CN101306508B - Chamfering device, chamfering method and sintered magnet - Google Patents
Chamfering device, chamfering method and sintered magnet Download PDFInfo
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- CN101306508B CN101306508B CN2008101003444A CN200810100344A CN101306508B CN 101306508 B CN101306508 B CN 101306508B CN 2008101003444 A CN2008101003444 A CN 2008101003444A CN 200810100344 A CN200810100344 A CN 200810100344A CN 101306508 B CN101306508 B CN 101306508B
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 description 7
- 238000002788 crimping Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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Abstract
提供一种既可以延长磨具寿命又可以简单进行倒角的倒角装置和倒角方法。倒角装置(10)包括保持烧结磁铁(100)的保持单元(12)以及具有形成为球状的磨具(50)的磨具单元(14)。保持单元(12)使烧结磁铁(100)以旋转轴S1为中心沿箭头C1方向旋转，磨具单元(14)使磨具(50)以相对于旋转轴S1倾斜90度的旋转轴S2为中心沿箭头C2方向旋转。利用倒角装置(10)，按照磨削部(56a)的周速度大于内周边缘(102)的周速度的方式，使烧结磁铁(100)和磨具(50)分别旋转并使烧结磁铁(100)沿箭头A方向向磨具(50)侧移动。在通过倒角装置(10)进行倒角的烧结磁铁(100a)的倒角面(104)上形成呈大致放射状延伸的短的研磨痕迹。
Provided are a chamfering device and a chamfering method that can prolong the service life of a grinding tool and can perform chamfering simply. The chamfering device (10) includes a holding unit (12) holding a sintered magnet (100), and a grinder unit (14) having a grinder (50) formed into a spherical shape. The holding unit (12) rotates the sintered magnet (100) around the rotation axis S1 in the direction of the arrow C1, and the grinder unit (14) makes the grinder (50) around the rotation axis S2 inclined at 90 degrees relative to the rotation axis S1 Rotate in the direction of arrow C2. Utilize chamfering device (10), make sintered magnet (100) and grinder (50) rotate respectively and make sintered magnet ( 100) move to the grinding tool (50) side along the arrow A direction. Short grinding traces extending substantially radially are formed on a chamfered surface (104) of a sintered magnet (100a) chamfered by a chamfering device (10).
Description
Technical field
The present invention relates to facing attachment, chamfering method and sintered magnet, particularly the circular periphery of sintered magnet is carried out the facing attachment and the chamfering method of chamfering, and periphery is implemented the sintered magnet of chamfering.
Background technology
Generally speaking; On the periphery of the permanent magnet cylindraceous that in motor etc., uses; When surface treatment in order to form easily the surface treatment film, or when motor assemble in order to guide motor shaft and to prevent owing to contacting the fragment that produces with motor shaft, and formation fillet surface.As the device of the periphery of permanent magnet being implemented chamfering, the known facing attachment that the conical grinding tool of use is arranged.In this facing attachment, along the circumferential direction rotate respectively with grinding tool and the taper seat of periphery and the grinding tool of permanent magnet is contacted through the permanent magnet that makes configuration on coaxial and carry out chamfering.But in this facing attachment, because at the privileged site contact permanent magnet of the taper seat of grinding tool, so the taper seat of grinding tool is the wire eccentric wear and decreases, and has the short problem of life-span of grinding tool.
In order to address this problem, a kind of facing attachment is disclosed in patent documentation 1, workpiece cylindraceous and the rotation of columned grinding tool that a rotating shaft is obliquely installed with respect to another rotating shaft, and grinding tool is moved back and forth at direction of principal axis.According to the technology of patent documentation 1, the eccentric wear that can suppress grinding tool decreases, and can also prolong the life-span of grinding tool.
Patent documentation 1: TOHKEMY 2001-179580 communique
But, in the technology of patent documentation 1, must make grinding tool move back and forth and make the grinding tool edge direction vertical make workpiece and grinding tool crimping movably with direction of principal axis at direction of principal axis.Therefore, there is device and control thereof the complicated problems that becomes.
In addition; In the technology of patent documentation 1; Because with the speed greater than the circular velocity of the outer peripheral face of the circular velocity of the periphery of workpiece and grinding tool grinding tool being moved at direction of principal axis structurally is difficult, consider that therefore on the fillet surface of workpiece formation is roughly along the grinding vestige of circumferencial direction.Usually, on the workpiece of chamfering, apply the barreling of removing burr and being used for the rounding bight and handle.For being formed with along the workpiece of the long grinding vestige of circumferencial direction extension fillet surface and near problem of grinding the big otch of vestige generation easily along length thereof when existing barreling to handle on the fillet surface.This problem is used under the situation of the more crisp sintered magnet of rare-earth sintered magnet etc. for example at workpiece be significant.
Summary of the invention
In view of the foregoing, main purpose of the present invention provides a kind of facing attachment and chamfering method that can either prolong service life of grinding tools can carry out chamfering again simply.
Another object of the present invention provides a kind of sintered magnet that is difficult to produce otch.
According to a scheme of the present invention, a kind of facing attachment with sintered magnet of circular periphery is provided, it comprises: have along the grinding tool of the sphere of the whole periphery of periphery; Make sintered magnet and grinding tool be configured to and can rotate respectively, and the dispensing unit that rotating shaft tilts with respect to another rotating shaft; First rotary unit that sintered magnet is along the circumferential direction rotated; Second rotary unit that grinding tool is along the circumferential direction rotated; With according to sphere and the mode that the whole periphery of periphery contacts, make in sintered magnet and the grinding tool at least either party to the mobile unit of the opposing party's side shifting.
According to another aspect of the present invention, provide a kind of the circular periphery of sintered magnet is carried out the chamfering method of chamfering, this method comprises: prepare to have along the operation of the grinding tool of the sphere of the whole periphery of periphery; Make sintered magnet and grinding tool be configured to and can rotate respectively, and the operation that rotating shaft tilts with respect to another rotating shaft; The operation that sintered magnet and grinding tool are along the circumferential direction rotated respectively; With according to sphere and the mode that the whole periphery of periphery contacts, make in sintered magnet and the grinding tool at least either party to the operation of the opposing party's side shifting.
In foregoing invention, dispose sintered magnet and grinding tool according to a rotating shaft with respect to the mode that another rotating shaft tilts, sintered magnet and grinding tool are along the circumferential direction rotated respectively and make the overall circumferential contact of periphery of sphere and the sintered magnet of grinding tool.Like this, through sintered magnet is contacted and respectively rotation along the circumferential direction with grinding tool, can increase the area of grinding part of the sphere of grinding sintered magnet.The sphere that just, can effectively utilize grinding tool carries out chamfering to the periphery of sintered magnet.Therefore, the eccentric wear that can suppress grinding tool decreases, and can also prolong the life-span of grinding tool.In addition, as long as either party also makes sintered magnet and grinding tool crimping to the opposing party's side shifting at least in sintered magnet and the grinding tool owing to making, therefore can carry out chamfering according to the article confrontation sintered magnet of simple and stable.In addition, contact with the whole periphery of the periphery of sintered magnet through the sphere that makes grinding tool, and can carry out chamfering effectively, can shorten process time, and can suppress the required cost of chamfering.Further; Even carrying out chamfering at the device of the part contact grinding tool of the periphery of sintered magnet with uniform stock removal has difficulties; But the sphere through making grinding tool contacts with the whole periphery of the periphery of sintered magnet; Can carry out chamfering according to uniform stock removal, can improve machining accuracy.
Grinding tool is formed have the spherical of the diameter bigger than the diameter of inner peripheral.In this case, the sphere of magnet is contacted with the whole periphery of inner peripheral, can carry out chamfering simply effectively.
In addition, the mode of preferably spending with respect to another rotating shaft inclination 90 according to a rotating shaft disposes sintered magnet and grinding tool.Thus, can utilize the big relatively part of circular velocity on the sphere of grinding tool, can further shorten process time as the grinding part.In addition, can make the area of grinding part maximum, can further prolong the life-span of grinding tool.
The circular velocity of the grinding part of the sphere of further preferred grinding sintered magnet is bigger than the circular velocity of periphery.Thus, can on the fillet surface of sintered magnet, be formed on the grinding vestige of the weak point of the direction extension of intersecting with circumferencial direction.
According to other schemes of the present invention, a kind of sintered magnet with fillet surface of circular periphery chamfering is provided, wherein on fillet surface, form the grinding vestige that is the general radial extension.
In the present invention, through on fillet surface, forming the grinding vestige be the weak point that general radial extends, when barreling is handled fillet surface and near be difficult to form otch, and can reduce to produce the scope of otch.
And in the present invention, " sphere " refers to the part on the surface of ball.
Through making above-mentioned purpose of the present invention clearer to the detailed description of following embodiment with other purpose, characteristics, state and advantage with reference to accompanying drawing.
Description of drawings
Fig. 1 is the side schematic view of expression one embodiment of the present invention.
Fig. 2 is the stereogram of expression sintered magnet, wherein the sintered magnet before (a) expression chamfering, (b) sintered magnet after the expression chamfering.
Fig. 3 representes to make sintered magnet move to the side schematic view of the state of grinding tool side in vertical direction from the state of Fig. 1.
Fig. 4 is the schematic perspective view of sphere state of contact of periphery and the grinding tool of expression sintered magnet.
Fig. 5 is the different sketch map that is used to explain the circular velocity on the sphere of grinding tool.
Fig. 6 is that expression utilizes existing facing attachment to carry out the sketch map of major part of the sintered magnet of chamfering.
Fig. 7 is that expression utilizes facing attachment of the present invention to carry out the sketch map of major part of the sintered magnet of chamfering.
The specific embodiment
Embodiment of the present invention is described with reference to the accompanying drawings.
With reference to Fig. 1, facing attachment 10 is used to carry out chamfering through the circular periphery 102 (with reference to Fig. 2 (a)) to sintered magnet 100, and obtains having the sintered magnet 100a (with reference to Fig. 2 (b)) of fillet surface 104.Sintered magnet 100 cylindraceous for example is the rare-earth sintered magnet of Nd-Fe-B magnet etc., is used for for example motor etc. through sintered magnet 100 being carried out the sintered magnet 100a that chamfering obtains.
As shown in Figure 1, facing attachment 10 comprises holding unit 12 and grinding tool unit 14.Holding unit 12 comprises base station 16, is arranged on the robotic arm 18 on the base station 16 and is arranged on the manipulator 20 on the robotic arm 18.
Rotating part 24 is connected with motor 22a in being arranged on support portion 22, and the driving through motor 22a is that the center is rotated with the rotating shaft of vertically (arrow A direction) extension.The connecting axle 31a that the first arm 26 extends perpendicular to the direction (1 direction of horizontal direction) of the paper of Fig. 1 with the edge can joltily be connected with rotating part 24 as fulcrum.Second arm 28 can joltily be connected with the first arm 26 as fulcrum with the connecting axle 31b parallel with connecting axle 31a.The 3rd arm 30 is can joltily be connected with second arm 28 as fulcrum with the connecting axle 31a connecting axle 31c parallel with 31b.
The 3rd arm 30 comprises drive division 32 that is connected with second arm 28 and the rotating part 34 that can be rotatably set in the column on the drive division 32.One end of rotating part 34 is connected with motors 36 in being arranged on drive division 32.In addition, the other end of rotating part 34 is provided with the manipulator 20 that keeps workpiece 100.Manipulator 20 constitutes 3 pawl types with 3 claws 38.Manipulator 20 is through the outer peripheral face 106 with 3 claw 38 clamping sintered magnets 100, keeps sintered magnet 100 and rotating part 34 on coaxial.
Through this holding unit 12, keep sintered magnet 100 make its end face 108 towards under.Like this, through drive motors 36 under this state, be that the center makes rotating part 34 rotations with the rotating shaft S1 that extends in the arrow A direction (with shown in the chain-dotted line), and then make sintered magnet 100 (arrow C 1 direction :) rotation along the circumferential direction with reference to Fig. 4.
In addition, on the drive division 32 of the 3rd arm 30, form through hole 32a, in through hole 32a, embed the actuator 40 of connecting axle 31c, be configured to be formed with up and down the space.Actuator 40 makes drive division 32 move in the arrow A direction with respect to connecting axle 31c, and makes the 3rd arm 30 and then the sintered magnet 100 that keeps on the manipulator 20 is moved on the arrow A direction.
In this grinding tool unit 14,, as the center, make main shaft axle 52 and then make grinding tool 50 (arrow C 2 directions :) rotation along the circumferential direction with reference to Fig. 4 with the rotating shaft S2 that extends in the arrow B direction (with shown in the chain-dotted line) through drive motors 46.
In this embodiment, first rotary unit comprises motor 36, the second rotary units and comprises motor 46, and mobile unit comprises actuator 40.In addition, dispensing unit comprises robotic arm 18, manipulator 20 and main axle unit 48.
Next, the main operation of facing attachment 10 is described with reference to Fig. 1, Fig. 3 and Fig. 4.
At first, as shown in Figure 1, utilize holding unit 12, with make above the grinding tool 50 end face 108 towards under and make the mode of the center point P of its rotating shaft S1 through grinding tool 50, the sintered magnet 100 that configuration obtains from conveyer belt etc.In other words, with respect to the rotating shaft S2 of grinding tool 50 90 degree that tilt, and the mode of the rotating shaft S1 of sintered magnet 100 through the center point P of grinding tool 50 disposes sintered magnet 100 and grinding tool 50 according to the rotating shaft S1 of sintered magnet 100.
Then, drive motors 36 makes sintered magnet 100 in arrow C 1 direction (with reference to Fig. 4) rotation, and drive motors 46 makes grinding tool 50 rotate in arrow C 2 directions (with reference to Fig. 4) simultaneously.And drive actuator 40 makes sintered magnet 100 move to the arrow A direction and to grinding tool 50 sides (being downside here).Thus, as shown in Figure 3, sintered magnet 100 contacts with grinding tool 50.Afterwards, continue downward side shifting (seeing off), make sintered magnet 100 carry out chamfering with grinding tool 50 crimping and to sintered magnet 100 through making sintered magnet 100.
Because the diameter D (with reference to Fig. 1) of grinding tool 50 is bigger than the diameter d (with reference to Fig. 2 (a)) of the periphery 102 of sintered magnet 100, as shown in Figure 4, the sphere 56 of grinding tool 50 contacts with the whole periphery of the periphery 102 of sintered magnet 100.In addition; Because rotating shaft S1 is with respect to rotating shaft S2 inclination 90 degree; Shown in the double dot dash line among Fig. 3 and Fig. 4, the grinding part 56a of the sphere 56 of grinding sintered magnet 100 enlarges on sphere 56, therefore can effectively utilize the big part of circular velocity as grinding part 56a.
In addition, sintered magnet 100 is rotated according to its circular velocity of any part of the 56a in grinding part mode bigger than the circular velocity of periphery 102 with grinding tool 50.Specifically, with reference to Fig. 5, the 56a in the grinding part, the circular velocity of the central portion 56b that the length of arrow C 2 directions (circumferential length in cross section) is maximum is maximum, and the circular velocity of the end 56c that the length of arrow C 2 directions is minimum is minimum.In facing attachment 10, be the mode of circular velocity more than 50 times of periphery 102 according to the circular velocity that makes end 56c, motor 36 whirl-sintering magnet 100, motor 46 rotating grinding tools 50.
Like this, through sintered magnet 100 being moved and making sintered magnet 100 and grinding tool 50 crimping that sintered magnet 100 and grinding tool 50 are rotated respectively, the periphery 102 of sintered magnet 100 is carried out chamfering.And, if sintered magnet 100 then stops chamfering in the arrow A direction and to grinding tool 50 1 side shifting scheduled volumes (scheduled time).In addition, as stated, because the circular velocity of grinding part 56a is because the position of arrow B direction and difference (with reference to Fig. 5) therefore can make sintered magnet 100 rotate in order equably periphery 102 to be carried out chamfering according to certain speed (grinding speed).Like this,, can suppress on sintered magnet 100, to produce otch in the chamfering, and can stably carry out chamfering through periphery 102 being carried out chamfering according to certain speed.
Afterwards, the sintered magnet 100a (with reference to Fig. 2 (b)) that utilizes holding unit 12 will form fillet surface 104 gives conveyer belt etc.
According to this facing attachment 10, the rotating shaft S1 through making sintered magnet 100 tilts with respect to the rotating shaft S2 of grinding tool 50, can increase the area of the grinding part 56a of sphere 56.Owing to can effectively like this utilize the periphery 102 of 56 pairs of sintered magnets 100 of sphere of grinding tool 50 to carry out chamfering, the eccentric wear that therefore can suppress grinding tool 50 decreases, and can prolong the life-span of grinding tool 50.In addition, as long as, therefore can carry out chamfering according to the article confrontation sintered magnet 100 of simple and stable owing to make sintered magnet 100 in the arrow A direction and to grinding tool 50 1 side shiftings.In addition, contact with the whole periphery of periphery 102, can carry out chamfering effectively, can shorten process time, can suppress the required cost of chamfering through sphere 56.In addition, contact with the whole periphery of periphery 102, can carry out chamfering, can also improve machining accuracy according to uniform stock removal through making sphere 56.
The spherical grinding tool 50 that has the big diameter D (with reference to Fig. 1) of diameter d (with reference to Fig. 2 (a)) than the periphery 102 of sintered magnet 100 through use; Sphere 56 is contacted with the whole periphery of periphery 102, can carry out chamfering simply and effectively.
The rotating shaft S1 through making sintered magnet 100 and the rotating shaft S2 of grinding tool 50 90 degree that tilt can utilize circular velocity is big relatively in the sphere 56 part as grinding part 56a, can further shorten process time.In addition, can make the area of grinding part 56a maximum, can further prolong the life-span of grinding tool 50.
Because the circular velocity of grinding part 56a is bigger than the circular velocity of periphery 102, therefore can on fillet surface 104, be formed on the grinding vestige (grinding hole) of the weak point of the direction extension of intersecting with arrow C 1 direction.Through the circular velocity that makes grinding part 56a is more than 50 times of circular velocity of periphery 102; Can positively on fillet surface 104, form the grinding vestige of the weak point that is the general radial extension positively at general radial direction (arrow E direction :) grinding sintered magnet 100 with reference to Fig. 4.
Below, explain that the facing attachment with prior art carries out the sintered magnet of chamfering and utilizes facing attachment 10 to carry out the comparative example of the sintered magnet of chamfering.And the diameter (internal diameter) to periphery 102 in any one facing attachment carries out chamfering for the sintered magnet 100 of 25mm.
In the facing attachment of prior art, with sintered magnet 100 and cone shape grinding tool be configured in coaxial on, and they are along the circumferential direction rotated and they are contacted, thus periphery 102 is carried out chamfering.
In facing attachment 10, use the spherical grinding tool 50 of diameter as 36mm.In this case, the diameter of the end 56c (with reference to Fig. 5) of grinding part 56a is 25.9mm.In addition, in facing attachment 10, be that the mode of 120rpm makes sintered magnet 100 rotations according to the revolution of periphery 102, be that the mode of 6000rpm makes grinding tool 50 rotations according to the revolution of grinding part 56a.Under this condition; When using diameter * pi * revolution to obtain the circular velocity of central portion 56b and end 56c (with reference to Fig. 5) of circular velocity and grinding part 56a of periphery 102; The circular velocity of periphery 102 is about 0.16m/s; The circular velocity of central portion 56b is about 11.3m/s, and the circular velocity of end 56c is about 8.1m/s.Therefore, the circular velocity of the central portion 56b of grinding part 56a is about 70 times of circular velocity of periphery 102.The circular velocity of the end 56c of grinding part 56a is about 50 times of circular velocity of periphery 102.In other words, in facing attachment 10, the circular velocity of grinding part 56a is set at about chamfering of carrying out more than 50 times of the circular velocity of periphery 102.
Fig. 6 representes to carry out through the facing attachment of prior art the major part of the sintered magnet of chamfering, and Fig. 7 representes to utilize facing attachment 10 to carry out the major part of the sintered magnet of chamfering.
In the facing attachment of prior art, because in peripheral direction grinding periphery, as shown in Figure 6, on fillet surface, be formed on the grinding vestige that peripheral direction extends.On the other hand, in facing attachment 10, because the inclination angle of rotating shaft S1 and rotating shaft S2 is 90 degree, and the circular velocity of grinding part 56a is more a lot of greatly than the circular velocity of periphery 102, so can be at arrow E direction (with reference to Fig. 4) grinding sintered magnet 100 roughly.Thus, as shown in Figure 7, can on fillet surface, form the grinding vestige that general radial is extended.
Generally speaking, to make the bight simultaneously be circular in order to remove deburring, and known for example have through making the container rotation of a plurality of sintered magnets that add abrasive particle and chamfering, on the sintered magnet of chamfering, applies the barreling processing.
Carry out in the sintered magnet of chamfering at facing attachment through prior art; Owing on fillet surface, be formed on the grinding vestige of the length of peripheral direction extension; Therefore when barreling is handled through with other sintered magnet bump easily near the periphery after the chamfering (with reference to Fig. 6) produce otch, enlarge easily along the scope of the grinding vestige otch of length.On the other hand; In the sintered magnet 100a of the chamfering of utilizing facing attachment 10 gold medals; Owing on fillet surface 104, form the grinding vestige of the weak point of general radial extension; Even therefore with other sintered magnet 100a bump, also be difficult near (with reference to Fig. 7) generation otch periphery after the chamfering, can dwindle the scope that produces otch.
Utilize this facing attachment 10 to carry out the sintered magnet 100a of chamfering, through on fillet surface 104, forming the grinding vestige of the weak point that general radial extends, when barreling is handled fillet surface 104 and near be difficult to produce otch, so productivity ratio is good.
In addition, according to the facing attachment of prior art, the exchange frequency of grinding tool is 1 time/day, and according to facing attachment 10, uses that deterioration just takes place grinding tool after 1 month.
And, in the above-described embodiment,,, do not limit the configuration mode of sintered magnet and grinding tool especially as long as a rotating shaft tilts with respect to another rotating shaft although the situation that sintered magnet and grinding tool dispose up and down has been described.For example, can grinding tool be configured in the top of sintered magnet, also can be configured to sintered magnet and grinding tool arranged side by side in the horizontal direction.
In addition, in the above-described embodiment,,, do not limit the shape of grinding tool as long as have along the sphere of the whole periphery of periphery although the situation of using spherical grinding tool has been described.For example, can use from the grinding tool of the shape of the part beyond the spherical grinding tool excision grinding part.
In addition, in the above-described embodiment,, the invention is not restricted to this although the situation that sintered magnet is moved has been described.Can make in sintered magnet and the grinding tool any one for example can make sintered magnet and grinding tool move to another side shifting at least, also can grinding tool be moved.
In addition, the inclination angle of the rotating shaft of sintered magnet and the rotating shaft of grinding tool is not limited to 90 degree, can also be the angle less than 90 degree except 0 degree.
Sintered magnet as chamfering is not limited to rare-earth sintered magnet, also can use sintered magnet arbitrarily such as ferrite sintered magnet.In addition, the shape of sintered magnet is not limited to cylindric, as long as have the arbitrary shape that circular periphery can be flat annular etc.
Although at length explain and illustrate the present invention, this just as simple diagram and an example, should not be construed as the qualification effect, and scope of the present invention should be limited accompanying claims.
Claims (5)
1. facing attachment, it is the facing attachment with sintered magnet of circular periphery, it is characterized in that, comprising:
Have along the grinding tool of the sphere of the whole periphery of said periphery, and said grinding tool forms and has the spherical of the diameter bigger than the diameter of said periphery;
Make said sintered magnet and said grinding tool be configured to and to rotate respectively, and rotating shaft is with respect to tilt 90 ° dispensing unit of another rotating shaft;
First rotary unit that said sintered magnet is along the circumferential direction rotated;
Second rotary unit that said grinding tool is along the circumferential direction rotated; With
According to said sphere and the mode that the whole periphery of said periphery contacts, make in said sintered magnet and the said grinding tool at least either party to the mobile unit of the opposing party's side shifting,
And the circular velocity of the grinding part of the said sphere of the said sintered magnet of grinding is maximum at central portion.
2. facing attachment according to claim 1 is characterized in that:
Said first rotary unit makes said sintered magnet rotation according to the circular velocity of the grinding part of the said sphere of the said sintered magnet of grinding greater than the mode of the circular velocity of said periphery, and said second rotary unit makes said grinding tool rotation.
3. a chamfering method is used for the circular periphery of sintered magnet is carried out chamfering, it is characterized in that, comprising:
Preparation has along the operation of the grinding tool of the sphere of the whole periphery of said periphery, and wherein said grinding tool forms has the spherical of the diameter bigger than the diameter of said periphery;
Make said sintered magnet and said grinding tool be configured to and to rotate respectively, and rotating shaft is with respect to tilt 90 ° operation of another rotating shaft;
The operation that said sintered magnet and said grinding tool are along the circumferential direction rotated respectively; With
According to said sphere and the mode that the whole periphery of said periphery contacts, make in said sintered magnet and the said grinding tool at least either party to the operation of the opposing party's side shifting,
And the circular velocity of the grinding part of the said sphere of the said sintered magnet of grinding is maximum at central portion.
4. chamfering method according to claim 3 is characterized in that:
The circular velocity of the grinding part of the said sphere of the said sintered magnet of grinding is greater than the circular velocity of said periphery.
5. the sintered magnet that uses the described facing attachment of claim 1 to make, the fillet surface that it has circular periphery chamfering is characterized in that:
On said fillet surface, form and be the grinding vestige that general radial is extended.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007-078161 | 2007-03-26 | ||
| JP2007078161A JP5076583B2 (en) | 2007-03-26 | 2007-03-26 | Chamfering device, chamfering method and sintered magnet |
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| Publication Number | Publication Date |
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| CN101306508A CN101306508A (en) | 2008-11-19 |
| CN101306508B true CN101306508B (en) | 2012-01-25 |
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| CN2008101003444A Active CN101306508B (en) | 2007-03-26 | 2008-03-26 | Chamfering device, chamfering method and sintered magnet |
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| JP (1) | JP5076583B2 (en) |
| CN (1) | CN101306508B (en) |
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| CN102059610B (en) * | 2010-07-20 | 2012-09-26 | 越峰电子(广州)有限公司 | Deburring device for blank of annular magnetic product |
| JP5736800B2 (en) * | 2011-01-27 | 2015-06-17 | 日立金属株式会社 | Cylindrical chamfering apparatus and chamfering method |
| JP6069791B2 (en) * | 2013-07-12 | 2017-02-01 | 株式会社 東陽 | Cutting tool and cutting apparatus equipped with this cutting tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301612A (en) * | 1999-12-28 | 2001-07-04 | 住友特殊金属株式会社 | Part chamfering device and part chamfering method |
| CN1770595A (en) * | 2004-09-16 | 2006-05-10 | 三菱电机株式会社 | Ring type sintered magnet |
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| CN1301612A (en) * | 1999-12-28 | 2001-07-04 | 住友特殊金属株式会社 | Part chamfering device and part chamfering method |
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Also Published As
| Publication number | Publication date |
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| JP2008238278A (en) | 2008-10-09 |
| JP5076583B2 (en) | 2012-11-21 |
| CN101306508A (en) | 2008-11-19 |
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