WO2005037509A1 - ワーク切断装置およびワーク切断方法 - Google Patents
ワーク切断装置およびワーク切断方法 Download PDFInfo
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- WO2005037509A1 WO2005037509A1 PCT/JP2004/015285 JP2004015285W WO2005037509A1 WO 2005037509 A1 WO2005037509 A1 WO 2005037509A1 JP 2004015285 W JP2004015285 W JP 2004015285W WO 2005037509 A1 WO2005037509 A1 WO 2005037509A1
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- work
- moving
- cutting
- weight
- speed
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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
- B28D5/02—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by rotary tools, e.g. drills
- B28D5/022—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by rotary tools, e.g. drills by cutting with discs or wheels
- B28D5/028—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by rotary tools, e.g. drills by cutting with discs or wheels with a ring blade having an inside cutting edge
Definitions
- the present invention relates to a work cutting device and a work cutting method, and more particularly to a work cutting device and a work cutting method for cutting a work using an inner peripheral blade.
- a workpiece is sent to a rotating inner peripheral blade or a rotating inner peripheral blade is rotated relative to the workpiece to perform cutting.
- the cutting resistance generated during the cutting process increases in proportion to the contact area (cutting area) between the work and the cutting edge of the inner peripheral blade and the feed speed (cutting speed) of the work or the inner peripheral blade. If the cutting resistance is increased, the base plate of the thin inner peripheral blade is warped, and the cutting edge is displaced, so that the flatness (cutting accuracy) on the cut surface of the cut product is deteriorated.
- the blade edge is easily displaced at the moment when the workpiece comes into contact with the blade, that is, at the moment when the cutting is started, it is necessary to suppress the excessive feed speed at the moment of starting the cutting.
- Patent Document 1 In order to prevent the cutting accuracy of the work from being deteriorated, in Patent Document 1, the control device obtains a correction amount based on the displacement amount of the blade edge detected by the plurality of displacement detectors, and displaces the inner peripheral blade. There is disclosed a technique for correcting the position of the cutting edge by feeding back to a main shaft displacement driving means to be driven. Further, Patent Document 2 discloses a technique in which a control device obtains a correction amount based on displacement amounts of a blade edge detected by a plurality of sensors, and feeds back the correction amount to an air pressure adjusting device to correct the position of the blade edge.
- Patent Document 1 Japanese Patent Application Laid-Open No. 4-122609
- Patent Document 2 JP-A-5-318460
- a main object of the present invention is to provide a work cutting device and a work cutting device which can configure a work cutting device at a low cost without requiring a complicated control system and can stably and precisely cut a work. It is to provide a cutting method.
- a work cutting apparatus for cutting a work by rotating an inner peripheral blade having a hollow disk-shaped base plate and a cutting edge provided on an inner peripheral edge of the base plate.
- An arrangement section that holds the work and arranges the work at a position where the work can be cut by the inner peripheral blade, a moving section that supports the arrangement section and moves the work toward the inner peripheral blade, and moves the work.
- a weight that is connected to the moving part and pulls the moving part by a falling motion, and that a force that suppresses the movement of the moving part due to the pulling of the weight is applied to the moving part or the weight so that at least the work and the inner peripheral blade are displaced.
- a workpiece cutting device including a speed suppressing unit that suppresses a moving speed of a moving unit when the blade comes into contact with a cutting edge.
- a work cutting method for cutting a work by rotating an inner peripheral blade having a hollow disk-shaped base plate and a cutting edge provided on an inner peripheral edge of the base plate wherein the step of arranging the workpiece by the arranging part at a position where it can be cut by the inner peripheral blade, the step of connecting the weight to the moving part supporting the arranging part, and the moving part being moved by being pulled by the falling weight
- the process of sending the work toward the inner peripheral blade, the force of suppressing the movement of the moving part due to the pulling of the weight, and the cutting edge of the inner peripheral blade that rotates at least with the work by applying the force to the moving part or the weight A workpiece cutting method is provided, which comprises a step of suppressing the moving speed of the moving portion when the workpiece comes into contact with the workpiece, thereby suppressing the feed speed of the workpiece to the inner peripheral blade and starting cutting.
- the moving portion is pulled by the falling weight, whereby the work is moved by the inner peripheral blade blur. Sent to the host. Then, by applying a force to the moving part or the weight to suppress the movement of the moving part due to the pulling of the weight, in other words, the moving part has a force in the opposite direction to the moving direction or the weight has a direction opposite to the falling direction.
- a work cutting device can be configured at low cost without requiring a complicated control system.
- the speed suppressing means includes a guide rod provided with a thread groove, a driving means for rotating the guide rod, and a suppressing plate into which the guide rod is screwed and which is moved by rotation of the guide rod.
- the restraint plate is located at a position where it prevents movement of the moving part due to the pulling of the weight, and the restraint plate moves in the same direction as the moving part and in contact with the moving part at a speed lower than the moving speed of the moving part caused by the pulling of the weight.
- the moving speed of the moving unit is suppressed.
- the moving speed of the moving unit can be suppressed only by making the moving speed of the restraint plate slower than the moving speed of the moving unit, and a workpiece cutting device can be configured at low cost without requiring a complicated control system. it can.
- the speed control unit includes a resistance member that requires a certain force for movement.
- the resistance member is disposed at a position where the movement of the moving portion due to the pulling of the weight is obstructed, and the moving speed of the moving portion is suppressed by moving the moving portion while pressing the resistance member.
- the work cutting device can be configured at a lower cost than when it is not necessary to control the speed suppressing means.
- the speed suppressing means includes a supporting part for supporting the weight, and a descending means for lowering the supporting part.
- the lowering means lowers the supporting portion for supporting the weight at a speed that suppresses the falling of the weight, and reduces the force pulling the moving portion of the weight, thereby suppressing the moving speed of the moving portion.
- the work cutting device can be configured at low cost without the need for a complicated control system that only requires setting the descending speed of the supporting part so that the falling speed of the weight becomes slower than that without the supporting part. can do.
- a water-soluble coolant diluted with water is used to cut a workpiece
- a water-soluble coolant is used as a main component, so that the load on the environment is lower than that of an oil-based coolant. Is small, but it is difficult to supply to the inner peripheral blade due to foaming and high surface tension.
- the cutting edge of the inner peripheral blade is an abrasive layer layer in which gunshots are electroplated on the inner peripheral edge of a hollow disk-shaped base plate, the density of abrasive particles is high (the chip pocket is small) and It is difficult to supply the coolant.
- the inner peripheral blade since the cutting edge is oriented in the direction of the center of the circle, the co-rotating flow generated by the centrifugal force is firmly attached to the cutting edge, and it is difficult to supply coolant to the cutting edge. . For this reason, when cutting hard workpieces, the inner peripheral blade may seize due to insufficient coolant supply and may even chip. It is preferable to use a water-soluble coolant obtained by diluting a water-soluble coolant stock solution containing 5 wt% to 20 wt% of a surfactant and 10 wt% to 40 wt% of a lubricant with water. In this case, coolant can be appropriately supplied to the cutting edge of the inner peripheral blade, and seizure and chipping can be prevented. In addition, the wear of the cutting edge can be optimized, and the life of the inner peripheral blade for performing high-precision cutting can be extended.
- FIG. 1 is a perspective view schematically showing an embodiment of the present invention.
- FIG. 2 (a) is a schematic front view illustrating an embodiment of the present invention
- FIG. 2 (b) is a schematic side view thereof.
- FIG. 3 (a) is an illustrative view showing a fixed state of an inner peripheral blade, (b) is a partial perspective view showing a discharge port of a coolant nozzle, and (c) is a view near a discharge port of a coolant nozzle.
- FIG. 4 is an illustrative view showing one example of a work cut by a work cutting device
- Fig. 6 is an illustrative view showing the operation of the speed suppressing means.
- FIG. 7 is an illustrative view showing another example of the work cut by the work cutting device.
- ⁇ 8 These are the experimental results showing the relationship between the surface tension of the coolant and the cutting accuracy.
- (A) is a table and (b) is a graph.
- FIG. 10 Experimental results showing the relationship between coolant discharge pressure and cutting accuracy, where (a) is a table and (b) is a graph.
- FIG. 11 is an illustrative side view showing an outline of another embodiment of the present invention.
- FIG. 12 (a) is a schematic front view schematically showing another embodiment of the present invention
- FIG. 12 (b) is a schematic side view thereof.
- a work cutting device 10 has an inner peripheral blade 32 (described later) arranged vertically, and a work 66 ( This is an inner peripheral blade cutting device of the type that sends and cuts (described later).
- the work cutting device 10 includes a bed 12. Rotation support 14 is provided on bed 12
- a rotary shaft 18 fixed to the chuck body 16 is inserted into the rotary support portion 14, and the rotary shaft
- a pulley 24 is attached to the rotation shaft 18 in the rotation support portion 14.
- a rotating shaft motor 26 is disposed in the bed 12, and a motor pulley 28 is attached to a rotating shaft of the rotating shaft motor 26.
- the pulley 24 and the motor pulley 28 are connected by a belt 30.
- the outer peripheral edge of the inner peripheral blade 32 is sandwiched and fixed between the end surface of the chuck body 16 and the end surface of the tension head 34.
- a fixing bolt 38 is screwed into a plurality of bolt holes 36 provided on the outer peripheral side of the tension head 34, and the leading end thereof is inserted into a through hole 40 provided on the outer peripheral edge of the inner peripheral blade 32. Pass through. Then, the tip of the fixing bolt 38 is screwed into a bolt hole 42 provided in the chuck body 16 and tightened, whereby the inner peripheral blade 32 is fixed. Press bolts 46 are screwed into a plurality of press bolt holes 44 provided on the inner peripheral side of the tension head 34 and narrowed down. This allows the inner peripheral blade 32 to be pulled up in the outer peripheral direction.
- the inner peripheral blade 32 is, for example, a base plate 32a which is a hollow disk-shaped stainless steel alloy having a thickness of about 0.3 mm, and a diamond cannonball is formed on the inner peripheral edge of the base plate 32a by a metal such as nickel liquid.
- the blade is a thin blade including a cutting edge 32b of an abrasive layer formed by electroplating using a plating solution.
- a coolant nozzle 48 is arranged near the cutting edge 32b.
- the coolant nozzle 48 continuously discharges a coolant sent from a coolant supply unit (not shown) from a discharge port 48a and supplies the coolant to the cutting edge 32b.
- the discharge port 48a has a shape in which the tip of the coolant nozzle 48 is broken. Coolant is discharged from the discharge port 48a so as to surround the cutting edge 32b.
- the supplied coolant is adjusted by a temperature adjustment unit (not shown) so that the temperature is 22 ° C to 35 ° C at the time of discharge.
- the discharge pressure is adjusted to 0.05MPa-0.2MPa. If it is less than 0.05MPa, the cutting edge 32b will burn. On the other hand, if it exceeds 0.2 MPa, the cutting accuracy of the cutting edge 32b decreases.
- the coolant supplied to the cutting edge 32b is obtained by adding a water-soluble coolant stock solution of about 2wt% -1 ( ⁇ %) to water.
- the main composition of this coolant stock solution is disclosed in Japanese Unexamined Patent Publication (KOKAI). 2003-82335 This is the description of the coolant.
- This coolant solution contains 5wt% -20wt% of a surfactant with 10-20 carbon atoms such as carboxylic acid to increase the permeability to the cutting edge 32b. In order to improve lubricity with the work 66 (described later), it contains 10% -40% by weight of a lubricant with a molecular weight of 76-10000 using glycols etc.
- WS # 252 D (Manufactured by Shiguchi Chemical Industry Co., Ltd.).
- the coolant is adjusted so that the surface tension at 25 ° C is 20mNZm-40mNZm. If the diameter is less than 20 mNZm, slipping of the munitions occurs between the munitions and the workpiece 66 during cutting, and effective cutting cannot be performed. On the other hand, if it exceeds 40 mNZm, cutting resistance increases due to insufficient supply of coolant between the abrasive grains and the work 66.
- a guide groove 50 is formed on the bed 12, and a guide hole 52 that opens the upper surface of the bed 12 is formed in the guide groove 50 at the center in the longitudinal direction of the guide groove 50. It is formed.
- the moving portion 53 is arranged in the guide groove 50.
- the moving part 53 is provided on a slide base 54 slidable in the longitudinal direction on the guide groove 50, and is provided on a bottom surface of the slide base 54 and has a guide hole 52. And a support member 58 erected on the slide table 54.
- the arrangement section 59 is supported by such a moving section 53.
- the disposition portion 59 includes an indexing mechanism 60 supported by the support member 58, a fixing jig 62 supported by the indexing mechanism 60, and a sticking plate 64 made of carbon or the like provided on a main surface of the fixing jig 62.
- the work 66 is fixed to the main surface of the attaching plate 64.
- the indexing mechanism 60 moves the fixing jig 62 in a direction (arrow X direction) orthogonal to the inner peripheral blade 32 and arranges it near the center of the inner peripheral blade 32 so that the work 66 can be cut. That is, the thickness of the product obtained by cutting the work 66 by the indexing mechanism 60 can be adjusted.
- the indexing mechanism 60 may be driven by a signal input from a control unit (not shown), or may be manually driven by attaching a nozzle or the like, for example.
- a linear member 68 such as a piano wire or a steel wire, which also has a force
- a weight 70 is connected to the other end of the linear member 68.
- a linear member 68 connecting the slide table 54 and the weight 70 is guided by a guide roller 74 supported by a roller support 72.
- the slide table 54 is pulled by the falling weight 70, slides in the guide groove 50 and moves in the direction of arrow B (see FIG. 2 (b)), and moves the work 66 near the center of the inner peripheral blade 32 in the outer peripheral direction.
- an iron lump having a weight 3 to 6 times the weight of the work 66 is used.
- the weight of the work 66 is 300g-400g, 1.6kg of iron lump is used for the weight 70.
- the speed suppressing means 76 includes a guide member 78 having a U-shaped cross section, a guide rod 80 having a thread formed therein, a control plate 82 into which the guide rod 80 is screwed and slides on the guide member 78, and one end of the guide member 78. And a rewind stop 86 connected to the other end of the guide member 78, and a motor 88 connected to the guide rod 80.
- the feed stopper 84 rotatably holds the guide rod 80, and the guide rod 80 passes through the rewind stopper 86.
- the guide member 78, the feed stopper 84, and the winding The return stopper 86 is fixed, the feed stopper 84 regulates the front end position of the sliding suppressing plate 82, and the rewind stopper 86 regulates the rear end position of the protrusion 56.
- the guide rod 80 is driven to rotate at a constant speed by a connected motor 88, and moves the suppressing plate 82 in the direction of the feed stopper 84 (direction of arrow B) or the direction of the rewind stopper 86 (direction opposite to arrow B). At this time, the suppressing plate 82 slides on the guide member 78 without rotating with the rotation of the guide rod 80.
- the rotation speed and the rotation direction of the motor 88 can be changed by a control unit (not shown).
- a rare earth sintered alloy is used as the work 66 to be cut by the work cutting device 10 configured as described above.
- Fig. 4 shows an example of the shape of the work 66, which is a rare earth sintered alloy.
- a work 66 is formed by integrally arranging a rectangular parallelepiped rare earth sintered alloy with an adhesive or the like in order to improve manufacturing efficiency, and arranging portion 59 near the center of inner peripheral blade 32. Is formed in a rectangular parallelepiped of an appropriate size within a limit that can be arranged. A product obtained by cutting the work 66 having such a shape is used, for example, as a magnet for driving an optical pickup lens.
- the work 66 of the rare earth sintered alloy having the shape shown in FIG. 4 is arranged near the center of the inner peripheral blade 32 by the arrangement portion 59. .
- a weight 70 which is three to six times the weight of the work 66, is connected to the slide table 54 by a linear member 68.
- the protrusion 56 is sandwiched between the restraining plate 82 and the rewind stopper 86, so that the slide table 54 cannot move.
- the movement speed of the restraint plate 82 is determined by the movement speed of the slide table 54 pulled by the fall of the weight 70.
- the retarder 82 and the protrusion 56 which are slower than that, move in the direction of the feed stopper 84 while making contact with the protrusion 56.
- the slide table 54 moves in the direction of arrow B while suppressing its moving speed by the suppressing plate 82, and feeds the work 66 toward the rotating inner peripheral blade 32, as shown in FIG. 5 (b).
- the cutting is started by bringing the workpiece 66 into contact with the cutting edge 32b.
- the cutting edge 32b is vibrated in the front-rear direction, so that the cutting resistance at the cutting portion is reduced, and the cutting edge is reduced. Even when the thickness is small, the cutting edge 32b bends. Also, the cutting accuracy is improved because the cutting resistance is reduced.
- the cutting edge 32b reaches the attaching plate 64.
- the cutting resistance of the sticking plate 64 made of carbon is smaller than the cutting resistance of the work 66 which is a rare earth sintered alloy, and the cutting area of the work 66 becomes smaller. Feed speed increases.
- the rotation direction of the motor 88 is reversed to drive the motor, so that the suppression plate 82 moves in the direction of the rewind stopper 86 while pressing the protrusion 56, and the state shown in FIG. Return.
- the return operation of the protrusion 56 and the suppression plate 82 is performed, for example, by using a return button. This may be done by pressing a button, or it may be done automatically by attaching a sensor to the feed stopper 84.
- the work 66 and the inner peripheral blade 32 can be brought into contact with each other at an optimum feed speed of the work 66. Therefore, even if the inner peripheral blade 32 has a small thickness, the displacement of the blade edge 32b immediately after the start of cutting can be reduced, and even if the work 66 is a hard and brittle rare earth sintered alloy, chipping is stable.
- the cutting process can be started with high precision. Further, the moving speed of the moving section 53 can be suppressed only by making the moving speed of the restraint plate 82 slower than the moving speed of the slide table 54, and the work cutting device 10 is configured at a low cost without requiring a complicated control system. Therefore, the production cost of the product obtained by cutting can be reduced.
- the cutting edge of the inner peripheral blade 32 can be used. Coolant can be appropriately supplied to 32b, and seizure and chipping can be prevented. Further, the wear of the cutting edge 32b can be optimized, and the life of the inner peripheral blade 32 for performing high-precision cutting can be extended.
- the water-soluble coolant can be used more effectively by adjusting the temperature to 22 ° C. to 35 ° C. during supply (discharge) to the inner peripheral blade 32.
- the coolant is adjusted so that the surface tension at 25 ° C. becomes 20 mNZm to 40 mNZm.
- the discharge pressure is adjusted to 0.05 MPa to 0.2 MPa.
- seizure and deformation of the cutting edge 32b due to insufficient supply of coolant to the cutting edge 32b are suppressed, and cutting can be performed with high accuracy.
- the shape of the work 66 formed by integrating a rectangular parallelepiped rare earth sintered alloy is not limited to that shown in FIG. If the cross-sectional area is large, it may be cut alone.
- the rare earth sintered alloy having a substantially trapezoidal cross section whose upper side and bottom side are arcs may be used as the workpiece 66 and cut.
- a product obtained by cutting the work 66 having such a shape is used, for example, as a magnet for driving a VCM (voice coil motor).
- the work 66 having the shape shown in FIG. 7 (a) may be integrated with an adhesive or the like in order to improve the manufacturing efficiency.
- the shape of the work 66 formed by integrating the rare earth sintered alloy having the shape shown in FIG. 7A is not limited to that shown in FIG. 7B.
- the adhesives used here include CaCO (calcium carbonate), collagen (paste), and te.
- the columnar rare earth sintered alloy is integrated with an adhesive or the like, and the work 66 is formed into a shape as shown in FIGS. 7 (c) to 7 (e). It may be configured and cut.
- a product obtained by cutting the rare earth sintered alloy work 66 having such a shape is used, for example, as a magnet for driving an optical pickup lens.
- the shape of the work 66 formed by integrating the columnar rare earth sintered alloy is not limited to those shown in FIGS. 7 (c) to 7 (e). In addition, if the cross-sectional area is large, it may be cut alone. Further, as shown in FIG. 7 (f), a rare earth sintered alloy having a cylindrical shape may be used as the work 66, and cutting may be performed.
- the cut area is maximized immediately after the start of cutting. Then, as the cutting progresses, the cutting area force decreases sharply. At this time, the protruding portion 56 and the suppression plate 82 do not separate from each other, and there is a possibility that the cutting process is performed while the moving speed of the slide table 54 is suppressed. Alternatively, there is a possibility that the protruding portion 56 and the restraining plate 82 which are separated from each other come into contact again during the cutting process, and the moving speed of the slide table 54 is suppressed again.
- the rotation speed of the motor 88 may be increased via the control unit after the contact between the workpiece 66 and the cutting edge 32b to increase the moving speed of the suppression plate 82.
- a load sensor may be attached to the fixing jig 62 to automatically increase the rotation speed of the motor 88 and increase the moving speed of the suppression plate 82 when a load equal to or greater than a predetermined value is detected.
- Table 1 shows the addition conditions.
- the experiment was performed under the same processing conditions as the work cutting device 10 and the work cutting device without the speed suppressing means 76.
- the base plate with a thickness of 0.1 mm was used.
- An inner peripheral edge with an artificial edge with an average abrasive grain size of 60 ⁇ m as an abrasive material, which is electroplated with a nickel liquid on the inner peripheral edge of 32a, and a cutting edge 32b consisting of a 0.26 mm thick abrasive layer Blade 32 was used.
- As the material of the base plate 32a a stainless steel alloy having super tensile strength was used.
- the rotation speed (peripheral speed) of the inner peripheral blade 32 was 113 OmZ min.
- the work 66 was made of a rare earth sintered alloy having a sectional area (end face area) of about 7.6 cm 2 and a shape shown in FIG. 7A, which is called a VCM block.
- a rare earth sintered alloy an Nd-Fe-B based sintered alloy containing a large amount of Fe, which was subjected to liquid phase sintering, was used.
- Nd-Fe-B sintered alloy is a hard-to-work material with particularly hard and brittle properties among rare earth sintered alloys.
- the coolant used was WS # 252 manufactured by Ushiro Chemical Industry Co., Ltd. diluted with water by 10 wt%. The coolant was adjusted to 25 ° C at the time of discharge, and was supplied to the cutting edge 32b at a discharge rate of 1. OLZ min.
- the workpiece cutting device 10 has 3.404 mm, and cutting can be performed with high accuracy close to the target cutting thickness (3.4 mm).
- the thickness variation of the obtained product is 0.014 mm, whereas in the work cutting apparatus 10, it is 0.0005 mm.
- the thickness variation was reduced to about one third.
- the "thickness average” is a value obtained by measuring the thicknesses of all the products obtained by cutting, summing up, and averaging.
- "thickness variation" in this experimental example and the following experimental example means that for all products obtained by cutting, a thickness error with respect to a target cut thickness (for example, 3.4 mm in this experimental example) is detected. It is the summed and averaged value.
- a water-soluble coolant obtained by diluting a water-soluble coolant stock solution containing 10% by weight of a carboxylic acid with a surfactant and 20% by weight of a lubricant with ethylene glycol by 10 times with water was used.
- a water-soluble coolant obtained by diluting a water-soluble coolant stock solution containing a surfactant of 4% by weight with carboxylic acid and a lubricant of 8 % by weight with ethylene glycol by 10 times with water was used.
- the temperature of coolant 1 and coolant 2 was adjusted to 25 ° C at the time of discharge.
- Table 3 shows the processing conditions.
- a base plate 32a with a thickness of 0.1 mm and artificial diamond with an average abrasive particle size of 60 ⁇ m as an abrasive material were used on the inner periphery of the base plate 32a using nickel liquid. Electric An inner peripheral blade 32 including a 0.26 mm thick blade edge 32b having a munition layer strength strength formed by being noticed was used. As the material of the base plate 32a, a stainless steel alloy having super tensile strength was used. The rotation speed (peripheral speed) of the inner peripheral blade 32 was 1130 mZmin.
- the workpiece 66 is referred to as B blocks, vertical and horizontal lengths, respectively 20. 2 mm of the end face, the depth at 52m m is 30 mm, the shape shown in FIG. 4 is a cross-sectional area of about 10. 5 cm 2 An NdFeB-based sintered alloy was used.
- the coolant 1 it was possible to reduce the error of the average thickness and the thickness variation with respect to the target cut thickness (0.66 mm) as compared with the use of the coolant 2. In other words, by using the coolant 1, the cutting process could be performed with higher accuracy.
- Table 5 shows the processing conditions.
- an artificial diamond having an average abrasive grain size of 60 ⁇ m was applied to the inner peripheral edge of the base plate 32a having a thickness of 0.1 mm using a nickel liquid as a grit material.
- An inner peripheral blade 32 having a blade edge 32b with a thickness of 0.26 mm and a layer thickness of a munition was used.
- As the material of the base plate 32a a stainless steel alloy having super tensile strength was used.
- the rotation speed (peripheral speed) of the inner peripheral blade 32 was 1130 mZmin.
- the coolant a product obtained by diluting WS # 252 made by Ushiro Chemical Industries with water was used.
- the coolant was adjusted to 25 ° C during discharge and the discharge pressure was set to 0.15MPa.
- the discharge pressure of the coolant refers to the pressure of the coolant at the discharge port 48a of the coolant nozzle 48.
- the “thickness variation” in this experimental example and the next experimental example is a value obtained by detecting, summing up, and averaging thickness errors for all products obtained by cutting.
- the “thickness error” of the product is obtained as follows. For the product obtained by cutting, the thickness of the nine measurement points shown in Fig. 9 is measured with, for example, a micrometer, and the difference between the maximum value and the minimum value is calculated as the error in the thickness for the product. I do.
- the processing conditions are the same as in Table 5 above.
- artificial diamond having an average gun particle size of 60 ⁇ m as an abrasive material was electroplated on the inner peripheral edge of the base plate 32a having a thickness of 0.1 mm using a nickel liquid to achieve a thickness of 0 mm.
- An inner peripheral blade 32 having a cutting edge 32b with a 26 mm shell strength was used.
- As the material of the base plate 32a a stainless steel alloy having super tensile strength was used.
- the rotation speed (peripheral speed) of the inner peripheral blade 32 was 1130 mZmin.
- WS # 252 manufactured by Ushiro Chemical Industry Co., Ltd. diluted with water was used as the coolant.
- the coolant was adjusted to 25 ° C at the time of discharge, and its surface tension was set to 30 mNZm.
- a work cutting device 100 according to another embodiment of the present invention will be described with reference to FIG.
- a speed suppressing means 102 is used instead of the speed suppressing means 76 in the above-described work cutting apparatus 10.
- the rest of the configuration is the same as that of the work cutting device 10, and therefore, redundant description is omitted.
- the speed suppressing means 102 for suppressing the moving speed of the moving section 53 is provided in the bed 12, and the speed suppressing means 102 includes a guide member 104 and a guide member 104 having a U-shaped cross section. And a return stopper 108 connected to the other end of the guide member 104, and a resistance member 110 sliding on the guide member 104.
- the guide member 104, the feed stopper 106, and the return stopper 108 are fixed, and the resistance member 110 is disposed at a position where the protruding portion 56 is sandwiched by the return stopper 108.
- the resistance member 110 is, for example, a weight such as an iron lump, and a lighter weight than the weight 70 is used.
- the protrusion 56 that moves in the direction of the arrow B due to the fall of the weight 70 pushes the resistance member 110 that requires a certain force for movement.
- the movement suppresses the moving speed of the slide table 54 and thus the excessive feed speed of the work 66.
- the weight 70 is supported by a support table (not shown) so that the weight 70 does not fall! Or the weight 70 has been removed!
- the slide base 54 is manually pushed back in the direction of the return stopper 108 (the direction opposite to the arrow B).
- the weight 70 may be supported by the support or may be removed.
- an open / close opening (not shown) is provided on the side surface of the bed 12, and the open / close opening is opened. The resistance member 110 may be moved.
- the work 66 and the inner peripheral blade 32 can be brought into contact with each other at an optimum feed speed of the work 66. Therefore, even if the inner peripheral blade 32 has a small thickness, the displacement of the cutting edge 32b immediately after the start of cutting can be reduced, and even if the work 66 is a hard and brittle rare earth sintered alloy, chipping is not easily performed. Stable and high definition The cutting process can be started each time. Further, the work cutting device 100 can be configured at a lower cost than when it is not necessary to control the speed suppressing means 102, and the manufacturing cost of the product obtained by the cutting can be reduced.
- a speed suppressing unit 202 is used instead of the speed suppressing unit 76 in the above-described work cutting device 10.
- description of the same components as those of the work cutting device 10 will be omitted.
- the speed suppressing means 202 includes a guide member 204 having a U-shaped cross section, a guide rod 206 having a thread groove formed therein, and a lift in which the guide rod 206 is screwed and slides on the guide member 204 in the bed 12. It includes a plate 208, a rewind stopper 210 joined to the upper end of the guide member 204, and a motor 212 connected to the guide bar 206.
- speed control means 202 includes a support plate 216 connected to the tip of lift plate 208 protruding from lift hole 214 formed on the side surface of bed 12, and supporting weight 70.
- the lower end of the guide member 204 is joined to the bottom surface in the bed 12.
- the guide bar 206 passes through the rewind stopper 210 and is rotatably held by a bearing 218 provided on the bottom surface in the bed 12.
- a feed stopper 220 and a return stopper 222 are provided below the guide groove 50 in the bed 12.
- the feed stopper 220 regulates the front end position of the protrusion 56
- the return stopper 222 regulates the rear end position of the protrusion 56.
- the guide rod 206 is driven to rotate at a constant speed by a connected motor 212, and lowers or raises the lift plate 208 and the support plate 216 connected to the lift plate 208. At this time, the lift plate 208 slides up and down the guide member 204 and moves without swinging left and right with the rotation of the guide bar 206.
- the motor 212 starts rotating when a start button (not shown) is pressed. Further, the rotation speed and rotation direction of the motor 212 can be changed by a control unit (not shown).
- the work cutting device 200 is connected to the lift plate 208.
- the support plate 216 supporting the weight 70 by lowering the support plate 216 supporting the weight 70 at a speed that suppresses the falling of the weight 70, the force of pulling the slide table 54 of the weight 70 in the direction of arrow B is reduced, and the moving speed of the slide table 54, Suppress excessive feed speed of workpiece 66.
- the feeding operation (cutting operation) of the workpiece 66 when the workpiece 66 shown in FIG. 4 is cut is the same as the feeding operation of the workpiece 66 in the workpiece cutting device 10. .
- the slide table 54 is manually pushed back in the direction of the return stopper 222 (the direction opposite to the arrow B).
- the weight 70 is again supported at the position shown in FIG. 12A by the support plate 216 that rises by reversing the rotation direction of the motor 212.
- the operation of returning the position of the weight 70 may be performed, for example, by pressing a return button, or may be performed automatically by attaching a sensor to the suppression plate 216.
- the work 66 and the inner peripheral blade 32 can be brought into contact with each other at an optimum feed speed of the work 66. Therefore, even if the inner peripheral blade 32 has a small thickness, the displacement of the cutting edge 32b immediately after the start of cutting can be reduced, and the work 66 However, even if it is a rare earth sintered alloy having a hard and brittle property, cutting can be started stably with a high degree of chipping. Further, the moving speed of the moving part 53 can be suppressed only by setting the descending speed of the support plate 216 so that the falling speed of the weight 70 is suppressed, and a complicated cutting system is not required, and the work cutting device can be manufactured at low cost. 200 can be formed, and the production cost of the product obtained by cutting can be reduced.
- the present invention can also be applied to a work cutting device of a type in which the inner peripheral blades are arranged sideways and laid down.
- the present invention is also applicable to a work cutting apparatus of a type in which an inner peripheral blade is sent to a work to perform cutting.
- the present invention can be applied to a peak cutting device using an outer peripheral blade (outer peripheral ganite) having a cutting edge on the outer peripheral edge of the base plate.
- the work used in the present invention is not limited to rare earth sintered alloys, but is broadly applicable to works that perform high-precision cutting such as silicon and gallium arsenide.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Milling Processes (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2005514804A JP4687461B2 (ja) | 2003-10-16 | 2004-10-15 | ワーク切断装置およびワーク切断方法 |
CN2004800301997A CN1867435B (zh) | 2003-10-16 | 2004-10-15 | 工件切断装置和工件切断方法 |
Applications Claiming Priority (2)
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JP2003-356252 | 2003-10-16 | ||
JP2003356252 | 2003-10-16 |
Publications (1)
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WO2005037509A1 true WO2005037509A1 (ja) | 2005-04-28 |
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Family Applications (1)
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PCT/JP2004/015285 WO2005037509A1 (ja) | 2003-10-16 | 2004-10-15 | ワーク切断装置およびワーク切断方法 |
Country Status (3)
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JP (1) | JP4687461B2 (ja) |
CN (3) | CN102241078B (ja) |
WO (1) | WO2005037509A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105666710A (zh) * | 2016-04-05 | 2016-06-15 | 东旭科技集团有限公司 | 用于板材切割的内圆切片机 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101444933B (zh) * | 2008-12-24 | 2012-02-01 | 陈厚樟 | 多刀头内圆切片机 |
KR101567908B1 (ko) * | 2009-04-24 | 2015-11-10 | 가부시키가이샤 토쿄 세이미쯔 | 다이싱 장치, 다이싱 장치 유닛 및 다이싱 방법 |
JP5802072B2 (ja) * | 2011-07-26 | 2015-10-28 | 株式会社岡本工作機械製作所 | 円筒状インゴットブロックを四角柱状ブロックに加工する切断方法 |
CN110682126B (zh) * | 2019-10-12 | 2020-09-11 | 台州市黄岩新艺模具有限公司 | 一种旋转式中空薄壁型材切割机 |
CN114310481B (zh) * | 2022-02-23 | 2023-03-24 | 扬州中孚机械有限公司 | 一种提高冷切飞锯机控制精度的方法及系统 |
DE202023106262U1 (de) | 2023-10-27 | 2023-11-30 | Adarsha Hiriyannaiah | Hilfsmittel für das Schneiden von Werkstücken |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55112755A (en) * | 1979-02-20 | 1980-08-30 | Matsushita Electric Ind Co Ltd | Cutting method of block unit |
JPS61284406A (ja) * | 1985-06-12 | 1986-12-15 | 株式会社日立製作所 | 切断装置 |
JPH10259396A (ja) * | 1997-03-21 | 1998-09-29 | Neos Co Ltd | ワイヤソー用水溶性切削液 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US548526A (en) * | 1895-10-22 | Valve releasing gear | ||
JPH05318460A (ja) * | 1992-05-25 | 1993-12-03 | Tokyo Seimitsu Co Ltd | 半導体ウエハのスライシング方法 |
US6837778B2 (en) * | 2000-11-24 | 2005-01-04 | Neomax Co., Ltd | Method for cutting rare earth alloy, method for manufacturing rare earth magnet, and wire-saw machine |
JP4497768B2 (ja) * | 2001-09-06 | 2010-07-07 | ユシロ化学工業株式会社 | 固定砥粒ワイヤソー用水溶性加工液組成物 |
-
2004
- 2004-10-15 CN CN201110129744.XA patent/CN102241078B/zh not_active Expired - Lifetime
- 2004-10-15 WO PCT/JP2004/015285 patent/WO2005037509A1/ja active Application Filing
- 2004-10-15 CN CN2004800301997A patent/CN1867435B/zh not_active Expired - Lifetime
- 2004-10-15 JP JP2005514804A patent/JP4687461B2/ja not_active Expired - Lifetime
- 2004-10-15 CN CN2010101455415A patent/CN101804670B/zh not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55112755A (en) * | 1979-02-20 | 1980-08-30 | Matsushita Electric Ind Co Ltd | Cutting method of block unit |
JPS61284406A (ja) * | 1985-06-12 | 1986-12-15 | 株式会社日立製作所 | 切断装置 |
JPH10259396A (ja) * | 1997-03-21 | 1998-09-29 | Neos Co Ltd | ワイヤソー用水溶性切削液 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105666710A (zh) * | 2016-04-05 | 2016-06-15 | 东旭科技集团有限公司 | 用于板材切割的内圆切片机 |
Also Published As
Publication number | Publication date |
---|---|
CN101804670B (zh) | 2012-06-27 |
CN102241078B (zh) | 2014-01-15 |
CN1867435A (zh) | 2006-11-22 |
CN101804670A (zh) | 2010-08-18 |
JPWO2005037509A1 (ja) | 2006-12-28 |
JP4687461B2 (ja) | 2011-05-25 |
CN102241078A (zh) | 2011-11-16 |
CN1867435B (zh) | 2010-05-12 |
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