CN106272060A - A kind of fixture ground for neodymium iron boron product and the grinding method of neodymium iron boron product - Google Patents
A kind of fixture ground for neodymium iron boron product and the grinding method of neodymium iron boron product Download PDFInfo
- Publication number
- CN106272060A CN106272060A CN201610757113.5A CN201610757113A CN106272060A CN 106272060 A CN106272060 A CN 106272060A CN 201610757113 A CN201610757113 A CN 201610757113A CN 106272060 A CN106272060 A CN 106272060A
- Authority
- CN
- China
- Prior art keywords
- product
- iron boron
- neodymium iron
- groove
- fixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
The invention provides a kind of fixture ground for neodymium iron boron product, including for placing the detent of neodymium iron boron product, alignment pin and locating dowel；Described detent includes the first side, the second side being connected respectively and the 3rd side with described first side；Described second side and the 3rd side are oppositely arranged；Described alignment pin is through the first side of described detent；Described locating dowel is oppositely arranged with described first side, and described locating dowel both sides are respectively the second side and the 3rd side.Neodymium iron boron magnetic body can effectively be positioned, especially for the magnet of class column type by the fixture that the present invention provides, it is possible to realizes during molding positioning accurately grinding of product, thus ensures the radial magnetizing of final products and the technology requirement of magnetic declination.
Description
Technical field
The invention belongs to magnet preparing technical field, particularly relate to a kind of fixture ground for neodymium iron boron product and neodymium ferrum
The grinding method of boron product.
Background technology
Magnet is the material that can produce magnetic field, has the characteristic attracting the metals such as ferromagnetic material such as ferrum, nickel, cobalt.Magnetic
Body is generally divided into permanent magnet (hard magnetic body) and soft magnetic bodies, and hard magnetic body can be divided into again natural magnet and artificial magnet, artificial magnet
Refer to can be reached by the alloy of synthesis different materials the effect identical with natural magnet (magnet), but also can improve
Magnetic force.The sixties in 20th century, the appearance of rare earth permanent magnet, then the application for magnet opens a New Times, and first generation SmCo is forever
Magnetic SmCo5, second filial generation precipitation hardenable samarium cobalt permanent magnet Sm2Co17, up to now, develop into third generation Nd-Fe-B permanent magnet material
(NdFeB).Although ferrimagnet remains the permanent magnet material that consumption is maximum at present, but the output value of neodymium iron boron magnetic body is super
Cross ferrite permanent-magnet materials, have evolved into a big industry.
Neodymium iron boron magnetic body is also referred to as neodymium magnet (Neodymium magnet), and its chemical formula is Nd2Fe14B, is a kind of artificial
Permanent magnet, be also the permanent magnet so far with the strongest magnetic force, its maximum magnetic energy product (BHmax) exceeds ferrite 10
More than Bei, when naked magnetic, its magnetic force can reach 3500 Gauss.The advantage of neodymium iron boron magnetic body is that cost performance is high, body
Long-pending little, lightweight, good mechanical property and the feature such as magnetic is strong, be described as magnetic king in magnetics circle.At present, industry is frequently with burning
Connection makes Nd-Fe-B permanent magnet material, as Wang Wei waits " key process parameter and alloying element are to Sintered NdFeB magnetic property and power
Learn performance impact " in disclose use sintering process manufacture Nd-Fe-B permanent magnet material technological process, mainly melting, powder process,
Compressing, isostatic pressed and five steps of sintering, specifically include that dispensing, melt-spun, steel ingot be broken, powder process, pulverizing, powder take
To compressing, isostatic pressed compacting, vacuum-sintering, grind the step such as molding and plating.
Along with deterioration and the shortage of resource of environment, green manufacturing and energy-conservation become the two the most main of current era development
Topic.At industrial robots such as defence and military, chemical industry, light industrys, the application demand of the service robot such as home services, Edutainment,
And the promotion energetically of new-energy automobile and fast development, all it be unable to do without the support of permanent magnet material.Especially it is referred to as permanent magnetism king
Neodymium iron boron magnetic body, it is applied to many fields due to higher performance.
But along with downstream every field is more and more higher to the requirement of magnet, its preparation and extension are also always the most persistently closed
The focus of note, the particularly configuration design of magnet, due to magnet different and general metal products, at the machine-shaping of its profile
Place is required for considering the impact on magnetic property, and however as the extension in magnet applications field, magnet is often required to grind processing
Become with various additional shapes, as with boss or ladder etc., especially for class column type magnet again with boss or
Ladders etc., are then difficult to both ensure the requirement of the magnetic declination of neodymium iron boron in prior art, ensure that the molding of neodymium iron boron is wanted again simultaneously
Ask, in turn resulted in substantial amounts of percent defective.
Therefore, how on the basis of ensureing the requirement of magnetic declination of neodymium iron boron, it is achieved the machine-shaping requirement of magnet,
Through becoming neodymium iron boron manufacturing enterprise problem demanding prompt solution in the industry.
Summary of the invention
In view of this, the technical problem to be solved in the present invention be to provide a kind of fixture ground for neodymium iron boron product and
The grinding method of neodymium iron boron product, neodymium iron boron magnetic body can effectively be positioned by the offer fixture of the present invention, the most right
Magnet in class column type, it is possible to realize accurate location during molding grinding of product, thus ensure final products
The technology requirement of radial magnetizing and magnetic declination.
The invention provides a kind of fixture ground for neodymium iron boron product, including the location for placing neodymium iron boron product
Groove, alignment pin and locating dowel；
Described detent includes the first side, the second side being connected respectively and the 3rd side with described first side
Face；
Described second side and the 3rd side are oppositely arranged；
Described alignment pin is through the first side of described detent；
Described locating dowel is oppositely arranged with described first side, and described locating dowel both sides are respectively the second side and the 3rd side
Face.
Preferably, the groove inside dimension of described detent and the overall dimensions of described neodymium iron boron product are suitable.
Preferably, described second side is provided with open slot；It is provided with open slot on described 3rd side.
Preferably, described detent also includes the 4th side；
Described 4th side next-door neighbour's locating dowel is arranged, and is arranged far from the direction of described first side；
Described 4th side is connected with described second side and the 3rd side respectively.
Present invention also offers the grinding method of a kind of neodymium iron boron product, comprise the following steps:
A) in orientation pressing process, marker groove is formed in a bottom surface of class cylinder neodymium iron boron magnetic body pressed compact,
To the neodymium iron boron magnetic body pressed compact with marker groove；
The length direction of described marker groove is perpendicular with the magnetizing direction of described orientation compacting；
B) the neodymium iron boron magnetic body pressed compact with marker groove above-mentioned steps obtained, after oversintering, obtains magnet hair
Base；
C) magnet blank above-mentioned steps obtained, after primary grinds, obtains the primary product with marker groove；
D) primary product that above-mentioned steps obtains are placed in the fixture described in technique scheme any one grind
After system processing, obtain neodymium iron boron product.
Preferably, be placed in described in concretely comprises the following steps:
First primary product are had the locating dowel direction of the corresponding described fixture in bottom surface of marker groove, another of primary product
First side of the corresponding described fixture in individual bottom surface is placed；Described locating dowel is formed to fix with described marker groove and coordinates；
Then rotational positioning pin, fixing primary product.
Preferably, described primary grinds as centreless grinding；
Described grinding is processed as molding mill.
Preferably, the length of described marker groove is equal with the basal diameter of described primary product；
The length direction of described marker groove is perpendicular with the magnetizing direction of described orientation compacting；
Described marker groove is semi-circular groove.
Preferably, the groove inside dimension of described detent and the overall dimensions of described primary product are matched in clearance.
Preferably, the maximal clearance of described matched in clearance is 0.10mm.
The invention provides a kind of fixture ground for neodymium iron boron product, including the location for placing neodymium iron boron product
Groove, alignment pin and locating dowel；Described detent includes the first side, the second side being connected respectively with described first side
Face and the 3rd side；Described second side and the 3rd side are oppositely arranged；Described alignment pin is through the first of described detent
Side；Described locating dowel is oppositely arranged with described first side, and described locating dowel both sides are respectively the second side and the 3rd side.
Compared with prior art, neodymium iron boron magnetic body can effectively be positioned by the fixture that the present invention provides, especially for class circle
The magnet of column type, particular with the cylindrical magnets of other structures, it is possible to realize accurately during molding grinding of product
Location, thus ensure the radial magnetizing of final products and the technology requirement of magnetic declination.Test result indicate that, use the present invention to carry
The fixture of confession and grinding method, the size of obtained product has higher concordance, and deviation is less than or equal to 0.04mm；Have
Less magnetic declination deviation range, the scope of data of distribution is 0～0.5 °, 0.5～1.0 °, 1.5～2.0 °, 2.0～2.5 °,
2.5～3 °.
Accompanying drawing explanation
The vertical view simplified schematic diagram of the fixture ground for neodymium iron boron product that Fig. 1 provides for the present invention；
The section simplified schematic diagram of the fixture ground for neodymium iron boron product that Fig. 2 provides for the present invention；
The outside drawing in kind of the fixture ground for neodymium iron boron product that Fig. 3 provides for the embodiment of the present invention 2；
Primary product with marker groove that Fig. 4 provides for the embodiment of the present invention 3 and the outside drawing in kind of fixture；
Fig. 5 is the outline dimensional drawing of the product of the embodiment of the present invention 2 preparation.
Detailed description of the invention
In order to be further appreciated by the present invention, below in conjunction with embodiment, the preferred embodiment of the invention is described, but
Should be appreciated that these descriptions are intended merely to further illustrate the features and advantages of the present invention rather than to invention claim
Limit.
The all raw materials of the present invention, are not particularly limited its source, that commercially buy or according to people in the art
Prepared by the conventional method known to Yuan.
The all raw materials of the present invention, are not particularly limited its purity, present invention preferably employs analytical pure.
The invention provides a kind of fixture ground for neodymium iron boron product, including the location for placing neodymium iron boron product
Groove, alignment pin and locating dowel；
Described detent includes the first side, the second side being connected respectively and the 3rd side with described first side
Face；
Described second side and the 3rd side are oppositely arranged；
Described alignment pin is through the first side of described detent；
Described locating dowel is oppositely arranged with described first side, and described locating dowel both sides are respectively the second side and the 3rd side
Face.
The fixture ground for neodymium iron boron product that the present invention provides, including recessed for placing the location of neodymium iron boron product
Groove.
In the present embodiment, the groove inside dimension of described detent and the overall dimensions of described neodymium iron boron product are for fit mutually
Join, its role is to preferably place and fix neodymium iron boron product.In other embodiments, the groove inside dimension of described detent
Can be any size, being beneficial to preferably place and fix neodymium iron boron product be preferred version.The present invention is to described adaptation
Concept is not particularly limited, and with the concept of adaptation well known to those skilled in the art, those skilled in the art can basis
Practical condition, product design require and characteristic requirements select or adjust, adaptation of the present invention preferably with profile
Or adjoining dimensions, more preferably matched in clearance；The design parameter of described matched in clearance is not particularly limited by the present invention, this area
Technical staff can require according to practical condition, product design and characteristic requirements selects or adjusts, institute of the present invention
The maximal clearance stating matched in clearance is preferably 0.10mm, more preferably 0.08mm, more preferably 0.05mm, most preferably
0.02mm。
In the present embodiment, described detent includes the first side, second be connected respectively with described first side
Side and the 3rd side；Described second side and the 3rd side are oppositely arranged, and its role is to the first side, the second side and
Three sides form three faces of detent, preferably place and fixing neodymium iron boron product.In other embodiments, described first
The position relationship of side, the second side and the 3rd side can be preferably other position relationships, is beneficial to preferably place and consolidate
Determining neodymium iron boron product is preferred version.The described concept being oppositely arranged is not particularly limited, with people in the art by the present invention
The connotation being oppositely arranged known to Yuan, of the present invention being oppositely arranged refers to be configured in opposite.The present invention is to upper
The mode stating connection is not particularly limited, with connected mode well known to those skilled in the art, connection of the present invention
Mode be preferably one-body molded when making, weld, bond or fix with bolt, one-body molded when more preferably making.
In the present embodiment, described fixture includes alignment pin, and described alignment pin is through the first side of described detent；
Preferably a part is in detent for described alignment pin, and another part is outside detent, it is possible to rotate, and adjusts a part
And the ratio between another part, the effect that its role is to have adjustment also preferably fastens neodymium iron boron product.Real at other
Executing in example, described alignment pin can be preferably other similar structures, is beneficial to more preferable Adjustment effect and preferably fastens neodymium
Ferrum boron product is preferred version.The specifically chosen of described alignment pin is not particularly limited by the present invention, with those skilled in the art
Known to there is identity function part, those skilled in the art can according to practical condition, product design require with
And characteristic requirements selects or adjusts, alignment pin of the present invention is particularly preferred as cylindrical core, more preferably bolt；Described
The size of bolt carries out adaptability preparation according to the size of groove and the size of product.
In the present embodiment, described fixture includes locating dowel, and described locating dowel is oppositely arranged with described first side, described
Locating dowel both sides are respectively the second side and the 3rd side.Locating dowel of the present invention is positioned at the first side on space structure
The position at relative place, face, the i.e. detent of the present invention have three sides and a locating dowel, relative to groove body
For, described locating dowel is arranged at the opposite of described first side, thus forms the detent knot that can be fixed
Structure.Its role is to place and fixing neodymium iron boron product.In other embodiments, the position of described locating dowel can be preferably it
His position, being beneficial to preferably place and fix neodymium iron boron product is preferred version.The present invention concrete choosing to described locating dowel
Selecting and be not particularly limited, have identity function part with well known to those skilled in the art, those skilled in the art are permissible
Requiring according to practical condition, product design and characteristic requirements selects or adjusts, alignment pin of the present invention is concrete
It is preferably screw；The size of described screw carries out adaptability preparation according to the size of groove and the size of product, is specifically as follows
M5 screw.
See the vertical view simplified schematic diagram of the fixture ground for neodymium iron boron product that Fig. 1, Fig. 1 provide for the present invention, wherein,
1 is detent, and 2 is alignment pin, and 3 is locating dowel.See Fig. 2, Fig. 2 for grinding for neodymium iron boron product of providing of the present invention
The section simplified schematic diagram of fixture, wherein, 1 is detent, and 2 is alignment pin, and 3 is locating dowel.
In the present embodiment, described detent the most also includes the 4th side；Described 4th side is preferably close to location
Post is arranged, and is arranged far from the direction of described first side；Described 4th side the most respectively with described second side and
Three sides are connected.The most heretofore described first side, the second side, the 3rd side and the 4th side form detent
Four faces, its role is to place and fixing neodymium iron boron product, alleviate the external forces of locating dowel simultaneously.In other embodiments
In, described detent can also include that other devices or described 4th side can be preferably other positions, is beneficial to more preferably
Placement and fixing neodymium iron boron product, the external forces simultaneously alleviating locating dowel is preferred version.The present invention is to the described 4th
The concrete structure of side is not particularly limited, those skilled in the art can according to practical condition, product design require with
And characteristic requirements selects or adjusts, the present invention is preferably to alleviate the external forces suffered by locating dowel, described 4th side
Being preferably provided with fluted on face, the shape of described groove is preferably suitable with the shape of described locating dowel, so that locating dowel
In laminating or embedding the 4th side.The mode of above-mentioned connection is not particularly limited by the present invention, knows with those skilled in the art
Connected mode, the mode of connection of the present invention be preferably one-body molded when making, weld, bond or solid with bolt
Fixed, one-body molded or welding when more preferably making.
In the present embodiment, described second side is provided with open slot.Have on the most heretofore described second side
Opening, its role is to be easy to the excretion of feeding and grinding material.In other embodiments, described second side can also be arranged
Having other devices, the excretion being beneficial to more preferable feeding and grinding material is preferred version.The present invention is concrete to described open slot
Shape is not particularly limited, and those skilled in the art can require and characteristic requirements according to practical condition, product design
Selecting or adjust, the thickness of open slot of the present invention is preferably identical with the thickness of the second side, and described open slot is preferred
There is the square openings groove of chamfering for square aperture groove, more preferably square openings groove, more preferably both sides；Described opening
The size of groove according to the size of the second side, product size and grinding material number carry out adaptability preparation, be specifically as follows
5X5cm。
In the present embodiment, described 3rd side is provided with open slot.Have on the most heretofore described 3rd side
Opening, its role is to be easy to the excretion of feeding and grinding material.In other embodiments, described 3rd side can also be arranged
Having other devices, the excretion being beneficial to more preferable feeding and grinding material is preferred version.The present invention is concrete to described open slot
Shape is not particularly limited, and those skilled in the art can require and characteristic requirements according to practical condition, product design
Selecting or adjust, the thickness of open slot of the present invention is preferably identical with the thickness of the 3rd side, and described open slot is preferred
There is the square openings groove of chamfering for square aperture groove, more preferably square openings groove, more preferably both sides；Described opening
The size of groove according to the 3rd side size, product size and grinding material number carry out adaptability preparation, be specifically as follows
5X5cm。
Profile and the size of described neodymium iron boron product are not particularly limited by the present invention, with well known to those skilled in the art
The profile of neodymium iron boron product and size, those skilled in the art can want according to practical condition, product design size
Asking and characteristic requirements selects or adjusts, the profile of neodymium iron boron product of the present invention is preferably class cylinder, more preferably
For cylinder, most preferably one bottom surface has the cylinder of marker groove.The shape of described marker groove is not had by the present invention
Limiting especially, those skilled in the art can be carried out according to practical condition, product design dimensional requirement and characteristic requirements
Selecting or adjust, the length of marker groove of the present invention is equal with the basal diameter of described neodymium iron boron product；Described labelling is recessed
The length direction of groove is preferably perpendicular with the magnetizing direction of described orientation compacting；The size of described marker groove is preferably fixed with described
The size of position post adapts.
Above-mentioned steps of the present invention provides a kind of fixture ground for neodymium iron boron product, and it can be effectively to neodymium iron boron
Magnet positions, especially for the magnet of class column type, it is possible to product grind realize during molding accurate fixed
Position, thus ensure the radial magnetizing of final products and the technology requirement of magnetic declination.
Present invention also offers the grinding method of a kind of neodymium iron boron product, comprise the following steps:
A) in orientation pressing process, marker groove is formed in a bottom surface of class cylinder neodymium iron boron magnetic body pressed compact,
To the neodymium iron boron magnetic body pressed compact with marker groove；
The length direction of described marker groove is perpendicular with the magnetizing direction of described orientation compacting；
B) the neodymium iron boron magnetic body pressed compact with marker groove above-mentioned steps obtained, after oversintering, obtains magnet hair
Base；
C) magnet blank above-mentioned steps obtained, after primary grinds, obtains the primary product with marker groove；
D) primary product that above-mentioned steps obtains are placed in the fixture described in Claims 1 to 4 any one grind
After system processing, obtain neodymium iron boron product.
The present invention, first in orientation pressing process, forms labelling in a bottom surface of class cylinder neodymium iron boron magnetic body pressed compact
Groove, obtains the neodymium iron boron magnetic body pressed compact with marker groove；
The length direction of described marker groove is perpendicular with the magnetizing direction of described orientation compacting.
The source of described neodymium iron boron magnetic body pressed compact is not particularly limited by the present invention, with burning well known to those skilled in the art
Conventional production of knot neodymium iron boron prepares, those skilled in the art can according to practical condition, shape requirement with
And properties of product select and adjust, the present invention preferably neodymium iron boron raw material is quick-fried through dispensing, melting, hydrogen, powder process, molding take
Obtain after one or multi-step production process preparation in compacting, more preferably sequentially pass through that dispensing, melting, hydrogen is quick-fried, powder process, one-tenth
After type orientation compacting preparation, obtain neodymium iron boron magnetic body pressed compact.The trade mark of described neodymium iron boron magnetic body is not particularly limited by the present invention,
With the trade mark of routine well known to those skilled in the art, those skilled in the art can be according to Practical Calculation situation, product
Calculate requirement and product grade selects or adjusts.
The content of neodymium iron boron magnetic body pressed compact is not particularly limited by the present invention, forms the most by mass percentage, including Pr-
Nd:28%～33%；Dy:0～10%；Tb:0～10%；Nb:0～5%；Al:0～1%；B:0.5%～2.0%；Cu:0～
1%；Co:0～3%；Ga:0～2%；Gd:0～2%；Ho:0～2%；Zr:0～2%；Surplus is Fe.Wherein said Pr-Nd
Mass percentage content be preferably 29%～33%, more preferably 29%～32%, most preferably 29.5%～31%；Described
The mass percentage content of Dy is preferably 1.0%～9.0%, more preferably 2.0%～8.0%, most preferably 3.0%～
7.0%；The mass percentage content of described Tb is preferably 1.0%～9.0%, more preferably 2.0%～8.0%, most preferably
3.0%～7.0%；The mass percentage content of described Nb is preferably 1.0%～4.0%, more preferably 1.5%～3.5%,
It is preferably 1.8%～3.2%；The mass percentage content of described Al be preferably 0.2%～0.8%, more preferably 0.3%～
0.6%, most preferably 0.3%～0.5%；The mass percentage content of described B is preferably 0.8%～1%, more preferably
0.85%～1.3%, more preferably 0.9%～1.2%, most preferably 0.9%～1.1%；The mass percent of described Cu contains
Amount preferably 0.01%～0.8%, more preferably 0.02%～0.7%, most preferably 0.03%～0.6%；The matter of described Co
Amount degree is preferably 0.2%～2.0%, more preferably 0.3%～1.5%, most preferably 0.4%～1.2%；Described
The mass percentage content of Ga is preferably 0%～1.5%, more preferably 0.1%～1.2%, more preferably 0.15%～
1.0%, most preferably 0.2%～0.9%；The mass percentage content of described Gd is preferably 0.3%～1.5%, more preferably
0.5%～1.2%, more preferably 0.7%～1.0%, most preferably 0.8%～0.9%；The mass percentage content of described Ho
Be preferably 0.3%～1.5%, more preferably 0.5%～1.2%, more preferably 0.7%～1.0%, most preferably 0.8%～
0.9%；The mass percentage content of described Zr is preferably 0%～1.5%, more preferably 0.1%～1.2%, more preferably
0.15%～1.0%, most preferably 0.2%～0.9%.
The connotation of one bottom surface of described class cylinder neodymium iron boron magnetic body pressed compact is not particularly limited by the present invention, this area
Technical staff can select according to practical condition, shape requirement and properties of product and adjust, class of the present invention
Cylinder neodymium iron boron magnetic body pressed compact has two bottom surfaces, and wherein any one bottom surface all can have marker groove, it is also possible to two
Individual bottom surface all has marker groove.
The shape of described marker groove is not particularly limited by the present invention, with groove shapes well known to those skilled in the art
, those skilled in the art can select according to practical condition, product design dimensional requirement and characteristic requirements
Or adjust, marker groove of the present invention is preferably semi-circular groove, the length of described marker groove preferably with described neodymium iron boron
The basal diameter of product is equal, and the length direction of described marker groove is perpendicular with the magnetizing direction of described orientation compacting.
Size or the lateral dimension of marker groove of the present invention are not particularly limited, and those skilled in the art can basis
Practical condition, product design dimensional requirement and characteristic requirements select or adjust, marker groove of the present invention
Size or lateral dimension preferably size or diameter dimension with described locating dowel adapts such that it is able to preferably realize having mark
The location of the primary product of note groove and fastening.
What then above-mentioned steps was obtained by the present invention has the neodymium iron boron magnetic body pressed compact of marker groove after oversintering, obtains
Magnet blank.
Concrete steps and the parameter of sintering of the present invention are not particularly limited, with neodymium ferrum well known to those skilled in the art
Boron magnet sintering concrete steps and parameter, those skilled in the art can according to practical condition, product requirement with
And performance requirement selects or adjusts, sintering of the present invention preferably includes sintering and tempering process.Invent described tempering
Concrete steps and parameter are not particularly limited, the concrete steps being tempered with neodymium iron boron magnetic body well known to those skilled in the art and ginseng
Number, those skilled in the art can select according to practical condition, product requirement and performance requirement or adjust.
The magnet blank that above-mentioned steps is obtained by the present invention again, after primary grinds, obtains the primary with marker groove
Product.
Described primary is ground and is not particularly limited by the present invention, at the beginning of neodymium iron boron magnetic body well known to those skilled in the art
Level grinds process, and those skilled in the art can select according to practical condition, product requirement and performance requirement
Selecting or adjust, primary of the present invention grinds preferably centreless grinding processed.
The primary product that above-mentioned steps obtains finally are placed in the fixture described in technique scheme any one by the present invention
In carry out grinding processing after, obtain neodymium iron boron product.
The described method being placed in is not particularly limited by the present invention, and those skilled in the art can be according to actual production feelings
Condition, product requirement and performance requirement select or adjust, and the present invention is to improve the placement of primary product and fixing, described in put
In concrete steps be preferably:
First primary product are had the locating dowel direction of the corresponding described fixture in bottom surface of marker groove, another of primary product
First side of the corresponding described fixture in individual bottom surface is placed；Described locating dowel is formed to fix with described marker groove and coordinates；
Then rotational positioning pin, fixing primary product.
Described correspondence is not particularly limited by the present invention, with concept well known to those skilled in the art, institute of the present invention
Stating correspondence to refer to, during placement, the locating dowel of described fixture, described primary product are pressed close in the bottom surface of the marker groove of described primary product
The first side of described fixture is pressed close in another bottom surface of product.Described fixing cooperation is not particularly limited, with ability by the present invention
The concept fixing cooperation known to field technique personnel, fixing cooperation of the present invention refers to that described locating dowel can card residence
State marker groove, thus fix primary product.
Above-mentioned steps of the present invention provides the grinding method of a kind of neodymium iron boron product, and the present invention is by shape during pressed compact
Become marker groove to carry out telltale mark, and the magnetizing direction of the length direction of marker groove with described orientation compacting is hung down mutually
Directly；The fixture ground for neodymium iron boron product provided in conjunction with the present invention, by suitable with marker groove, it is possible to effective
Neodymium iron boron magnetic body is positioned, especially for the magnet of class column type, it is possible to realize during molding grinding of product
Accurate location, thus ensure the radial magnetizing of final products and the technology requirement of magnetic declination.Test result indicate that, use this
The fixture of bright offer and grinding method, the size of obtained product has higher concordance, and deviation is less than or equal to 0.04mm；
Magnetic declination scope is uniform, and the scope of data of distribution is 0～0.5 °, 0.5～1.0 °, 1.5～2.0 °, 2.0～2.5 °, 2.5～3 °.
In order to further illustrate the present invention, the one provided the present invention below in conjunction with embodiment is ground for neodymium iron boron product
Fixture and the grinding method of system are described in detail, but it is to be understood that these embodiments are to be with technical solution of the present invention
Implement under premise, give detailed embodiment and concrete operating process, simply for further illustrate the present invention's
Feature and advantage rather than limiting to the claimed invention, protection scope of the present invention is also not necessarily limited to following embodiment.
Embodiment 1
A kind of fixture ground for neodymium iron boron product is provided, including the detent for placing neodymium iron boron product, determines
Position pin and locating dowel.
Detent includes the first side, and the second side of being connected with the first side respectively and the 3rd side,
Two side faces and the 3rd side are oppositely arranged.It is provided with open slot on second side, the 3rd side is provided with open slot.
Alignment pin is through the first side of detent.
Locating dowel is oppositely arranged with the first side, and locating dowel both sides are respectively the second side and the 3rd side.
The groove inside dimension of detent is according to the profile arrangement of neodymium iron boron product, with the overall dimensions of neodymium iron boron product
For suitable.
See the vertical view simplified schematic diagram of the fixture ground for neodymium iron boron product that Fig. 1, Fig. 1 provide for the present invention, wherein,
1 is detent, and 2 is alignment pin, and 3 is locating dowel.See Fig. 2, Fig. 2 for grinding for neodymium iron boron product of providing of the present invention
The section simplified schematic diagram of fixture, wherein, 1 is detent, and 2 is alignment pin, and 3 is locating dowel.
Embodiment 2
1. through centreless grinding, the blank sintered out being processed qualified light beam, size is at D15.98-0/-0.04mm, really
Protect cylindricity at 0.03mm.
2. the light beam of break-in lattice, beat fraising size at D8+0.04/+0, axiality is at 0.15mm.
3. the product after processing being carried out topmost operation, molding mill processes, and needs the positioning tool using design
Realize the location of product.As shown in pictorial diagram.It is fixed on molding plain grinding lathe work top.Utilize flat-faced wheel to product cylinder
Face is shaped processing.The profile of processing, sees the outline dimensional drawing of the product that Fig. 5, Fig. 5 are the embodiment of the present invention 2 preparation.
4. the positioning tool using design is possible not only to realize the molding of planar table terrace, and be more mainly can ensure that product
The technology requirement of product magnetic declination.The platform size basic controlling of machine-shaping is in the range of 15.3-0/-0.04mm, it is ensured that molding
Platform and the orientation of design want keeping parallelism state.7. the product needed of molding is through section, is processed into 3.7+0.01/-
The semi-finished product black-film of 0.03mm thickness.
5. the further chamfered of product needed, inner bore chamfering C0.2-0.3mm, outer circular vibration chamfering light decorations control
R0.4-0.6mm。
6. electroplating processes, product needed processes through surface, obtains final finished size requirement.
7. the magnetic declination inspection that product needed is final, result shows, the magnetic declination deviation after processing is little, magnetic declination scope energy
Enough controlling at 0～3 °, equipment is magnetic declination test instrunment；It is able to ensure that the declination diagram paper code requirement of product.
Only enumerating 100 groups of data, referring to table 1, table 1 is the magnetic declination data of the magnet of the embodiment of the present invention 2 preparation.
The magnetic declination data of the magnet of table 1 embodiment of the present invention 2 preparation
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 0.512 | 0.919 | 0.125 | 1.714 | 0.799 | 0.995 | 2.951 | 2.724 | 2.823 | 1.615 |
| 1.392 | 1.877 | 0.828 | 2.672 | 1.986 | 2.051 | 2.14 | 2.667 | 0.931 | 0.528 |
| 2.387 | 0.654 | 1.206 | 0.782 | 2.780 | 0.822 | 1.519 | 2.283 | 1.050 | 2.562 |
| 2.381 | 0.683 | 1.051 | 0.922 | 2.361 | 2.913 | 2.27 | 0.313 | 1.407 | 0.774 |
| 0.473 | 1.380 | 1.863 | 0.627 | 2.161 | 0.625 | 0.953 | 0.777 | 0.215 | 1.708 |
| 2.82 | 1.716 | 1.201 | 0.267 | 1.136 | 1.112 | 1.454 | 1.269 | 1.168 | 0.688 |
| 0.941 | 2.245 | 2.94 | 1.076 | 0.924 | 0.744 | 1.055 | 1.147 | 1.668 | 0.438 |
| 0.545 | 1.249 | 0.540 | 0.276 | 0.747 | 2.384 | 0.587 | 1.384 | 1.777 | 1.445 |
| 0.246 | 0.990 | 0.798 | 0.831 | 1.832 | 1.071 | 0.396 | 0.672 | 2.113 | 0.578 |
| 0.288 | 2.527 | 0.838 | 2.805 | 2.059 | 2.376 | 0.609 | 1.963 | 0.942 | 2.197 |
As shown in Table 1, the magnetic declination of the magnet of the embodiment of the present invention 2 preparation controls in the range of 3 °.
Data size distribution after Jia Gong, only enumerates 50 packet size data.Referring to table 2, table 2 is the embodiment of the present invention 2
The sized data of the magnet of preparation.
The sized data of the magnet of table 2 embodiment of the present invention 2 preparation
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 15.27 | 15.28 | 15.27 | 15.27 | 15.28 | 15.28 | 15.27 | 15.26 | 15.26 | 15.27 |
| 15.27 | 15.28 | 15.27 | 15.27 | 15.27 | 15.28 | 15.28 | 15.26 | 15.30 | 15.30 |
| 15.30 | 15.28 | 15.28 | 15.28 | 15.27 | 15.28 | 15.28 | 15.26 | 15.26 | 15.30 |
| 15.28 | 15.28 | 15.27 | 15.26 | 15.26 | 15.28 | 15.26 | 15.30 | 15.26 | 15.26 |
| 15.28 | 51.28 | 15.28 | 15.27 | 15.28 | 15.27 | 15.28 | 15.28 | 15.27 | 15.28 |
As shown in Table 2, the size Control of the magnet of the embodiment of the present invention 2 preparation is in the range of 15.26～15.30mm, i.e.
Deviation is less than 0.04mm.
N level is as shown in Figure 5.
Embodiment 3
Fixture based on embodiment 1, on its basis, detent also includes the 4th side, the 4th next-door neighbour location, side
Post is arranged, and is arranged far from the direction of the first side；4th side is connected with described second side and the 3rd side respectively.
See outside the material object of primary product with marker groove that Fig. 4, Fig. 4 provide for the embodiment of the present invention 3 and fixture
See figure.
A kind of fixture ground for neodymium iron boron product and the grinding method that there is provided the present invention above have carried out detailed
Introducing, principle and the embodiment of the present invention are set forth by specific case used herein, the explanation of above example
It is only intended to help to understand method and the core concept thereof of the present invention, including best mode, and also makes any of this area
Technical staff can put into practice the present invention, including manufacturing and using any device or system, and the method implementing any combination.Should
When pointing out, for those skilled in the art, under the premise without departing from the principles of the invention, it is also possible to this
Invention carries out some improvement and modification, and these improve and modify in the protection domain also falling into the claims in the present invention.The present invention
The scope of patent protection is defined by the claims, and those skilled in the art can be included it is conceivable that other embodiments.
If these other embodiments have the structural element being not different from claim character express, if or they include with
The character express of claim is without the equivalent structural elements of essence difference, then these other embodiments also should be included in right and want
In the range of asking.
Claims (10)
1. the fixture ground for neodymium iron boron product, it is characterised in that include that the location for placing neodymium iron boron product is recessed
Groove, alignment pin and locating dowel；
Described detent includes the first side, the second side being connected respectively and the 3rd side with described first side；
Described second side and the 3rd side are oppositely arranged；
Described alignment pin is through the first side of described detent；
Described locating dowel is oppositely arranged with described first side, and described locating dowel both sides are respectively the second side and the 3rd side.
Fixture the most according to claim 1, it is characterised in that the groove inside dimension of described detent is produced with described neodymium iron boron
The overall dimensions of product is suitable.
Fixture the most according to claim 1, it is characterised in that be provided with open slot on described second side；Described 3rd
Open slot it is provided with on side.
Fixture the most according to claim 1, it is characterised in that described detent also includes the 4th side；
Described 4th side next-door neighbour's locating dowel is arranged, and is arranged far from the direction of described first side；
Described 4th side is connected with described second side and the 3rd side respectively.
5. the grinding method of a neodymium iron boron product, it is characterised in that comprise the following steps:
A) in orientation pressing process, form marker groove in a bottom surface of class cylinder neodymium iron boron magnetic body pressed compact, had
There is the neodymium iron boron magnetic body pressed compact of marker groove；
The length direction of described marker groove is perpendicular with the magnetizing direction of described orientation compacting；
B) the neodymium iron boron magnetic body pressed compact with marker groove above-mentioned steps obtained, after oversintering, obtains magnet blank；
C) magnet blank above-mentioned steps obtained, after primary grinds, obtains the primary product with marker groove；
D) primary product that above-mentioned steps obtains are placed in the fixture described in Claims 1 to 4 any one carry out grinding adding
After work, obtain neodymium iron boron product.
Grinding method the most according to claim 5, it is characterised in that described in be placed in concretely comprise the following steps:
First primary product are had the locating dowel direction of the corresponding described fixture in bottom surface of marker groove, another end of primary product
First side of the corresponding described fixture in face is placed；Described locating dowel is formed to fix with described marker groove and coordinates；
Then rotational positioning pin, fixing primary product.
Grinding method the most according to claim 5, it is characterised in that described primary grinds as centreless grinding；
Described grinding is processed as molding mill.
Grinding method the most according to claim 5, it is characterised in that the length of described marker groove and described primary product
Basal diameter equal；
The length direction of described marker groove is perpendicular with the magnetizing direction of described orientation compacting；
Described marker groove is semi-circular groove.
Grinding method the most according to claim 5, it is characterised in that the groove inside dimension of described detent and described primary
The overall dimensions of product is matched in clearance.
Grinding method the most according to claim 5, it is characterised in that the maximal clearance of described matched in clearance is 0.10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610757113.5A CN106272060A (en) | 2016-08-29 | 2016-08-29 | A kind of fixture ground for neodymium iron boron product and the grinding method of neodymium iron boron product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610757113.5A CN106272060A (en) | 2016-08-29 | 2016-08-29 | A kind of fixture ground for neodymium iron boron product and the grinding method of neodymium iron boron product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106272060A true CN106272060A (en) | 2017-01-04 |
Family
ID=57674760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610757113.5A Pending CN106272060A (en) | 2016-08-29 | 2016-08-29 | A kind of fixture ground for neodymium iron boron product and the grinding method of neodymium iron boron product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106272060A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114252341A (en) * | 2022-02-28 | 2022-03-29 | 常州玖鼎信息技术有限公司 | Rigidity detection device for new energy automobile parts |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001300842A (en) * | 2000-04-19 | 2001-10-30 | Dowa Mining Co Ltd | Cutting method and device for sintered rare earth magnet alloy |
| CN101447273A (en) * | 2008-09-16 | 2009-06-03 | 宁波菲仕电机技术有限公司 | Method for overcoming magnetic declination of permanent magnet and device thereof |
| CN101728041A (en) * | 2008-10-24 | 2010-06-09 | 北京中科三环高技术股份有限公司 | Manufacturing method of ring-shaped sintered neodymium-iron-boron magnet |
| CN103042211A (en) * | 2012-07-27 | 2013-04-17 | 宁波市鄞州泰源磁业有限公司 | Die for radially-oriented sintered NdFeB magnetic ring and production process thereof |
| CN203672300U (en) * | 2013-11-06 | 2014-06-25 | 临汾华翔纬泰精工机械有限公司 | Tool for detecting eccentric symmetry degree of bent axle of freezer compressor |
| CN105689993A (en) * | 2014-11-26 | 2016-06-22 | 无锡市锡北视听设备厂 | Manufacturing method for efficient column groove milling positioning device |
-
2016
- 2016-08-29 CN CN201610757113.5A patent/CN106272060A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001300842A (en) * | 2000-04-19 | 2001-10-30 | Dowa Mining Co Ltd | Cutting method and device for sintered rare earth magnet alloy |
| CN101447273A (en) * | 2008-09-16 | 2009-06-03 | 宁波菲仕电机技术有限公司 | Method for overcoming magnetic declination of permanent magnet and device thereof |
| CN101728041A (en) * | 2008-10-24 | 2010-06-09 | 北京中科三环高技术股份有限公司 | Manufacturing method of ring-shaped sintered neodymium-iron-boron magnet |
| CN103042211A (en) * | 2012-07-27 | 2013-04-17 | 宁波市鄞州泰源磁业有限公司 | Die for radially-oriented sintered NdFeB magnetic ring and production process thereof |
| CN203672300U (en) * | 2013-11-06 | 2014-06-25 | 临汾华翔纬泰精工机械有限公司 | Tool for detecting eccentric symmetry degree of bent axle of freezer compressor |
| CN105689993A (en) * | 2014-11-26 | 2016-06-22 | 无锡市锡北视听设备厂 | Manufacturing method for efficient column groove milling positioning device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114252341A (en) * | 2022-02-28 | 2022-03-29 | 常州玖鼎信息技术有限公司 | Rigidity detection device for new energy automobile parts |
| CN114252341B (en) * | 2022-02-28 | 2022-04-29 | 常州玖鼎信息技术有限公司 | Rigidity detection device for new energy automobile parts |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20180226190A1 (en) | Single-step Manufacturing of Flux-Directed Permanent Magnet Assemblies | |
| US10600539B2 (en) | Contoured-field magnets | |
| US8937419B2 (en) | Radially anisotropic ring R-TM-B magnet, its production method, die for producing it, and rotor for brushless motor | |
| CN103887028B (en) | A kind of Sintered NdFeB magnet and its manufacture method | |
| EP1830451A1 (en) | Rotor for motor and method for producing the same | |
| US20050093390A1 (en) | Rotor, method of manufacturing the same and rotary machine | |
| CN107275028B (en) | The interface of grain boundary decision neodymium iron boron magnetic body regulates and controls method | |
| CN105513734B (en) | Neodymium iron boron magnetic body weight lucium, neodymium iron boron magnetic body and preparation method thereof | |
| CN112530658B (en) | Integrated magnetizing method for Halbach array magnet assembly | |
| US20160118848A1 (en) | Permanent magnet machine | |
| CN107492429A (en) | A kind of high temperature resistant neodymium iron boron magnetic body and preparation method thereof | |
| CN110444388A (en) | A kind of preparation method of obdurability high-stability neodymium iron boron magnet | |
| JP2003257762A (en) | Ring magnet, manufacturing method therefor, rotor, rotating machine, magnetic field generating apparatus therefor, and ring magnet manufacturing apparatus | |
| Chen et al. | Dependence of the demagnetization behavior on the direction of grain boundary diffusion in sintered Nd-Fe-B magnets | |
| CN106158205A (en) | A kind of preparation method of neodymium iron boron magnetic body | |
| CN102360914B (en) | Method for manufacturing annular magnet with radial magnetic orientation | |
| CN106272060A (en) | A kind of fixture ground for neodymium iron boron product and the grinding method of neodymium iron boron product | |
| CN109671546A (en) | Magnet and its manufacturing method | |
| CN114496462B (en) | Permanent magnet ring assembly and preparation method thereof | |
| CN107026002B (en) | The preparation method of Nd Fe B alloys magnet | |
| CN108133798A (en) | A kind of rare-earth permanent magnet and preparation method thereof | |
| CN205609346U (en) | Magnetism base manufacture equipment | |
| US20180025818A1 (en) | Sintered r-tm-b magnet | |
| CN106601464A (en) | Preparation method for permanent magnet material with low content of heavy rare earth and high coercivity | |
| CN105206416A (en) | Orientation press method of neodymium-iron-boron magnet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |