor can extend out of the opening, and the rotor comprises a substrate, a plurality of permanent magnets with magnetic poles alternately arranged on the front surface and the back surface of the substrate along the length direction, a first linear guide rail and a second linear guide rail which are arranged on the front surface of the substrate along the length direction, and a third linear guide rail and a fourth linear guide rail which are arranged on the back surface of the substrate along the length direction;
the sliding block is fixedly connected with the hollow frame and is arranged corresponding to the first to fourth linear guide rails;
the first stator coil is fixed on the hollow frame and is positioned above the rotor; and
And the second stator coil is fixed on the hollow frame and positioned below the rotor.
According to still another aspect of the present invention, the hollow frame includes a first coil fixing plate, a second coil fixing plate, a first supporting block, a second supporting block, a first end plate and a second end plate, the opening is provided between the first end plate and the second end plate, the first coil fixing plate and the second coil fixing plate are connected between the first end plate and the second end plate, the first stator coil is fixed to the first coil fixing plate, the second stator coil is fixed to the second coil fixing plate, the first supporting block is connected between a first side of the first coil fixing plate and a first side of the second coil fixing plate, and the second supporting block is connected between a second side of the first coil fixing plate and a second side of the second coil fixing plate.
According to still another aspect of the present invention, the high-response long-life flat linear motor further includes a position sensor mounted to the hollow frame through a bracket, the position sensor being used for sensing position information of the mover.
According to the invention, the permanent magnets are symmetrically attached to the front and back sides of the substrate, the permanent magnets on the same side are arranged along the length direction of the mover, and the polarities of the two adjacent permanent magnets are opposite and the distances between the two adjacent permanent magnets are equal.
According to still another aspect of the present invention, the first and second stator coils are coils with or without iron cores, symmetrically arranged on upper and lower sides of the mover and maintaining a predetermined air gap with the mover.
According to another aspect of the invention, the first stator coil and the second stator coil are connected with three-phase alternating current to generate two traveling wave magnetic fields, and the mover moves linearly along the sliding block under the combined action of the two traveling wave magnetic fields.
According to still another aspect of the present invention, the high-response long-life flat linear motor further includes a driver, which is used for synchronously controlling and supplying three-phase alternating current which changes synchronously to the first stator coil and the second stator coil, so as to generate traveling wave magnetic fields in the same direction, and the permanent magnets on the front side and the back side of the mover are subjected to the same magnetic field action relative to the stator direction, so that the thrust of the linear motor is doubled.
According to still another aspect of the present invention, the first supporting blocks are plural, and the plural first supporting blocks are arranged between the first end plate and the second end plate at intervals.
According to still another aspect of the present invention, the second supporting blocks are plural, and the plural second supporting blocks are arranged between the first end plate and the second end plate at intervals.
According to still another aspect of the present invention, the mover is composed of the substrate, a plurality of permanent magnets with magnetic poles alternately arranged, and first to fourth linear guides.
The invention can obtain one or more of the following technical effects:
Because the linear guide rail in the length direction is arranged, the attractive force applied to the mover by the upper stator and the lower stator is uniformly conducted and dispersed to the linear guide rail, the sliding block and the frame, so that the mover is still fully kept from bending/deforming in the length direction under the condition that only a single-layer back iron (a single-layer substrate) is arranged, the number and the thickness of the back iron can be reduced, the quality of the mover is greatly reduced, and the response speed is improved;
Compared with a symmetrical flat linear motor in the prior art (ZL 201921554142.7), the mass and the thickness of the mover can be reduced by about 3/4, a more compact structure is realized, and the deformation of the mover is avoided;
bending/deformation of the rotor in the length direction is avoided, and air gap parameters are kept stable;
the pressure born by the linear guide rail is sharply reduced through the supporting block, and the service life is effectively prolonged.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
Fig. 1 is a schematic view of a high-response long-life flat linear motor according to a preferred embodiment of the present invention.
Fig. 2 is a schematic diagram illustrating a positional relationship among the first stator coil, the second stator coil, the substrate, and the permanent magnet in fig. 1.
Fig. 3 is a schematic diagram showing the cooperation of a mover and a slider of a high-response long-life flat linear motor according to a preferred embodiment of the present invention.
Fig. 4 is a schematic diagram illustrating a positional relationship between the first stator coil and the first coil fixing plate in fig. 1.
Fig. 5 is a schematic diagram showing driving signals of a driver of a high-response long-life flat linear motor according to a preferred embodiment of the present invention.
Detailed Description
The present invention is described in its best mode by the following preferred embodiments with reference to the accompanying drawings, and the detailed description herein is to be construed as limiting the invention, since various changes and modifications can be made without departing from the spirit and scope of the invention.
Example 1
According to a preferred embodiment of the present invention, referring to fig. 1 to 4, there is provided a high-response long-life flat linear motor characterized by comprising:
A hollow frame having openings on both sides;
A mover reciprocally slidably disposed in the hollow frame in a length direction and having both ends protruded out of the opening, the mover including a base plate 3, a plurality of permanent magnets 2 alternately arranged in a plurality of poles mounted on both sides of the base plate 3 in the length direction, a first linear guide 5 and a second linear guide 6 arranged on the front side of the base plate 3 in the length direction, and a third linear guide 7 and a fourth linear guide 8 arranged on the back side of the base plate 3 in the length direction;
a slider 9 fixedly connected to the hollow frame and disposed in correspondence with the first to fourth linear guides 8;
A first stator coil 1 fixed to the hollow frame and located above the mover; and
And a second stator coil 4 fixed to the hollow frame and positioned below the mover.
According to a further preferred embodiment of the present invention, the hollow frame comprises a first coil fixing plate 10, a second coil fixing plate 11, a first support block 12, a second support block 12, a first end plate 13 and a second end plate 14, the opening is provided between the first end plate 13 and the second end plate 14, the first coil fixing plate 10 and the second coil fixing plate 11 are connected between the first end plate 13 and the second end plate 14, the first stator coil 1 is fixed to the first coil fixing plate 10, the second stator coil 4 is fixed to the second coil fixing plate 11, the first support block 12 is connected between a first side of the first coil fixing plate 10 and a first side of the second coil fixing plate 11, and the second support block 12 is connected between a second side of the first coil fixing plate 10 and a second side of the second coil fixing plate 11.
Preferably, a first limiting block 16 and a second limiting block 17 are respectively arranged at two ends of the mover and used for limiting the travel of the mover.
According to still another preferred embodiment of the present invention, the high-response long-life flat linear motor further includes a position sensor mounted to the hollow frame through the bracket 15, the position sensor being for sensing position information of the mover.
According to another preferred embodiment of the present invention, the permanent magnets 2 are symmetrically attached to the front and back sides of the substrate 3, the permanent magnets 2 on the same side are arranged along the length direction of the mover, and the polarities of two adjacent permanent magnets 2 are opposite and the pitches are equal.
According to still another preferred embodiment of the present invention, the first stator coil 1 and the second stator coil 4 are coils with or without iron cores, and the first stator coil 1 and the second stator coil 4 are symmetrically arranged on both upper and lower sides of the mover while maintaining a predetermined air gap with the mover.
According to a further preferred embodiment of the invention, the first stator coil 1 and the second stator coil 4 are connected with three-phase alternating current to generate two travelling wave magnetic fields, and the mover moves linearly along the sliding block 9 under the combined action of the two travelling wave magnetic fields.
According to another preferred embodiment of the present invention, the high-response long-life flat linear motor further includes a driver, which is used for synchronously controlling and supplying three-phase alternating current which changes synchronously to the first stator coil 1 and the second stator coil 4, so as to generate travelling wave magnetic fields in the same direction, and the permanent magnets 2 on the front side and the back side of the mover are subjected to the same magnetic field relative to the stator direction, so that the thrust of the linear motor is doubled.
According to a further preferred embodiment of the present invention, the first support blocks 12 are plural, and the plural first support blocks 12 are arranged between the first end plate 13 and the second end plate 14 at intervals.
According to a further preferred embodiment of the present invention, the second supporting blocks 12 are plural, and the plural second supporting blocks 12 are arranged between the first end plate 13 and the second end plate 14 at intervals.
According to a further preferred embodiment of the invention, the mover consists of the base plate 3, a plurality of permanent magnets 2 with alternately arranged poles, and first to fourth linear guides 8.
There is further provided in accordance with yet another preferred embodiment of the present invention a high response long life flat linear motor including a primary symmetrically arranged double coil, a secondary double sided magnetic plate, a motor frame and a position sensor.
Preferably, the secondary comprises a substrate 3 and a plurality of permanent magnets 2 attached to the front and back sides of the substrate 3, wherein the permanent magnets 2 are symmetrically attached to the front and back sides of the substrate 3, and two adjacent permanent magnets 2 have opposite polarities and equal intervals.
Preferably, the primary comprises a first coil and a second coil, the first coil and the second coil not being limited to a cored coil and a coreless coil; the first coil and the second coil are symmetrically arranged on two sides of the double-sided magnetic plate as stators. The first coil and the second coil are connected with three-phase alternating current to generate two traveling wave magnetic fields, and the secondary double-sided magnetic pasting plate moves linearly under the action of the traveling wave magnetic fields and generates thrust.
Preferably, the frame comprises a coil fixing plate, a supporting block 12, end plates and linear guide rails, the front and back sides of the two side edges of the double-sided tape substrate 3 are provided with a first linear guide rail 5, a second linear guide rail 6, a third linear guide rail 7 and a fourth linear guide rail 8, each of the four linear guide rails is provided with N1 sliding blocks, and preferably, N1 is 2, 3, 4 or more. The four linear guide rails are parallel to each other.
Preferably, the first coil is mounted on one side of a first coil fixing plate 10, the second coil is mounted on one side of a second coil fixing plate 11, the first coil fixing plate 10 and the second coil fixing plate 11 are assembled with the supporting blocks 12 on both sides, the supporting blocks 12 share N2 groups, and the supporting blocks are symmetrically mounted between the first coil fixing plate 10 and the second coil fixing plate 11; preferably, N2 is 2, 3, 4 or more.
Preferably, all the sliding blocks on the four guide rails are fixedly connected with the first coil fixing plate 10 and the second coil fixing plate 11 through screws, and a first end plate 13 and a second end plate 14 are arranged at two ends of the first coil fixing plate 10 and the second coil fixing plate 11; the air gap between the double-sided magnetic plate and the first coil and the second coil is determined by the relative positions of the first coil mounting plate, the second coil mounting plate, the support block 12 and the substrate 3.
Preferably, the length of the two-sided magnetic adhesion plate of the said mover is determined by the travel of the linear motor, the said base plate 3 one side is equipped with the position sensor support 15, the said position sensor support 15 is equipped with the position sensor and used for providing the position information feedback, the said two-sided magnetic adhesion plate can drive the said first linear guide 5, second linear guide 6, third linear guide 7 and fourth linear guide 8 to reciprocate along the guide straight line of the slide block.
Preferably, the first coil and the second coil are synchronously controlled by a driver, three-phase alternating currents which are synchronously changed are introduced into the first coil and the second coil by the driver, travelling wave magnetic fields in the same direction are generated, and permanent magnets 2 on the front side and the back side of the rotor are subjected to the same magnetic field action relative to the stator direction, so that the aim of doubling the thrust of the linear motor is fulfilled.
Advantageously, the double-sided magnet and double-coil symmetrical structure is adopted, so that the thrust of the linear motor is doubled, and meanwhile, the symmetrical structure can effectively balance the huge suction force between the single-sided coil and the permanent magnet 2, so that the rigidity requirement of the substrate 3 on which the permanent magnet 2 is mounted is obviously reduced, the permanent magnet 2 can be mounted by using the light and thin substrate 3, and the dynamic response and stability of the linear motor are greatly improved. Furthermore, the linear motor frame can sharply reduce the positive pressure of the linear motion pair on the basis of a symmetrical structure, and long service life and maintenance free are realized. In addition, based on the structural design of the linear motor, the linear motor with high response and long service life with larger thrust can be manufactured.
Preferably, the linear motor adopts double coils as a stator, the mover double-sided magnetic plates move linearly between two groups of symmetrically arranged coils, the double-sided magnetic plates adopt an ultrathin structure, the quality of mover parts is effectively reduced on the basis of double thrust, and the dynamic response and stability of the linear motor are greatly improved. In addition, the linear motor frame can sharply reduce the positive pressure of the linear motion pair on the basis of a symmetrical structure, and long-life maintenance-free is realized.
There is further provided in accordance with yet another preferred embodiment of the present invention a high response long life flat linear motor including a primary double sided magnetically laminated plate, a secondary symmetrically arranged double coil, a motor frame and a position sensor.
Preferably, the permanent magnets 2 are symmetrically adhered to the front side and the back side of the substrate 3 through special glue, and the permanent magnets 2 are equally spaced; the first linear guide rail 5, the second linear guide rail 6, the third linear guide rail 7 and the fourth linear guide rail 8 are fixedly connected with the base plate through bolts, two sliding blocks 9 are arranged on the first linear guide rail 5, the second linear guide rail 6, the third linear guide rail 7 and the fourth linear guide rail 8, the first coil 1 is fixedly connected with the first coil fixing plate 10 through bolts, the second coil 4 is fixedly connected with the second coil fixing plate 11 through bolts, the supporting blocks 12 are fixedly connected between the first coil fixing plate 10 and the second coil fixing plate 11 through bolts, and the sliding blocks are fixedly connected with the coil fixing plates on the corresponding sides through bolts; from this, it was determined that the air gap in the present invention was 0.6mm to 1mm.
Preferably, the upper and lower surfaces of the permanent magnets are respectively N-pole or S-pole, the polarities of two adjacent permanent magnets are opposite, the distance between two adjacent permanent magnets with different magnetic poles is 22.5mm, and the distance between two adjacent permanent magnets with the same magnetic pole is 45mm.
Preferably, the sensor support 15 is fixedly connected with the substrate 3 through bolts, a position sensor (not shown in the figure) is disposed on the sensor support, and is used for providing position information feedback, and the first limiting block 16 and the second limiting block 17 are fixedly connected with two ends of the substrate 3 through bolts, and are used for limiting the movable range of the substrate 3.
Preferably, a variable three-phase alternating current is supplied into the first coil 1 and the second coil 4, and the first coil 1 and the second coil 4 generate a specific travelling wave magnetic field under the action of the alternating current. The permanent magnet 2 receives thrust in the direction opposite to the stator in the traveling wave magnetic field, and the linear motor can output double thrust because the thrust direction generated by the first coil 1 is the same as the thrust direction generated by the second coil 4; the square wave position control is performed by driving the linear motor by using a driver, and referring to fig. 5, a motor square wave motion deceleration point 18 and a motor square wave motion acceleration point 19 represent the acceleration and deceleration capabilities of the linear motor, and the shorter the time required for the linear motor to accelerate or decelerate to a certain designated speed, the more excellent the dynamic response of the linear motor.
Preferably, the substrate 3 adopts an ultrathin design, so that the overall quality of the mover part is obviously reduced compared with that of a traditional flat motor, and meanwhile, the thrust template of the linear motor is considered, so that the acceleration of the linear motor is improved by 2-3 times compared with that of the traditional linear motor, and the dynamic performance and stability of the motor are obviously improved.
According to still another preferred embodiment of the present invention, there is also provided a high-response long-life flat linear motor including primary symmetrically arranged double coils, a secondary double-sided magnet plate, a motor frame, and a position sensor, characterized in that: the linear motor primary symmetrical double-coil comprises a first coil and a second coil which are used as stators, the secondary double-sided magnetic plate is used as a rotor, and the two stator coils are symmetrically arranged on two sides of the rotor double-sided magnetic plate; the first coil is fixedly connected with the first coil fixing plate, and the second coil is fixedly connected with the second coil fixing plate; the double-sided magnetic plate is provided with a linear guide rail, a sliding block on the linear guide rail is fixedly connected with the first coil fixing plate and the second coil fixing plate, and the first coil fixing plate and the second coil fixing plate are fixedly connected through the supporting block; the reading head and ruler of the position sensor are respectively fixed on the coil fixing plate and the double-sided magnetic adhesion plate.
According to another preferred embodiment of the present invention, the secondary double-sided magnetic plate comprises a substrate and a plurality of permanent magnets attached to the front and back sides of the substrate, wherein the permanent magnets are symmetrically attached to the front and back sides of the substrate, and two adjacent permanent magnets have opposite polarities and equal spacing;
According to still another preferred embodiment of the present invention, the primary includes a first coil and a second coil, the first coil and the second coil are not limited to a cored coil and a coreless coil; the first coil and the second coil are symmetrically arranged on two sides of the double-sided magnetic plate as stators. The first coil and the second coil are connected with three-phase alternating current to generate two traveling wave magnetic fields, and the secondary double-sided magnetic pasting plate moves linearly under the action of the traveling wave magnetic fields and generates thrust.
According to another preferred embodiment of the present invention, the frame comprises a coil fixing plate, a supporting block, end plates and linear guide rails, wherein the front and back surfaces of two side edges of the double-sided tape substrate are provided with a first linear guide rail, a second linear guide rail, a third linear guide rail and a fourth linear guide rail, each of the four linear guide rails is provided with N1 sliding blocks, and preferably, N1 is 2, 3, 4 or more. The four linear guide rails are parallel to each other.
According to another preferred embodiment of the present invention, the first coil is mounted on one side of a first coil fixing plate, the second coil is mounted on one side of a second coil fixing plate, the first coil fixing plate and the second coil fixing plate are assembled with the supporting blocks on both sides, the supporting blocks have N2 groups in total, and the supporting blocks are symmetrically mounted between the first coil fixing plate and the second coil fixing plate; preferably, N2 is 2, 3, 4 or more.
According to another preferred embodiment of the present invention, all the sliding blocks on the four guide rails are fixedly connected with the first coil fixing plate and the second coil fixing plate through screws, and two ends of the first coil fixing plate and the second coil fixing plate are provided with a first end plate and a second end plate; the air gap between the double-sided magnetic adhesion plate and the first coil and the second coil is determined by the relative positions of the first coil mounting plate, the second coil mounting plate, the supporting block and the base plate.
According to another preferred embodiment of the present invention, the length of the mover double-sided magnetic plate is determined by the stroke of the linear motor, a position sensor support is mounted on one side of the substrate, a position sensor is mounted on the position sensor support and is used for providing position information feedback, and the double-sided magnetic plate can drive the first linear guide rail, the second linear guide rail, the third linear guide rail and the fourth linear guide rail to reciprocate linearly along the slide block guide.
At least one or more of the following technical effects can be obtained by the invention:
Because the linear guide rail in the length direction is arranged, the attractive force applied to the mover by the upper stator and the lower stator is uniformly conducted and dispersed to the linear guide rail, the sliding block and the frame, so that the mover is still fully kept from bending/deforming in the length direction under the condition that only a single-layer back iron (a single-layer substrate) is arranged, the number and the thickness of the back iron can be reduced, the quality of the mover is greatly reduced, and the response speed is improved;
compared with the symmetric flat linear motor in the prior art, the mass and the thickness of the rotor can be reduced by about 3/4, a more compact structure is realized, and the deformation of the rotor is avoided;
bending/deformation of the rotor in the length direction is avoided, and air gap parameters are kept stable;
the pressure born by the linear guide rail is sharply reduced through the supporting block, and the service life is effectively prolonged.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A high response long life flat linear motor, comprising:
The hollow frame comprises a first coil fixing plate, a second coil fixing plate, a first supporting block, a second supporting block, a first end plate and a second end plate, wherein the first end plate and the second end plate are vertically arranged in parallel, openings are formed in the middle of the first end plate and the second end plate, the first coil fixing plate and the second coil fixing plate are horizontally arranged and connected between the first end plate and the second end plate, the first supporting block is connected between the first side of the first coil fixing plate and the first side of the second coil fixing plate, and the second supporting block is connected between the second side of the first coil fixing plate and the second side of the second coil fixing plate;
The rotor is arranged in the hollow frame in a reciprocating sliding manner along the length direction, two ends of the rotor can extend out of the opening, the rotor comprises a single-layer ultrathin substrate which is horizontally arranged, a plurality of permanent magnets which are arranged on the front surface and the back surface of the substrate along the length direction in an alternating manner, a first linear guide rail and a second linear guide rail which are arranged on the front surface of the substrate along the length direction, and a third linear guide rail and a fourth linear guide rail which are arranged on the back surface of the substrate along the length direction, and the rotor is only provided with the single-layer ultrathin substrate;
the sliding block is fixedly connected with the hollow frame and is arranged corresponding to the first to fourth linear guide rails;
the first stator coil is fixed on the hollow frame and is positioned above the rotor; and
A second stator coil fixed to the hollow frame and located below the mover;
The two ends of the rotor are respectively provided with a first limiting block and a second limiting block, the middle of the first limiting block is provided with a hole, the length of the rotor is larger than that of the hollow frame, the first supporting block and the second supporting block are used for reducing the pressure born by the first to fourth linear guide rails, the first to fourth linear guide rails which are respectively arranged on the front side and the back side of the substrate along the length direction enable attractive force of the upper and lower stator coils and the second stator coils applied to the rotor to be uniformly conducted and dispersed to the first to fourth linear guide rails, the sliding block and the hollow frame, and therefore the rotor is kept from bending deformation in the length direction under the condition that only the single-layer ultrathin substrate is arranged.
2. The long life flat linear motor of claim 1, wherein said first stator coil is fixed to a first coil fixing plate and said second stator coil is fixed to a second coil fixing plate.
3. The high-response long-life flat linear motor of claim 1, further comprising a position sensor mounted to the hollow frame by a bracket, the position sensor for sensing position information of the mover.
4. The high-response long-life flat linear motor according to any one of claims 1 to 3, wherein the permanent magnets are symmetrically attached to the front and back surfaces of the substrate, the permanent magnets on the same surface are arranged along the length direction of the mover, and the polarities of the adjacent two permanent magnets are opposite and the pitches are equal.
5. The long life flat linear motor of claim 4, wherein said first and second stator coils are coils with or without iron cores, said first and second stator coils being symmetrically arranged on upper and lower sides of the mover while maintaining a predetermined air gap with the mover.
6. The high-response long-life flat linear motor of claim 4, wherein said first stator coil and said second stator coil are connected with a three-phase alternating current to generate two traveling wave magnetic fields, and said mover moves linearly along the slider under the combined action of said two traveling wave magnetic fields.
7. The high-response long-life flat linear motor according to claim 4, further comprising a driver for synchronously controlling and supplying three-phase alternating current which changes synchronously to the first stator coil and the second stator coil, generating traveling wave magnetic fields in the same direction, wherein permanent magnets on the front side and the back side of the mover are subjected to the same magnetic field relative to the stator direction, and realizing the double thrust of the linear motor.
8. The high-response long-life flat linear motor of claim 2, wherein the first support blocks are plural, and the plural first support blocks are arranged between the first end plate and the second end plate at intervals.
9. The high-response long-life flat linear motor of claim 8, wherein said second support blocks are plural, and the plural second support blocks are arranged between the first end plate and the second end plate at intervals.
10. The high-response long-life flat linear motor according to claim 4, wherein said mover is composed of said base plate, a plurality of permanent magnets whose magnetic poles are alternately arranged, and first to fourth linear guides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210495287.4A CN114900008B (en) | 2022-05-07 | 2022-05-07 | High-response long-service-life flat linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210495287.4A CN114900008B (en) | 2022-05-07 | 2022-05-07 | High-response long-service-life flat linear motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114900008A CN114900008A (en) | 2022-08-12 |
| CN114900008B true CN114900008B (en) | 2024-05-14 |
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| JP2002034231A (en) * | 2000-07-19 | 2002-01-31 | Yaskawa Electric Corp | Linear slider |
| CN103208903A (en) * | 2013-03-06 | 2013-07-17 | 北京工业大学 | Linear motor for pump |
| CN103236774A (en) * | 2013-03-06 | 2013-08-07 | 北京工业大学 | Bilateral flat-plate type linear motor |
| CN210201685U (en) * | 2019-09-18 | 2020-03-27 | 上海视疆科学仪器有限公司 | Symmetrical maintenance-free flat plate linear motor |
| WO2020140178A1 (en) * | 2018-12-30 | 2020-07-09 | 中国科学院沈阳自动化研究所 | On-orbit launching apparatus |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1617545A3 (en) * | 2004-07-16 | 2006-12-27 | Shin-Etsu Chemical Co., Ltd. | Linear motor for use in machine tool |
| KR101092212B1 (en) * | 2009-06-30 | 2011-12-13 | 한국전기연구원 | Doubly Salient Permanent Magnet Electric Machine |
| CN105391260B (en) * | 2015-11-16 | 2018-01-16 | 江苏大学 | Double-stator permanent magnet vernier linear electric motors and the design method for increasing magnetic field modulation effect |
| EP3367068A1 (en) * | 2017-02-27 | 2018-08-29 | KONE Corporation | Method for levitation control of a linear motor, method for determining a position of a linear motor, inductive sensing device, and elevator system |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002034231A (en) * | 2000-07-19 | 2002-01-31 | Yaskawa Electric Corp | Linear slider |
| CN103208903A (en) * | 2013-03-06 | 2013-07-17 | 北京工业大学 | Linear motor for pump |
| CN103236774A (en) * | 2013-03-06 | 2013-08-07 | 北京工业大学 | Bilateral flat-plate type linear motor |
| WO2020140178A1 (en) * | 2018-12-30 | 2020-07-09 | 中国科学院沈阳自动化研究所 | On-orbit launching apparatus |
| CN210201685U (en) * | 2019-09-18 | 2020-03-27 | 上海视疆科学仪器有限公司 | Symmetrical maintenance-free flat plate linear motor |
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