CN209110774U - A kind of magnet system of processing - Google Patents

Abstract

The utility model belongs to magnet manufacturing technology field, more particularly to a kind of magnet system of processing, magnet system of processing, including support device and grinding attachment, the support device is used to support magnet to be ground, the grinding attachment includes grinding wheel for being ground magnet and the first driving motor for driving the grinding wheel revolution, and the grinding wheel includes matrix and the grinding sword that is surrounded in described matrix, and the grinding sword is that the cubic boron nitride containing cubic boron nitride particle material is ground sword.The magnet system of processing of the application, hence it is evident that the service life for increasing grinding wheel not only reduces the frequency of grinding wheel replacement, also improves the stability of magnet grinding；Meanwhile the requirement in process to coolant liquid and cooling device is also reduced, further reduce the manufacturing cost of magnet system of processing；Further, the magnet surface quality processed is preferable, highly polished, and dimensional accuracy is high.

Description

A kind of magnet system of processing

Technical field

The invention belongs to magnet manufacturing technology fields, and in particular to a kind of magnet system of processing.

Background technique

Neodymium iron boron magnetic body is as third generation rare earth permanent-magnetic material, due to its brilliant magnetic property and preferably cost performance, Currently it has been widely used.The appearance of Nd-Fe-B permanent magnetic not only makes motor electroacoustic, instrument and meter, magnetic separation magnetization, medical treatment The equipment such as instrument develop to miniaturization, high frequency, high-performance, low-loss, low noise direction, and rely on energy conservation and environmental protection the characteristics of Its application is set to be extended to new-energy automobile, wind-power electricity generation, the energy saving emerging fields such as household electrical appliances and aerospace from traditional field.

At present in the grinding and cutting mode of rare-earth permanent magnet, mostly use skive as parting tool.? During practical study, inventors have found that such processing method is there is also problematic, it is specific as follows to state:

It is this kind of for rare-earth permanent magnet, especially neodymium iron boron magnetic body to have the characteristics that hard and crisp magnet, due to current grinding wheel Heat resistance and wearability it is poor, even if carrying out thering is coolant liquid to cool down in Grinding Process to it using grinding wheel, sand Wheel, which also will appear, wears rapid phenomenon, and grinding wheel has lower service life, and continues to use and may wear to a degree of sand Wheel processes rare-earth permanent magnet, is also easy to lead to the defect of permanent magnet product.

So needing to design one kind at present is directed to magnet processing, grinding tool service life can be improved, and ensure The magnet processing unit (plant) and processing method of magnet product quality.

Summary of the invention

It is an object of the invention to: in current magnet process, there are grinding wheel service life is short, it is easy to cause magnetic The deficiency of body product defects provides one kind and is directed to magnet processing, can be improved grinding tool service life, and ensure magnet The magnet processing unit (plant) and processing method of product quality.

In order to achieve the above-mentioned object of the invention, the present invention provides following technical schemes:

A kind of magnet system of processing, including support device and grinding attachment, the support device are used to support magnetic to be ground Body, the grinding attachment include the grinding wheel for being ground magnet and the first driving motor for driving the grinding wheel revolution, institute The grinding sword that grinding wheel includes matrix He is surrounded in described matrix is stated, the grinding sword is to contain cubic boron nitride particle material Cubic boron nitride is ground sword.

In the scheme of the application, when in use, magnet to be ground is arranged in support device, and the grinding wheel of grinding attachment exists It is turned round under the driving of first driving motor, and magnet is cut by its grinding sharpening, since grinding sword contains cubic boron nitride particle Material, cubic boron nitride also have the heat resistance for being substantially better than diamond, the grinding as grinding wheel in addition to hardness with higher Edge material, advantage are as follows: significantly increasing the service life of grinding wheel；The extension of grinding wheel service life, opposite skive, Service life can be improved 30~80%, not only reduce the frequency of grinding wheel replacement, also improve the stability of magnet grinding；Together When, the requirement to coolant liquid is also reduced, is the cooling effect that can guarantee in process using spray mode, simultaneously for cold But the coefficient of friction of liquid, defoaming agent whether is added, the spray pressure of coolant liquid does not have higher requirement, in this way, also reducing cold But the requirement of liquid further reduces the manufacturing cost of magnet system of processing；Further, due to cubic boron nitride material height Heat resistance, when grinding, reduce the risk for generating the Grinding defects such as cracking, defect, therefore, the magnet surface processed Quality is preferable, highly polished, and dimensional accuracy is high, and finish is up to 7~8 μm of ▽, and dimensional accuracy is reachable≤0.01 millimeter.

Preferably, the grinding wheel is arranged in the shaft of first driving motor.

Preferably, in the cubic boron nitride grinding sword, the percent by volume of the cubic boron nitride is 20-80%.

Preferably, the cubic boron nitride particle is having a size of 80-325 mesh.

Preferably, there are also other abrasive grains, such as diamond particles, corundum in granules in the grinding sword.

Using the grinding sword of above-mentioned cubic boron nitride particle parameter, it is ensured that cubic boron nitride particle cuts performance to grinding sharpening Enhancing.

Preferably, also contain binder in the grinding sword.

Preferably, the binder is one or more of resinoid bond, vitrified bonding and metal adhesive Combination.Further increase the intensity of grinding sword by binder.

Preferably, described matrix is made of alloy material.Alloy material in application scheme is high-intensitive, high tenacity Alloy material, such as select 60Si2Mn spring steel, 20MoV low-carbon alloy steel etc..

Preferably, the grinding wheel is at least two.

Preferably, the spacing between the grinding wheel is adjustable.

In actually grinding, the spacing by the setting of at least two grinding wheels, and between grinding wheel is adjustable, in this way, can be with Single is ground out multiple magnets, and then improves magnet processing efficiency.

Preferably, the grinding attachment includes the first sliding rail and the second sliding rail, slides and is provided on first sliding rail First slide, second sliding rail are arranged in the first slide, and sliding is provided with second slide on second sliding rail, First driving motor is arranged in the second slide.By sliding first slide and second slide, realizes and driven to first The adjusting of dynamic motor position, and then realize the adjustment to grinding wheel position, further facilitate the grinding of magnet.

Preferably, the glide direction of the first slide is parallel with the grinding wheel rotary axial, the second slide Glide direction and the rotary axial of the grinding wheel are perpendicular.In actual operation, sliding first slide makes grinding wheel close to magnet, so Feeding is realized by sliding second slide afterwards, and then realizes grinding of the grinding wheel to magnet.

Preferably, the linear velocity of the wheel grinding sword is 10-120m/s.In actually research and development and production, invention human hair It is existing, when the linear velocity of grinding wheel is less than 10m/s, in addition to processing efficiency is lower, it is also easy to lead to the inordinate wear of wheel grinding sword； When the linear velocity of grinding wheel is greater than 120m/s, grinding wheel can be abnormal vibration when grinding, and machining accuracy is caused to be deteriorated.

The support device is the rotary shaft of the second driving motor as a preferred method, or is the second driving electricity The rotary shaft that machine is driven by transmission component.

The magnet is ring-type as a preferred method, and is set in the rotary shaft.

The magnet is bulk as a preferred method, and is statically placed in the support device.The scheme of the application In, magnet is bulk, is statically placed in support device, i.e., support device does not drive magnet movement, when carrying out grinding, magnetic Body keeps static condition.

Preferably, the linear velocity of the magnet rotation is 5-30mm/min.

Preferably, the magnet is identical as the direction of rotation of the grinding wheel.

As above-mentioned, when magnet is cyclic annular, rotate magnet, in this way, the relative velocity between magnet and grinding wheel is improved, In turn, grinding efficiency, and the finish of grinding are further improved, and is also unlikely to keep grinding wheel higher and abnormal because of revolving speed Vibration.

Preferably, the cutting speed of the grinding wheel processing magnet is 1~10mm/min.In actually research and development and production, hair Bright people's discovery, if grinding wheel cutting speed is lower than 1mm/min, processing efficiency is lower, increases cost；And if grinding wheel incision speed For degree more than 10mm/min, grinding wheel can also be abnormal abrasion.

Preferably, the magnet system of processing, further includes cooling system, and the cooling system includes nozzle, the nozzle For towards the grinding sword spraying cooling liquid.By the way that cooling device is arranged, grinding wheel and magnet are cooled down, it is ensured that grinding The reliable progress of processing, avoids magnet from causing to aoxidize strongly since temperature raises；Also, due to the application be use cube Boron nitride is ground sword, so, by the way of spraying cooling, for the type of cooling of more traditional grinding, the application Cooling system, for coolant liquid coefficient of friction, defoaming agent whether is added, the spray pressure of coolant liquid does not have higher want It asks.

Preferably, the flow of the nozzle spraying cooling liquid is 5-50L/min.

Preferably, the flow of the nozzle spraying cooling liquid is 15-30 L/min.

In actually research and development and production, inventors have found that being supplied to wheel grinding when coolant rate is lower than 5L/min Coolant liquid is insufficient on sword, will lead to grinding wheel and processes magnet due to abnormal the rising of the insufficient generation temperature of cooling；Work as coolant liquid When flow is greater than 50L/min, the waste of excessive coolant liquid is on the one hand caused, power cost is increased；It on the other hand can be to grinding wheel It impacts larger and brings adverse effect to its rotation, lead to the decline of machining accuracy.

Preferably, the pH value of the coolant liquid is greater than 7 alkaline coolant liquid.The pH value of coolant liquid is greater than 7, in alkalinity, keeps away Exempt from acid solution corrosion magnet.

Preferably, the coolant liquid is using water as main component.Main component using water as coolant liquid is ensuring to cool down While effect, coolant liquid cost can be also reduced, and then reduce the cost of magnet grinding.

Preferably, defoaming agent is added in the coolant liquid.

Preferably, lubricant and defoaming agent are added in the coolant liquid.

As above-mentioned, in coolant liquid, lubricant and/or defoaming agent are set, it is ensured that coolant liquid quality, conducive to coolant liquid Repetition is conducive to and improves the cooling effect of coolant liquid.

Preferably, the diameter of the grinding wheel is 50-150mm, with a thickness of 0.2-1.5mm；

The magnet of the application, when magnet is annular, in cutting-off process, magnet is also to be rotated with certain speed, magnetic Body rotation speed and magnet diameter are positively correlated, that is, magnet diameter is bigger, and suitable rotation speed is bigger, using suitable alloy Magnet ring rotation speed, on the one hand guarantees higher processing efficiency, is on the other hand to guarantee to have compared with high manufacturing accuracy and grinding wheel With longer service life.

A kind of magnet processing method using above-mentioned magnet system of processing, includes the following steps:

Step A: installation steps: grinding wheel being arranged in the shaft of the first driving motor, and disposes a magnet within support On device；

Step B: cooling step: starting cooling system makes coolant liquid spray on the grinding wheel；

Step C: grinding step: the first driving motor of starting turns round grinding wheel, and Mobile support device or grinding attachment Position, make the grinding sword and magnet contact of grinding wheel, realize that grinding wheel obtains magnet pieces to the grinding of magnet.

Due to being using above-mentioned magnet system of processing, using the magnet manufacturing method of the application, hence it is evident that increase grinding wheel Service life, not only reduce grinding wheel replacement frequency, also improve magnet grinding stability；Meanwhile it also reducing pair The requirement of coolant liquid further reduces the manufacturing cost of magnet system of processing；Further, due to cubic boron nitride material High heat resistance when grinding, reduces the risk for generating the Grinding defects such as cracking, defect, therefore, the magnet table processed Face quality is preferable, highly polished, and dimensional accuracy is high.

Preferably, it is additionally provided with step D after the step C: saving: the obtained magnet pieces of step C is placed into antirust agent In aqueous solution.

The magnet pieces completed the process are stored in the aqueous solution that joined antirust agent, avoid by the processing method of the application Antirust agent is added in coolant liquid influences processing effect, due to the stream of coolant liquid when also avoiding placing after product processes It loses, leading to permanent-magnet alloy, there is a situation where oxidation corrosions.Since RE permanent magnetic alloy workpiece remains stored in antirust solution, favorably Protected working before continuing process processing after entering to it.

Preferably, it is additionally provided with step E after the step C: collecting: the magnet abrasive dust that step C is obtained is collected.Magnetic Body abrasive dust is collected, and is focused on or is utilized again.

Preferably, the magnet is hot pressing neodymium iron boron magnetic body.

Compared with prior art, beneficial effects of the present invention:

The magnet system of processing of the application, when in use, magnet to be ground are arranged in support device, the sand of grinding attachment Wheel turns round under the driving of the first driving motor, and cuts magnet by its grinding sharpening, since grinding sword contains cubic boron nitride Granular materials, cubic boron nitride also have the heat resistance for being substantially better than diamond, as grinding wheel in addition to hardness with higher It is ground edge material, advantage is as follows: significantly increasing the service life of grinding wheel；The extension of grinding wheel service life, opposite diamond Grinding wheel, service life can be improved 30~80%, not only reduce the frequency of grinding wheel replacement, also improve the stabilization of magnet grinding Property；Meanwhile requirement to coolant liquid is also reduced, it is the cooling effect that can guarantee in process using spray mode, simultaneously For coolant liquid coefficient of friction, defoaming agent whether is added, the spray pressure of coolant liquid does not have higher requirement, in this way, dropping yet Low coolant liquid requirement, further reduces the manufacturing cost of magnet system of processing；Further, due to cubic boron nitride material Expect high heat resistance, when grinding, reduces the risk for generating the Grinding defects such as cracking, defect, therefore, the magnet processed Surface quality is preferable, highly polished, and dimensional accuracy is high, and finish is up to 7~8 μm of ▽, and dimensional accuracy is reachable≤0.01 millimeter；

The magnet processing method of the application: due to being using above-mentioned magnet system of processing, using the magnet system of the application Make method, hence it is evident that the service life for increasing grinding wheel not only reduces the frequency of grinding wheel replacement, also improves the steady of magnet grinding It is qualitative；Meanwhile requirement to coolant liquid is also reduced, further reduce the manufacturing cost of magnet system of processing；Further , due to the high heat resistance of cubic boron nitride material, when grinding, reduce the wind for generating the Grinding defects such as cracking, defect Danger, therefore, the magnet surface quality processed is preferable, highly polished, and dimensional accuracy is high.

Detailed description of the invention:

Fig. 1 is the structural schematic diagram of the application magnet system of processing；

Fig. 2 is for 30-25-50 rare earth body forever, when using traditional skive and cubic silicon nitride grinding sword grinding wheel Average life comparison；

Fig. 3 is magnet rotation rate and the magnet outer diameter size relationship table of comparisons；

Fig. 4 is the step block diagram of the application processing method,

Indicate in figure: 1- support device, 2- grinding attachment, 3- magnet, 4- grinding wheel, the first driving motor of 5-, 6- second drive Dynamic motor, the first sliding rail of 7-, the second sliding rail of 8-, 9- first slide, 10- second slide, 11- nozzle.

Specific embodiment

Below with reference to test example and specific embodiment, the present invention is described in further detail, but should not understand this It is all that this is belonged to based on the technology that the content of present invention is realized for the scope of the above subject matter of the present invention is limited to the following embodiments The range of invention.

Specific embodiment 1:

A kind of magnet system of processing, as shown in Figure 1, including support device 1 and grinding attachment 2, the use of support device 1 In supporting magnet 3 to be ground, the grinding attachment 2 includes grinding wheel 4 for being ground magnet 3 and for driving the grinding wheel 4 to return The first driving motor 5 turned, the grinding wheel 4 include matrix and the grinding sword that is surrounded in described matrix, the grinding sword for containing There is the cubic boron nitride grinding sword of cubic boron nitride particle material.

In the scheme of the application, when in use, magnet 3 to be ground is arranged in support device 1, the sand of grinding attachment 2 Wheel 4 turns round under the driving of the first driving motor 5, and cuts magnet 3 by its grinding sharpening, since grinding sword contains a cube nitridation Boron particles material, cubic boron nitride also have the heat resistance for being substantially better than diamond, as grinding wheel in addition to hardness with higher 4 grinding edge material, advantage are as follows: significantly increasing the service life of grinding wheel 4；The extension of 4 service life of grinding wheel, such as Fig. 2 Shown in, opposite skive 4, service life can be improved 30~80%, not only reduces the frequency of the replacement of grinding wheel 4, also mentions The stability that high magnet 3 is ground；Meanwhile requirement to coolant liquid is also reduced, it can guarantee using spray mode processed Cooling effect in journey, simultaneously for coolant liquid coefficient of friction, whether be added defoaming agent, the spray pressure of coolant liquid not compared with High requirement further reduces the system of 3 system of processing of magnet in this way, also reducing the requirement of coolant liquid and cooling device Cause this；Further, the heat resistance high due to cubic boron nitride material when grinding, reduces and generates cracking, defect etc. The risk of Grinding defects, therefore, 3 surface quality of magnet processed are preferable, highly polished, and dimensional accuracy is high, and finish is reachable 7~8 μm of ▽, dimensional accuracy is reachable≤and 0.01 millimeter.

As a preferred embodiment, the grinding wheel 4 is arranged in the shaft of first driving motor 5.

As a preferred embodiment, in the cubic boron nitride grinding sword, the volume hundred of the cubic boron nitride Divide than being 20-80%.

As a preferred embodiment, the cubic boron nitride particle is having a size of 80-325 mesh.

As a preferred embodiment, there are also other abrasive grains in the grinding sword, such as diamond particles, corundum Particle etc..

Using the grinding sword of above-mentioned cubic boron nitride particle parameter, it is ensured that cubic boron nitride particle cuts performance to grinding sharpening Enhancing.

As a preferred embodiment, also containing binder in the grinding sword.

As a preferred embodiment, the binder is resinoid bond, vitrified bonding and metal adhesive One or more of combination.Further increase the intensity of grinding sword by binder.

As a preferred embodiment, described matrix is made of alloy material.Alloy material in application scheme For high-intensitive, high tenacity alloy material, such as selection 60Si2Mn spring steel, 20MoV low-carbon alloy steel etc..

As a preferred embodiment, the grinding wheel 4 is at least two.

As a preferred embodiment, the spacing between the grinding wheel 4 is adjustable.

In actually grinding, by the setting of at least two grinding wheels 4, and the spacing between grinding wheel 4 is adjustable, in this way, can Multiple magnet pieces are ground out with single, and then improve 3 processing efficiency of magnet.

As a preferred embodiment, the grinding attachment 2 includes the first sliding rail 7 and the second sliding rail 8, described the Sliding is provided with first slide 9 on one sliding rail 7, and second sliding rail 8 is arranged in the first slide 9, sliding described second Sliding is provided with second slide 10 on rail 8, and first driving motor 5 is arranged in the second slide 10.Pass through sliding the One slide 9 and second slide 10 realize the adjusting to 5 position of the first driving motor, and then adjustment of the realization to 4 position of grinding wheel, Further facilitate the grinding of magnet 3.

As a preferred embodiment, the glide direction of the first slide 9 is equal with 4 rotary axial of grinding wheel Row, the glide direction of the second slide 10 and the rotary axial of the grinding wheel 4 are perpendicular.In actual operation, first is slided Slide 9 makes grinding wheel 4 close to magnet 3, then realizes feeding by sliding second slide 10, and then realizes grinding wheel 4 to the mill of magnet 3 It cuts.

As a preferred embodiment, the linear velocity that the grinding wheel 4 is ground sword is 10-120m/s.In practical research and development In production, inventors have found that in addition to processing efficiency is lower, being also easy to lead to sand when the linear velocity of grinding wheel 4 is less than 10m/s The inordinate wear of 4 grinding sword of wheel；When the linear velocity of grinding wheel 4 is greater than 120m/s, grinding wheel 4 can be abnormal vibration when grinding It is dynamic, cause machining accuracy to be deteriorated.

It as a preferred embodiment, the support device 1 is the rotary shaft of the second driving motor 6, or is the The rotary shaft that two driving motors 6 are driven by transmission component.

As a preferred embodiment, the magnet 3 is ring-type, and it is set in the rotary shaft.

As another preferred embodiment, the magnet 3 is bulk, and is statically placed in the support device 1.Present embodiment Scheme in, magnet 3 be bulk, be statically placed in support device 1, i.e., support device 1 does not drive magnet movement, is being ground When processing, magnet 3 keeps static condition, so set, keeping the stabilization of magnet 3 when being conducive to grinding, improves grinding matter Amount.

As a preferred embodiment, the linear velocity that the magnet 3 rotates is 5-30mm/min.

As a preferred embodiment, the magnet 3 is identical as the direction of rotation of the grinding wheel 4.

As above-mentioned, when magnet 3 is cyclic annular, rotate magnet 3, in this way, improving opposite between magnet 3 and grinding wheel 4 Speed further improves grinding efficiency, and the finish of grinding, and be also unlikely to make grinding wheel 4 because revolving speed is higher in turn And abnormal vibrations.

As a preferred embodiment, the cutting speed that the grinding wheel 4 processes magnet 3 is 1~10mm/min.In reality In border research and development and production, inventors have found that processing efficiency is lower, increases into if 4 cutting speed of grinding wheel is lower than 1mm/min This；And if 4 cutting speed of grinding wheel is more than 10mm/min, grinding wheel 4 can also be abnormal abrasion.

As a preferred embodiment, 3 system of processing of magnet, further includes cooling system, the cooling system Including nozzle 11, the nozzle 11 is used for towards the grinding sword spraying cooling liquid.By the way that cooling device is arranged, to grinding wheel 4 and magnetic Body 3 cools down, it is ensured that the reliable progress of grinding avoids magnet 3 from causing to aoxidize strongly since temperature raises；And And due to the application be use cubic boron nitride be ground sword, so, by the way of spraying cooling, more traditional grinding For the type of cooling of processing, the cooling system of the application, for coolant liquid coefficient of friction, defoaming agent whether is added, it is cooling The spray pressure of liquid does not have higher requirement.

As a preferred embodiment, the flow of the 11 spraying cooling liquid of nozzle is 5-50L/min.

As a preferred embodiment, the flow of the 11 spraying cooling liquid of nozzle is 15-30 L/min.

In actually research and development and production, inventors have found that being supplied to the mill of grinding wheel 4 when coolant rate is lower than 5L/min Coolant liquid deficiency on sword is cut, will lead to grinding wheel 4 and processes the abnormal rising that temperature occurs since cooling is insufficient for magnet 3；When cold But when flow quantity is greater than 50L/min, the waste of excessive coolant liquid is on the one hand caused, power cost is increased；It on the other hand can be right Grinding wheel 4 impacts larger and brings adverse effect to its rotation, leads to the decline of machining accuracy.

As a preferred embodiment, the pH value of the coolant liquid is greater than 7 alkaline coolant liquid.The pH value of coolant liquid Greater than 7, in alkalinity, acid solution is avoided to corrode magnet 3.

As a preferred embodiment, the coolant liquid is using water as main component.Master using water as coolant liquid Ingredient is wanted, while ensuring cooling effect, can also reduce coolant liquid cost, and then reduce the cost of magnet grinding.

As a preferred embodiment, being added with defoaming agent in the coolant liquid.

As a preferred embodiment, being added with lubricant and defoaming agent in the coolant liquid.

As above-mentioned, in coolant liquid, lubricant and/or defoaming agent are set, it is ensured that coolant liquid quality, conducive to coolant liquid Repetition is conducive to and improves the cooling effect of coolant liquid.

As a preferred embodiment, the diameter of the grinding wheel 4 is 50-150mm, with a thickness of 0.2-1.5mm；

The magnet 3 of the application, when magnet 3 is annular, in cutting-off process, magnet 3 is also to be rotated with certain speed, As shown in Figure 3,3 rotation speed of magnet and 3 diameter of magnet are positively correlated, that is, 3 diameter of magnet is bigger, and suitable rotation speed is got over Greatly, using suitable alloy magnet ring rotation speed, on the one hand guarantee higher processing efficiency, be on the other hand to guarantee that there is higher add Work precision and grinding wheel 4 have longer service life.

Specific embodiment 2, as shown in figure 4,

A kind of magnet processing method using above-mentioned magnet system of processing, includes the following steps:

Step A: installation steps: grinding wheel 4 being arranged in the shaft of the first driving motor 5, and the setting of magnet 3 is being propped up On support arrangement 1；

Step B: cooling step: starting cooling system makes coolant liquid spray on the grinding wheel 4；

Step C: grinding step: the first driving motor 5 of starting turns round grinding wheel 4, and Mobile support device 1 or grinding The position of device 2 contacts the grinding sword of grinding wheel 4 with magnet 3, realizes that grinding wheel 4 obtains magnet pieces to the grinding of magnet 3.

Due to being using above-mentioned 3 system of processing of magnet, using 3 manufacturing method of magnet of the application, hence it is evident that increase sand The service life of wheel 4 not only reduces the frequency of the replacement of grinding wheel 4, also improves the stability of the grinding of magnet 3；Meanwhile it also reducing Requirement to coolant liquid, further reduces the manufacturing cost of 3 system of processing of magnet；Further, due to a cube nitridation Boron material high heat resistance when grinding, reduces and generates the risks of the Grinding defects such as cracking, defect and therefore process 3 surface quality of magnet is preferable, highly polished, and dimensional accuracy is high.

As a preferred embodiment, being additionally provided with step D after the step C: saving: the magnetic that step C is obtained Body 3 are placed into antirust agent aqueous solution.

Magnet 3 completed the process are stored in the aqueous solution that joined antirust agent, avoid by the processing method of the application Antirust agent is added in coolant liquid influences processing effect, due to the stream of coolant liquid when also avoiding placing after product processes It loses, leading to permanent-magnet alloy, there is a situation where oxidation corrosions.Since RE permanent magnetic alloy workpiece remains stored in antirust solution, favorably Protected working before continuing process processing after entering to it.

As a preferred embodiment, being additionally provided with step E after the step C: collecting: the magnetic that step C is obtained Body abrasive dust collects.Magnet abrasive dust is collected, and is focused on or is utilized again.

As a preferred embodiment, the magnet 3 is hot pressing neodymium iron boron magnetic body.

Above embodiments are only to illustrate the present invention and not limit the technical scheme described by the invention, although this explanation The present invention has been described in detail referring to above-mentioned each embodiment for book, but the present invention is not limited to above-mentioned specific implementation Mode, therefore any couple of present invention modifies or equivalent replacement；And the technical side of all spirit and scope for not departing from invention Case and its improvement, are intended to be within the scope of the claims of the invention.

Claims (21)

1. a kind of magnet system of processing, it is characterised in that: including grinding attachment, the grinding attachment includes for being ground magnet Grinding wheel, the grinding wheel include matrix and the grinding sword that is surrounded in described matrix, and the grinding sword is contains cubic boron nitride The cubic boron nitride of grain material is ground sword.

2. magnet system of processing according to claim 1, it is characterised in that: it further include support device, the support device It is used to support magnet to be ground, the grinding attachment further includes the first driving motor for driving the grinding wheel revolution.

3. magnet system of processing according to claim 1, it is characterised in that: described in the cubic boron nitride grinding sword The percent by volume of cubic boron nitride is 20-80%.

4. magnet system of processing according to claim 1, it is characterised in that: the cubic boron nitride particle is having a size of 80- 325 mesh.

5. magnet system of processing according to claim 1, it is characterised in that: also contain binder in the grinding sword, institute State the combination that binder is one or more of resinoid bond, vitrified bonding and metal adhesive.

6. magnet system of processing according to claim 1, it is characterised in that: described matrix is made of alloy material.

7. magnet system of processing according to claim 1, it is characterised in that: the grinding wheel is at least two, the grinding wheel Between spacing it is adjustable.

8. magnet system of processing according to claim 2, it is characterised in that: the grinding attachment includes the first sliding rail and the Two sliding rails, sliding is provided with first slide on first sliding rail, and second sliding rail is arranged in the first slide, Sliding is provided with second slide on second sliding rail, and first driving motor is arranged in the second slide.

9. magnet system of processing according to claim 8, it is characterised in that: the glide direction of the first slide with it is described Grinding wheel rotary axial is parallel, and the glide direction of the second slide and the rotary axial of the grinding wheel are perpendicular.

10. magnet system of processing according to claim 8, it is characterised in that: the linear velocity of the wheel grinding sword is 10- 120m/s。

11. magnet system of processing according to claim 8, it is characterised in that: the support device is the second driving motor Rotary shaft, or the rotary shaft driven for the second driving motor by transmission component.

12. magnet system of processing according to claim 11, the magnet is ring-type, and is set in the rotary shaft.

13. magnet system of processing according to claim 8, the magnet is bulk, and is statically placed in the support device.

14. magnet system of processing according to claim 8, it is characterised in that: the linear velocity of the magnet rotation is 5- 30mm/min, the magnet are identical as the direction of rotation of the grinding wheel.

15. magnet system of processing described in -14 any one according to claim 1, it is characterised in that: the grinding wheel processes magnet Cutting speed be 1~10mm/min.

16. magnet system of processing described in -7 any one according to claim 1, it is characterised in that: it further include cooling system, institute Stating cooling system includes nozzle, and the nozzle is used for towards the grinding sword spraying cooling liquid.

17. magnet system of processing according to claim 15, it is characterised in that: the flow of the nozzle spraying cooling liquid is 5-50L/min。

18. magnet system of processing according to claim 16, it is characterised in that: the pH value of the coolant liquid is greater than 7 alkali Property coolant liquid.

19. magnet system of processing according to claim 15, the coolant liquid is using water as main component.

20. magnet system of processing according to claim 15, defoaming agent is added in the coolant liquid.

21. magnet system of processing according to claim 1, lubricant and defoaming agent are added in the coolant liquid.