CN105437389A - Crystal bar cutting-off method and band-sawing machine - Google Patents
Crystal bar cutting-off method and band-sawing machine Download PDFInfo
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- CN105437389A CN105437389A CN201510753885.7A CN201510753885A CN105437389A CN 105437389 A CN105437389 A CN 105437389A CN 201510753885 A CN201510753885 A CN 201510753885A CN 105437389 A CN105437389 A CN 105437389A
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- crystal bar
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
- B28D5/0005—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by breaking, e.g. dicing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
- B28D5/0058—Accessories specially adapted for use with machines for fine working of gems, jewels, crystals, e.g. of semiconductor material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
- B28D5/0058—Accessories specially adapted for use with machines for fine working of gems, jewels, crystals, e.g. of semiconductor material
- B28D5/0082—Accessories specially adapted for use with machines for fine working of gems, jewels, crystals, e.g. of semiconductor material for supporting, holding, feeding, conveying or discharging work
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention provides a crystal bar cutting-off method. A diamond band-sawing blade is adopted for periodically vibrating in order to cut off the crystal bar; in the crystal bar cutting process, the crystal bar periodically vibrates. As the diamond band-sawing blade is adopted for periodically vibrating and cutting the crystal bar, the diamond band-sawing blade periodically makes contact with and breaks away from the crystal bar, abrasion of diamond particles of the band-sawing blade is reduced due to the vibration cutting, too early falling off of the diamond particles is reduced, and therefore the service life of the diamond band-sawing blade is prolonged and the cutting efficiency of the diamond band-sawing blade is improved. Meanwhile, the method is simple and effective, and the cutting-off cost of the crystal bar is greatly reduced. The invention further provides a band-sawing machine. The band-sawing machine comprises the diamond band-sawing blade, a vibration applying device and a workbench used for loading the crystal bar, the vibration applying device is arranged on the workbench and used for driving the workbench to periodically vibrate, and thus the crystal bar loaded on the workbench vibrates periodically. The band-sawing machine is simple in structure.
Description
Technical field
The present invention relates to photovoltaic silicon wafer production technical field, be specifically related to a kind of method for cutting of crystal bar and a kind of band sawing machine.
Background technology
Silicon crystal bar is widely used in area of solar cell, because silicon crystal bar size is larger, need before the use to block, the diamond band saw blade that adopts blocks crystal bar more at present, block in crystal bar process at use diamond band saw blade, due to diamond band saw blade cutting forward position all the time with crystal bar close contact, cause cutting resistance large, the diamond particles electroplated on bands for band is worn seriously.In addition, because temperature is very high when local is cut, electrodeposited coating carcass is softened, thus also easily causes coming off of diamond particles.Due to the too early wearing and tearing of diamond particles with come off, can cause time serious blocking in crystal bar process and cut oblique crystal bar, greatly can waste the crystal bar that original cost is just higher like this.In addition, in working angles, chip is also not easily discharged, and the wearing and tearing of small chip meeting weight belt saw blade carcass, make diamond particles come off too early.To sum up, what existing method of blocking crystal bar can affect diamond band saw blade greatly blocks efficiency and service life, adds production cost, therefore, is necessary the method for cutting providing a kind of new crystal bar.
Summary of the invention
For solving the problem, the invention provides a kind of method for cutting of crystal bar, adopt diamond band saw blade to carry out periodic vibrocutting to crystal bar, extend the service life of diamond band saw blade, improve and block efficiency, the method is simply effective.Present invention also offers a kind of band sawing machine.
First aspect present invention provides a kind of method for cutting of crystal bar, adopts diamond band saw blade to carry out periodic vibrocutting to described crystal bar and described crystal bar is truncated, and in the described crystal bar process of cutting, described crystal bar periodically vibrates.
The method for cutting of the crystal bar that first aspect present invention provides, owing to adopting diamond band saw blade, periodic vibrocutting is carried out to described crystal bar, thus diamond band saw blade is periodically contacted, leave crystal bar, now, space between described diamond band saw blade and described crystal bar and active force also can the changes of generating period, cutting force and the heat in metal cutting of cutting generation occur with impulse form, thus significantly reduce the mean value cutting cutting force and the heat in metal cutting produced.The reduction of cutting force, the wearing and tearing of the diamond particles on bands for band are reduced, and the local or the entirety that also reduce the diamond particles that excessive cutting force causes are broken.The reduction of heat in metal cutting, effectively decreases carcass and softens the too early obscission of the diamond particles caused.In addition, the chip that prior art produces in working angles can affect stock-removing efficiency, and small chip also can the wearing and tearing of weight belt saw blade carcass, and diamond particles is come off too early.The vibrocutting that the present invention adopts periodically contacts, leaves crystal bar due to diamond band saw blade, and cooling water can penetrate into cutting zone better, takes away chip, better salband saw blade.In addition, in the common truncated process of prior art, the impulsive force of diamond band saw blade to crystal bar is larger, easily cause the phenomenons such as crystal bar generation edge breakage, what vibrocutting of the present invention produced is dynamic percussion, is conducive to cutting forward position and cuts the germinating of crackle and become bits, reduce the phenomenon that edge breakage occurs crystal bar in truncated process, obtain and better block effect, greatly reduce the cost that crystal bar blocks.
Preferably, the direction of feed that described crystal bar is parallel to described crystal bar is carried out periodically of reciprocating vibration.
More preferably, the direction adopting vibration bringing device to make described crystal bar be parallel to the feeding of described crystal bar is carried out periodically of reciprocating vibration.
Further preferably, described vibration bringing device is electromagnetic vibrator.
Further preferably, the workbench being mounted with described crystal bar arranges described electromagnetic vibrator, described electromagnetic vibrator drives described workbench to produce periodic vibration, and then the direction of feed making the described crystal bar that described workbench loads be parallel to described crystal bar is carried out periodically of reciprocating vibration.
Preferably, the amplitude of described crystal bar is 50 μm-200 μm.
More preferably, the amplitude of described crystal bar is 100 μm-150 μm.
Further preferably, the amplitude of described crystal bar is 50 μm-100 μm.
Further preferably, the amplitude of described crystal bar is 100 μm-200 μm.
Further preferably, the amplitude of described crystal bar is 150 μm-200 μm.
Further preferably, the amplitude of described crystal bar is 50 μm-150 μm.
Further preferably, the amplitude of described crystal bar is 100 μm-120 μm.
Further preferably, the amplitude of described crystal bar is 120 μm-150 μm.
Further preferably, the amplitude of described crystal bar is 100 μm, 105 μm, 110 μm, 115 μm, 120 μm, 125 μm, 130 μm, 135 μm, 140 μm, 145 μm or 150 μm.
When the amplitude of described crystal bar is 50 μm-200 μm, the discharge and the cooling fluid that are beneficial to chip in truncated process penetrate into cutting front end, take away heat in metal cutting, obtain and block effect better.
Preferably, the vibration frequency of described crystal bar is 50 hertz.
Preferably, described electromagnetic vibrator comprises support, electromagnetic core, resonant spring, vibrating body, coil, hard rubber impact block and adjustment bolt.
Electromagnetic vibrator, has another name called hopper wall vibrator.In prior art, electromagnetic vibrator is generally used for vibrating feed, as electromagnetic vibrator can be arranged on the outside of filler bin bottom reducing place, the dither that electromagnetic vibrator produces, effectively can eliminate blocking that powder causes because of reasons such as interior friction, deliquescence, charged and composition segregations, take doming effect.
The vibration bringing device that the present invention adopts electromagnetic vibrator to block as crystal bar, change the conventional cutting of crystal bar into vibrocutting, can extend the service life of diamond band saw blade on the one hand, can reduce the breakage rate of crystal bar on the other hand, what greatly reduce crystal bar blocks cost.In addition, the vibration bringing device that the present invention adopts electromagnetic vibrator to block as crystal bar, can realize the amplitude larger than vibrators such as pneumatic vibrators, is conducive to improving cutting effect.
The method that first aspect present invention provides makes to change vibrocutting into the conventional cutting of crystal bar in prior art, vibrocutting makes the diamond particles wearing and tearing of bands for band reduce, decrease the generation that diamond particles comes off too early, the service life of diamond band saw blade is extended, the stock-removing efficiency of diamond band saw blade is improved, the method is simply effective simultaneously, and what greatly reduce crystal bar blocks cost.
By method of the present invention, the service life of described diamond band saw blade can extend 1-2 doubly.
Second aspect present invention provides a kind of band sawing machine, comprise diamond band saw blade, vibration bringing device and the workbench for loading crystal bar, described vibration bringing device is arranged on the table for driving described workbench to produce periodic vibration, and then the crystal bar that described workbench is loaded produces periodic vibration.
Preferably, described workbench comprises upper surface and the first adjacent with described upper surface respectively side and the second side, described first side and described second side are oppositely arranged, described crystal bar is arranged on the side of contiguous described first side of described upper surface, and described vibration bringing device is arranged on described second side.
Described vibration bringing device is arranged on the second side, and described vibration bringing device makes the crystal bar that workbench and workbench load produce corresponding periodic vibration to greatest extent.
More preferably, described vibration bringing device is arranged on the geometric center of the second side.
Preferably, described vibration bringing device is electromagnetic vibrator.
More preferably, described electromagnetic vibrator drives described workbench to produce periodic vibration, and then the direction of feed making the described crystal bar that described workbench loads be parallel to described crystal bar is carried out periodically of reciprocating vibration.
Described electromagnetic vibrator drives described workbench to produce periodic vibration, and then the direction of feed making the described crystal bar that described workbench loads be parallel to described crystal bar is carried out periodically of reciprocating vibration.In the described crystal bar process of cutting, diamond band saw blade carries out periodic vibrocutting to described crystal bar, thus diamond band saw blade is periodically contacted, leave crystal bar, now, space between described diamond band saw blade and described crystal bar and active force also can the changes of generating period, cutting force and the heat in metal cutting of cutting generation occur with impulse form, the diamond particles wearing and tearing of bands for band are reduced, decrease the generation that diamond particles comes off too early, the service life of diamond band saw blade is extended, the stock-removing efficiency of diamond band saw blade is improved, reduce the breakage rate of crystal bar simultaneously, greatly reduce and block cost.
Preferably, described crystal bar is fixing on the table by fixture.
The method that described band-saw diamond strip adoption prior art is commonly used is connected with described workbench.
The band sawing machine that second aspect present invention provides is provided with vibration bringing device, described vibration bringing device drives described workbench to produce periodic vibration, and then the crystal bar making described workbench load produces periodic vibration, diamond band saw blade is made to carry out periodic vibrocutting to described crystal bar, extend the service life of diamond band saw blade, improve the stock-removing efficiency of diamond band saw blade, reduce and block cost.In addition, described band sawing machine structure is comparatively simple.
To sum up, beneficial effect of the present invention comprises the following aspects:
(1) method for cutting of a kind of crystal bar provided by the invention, diamond band saw blade is adopted to carry out periodic vibrocutting to described crystal bar, in the described crystal bar process of cutting, described crystal bar periodically vibrates, extend the service life of diamond band saw blade, what improve diamond band saw blade blocks efficiency, and this method for cutting is simply effective simultaneously, greatly reduces and blocks cost.
(2) band sawing machine provided by the invention, structure is simple, and adopt this band sawing machine to block service life that crystal bar extends diamond band saw blade, what improve diamond band saw blade blocks efficiency.
Accompanying drawing explanation
Fig. 1 is left view and the front view of embodiment of the present invention band sawing machine;
Fig. 2 is the structural representation of electromagnetic vibrator of the present invention.
Detailed description of the invention
The following stated is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Fig. 1 is left view (left figure) and the front view (right figure) of embodiment of the present invention band sawing machine.In Fig. 1,1 represents crystal bar, and 2 represent workbench, and 3 represent diamond band saw blade, and 4 represent electromagnetic vibrator.Workbench 2 comprises upper surface 21 and the first adjacent with upper surface respectively side 22 and the second side 23, first side 22 and the second side 23 are oppositely arranged, crystal bar is arranged on the side of contiguous first side 22 of upper surface 21, and vibration bringing device is arranged on the second side 23 place.
As can be seen from Figure 1, the motion that crystal bar 1 is carried out from left to right according to the direction of arrow by workbench 2 realizes feeding, pressure is produced to diamond band saw blade 3, the diamond particles being attached to diamond band saw blade is made to be pressed into the surface of crystal bar, crystal bar 1 is blocked, and electromagnetic vibrator 4 is fixed on workbench 2, electromagnetic vibrator 4 drives workbench 2 to produce the of reciprocating vibration of periodic left and right directions, thus while making crystal bar 1 feeding from left to right of being loaded by workbench 2, produce the Relative Vibration of periodic left and right directions, the diamond particles being attached to diamond band saw blade is made to occur alternately to contact with crystal bar 1, leave, make the change of space between the cutting blade material of diamond band saw blade and crystal bar 1 and active force generating period, thus periodic vibrocutting is carried out to crystal bar 1, final realization is blocked crystal bar 1.
Fig. 2 is the structural representation of electromagnetic vibrator of the present invention.As can be seen from Figure 2, the electromagnetic vibrator that the embodiment of the present invention provides comprises support 1, electromagnetic core 2, resonant spring 3, vibrating body 4, coil 5, hard rubber impact block 6 and adjustment bolt 7.
Embodiment 1:
A method for cutting for crystal bar, comprises the following steps:
(1) on the workbench loading crystal bar, fix an electromagnetic vibrator, open electromagnetic vibrator, control amplitude and the frequency of electromagnetic vibrator, make the amplitude controlling of crystal bar Relative Vibration be 50 μm, the FREQUENCY CONTROL of Relative Vibration is 50Hz; The amplitude of crystal bar Relative Vibration and the frequency of Relative Vibration are monitored by Portable Vibration on-the-spot test, method of testing is: adsorbed on the table by the magnetic suction base that vibration measurement instrument connects, by the sensor on magnetic suction base, the amplitude of crystal bar Relative Vibration and the frequency of Relative Vibration are transmitted to vialog, on-the-spot the reading amplitude of Relative Vibration and the frequency data of Relative Vibration in real time.
(2) start diamond band saw blade running, other blocks technological parameter and remains unchanged according to existing crystal bar method for cutting.In working angles, make the workbench of loading crystal bar remain parallel to its direction of feed carry out periodic left and right Relative Vibration, in working angles, make the change of space between crystal bar and diamond band saw blade and active force generating period, realize diamond band saw blade and periodic vibrocutting is carried out to crystal bar, finally block crystal bar.
Embodiment 2:
A method for cutting for crystal bar, comprises the following steps:
(1) on the workbench loading crystal bar, fix an electromagnetic vibrator, open electromagnetic vibrator, control amplitude and the frequency of electromagnetic vibrator, make the amplitude controlling of crystal bar Relative Vibration be 200 μm, the FREQUENCY CONTROL of Relative Vibration is 50Hz; The amplitude of crystal bar Relative Vibration and the frequency of Relative Vibration are monitored by Portable Vibration on-the-spot test, method of testing is: adsorbed on the table by the magnetic suction base that vibration measurement instrument connects, by the sensor on magnetic suction base, the amplitude of crystal bar Relative Vibration and the frequency of Relative Vibration are transmitted to vialog, on-the-spot the reading amplitude of Relative Vibration and the frequency data of Relative Vibration in real time.
(2) start diamond band saw blade running, other blocks technological parameter and remains unchanged according to existing crystal bar method for cutting.In working angles, make the workbench of loading crystal bar remain parallel to its direction of feed carry out periodic left and right Relative Vibration, in working angles, make the change of space between crystal bar and diamond band saw blade and active force generating period, realize diamond band saw blade and periodic vibrocutting is carried out to crystal bar, finally block crystal bar.
Embodiment 3:
A method for cutting for crystal bar, comprises the following steps:
(1) on the workbench loading crystal bar, fix an electromagnetic vibrator, open electromagnetic vibrator, control amplitude and the frequency of electromagnetic vibrator, make the amplitude controlling of crystal bar Relative Vibration be 100 μm, the FREQUENCY CONTROL of Relative Vibration is 50Hz; The amplitude of crystal bar Relative Vibration and the frequency of Relative Vibration are monitored by Portable Vibration on-the-spot test, method of testing is: adsorbed on the table by the magnetic suction base that vibration measurement instrument connects, by the sensor on magnetic suction base, the amplitude of crystal bar Relative Vibration and the frequency of Relative Vibration are transmitted to vialog, on-the-spot the reading amplitude of Relative Vibration and the frequency data of Relative Vibration in real time.
(2) start diamond band saw blade running, other blocks technological parameter and remains unchanged according to existing crystal bar method for cutting.In working angles, make the workbench of loading crystal bar remain parallel to its direction of feed carry out periodic left and right Relative Vibration, in working angles, make the change of space between crystal bar and diamond band saw blade and active force generating period, realize diamond band saw blade and periodic vibrocutting is carried out to crystal bar, finally block crystal bar.
Embodiment 4:
A method for cutting for crystal bar, comprises the following steps:
(1) on the workbench loading crystal bar, fix an electromagnetic vibrator, open electromagnetic vibrator, control amplitude and the frequency of electromagnetic vibrator, make the amplitude controlling of crystal bar Relative Vibration be 150 μm, the FREQUENCY CONTROL of Relative Vibration is 50Hz; The amplitude of crystal bar Relative Vibration and the frequency of Relative Vibration are monitored by Portable Vibration on-the-spot test, method of testing is: adsorbed on the table by the magnetic suction base that vibration measurement instrument connects, by the sensor on magnetic suction base, the amplitude of crystal bar Relative Vibration and the frequency of Relative Vibration are transmitted to vialog, on-the-spot the reading amplitude of Relative Vibration and the frequency data of Relative Vibration in real time.
(2) start diamond band saw blade running, other blocks technological parameter and remains unchanged according to existing crystal bar method for cutting.In working angles, make the workbench of loading crystal bar remain parallel to its direction of feed carry out periodic left and right Relative Vibration, in working angles, make the change of space between crystal bar and diamond band saw blade and active force generating period, realize diamond band saw blade and periodic vibrocutting is carried out to crystal bar, finally block crystal bar.
Embodiment 5
A method for cutting for crystal bar, comprises the following steps:
Step (1), (2) are with embodiment 1, and difference is that the present embodiment makes the amplitude controlling of crystal bar Relative Vibration be 110 μm.
Embodiment 6
A method for cutting for crystal bar, comprises the following steps:
Step (1), (2) are with embodiment 1, and difference is that the present embodiment makes the amplitude controlling of crystal bar Relative Vibration be 120 μm.
Embodiment 7
A method for cutting for crystal bar, comprises the following steps:
Step (1), (2) are with embodiment 1, and difference is that the present embodiment makes the amplitude controlling of crystal bar Relative Vibration be 130 μm.
Embodiment 8
A method for cutting for crystal bar, comprises the following steps:
Step (1), (2) are with embodiment 1, and difference is that the present embodiment makes the amplitude controlling of crystal bar Relative Vibration be 140 μm.
Embodiment 9
A method for cutting for crystal bar, comprises the following steps:
Step (1), (2) are with embodiment 1, and difference is that the present embodiment makes the amplitude controlling of crystal bar Relative Vibration be 160 μm.
Embodiment 10
A method for cutting for crystal bar, comprises the following steps:
Step (1), (2) are with embodiment 1, and difference is that the present embodiment makes the amplitude controlling of crystal bar Relative Vibration be 170 μm.
Embodiment 11
A method for cutting for crystal bar, comprises the following steps:
Step (1), (2) are with embodiment 1, and difference is that the present embodiment makes the amplitude controlling of crystal bar Relative Vibration be 180 μm.
Embodiment 12
A method for cutting for crystal bar, comprises the following steps:
Step (1), (2) are with embodiment 1, and difference is that the present embodiment makes the amplitude controlling of crystal bar Relative Vibration be 190 μm.
Embodiment 13
A method for cutting for crystal bar, comprises the following steps:
Step (1), (2) are with embodiment 1, and difference is that the present embodiment makes the amplitude controlling of crystal bar Relative Vibration be 60 μm.
Embodiment 14
A method for cutting for crystal bar, comprises the following steps:
Step (1), (2) are with embodiment 1, and difference is that the present embodiment makes the amplitude controlling of crystal bar Relative Vibration be 70 μm.
Embodiment 15
A method for cutting for crystal bar, comprises the following steps:
Step (1), (2) are with embodiment 1, and difference is that the present embodiment makes the amplitude controlling of crystal bar Relative Vibration be 80 μm.
Embodiment 16
A method for cutting for crystal bar, comprises the following steps:
Step (1), (2) are with embodiment 1, and difference is that the present embodiment makes the amplitude controlling of crystal bar Relative Vibration be 90 μm.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a method for cutting for crystal bar, is characterized in that, adopts diamond band saw blade to carry out periodic vibrocutting to described crystal bar and described crystal bar is truncated, and in the described crystal bar process of cutting, described crystal bar periodically vibrates.
2. the method for cutting of crystal bar as claimed in claim 1, it is characterized in that, the direction of feed that described crystal bar is parallel to described crystal bar is carried out periodically of reciprocating vibration.
3. the method for cutting of crystal bar as claimed in claim 2, is characterized in that, the direction adopting vibration bringing device to make described crystal bar be parallel to the feeding of described crystal bar is carried out periodically of reciprocating vibration.
4. the method for cutting of crystal bar as claimed in claim 3, it is characterized in that, described vibration bringing device is electromagnetic vibrator.
5. the method for cutting of crystal bar as claimed in claim 4, it is characterized in that, the workbench being mounted with described crystal bar arranges described electromagnetic vibrator, described electromagnetic vibrator drives described workbench to produce periodic vibration, and then the direction of feed making the described crystal bar that described workbench loads be parallel to described crystal bar is carried out periodically of reciprocating vibration.
6. the method for cutting of crystal bar as claimed in claim 1, it is characterized in that, the amplitude of described crystal bar is 50 μm-200 μm.
7. the method for cutting of crystal bar as claimed in claim 6, it is characterized in that, the amplitude of described crystal bar is 100 μm-150 μm.
8. a band sawing machine, it is characterized in that, comprise diamond band saw blade, vibration bringing device and the workbench for loading crystal bar, described vibration bringing device is arranged on the table for driving described workbench to produce periodic vibration, and then the crystal bar that described workbench is loaded produces periodic vibration.
9. band sawing machine as claimed in claim 8, it is characterized in that, described vibration bringing device is electromagnetic vibrator.
10. band sawing machine as claimed in claim 9, is characterized in that, described electromagnetic vibrator drives described workbench to produce periodic vibration, and then the direction of feed making the described crystal bar that described workbench loads be parallel to described crystal bar is carried out periodically of reciprocating vibration.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510753885.7A CN105437389A (en) | 2015-11-06 | 2015-11-06 | Crystal bar cutting-off method and band-sawing machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510753885.7A CN105437389A (en) | 2015-11-06 | 2015-11-06 | Crystal bar cutting-off method and band-sawing machine |
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| CN105437389A true CN105437389A (en) | 2016-03-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1857878A (en) * | 2006-05-31 | 2006-11-08 | 山东大学 | Ultrasonic scroll saw cutting process for non-conductive hard fragile material |
| CN201525090U (en) * | 2009-06-26 | 2010-07-14 | 张新忠 | Numerical control multi-wire cutting machine for silicon chip of polycrystalline silicon |
| CN202556606U (en) * | 2012-05-21 | 2012-11-28 | 浙江晟辉科技有限公司 | Band saw machine for cutting crystal bars |
| KR20140032747A (en) * | 2012-09-07 | 2014-03-17 | (주) 위솔루션 | Ingot cutting apparatus |
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Application publication date: 20160330 |
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