CN203918652U - A kind of finger-like electromagnet structure - Google Patents
A kind of finger-like electromagnet structure Download PDFInfo
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- CN203918652U CN203918652U CN201420159276.XU CN201420159276U CN203918652U CN 203918652 U CN203918652 U CN 203918652U CN 201420159276 U CN201420159276 U CN 201420159276U CN 203918652 U CN203918652 U CN 203918652U
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- finger
- magnetic field
- magnetic pole
- magnetic
- low groove
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- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The utility model embodiment discloses a kind of finger-like electromagnet structure, comprise: left magnetic pole and right magnetic pole, described left magnetic pole is provided with the first finger, and described right magnetic pole is provided with the second finger, and described the first finger and described the second finger can clamp mutually; The finger length of described the first finger and the second finger is 16～26m, and described the first finger and described the second finger are provided with square low groove.The disclosed a kind of finger-like electromagnet structure of the utility model embodiment, can form magnetic field, face territory, and magnetic field intensity is high, and magnetic field intensity is even, meets the processing of large area optical element.
Description
Technical field
The utility model relates to the high-accuracy manufacture field of optical element, relates in particular to a kind of finger-like electromagnet structure.
Background technology
Optical element is widely used in engineering field, no matter from production efficiency aspect or aspect the stability of machining accuracy and crudy, traditional optics processing method is all difficult to meet machining accuracy that optical element is proposed and the requirement of surface quality, therefore studies a kind ofly to have high efficiency and high-precision optical element processing method has important practical significance.
MRF is as a kind of novel optical element processing method, it is by gradient magnetic, the rheological property of the magnetic rheological liquid between polishing disk and surface of the work to be changed, the region contacting with magnetic flow liquid at surface of the work produces larger shearing force, thereby surface of the work material is removed.The shortcoming such as little for traditional MRF region, magnetic field intensity is inhomogeneous, the existing micro-bistrique plane polishing of the cluster magnetic rheology effect process technology that develops, is about to the micro-bistrique cluster of magnetic rheology effect and is combined to form flat tool for the new process of ultra-smooth plane polishing processing.Cluster Technique of Magnetorheological Finishing has the advantages such as magnetic field intensity is even, abrasive material is evenly distributed, polishing area is larger, can realize high-efficiency high-precision polishing processing object.
Distribution of Magnetic Field plays vital effect to cluster MRF effect, the magnetic field of current cluster magnetic rheology effect plane polishing device is to be produced by several permanent magnets, although this magnetic field generator structure is comparatively simple and can produce magnetic field in cold situation, the shortcoming such as the trunking mode of permanent magnet has that the less and easy decay of magnetic field intensity, magnetic field intensity are unadjustable, the magnetic field intensity in card is inhomogeneous.And adopt electromagnet can form in card adjustable, the more uniform magnetic field of intensity, comparatively conventional electromagnet is bar shaped clearance-type electromagnet at present, its structure is for comprising U-shaped iron core, U-shaped iron core is energized coil wrapping, U-shaped iron core two ends connect left magnetic pole and right magnetic pole, thereby form bar shaped gap at left magnetic pole and right magnetic pole place, although the magnetic field that this field structure utilizes gap leakage field to produce meets the requirement of Precision Machining to magnetic field, but the magnetic field producing between two magnetic poles is bar pattern magnetic field, cause field region too small, can not meet the processing of large area optical element.
Granted publication number discloses a kind of face of cylinder efficient grinding device based on the magnetorheological grinding effect of cluster for the Chinese patent of CN202162633U, its magnetic field that proposes the magnetorheological abrasive areas of cluster in claim provides by permanent magnet, but employing permanent magnet, though its structure is comparatively simple and can produce magnetic field in cold situation, but the shortcoming such as the trunking mode of permanent magnet has that the less and easy decay of magnetic field intensity, magnetic field intensity are unadjustable, the magnetic field intensity in card is inhomogeneous.
Publication number is that CN1470360A discloses a kind of certainty magnetic jet method for finishing processing and device, proposition utilizes magnetic flow liquid to carry out polishing of optical part, its electromagnet is for to be wound with a circle or the above copper coil of a circle in nonferromugnetic material surrounding, the magnetic field that this electromagnet structure produces is even not, is difficult to meet the processing of large area optical element.
Utility model content
The utility model embodiment technical problem to be solved is, a kind of finger-like electromagnet structure is provided, and can form magnetic field, face territory, and magnetic field intensity is high, and magnetic field intensity is even, meets the processing of large area optical element.
In order to solve the problems of the technologies described above, the utility model embodiment provides a kind of finger-like electromagnet structure, comprise: left magnetic pole and right magnetic pole, described left magnetic pole is provided with the first finger, described right magnetic pole is provided with the second finger, and described the first finger and described the second finger can clamp mutually; The finger length of described the first finger and the second finger is 16～26mm; Described the first finger and described the second finger are provided with square low groove.
Further, described square low groove gap is 1～2mm.
More optimize, described square low groove gap is 1mm.
Further, described the first finger arranges circular arc perpendicular to described left magnetic pole place, and described the second finger arranges circular arc perpendicular to described right magnetic pole place, and described square low groove gap location arranges circular arc.
Further, the described square low groove degree of depth is 2mm.
A kind of finger-like electromagnet structure that the utility model provides, by electromagnet being arranged to the finger of clamping mutually, can form a lot of bar shaped clearance-type field regions.Because this finger electromagnet comprises a lot of bar shaped clearance-types magnetic field, therefore the interval area of leakage field has just indirectly been increased, thereby formed magnetic field, face territory, increased magnetic field intensity, met the requirement of magnetorheological processing to field region, the finger of simultaneously optimizing finger is long, improved the intensity in magnetic field, by square low groove being set on finger and carrying out circular arc processing, magnetic field intensity is more tending towards evenly when increasing, met the Precision Machining of large area optical element.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of finger top view that the utility model provides;
Fig. 2 is A-A profile in Fig. 1.
The left magnetic pole of 1-; The right magnetic pole of 2-; 3-the first finger; 4-the second finger; The square low groove of 5-; 6-circular arc.
The specific embodiment
A kind of finger-like electromagnet structure that the utility model embodiment provides, can form magnetic field, face territory, and magnetic field intensity is high, and magnetic field intensity is even, meets the processing of large area optical element.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work, belongs to the scope that the utility model is protected.
Referring to Fig. 1, a kind of finger-like electromagnet structure top view providing for the utility model embodiment, this finger-like electromagnet structure as shown in Figure 2, comprise: left magnetic pole 1 and right magnetic pole 2, described left magnetic pole 1 is provided with the first finger 3, described right magnetic pole 2 is provided with the second finger 4, and described the first finger 3 can clamp mutually with described the second finger 4; Described the first finger 3 and described the second finger 4 clamp and form the structure of similar " finger " shape mutually, can form a lot of bar shaped clearance-type field regions.Because this finger magnetic pole comprises a lot of bar shaped clearance-types magnetic field, so the interval area of leakage field just indirectly increased, thereby formed magnetic field, face territory, and the design of this field structure meets the requirement of magnetorheological processing to field region more.The magnetic field intensity at the different long magnetic fingertip end places producing of finger is also different, described the first finger 3 and the second finger 4 are optimized, the finger length of described the first finger 3 and the second finger 4 is 16～26mm, when referring to length for 16-26mm scope, along with referring to long growth, most advanced and sophisticated magnetic field intensity increases, and it is former because when referring to that long length is large more than gap, and the point effect that the magnetic line of force forms at place, tip is stronger.For the region that produces magnetic field is increased, under the requirement that meets magnetic field intensity, to the finger of described the first finger 3 and the second finger 4 is long, further to optimize, the finger length of described the first finger 3 and the second finger 4 is 26mm.
Described the first finger 3 is provided with square low groove 5 with described the second finger 4, can greatly reduce the magnetic resistance of permeability magnetic material, and magnetic field intensity greatly strengthens.
Further optimize, described square low groove 5 gaps are 1～2mm, groove gap is less, the magnetic field intensity of each characteristic curve of magnetic pole surfaces is larger, and it is former because groove gap is less, and the magnetic loop forming between two magnetic poles is stronger, and the air reluctance that the magnetic line of force passes is also less, magnetic field intensity is larger, more optimizes, and described square low groove 5 gaps are 1mm.
Further, described the first finger 3 arranges circular arc 6 perpendicular to described left magnetic pole 1 place, described the second finger 4 arranges circular arc 6 perpendicular to described right magnetic pole 2 places, described square low groove 5 gap locations arrange circular arc 6, by circular arc, process, magnetic pole will reduce point effect, reduces leakage field, the magnetic line of force that imports to machining area will increase accordingly, and magnetic field intensity will increase.
The different square low groove degree of depth will affect the uniformity of cluster dot matrix Surface field intensity.In order to make cluster dot matrix surface obtain uniform magnetic field intensity, can by adjusting the square low groove degree of depth, improve the uniformity in magnetic field, the described square low groove degree of depth is 2mm, and the degree of depth is less, and the magnetic field intensity of each characteristic curve of magnetic pole surfaces is more even; When the degree of depth is 2mm, magnetic field intensity is more or less the same, and refers to long tip and refers to that the magnetic induction intensity in the middle of length is substantially even.It is because square low groove is darker, and the cross section of conducting the magnetic line of force is less, passes to and refers to that the long middle magnetic line of force is fewer, and owing to referring to that length has point effect, refer to that the long most advanced and sophisticated magnetic line of force is relatively many, so refer to that long tip and middle magnetic field intensity differ greatly; On the contrary, the degree of depth is less, and magnetic fingertip end and middle magnetic field intensity differ less.
Known by foregoing description, the utility model provides a kind of finger-like electromagnet structure, by electromagnet being arranged to the finger of clamping mutually, can form a lot of bar shaped clearance-type field regions.Because this finger electromagnet comprises a lot of bar shaped clearance-types magnetic field, therefore the interval area of leakage field has just indirectly been increased, thereby formed magnetic field, face territory, increased magnetic field intensity, met the requirement of magnetorheological processing to field region, the finger of simultaneously optimizing finger is long, improved the intensity in magnetic field, by square low groove being set on finger and carrying out circular arc processing, magnetic field intensity is more tending towards evenly when increasing, met the Precision Machining of large area optical element.
Above content is in conjunction with concrete preferred embodiment further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (5)
1. a finger-like electromagnet structure, comprises left magnetic pole and right magnetic pole, it is characterized in that, described left magnetic pole is provided with the first finger, and described right magnetic pole is provided with the second finger, and described the first finger and described the second finger can clamp mutually; The finger length of described the first finger and the second finger is 16～26mm; Described the first finger and described the second finger are provided with square low groove.
2. a kind of finger-like electromagnet structure as claimed in claim 1, is characterized in that, described square low groove gap is 1～2mm.
3. a kind of finger-like electromagnet structure as claimed in claim 2, is characterized in that, described square low groove gap is 1mm.
4. a kind of finger-like electromagnet structure as claimed in claim 3, it is characterized in that, described the first finger arranges circular arc perpendicular to described left magnetic pole place, and described the second finger arranges circular arc perpendicular to described right magnetic pole place, and described square low groove gap location arranges circular arc.
5. a kind of finger-like electromagnet structure as described in claim 2 to 4 any one, is characterized in that, the described square low groove degree of depth is 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420159276.XU CN203918652U (en) | 2014-03-31 | 2014-03-31 | A kind of finger-like electromagnet structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420159276.XU CN203918652U (en) | 2014-03-31 | 2014-03-31 | A kind of finger-like electromagnet structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203918652U true CN203918652U (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420159276.XU Expired - Fee Related CN203918652U (en) | 2014-03-31 | 2014-03-31 | A kind of finger-like electromagnet structure |
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| CN (1) | CN203918652U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107424720A (en) * | 2017-08-08 | 2017-12-01 | 北京交通大学 | Electric control permanent magnet formula field generator for magnetic for magnetorheological plane polishing |
| CN107481832A (en) * | 2017-08-04 | 2017-12-15 | 北京交通大学 | Electric control permanent magnet formula field generator for magnetic for magnetorheological plane polishing |
-
2014
- 2014-03-31 CN CN201420159276.XU patent/CN203918652U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107481832A (en) * | 2017-08-04 | 2017-12-15 | 北京交通大学 | Electric control permanent magnet formula field generator for magnetic for magnetorheological plane polishing |
| CN107481832B (en) * | 2017-08-04 | 2023-07-25 | 北京交通大学 | Electric control permanent magnet type magnetic field generating device for magnetorheological plane polishing |
| CN107424720A (en) * | 2017-08-08 | 2017-12-01 | 北京交通大学 | Electric control permanent magnet formula field generator for magnetic for magnetorheological plane polishing |
| CN107424720B (en) * | 2017-08-08 | 2023-08-22 | 江西德义半导体科技有限公司 | Electric control permanent magnet type magnetic field generating device for magnetorheological plane polishing |
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| DD01 | Delivery of document by public notice |
Addressee: Tong Heping Document name: Notification of Acceptance of Patent Application |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20150331 |
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| EXPY | Termination of patent right or utility model |