CN212420406U - Active magnetic suspension rail bracket - Google Patents

Abstract

The utility model discloses an active magnetic suspension guide rail bracket. The upper wall of the sliding box is symmetrically provided with a first bracket and a second bracket. The first bracket is used for installing a first normal support electromagnet, and the second bracket is used for installing a first bracket. Two normal support electromagnets, the lower wall of the sliding box is symmetrically provided with a third bracket and a fourth bracket, the third bracket is used to install the third normal support electromagnet, and the fourth bracket is used to install the fourth bracket The normal support electromagnet, the left side wall of the sliding box is provided with a fifth bracket, the fifth bracket is used to install the first guide electromagnet and the second guide electromagnet, the right side wall of the sliding box is provided with The sixth bracket is used for installing the third guide electromagnet and the fourth guide electromagnet. The active magnetic suspension guide rail bracket makes the theoretical plane of the four constraint points of the normal support electromagnet installed on the bracket sufficiently close to the actual plane, not only the flutter is solved, but also the bearing capacity can be improved.

Description

Active magnetic suspension guide rail bracket

Technical Field

The utility model relates to a technical field of initiative magnetic suspension, concretely relates to initiative magnetic suspension rail brackets.

Background

As is known, machine tool guides are a fundamental structural element of machine tools. The machining accuracy, machining efficiency and service life of the machine tool depend to a large extent on the quality of the machine tool guide rails. With the continuous progress of the technology, higher requirements are put forward on a guide rail of a high-grade numerical control machine tool, and the guide rail does not vibrate during high-speed feeding and does not creep during low-speed feeding; the device has higher response speed and can continuously work for a long time under heavy load; high wear resistance, good precision retentivity and the like. For most of the existing machine tool guide rails, the problems of heavy load and high-speed abrasion inevitably exist, a certain friction coefficient exists, and the feeding speed cannot be developed to the maximum.

The existing active magnetic suspension guide rail is difficult to be a practical machine tool guide rail because when the load is close to the supporting point with small rigidity, instability is easily caused. When the length of the machine tool guide rail is increased, the number of the constraint points is far more than 3, and plane normal constraint cannot be realized by the method of combining the main constraint and the auxiliary constraint.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is to provide an initiative magnetic suspension guide rail bracket solves one or more among the above-mentioned prior art problem.

According to the utility model discloses an initiative magnetic suspension guide rail support locates the slip box, and slip box upper wall symmetry is equipped with first support and second support, first support is used for installing first normal direction supporting electro-magnet, the second support is used for installing second normal direction supporting electro-magnet, slip box lower wall symmetry is equipped with third support and fourth support, the third support is used for installing third normal direction supporting electro-magnet, the fourth support is used for installing fourth normal direction supporting electro-magnet, slip box left side wall is equipped with the fifth support, the fifth support is used for the installation first direction electro-magnet and second direction electro-magnet, slip box right side wall is equipped with the sixth support, the sixth support is used for the installation third direction electro-magnet and fourth direction electro-magnet.

In some embodiments, the first, second, third and fourth stents are "U" -shaped stents and the fifth and sixth stents are "I" -shaped stents.

In some embodiments, the fifth support comprises a first vertical rod, a first cross rod and a second vertical rod, the first cross rod is vertically arranged on the first vertical rod and the second vertical rod respectively, the first vertical rod is fixed on the left side wall of the sliding box, the first guiding electromagnet is fixed above the first cross rod, and the second guiding electromagnet is fixed below the first cross rod; the sixth support comprises a third vertical rod, a second transverse rod and a fourth vertical rod, the second transverse rod is respectively vertically arranged on the third vertical rod and the fourth vertical rod, the third vertical rod is fixed on the right side wall of the sliding box, the third guiding electromagnet is fixed above the second transverse rod, and the fourth guiding electromagnet is fixed below the second transverse rod.

Has the advantages that: the utility model discloses an initiative magnetic suspension guide rail support for when installing 4 about point theoretical planes of normal direction supporting electro-magnet on the support and fully being close real plane surface, not only shimmy obtains solving, and the bearing capacity can obtain promoting moreover.

Drawings

Fig. 1 is a schematic structural diagram of an active magnetic suspension guide rail platform according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an active magnetic suspension guide rail platform according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an active magnetic suspension guide rail bracket according to an embodiment of the present invention.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1 and 2:

the active magnetic suspension guide rail platform comprises a base 10, a guide plate 20 arranged on the base 10, a slide box 30 sleeved on the guide plate 20 and a controller 60 arranged on the base 10, wherein the upper wall of the slide box 30 is provided with a linear motor 40, a first normal supporting electromagnet 31 and a second normal supporting electromagnet 32, the left side wall of the slide box 30 is provided with a first guiding electromagnet 35 and a second guiding electromagnet 36, the right side wall of the slide box 30 is provided with a third guiding electromagnet 37 and a fourth guiding electromagnet 38, the lower wall of the slide box 30 is provided with a third normal supporting electromagnet 33 and a fourth normal supporting electromagnet 34, the third normal supporting electromagnet 33 is provided with a first displacement sensor 51, the fourth normal supporting electromagnet 34 is provided with a second displacement sensor 52, and the first displacement sensor 51 is used for detecting the gap between the guide plate 20 and the third normal supporting electromagnet 33, the second displacement sensor 52 is used for detecting a gap between the guide plate 20 and the fourth normal support electromagnet 34, and the controller 60 is electrically connected to the first displacement sensor 51, the second displacement sensor 52, the first normal support electromagnet 31, the second normal support electromagnet 32, the third normal support electromagnet 33, and the fourth normal support electromagnet 34, respectively.

Among them, the first normal supporting electromagnet 31, the second normal supporting electromagnet 32, the third normal supporting electromagnet 33, and the fourth normal supporting electromagnet 34 serve as normal supports, the first guide electromagnet 35, the second guide electromagnet 36, the third guide electromagnet 37, and the fourth guide electromagnet 38 serve as guide supports, and coils are wound on the poles, so that when current flows through the coils, electromagnetic attraction is generated, thereby suspending the slide case and bearing a certain load.

The electromagnet parameters of the first normal support electromagnet 31, the second normal support electromagnet 32, the third normal support electromagnet 33 and the fourth normal support electromagnet 34 are selected from the following parameters:

the width a of the electromagnet is 20mm, the length b is 45mm, and the magnetic pole area is as follows: aa is 0.0009m²The bearing capacity of each pair of electromagnets is as follows: f₀385.2N; bias current I₀1.0A, 120 total turns N, 3A/m current density²Using double coils, each coil using double parallel winding, N ₁60 turns, 5 layers are wound, and each layer has 12 turns.

The electromagnet parameters of the first guiding electromagnet 35, the second guiding electromagnet 36, the third guiding electromagnet 37 and the fourth guiding electromagnet 38 are selected as follows:

the width a of the electromagnet is 10mm, the length b is 40mm, and the magnetic pole area is as follows: aa ═ 0.0004m²The bearing capacity of each pair of electromagnets is as follows: f₀171.3N; bias current I₀1.0A, and 120 turns N.

Further, the controller 60 is a single chip microcomputer.

Further, a first amplifier 61 is provided between the controller 60 and the first normal support electromagnet 31 and the third normal support electromagnet 33, and a second amplifier 62 is provided between the controller 60 and the second normal support electromagnet 32 and the fourth electromagnet 34.

As shown in figure 3 of the drawings,

the upper wall of the slide box 30 is symmetrically provided with a first bracket 71 and a second bracket 72, the first bracket 71 is used for installing a first normal supporting electromagnet 31, the second bracket 72 is used for installing a second normal supporting electromagnet 32, the lower wall of the slide box 30 is symmetrically provided with a third bracket 73 and a fourth bracket 74, the third bracket 73 is used for installing a third normal supporting electromagnet 33, the fourth bracket 74 is used for installing a fourth normal supporting electromagnet 34, the left side wall of the slide box 30 is provided with a fifth bracket 75, the fifth bracket 75 is used for installing the first guiding electromagnet 35 and the second guiding electromagnet 36, the right side wall of the slide box 30 is provided with a sixth bracket 76, and the sixth bracket 76 is used for installing the third guiding electromagnet 37 and the fourth guiding electromagnet 38.

Furthermore, first stent 71, second stent 72, third stent 73 and fourth stent 74 are all "U" -shaped stents, and fifth stent 75 and sixth stent 76 are all "I" -shaped stents.

Further, the fifth support 75 includes a first vertical rod, a first cross rod and a second vertical rod, the first cross rod is vertically disposed on the first vertical rod and the second vertical rod, the first vertical rod is fixed on the left side wall of the sliding box 30, the first guiding electromagnet 35 is fixed above the first cross rod, and the second guiding electromagnet 36 is fixed below the first cross rod; the sixth support 76 includes a third vertical rod, a second horizontal rod and a fourth vertical rod, the second horizontal rod is respectively perpendicular to the third vertical rod and the fourth vertical rod, the third vertical rod is fixed to the right side wall of the slide box 30, the third guiding electromagnet 37 is fixed to the upper side of the second horizontal rod, and the fourth guiding electromagnet 38 is fixed to the lower side of the second horizontal rod.

The control method of the active magnetic suspension guide rail platform comprises the following steps:

s1, detecting the change of the gap between the guide plate and the third normal direction supporting electromagnet and the fourth normal direction supporting electromagnet by the probe of the displacement sensor, and converting the physical signal into an electric signal;

s2, transmitting the electric signals to a controller through a conditioning circuit, carrying out related operation on the detected displacement signals by the controller according to an applied dominant control strategy, and then outputting corresponding control electric signals;

and S3, amplifying the signals by a power amplifier, transmitting the amplified signals to the third normal supporting electromagnet and the fourth normal supporting electromagnet, and adjusting the current in the electromagnet coil to change the electromagnetic force generated in the electromagnet coil so as to keep the guide rail system in a balanced state.

Further, the equilibrium state in step S3 is such that the electromagnetic forces of the third normal supporting electromagnet and the fourth normal supporting electromagnet suspend the slide case while maintaining the suspension gap of 0.2 mm.

The utility model discloses support of initiative magnetic suspension guide rail platform design for when installing 4 about a little theoretical planes of normal direction supporting electromagnet on the support and fully being close real plane, not only shimmy obtains solving, and the bearing capacity can obtain promoting moreover.

And the control method enables the linear motor to drive the slide box to make friction-free precise controlled movement along the guide plate. The guide rail platform supports the guide rail load by magnetic suspension, has good precision retentivity, no friction, no abrasion of the guide rail, great feeding response speed and other excellent performances. And the magnetic suspension guide rail has the characteristics of no mechanical friction, no need of lubricating oil and the like, and can greatly improve the working condition and protect the natural ecological environment.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, similar modifications and improvements can be made without departing from the inventive concept, and these should also be considered as within the protection scope of the present invention.

Claims (3)

1. Active magnetic levitation guide rail bracket, located in the sliding box (30), characterized in that the upper wall of the sliding box (30) is symmetrically provided with a first bracket (71) and a second bracket (72), the first bracket (72) (71) is used to install the first normal support electromagnet (31), the second bracket (72) is used to install the second normal support electromagnet (32), and the lower wall of the sliding box (30) is symmetrically arranged There are a third bracket (73) and a fourth bracket (74), the third bracket (73) is used for installing the third normal support electromagnet (33), and the fourth bracket (74) is used for installing the fourth bracket (74) The normal support electromagnet (34), the left side wall of the sliding box (30) is provided with a fifth bracket (75), the fifth bracket (75) is used for installing the first guide electromagnet (35) and the second guide electromagnet (35) A guide electromagnet (36), a sixth bracket (76) is provided on the right side wall of the sliding box (30), and the sixth bracket (76) is used for installing the third guide electromagnet (37) and the fourth guide electromagnet Iron (38). 2. The active magnetic suspension rail bracket according to claim 1, wherein the first bracket (71), the second bracket (72), the third bracket (73) and the fourth bracket (74) are all " The fifth bracket (75) and the sixth bracket (76) are both "I"-shaped brackets. 3. The active magnetic levitation rail bracket according to claim 2, wherein the fifth bracket (75) comprises a first vertical rod, a first horizontal rod and a second vertical rod, and the first horizontal rod is located at The first vertical rod and the second vertical rod are vertically arranged, the first vertical rod is fixed on the left side wall of the sliding box (30), and the first guide electromagnet (35) is fixed on the first vertical rod Above the horizontal bar, the second guide electromagnet (36) is fixed below the first horizontal bar; the sixth bracket (76) includes a third vertical bar, a second horizontal bar and a fourth vertical bar, The second horizontal bar is vertically arranged on the third vertical bar and the fourth vertical bar, the third vertical bar is fixed on the right side wall of the sliding box (30), and the third guide electromagnet ( 37) is fixed above the second horizontal bar, and the fourth guide electromagnet (38) is fixed below the second horizontal bar.

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