CN105216127B - Multi-line cutting method and multi-line cutting machine - Google Patents
Multi-line cutting method and multi-line cutting machine Download PDFInfo
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- CN105216127B CN105216127B CN201510539844.8A CN201510539844A CN105216127B CN 105216127 B CN105216127 B CN 105216127B CN 201510539844 A CN201510539844 A CN 201510539844A CN 105216127 B CN105216127 B CN 105216127B
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- 238000005520 cutting process Methods 0.000 title claims abstract description 127
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Abstract
The invention discloses a kind of multi-line cutting method and multi-line cutting machine.The multi-line cutting machine includes first baffle and second baffle, and the first baffle and second baffle at least cover the portions end at the interval of its side respectively.The multi-line cutting method is the method for having used above-mentioned multi-line cutting machine.Methods and apparatus of the present invention can improve covering property and uniformity of the mortar on line of cut, so as to improve product percent of pass；And cutting process, mortar will not form convection current, it is to avoid mortar for the other surfaces of workpiece ablation, so as to improve product condition.
Description
Technical field
The invention belongs to a kind of machining process and its equipment, more particularly to a kind of multi-line cutting method and multi-wire saw
Machine.
Background technology
Referring to accompanying drawing 1, in traditional multi-line cutting method, it is fixed on the lower section of workpiece 4 ' under workbench and savings is set
There is the groove 2 ' of mortar 3 '.Line of cut 1 ' is immersed in mortar 3 ', is walked by the high speed of line of cut 1 ', drive mortar 3 ' to cut
Workpiece 4 '.Out-of-flatness will be become because the high speed walking of line of cut 1 ' can drive the liquid level of mortar 3 ', mortar 3 '.For example, if
A ' regions are line of cut entrance, if B ' regions export for line of cut, so, in the region A ' of line of cut entrance, mortar 3 ' can be slightly
Less than line of cut 1 '；And in the region B ' of line of cut outlet, mortar 3 ' can be slightly above line of cut 1 '.When cutting is carried out, due to
A ' regions are different with the state in B ' regions, and the cutting power of line of cut 1 ' will also produce difference, therefore, the feeding side of line of cut 1 '
To that can not keep level, joint-cutting will produce bad.In addition, being walked by the high speed of line of cut so that the upper strata mortar in groove (contains
Have the mortar of less abrasive particle) follow line of cut to flow out, groove is contained within the stagnant liquid of the mortar as high concentration of a large amount of abrasive particles, used as knot
Really, the mortar containing a large amount of abrasive particles just cuts to workpiece naturally-occurring, the surface of workpiece is produced cut, so as to cause workpiece
Quality decline.
In addition, in above-mentioned cutting mode, workpiece is fixed on the lower section of workbench, it is anti-because the weight of workpiece is big
Only workpiece comes off in cutting process, generally requires strong viscose and is fixed on the table, therefore, complete to cut
After line procedures, degumming need to be carried out, operational sequence is complicated.
To improve above-mentioned problem, in the multi-line cutting method for equally using non-fixed grain, mortar is sprayed by nozzle
Drench above line of cut.Referring to accompanying drawing 2, when being cut to workpiece 4, by nozzle 2 from the top of line of cut 1 spray mortar 3, sand
Abrasive particle in slurry 3 is temporarily attached on line of cut 1 with liquid, and the line of cut 1 walked at a high speed is brought joint-cutting into and cut.Should
Method can equably provide mortar, so as to uneven and product surface deterioration the phenomenon of joint-cutting can be prevented effectively from.However, the method
Another problem is generated, mortar will be quickly lost in due to the effect of the factors such as inertia, gravity, it is difficult to concentrate on line of cut attached
Near region.Therefore, mortar is difficult to form uniform cladding on line of cut, and this will cause cutting efficiency with qualification rate reduction.
For above mentioned problem, solved often through increase mortar spray flux, but, blocking up for joint-cutting and pipeline is so easily caused again
Plug.
The content of the invention
It is an object of the present invention to：A kind of method that cutting efficiency is high and processes bad much less wire cutting is provided.
The technical scheme that the present invention is provided is as follows：
Multi-line cutting method, it uses the parallel cut being wound on line roller and the work under the line of cut
Platform, is fixed with least two workpiece, and move upward by making the workbench on the workbench in spaced mode
Move to cut the workpiece, and before being cut from line of cut top supply mortar, it is characterised in that：Also include
First baffle and second baffle, the first baffle and the second baffle at least cover the interval of its side respectively
Portions end.
In the method for the present invention, the interval between every adjacent two pieces of workpiece is via first baffle and second baffle and workbench
Stop, be respectively formed an interim mortar storage area (hereinafter referred to as temporary space), above-mentioned temporary space is baffle plate, workpiece
The region surrounded jointly with workbench.After the mortar of spray falls into, above-mentioned temporary space is flowed into, the mortar of inflow is full of facing
After time space, the interim shaped mortar pool that mortar can be provided to line of cut is formd.It is stagnant for the mortar pin groove in Fig. 1
The mortar for staying is divided and comes, and will not walk to form convection current with the high speed of line of cut, reduces other tables of mortar for workpiece
The ablation in face, prevents cut from producing, so as to improve product condition.
In the present invention, an interim shaped mortar pool not closed area, its balance is a dynamic balance, on the one hand, from
The mortar sprayed above line of cut constantly flows into temporary space, and on the other hand, the mortar of accumulation is again continuous in temporary space
The part spaced apart end portions outflow not covered from connection gap or by baffle plate.Spray and under mortar due to by temporary space
Obstruction of short duration delay can occur, and the mortar being excessively detained can be taken out of with the walking of line of cut from workpiece both sides, so that shape
Into a kind of dynamic balance.That is, in cutting process, due to the inhibition of each part, the rate of outflow of mortar slows down, and this faces
Always dynamically it is detained a part of mortar in time space, it is right that these delay mortars are collectively forming with the mortar for constantly spraying
In the complete and uniform dynamic cladding of line of cut, so as to improve cutting qualification rate and cutting efficiency.
Further, since the dynamic delay effect of temporary space, the spray flux without increasing mortar, joint-cutting and pipeline are not easy to
Block.
Especially, baffle plate can be regular shape, such as rectangle；Baffle plate is alternatively irregular shape, and such as hedge shape is (referring to attached
Fig. 3) etc.；As long as meeting the interval that its side can be between coating workpieces, and stop that mortar flows out.Therefore, baffle plate can pass through
The regular material of cutting is obtained, and can also be obtained by cutting or splicing irregular material.
When practical application, can before being cut, baffle plate is temporarily fixed on the side of workpiece, and sprays mortar is carried out
Experiment, according to the difference of cutting situation, whether investigation has the speed that mortar flows out from gap or adjustment mortar flows out from gap
Degree.
In the implementation method recommended, the setting of baffle plate is actual also dependent on concentration, the spray rate of mortar etc. of mortar
Operating mode is adjusted.
In the implementation method recommended, the end at the interval is covered each by the first baffle and the second baffle
When, it is fixedly connected on the workpiece side wall of the interval both sides.
In the implementation method recommended, the top surface of the first baffle and the second baffle is above or at least equal to institute
State the top surface of workpiece.So, the mortar for being supplied before cutting can be accumulated in temporary space, so as to ensure that mortar is detained
In the face preparation of workpiece, the mortar to line of cut attachment is supplemented.
In the implementation method recommended, the bottom surface of the first baffle and the second baffle is above the bottom of the workpiece
Face, its bottom surface is then spaced a distance with the workbench.The presence in bottom space can allow mortar abrasive particle to be overflowed from bottom,
The mortar viscosity rate of climb in regulation cutting process, thoroughly prevents flat thin magnet surface from cut occur, it is ensured that cutting effect.
In the implementation method recommended, in the implementation method recommended, the workpiece is that (monocrystal silicon is more for semiconductor piece
Crystal silicon ingot) or Rare-Earth Magnetic iron block or other alloy blocks, metal derby, it is particularly well-suited to Nd-Fe-B systems Rare-Earth Magnetic iron block.
The density of semiconductor piece is 2.34g/cm3, the abrasive grain density in mortar is 3.50g/cm3Left and right, and Nd-Fe-B systems
The density of Rare-Earth Magnetic iron block is 7.5g/cm3Left and right, therefore, the semiconductor powder that semiconductor is produced when cutting is inhaled with mortar abrasive particle
It is attached to be not easy to settle, and on the other hand, the rare-earth magnet powder that Nd-Fe-B systems Rare-Earth Magnetic iron block is produced when cutting
Then easily settled by its drive with after the absorption of mortar abrasive particle.Therefore, two side shields are set, mortar is put aside in interval, it is right
The improvement of semiconductor piece (the less block of density) cutting action is limited, but can significantly improve Nd-Fe-B systems Rare-Earth Magnetic
The effect of iron block (the larger block of density) cutting action, this is because, the presence of mortar can reduce rare-earth magnet powder with
The sedimentation of the hybrid particles of abrasive particle, lifts cutting effect.
Recommend implementation method in, the average crystallite particle diameter of the Nd-Fe-B systems sintered magnet block below 10 μm, and
The powder obtained by the powder method processed joint manufacture at least including SC methods and hydrogen crushing method is obtained.
The product that Nd-Fe-B systems sintered magnet is developed by the 1980's, at the beginning of exploitation when, using ingot casting, ball milling
Fine powder is made with the mode of airflow milling, because the crystallization particle diameter that the ingot casting after ball milling is obtained is thick, there is α-Fe etc. in primary crystal
Segregation, cause to crush difficult, the magnet average grain diameter made by fine powder obtained with above-mentioned ingot casting is above 10 μ in general
M, and the crystal grain of big particle diameter is the fragile tissue of comparing, therefore, cutting performance is preferable.That is, ingot bar manufacture method is obtained
Magnet due to the poor, average grain diameter of crystallization distribution greatly, can be processed rapidly, fraction defective is also less.
Recently, preparation method constantly improves, domestic that quick cooling alloy piece (SC) method was also popularized since 2005, and 2010
Formally start volume production after year.After using SC methods, the crystalline structure in quick cooling alloy is usual homogeneous, small, rich Nd
Mutually also by μm in units of very small and homogeneous distribution is presented.After SC pieces are crushed through suction hydrogen, can be readily available micro-
Small powder, is thus obtained the magnet with homogeneous microtissue of the average crystallite particle diameter below 10 μm.Namely, in SC
The powder that method+hydrogen crushing powder method makes is made after sintered magnet, because the crystal grain of Nd-Fe-B systems sintered magnet is 10
Below μm, the reason for crystal grain distribution is homogeneous, small, the processing characteristics of magnet is very poor, needs the improvement to patterning method badly, and this hair
It is bright exactly for answer Times ' Demand to be done the improvement to multi-line cutting method acquired by result.
In the implementation method recommended, the Nd-Fe-B systems sintered magnet block is sintering of the oxygen content in below 2500ppm
Magnet piece.Oxygen content can form more R in the elevated oxygen level magnet crystal boundary more than 2500ppm2O3Phase, the easy quilt of crystal grain boundary
Destruction, as a result, this kind of processability of magnet is preferably, is easily cut off.And due to the application of hypoxemia industrial technology, can be with
By amount of oxidation control in below 2500ppm, as a result, sintered magnet just becomes hardening, toughness is very strong, it is difficult to be cut off.
Similarly, because the processing characteristics of low oxygen content sintered magnet is very poor, the improvement to patterning method is needed badly, and the present invention is exactly to answer
The improvement that Times ' Demand is done.
In the implementation method recommended, the first baffle and the second baffle are covered each by the described of its side
Whole ends at interval.
In the implementation method recommended, the first baffle and the second baffle respectively forwardly extend interval away from
From its leading section is connected to a third baffle simultaneously；The first baffle and the second baffle extend between one respectively backward
Every distance, thereafter end be connected to a fourth gear plate simultaneously.So, it is possible to resolve mortar distribution in both sides is uneven before and after the workpiece of end
The problem of weighing apparatus, lifts cutting effect.
In the implementation method recommended, the side of the first baffle and the second baffle is equipped with for its side
The draw-in groove that snaps in of the workpiece end.Assembled using dismantledly mode between baffle plate and workpiece, therefore, in cutting completion
Afterwards, baffle plate can be with Reusability.
In the implementation method recommended, the material of the baffle plate is not limited, and can be selected from glass plate, plastic plate, plank or gold
One kind in category plate etc..
In the implementation method recommended, the workpiece is in arrange at equal intervals, the interval between two pieces of adjacent workpiece
Width is 2mm~15mm, and the workpiece is 5mm~150mm in the thickness of cut direction.In this way, may be such that the sand that accumulation is got off
Slurry has optimal distribution, improves cutting effect.
In the implementation method recommended, before cutting, the mortar first is supplied to the interval of the workpiece, use mortar
Viscosities il be 60mPa.s~120mPa.s.
Another object of the present invention is to provide the multi-line cutting machine used in a kind of above-mentioned multinomial cutting method.
The technical scheme that the present invention is provided is as follows：
The multi-line cutting machine includes：Be wound in the parallel cut on line roller, it is below the line of cut, to
The workbench of top movement, and to supply the spray piping of mortar to the line of cut, the top of the workbench is with the row of interval
The mode of row fixes at least two workpiece, it is characterised in that：Also include first baffle and second baffle, the first baffle and institute
State the portions end that second baffle at least covers the interval of its side respectively.
In the implementation method recommended, workpiece is spaced one piece of backing plate and is bonded on workbench.Between workpiece and workbench
Backing plate is added, can thoroughly avoid line of cut from cutting workbench, so as to improve its service life.Especially, the backing plate is selected from
One kind in glass plate, plank or plastic plate etc..
In the implementation method recommended, the quantity of the line roller is 2~4, and each line roller surface is respectively provided with poly- ammonia
Ester extexine, and the extexine has multiple grooves for line of cut motion.
Brief description of the drawings
Fig. 1 is a kind of structural representation of existing multi-line cutting machine.
Fig. 2 is the structural representation of another existing multi-line cutting machine.
Fig. 3 is the schematic diagram of hedge shape baffle plate.
Fig. 4 is the structural representation of the multi-line cutting machine of embodiment 1.
Fig. 5 is the magnet piece of embodiment 4 and the assembling schematic diagram of baffle plate.
Specific embodiment
Multi-line cutting method of the invention and multi-line cutting machine are specifically described below in conjunction with accompanying drawing.
Embodiment 1
Referring to accompanying drawing 3 and accompanying drawing 4, multi-line cutting machine has three line roller 10a, winds several on line roller 10a arranged in parallel
Line of cut 1a.Wherein, the surface of each line roller 10a is respectively provided with polyurethane extexine (not shown), and extexine peripheral hardware is multiple
For the groove (not shown) of line of cut 1a motions.In addition, multi-line cutting machine is also configured with making the line of cut movement of winding in groove
Drive device (not shown).
The average crystallite particle diameter of Nd-Fe-B based magnet blocks 4a is 8 μm, and by including that SC methods, hydrogen crushing method are gentle successively
The powder that the broken powder legal system processed of stream milling makes acquisition is obtained, and the oxygen content of magnet piece 4a is 2400ppm.
Workbench 20a is located at the lower section of line of cut 1a, and it is driven by screw mandrel (not shown) and servomechanism installation (not shown), can
Controllably it is moved upward.One piece of backing plate 21a of glass material is bonded with workbench 20a, thereon with the side of equidistant arrangement
Formula bonds several Nd-Fe-B based magnets block 4a, and interval width between adjacent magnet piece 4a is 2mm, and above-mentioned each interval is equal
Perpendicular to line of cut 1a, magnet piece 4a is 25mm in the thickness of cut direction.In this example, magnet piece 4a to be cut is rectangular
Body, and will be bonded on backing plate 21a with magnet piece 4a side.
Spray piping (figure do not mark) is located at the top of magnet piece 4a, and it has nozzle 2a, can controllably to line of cut 1a and
Magnet piece 4a spray mortars 3a.In this example, it is the mortar of 80mPa.s to use viscosity.
The left and right side of above-mentioned each magnet piece 4a is bonded in the side of the square baffle plate 6a of a metal material, this pair respectively
The top surface of left and right square baffle plate 6a is above the top surface of each magnet piece 4a, and its bottom surface is then bonded in workbench 20a.In this way, should
Side to left and right square baffle plate 6a has been covered each by the whole ends being spaced between each magnet piece 4a of its side, with
Make to be detained at line of cut 1a and there are enough mortar 3a.
Cutting method is specially：1) before cutting, multi-line cutting machine state is checked；2) drive device is opened, makes line of cut
1a is moved back and forth under the tension force of 20~40N, and new line compensation is back and forth done every time, and compensation rate can be adjusted arbitrarily；3) spray is opened
Shower pipe road, nozzle 2a gradually fills the interval between completely each part to line of cut 1a and magnet piece 4a sprays mortar 3a, mortar 3a；
4) control workbench is gradually moved up, until complete cutting, then stop table, pulp piping and line of cut 1a successively
Work.
Qualification rate detection is carried out to the flat thin magnet that cutting is obtained, its statistics is as shown in table 1 (sample size is 200).
The cutting qualification rate statistics of the embodiment 1 of table 1
It can be seen that, via the stop of left and right baffle plate and workbench, the interval between every adjacent two pieces of workpiece is respectively formed one solely
Vertical temporary space, to slow down the loss speed of mortar, it is ensured that enough mortars are stranded in the face preparation of workpiece, and lifting is cut
Cut efficiency and qualification rate.Simultaneously as the mortar being detained is divided coming, will not walk to form convection current with the high speed of line of cut,
Ablation of the mortar for the other surfaces of workpiece is reduced, prevents cut from producing, so as to improve product condition.
Embodiment 2
Embodiment 2 is essentially identical with the multi-line cutting method and multi-line cutting machine of embodiment 1, and its difference is：Ginseng
Examine shown in Fig. 4, the side of plastic material is respectively arranged with draw-in groove, the both ends difference of several piece Nd-Fe-B based magnet blocks 4a
In the draw-in groove of the above-mentioned left and right baffle plate 6a of insertion, so that left and right baffle plate 6a is individually fixed in two sides of each magnet piece 4a,
The top surface of this couple of left and right square baffle plate 6a is above the top surface of each magnet piece 4a, and its bottom surface is then arranged in workbench 20a.Such as
This, the side of this couple of left and right square baffle plate 6a has been covered each by the whole ends being spaced between each magnet piece 4a of its side
Portion, so as to be detained at line of cut 1a have enough mortar 3a.
In this example, the material of backing plate 21a is plastics, and the interval width between magnet piece 4a is 6mm, and magnet piece 4a is in cutting
The thickness in direction is 150mm, and it is the mortar of 90mPa.s that cutting process uses viscosity.The average crystallite of Nd-Fe-B based magnet blocks 4a
Particle diameter is 10 μm, and by including that the powder that the broken powder legal system processed of SC methods, hydrogen crushing method and air-flow milling makes acquisition is obtained successively,
The oxygen content of magnet piece 4a is 1800ppm.
In the present embodiment, complete after a cutting operation, left and right baffle plate 6a can be removed, and repeat to make again
With.
Qualification rate detection is carried out to the flat thin magnet that cutting is obtained, its statistics is as shown in table 2 (sample size is 200).
The cutting qualification rate statistics of the embodiment 2 of table 2
The cutting efficiency of embodiment 2 is low compared with the cutting efficiency of embodiment 1, but is real higher than the cutting efficiency of comparative example
Apply the 85% of example 1.
It can be seen that, embodiment 2 is same as Example 1, via the stop of left and right baffle plate and workbench, per adjacent two pieces of workpiece
Between interval be respectively formed an independent temporary space, to slow down the loss speed of mortar, it is ensured that enough mortars are stranded in
The face preparation of workpiece, lifts cutting efficiency and qualification rate.Simultaneously as the mortar being detained is divided come, will not be with cutting
The high speed of secant walks to form convection current, reduces ablation of the mortar for the other surfaces of workpiece, prevents cut from producing, from
And improve product condition.
Embodiment 3
Embodiment 3 is essentially identical with the multi-line cutting method and multi-line cutting machine of embodiment 1, and its difference is：Gear
Plate 6a is wood quality, and magnet piece 4a to be cut is Sm-Co based magnet blocks, and the interval width between magnet piece 4a is 15mm, magnetic
Iron block is 5mm in the thickness of cut direction, and it is the mortar of 60mPa.s that cutting process uses viscosity.
Qualification rate detection is carried out to the flat thin magnet that cutting is obtained, its statistics is as shown in table 3 (sample size is 200).
The cutting qualification rate statistics of the embodiment 3 of table 3
It can be seen that, embodiment 3 is same as Example 1, via the stop of left and right baffle plate and workbench, per adjacent two pieces of workpiece
Between interval be respectively formed an independent temporary space, to slow down the loss speed of mortar, it is ensured that there is enough mortar to be detained
In the face preparation of workpiece, cutting efficiency and qualification rate are lifted.Simultaneously as the mortar being detained is divided come, Bu Huisui
The high speed of line of cut walks to form convection current, reduces ablation of the mortar for the other surfaces of workpiece, prevents cut from producing,
So as to improve product condition.
Embodiment 4
Embodiment 4 is essentially identical with the multi-line cutting method and multi-line cutting machine of embodiment 1, and its difference is：Ginseng
See accompanying drawing 5, the baffle plate 6a of glass material is bonded in the side of each Nd-Fe-B based magnets block 4a, and its top surface is higher than each magnet piece 4a
Top surface, its bottom surface is then spaced a distance with workbench 20a.That is, having in the exposed region of magnet block 4a bottoms can
The space of sand supplying slurry 3a outflows.
In this example, the interval width between Nd-Fe-B based magnet blocks 4a is 9mm, and magnet piece is in the thickness of cut direction
25mm, it is the mortar of 120mPa.s that cutting process uses viscosity.
The presence in bottom space can allow mortar abrasive particle to be overflowed from bottom, raising speed in the mortar viscosity in regulation cutting process
Degree, thoroughly prevents flat thin magnet surface from cut occur, it is ensured that cutting effect.
Qualification rate detection is carried out to the flat thin magnet that cutting is obtained, its statistics is as shown in table 4 (sample size is 200).
The cutting qualification rate statistics of the embodiment 4 of table 4
It can be seen that, embodiment 4 is same as Example 1, via the stop of left and right baffle plate and workbench, per adjacent two pieces of workpiece
Between interval be respectively formed an independent temporary space, to slow down the loss speed of mortar, it is ensured that there is enough mortar to be detained
In the face preparation of workpiece, cutting efficiency and qualification rate are lifted.Simultaneously as the mortar being detained is divided come, Bu Huisui
The high speed of line of cut walks to form convection current, reduces ablation of the mortar for the other surfaces of workpiece, prevents cut from producing,
So as to improve product condition.
All of interval or baffle plate are not covered only close to when interval setting in baffle plate, and mortar can flow on a small quantity therefrom
Go out, so as to the concentration for preventing the mortar being detained rises, so as to have a negative impact to cutting.
Comparative example 1
Comparative example, its difference are set based on multi-line cutting method substantially the same manner as Example 1 and multi-line cutting machine
It is only that：It is not provided with baffle plate 5a.Qualification rate detection is carried out to the flat thin magnet that cutting is obtained, its statistics (sample as shown in table 5
200) quantity be.
The cutting qualification rate statistics of the comparative example of table 5
The cutting efficiency of comparative example 1 is low compared with the cutting efficiency of embodiment 1, is the 70% of embodiment 1.
Comparative example 2
Comparative example, its difference are set based on multi-line cutting method substantially the same manner as Example 1 and multi-line cutting machine
It is only that：Baffle plate 5a is not provided with, workpiece 4a is semiconductor piece.Qualification rate detection is carried out to the semiconductor chip that cutting is obtained, its system
Count (sample size is 200) as shown in table 6.
The cutting qualification rate statistics of the comparative example of table 6
Comparative example 3
Comparative example, its difference are set based on multi-line cutting method substantially the same manner as Example 1 and multi-line cutting machine
It is only that：Workpiece 4a is semiconductor piece.Qualification rate detection is carried out to the semiconductor chip that cutting is obtained, its statistics such as institute of table 7
Show (sample size is 200).
The cutting qualification rate statistics of the comparative example of table 7
Comparative example 4
Comparative example, its difference are set based on multi-line cutting method substantially the same manner as Example 1 and multi-line cutting machine
It is only that：The average crystallite particle diameter of baffle plate 5a, Nd-Fe-B based magnet block 4a is not provided with for 15 μm, and by including ingot casting, ball successively
The powder that the powder mode processed of mill and airflow milling is obtained is obtained.Qualification rate detection is carried out to the semiconductor chip that cutting is obtained, its statistics
Data are as shown in table 8 (sample size is 200).
The cutting qualification rate statistics of the comparative example of table 8
Comparative example 5
Comparative example, its difference are set based on multi-line cutting method substantially the same manner as Example 1 and multi-line cutting machine
It is only that：The average crystallite particle diameter of baffle plate 5a, Nd-Fe-B based magnet block 4a is not provided with for 18 μm, Nd-Fe-B based magnet blocks 4a's
Oxygen content is 3000ppm.Qualification rate detection is carried out to the semiconductor chip that cutting is obtained, its statistics (sample number as shown in table 8
Measure as 200).
The cutting qualification rate statistics of the comparative example of table 9
Comprehensive conclusion：
Be can see from above-described embodiment 1-4 and comparative example 1-5, the cutting method and cutting machine are improved by simple,
The cutting effect of workpiece is significantly improved, its advantage for combining existing two kinds of cutting modes, raising mortar is on line of cut
Covering property and uniformity, so as to improve qualification rate.In addition, the cutting method and cutting machine are applied widely, can be used for monocrystalline
The cutting of the alloy materials such as silicon rod (ingot), polycrystalline silicon rod (ingot), Rare-Earth Magnetic iron block.
The basic principles, principal features and advantages of the present invention, one of ordinary skill in the art have been shown and described above
It should be appreciated that the mode such as above-described embodiment protection domain that the invention is not limited in any way, all use equivalents is obtained
The technical scheme for obtaining, falls within protection scope of the present invention.
Claims (6)
1. multi-line cutting method, it uses the parallel cut being wound on line roller and the work under the line of cut
Platform, is fixed with least two workpiece, and move upward by making the workbench on the workbench in spaced mode
Move to cut the workpiece, and before being cut from line of cut top supply mortar, it is characterised in that：Also include
First baffle and second baffle, the first baffle and the second baffle are covered each by the portion at the interval of its side
Divide end；The workpiece is Nd-Fe-B systems sintered magnet block；The workpiece is in arrange at equal intervals, two pieces of adjacent workpiece
Between interval width be 2mm~15mm, the workpiece cut direction thickness be 5mm~150mm.
2. multi-line cutting method according to claim 1, it is characterised in that：The first baffle and the second baffle
Top surface is above or at least equal to the top surface of the workpiece.
3. multi-line cutting method according to claim 1, it is characterised in that：The Nd-Fe-B systems sintered magnet block it is flat
Equal crystallization particle diameter manufactures the powder system for obtaining below 10 μm by least including that the powder method processed of SC methods and hydrogen crushing method is combined
.
4. multi-line cutting method according to claim 1, it is characterised in that：The Nd-Fe-B systems sintered magnet block is oxygen
Sintered magnet block of the content in below 2500ppm.
5. the multi-line cutting method according to claim 1 or 2 or 3, it is characterised in that：Before cutting, first to the workpiece
Interval supply the mortar, use the viscosities il of mortar for 60mPa.s~120mPa.s.
6. the multi-line cutting machine for being used in the multi-line cutting method of claim 1, it is characterised in that including：It is wound on line roller
Parallel cut, it is below the line of cut, be used to the workbench being moved upward, and to be supplied to the line of cut
To the spray piping of mortar, at least two workpiece are fixed in the top of the workbench in spaced mode, it is characterised in that：Also
Including first baffle and second baffle, the first baffle and the second baffle are covered each by the interval of its side
Portions end；The workpiece is Nd-Fe-B systems sintered magnet block；The workpiece in arranging at equal intervals, and two pieces adjacent described
Interval width between workpiece is 2mm~15mm, and the workpiece is 5mm~150mm in the thickness of cut direction.
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