TW201726323A - Fixed abrasive grain wire saw and method for dressing fixed abrasive grain wire that comprise a fixed abrasive grain wire, a workpiece supply table having a workpiece fixing section for fixing a workpiece, and a dressing stone - Google Patents

Abstract

An object of the present invention is to provide a fixed abrasive grain wire saw and a method for dressing a fixed abrasive gran wire, which, in addition to a consideration of operation aspect of maintainability, applies a more reasonable design in respect of an arrangement relationship between a work table that holds a workpiece and a dressing stone for performing dressing of a fixed abrasive grain wire. The solution comprises a fixed abrasive grain wire (2); a workpiece supply table (6) having a workpiece fixing section (16) for fixing a workpiece (W); and a dressing stone (41). A wire row (30) is formed by arranging a fixed abrasive grain wire (2) wrapped around grooved pulleys (3-5) in a transmission direction along the grooved pulleys so that the dressing stone is adjacent to the workpiece fixing section at a location upstream the workpiece fixing section in the transmission direction of the workpiece supply table.

Description

Fixed abrasive wire saw and fixed abrasive wire repairing method

The present invention relates to a method for dressing a fixed abrasive wire saw and a fixed abrasive grain steel for cutting a workpiece composed of a hard and brittle material such as enamel, glass, ceramics or the like.

Conventionally, a wire saw (i.e., a cutting device using a wire) has been known as one of the devices for cutting a plurality of sheets (wafers) from a workpiece composed of a hard and brittle material (i.e., an ingot). The wire saw is formed by forming a spiral wire line in which a core wire such as a piano wire is arranged side by side between a plurality of grooved pulleys, and the ingot is pressed against the wire which is traveling at a high speed in the wire row, and the ingot is cut into Most wafers. The wire saw is cut by a free abrasive method in which a machining liquid containing free abrasive grains (that is, a slurry) is sprayed toward the steel wire row, and is fixed on the surface of the core wire as shown in Patent Document 1. Fixed abrasive grain method for granule fixed abrasive wire cutting. The free abrasive grain method has a problem of disposal of the slurry, etc., and therefore, in recent years, it is necessary to use the above mud without using the above-mentioned mud. A fixed abrasive grain method in which the cutting efficiency is superior to the abrasive grain method has been gradually spread. Further, a fixed abrasive wire used in the above-described fixed abrasive grain type wire saw (that is, a fixed abrasive wire saw) is known as a steel wire in which abrasive grains are fixed to a core wire by metal plating (see Patent Document 2).

However, in the case of using a fixed abrasive wire which is plated with a core wire to fix the abrasive grains by metal plating, in order to ensure more excellent cutting efficiency and cutting accuracy, it is preferable that the tip end of the abrasive grain, that is, the tip end is often exposed, so that clogging is not caused by chips, but Generally, as disclosed in the above-mentioned Patent Document 2, in the new state before the start of use, the tip end of the abrasive grains is coated by metal plating, and it is extremely difficult to avoid clogging after the start of use.

For this reason, the wire saw described in the above-mentioned document 1 is obtained by pressing the dressing grindstone against the wire row, thereby trimming the fixed abrasive wire. However, from the viewpoint of the maintenance surface such as maintenance, the wire saw still has insufficient consideration for the arrangement relationship between the table for holding the ingot and the grinding stone for dressing, and there is room for improvement in design.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 11-28654

[Patent Document 2] Japanese Laid-Open Patent Publication No. 2006-181698

[Summary of the Invention]

Therefore, the technical problem of the present invention is to provide an arrangement relationship between a table for holding a workpiece and a dressing stone for dressing a fixed abrasive wire, and it is more reasonable to consider the use surface such as maintainability. A fixed abrasive wire saw designed and a method of dressing a fixed abrasive wire for fixing the abrasive wire saw.

In order to solve the above problems, according to the present invention, there is provided a fixed abrasive wire saw having: a fixed abrasive wire which is fixed to a surface of a core wire by metal plating; a plurality of grooved pulleys arranged in parallel with each other; and a workpiece supply for fixing the workpiece And a dressing grindstone for trimming the fixed abrasive grain steel wire, wherein the fixed abrasive grain steel wire is spirally wound between the grooved pulleys, and wires are arranged at a predetermined interval in a transmission direction parallel to the rotating shaft The fixed abrasive wire is driven at a high speed in the direction of the core line, and the workpiece fixed to the wire row and the workpiece supply table is pressed against each other, thereby cutting the fixed abrasive wire saw for the workpiece, which is characterized by The workpiece supply table is provided with a workpiece fixing portion for fixing the workpiece, and the dressing grindstone is at least upstream of the workpiece fixing portion in the transmission direction, and is fixed adjacent to the workpiece fixing portion.

In this case, it is preferable that the dressing grindstone is composed of the first and second dressing grindstones, and the first dressing grindstone is on the upstream side of the workpiece fixing portion in the transmission direction. And disposed adjacent to the workpiece fixing portion, and the second dressing grindstone is at the workpiece fixing portion The downstream side is adjacent to and fixed to the workpiece fixing portion.

Furthermore, it is preferable that the front end surface facing the steel wire row of the first dressing grindstone protrudes toward the steel wire row side from the front end surface facing the steel wire row of the second dressing grindstone.

Moreover, according to the present invention, there is provided a fixed abrasive wire saw having: a fixed abrasive wire which is fixed to a surface of a core wire by metal plating; a plurality of grooved pulleys arranged in parallel with each other; and a workpiece supply table for fixing the workpiece, The fixed abrasive wire is spirally wound between the grooved pulleys, and a steel wire row arranged at a predetermined pitch is formed in a transmission direction parallel to the rotating shaft, so that the fixed abrasive wire is driven at a high speed in the direction of the core. And a fixed abrasive wire saw for cutting the workpiece, wherein the workpiece is fixed to the workpiece and the workpiece is fixed to the workpiece supply station, and the workpiece supply station is provided with: a workpiece for fixing the workpiece And a fixed portion, and a grindstone fixing portion for fixing the grindstone for fixing the fixed abrasive wire, wherein the grindstone fixing portion is disposed at least upstream of the workpiece fixing portion in the transmission direction, and is disposed adjacent to the workpiece fixing portion.

In this case, it is preferable that the grindstone fixing portion is constituted by the first and second grindstone fixing portions, and the first grindstone fixing portion is on the upstream side of the workpiece fixing portion in the transmission direction. The second grindstone fixing portion is disposed adjacent to the workpiece fixing portion, and the second grindstone fixing portion is disposed adjacent to the workpiece fixing portion on the downstream side of the workpiece fixing portion.

In addition, according to the present invention, there is provided a method for dressing a fixed abrasive wire, characterized in that: the fixed abrasive wire which is fixed to the surface of the core wire by metal plating is spirally wound around the rotating shaft and arranged in parallel with each other. a plurality of grooved pulleys, thereby forming a step of arranging the wire rows in a transmission direction parallel to the rotating shaft at a predetermined interval; fixing the workpiece to the workpiece supply table and at the workpiece supply table a step closer to at least the upstream side of the transmission direction, a step of abutting and fixing the dressing grindstone to the workpiece; and a high-speed walking of the fixed abrasive wire in the direction of the core thereof, and the workpiece supply table and the wire The columns are moved toward each other, whereby the fixed abrasive wire which is positioned on the upstream side of the above-mentioned transmission direction is trimmed with the above-mentioned dressing grindstone, and the wire formed by the fixed fixed abrasive wire is trimmed The step of cutting the above workpiece.

In the above trimming method according to the present invention, it is preferable that a front end surface opposite to the steel wire row of the dressing grindstone fixed to the workpiece supply table is opposed to the steel wire row of the workpiece fixed to the workpiece supply table. The front end face protrudes further toward the side of the steel wire.

Further, it is preferable that the dressing grindstone is composed of the first and second dressing grindstones, and the first dressing grindstone is on the upstream side of the workpiece in the transmission direction, and The workpiece is adjacent and fixed, and the second dressing grindstone is on the downstream side of the workpiece, adjacent to and fixed to the workpiece.

In this case, it is preferable that the front end surface facing the steel wire row of the first dressing grindstone protrudes toward the steel wire row side from the front end surface facing the steel wire row of the second dressing grindstone, and 2 The front end surface of the dressing grindstone and the front end surface of the workpiece are disposed at substantially the same distance from the steel wire row.

According to the invention described above, the fixed abrasive wire is trimmed with the dressing grindstone before the workpiece is cut by the wire row of the fixed abrasive wire. Therefore, the metal plating layer covering the surface of the abrasive grain of the fixed abrasive wire can be removed, and the workpiece can be cut after the blade of the abrasive grain is exposed, thereby improving the cutting efficiency of the workpiece. In addition, the above-described workpiece and the dressing grindstone are fixed to the same workpiece supply table, which not only avoids complication of the structure, but also replaces the dressing grindstone with the replacement of the workpiece, and the maintenance surface is also used. Excellent results can be achieved.

1‧‧‧Fixed wire saw

2‧‧‧Fixed abrasive wire

3-5‧‧‧Slotted pulley

6‧‧‧Workpiece supply station

15‧‧‧Working part fixing

16‧‧‧1st Grindstone Fixing Department

17‧‧‧2nd Grindstone Fixing Department

30‧‧‧Steel line

41‧‧‧1st trimming millstone

41a‧‧‧ front face

42‧‧‧2nd trimming millstone

42a‧‧‧ front face

W‧‧‧Workpiece

W1‧‧‧ front face

Fig. 1 is a schematic view showing an embodiment of a fixed abrasive wire saw according to the present invention.

Fig. 2 is a schematic perspective view showing a cutting portion of the fixed abrasive wire saw of Fig. 1.

Fig. 3 is a schematic partial enlarged view showing a state before cutting of the workpiece of the cutting portion.

Fig. 4 is a schematic partial enlarged view showing a state in which the fixed abrasive wire is trimmed before the start of cutting of the workpiece in the cutting portion.

Fig. 5 is a schematic partial enlarged view showing a state at the start of cutting of the workpiece in the cutting portion.

Fig. 6 is a schematic partial enlarged view showing a state in the middle of cutting of the workpiece in the cutting portion.

Fig. 1 through Fig. 6 show an embodiment of the fixed abrasive wire saw of the present invention. The fixed abrasive wire saw 1 of the present embodiment is a fixed abrasive wire 2 in which abrasive grains are fixed to the surface of a core wire by metal plating, and a plurality of grooved pulleys 3 arranged in parallel with each other with the rotating shafts as shown in Fig. 1 and Fig. 2; -5; a workpiece supply table 6 for fixing the workpiece W; and a dressing grindstone 41, 42 which is in contact with the fixed abrasive wire 2 to trim the fixed abrasive wire 2, and is wound around the fixed abrasive wire 2 The wire row 30 formed between the groove pulleys 3-5 presses the workpiece W to form a wafer that can cut a plurality of sheets. Further, in the present embodiment, a tantalum ingot having a long square column shape formed in one direction is used as the workpiece W.

The fixed abrasive wire 2 is a core wire formed by a piano wire or the like, and is, for example, a hard fine abrasive grain formed by plating a diamond or a cubic boron nitride (cBN) with a metal such as nickel, and is plated with a metal such as nickel. In the fixed abrasive wire 2 in a new state before the dressing, the entire surface of the abrasive grain is covered with a metal plating layer. Further, in the present embodiment, the fixed abrasive wire 2 is used as the above-described fixed abrasive wire 2 by using a wire diameter of about 0.1 mm, and the cutting hardness can be increased and the cutting cost can be suppressed.

As shown in Fig. 1, the fixed abrasive wire 2 is wound around a pair of wire reels 7, 8 at both end sides, and between the wire reels 7, 8 is formed to cut the workpiece W into The cutting portion 20 of the sheet. Further, between the pair of wire reels 7, 8, a wire travel path 9 on the side of the one side wire reel 7 between the cutting portion 20 and a wire travel path 10 on the other side of the wire reel 8 are provided. Further, in the wire-traveling paths 9, 10, a lateral movement device 11 for laterally operating the fixed abrasive wire 2, and a regulating roller 12 for applying a constant tension to the traveling wire 2 are disposed; The guide roller 13 for fixing the abrasive wire 2 is guided forward and backward of the regulating roller 12 so that the fixed abrasive wire 2 is appropriately fed out from the wire reels 7, 8 and appropriately wound around.

A motor (not shown) is connected to each of the wire reels 7 and 8 described above. The motor is driven to thereby feed the fixed abrasive wire 2 from one of the wire reels 7 and surround the grooved pulley 3-5 disposed in the cutting portion 20, and collect it to the other wire reel 8, where The wire reels 7, 8 are moved at high speed along the direction of their cores.

Further, the fixed abrasive wire 2 can travel only in one direction (from one wire reel 7 toward the other wire reel 8) along the direction of the core, or can travel back and forth. In the case of the present embodiment, in the case of cutting the workpiece W, the fixed abrasive wire 2 is configured to reciprocate between the wire reels 7 and 8. Further, the amount of the fixed abrasive wire 2 supplied from one of the wire reels 7 is made longer than the winding amount wound around the wire reel 7, and a new fixed abrasive wire can be sequentially supplied from the wire reel 7 to be supplied. To the above-mentioned steel wire string 30. In the present embodiment, the feed amount is set to be about 400 m, and the return amount is set to 397 m, so that the fixed abrasive wire 2 to which the wire row 30 is supplied is replaced with a new fixed abrasive wire 2 at a distance of 3 m.

As shown in FIG. 1 or FIG. 2, the first grooved pulley 3 positioned on the side of one of the steel wire travel paths 9 and the second grooved pulley positioned on the other side of the other steel wire travel path 10 are disposed in the cutting portion 20. 4; and three pulleys formed by the third grooved pulley 5 located below the first and second grooved pulleys 3, 4. The three grooved pulleys 3-5 are parallel to each other in the rotation axis, and are arranged such that the respective rotation axes are respectively located at the vertices of the triangle when they are displayed from the axial direction thereof.

Further, on the outer peripheral surface of the grooved pulley 3-5, a ring-shaped wire groove 14 for positioning a plurality of fixed abrasive wires 2 is formed at a predetermined pitch, and the fixed abrasive wire 2 is engaged with one another. The wire groove 14 of the groove pulley 3-5 is wound in a spiral shape. Thereby, between the first and second grooved pulleys 3 and 4, a wire row 30 in which the fixed abrasive wire 2 is arranged at a predetermined pitch is formed in a direction parallel to the rotation axis. Further, in the wire array 30 of the present embodiment, the fixed abrasive wires 2 having a length of about 800 m are stretched between the grooved pulleys 3-5, and the fixed abrasive wires 2 are arranged side by side at a pitch of 0.3 mm in the transmission direction.

Further, in the cutting portion 20, a horizontally long workpiece supply table 6 is disposed along the transmission direction in the center of the extending direction of the wire row 30, and the wire is driven relative to the wire by a table transmission (not shown). Column 30 is driven freely up and down. As the workpiece supply table 6 descends toward the wire row 30, the workpiece W fixed under the workpiece supply table 6 is pressed against the wire row 30 to be cut, and as a result, the workpiece W is simultaneously cut into a plurality of sheets. Wafer. Further, as long as the workpiece W can be relatively pressed against the wire row 30, for example, three grooved pulleys 3-5 are held while In the relative positional relationship, the lifting device for raising and lowering the grooved pulleys 3-5 is configured to raise the wire row 30 toward the workpiece W fixed to the workpiece supply table 6. Alternatively, one of the workpiece supply table 6 and the wire row 30 may be movably configured to be close to each other.

As shown in Fig. 3, the workpiece supply table 6 is provided with a workpiece fixing portion 15 for fixing the workpiece W, and grindstone fixing portions 16 and 17 for fixing the dressing stones 41 and 42.

The workpiece fixing portion 15 is provided at a substantially central position of the driving direction on the lower surface side of the workpiece supply table 6 adjacent to the wire row 30 (the lower side of the first drawing), and is mounted along the workpiece along the driving direction. One side of the long direction of W. Further, a base plate or the like is attached to the workpiece fixing portion 15, and the workpiece W is fixed to the substrate by an adhesive or the like.

The grindstone fixing portions 16 and 17 are composed of the first grindstone fixing portion 16 and the second grindstone fixing portion 17, and are provided on the lower surface side of the workpiece supply table 6, similarly to the above-described workpiece fixing portion 15. Specifically, the first grindstone fixing portion 16 is disposed on the upstream side of the workpiece fixing portion 15 in the transmission direction, and is disposed adjacent to the workpiece fixing portion 15, and the second grindstone fixing portion 17 is a workpiece in the above-described transmission direction. The downstream side of the fixing portion 15 is disposed adjacent to the workpiece fixing portion 15.

The two dressing grindstones 41 and 42 are fixed to the grindstone fixing portions 16 and 17 with an adhesive or the like. As shown in FIG. 3, the first dressing grindstone 41 is attached to the first grindstone fixing portion 16, and the second dressing grindstone 42 is attached to the second grindstone fixing portion 17. Taking this as the second chart In the above-described transmission direction, the first dressing grindstone 41 is disposed on the upstream side of the workpiece fixing portion 15 to which the workpiece W is fixed, and the second dressing grindstone 42 is disposed on the downstream side of the workpiece fixing portion 15. Composition. The dressing stones 41 and 42 are formed into a substantially rectangular flat plate shape (a substantially rectangular shape), and the side end faces of one of the plate thickness directions are respectively placed on the workpiece W in a state in which the workpiece W is fixed. The end faces of the long sides are opposed to each other.

At this time, the distal end surface 41a opposed to the wire row 30 of the first dressing grindstone 41 protrudes toward the wire row 30 side from the distal end surface 42a opposed to the wire row 30 of the second dressing grindstone 42. In the state in which the workpiece W is fixed to the workpiece fixing portion 15, the front end surface 41a of the first dressing grindstone protrudes toward the side of the steel wire row 30 from the front end surface W1 of the workpiece W facing the steel wire row 30. On the other hand, the distal end surface 42a of the second dressing grindstone 42 is in a state in which the workpiece W is fixed to the workpiece fixing portion 15, and the distal end surface W1 of the workpiece W is separated from the steel wire array 30 by substantially the same distance. The front end faces 42a and W1 form substantially the same face. Further, the dressing stones 41 and 42 may be fixed to the grindstone fixing portions 16 and 17 through the partition plate.

The first and second dressing grindstones 41 and 42 are disposed in a plurality of fixed abrasive grain steel wires 2 forming the steel wire row 30, and the fixed abrasive wire 2 located on the most upstream side in the above-described transmission direction is positioned in the same transmission direction. Between the fixed abrasive wires 2 on the most downstream side. Thereby, the first (grinding) grindstone 41 is used to trim the metal plating of the front end of the abrasive grain by the new (unused) fixed abrasive wire 2 on the upstream side of the workpiece W in the above-mentioned transmission direction. The leading end (tip) of the abrasive grain can be exposed before the workpiece W is cut. Further, with the reciprocating travel of the fixed abrasive wire 2, the workpiece W is cut after the fixed abrasive wire 2 is cut, and the dressing grindstone 41 is again trimmed, thereby suppressing clogging of the cutting layer due to the cutting of the workpiece W. In addition, the second dressing grindstone 42 also trims the fixed abrasive wire after the workpiece W is cut, and removes the chips adhering to the fixed abrasive wire to suppress the above-described clogging.

Further, the dressing stones 41 and 42 may be appropriately used in combination with the type, particle diameter, concentration, or metal material of the plating layer fixed to the core material of the fixed abrasive wire 2, as appropriate. As described above, the first dressing grindstone 41 mainly causes the abrasive grains of the fixed abrasive wire 2 to protrude before the start of cutting, and is thicker than the second dressing grindstone 42. Moreover, the thickness of the dressing grindstone can be appropriately selected in accordance with the wire diameter or the amount of transmission of the fixed abrasive wire 2. For example, in the present embodiment, the thickness of the first dressing grindstone 41 is about 30 mm, and about 200 fixed abrasive wires can be trimmed in a state where the steel wire row 30 is in contact with each other.

When the workpiece W is cut, first, as described above, the fixed abrasive wire 2 is attached to the wire saw 1 and spirally wound around the grooved pulleys 3-5 to form the wire row 30. The workpiece W is fixed to the workpiece fixing portion 15 of the workpiece supply table 6, and the first dressing grindstone 41 is fixed to the first grindstone fixing portion 16 of the workpiece supply table 6, and the second grindstone is fixed to the second grindstone. The second trimming stone 42 is fixed to the portion 17. Furthermore, it is shown in Fig. 3. The first and second dressing stones 41 and 42 are disposed in a state in which the workpiece W and the dressing stones 41 and 42 are fixed. The one end surface of the one surface is brought into a non-contact state with each of the side end surfaces of the workpiece W. For example, one of the dressing stones 41 and 42 may be placed in contact with the workpiece W or may be disposed. The two dressing grindstones 41, 42 are brought into contact with the workpiece W.

Subsequently, when a motor (not shown) is driven to rotate the pair of wire reels 7, 8, the fixed abrasive wire 2 travels at a high speed in the direction of the core, and the wire row 30 is sequentially driven in the above-described transmission direction. Further, the workpiece supply table 6 is sequentially lowered toward the wire row 30, and the fixed abrasive wires 2 which are located on the upstream side and the downstream side of the workpiece W in the transmission direction are trimmed by the two dressing stones 41 and 42. The workpiece W fixed to the workpiece fixing portion 15 of the workpiece supply table 6 is gradually cut at intervals of the pitch of the steel wire rows 30, and finally, the plurality of wafers can be simultaneously cut.

The dressing method for the fixed abrasive wire 2 is further specifically described. First, from the state before the lowering of the workpiece supply table 6 (Fig. 3), the workpiece supply table 6 is lowered by a predetermined distance toward the traveling steel wire string 30. In addition, as shown in Fig. 4, the plurality of fixed abrasive wire 2 groups arranged in the wire row 30 on the upstream side of the workpiece W in the transmission direction are in contact with the first end of the workpiece W. The grinding stone 41 (front end surface 41a) is trimmed. At this time, the above-described wire row 30 is in a state of being non-contact with the workpiece W. While maintaining the state and gradually lowering the workpiece supply table 6, the fixed abrasive wire 2 is formed into the cut groove 18 in the first dressing grindstone 41 and trimmed in the groove 18 of the dressing grindstone 41. Metal plating that removes the surface of the coated abrasive grain to expose the tip of the abrasive grain Out.

Further, the trimming performed before the start of the cutting of the workpiece W is such that the steel wire 2 is spanned at least about the length of the range in contact with the workpiece W during the cutting (that is, wound around the first and second trimming mills). The length of the stone 41 and 42 is trimmed. In this way, the cutting of the workpiece W can be started from the tip of the initial abrasive grain, that is, the exposed fixed abrasive wire 2 . Further, in the trimming, the fixed abrasive wire 2 can be moved at a high speed on one side without going back and forth, thereby shortening the time required for trimming.

Further, by the first dressing grindstone 41, after finishing the fixing of the fixed abrasive wire 2 before the start of cutting, the front end face W1 of the workpiece W is brought into contact with a plurality of fixed abrasive wire 2 groups to start the workpiece W. Cutting (Fig. 5). At this time, as described above, the plurality of fixed abrasive wire 2 groups for cutting the workpiece W are trimmed by the first dressing grindstone 41 to expose the tip end (tip) of the abrasive grains. Therefore, the sharpness of the fixed abrasive wire 2 at the initial stage of cutting is prevented from being insufficient, and the generation of chips generated on the cutting surface of the workpiece W is suppressed, and the workpiece W can be cut stably and accurately. Further, the fixed abrasive wire 2 constituting the steel wire row 30 is also in contact with the second dressing grindstone 42 and cut into the second dressing grindstone 42 together with the first dressing grindstone 41, thereby the workpiece W On the upstream side, the plurality of fixed abrasive wire 2 groups are also trimmed on the downstream side of the workpiece W. Further, the workpiece supply table 6 is further lowered. As shown in Fig. 6, the fixed abrasive wire 2 is trimmed while the first and second dressing stones 41 and 42 are formed into the cut grooves 18 and 19, and the workpiece W is The cutting groove 50 is formed to gradually cut. And, finally, the cutting of the workpiece W is completed, and a new work is being carried out. In the case of the cutting of the workpiece W, the workpiece W placed on the workpiece supply table 6 and the dressing stones 41 and 42 are replaced with new ones, and the fixed abrasive wire 2 is trimmed in the above-described order. The cutting of the workpiece W is performed.

As described above, according to the fixed abrasive wire saw 1 of the present embodiment, the first dressing grindstone 41 can be positioned on the upstream side of the workpiece W in the above-described transmission direction of the fixed abrasive wire 2 with respect to the workpiece supply table 6. In a simple configuration in which the workpiece W is fixed adjacent to the workpiece W, the fixed abrasive wire 2 is trimmed before the start of cutting of the workpiece W to expose the abrasive grains. In addition, the dressing grindstone 41 and the workpiece W are provided on the same workpiece supply table 6, and the maintenance work such as the replacement of the workpiece W and the dressing grindstone can be easily performed, and the operation surface can be excellent. Effect.

Further, in the present embodiment, the two dressing stones 41 and 42 are provided, but the invention is not limited thereto. For example, when the workpiece W is an ingot having a low viscosity, and the trimming on the downstream side of the wire row 30 is not necessary, the second dressing grindstone 42 may not be provided, and the first grindstone fixing portion 16 may be disposed first. The grinding stone 41 can be used for dressing. Further, for the shape of the dressing grindstone, for example, the front end surface adjacent to the steel wire row 30 may be formed in a circular arc shape, or an acute-angled tip (or a wide tip end) shape may be formed toward the steel wire row 30, and an appropriate shape may be selected. . Further, in the present embodiment, when the fixed abrasive wire 2 is reciprocated, the reciprocating length (transmission amount, return amount) of the fixed abrasive wire 2 can be appropriately set in accordance with the length of the workpiece W, the material, and the like. Further, although the workpiece W is formed in a quadrangular prism shape, as long as it can be fixed to the workpiece fixing portion 15, for example, a cylindrical casting can be used. ingot.

As described above, the fixing method of the fixed abrasive wire saw and the fixed abrasive wire according to the present invention has been described. However, the present invention is not limited to the above-described embodiments, and various design changes can of course be made without departing from the scope of the patent application. .

2‧‧‧Fixed abrasive wire

3‧‧‧Slotted pulley

4‧‧‧Slotted pulley

5‧‧‧Slotted pulley

6‧‧‧Workpiece supply station

14‧‧‧ wire trough

20‧‧‧cutting department

30‧‧‧Steel line

41‧‧‧1st trimming millstone

42‧‧‧2nd trimming millstone

W‧‧‧Workpiece

Claims (9)

A fixed abrasive wire saw having: a fixed abrasive wire fixed by wire electroplating to the surface of the core wire; a plurality of grooved pulleys arranged parallel to each other; a workpiece supply table for fixing the workpiece; and trimming the fixed abrasive wire a dressing grindstone, wherein the fixed abrasive grain steel wire is spirally wound between the grooved pulleys, and a steel wire row arranged at a predetermined interval is formed in a transmission direction parallel to the rotating shaft, so that the fixed abrasive wire is in the same a fixed abrasive wire saw for cutting the workpiece, wherein the workpiece supply station is provided with: The workpiece fixing portion for fixing the workpiece, and the dressing grindstone is at least upstream of the workpiece fixing portion in the transmission direction, and is adjacent to the workpiece fixing portion and fixed. The fixed abrasive wire saw according to the first aspect of the invention, wherein the dressing grindstone is composed of a first and a second dressing grindstone, and the first dressing grindstone is Further on the upstream side of the workpiece fixing portion in the transmission direction, the workpiece fixing portion is adjacent to and fixed to the workpiece fixing portion, and the second dressing grindstone is adjacent to the workpiece fixing portion and fixed to the workpiece fixing portion. The fixed abrasive wire saw according to the second aspect of the invention, wherein a front end surface of the first dressing grindstone facing the steel wire row is opposite to a front end surface of the second dressing grindstone It protrudes toward the side of the steel wire column. A fixed abrasive wire saw having: grinding abrasive grains by metal plating a fixed abrasive wire fixed to the surface of the core wire; a plurality of grooved pulleys arranged parallel to each other; and a workpiece supply table for fixing the workpiece, wherein the fixed abrasive wire is spirally wound between the grooved pulleys, and is formed in the same manner as the rotating shaft The parallel transmission directions form a steel wire row arranged at a predetermined pitch, so that the fixed abrasive grain steel wire travels at a high speed on the side of the core wire, and presses the workpieces fixed to the wire row and the workpiece supply table to each other, thereby cutting The fixed abrasive wire saw for the workpiece is characterized in that: the workpiece supply table is provided with: a workpiece fixing portion for fixing the workpiece, and a grindstone fixing portion for trimming the fixed grindstone for trimming the fixed abrasive wire The grindstone fixing portion is disposed on at least the upstream side of the workpiece fixing portion in the transmission direction, and is disposed adjacent to the workpiece fixing portion. The fixed abrasive wire saw according to claim 4, wherein the grindstone fixing portion is composed of a first and a second grindstone fixing portion, and in the workpiece supply table, the first grindstone fixing portion is The upstream side of the workpiece fixing portion in the transmission direction is disposed adjacent to the workpiece fixing portion, and the second grindstone fixing portion is disposed adjacent to the workpiece fixing portion on the downstream side of the workpiece fixing portion. A method for dressing a fixed abrasive wire, characterized in that: a fixed abrasive wire which is fixed by electroplating on a surface of a core wire by a metal plate is spirally wound around a plurality of grooved pulleys arranged in parallel with each other on a rotating shaft, thereby forming a step of arranging the rows of steel wires in a transmission direction parallel to the above-mentioned rotating shaft at predetermined intervals; fixing the workpiece to the workpiece supply table and at a ratio to the workpiece supply table a step of the workpiece being closer to at least the upstream side of the transmission direction, a step of abutting and fixing the dressing grindstone to the workpiece; and causing the fixed abrasive wire to travel at a high speed in the direction of the core line, and causing the workpiece supply table and the above The steel wire rows are moved toward each other, whereby the fixed abrasive wire which is positioned on the upstream side of the above-mentioned transmission direction is trimmed with the above-mentioned dressing grindstone, and is formed by the fixed fixed abrasive wire after trimming thereof The step of cutting the above workpiece by the wire column. The method for dressing a fixed abrasive wire according to the sixth aspect of the invention, wherein the front end surface opposite to the steel wire row of the dressing grindstone fixed to the workpiece supply table is fixed to the workpiece supply table. The opposite end faces of the above-mentioned steel wire rows of the workpiece protrude further toward the steel wire row side. The dressing method of the fixed abrasive wire according to the sixth or seventh aspect of the invention, wherein the dressing grindstone is composed of the first and second dressing grindstones, and the workpiece supply station (1) The dressing grindstone is adjacent to the workpiece on the upstream side of the workpiece in the transmission direction, and the second dressing grindstone is on the downstream side of the workpiece, and is adjacent to the workpiece and fixed. The method for dressing a fixed abrasive wire according to the eighth aspect of the invention, wherein a front end surface of the first dressing grindstone facing the steel wire row is opposite to a steel wire row of the second dressing grindstone; The front end surface protrudes toward the steel wire row side, and the front end surface of the second dressing grindstone and the front end surface of the workpiece are disposed at substantially the same distance from the steel wire row.