CN207819732U - Linear electric machine - Google Patents
Linear electric machine Download PDFInfo
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- CN207819732U CN207819732U CN201820182974.XU CN201820182974U CN207819732U CN 207819732 U CN207819732 U CN 207819732U CN 201820182974 U CN201820182974 U CN 201820182974U CN 207819732 U CN207819732 U CN 207819732U
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- mover
- stator
- electric machine
- magnet
- linear electric
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Abstract
This application discloses a kind of linear electric machines.There is linear electric machine stator, mover and guide rail, middle guide to be set on stator, and mover is arranged to along guide rail relative to stator movement.Stator is provided with stator coil unit.Mover is provided with permanent magnet unit.Permanent magnet unit includes back iron and the permanent magnet array that is arranged on back iron, the secondary magnet that permanent magnet array has main magnet and is arranged at least one end of permanent magnet unit.Secondary magnet is located on the outside of the outermost main magnet of permanent magnet array.The width of secondary magnet is less than the width of main magnet.The force oscillation of the linear electric machine of the utility model is small and Slot force is small.
Description
Technical field
The utility model is related to motors, and in particular to linear electric machine.
Background technology
As manufacturing technology develops to high yield, high-precision densification direction, control system of precise positioning is widely used in partly leading
The industries such as body manufacture, the printing of photovoltaic cell, circuit board printing, silk-screen printing, are provided with higher speed, position stability
With the functions such as processing flexibility.
However, current linear electric machine is still higher without the force oscillation and Slot force that preferably solve the problems, such as motor,
Cause product manufacturing precision limited.
Utility model content
The purpose of this utility model is to provide a kind of force oscillation and Slot force that can optimize motor, the line for making it reduce
Property motor.
To achieve the above object, the utility model provides a kind of linear electric machine, and the linear electric machine has stator, mover
And guide rail, wherein the guide rail is set on the stator, the mover is arranged to along the guide rail relative to described fixed
Son movement, the stator are provided with stator coil unit, and the mover is provided with permanent magnet unit, wherein the permanent magnet unit
Including back iron and the permanent magnet array that is arranged on the back iron, the permanent magnet array have main magnet and be arranged in it is described forever
Secondary magnet at least one end of magnet unit, wherein the pair magnet is located at the outermost main magnet of the permanent magnet array
The width of outside and the secondary magnet is less than the width of the main magnet.
Preferably, the pair magnet is parallel to the main magnet and places.
Preferably, the both ends of the permanent magnet unit are equipped with secondary magnet.
Preferably, the width W of the pair magnet1With the width W of the main magnet2There are following relationships：0.55W2≤W1≤
0.65W2。
Preferably, the distance between the pair magnet and adjacent main magnet are than adjacent the distance between two main magnets
Greatly.
Preferably, the distance between the pair magnet and adjacent main magnet are adjacent the distance between two main magnets
1.3-1.4 times.
Preferably, the main magnet and the secondary magnet are -6 ° along the inclined angle of the direction of motion and arrive 6 ° of ﹢.
Preferably, the mover is additionally provided with support plate, the back iron is fixed in the support plate.
Preferably, the stator is equipped with pedestal, the pedestal is equipped with the cavity for accommodating the stator coil unit,
And cooling fin is equipped on the side of the pedestal.
Preferably, the base interior is further provided with cooling duct, for being passed through cooling gas or cooling liquid.
Preferably, the vertical arrangement of linear electric machine, and the linear electric machine further comprises gravity-compensated device, it is described
Gravity-compensated device is associated with the mover and is used to compensate the gravity of the mover.
Preferably, the gravity-compensated device has cylinder, mover installation part and stator mount, wherein the mover is pacified
Piece installing is installed on the mover, and the stator mount is installed on the stator and the both ends of the cylinder connect respectively
It is connected to the mover installation part and the stator mount.
Preferably, the gravity-compensated device has mover end connection, stator end connection and spring, wherein institute
It states mover end connection and the stator end connection is connected to the mover and the stator, the both ends point of the spring
It is not connected to the mover end connection and the stator end connection.
Preferably, the gravity-compensated device includes counterweight, connects the hawser of counterweight and fixed pulley, wherein described solid
Fixed pulley is fixedly connected on the stator, and the hawser bypasses the fixed pulley, and one end of the hawser be connected to it is described
Counterweight, the other end are connected to the mover.
Preferably, the stator is equipped with pedestal, the upper side and lower side of the pedestal is arranged with stator coil unit, described
Linear electric machine have at least two movers, wherein at least one mover be arranged in the upside of the pedestal and can relative to positioned at
The stator coil unit motion of the upside of the pedestal, at least another mover are arranged in the downside of the pedestal and can be opposite
In positioned at the downside of the pedestal stator coil unit motion and at least two mover can independently be driven simultaneously
It can be driven simultaneously.
Preferably, the linear electric machine has at least two groups stator coil unit and at least two movers.
Preferably, at least two mover can independently can be driven by driving and simultaneously.
The force oscillation of the linear electric machine of the utility model is small and Slot force is small.
Description of the drawings
Fig. 1 be the utility model proposes a kind of linear electric machine stereogram.
Fig. 2 be the utility model proposes linear electric machine device explosive view.
Fig. 3 be the utility model proposes linear electric machine device the stator base unit with fin cooling structure.
Fig. 4 be the utility model proposes linear electric machine device permanent magnet array element.
Fig. 5 is that the utility model proposes the distribution diagram of magnetic line of force of linear electric machine device.
Fig. 6 be the utility model proposes linear electric machine device thrust constant curve graph.
Fig. 7 be the utility model proposes linear electric machine device Slot force data graphs when having side end pair magnet.
Fig. 8 be the utility model proposes linear electric machine device without side end pair magnet when tooth socket force data curve
Figure.
Fig. 9 be the utility model proposes linear electric machine device gravity-compensated device another embodiment structure chart.
Figure 10 be the utility model proposes linear electric machine device gravity-compensated device another embodiment schematic diagram.
Specific implementation mode
The preferred embodiment of the utility model is described in detail below with reference to attached drawing, understands this reality to become apparent from
With novel objects, features and advantages.It should be understood that embodiment shown in the drawings is not the limit to the scope of the utility model
System, and simply to illustrate that the connotation of technical solutions of the utility model.
In the following description, elaborate certain details to provide for the purpose for illustrating various disclosed embodiments
To the thorough understanding of various open embodiments.But it one skilled in the relevant art will recognize that can be in without these details
One or more details the case where put into practice embodiment.Under other circumstances, well known device associated with this application, knot
Structure and technology may not be illustrated in detail in or describe to avoid unnecessarily obscuring the description of embodiment.
Unless context has other needs, and in the whole instruction and claim, word " comprising " and its modification, such as
"comprising" and " having " should be understood meaning that is open, including, that is, should be interpreted that " including, but are not limited to ".
Expression is in conjunction with the embodiments described to be referred to " one embodiment " or " embodiment " throughout the specification
Certain features, structure or feature are included at least one embodiment.Therefore, in each position of the whole instruction " at one
In embodiment " or " in an embodiment " in appearance without all referring to identical embodiment.In addition, certain features, structure or feature
It can combine in any way in one or more embodiments.
Singulative " one " and " described " include plural object as used in the specification and appended, are removed
It is clearly dictated otherwise in non-text.It should be noted that term "or" is usually used with the meaning that it includes "and/or", unless literary
In clearly dictate otherwise.
In the following description, the structure and working method of the utility model in order to clearly demonstrate, will be by all multidirectionals
Word is described, but should be by "front", "rear", "left", "right", "outside", "inner", " outside ", " inside ", "upper", "lower"
Equal Word Understandings are not construed as word of limitation for convenience of term.
As shown in Figs. 1-2, there is linear electric machine 1 stator 2, mover 3 and guide rail 4, middle guide 4 to be set on stator 2, move
Son 3 is arranged to move relative to stator 2 along guide rail 4.Stator 2 is provided with stator coil unit 5.Mover 3 is provided with permanent magnetism
Body unit 6.Permanent magnet unit 6 includes back iron 13 and the permanent magnet array 7 being arranged on back iron.The magnetic that permanent magnet array 7 generates
The magnetic field interaction that field and stator coil unit 5 generate, thus pushes mover 3 relative to stator movement.
As shown in Figs. 1-3, stator 2 has pedestal 8.The upper side and lower side of pedestal 8 is arranged with stator coil unit 5.It is right
There are two movers 3 symmetrical above and below, one of mover 3 to be arranged in the upside of pedestal 8 and being capable of phase for Ying Di, linear electric machine 1
For the movement of stator coil unit 5 positioned at the upside of pedestal 8, another mover 3 is arranged in the downside of pedestal 8 and can be opposite
In the movement of stator coil unit 5 positioned at the downside of 8 pedestals.
Pedestal 8 is equipped with the cavity 9 for accommodating stator coil unit 5.Pedestal 8 is equipped with opposite facing two cavitys,
It is respectively used to accommodate the stator coil unit of the stator coil unit and downside of upside.Pedestal 8 is internally provided with cooling duct 10,
For being passed through cooling gas or cooling liquid.The size and number of cooling duct 10 can be arranged according to actual needs, such as motor
Power.The side of pedestal 8 is equipped with cooling fin 11.Cooling fin 11 may be integrally formed on pedestal 8, can also be used
Bonding, welding or other modes are connected to Base body.
As shown in Figures 2 and 4, mover 3 has permanent magnet unit 6 and support plate 12.Permanent magnet unit 6 is installed on support plate 12
On.Specifically, permanent magnet unit 6 is fixed on by its back iron 13 in support plate 12.Back iron has generally U-shaped cross section, with
It is easily installed permanent magnet.The shape and structure of support plate 12 can be arranged according to the application scenario of the linear electric machine.
As shown in figure 4, permanent magnet array has the polylith permanent magnet arranged successively.Two adjacent block permanent magnet polarity phases
Instead.Meanwhile permanent magnet array tilts certain angle, θ along the direction of motion, which can reduce the thrust of linear electric machine
Fluctuation, the range of tilt angle theta are generally -6 ° and arrive 6 ° of ﹢.Preferably, the range of tilt angle theta is generally -5 ° and arrives 5 ° of ﹢.
The permanent magnet array 7 of permanent magnet unit 6 has polylith main magnet 14 and is arranged at least one end of permanent magnet unit
On secondary magnet 15.Preferably, the both ends of permanent magnet unit are arranged with secondary magnet 15.Specifically, secondary magnet 15 is located at permanent magnetism
On the outside of the outermost main magnet of iron array.
The secondary magnet 15 at the both ends (can also be one end) of permanent magnet array can compensate the Slot force of motor.Secondary magnetic
15 angle of inclination of iron is consistent with main magnet angle.The width of secondary magnet 15 is smaller than the width of main magnet, width W1With main magnetic
The width W of iron2There are following relationships：0.55W2≤W1≤0.65W2.The side end pair magnet is at a distance from adjacent magnets than adjacent master
The spacing of magnet is big, generally 1.3-1.5 times, it is therefore preferable to 1.3-1.4 times.
Preferably, secondary magnet is parallel to main magnet placement.
Fig. 5 is that the utility model proposes the distribution diagram of magnetic line of force of linear electric machine device.Fig. 6 be the utility model proposes line
The thrust constant curve graph of property electric machine, horizontal axis is X to stroke in figure, and the longitudinal axis is thrust constant numerical value.Thrust constant is maximum
42.25N/A, minimum value 37.12N/A, force oscillation (42.25-37.12)/(42.25+37.12)=6.5%.Same Efficieney
Under, the force oscillation of existing linear electric machine is generally 10%~15%.As it can be seen that the thrust wave of the linear electric machine of the utility model
It is dynamic to substantially reduce.
Fig. 7 be the utility model proposes linear electric machine device tooth socket force data when having side end pair magnet curve
Figure.Horizontal axis is direction of motion stroke, and the longitudinal axis is Slot force numerical value.In the case where there is side end pair magnet, linear electric machine Slot force is most
Big value is 2.5N.Fig. 8 be the utility model proposes linear electric machine device without side end pair magnet when tooth socket force data
Curve graph.Horizontal axis is direction of motion stroke, and the longitudinal axis is Slot force numerical value.Linear electric machine tooth socket in the case of no side end pair magnet
Power maximum value is 9.9N.Comparison has side end pair magnet and the maximum Slot force without side end pair magnet, increases side end pair magnet, energy
Greatly reduce the Slot force of linear electric machine.
Further, when linear electric machine is when vertical application is arranged, in order to compensate for the gravity of mover, raising motor driving is controlled
The linear electric machine of the dynamic characteristic of system, the utility model further includes gravity-compensated device.The weight of several different modes is described below
Force compensating device.It should be understood that the application gravity-compensated device not limited to the following, but other can also be used any suitable
Gravity-compensated device, as long as it can realize corresponding technique effect.
As shown in Figure 1, the gravity-compensated device of the present embodiment is a kind of air-cylinder type gravity-compensated device 17.The gravity compensation
Device has cylinder 18, mover installation part 19 and stator mount 20.Mover installation part 19 is installed on the mover 3 of motor.It is fixed
Sub- installation part 20 is installed on the stator of motor.The both ends of cylinder 18 are connected to mover installation part 19 and stator mount
20.When mover moves under motor driving, piston motion in cylinder, the pressure of the pneumatic flow compensation stabilization of cylinder interior,
To offset the gravity part of mover, be conducive to improve mover quick response and stabilization.
The mover gravity of motor meets following relationship with cylinder parameters：
Mg=P0S,
Wherein, m is the quality of electric mover and load, and g is acceleration of gravity, P0For the supply gas pressure of cylinder, S is cylinder
Piston cross-section.
After offsetting electric mover gravity, electric mover carrys out the influence of balancing gravity without additional driving current, subtracts
The small fever of motor, and then improve the service life of motor.
Fig. 9 be the utility model proposes linear electric machine device gravity-compensated device another embodiment structure chart.
The gravity-compensated device of the present embodiment is made of a spring system, which has mover end connection 910, stator terminal
Connector 908 and spring 909.Mover end connection 910 and stator end connection 908 are connected to mover and stator.Bullet
The both ends of spring 909 are connected to the mover end connection and the stator end connection.Weight of the spring 909 in electric mover
Under force effect, there is initial spring elongation X0, be located at the stroke center of electric mover herein, initial relative to spring stretches
Long amount, has certain initial deformation amount, in the state for being completely counterbalanced by gravity.
When mover is located at the stroke center of motor, mover gravity and the spring parameter of motor meet following relationship：
Mg=KX0,
Wherein, m is the quality of electric mover and load, and g is acceleration of gravity, and K is the rigidity of spring, X0For initial bullet
Spring elongation.When mover is when moving up and down, there are additional spring rate power F=K (X on mover1-X0), pass through the rigid of spring
Degree and initial deformation design, mover servo motion introduce additional spring Low rigidity disturbance, and much smaller than the spring Reeb of gravity
It is dynamic.But it is equally beneficial for improving mover quick response and stabilization, reduces the fever of motor, and then improve the service life of motor.
Figure 10 be the utility model proposes linear electric machine device gravity-compensated device another embodiment schematic diagram.
The gravity-compensated device of the present embodiment is made of a gravity pulley balance system.The gravity pulley balance system includes counterweight
911, the hawser 912 of connection counterweight and fixed pulley 913.Fixed pulley 913 is fixedly connected on stator.Hawser 912 is around solid
Fixed pulley 913.One end of hawser 912 is connected to counterweight 911, and the other end is connected to mover or mover end load quality, is used in figure
Reference numeral 914 indicates the mover end load quality of motor.Counterweight 911 is equal with the quality of mover end load quality 914.When
When moving up and down, the driving load gravity on mover is balanced by counterweight mover completely, and mover servo motion is conducive to improve dynamic
Sub- quick response and stabilization, reduce the fever of motor, and then improve the service life of motor.
The preferred embodiment of the utility model has already been described in detail above, it is understood that if desired, embodiment can be changed
Aspect using the aspect, feature and design of various patents, application and publication provide other embodiment.
In view of detailed descriptions above, these and other variation can be made to embodiment.In general, in claim
In, term used should not be construed as limited to specific embodiment disclosed in description and claims, but be understood that
It includes whole equivalency ranges that all possible embodiment is enjoyed together with these claims to be.
Claims (10)
1. a kind of linear electric machine, the linear electric machine has stator, mover and guide rail, wherein the guide rail is set to the stator
On, the mover is arranged to along the guide rail relative to the stator movement, which is characterized in that the stator is provided with fixed
Sub-line coil unit, the mover are provided with permanent magnet unit, wherein the permanent magnet unit includes back iron and is arranged in the back of the body
Permanent magnet array on iron, the permanent magnet array have main magnet and are arranged at least one end of the permanent magnet unit
Secondary magnet, wherein the pair magnet is located on the outside of the outermost main magnet of the permanent magnet array and the pair magnet
Width is less than the width of the main magnet.
2. linear electric machine according to claim 1, which is characterized in that the pair magnet is parallel to the main magnet and places.
3. linear electric machine according to claim 1, which is characterized in that the both ends of the permanent magnet unit are equipped with secondary magnetic
Iron.
4. linear electric machine according to claim 1, which is characterized in that the width W of the pair magnet1With the main magnet
Width W2There are following relationships：0.55W2≤W1≤0.65W2。
5. linear electric machine according to claim 1, which is characterized in that it is described pair magnet and adjacent main magnet between away from
It is big from than the distance between two adjacent main magnets.
6. linear electric machine according to claim 1, which is characterized in that it is described pair magnet and adjacent main magnet between away from
From 1.3-1.4 times for the distance between two adjacent main magnets.
7. linear electric machine according to claim 1, which is characterized in that the main magnet and the secondary magnet are along the direction of motion
Inclined angle is -6 ° and arrives 6 ° of ﹢.
8. linear electric machine according to claim 1, which is characterized in that the stator is equipped with pedestal, and the pedestal is equipped with
Cavity for accommodating the stator coil unit, and cooling fin is equipped on the side of the pedestal；Preferably, described
Base interior is further provided with cooling duct, for being passed through cooling gas or cooling liquid.
9. linear electric machine according to claim 1, which is characterized in that the vertical arrangement of linear electric machine, and it is described linear
Motor further comprises that gravity-compensated device, the gravity-compensated device are associated with the mover and are used to compensate the mover
Gravity；Preferably, the gravity-compensated device has cylinder, mover installation part and stator mount, wherein the mover is installed
Part is installed on the mover, and the stator mount is installed on the stator and the both ends of the cylinder are separately connected
In the mover installation part and the stator mount；Preferably, the gravity-compensated device has mover end connection, stator
End connection and spring, wherein the mover end connection and the stator end connection be connected to the mover and
The both ends of the stator, the spring are connected to the mover end connection and the stator end connection；Preferably, institute
It states gravity-compensated device to include counterweight, connect the hawser of counterweight and fixed pulley, wherein the fixed pulley is fixedly connected on
The stator, the hawser bypasses the fixed pulley, and one end of the hawser is connected to the counterweight, and the other end is connected to
The mover.
10. linear electric machine according to claim 1, which is characterized in that the stator is equipped with pedestal, the upside of the pedestal
It is arranged with stator coil unit with downside, the linear electric machine has at least two movers, wherein at least one mover arrangement
In the upside of the pedestal and can be relative to the stator coil unit motion positioned at the upside of the pedestal, at least another is dynamic
Son is arranged in the downside of the pedestal and can be relative to the stator coil unit motion positioned at the downside of the pedestal, Yi Jisuo
Stating at least two movers can independently be driven and can while be driven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820182974.XU CN207819732U (en) | 2018-02-02 | 2018-02-02 | Linear electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820182974.XU CN207819732U (en) | 2018-02-02 | 2018-02-02 | Linear electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207819732U true CN207819732U (en) | 2018-09-04 |
Family
ID=63322012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820182974.XU Active CN207819732U (en) | 2018-02-02 | 2018-02-02 | Linear electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207819732U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023460A (en) * | 2018-02-02 | 2018-05-11 | 上海莫戈纳机电科技有限公司 | Linear electric machine |
-
2018
- 2018-02-02 CN CN201820182974.XU patent/CN207819732U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023460A (en) * | 2018-02-02 | 2018-05-11 | 上海莫戈纳机电科技有限公司 | Linear electric machine |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220727 Address after: 215299 room 1108, building 30, No. 568, Zhongshan South Road, East Taihu ecotourism Resort (Taihu new town), Wujiang District, Suzhou, Jiangsu Province Patentee after: Suzhou Shengtuo Semiconductor Technology Co.,Ltd. Address before: 200433 room 211-07, block a, building 11, No. 128 Xiangyin Road, Yangpu District, Shanghai Patentee before: SHANGHAI MOGENA ELECTROMECHANICAL TECHNOLOGY CO.,LTD. |
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| TR01 | Transfer of patent right |