CN205070850U - Permanent magnetism induced magnetism mechanical axis is to damping structure - Google Patents
Permanent magnetism induced magnetism mechanical axis is to damping structure Download PDFInfo
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- CN205070850U CN205070850U CN201520863022.0U CN201520863022U CN205070850U CN 205070850 U CN205070850 U CN 205070850U CN 201520863022 U CN201520863022 U CN 201520863022U CN 205070850 U CN205070850 U CN 205070850U
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Abstract
The utility model relates to a permanent magnetism induced magnetism mechanical axis is to damping structure, but the kinematic axis including an axial motion, it is still including setting up around the kinematic axis lateral wall to along the magnet that lures of kinematic axis axial setting, it is vice still to be provided with location magnetic force on the kinematic axis, location magnetic force is vice including setting up in the kinematic axis surface to two at least permanent magnetism block that follow the axial direction parallel arrangement of kinematic axis, the magnetic pole of outstanding two adjacent permanent magnetism block tip in the kinematic axis surface is opposite, and has a distance between two adjacent permanent magnetism block for B's clearance, and the outstanding permanent magnetism block who sets up and lure the magnet to set up in opposite directions, and along equidistant at least one magnetic resistance groove that is provided with of axial direction of kinematic axis on luring the magnet, the axial width b in magnetic resistance groove equal the clearance apart from B, and the clearance between two adjacent permanent magnetism block is located one of them magnetic resistance groove directly over.
Description
Technical field
The utility model relates to magnet application and damping structure technical field, particularly relates to the axial damping structure of a kind of permanent magnet induction magnetic force.
Background technology
Permanent magnet to keep the magnet of its magnetic to claim for a long time, as natural magnetite (magnetic iron ore) and artificial magnet's (alnico alloy) etc.; In magnet except permanent magnet, also there is the just magnetic electromagnet that need be energized; As everyone knows, magnetic comprises N pole and S pole, is that homopolar-repulsion and heteropole are attracting between N pole and S pole, and the magnetic line of force around magnet is between N pole and S pole.For magnetic induction material or lure magnetic material (hereinafter referred to as luring magnet), lure the objects such as magnetic material such as iron, when the N pole of magnetic or S are extremely close to magnetic strength material, permanent magnet produces attraction to luring magnet, this attraction is because the magnetic pole of magnetic material induces opposite pole on inductive material, and opposite pole mutual attractive force, finally cause permanent magnet to produce attraction to luring magnet.As depicted in figs. 1 and 2, be the schematic diagram of permanent magnet to magnetic induction material producing magnetisation power.On the magnetic line of force or magnetic induction line 7, tangential direction of certain point is exactly the magnetic direction of this point, if magnetic field does not change, the direction of magnetic induction line 7 is determined, therefore its magnetic induction line also can not change.If want the direction changing magnetic field, will add another magnetic field around magnetic field, two magnetic fields are superimposed, just can change the direction in former magnetic field.
In Fig. 1, the S of permanent magnet, extremely to luring magnets generate magnetic force, lures the location point P1 on magnet to be positioned at immediately below S pole, and the magnetic force that P1 point place is subject to is the strongest, and lure the location point P2 on magnet to depart from immediately below S pole, the magnetic force suffered by it is more weak than location point place P1.Location point P2 departs from immediately below S pole far away, and suffered magnetic force is less.If keep at permanent magnet and lure magnet apart from constant, permanent magnetic material is moved right, when permanent magnet moves to position P2, makes a P2 be positioned at immediately below permanent magnet, induced magnetism now suffered by location point P2 is maximum, and the magnetic force that location point P1 place is subject to is relatively little.In Fig. 2, similar to Fig. 1, the N of permanent magnet, extremely to luring magnets generate magnetic force, lures the location point P1 on magnet to be positioned at immediately below S pole, and the magnetic force that P1 place is subject to is the strongest, lures the location point P2 on magnet to depart from immediately below N pole, and the magnetic force suffered by it is located 1 weak than position P.Location point P2 departs from immediately below N pole far away, and suffered magnetic force is less.If keep at permanent magnet and lure magnet apart from constant, permanent magnetic material is moved right, when permanent magnet moves to P2 place, position, makes P2 place be positioned at immediately below permanent magnet, induced magnetism now suffered by location point P2 is maximum, and the magnetic force that P1 place, position is subject to is relatively little.
To sum up, permanent magnet is uncertain to the position luring magnet to apply magnetic force, and permanent magnet is placed on which position luring magnet, it right over there applies a magnetic force, if need to require keep permanent magnet and lure the position of magnets generate magnetic force for time fixing, this magnetic force structure is just undesirable.And in the actual use of magnetic force mechanism, need group of magnets zoarium with sense magnet when magnetic attraction, when it attracts each other contact, the position of contact or the position of contact trend are fixing, instead of random position.If design a kind of permanent magnet induction magnetic force detent mechanism that can automatically locate and be applied, many problems can be solved.
And damping refers to that any vibrational system is in vibration, the characteristic that the Oscillation Amplitude caused due to external influence or system reason inherently declines gradually, and the quantization signifying of this characteristic; In mechanical physics, i.e. the reduction of the energy of system---damping vibration not all causes because of " resistance ", and with regard to mechanical oscillation, one is because of frictional resistance heat-dissipating, and the mechanical energy of system is reduced, and be converted into interior energy, this damping is frictional damping; Another kind is the vibrations that system causes particle around, and the energy of system is radiate to surrounding gradually, becomes the energy of ripple, this damping is radiation damping.And the effect of damping mainly contains following five aspects:
(1) damping contributes to the resonance amplitude reducing mechanical structure, thus avoids structure to cause structural damage because vibrations stress reaches capacity;
(2) damping contributes to after mechanical system is subject to temporary impact, returning to stable state very soon;
(3) damping contributes to reducing the acoustic radiation because of mechanical oscillation generation, reduces mechanical noise.Many mechanical components, as the housing of transport facility, the noise of saw blade, are mainly caused by vibration, adopt damping effectively can suppress resonance, thus reduce noise;
(4) machining accuracy, certainty of measurement and the operating accuracy of all kinds of lathe, instrument etc. can be improved.All kinds of machine especially precision machine tool, under dynamic environment, need of work has higher shock resistance and dynamic stability, can improve its dynamic property greatly by various impedance bundary;
(5) damping contributes to the ability reducing structure transmitting vibrations.In the vibration insulation structure design of mechanical system, reasonably use damping, the Be very effective raising of vibration isolation, vibration damping can be made.
And if above-mentioned permanent magnet induction magnetic force and damping are combined, and design the axial damping structure of a kind of permanent magnet induction magnetic force, great using value will be had in industry-by-industry field.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, adapts to reality need, provides a kind of permanent magnet induction magnetic force axial damping structure.
In order to realize the purpose of this utility model, the technical scheme that the utility model adopts is:
Design the axial damping structure of a kind of permanent magnet induction magnetic force, comprising one can the kinematic axis of axial motion; It also comprises and is arranged at described kinematic axis lateral wall circumference, and axially arrange along described kinematic axis lure magnet, described kinematic axis is also provided with positioned magnetic pair; Described positioned magnetic pair comprises and is arranged at described kinematic axis surface, and along at least two permanent magnets that the axial direction of kinematic axis be arranged in parallel; The surface of kinematic axis is given prominence in the end of described permanent magnets, and the magnetic pole protruding from adjacent two permanent magnets ends on kinematic axis surface is contrary, and have the gap that a distance is B between adjacent two permanent magnets, and projecting permanent magnets and the described magnet that lures are arranged in opposite directions;
Further, and have at least one magnetic resistance groove described luring on magnet along the axial direction spaced set of kinematic axis, the axial width b of described magnetic resistance groove equals the distance B in described gap, and the gap between adjacent two permanent magnets is positioned at directly over one of them magnetic resistance groove, and the gap between adjacent two permanent magnets and the magnetic resistance groove below this gap just right.
Further, the width of described each permanent magnets is identical, and gap between adjacent two magnetic resistance grooves is identical with the width of described permanent magnets.
Described kinematic axis is cylinder or rectangular structure, described in lure magnet to be the tubular structure of its at least one end opening, and described kinematic axis can axially move luring in magnet of described tubular structure.
Further, the positioned magnetic pair be arranged on described kinematic axis is at least two, and the secondary axis along described kinematic axis of multiple positioned magnetic be arranged in parallel, and the gap in same positioned magnetic pair between adjacent two permanent magnets is positioned at the top of one of them magnetic resistance groove, and the gap in same positioned magnetic pair between adjacent two permanent magnets and the magnetic resistance groove below this gap just right.
Further, the distance between adjacent two positioned magnetic pairs equals the axial width b of described magnetic resistance groove.
Further, the multiple positioned magnetic pairs be positioned on same axis form the secondary group of a positioned magnetic, and the multiple magnetic resistance grooves be positioned on this same axis below multiple positioned magnetic pair form a location magnetic resistance groove group; The positioned magnetic pair group be arranged on described kinematic axis is at least two groups, and is symmetricly set in the surface of described kinematic axis; With described positioned magnetic pair organize arrange in opposite directions lure the inwall of magnet is provided with and organize just right location magnetic resistance groove group with this positioned magnetic pair, and the gap in same positioned magnetic pair group between adjacent two permanent magnets is positioned at the just right of one of them magnetic resistance groove.
Further, the cross section of described magnetic resistance groove is del, " U " type or semicircle.
Further, in each positioned magnetic pair, between adjacent two permanent magnets, the distance B in gap is 0.1 millimeter to 10 millimeters, and the width b of each magnetic resistance groove upper end open is identical with the distance B in gap.
Further, the degree of depth h of described magnetic resistance groove is at least 0.1 millimeter.
Further, the height H that described each permanent magnets protrudes from described kinematic axis surface is at least 0.1 millimeter.
The beneficial effects of the utility model are:
1. can be played pulling force or the thrust of the axial motion of kicking motion axle by the damping structure of the design, progressively slow down the axial motion frequency of kinematic axis, finally make it stable effect.
2. the design is compared with existing damping structure, its reasonable in design, stable, and long service life, is easy to realize.
Accompanying drawing explanation
Fig. 1 is the N ' pole of magnet S pole towards the magnetic line of force and sensor magnet that lure magnet;
Fig. 2 is the S ' pole of magnet N pole towards the magnetic line of force and sensor magnet that lure magnet;
Fig. 3 is fixed with inverted two magnetic patch of magnetic pole in the induction magnetic pole N ' pole lured on magnet and S ' pole;
Fig. 4 is that the utility model principle illustrates partial structurtes schematic diagram;
Fig. 5 is that axis of the present utility model analyses and observe rear primary structure schematic diagram;
Fig. 6 is the utility model assembled state primary structure schematic diagram;
Fig. 7 is the cross section of magnetic resistance groove in the utility model is del structural representation;
Fig. 8 is the cross section of magnetic resistance groove in the utility model is U-type groove structural representation schematic diagram;
Fig. 9 is the two magnetic patch position setting principle schematic diagrames that in the utility model, magnetic pole is contrary;
Positioned magnetic pair in Figure 10 the utility model adopts three permanent magnets setting principle schematic diagrames;
The secondary setting principle schematic diagram of employing in Figure 11 the utility model two positioned magnetics;
In figure:
A, A1, A2, A4, A5, A6, A ', A ". magnetic resistance groove;
1,2,5,6,8. permanent magnets; 3. kinematic axis; 4. lure magnet; 7. magnetic induction line.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated:
Embodiment 1: the axial damping structure of a kind of permanent magnet induction magnetic force, see Fig. 3 to Figure 10; It comprises one can the kinematic axis 3 of axial motion; This kinematic axis can do axial motion under the effect of inner F, and it also comprises and is arranged at described kinematic axis 3 lateral wall circumference, and axially arrange along described kinematic axis 3 lure magnet 4, described kinematic axis 3 is also provided with positioned magnetic pair; Described positioned magnetic secondary it comprise and be arranged at described kinematic axis 3 surface, and along at least two permanent magnets 1,2 that the axial direction of kinematic axis 3 be arranged in parallel; The surface of kinematic axis 3 is given prominence in the end of described permanent magnets 1,2, and the magnetic pole protruding from adjacent two permanent magnets 1,2 end on kinematic axis 3 surface is contrary, can see Fig. 4, Fig. 5, Fig. 9, Figure 10, in figure, the magnetic pole of adjacent two permanent magnets 1,2 end is contrary, and have the gap that a distance is B between adjacent two permanent magnets 1,2, and projecting permanent magnets 1,2 and the described magnet 4 that lures are arranged in opposite directions;
Further, the design also has at least one magnetic resistance groove A, A1, A2, A4, A5, A6, A described luring on magnet 4 along the axial direction spaced set of kinematic axis ', A ", and the quantity not just one in order to obtain its magnetic resistance groove of better effect; Can see Fig. 8, Fig. 9, the axial width b of described magnetic resistance groove equals the distance B in described gap, and the gap between adjacent two permanent magnets is positioned at directly over one of them magnetic resistance groove, and the gap between adjacent two permanent magnets and the magnetic resistance groove below this gap just right.Meanwhile, in order to implement convenient and obtain more excellent effect, the width of described each permanent magnets is identical, and gap between adjacent two magnetic resistance grooves is identical with the width of described permanent magnets.
Further, the cross section of the above magnetic resistance groove is del, " U " type or semicircle, and the degree of depth h of magnetic resistance groove is at least 0.1 millimeter, and preferably the degree of depth h of magnetic resistance groove is 0.1 millimeter, 0.5 millimeter, 1.0 millimeters or 2.5 millimeters; Meanwhile, the height H that described each permanent magnets protrudes from described kinematic axis surface is at least 0.1 millimeter, and preferably permanent magnets protrudes from the height H on described kinematic axis surface is 0.1 millimeter, 0.5 millimeter, 1.0 millimeters or 2.5 millimeters.
By the design of said structure, the present embodiment can play pulling force or the thrust of the axial motion of kicking motion axle, progressively slows down the axial motion frequency of kinematic axis, finally makes it stable; The principle of the design is explained and is described as follows:
The key of the design is luring the magnetic resistance groove that the surface of magnet 4 is offered; If when there is no magnetic resistance groove, can see Fig. 3, the S pole of permanent magnets (also claiming magnet piece), towards luring magnet 4, under the induction of its permanent magnets S pole field, induces N ' pole (N pole) magnetic field luring on magnet 4.And the N pole of permanent magnets is also towards luring magnet, under the induction of its permanent magnets N pole field, induce S ' pole (S pole) magnetic field luring on magnet, luring N ' (N pole) pole field that magnet is induced and S ' (S pole) pole field mutually to superpose counteracting, affect permanent magnets to the attraction luring magnet, can see Fig. 3, fixing at least two permanent magnets on a kinematic axis, permanent magnets is made to stretch out the surface of fixing kinematic axis, be parallel to each other between two kinematic axiss, and keep certain gap b, the magnetic pole that two permanent magnets stretch out kinematic axis part is contrary, when being fixed with the kinematic axis of permanent magnets in time luring magnet 4, the magnetic pole of permanent magnets end all can produce induced magnetism to luring magnet 4, and by magnetic induction line with lure magnet to link together, but due to the effect luring N ' (N pole) pole field that magnet is induced and S ' (S pole) pole field mutually to superpose counteracting, permanent magnets and lure the position of magnet contact to be random, uncertain.
And when when luring the surface of magnet 4 to offer magnetic resistance groove A, S pole, towards the permanent magnets 1 luring magnet 4, under the induction of its S pole field, induces N ' pole field luring on magnet; N pole, towards the permanent magnets 2 luring magnet 4, under the induction of its N pole field, induces S ' pole field luring on magnet; And due to the existence of magnetic resistance groove A, cut off N ' pole field towards the magnetic line of force at S ' pole field, N ' the pole field magnetic line of force concentrates on the S pole of permanent magnets 1, and towards lure magnet and permanent magnets 1 just to position, the S pole of such permanent magnets with lure the induction magnetic pole N ' of magnet to form a pair gravitational electric, attract each other; A mutual repulsive force is had at the N of the permanent magnets 2 luring the induced field N ' pole of magnet being responded to generation and another magnetic pole to put upside down.Similarly, the N pole of permanent magnets 2 is towards luring magnet 4, under the induction of its N pole field, induce S ' pole field luring on magnet, due to the existence of magnetic resistance groove, cut off the magnetic line of force of S ' pole field towards N ' pole field, S ' the pole field magnetic line of force concentrates on the N of permanent magnets 2 extremely just to position, such permanent magnets 2 N pole with lure the induction magnetic pole S ' of magnet to form a pair gravitational electric, attract each other; And have a mutual repulsive force at the S of the permanent magnets 1 luring the induced field S ' pole of magnet 4 being responded to generation and another magnetic pole to put upside down.Under the acting in conjunction of above-mentioned induced field attraction and repulsive force each other, the kinematic axis being fixed with permanent magnets is always kept towards the trend of fixed position, or remains on fixed position; And by kinematic axis, two or more than two permanent magnets minimum is discharged side by side, retain certain interval each other, and the magnet that the magnetic pole of adjacent permanent magnet block is contrary, offer the magnetic resistance groove corresponding with gap luring on magnet, because magnetic resistance groove is to the blocking effect of the magnetic line of force, make permanent magnets only align the right magnet that lures and produce stronger magnetic force, the mechanism thus with this magnetic block combination has the trend always kept towards fixed position, or remains on fixed position.
Axially moved under the effect of power F by the kinematic axis in above-mentioned design the design, and progressively can be slowed down the axial motion frequency of kinematic axis by the axial damping structure of the permanent magnet induction magnetic force of above-mentioned design, finally make it stable.
In actual applications, can see Fig. 5, Fig. 6, the kinematic axis of the design can be cylinder or rectangular structure, and described in lure magnet 4 to be the tubular structure of its at least one end opening, and kinematic axis be positioned at tubular structure lure magnet inner.
Embodiment 2, can see Fig. 5, Fig. 6, Figure 11, repeat no more with embodiment 1 something in common, difference is: the positioned magnetic pair be arranged on described kinematic axis is at least two, and the secondary axis along described kinematic axis of multiple positioned magnetic be arranged in parallel, and the gap in same positioned magnetic pair between adjacent two permanent magnets is positioned at the top of one of them magnetic resistance groove equally, and the gap in same positioned magnetic pair between adjacent two permanent magnets and the magnetic resistance groove below this gap just right.Further, in each positioned magnetic pair, between adjacent two permanent magnets, the distance B in gap is 0.1 millimeter to 10 millimeters, and the width b of each magnetic resistance groove upper end open is identical with the distance B in gap.Certainly, the distance between its adjacent two positioned magnetic pairs also can be random, and in order to obtain more excellent effect, the distance preferably between adjacent two positioned magnetic pairs equals the axial width b of described magnetic resistance groove.
Further, can see Fig. 5, Fig. 6, the multiple positioned magnetic pairs be positioned on same axis form the secondary group of a positioned magnetic, and the multiple magnetic resistance grooves be positioned on this same axis below multiple positioned magnetic pair form a location magnetic resistance groove group; The positioned magnetic pair group be arranged on described kinematic axis is at least two groups, and is symmetricly set in the surface of described kinematic axis; With described positioned magnetic pair organize arrange in opposite directions lure the inwall of magnet is provided with and organize just right location magnetic resistance groove group with this positioned magnetic pair, and the gap in same positioned magnetic pair group between adjacent two permanent magnets is positioned at the just right of one of them magnetic resistance groove.
What embodiment of the present utility model was announced is preferred embodiment; but be not limited thereto; those of ordinary skill in the art; very easily according to above-described embodiment; understand spirit of the present utility model; and make different amplifications and change, but only otherwise depart from spirit of the present utility model, all in protection range of the present utility model.
Claims (10)
1. the axial damping structure of permanent magnet induction magnetic force, comprising one can the kinematic axis of axial motion; It is characterized in that: it also comprises and is arranged at described kinematic axis lateral wall circumference, and axially arrange along described kinematic axis lure magnet, described kinematic axis is also provided with positioned magnetic pair; Described positioned magnetic pair comprises and is arranged at described kinematic axis surface, and along at least two permanent magnets that the axial direction of kinematic axis be arranged in parallel; The surface of kinematic axis is given prominence in the end of described permanent magnets, and the magnetic pole protruding from adjacent two permanent magnets ends on kinematic axis surface is contrary, and have the gap that a distance is B between adjacent two permanent magnets, and projecting permanent magnets and the described magnet that lures are arranged in opposite directions;
And have at least one magnetic resistance groove described luring on magnet along the axial direction spaced set of kinematic axis, the axial width b of described magnetic resistance groove equals the distance B in described gap, and the gap between adjacent two permanent magnets is positioned at directly over one of them magnetic resistance groove, and the gap between adjacent two permanent magnets and the magnetic resistance groove below this gap just right.
2. the axial damping structure of permanent magnet induction magnetic force as claimed in claim 1, is characterized in that: the width of described each permanent magnets is identical, and gap between adjacent two magnetic resistance grooves is identical with the width of described permanent magnets.
3. the axial damping structure of permanent magnet induction magnetic force as claimed in claim 2, it is characterized in that: described kinematic axis is cylinder or rectangular structure, the described magnet that lures is the tubular structure of its at least one end opening, and described kinematic axis can axially move luring in magnet of described tubular structure.
4. the axial damping structure of permanent magnet induction magnetic force as claimed in claim 1 or 2, it is characterized in that: the positioned magnetic pair be arranged on described kinematic axis is at least two, and the secondary axis along described kinematic axis of multiple positioned magnetic be arranged in parallel, and the gap in same positioned magnetic pair between adjacent two permanent magnets is positioned at the top of one of them magnetic resistance groove, and the gap in same positioned magnetic pair between adjacent two permanent magnets and the magnetic resistance groove below this gap just right.
5. the axial damping structure of permanent magnet induction magnetic force as claimed in claim 4, is characterized in that: the distance between adjacent two positioned magnetic pairs equals the axial width b of described magnetic resistance groove.
6. the axial damping structure of permanent magnet induction magnetic force as claimed in claim 4, it is characterized in that: the multiple positioned magnetic pairs be positioned on same axis form the secondary group of a positioned magnetic, and the multiple magnetic resistance grooves be positioned on this same axis below multiple positioned magnetic pair form a location magnetic resistance groove group; The positioned magnetic pair group be arranged on described kinematic axis is at least two groups, and is symmetricly set in the surface of described kinematic axis; With described positioned magnetic pair organize arrange in opposite directions lure the inwall of magnet is provided with and organize just right location magnetic resistance groove group with this positioned magnetic pair, and the gap in same positioned magnetic pair group between adjacent two permanent magnets is positioned at the just right of one of them magnetic resistance groove.
7. the axial damping structure of permanent magnet induction magnetic force as claimed in claim 4, is characterized in that: the cross section of described magnetic resistance groove is del, " U " type or semicircle.
8. the axial damping structure of permanent magnet induction magnetic force as claimed in claim 4, it is characterized in that: in each positioned magnetic pair, between adjacent two permanent magnets, the distance B in gap is 0.1 millimeter to 10 millimeters, and the width b of each magnetic resistance groove upper end open is identical with the distance B in gap.
9. the axial damping structure of permanent magnet induction magnetic force as claimed in claim 4, is characterized in that: the degree of depth h of described magnetic resistance groove is at least 0.1 millimeter.
10. the axial damping structure of permanent magnet induction magnetic force as claimed in claim 4, is characterized in that: the height H that described each permanent magnets protrudes from described kinematic axis surface is at least 0.1 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520863022.0U CN205070850U (en) | 2015-11-02 | 2015-11-02 | Permanent magnetism induced magnetism mechanical axis is to damping structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520863022.0U CN205070850U (en) | 2015-11-02 | 2015-11-02 | Permanent magnetism induced magnetism mechanical axis is to damping structure |
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| CN205070850U true CN205070850U (en) | 2016-03-02 |
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| CN201520863022.0U Active CN205070850U (en) | 2015-11-02 | 2015-11-02 | Permanent magnetism induced magnetism mechanical axis is to damping structure |
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Effective date of registration: 20170302 Address after: 102600 Daxing District, Beijing Huang Village street, No. 5 Patentee after: Beijing Jingye bearing Limited by Share Ltd Address before: 100031 Beijing city Xicheng District Chengen Hutong No. 5 Patentee before: Luo Hong Patentee before: Zhang Ping |