JP3236527B2 - Wire saw - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire saw for cutting a work made of a hard and brittle material such as a semiconductor material, a magnetic material, and a ceramic using a wire.

[0002]

2. Description of the Related Art Generally, in a wire saw of this type, a plurality of processing rollers are arranged at predetermined intervals, and a plurality of annular grooves are formed on the outer periphery of the rollers at a predetermined pitch. In addition, one wire is sequentially wound around the annular groove between the processing rollers. Then, while the wire is running, loose abrasive grains are supplied onto the wire, and in this state, the work is pressed against and brought into contact with the wire, and the work is cut or the like.

In a wire saw of this type, when a workpiece is repeatedly processed, an annular groove formed on an outer periphery of a processing roller is gradually damaged due to abrasion or the like. For this reason,
It was necessary to remove each processing roller from the apparatus, re-cut the annular groove on their outer peripheral surface, or replace the processing roller with a new one. In order to cope with such a demand, in a conventional wire saw, for example, FIG.
In addition, the free end of each processing roller is detachably supported by a roller support configuration as shown in FIG.

[0004] That is, the bracket 61 is mounted on a base frame 62, and a support shaft 63 is protruded from the front surface thereof. The support frame 64 is supported by the support shaft 63 so as to be able to be inserted and removed along a guide ridge 63a for restricting rotation, and a plurality of support cylinder portions 65 are arranged at predetermined intervals on the outer periphery thereof. The cylindrical centering member 66 is axially movably fitted into each of the support cylindrical portions 65, and has a tapered surface 66a formed on the inner peripheral surface thereof and a flange portion 66b formed on the outer peripheral end thereof. ing.

A plurality of processing rollers 67, 68, 69 are connected and supported at their base ends by a drive mechanism (not shown), and tapered shaft portions 67a, 68a, 69a are projected from their free ends. These tapered shaft portions 67a, 68
The flanges 66b of the centering members 66 are fixed to the support cylinder 65 by a plurality of screws 70 in a state in which a and 69a are detachably fitted to the centering members 66 on the support frame 64. . Thereby, the tapered shaft portions 67a, 68a, 6
9a is engaged with the tapered surface 66a of the centering member 64,
The rattling of the processing rollers 67, 68, 69 is prevented, and the processing rollers 67, 68, 69 are centered.

[0006]

However, in this conventional wire saw, each processing roller 67, 68, 6
9 for re-cutting the annular groove on the outer peripheral surface,
When replacing 7, 68, 69 with a new one, the following operation was required. That is, for each of the processing rollers 67, 68, 69, a plurality of screws 70 are loosened or tightened using a tool such as a wrench or a screwdriver, and the tapered shaft portions 67a, 68a, 69a are aligned with the centering member on the support frame 64. 66 had to be disengaged or engaged.
For this reason, there is a problem that the operation of the screw 70 is very troublesome and the work efficiency is poor.

Further, if the support frame 64 is not completely removed from the support shaft 63, the work of attaching and detaching the processing rollers 67, 68, 69 cannot be performed, and the attachment and detachment of the support frame 64 is troublesome.

The present invention has been made by paying attention to such problems existing in the prior art. It is an object of the present invention to provide a wire saw that can easily perform the work when replacing a processing roller with a new one.

[0009]

In order to achieve the above object, according to the first aspect of the present invention, the base ends of a plurality of processing rollers are rotatably supported by a fixed frame via a roller shaft. The other end of each processing roller is rotatably supported by a detachable support frame via a roller shaft. The other end of each roller shaft has a tapered shaft portion and an end surface axis of the tapered shaft portion. Is formed with an engagement concave portion having an insertion hole. The support frame is provided with a centering member having a tapered surface corresponding to a tapered shaft portion of each roller shaft, and a locking nut is rotatably and axially movably mounted on the center of the centering member. ing. Further, the lock nut can be inserted at a predetermined angle with respect to the insertion hole,
In the engagement recess, a mounting bolt having an engagement protrusion at its tip that is axially constrained at a different angle is screwed. After the mounting bolt is inserted into the engagement recess of the tapered shaft portion, the lock nut is tightened, whereby the tapered shaft portion and the centering member are integrally connected.

Therefore, in the wire saw according to the first aspect, the annular groove on the outer peripheral surface of the processing roller is re-cut,
When replacing the processing roller with a new one, the free end of the processing roller is disengaged from the support frame by the following operation. That is, when the mounting bolt is rotated in a direction to loosen the locking nut, the connection between the tapered shaft portion of the processing roller and the tapered surface of the centering member is released. In this state, without completely removing the support frame, the support roller can be moved away from the free end of the processing roller, and the processing roller can be easily removed in a rotated state.

Then, after attaching a processing roller or a new processing roller in which the annular groove is re-cut, the support frame is arranged to face the free end of the processing roller. In this state, the mounting bolt is inserted into the insertion hole of the engagement concave portion and engaged. Thereafter, when the lock nut is rotated in the tightening direction, the tapered shaft portion of the processing roller is firmly engaged with the tapered surface of the centering member, and the free end of the processing roller is centered at a predetermined position.

[0012] In the wire saw according to claim 2,
According to the first aspect, since the lock nut and the mounting bolt are each provided with an operation handle on the outer surface side of the support frame, the turning operation of the lock nut and the mounting bolt is easy.

[0013] In the wire saw according to the third aspect,
In the first or second aspect, the support frame is supported on a fixed shaft extending parallel to the processing roller so as to be rotatable, axially movable, and in a retaining state.

According to the third aspect of the present invention, the support frame is moved along the fixed axis to be disposed at a position separated from the free end of the processing roller and at a position facing the free end of the processing roller. The supporting frame is rotated at the separated position so that the processing roller is exposed to the outside, and the processing roller can be easily attached and detached.

According to a fourth aspect, in the third aspect,
An outer edge portion between the adjacent centering members of the support frame is formed in a concave shape so as not to interfere with a path where the processing roller is extracted from the roller shaft in a state where the support frame is rotated by a certain angle.

Therefore, according to the present invention, the processing roller can be easily attached and detached without being disturbed by the support frame. In claim 5, in claim 4,
A regular surface for angle determination is formed on the support frame, and a fixed bracket for supporting the fixed shaft has a predetermined angle by slidingly contacting the regulated surface when the support frame is moved to the roller support position. A regulating surface for positioning is formed.

Therefore, in the fifth aspect, since the support frame is positioned at a predetermined angle by the engagement between the regulated surface and the regulating surface, there is no need to perform the work of positioning the processing roller. In claim 6, in claim 5, the tip of the mounting screw is screwed into the regulated surface, and the regulating surface is formed with a screw insertion groove that is long in the direction of movement of the support frame and has one open end.
The mounting screw is inserted into the screw insertion groove along with the movement of the support frame, and after the angle is positioned, the mounting screw is tightened to fix the regulated surface to the regulating surface.

Accordingly, in the present invention, if the support frame is arranged at a predetermined position, the processing roller is positioned, and
The mounting screw is inserted into the screw insertion groove, and the setting can be easily performed.

According to claim 7, in claim 6,
Since the operation handle is provided on the mounting screw, the operation of the mounting screw can be easily performed. In claim 8, in claim 1, each centering member is attached to the support frame via a bearing so as to be slightly movable in the axial direction.

Therefore, according to the present invention, it is possible to absorb a dimensional error and a mounting error of the processing roller. According to a ninth aspect, in the eighth aspect, each centering member is rotatably attached to the support frame via a bearing.

Therefore, in the ninth aspect, the processing roller can be smoothly rotated even if the processing roller and the shaft thereof are in a fixed relationship. In claim 10,
In the first aspect, a stopper is provided in the engagement concave portion for restricting rotation of the mounting bolt at a predetermined angle with respect to the engagement protrusion.

Therefore, in the tenth aspect, the range of rotation of the engaging projection can be confirmed by the feeling transmitted to the hand. According to the eleventh aspect, in the first aspect, a wire traveling motor is attached to the fixed frame so as to be located substantially at the center surrounded by the rotation axes of the plurality of processing rollers, and a toothed pulley is attached to the motor shaft of the motor. A toothed pulley for providing rotation to one of a plurality of processing rollers is provided, a toothless pulley is provided for the other rollers, and a double-sided toothed belt is provided with a motor shaft having a toothed outer surface. Over the pulley,
The inner side is wound around a toothed pulley and a toothless pulley provided on the roller, and the rotation of the motor is transmitted to only one roller via the toothed belt and the toothed pulley. A drive structure that causes slippage in transmission by a pulley without the drive.

Accordingly, in the eleventh aspect, the wire running motor is provided at the center of the processing roller, and the drive system can be constituted by one belt, so that the structure becomes compact. Also, when winding the wire between the rollers,
The driving force of the motor can be transmitted to all the rollers. On the other hand, when the workpiece is processed, the other rollers can slide between the belt and the belt, so that a smooth rotation operation can be performed while maintaining a constant tension by the running force of the wire.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 1 and 2, the cutting mechanism 11 is mounted on an apparatus base 12. The cutting mechanism 11 includes one processing driving roller 13 and two processing driven rollers 14 extending in parallel, and annular grooves 13a and 14a are formed on their outer circumferences at a predetermined pitch. In the drawings, the number of the annular grooves 13a and 14a is smaller than the actual number for easy understanding.

The wire 15 made of one wire is continuously wound around each of the annular grooves 13a and 14a of the processing rollers 13 and 14. The wire traveling motor 16 is mounted on the apparatus base 12 via a fixed frame 17.
The pulleys 34, 35, 36 and the belt 3
The rollers 13 and 14 for processing are rotated via 7 and the like.
The rotation of the processing rollers 13 and 14 causes the wire 15 to run at a predetermined running speed. The traveling of the wire 15 is repeated so as to advance forward by a fixed amount (for example, 10 m) and retreat by a fixed amount (for example, 9 m), and to move forward stepwise as a whole.

A work supporting mechanism 19 is supported by a column 20 erected on the apparatus base 12 so as to be vertically movable so as to be located above the cutting mechanism 11, and a work 21 made of a brittle material is provided below the column 20. Is set detachably. The work elevating motor 22 is disposed on the column 20, and the work support mechanism 19 is vertically moved by the motor 22 via a ball screw (not shown) or the like.

During the operation of the wire saw, the work supporting mechanism 19 is lowered toward the cutting mechanism 11 while the wire 15 is running between the processing rollers 13 and 14 of the cutting mechanism 11. At this time, an aqueous or oily slurry containing loose abrasive particles is supplied onto the wire 15 by a slurry supply mechanism (not shown), and the work 21 is pressed against the wire 15 to come into contact therewith, and the work 21 is sliced by the lapping action. Machined.

The reel mechanism 23 is mounted on the apparatus base 12, and is a feed reel 24 for feeding the wire 15.
And a winding reel 25 for winding the wire 15. A pair of reel rotation motors 26 and 27 each composed of a servomotor whose rotation direction and rotation speed can be changed are arranged on the apparatus base 12, and reels 24 and 25 are connected to their motor shafts via a transmission mechanism (not shown). Are linked.

The traverse mechanism 28 includes the reel mechanism 23
Is mounted on the device base 12 adjacent to the
The feeding of the wire 15 from the wire 4 and the winding of the wire 15 to the take-up reel 25 are guided while traversing up and down. The two reels 24, 2 of the reel mechanism 23
5, the wire 15 is paid out from the pay-out reel 24 to the cutting mechanism 11, and the processed wire 1 is
5 is wound on a take-up reel 25.

The tension applying mechanism 29 and the guide mechanism 30
It is arranged between the reel mechanism 23 and the cutting mechanism 11. Then, the processing rollers 13 and 14 of the cutting mechanism 11
Both ends of the wire 15 wound between them are hung on the tension applying mechanism 29 via the respective guide rollers 31 of the guide mechanism 30. In this state, a predetermined tension is applied to the wire 15 between the processing rollers 13 and 14 by the tension applying mechanism 29.

The tension reducing mechanism 32 is disposed between the reel mechanism 23 and the tension applying mechanism 29, and includes a pair of rotating rollers 33. The wire 15 is wrapped around these rotating rollers 33, and by rotating both rotating rollers 33, the tension mechanism 29 is moved from the tension mechanism 29 to the reel mechanism 23.
The tension of the wire 15 which spreads to each of the reels 24 and 25 is reduced.

Next, the support structure of the processing rollers 13 and 14 will be described in detail. As shown in FIGS. 1, 3, 4 and 6, the processing rollers 13, 14 are cantilevered at predetermined intervals on the front surface of the fixed frame 17 via roller shafts 13b, 14b at the base end. And rotatably supported. The processing rollers 13 and 14 include a roller shaft 13b,
14b can be extracted.

As shown in FIGS. 2 and 3, the wire running motor 16 is mounted on the rear surface of the fixed frame 17 so as to be located substantially at the center between the rotation axes of the processing rollers 13 and 14. . The toothed drive pulley 34 is fixed to the motor shaft 16a of the wire traveling motor 16, and a toothed driven pulley 35 is attached to the roller shaft 13b of the processing drive roller 13 so as to correspond to the drive pulley 34, A toothless driven pulley 36 is attached to the roller shaft 14b of both the driven rollers 14 for processing.

An endless double-sided toothed belt 37 is mounted on the toothed driving pulley 34, the toothed driven pulley 35, and the toothless driven pulley 36, and a plurality of toothed driving pulleys 34 mesh with the outer surface thereof. The teeth 37a are formed, and a number of teeth 37b meshing with the toothed driven pulley 35 are formed on the inner surface. The rotation of the wire running motor 16 causes the toothed drive pulley 34 and the belt 37 to rotate.
The processing drive roller 13 is positively rotated via the toothed driven pulley 35, and a slip is generated between the belt 37 and the toothless driven pulley 36, and the processing drive roller 13 travels. Wire 1
5, the both driven rollers 14 are rotated in conjunction with each other.

It is to be noted that the belt 37 moves through all the pulleys 34 and 36 only when the wire 15 is wound around the processing rollers 13 and 14.
4 can be transmitted.

As shown in FIGS. 4 to 6, a fixed bracket 38 is fixed to the side surface of the column 20, and a fixed shaft 39 and a pair of positioning seats 40 are projected from the front surface thereof. The support frame 41 is rotatably supported by the fixed shaft 39 via the collar 42 and movably in the axial direction of the coaxial 39, and is prevented from falling off by the front end flange 39 a of the fixed shaft 39. Also, three support cylinders 4 are provided on the outer periphery of the support frame 41.
3 are arranged at equal intervals, and a recess 4 is formed at the outer edge of the support frame 41 between the support cylinder portions 43 adjacent to each other.
4 are formed. When the processing rollers 13, 14 are pulled out from the roller shafts 13 b, 14 b while the support frame 41 is rotated to some extent, the recess 44 prevents the support frame 41 from interfering with the extraction path of the processing rollers 13, 14. It is formed in order to make. On the front surface of the support frame 41, a handle 44a for moving the support frame 41 in and out is fixed.

As shown in FIGS. 5 and 7, fixed portions 45 are formed on both sides of the support frame 41, and a regulated plate 45a having an upper surface as a regulated surface is fixed on the upper portion thereof. A regulating surface 40a is formed on the lower surface of the positioning seat 40. The engagement between the regulated surface and the regulating surface 40a positions the support frame 41 at a predetermined rotation angle. A screw hole 45b is formed in the fixing portion 45, and an attachment screw 46 having an operation handle 46a is formed in the screw hole 45b.
Are screwed together. On the other hand, the positioning seat 40 is formed with a screw insertion groove 40b which is long in the movement direction of the support frame 41 and has an open front end, and the intermediate portion of the mounting screw 46 is inserted into the screw insertion groove 40b.

Therefore, the regulated plate 45a is moved to the regulating surface 40a.
If the support frame 41 is moved to the rear roller support position in a state where the
b, 14b. In this state, the mounting screw 46 is simultaneously inserted into the screw insertion groove 40b from the front end opening, and corresponds to the screw hole 45b of the fixing portion 45. Then, from this state, the mounting screw 46 is inserted into the screw hole 45b.
As a result, the regulated surface is fixed to the regulating surface 40a, and the support frame 41 is positioned and fixed at a predetermined position with respect to the fixing bracket 38.

As shown in FIGS. 6, 8 and 9, a tapered shaft portion 47 having a tapered outer peripheral surface is provided with a roller shaft 13b,
4b, the end portions of the roller shafts 13b, 14b and the cover body 4 fitted on the shafts 13b, 14b.
7a. Each of the shaft portions 13b, 14
An engagement recess 48 is formed in the end b so as to be located at the end face. The cover body 47a is formed with an insertion / removal hole 48a as an insertion hole corresponding to the engagement recess 48, and the insertion / removal hole 48a has a locking portion 48b smaller than the opening of the engagement recess 48, And a pair of insertion portions 48c extending from the locking portion 48b. A pair of stopper pins 48d as a pair of stoppers are fixed inside the engagement recess 48 at an interval of about 180 degrees.

The centering member 51 is rotatably mounted in each of the support cylinder portions 43 of the support frame 41 via a roller bearing 52 and is slightly movable in the axial direction with respect to the support frame 41. A tapered surface 51 a that can be connected to the outer peripheral surface of the tapered shaft portion 47 is formed on the circumference. The lock nut 53 is provided in each centering member 51 so as to be movable in the axial direction and relatively rotatable, and an operation handle 55 is attached to the outer periphery thereof.

As shown in FIGS. 6, 8 and 9, a mounting bolt 49 is screwed into the locking nut 53, and one end of the mounting bolt 49 is slightly smaller than the insertion hole 48a.
And an operating handle 54 at the other end. The engagement projection 49b is housed in the engagement recess 48, and the engagement projection 49b is formed with a pair of engagement portions 49c. Then, the engagement portion 49c of the engagement protrusion 49b and the insertion / removal hole 4 are formed.
With the insertion portions 48c of 8a aligned, the engagement projections 49
b is inserted through the insertion hole 48a. In addition, the engaging projection 4
9b in the engagement recess 48, the engagement projection 49
By rotating b in one direction, the engaging portion 49c is engaged with the stopper pin 48d, and further rotation is restricted and regulated in a state corresponding to the locking portion 48b. Further, by rotating the engaging projection 49b in the other direction from this state, the engaging portion 49c is engaged with the stopper pin 48d, and further rotation is restricted in a state corresponding to the locking portion 48b, thereby restricting. Is done.

When the mounting bolt 49 is rotated in the tightening direction with respect to the nut 53 by the operation handle 54, the engaging projection 49b of the mounting bolt 49 is used.
Is pressed against the inner surface of the cover body 47a to form the tapered shaft portion 47.
Are pressed into contact with the tapered surface 51a of the centering member 51, and the free ends of the processing rollers 13, 14 are centered at predetermined positions. The operating bolt 54 allows the mounting bolt 49 to be used.
Is rotated in a direction to loosen the locking nut 53, the connection between the tapered shaft portion 47 and the tapered surface 51a of the centering member 51 is released.

When the lock nut 53 is tightened with the operation handle 55 in a state where the tapered shaft portion 47 is pressed and connected to the tapered surface 51 a of the centering member 51, the tapered shaft portion 47 is fixed to the centering member 51. It is locked in a state of connection with the tapered surface 51a.

As shown in FIG. 5, marks 5 are provided on the outer surface of the support cylinder 43 and the outer surface of the operation handle 54, respectively.
6, 57 are attached. These marks 56, 57
The engagement protrusion 49b and the cover body 47a coincide with the insertion / removal hole 48a and the engagement protrusion 49b is engaged with one stopper pin 48d in the engagement recess 48, and the processing roller 13,
14 shows the position where 14 is connected to the support frame 41 via the tapered shaft portion 47 and the like.

Next, the operation of the wire saw configured as described above will be described. By the way, in operation of this wire saw, the engaging projection 49 of the mounting bolt 49 is used.
b and the cover roller 47a by pressing, the processing roller 13,
The 14 tapered shaft portions 47 are connected to the centering member 51 of the support frame 41, and the mounting bolts 49 are locked in a connected state by the locking nuts 53. Therefore, the processing rollers 13 and 14 are held at a predetermined position between the fixed frame 17 and the support frame 41.

In this state, the operation of the apparatus causes the wire 15 to be unwound from the unwinding reel 24 of the reel mechanism 23 and to be advanced in a stepwise manner between the processing rollers 13 and 14 of the cutting mechanism 11, and then to be wound up. It is wound by 25. Then, by a slurry supply mechanism (not shown),
While the slurry containing loose abrasive particles is being supplied onto the wire 15 between the processing rollers 13 and 14, the work 21 is pressed against the wire 15 by the lowering of the work support mechanism 19. Thereby, the work 21 is cut to a predetermined thickness.

As described above, when the processing of the work 21 is repeatedly performed, the annular grooves 13a and 14a on the outer periphery of each of the processing rollers 13 and 14 are damaged by abrasion or the like. For this reason,
It is necessary to remove the processing rollers 13 and 14 from the fixed frame 17 and re-cut the annular grooves 13a and 14a, or replace the processing rollers 13 and 14 with new ones.

In this case, the free ends of the processing rollers 13 and 14 are disengaged from the support frame 41 by the following operation. That is, when removing the processing rollers 13 and 14, first, while holding the operation handles 54 of the mounting bolts 49 corresponding to the three processing rollers 13 and 14, the operation handle 55 of the lock nut 53 is held. To the left. For this reason, the mounting bolt 49 moves to the back, and the pressure contact between the engagement protrusion 49 b and the cover body 47 a of the tapered shaft portion 47 is released, and the space between the tapered shaft portion 47 and the centering member 51 is loosened. Next, each mounting bolt 49 is rotated counterclockwise, and the engaging projection piece 49b at the tip is brought into contact with another stopper pin 48d which has been engaged up to then. By doing so, the engagement projection 49b is positioned at an angle corresponding to the insertion / removal hole 48a.

Next, the mounting screw 46 for fixing the support frame 41 to the fixing bracket 38 is moved to the operation handle 46 thereof.
Loosen by the operation of a. Therefore, the mounting screw 46 is raised, the flange 46b is separated from the positioning seat 40, and the space between the regulating surface 40a and the regulated surface is loosened. And
In this state, the support frame 41 can be pulled forward by the handle 44a of the support frame 41.

Therefore, the support frame 41 can be pulled out forward, and the mounting screw 46 comes out of the screw insertion groove 40b of the positioning seat 40. Accordingly, the support frame 41 is mounted on the roller shaft 1
The support frame 41 becomes rotatable completely away from the end portions 3b and 14b. At this time, the support frame 41 is prevented from falling off at the end flange 39 a of the fixed shaft 39, and does not fall off from the fixed shaft 39.

Therefore, as shown in FIG. 10, if the concave portion 44 is made to correspond to the ends of the processing rollers 13 and 14 by rotating the support frame 41 clockwise or counterclockwise in this state, the processing rollers 13 Fourteen ends are exposed forward. For this reason, as shown in FIG.
Can be extracted forward, and the processing rollers 13 and 14 can be removed.
The processing rollers 13 and 14 can be removed for maintenance or discarded.

Next, in order to mount new processing rollers 13 and 14, the following procedure is performed in the reverse order.
That is, the new processing rollers 13 and 14 or the processing rollers 13 and 14 after the maintenance are moved to the roller shafts 13 b and 1.
4b.

After the processing rollers 13 and 14 are mounted on the respective roller shafts 13b and 14b, the support frame 41 is returned to a regular angle with the handle 44a. Then, it is checked whether or not the mounting screw 46 is at an angle corresponding to the screw insertion groove 40b, and the support frame 41 is pushed rearward.

For this reason, the centering member 51 is guided along the taper by the tapered shaft portion 47 of the roller shafts 13b and 14b. Then, the engaging projection 49b at the tip of the mounting bolt 49
Is inserted into the engagement recess 48 through the insertion hole 48a.

Next, both mounting screws 46 of the support frame 41 are tightened. Therefore, the head of the mounting screw 46 is
, And the support frame 41 is fixed to the fixing bracket 38.

Then, the mounting bolt 49 is rotated clockwise to bring the engaging projection 49b into contact with one stopper pin 48d. In this state, if the locking nut 53 is rotated clockwise and tightened, the mounting bolt 49 moves forward. For this reason, the engaging projection 49b and the inner surface of the cover 47a are press-fitted, the centering member 51 and the tapered shaft 47 are connected, and the processing rollers 13, 14 are arranged at predetermined positions. Therefore,
In this state, the machining operation of the wire saw can be started.

The effects that can be expected from the above embodiment will be described below. In the wire saw of this embodiment, when the processing rollers 13 and 14 are detached for maintenance or replaced with new ones, the processing roller is rotated by rotating one mounting bolt 49. 1
The 3 and 14 taper shaft portions 47 can be connected to or separated from the centering member 51. Therefore, each processing roller 1
The free ends of the processing rollers 13 and 14 can be efficiently attached to and detached from the support frame 41 by a simple operation in a short time.

Locking nut 53 and mounting bolt 4
9 can be easily performed by operating the operation handles 54 and 55. The flange 39a of the fixed shaft 39 prevents the support frame 41 from falling off, and the processing rollers 13, 14 can be easily attached and detached only by moving the support frame 41 along the fixed shaft 39 and rotating it.

Since the outer edge of the support frame 41 is formed in a concave shape, the processing rollers 13 and 14 can be easily attached and detached without being obstructed by the support frame 41. The support frame 41 is engaged with the regulated surface and the regulating surface 40a.
Are positioned at a predetermined angle, the processing rollers 13,
14 does not need to be performed.

If the support frame 41 is arranged at a predetermined position on the positioning seat 40, the processing rollers 13, 14 are positioned, the mounting screws 46 are inserted into the screw insertion grooves 40b, and the setting thereof can be easily performed. it can.

The rotating operation of the mounting screw 46 can be easily performed by the operation handle 46a. -Each centering member 51 is supported by the support frame 4 via a bearing 52.
Since it is mounted so as to be slightly movable in the axial direction with respect to 1, the dimensional errors and mounting errors of the processing rollers 13 and 14 can be absorbed.

Since the centering members 51 are rotatably mounted on the support frame 41, even if the processing rollers 13, 14 and their shafts 13b, 14b are in a fixed relationship, the processing The rollers 13 and 14 can be smoothly rotated.

Since the stopper pin 48d for regulating the rotation of the engaging projection 49b of the mounting bolt 49 at a predetermined angle is provided in the engaging recess 49b, the rotation range of the engaging projection 49b is transmitted to the hand. It can be easily confirmed by touch.

A wire running motor 16 is provided at the center of the plurality of processing rollers 13 and 14, and a toothed drive pulley 34 is provided on a motor shaft 16 a of the motor 16. Of the working rollers 13 and 14, one working drive roller 13 is provided with a toothed driven pulley 35, and the other working driven roller 14 is provided with a toothless driven pulley 36. The double-sided toothed belt 37 is wound around the toothed drive pulley 34 of the motor shaft 16a on the outer side and the pulleys 34 and 36 of the processing rollers 13 and 14 on the inner side. Therefore, the drive system can be constituted by one belt 37, and the structure is compact. Further, at the time of winding the wire 15 between the processing rollers 13 and 14, the driving force of the wire traveling motor 16 can be transmitted to all the rollers 13 and 14.

By providing the toothless pulley 36 for the two processing rollers 13 and 14, when an abnormal load occurs for some reason, power transmission between the toothless pulley 36 and the toothed belt 37. Slip occurs. Therefore, at the time of processing, the two processing rollers 13 and 14 are smoothly rotated by the traveling force of the wire 15.

The present invention can be embodied with the following modifications. The present invention is embodied in a wire saw having two or four or more processing rollers.

The connection between the wire running motor 16 and the processing rollers 13 and 14 is performed by gears. In this case, it is desirable to interpose a slip clutch that generates slip when a load equal to or greater than the set value acts on an appropriate location.

[0068]

The present invention is configured as described above, and has the following effects. According to the first aspect of the present invention, when the processing roller is exchanged,
The processing roller can be easily attached and detached.

According to the second aspect of the present invention, the rotation operation of the lock nut and the mounting bolt can be easily performed by the handle. According to the third aspect of the present invention, the processing roller can be easily attached and detached only by moving the support frame along the fixed axis and rotating it.

According to the fourth aspect of the present invention, the processing roller can be easily attached and detached without being disturbed by the support frame. According to the fifth aspect of the present invention, the support frame is positioned at a predetermined angle by the engagement between the regulated surface and the regulated surface, and there is no need to perform the work of positioning the processing roller.

According to the sixth aspect of the present invention, if the support frame is arranged at a predetermined position of the positioning seat, the mounting screw is inserted into the screw insertion groove, and the support frame can be easily set.

According to the seventh aspect of the invention, the operation of rotating the mounting screw can be easily performed by the operation handle. According to the eighth aspect of the invention, since the support frame is slightly movable in the axial direction, it is possible to absorb a dimensional error, a mounting error, and the like of the processing roller.

According to the ninth aspect of the present invention, since each centering member is rotatable with respect to the support frame, the processing roller can be smoothly rotated. According to the tenth aspect of the present invention, the rotation range of the mounting bolt can be easily confirmed by the touch transmitted to the hand by the stopper pin.

According to the eleventh aspect of the present invention, the motor for wire running is provided at the center of the processing roller, and the drive system can be constituted by one belt, so that the structure becomes compact. Further, at the time of winding the wire between the rollers, the driving force of the motor can be transmitted to all the rollers. On the other hand, when the workpiece is processed, the other rollers can slide between the belt and the belt, so that a smooth rotation operation can be performed while maintaining a constant tension by the running force of the wire.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a wire saw of the present invention.

FIG. 2 is a plan view of the wire saw.

FIG. 3 is a sectional view showing a power transmission configuration.

FIG. 4 is a plan view showing a processing roller.

FIG. 5 is a front view showing a configuration for supporting a processing roller.

FIG. 6 is a cross-sectional view illustrating a configuration for supporting a processing roller.

FIGS. 7A and 7B are partial cross-sectional views showing a support structure of a support frame, and FIG. 7C is a plan view thereof.

FIG. 8 is a sectional view showing an end surface of a processing roller.

FIG. 9 is a sectional view showing a stopper pin.

FIG. 10 is a simplified diagram showing a state where a support frame is rotated.

FIG. 11 is a plan view showing a state in which a processing roller is extracted.

FIG. 12 is a front view of a main part showing a conventional roller supporting configuration.

FIG. 13 is a partially enlarged sectional view of the same.

[Explanation of symbols]

11: cutting mechanism, 13: processing drive roller, 13b: roller shaft, 14: driven roller for processing, 14b: roller shaft,
15 ... wire, 16 ... wire running motor, 16a ... motor shaft, 17 ... fixed frame, 19 ... work support mechanism, 21 ...
Work, 34: toothed drive pulley, 35: toothed driven pulley, 36: toothless driven pulley, 37: belt, 37
a, 37b: teeth, 38: bracket, 39: fixed shaft, 4
0a: regulating surface, 40b: screw insertion groove, 41: support frame, 4
Reference numeral 3 denotes a support cylinder portion, 44 denotes a recess, 45a denotes a regulated plate having an upper surface as a regulated surface, 46 denotes a mounting screw, 46a denotes an operation handle, 47 denotes a tapered shaft portion, 48 denotes an engagement recess, and 48a denotes an insertion hole. Insertion and removal holes, 48d: stopper pins as stoppers, 49: mounting bolts, 49b: engagement projections, 51 ...
Centering member, 51a: tapered surface, 52: roller bearing as bearing, 53: locking nut, 54: operating handle, 55: operating handle.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B24B 27/06 B28D 5/04

Claims (11)

(57) [Claims] 1. A wire saw in which a wire is wound at a predetermined pitch between a plurality of processing rollers, and a workpiece is brought into contact with the wire while the wire is running, thereby performing the processing. The base end of the processing roller is rotatably supported by a fixed frame via a roller shaft, and the other end of each processing roller is rotatably supported by a removable support frame via a roller shaft. The other end of the shaft is formed with a tapered shaft portion and an engagement concave portion having an insertion hole opened at an end surface axis of the tapered shaft portion. The support frame has a tapered surface corresponding to the tapered shaft portion of each roller shaft. A centering member having a centering member is provided, and a locking nut is rotatably mounted on the center of the centering member so as to be rotatable and movable in the axial direction. Further, the locking nut can be inserted at a predetermined angle with respect to the insertion hole. And the person in charge In the recess, a mounting bolt having an engaging protrusion at its tip, which is axially constrained at a different angle, is screwed. After the mounting bolt is inserted into and engaged with the engaging recess of the tapered shaft portion, the lock nut is engaged. The wire saw is characterized in that the taper shaft portion and the centering member are integrally connected by tightening. 2. The wire saw according to claim 1, wherein each of the locking nut and the mounting bolt is provided with an operation handle on an outer surface side of the support frame. 3. The wire saw according to claim 1, wherein the support frame is supported on a fixed shaft extending in parallel with the processing roller so as to be rotatable and movable in the axial direction and in a retaining state. 4. An outer edge portion between adjacent centering members of the support frame is formed in a concave shape so as not to interfere with a path where a processing roller is extracted from a roller shaft in a state where the support frame is rotated by a certain angle. The wire saw according to claim 3, wherein 5. A fixed surface for determining an angle is formed on the support frame, and a fixed bracket for supporting the fixed shaft is in sliding contact with the regulated surface when the support frame is moved to a roller support position. The wire saw according to claim 4, wherein a regulating surface for positioning the frame at a predetermined angle is formed. 6. The regulated surface is screwed with the tip of a mounting screw, and the regulating surface is formed with a screw insertion groove which is long in the direction of movement of the support frame and has one end opened. 6. The wire saw according to claim 5, wherein the regulated surface is fixed to the regulating surface by being inserted into the groove and tightening the mounting screw after the angular positioning. 7. The wire saw according to claim 6, wherein the mounting screw is provided with an operation handle. 8. The centering member is mounted on the support frame via a bearing so as to be slightly movable in the axial direction.
The wire saw according to 1. 9. The wire saw according to claim 8, wherein each centering member is rotatably attached to the support frame via a bearing. 10. The wire saw according to claim 1, wherein a stopper for restricting rotation at a predetermined angle with respect to the engaging projection of the mounting bolt is provided in the engaging recess. 11. A wire running motor is mounted on the fixed frame so as to be located substantially at the center surrounded by the rotation axes of the plurality of processing rollers, and a toothed pulley is provided on the motor shaft of the motor. One of the rollers is provided with a toothed pulley for imparting rotation, the other roller is provided with a toothless pulley, and a double-sided toothed belt is wound around the outer surface side of the toothed pulley of the motor shaft. The side is wrapped around a toothed pulley and a toothless pulley provided on the roller, and the rotation of the motor is transmitted to only one roller via the toothed belt and the toothed pulley, and there is no tooth for the other rollers. The wire saw according to claim 1, wherein the wire saw has a drive structure in which transmission is caused by a pulley.