CN100577365C - Electric permanent-magnet device - Google Patents
Electric permanent-magnet device Download PDFInfo
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- CN100577365C CN100577365C CN200680014066A CN200680014066A CN100577365C CN 100577365 C CN100577365 C CN 100577365C CN 200680014066 A CN200680014066 A CN 200680014066A CN 200680014066 A CN200680014066 A CN 200680014066A CN 100577365 C CN100577365 C CN 100577365C
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- working face
- permanent magnetism
- electric
- slit
- magnetic pole
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Abstract
An electro permanent magnetic apparatus with monolithic working face for holding work pieces magnetically and/or mechanically comprising of a base plate (2) and ferrous monolithic working face (1), the said base plate having a pocket, or recess which houses the reversible magnets (6) and electrical windings (3), the said working face having magnetic poles (4) which are demarked by slots (7) and on the opposite side of the said working face (1), recesses are provided beneath the said slots (7) for housing the non- reversible permanent magnets (5).
Description
Technical field
The present invention relates to magnetically a kind of and/or mechanically keep the electric permanent magnetism work holding apparatus of workpiece.More specifically, the present invention relates to a kind of electric permanent magnetism (for the purpose of succinct and convenience, in specification, hereinafter abbreviate EPM as) work holding apparatus, the working face that this electricity permanent magnetism work holding apparatus has the monolithic iron content, this working face have magnetic pole separately, be the slit of desirable shape and structure, thereby make that this equipment is suitable for magnetically and/or mechanically keeping workpiece in the process of work/machining/fixing.Usually these slits are made around the circumference of magnetic pole, thus make working face effective magnetic area reduce minimize.The present invention also relates to a kind of have at least one the irreversible permanent magnet and the work holding apparatus of another reversible permanent magnet of suitably placing at least, it can be used for parts by the switching on the electric power and keep, and workpiece material is maintained at the appropriate location under the situation of not using other magnetic pole separator by this.
Background technology
In the metalworking machine device of for example CNC machining center (CNC machining center), milling machine, electrical discharge machine (EDM), grinding machine etc., magnetic work keeps equipment through being commonly used for workbench, want processed workpiece to be firmly held on the workbench by this, can on workpiece, carry out process operation then by magnetic force.
The key property of magnet is the ability that flows its attraction ferrimagnet that forms owing to the magnetic energy of being called as between the magnetic pole of north and south " magnetic flux (flux) ".When ferromagnetic workpiece was placed between the magnetic pole of magnet, " magnetic flux " passed through, and workpiece is attracted thus.Attract or the intensity of traction along with becoming big the reducing of distance that separates between workpiece and the magnet.And the sucting strength of magnet is the function that enters the electromagnetic induction amount of the magnetic flux in the workpiece.Simultaneously, have been observed that level and smooth surface is easier to be attracted or keep in position than uneven or coarse surface.
In the prior art, electric permanent magnet (EPM) work holding apparatus of known magnetic flux upset type, wherein the magnetic pole of magnetic circuit by the permanent magnet of turning device is activated or is invalid.This is the combination of permanent magnet and electro permanent magnetic device: its advantage with latter does not have the former shortcoming simultaneously.These devices use the interior energy of permanent magnet device, rather than machinery " opening " or " pass ", but it need be similar to the electro permanent magnetic device only by the temporary transient electric pulse of carrying of electric winding.In case be unlocked, the just lasting unlimited time of these devices provides magnetic force, and irrelevant with exterior source of energy.For example, the U.S. Patent No. 4507635 of authorizing the Michele Cardone of Milan, ITA relates to a kind of magnetic permanent plant, comprises following combination: the outside ferromagnetic crown that is provided with substrate and sidewall; At least one group of four pole pieces, it limits many magnetic poles to correspondence of fixed surface, and described pole piece makes their longitudinal axis meet at right angles with substrate and is consistent with foursquare summit.And described equipment comprises a plurality of permanent magnets that are used to provide aforementioned magnetic pole, and described a plurality of permanent magnets place between the pole piece, and places between the latter and the described ferromagnetic crown.
The type of current obtainable magnet has the magnetic pole (north and south poles) that is separated by the non magnetic insulator between the independent magnetic pole.Described normally used magnetic insulating materials can be selected from epoxy resin, aluminium, brass, stainless steel etc.
Because each material coefficient of thermal expansion coefficient difference, so the working face of existing magnetic parts holding device is unsettled when temperature raises in process operation.This difference causes unsettled surface and often forms little opening, thereby cooling agent (using the immersion coolant fluid sometimes in process) enters the inside of parts holding device and makes winding/joint short circuit, or impairs the insulaion resistance of winding.
Usually, in this traditional parts holding device, all magnetic poles are by processing and assembled separately, and this possibility of weakness occurred existing on top work surface.And because the part of a lot of quantity needs to handle, institute is so that manufacture process difficulty and expending time in.
Unpractiaca is these chucks of maintenance, because any process of maintenance all must at first be damaged chuck.
And, another shortcoming of traditional magnetic work holding apparatus is that it can not be used to keep diamagnetism or paramagnetism workpiece, diamagnetism or paramagnetism workpiece must remove from the machine table of lathe usually as a result, and perhaps for example the holding device of clip or pliers must be installed in the top of equipment to keep diamagnetism or paramagnetism target.Any other of clamping work pieces is provided with the effective magnetic area that has also reduced working face greatly.
Summary of the invention
The solution that the object of the invention is to prevent above-mentioned disadvantage and finds above-mentioned disadvantage.
Main purpose of the present invention provides a kind of magnetic and/or mechanical work holding apparatus of binocular of novelty, and being used for processing/processing/fixing can be ferromagnetism, diamagnetism or even paramagnetic workpiece.
Further purpose of the present invention provides a kind of work holding apparatus with working face of monolithic iron content, and described working face has the separately slit of magnetic pole.
A further object of the present invention provides a kind of workpiece and keeps equipment, and the working face that described workpiece maintenance equipment has the monolithic iron content, described working face have and be used to insert clamping and holding device so that keep processed diamagnetism or the T shape slit of paramagnetism workpiece.
Another object of the present invention provides a kind of EPM work holding apparatus with monolithic working face, wherein be provided with the slit (T shape slit) of the dumb-bell shape of a plurality of inverted T-shapeds that extend on the whole length of described equipment and/or width or truncation, described slit separates magnetic pole and can be used for simultaneously processed target is clamped.
Another aspect of the present invention provides a kind of magnetic work holding apparatus, and it has and can be used in magnetically the fixedly monolithic working face of the iron content of metal parts, member or the entire equipment of iron content.
Aforementioned purpose realizes by the present invention, the present invention relates to a kind of EPM work holding apparatus that is used for magnetically and/or mechanically keeping workpiece, the monolithic working face that comprises substrate and iron content, described substrate has depression or the groove that holds reversible permanent magnet and electric winding, described working face has magnetic pole, described magnetic pole is by slit boundary and at the opposite side of described working face, groove be arranged on described slit below be used to hold irreversible permanent magnet.
Described parts holding device is provided with the T-slot of promising inverted T-shaped usually, and the length of its extend through work holding apparatus and/or width, described T shape slit not only separate magnetic pole, and make that workpiece or target can magnetically and/or mechanically be kept.
The shape of described slit can form: in the position of T shape slit, be the dumbbell shape of truncation, or other any suitable shape of being convenient to operate/fix, the latter preferably is convenient to operation and is easy to obtain apparatus for fastening.
Usually these slits are around the circumference manufacturing of magnetic pole, thus make magnetic pole effective magnetic area reduce minimum.T shape slit makes that for example the diamagnetism or the paramagnetic material of brass, aluminium, stainless steel, copper etc. can be clamped and processed.
Description of drawings
To the present invention be described by the illustrative embodiments of this specification below, wherein:
Fig. 1 has shown the longitudinal cross-section view of work holding apparatus;
Fig. 2 has shown the view of the electric permanent magnetism work holding apparatus that magnetically keeps ferromagnetic target; With
Fig. 3 has described the view that keeps the electric permanent magnetism work holding apparatus of workpiece under the help of mechanical clamp.
The specific embodiment
With reference to aforementioned figures, in Fig. 1, the parts maintenance face of equipment is (1), substrate is (2), and (3) have shown electric winding, and the magnetic pole of differentiation is (4), the still reversible magnet of the first cover permanent magnetism is with (6) expression, and the still irreversible magnet of the second cover permanent magnetism is represented by (5).Parts keep face (1) also to show the length of extend through work holding apparatus and/or the T shape slit (7) of width, and it is had an effect when handling diamagnetism or paramagnetism workpiece.
Fig. 2 has shown the assembly that magnetically keeps ferrous job (8), has avoided disposing the needs of other holding device.
In Fig. 3, shown that the help maintenance that utilizes mechanical clamp (9) is generally the view of the equipment of the present invention (1) of diamagnetism or paramagnetic target (8).
It can be seen that from aforementioned magnetic platform of the present invention (magnetic bed) also is used as machine table, thereby has improved the life-span of original machining platform.
The working face of maintenance equipment is obtained by monolithic (monolithic block) ferrimagnet, and wherein magnetic pole is distinguished by make slit on described monolithic, and this has eliminated the needs that use packing material.
And, replace a lot of pole pieces of use based on the quantity of the magnetic pole that early uses, have only the monolithic ferrimagnet to need to handle in this example, this makes that its manufacturing is simple relatively, and firmly with stable.
Another embodiment of the present invention is to provide a kind of magnetic work holding apparatus, it is to describe in the above and the modification of the electro permanent magnetic work holding apparatus that illustrates, be equipped with can be used in fixing/promote monolithic working face feeromagnetic metal parts, member or entire machine, that make by ferrimagnet.The electric permanent magnetism parts retainer of described variation is suitable for keeping ferromagnetic object, and have at least two magnetic poles, in described at least two magnetic poles each has irreversible permanent magnet and reversible permanent magnet, and described reversible permanent magnet is centered on by the electric winding of the upset of the magnetic pole that is used to influence reversible magnetic body.
This equipment obtains by two ferrimagnets, one as top work surface, and another is as substrate, wherein magnetic pole is demarcated by form groove on monolithic on the top work surface of parts retainer, and cavity is formed on the opposite side of magnetic pole so that locate reversible and irreversible permanent magnet, reversible permanent magnet is placed on the rear side of the magnetic pole that is centered on by electric winding, and irreversible permanent magnet is placed on the surface of the most close top work surface.The working surface that top work surface provides stable and prevented to leak.
The second monolithic ferromagnetic surface can be introduced by this way, promptly the second monolithic ferromagnetic surface remains on reversible permanent magnet between magnetic pole and the substrate in the mode in the middle of sandwiching, and remain on the substrate, and depression is formed for holding the directly irreversible permanent magnet below the magnetic pole of boundary.
As noted, the structural stability of legacy equipment is unsatisfactory, and is particularly especially true when carrying out load machining application greatly.The packing material that is generally epoxide also is easy to generate problem, because it causes parts to keep the nonuniform heating on surface, thereby causes the problem of precision.Cooling agent leaks/leaks into the performance of the equipment that influences in the magnet.
By processed top work surface and sidewall (this makes that structure is very firm) redesign work holding apparatus by the monolithic ferromagnet, the present invention has successfully solved the problems referred to above.
Single chip architecture of the present invention also has the groove that is used for to the magnetic pole boundary, and this has eliminated the needs that use packing material.And based on the needed a plurality of pole pieces of the quantity of magnetic pole, it is processed to have only single ferromagnetic block to need in traditional equipment in replacement, and this makes to make and is very easy to.
Major advantage of the present invention is summarized as follows:
1, the existence of "T"-shaped slit makes that the processing of workpiece is very firm, even for the diamagnetism or the paramagnet that are kept by machinery.
2, because single ferromagnetic block, all magnetic poles and sidewall are by good being connected, and this has increased stability of structure.
3, working face is complete anti-leak, and does not have liquid/coolant to infiltrate from top work surface.
4, because working face is made (and magnetic pole is marked well on working face) by the monolithic ferrimagnet, so eliminated the needs that use packing material at the top.
5, make by the monolithic ferrimagnet because of the working face of this equipment, keep on the surface so be evenly distributed in whole parts, thereby reduced the possibility of any inhomogeneous deformation greatly at the heat that for example grinds, produce in the process operation of shearing, grinding etc.
6, slit is around the circumference manufacturing of magnetic pole, and this has guaranteed the minimum that reduces of effective magnetic area.
7, the electric winding of maintenance does not exist any problem or difficulty because can be only by separately base portion and top work surface and easily near winding.
8, this has guaranteed the simple manufacturing of magnetic circuit, and this is the adjacent pole of opposed polarity separately usually, and what make manufacturing cost significantly reduces also to have simultaneously more performance.
It will be obvious to those skilled in the art that and to make other modification and improvement the present invention.Particular combinations in the part of this description and explanation only is to represent one embodiment of the present of invention in the mode of modification thus, rather than is used for being limited in option means or feature in spirit of the present invention and the protection domain.
After especially describing the present invention in detail with reference to interim and complete Figure of description, the present invention will more specifically be limited by claim.
Claims (10)
1, a kind of electric permanent magnetism equipment, has the monolithic working face that is used for magnetically and/or mechanically keeping workpiece, comprise: the monolithic working face of substrate (2) and iron content, described substrate has the empty depression that holds reversible permanent magnet (6) and electric winding (3), described working face has magnetic pole (4), and described magnetic pole (4) is by slit (7) boundary, and at the opposite side of described working face, groove be arranged on described slit (7) below, be used to hold irreversible permanent magnet (5).
2, electric permanent magnetism equipment according to claim 1, wherein said working face has a plurality of quadrangle parts.
3, electric permanent magnetism equipment according to claim 1, wherein said working face has slit, and described slit is a T shape slit (7); Described T shape slit not only separates magnetic pole but also makes that workpiece or target (8) magnetically and/or are mechanically kept.
4, electric permanent magnetism equipment according to claim 1, the dumbbell shape that is shaped as truncation of wherein said slit, or other any suitable shape of being convenient to operate/fix.
5, electric permanent magnetism equipment according to claim 1, wherein said slit is around the circumference manufacturing of magnetic pole, this guaranteed working face effective magnetic area reduce minimum.
6, electric permanent magnetism equipment according to claim 1, wherein, when diamagnetism or paramagnetic material are utilized that clip (9) or other any suitable holding device help and when remaining on the appropriate location, can be processed or handle.
7, electric permanent magnetism equipment according to claim 1, the working face of wherein electric permanent magnetism equipment is obtained by the monolithic ferrimagnet, wherein magnetic pole is demarcated by form slit/recess in described, this has eliminated the needs that use packing material, it is processed to have only the monolithic ferrimagnet to need, and this makes the simple relatively and feasible maintenance equipment of the manufacturing of electric permanent magnetism equipment firmly and stable.
8, according to each described electric permanent magnetism equipment among the aforementioned claim 1-7, be included in the combination of the permanent magnet in the electric permanent magnetism equipment of the object that is suitable for keeping iron content, described electric permanent magnetism equipment has at least two magnetic poles; In described at least two magnetic poles each has non-reversible permanent magnet and reversible permanent magnet, and described reversible permanent magnet is centered on by the electric winding of the upset of the magnetic polarity that is used to influence reversible permanent magnet.
9, electric permanent magnetism equipment according to claim 7, it is obtained by two ferrimagnets, one as top work surface, and another is as substrate, wherein magnetic pole is demarcated by form recess on monolithic on the top work surface of electric permanent magnetism equipment, and groove and empty depression are formed on the opposite side of described working face, and reversible permanent magnet is placed on the rear side of the magnetic pole that is centered on by electric winding, and irreversible permanent magnet is placed on the surface of the most close top work surface.
10, electric permanent magnetism equipment according to claim 7, wherein the second monolithic ferromagnetic surface can be put in this way, and promptly the second monolithic ferromagnetic surface remains on reversible permanent magnet between magnetic pole and the substrate in the mode in the middle of sandwiching, and remains on the substrate.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN345/KOL/2005 | 2005-04-25 | ||
| IN345KO2005 | 2005-04-25 | ||
| IN883/KOL/2005 | 2005-09-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101166606A CN101166606A (en) | 2008-04-23 |
| CN100577365C true CN100577365C (en) | 2010-01-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200680014066A Expired - Fee Related CN100577365C (en) | 2005-04-25 | 2006-04-06 | Electric permanent-magnet device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100577365C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012100379A1 (en) * | 2011-01-30 | 2012-08-02 | 布里斯克磁业(上海)有限公司 | Magnetic-variation type electrical permanent-magnetic chuck |
| ITMI20111679A1 (en) * | 2011-09-19 | 2013-03-20 | Tecnomagnete Spa | MODULAR MAGNETIC DEVICE FOR ANCHORING FERROMAGNETIC PIECES. |
| CN108724057B (en) * | 2018-08-17 | 2019-09-17 | 燕山大学 | A kind of assembled electric permanent-magnet suction disc |
| CN109500739A (en) * | 2018-12-25 | 2019-03-22 | 江苏美龙航空部件有限公司 | A kind of composite material encapsulating testpieces stationary fixture and its fixing means |
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2006
- 2006-04-06 CN CN200680014066A patent/CN100577365C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101166606A (en) | 2008-04-23 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| ASS | Succession or assignment of patent right |
Owner name: SARDA UTTAM Free format text: FORMER OWNER: EAST COAST ENTERPRISERS LTD. Effective date: 20120928 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120928 Address after: India, Calcutta Patentee after: Sarda Uttam Address before: India, Calcutta Patentee before: East Coast Enterprisers Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100106 Termination date: 20210406 |