JP4984076B2 - Blade mounting jig set and mounting method - Google Patents

Description

  The present invention relates to an attachment jig set and attachment method for a blade of a band saw cutting apparatus for cutting a silicon ingot or the like pulled up by the Czochralski method (CZ method) or the like.

A silicon ingot manufactured by the CZ method or the like has a cone-shaped end portion (top portion and tail portion) in a cylindrical body portion. In the processing of the silicon ingot, these cone-shaped end portions are separated to form only a cylindrical body portion, and the body portion is cut into a plurality of blocks as necessary. Next, slicing is performed to make the block into a wafer.
When cutting the cone-shaped end portion or cutting the body portion into a plurality of blocks, an inner peripheral blade slicer, an outer peripheral blade slicer, and the like have been often used. With the recent increase in wafer diameter, many band saws have been used.

Here, FIG. 6 shows an outline of an example of a conventional general band saw cutting device.
As shown in FIG. 6, in the band saw cutting device 111, an endless belt-like blade 106 composed of a blade abrasive grain portion 110 formed by adhering diamond abrasive grains to an end portion of a thin blade base metal 109 has a pulley 107. , 107 ′ (see Patent Document 1). The blade 106 is driven by the rotation of the pulleys 107 and 107 ′, and the ingot 120 is cut by the blade abrasive grain portion 110 of the blade 106.

  With the recent increase in size of wafers, the band saw cutting apparatus used is also increasing in size. For example, when an ingot having a diameter of 300 mm is cut as described above, a large pulley having an outer diameter of, for example, 600 to 700 mm is used. When attaching a blade to such a band saw cutting apparatus, an operator generally performs an operation of stretching between the pulleys 107 and 107 ′ while supporting the blade 106.

Further, in order to improve the product yield by reducing the machining allowance at the time of cutting the ingot, a thin blade has been used.
When attaching such a large and thin blade to a band saw cutting device, the blade itself does not have the rigidity to maintain the shape, so several workers can support it while supporting several parts of the blade. It was necessary to do it, and the work was complicated. Furthermore, when the blade is attached to the pulley, if the blade is slightly displaced from the attachment position, the blade base metal may bend and damage the blade when tension is applied between the pulleys. There was a thing.

JP-A-9-85530

  The present invention has been made in view of the above problems, and provides a blade mounting jig set and a mounting method that can be easily mounted on a band saw cutting device without damaging even a very large and thin blade. The purpose is to do.

  In order to achieve the above object, the present invention has at least two pulleys that rotate around an axis and a blade that is stretched between the pulleys, and the pulley moves in a direction that expands and contracts the distance between the axes. A blade attachment jig set for attaching the blade to a possible band saw, comprising at least two guide pins attached coaxially to the pulley shaft, and a plurality of support members for supporting side surfaces of the attachment blade. A jig body having two guides provided with holes for inserting the guide pins, and two stoppers engaged with the guide pins, the blade being placed on the jig body Is supported by the support member, the guide pin is inserted into the guide hole of the jig body, and the blade is attached to the pulley. The jig main body is lifted and the jig is fixed at a predetermined height position by engaging the stopper with the guide pin. Item 1).

  Thus, the blade attachment jig set of the present invention has at least two guide pins attached coaxially to the pulley shaft, and a plurality of support members that support the side surfaces of the attachment blade, and the guide pins are inserted. A jig main body having two guides provided with holes to be formed, and two stoppers engaged with the guide pins, the blade is placed on the jig main body and the side surface is supported by the support member, The guide pin is inserted into the guide hole of the jig body, the jig body is lifted so that the blade is attached to the pulley, the stopper is engaged with the guide pin, and the jig is engaged. Since the main body is fixed at a predetermined height, it is possible to suppress the displacement of the blade mounting position, and even a very large and thin blade can be damaged. It has become a thing that can be attached without any easier.

At this time, it is preferable that at least one of the two guides is slidable with respect to the jig main body following the expansion / contraction movement of the pulley between the axes (Claim 2).
As described above, if at least one of the two guides is slidable following the expansion / contraction movement of the pulley between the shafts with respect to the jig body, the pulley can be moved between the shafts. It is possible to prevent the guide pin and the shaft of the pulley from being damaged when the distance is moved in the direction of expanding and contracting.

Further, at this time, the shape of the guide hole of the jig body is a shape in which a hole larger than the maximum outer diameter of the guide pin and the stopper and a hole smaller than the maximum outer diameter of the guide pin and the stopper are connected. (Claim 3).
Thus, the shape of the hole of the guide of the jig body is a shape in which a hole larger than the maximum outer diameter of the guide pin and the stopper and a hole smaller than the maximum outer diameter of the guide pin and the stopper are connected. Thus, when the jig body is fixed at a predetermined height position, the guide pin is inserted into a hole larger than the maximum outer diameter of the guide pin and the stopper of the guide, and then the jig body. Can be horizontally moved to the hole side smaller than the maximum outer diameter, and the jig body can be fixed at a predetermined height position with a simple structure, and the blade can be arranged at the attachment position.

Further, at this time, the guide pin can have a plurality of grooves for fitting with the stopper and making it possible to change a height position for fixing the jig body.
As described above, the guide pin has a plurality of grooves that can be fitted to the stopper and can change a height position for fixing the jig body, so that the jig body can be changed to any one of the above. After fixing at the position of one groove, the jig body can be lifted and fixed so that the blade is attached to the pulley. By doing so, the distance to lift the jig body can be reduced, and the jig body can be fixed at a predetermined height position and the blade can be easily arranged at the attachment position.

  The present invention also includes a band saw having at least two pulleys rotating around an axis and a blade stretched between the pulleys, the pulley being movable in a direction in which the distance between the axes is expanded and contracted. A blade mounting method for reducing the distance between the shafts of the pulley and attaching the blade to the pulley, and extending the distance between the pulley shafts to stretch the blade, and at least the shaft of the pulley A jig body having two guide pins attached coaxially, a plurality of support members for supporting side surfaces of the attached blade, and provided with two guides provided with holes for inserting the guide pins, and the guide pins. Using a blade mounting jig set composed of two stoppers to be joined, the blade is placed on the jig body and the side surface is supported by the support member. Insert the guide pin into the guide hole of the jig body, lift the jig body so that the blade is attached to the pulley, and engage the stopper with the guide pin. A blade attachment method is provided, wherein the blade body is attached with the jig body fixed at a predetermined height (Claim 5).

  As described above, at least two guide pins attached coaxially to the pulley shaft, and a plurality of support members that support side surfaces of the attached blade, and two guides provided with holes for inserting the guide pins are provided. Using a blade mounting jig set comprising a jig main body and two stoppers engaged with the guide pins, the blade is placed on the jig main body and the side surface is supported by the support member, and the jig The guide pin is inserted into a guide hole of the main body, the jig main body is lifted so that the blade is attached to the pulley, the stopper is engaged with the guide pin, and the jig main body is By fixing the blade at a predetermined height position and attaching the blade to the pulley, it is possible to suppress the displacement of the blade attachment position. Even thinned blade can be easily attached without damaging.

At this time, it is preferable that at least one of the two guides is slid with respect to the jig body following the expansion / contraction movement of the pulley between the axes (Claim 6).
Thus, if at least one of the two guides is slid with respect to the jig body following the expansion / contraction movement of the pulley's inter-axis distance, the pulley expands / contracts the distance between the shafts. It is possible to prevent the guide pin and the shaft of the pulley from being damaged when moved in the direction of movement.

At this time, the shape of the guide hole of the jig body is a shape in which a hole larger than the maximum outer diameter of the guide pin and the stopper and a hole smaller than the maximum outer diameter of the guide pin and the stopper are provided in a row. The guide pin is inserted into a hole larger than the maximum outer diameter of the guide pin and the stopper of the guide, and then the jig body is horizontally moved to the hole side smaller than the maximum outer diameter, and the stopper is It can engage with a guide pin (Claim 7).
As described above, the shape of the guide hole of the jig body is a shape in which a hole larger than the maximum outer diameter of the guide pin and the stopper and a hole smaller than the maximum outer diameter of the guide pin and the stopper are connected. The guide pin is inserted into a hole larger than the maximum outer diameter of the guide pin and the stopper of the guide, and then the jig body is horizontally moved to the hole side smaller than the maximum outer diameter, and the stopper is By engaging with the guide pin, the jig body can be fixed at a predetermined height position with a simple structure, and the blade can be arranged at the attachment position.

Further, at this time, as the guide pin, a guide pin having a plurality of grooves for fitting to the stopper and changing the height position for fixing the jig body is used. After fixing at the position of the one groove, the jig body can be lifted and fixed so that the blade is attached to the pulley.
Thus, as the guide pin, one having a plurality of grooves for fitting the stopper and changing the height position for fixing the jig body can be used. After fixing at the position of one groove, by lifting and fixing the jig body so that the blade is attached to the pulley, the distance to lift the jig body can be reduced, The jig main body can be fixed at a predetermined height position and the blade can be easily arranged at the attachment position.

  In the present invention, in attaching the blade to the band saw cutting device, the blade attachment jig set includes at least two guide pins attached coaxially with the pulley shaft, and a plurality of support members supporting the side surface of the attachment blade. A jig body having two guides provided with holes for inserting the guide pins, and two stoppers engaged with the guide pins, and using the blade mounting jig set, Place the jig body on the jig body so that the side surface is supported by the support member, the guide pin is inserted into the guide hole of the jig body, and the blade is attached to the pulley. Lift up, engage the stopper with the guide pin, fix the jig body at a predetermined height position, and attach the blade. Mounting position of the de-6 can be prevented from being displaced, a very large and without damaging even thinned blade can be easily attached.

Hereinafter, embodiments of the present invention will be described, but the present invention is not limited thereto.
Conventionally, when attaching a thin blade having a blade base metal thickness of, for example, 0.7 mm or less to a large-sized band saw cutting device, it was necessary to perform attachment while supporting several portions of the blade by several operators. In addition, if the attachment position of the blade is slightly shifted, the blade base metal may bend and damage the blade when tension is applied to the blade between the pulleys. In addition, a very thin blade with a blade base metal thickness of 0.3 mm was very difficult to attach by a manual operation by a conventional worker.
In order to solve such a problem, the present inventor has intensively studied. As a result, in order to attach even a very large and thin blade without hurting, the blade is moved to the mounting position while supporting the blade so that it does not deform using a blade mounting jig set on which the blade is mounted. The present invention has been completed by conceiving that it is only necessary to mount it.

FIG. 1 is a schematic view showing an example of a blade mounting jig set according to the present invention.
As shown in FIG. 1, the blade mounting jig set includes at least two guide pins 2 and 2 ′ that are mounted coaxially with the shafts 8 and 8 ′ of the pulleys 7 and 7 ′, and a plurality of blades that support the side surfaces of the blade 6 to be mounted. A jig body 1 having two guides 3 and 3 ′ having holes 16 and 16 ′ for inserting the guide pins 2 and 2 ′, and a blade 6 placed thereon, and a guide pin. It consists of two stops 4, 4 'engaged with 2, 2'.

FIG. 2 is a schematic view of a band saw cutting apparatus for attaching a blade using the blade attachment jig set of the present invention.
As shown in FIG. 2, the band saw cutting device 11 includes an endless belt-like blade 6 constituted by a blade abrasive grain portion 10 formed by adhering diamond abrasive grains to an end portion of a thin blade base 9 and a pulley 7. , 7 '. The blade 6 is driven around by the rotation of the pulleys 7 and 7 ′, and the ingot is cut by the blade abrasive grain portion 10 of the blade 6.
The pulleys 7 and 7 'are movable in the direction of expanding and contracting the distance between the pulley shafts 8 and 8'. By reducing the distance between the pulley shafts 8 and 8 ', the blade 6 The blade 6 can be attached to the pulleys 7 and 7 ', and the blade 6 can be stretched by extending the distance between the shafts 8 and 8' of the pulley.
The band saw cutting apparatus for mounting the blade using the blade mounting jig set of the present invention has the same basic configuration as the conventional band saw cutting apparatus as described above, but the pulleys 7 and 7 'have the guide pins. There are holes for attaching 2, 2 '.

In order to mount the two guide pins coaxially with the respective shafts of the two pulleys, for example, a screw is cut from the lower surface of the pulley into the hole of the pulley by a tap or the like, and the guide pin as shown in FIG. It can fix with the screw provided in the upper part.
However, in the present invention, the method for fixing the guide pins and the pulleys is not particularly limited, and the guide pins 2 and 2 ′ may be attached to the pulleys 7 and 7 ′ without being detached when the blade is attached.

As shown in FIG. 1, the jig body 1 is provided with a plurality of support members 5 to support the side surfaces of the blade 6 to be attached.
As described above, when the jig body 1 is provided with a plurality of support members 5 and supports the side surface of the blade 6 to be attached, the blade 6 can be moved to the attachment position of the blade 6 when the blade 6 is moved to the attachment position of the blade 6. It is possible to prevent the blade base 9 of the blade 6 from being deformed before falling off from 1 or being attached to the pulleys 7 and 7 '.
Here, in the example of the blade attachment jig set shown in FIG. 1, support members 5 are provided at six locations of the jig body 1. The number of these supporting members is not particularly limited to this, and the number of supporting members that can stably support the side surface may be appropriately set according to the size of the blade to be attached.

Further, as shown in FIG. 1, the jig body 1 is provided with two guides 3 and 3 ′, and the guides 3 and 3 ′ have holes 16 and 16 ′ for inserting the guide pins, respectively. have.
Here, the positions where the guides 3 and 3 ′ are installed in the jig body 1 are set such that the two guide pins 2 and 2 ′ attached to the pulleys 7 and 7 ′ are respectively inserted into the holes 16 and 16 ′ of the guide. When the stoppers 4 and 4 ′ are inserted and engaged with the guide pins 2 and 2 ′, the position of the blade 6 placed on the jig body 1 is exactly the mounting position. .

  As shown in FIG. 3A, the blade mounting jig set of the present invention is supported by the jig body 1 and the support member 5 so that the blade 6 placed on the jig body 1 is not deformed. The main body 1 is lifted and the blade 6 can be fixed at a position where it is attached to the pulleys 7 and 7 '. By doing so, it is possible to suppress the displacement of the attachment position of the blade 6 when the blade 6 is attached. For example, the thickness of the blade base 9 is 0.7 to 0.3 mm. Even a blade that has been made can be easily mounted without damaging it.

Here, the shape of the jig body 1 is not particularly limited to a plate shape or a pipe shape as long as the blade can be stably placed and supported.
The material of the jig body 1 is not particularly limited as long as it is strong enough to hold the blade 6 and is lightweight so that the jig body can be easily moved. For example, aluminum can be used.

FIG. 3B is a schematic view showing an example of a stopper that can be used in the present invention.
The shape of the stopper 4 can be, for example, a ring shape that can be inserted into the guide pin 2 as shown in FIG. Further, the stopper 4 has a screw-like fixing pin 17 for engaging and fixing with the guide pin 2, and the fixing pin 17 presses against the guide pin 2 to fix the stopper. . The jig main body 1 can be fixed at a predetermined height position by supporting the jig main body 1 from below with the stopper 4.
Here, the fixing pin does not have to be a screw shape. For example, the fixing pin 17 may be pressed against the guide pin 2 by a spring. Furthermore, a hole can also be provided on the guide pin 2 side so that the fixing pin penetrates the hole of the guide pin 2.
In this way, the jig body 1 can be fixed by engaging the stoppers 4, 4 ′ with the guide pins 2, 2 ′.

At this time, it is preferable that at least one of the two guides 3 and 3 ′ is slidable with respect to the jig body 1 following the expansion and contraction movement of the pulley between the axes.
Thus, if at least one of the two guides 3 and 3 ′ is slidable following the expansion and contraction movement of the pulley between the axes relative to the jig body 1, the pulley 7 When the pulleys 7 and 7 'move in the direction of expanding and contracting the distance between the shafts, such as extending the distance between the shafts 7' and extending the blade 6, the guide pins 2, 2 ' Further, the pulley shafts 8 and 8 'can be prevented from being damaged.
FIG. 4 shows an example of a guide that can slide following the expansion / contraction movement of the distance between the axes of the pulleys 7 and 7 ′.
As shown in FIG. 4, the guide 3 is provided with elongated holes 14 at four locations, and bolts 15 fixed to the jig body 1 are respectively inserted into the elongated holes 14. As the position of the bolt 15 moves in the elongated hole 14, the guide 3 can slide with respect to the jig body 1 following the expansion and contraction movement of the pulleys 7 and 7 'between the axes. ing.
Alternatively, a long hole may be provided on the jig body 1 side, and a bolt fixed to the guide 3 may be inserted into the long hole of the jig body 1. Further, the jig body 1 can be extended and contracted.

At this time, as shown in FIG. 5, the shapes of the two guide holes 16 and 16 ′ of the jig body 1 are larger than the maximum outer diameters of the guide pins 2 and 2 ′ and the stoppers 4 and 4 ′. A large hole and a hole smaller than the maximum outer diameter of the guide pins 2, 2 ′ and the stoppers 4, 4 ′ can be formed continuously. Then, the guides 3 and 3 ′ can be installed in such directions that the directions of the large holes of the two guides 3 and 3 ′ are the same.
Thus, the shape of the guide holes 16 and 16 ′ of the jig body 1 is such that the guide pins 2 and 2 ′ and the stoppers 4 and 4 ′ are larger than the maximum outer diameter of the guide pins 2 and 2 ′. In addition, when the jig main body 1 is fixed at a predetermined height position, the guide pins 2 and 2 ′ are fixed to the guide 3 when the jig body 1 is fixed at a predetermined height by forming a hole having a smaller diameter than the maximum outer diameter of the stoppers 4 and 4 ′. 3 'and inserted into a hole larger than the maximum outer diameter of the guide pins 2, 2' and the stoppers 4, 4 ', and then horizontally moved the jig body 1 to the smaller hole side, The stoppers 4 and 4 ′ may be engaged with the guide pins 2 and 2 ′, and the jig body 1 is fixed at a predetermined height position with a simple structure, and the blade 6 is disposed at the attachment position. Can do.

Alternatively, as shown in FIG. 1, the guides may be installed in such directions that the directions of the large holes of the guides 3 and 3 ′ are opposite to each other. In this case, after inserting the guide pins 2 and 2 ′ into the large holes of the guides 3 and 3 ′, the jig body 1 is rotated horizontally and moved to the guide pins 2 and 2 ′, for example, FIG. By engaging the stoppers 4, 4 'as shown in (B), the jig body 1 can be fixed at a predetermined height position.
Thus, if the guides 3 and 3 ′ are installed in such directions that the directions of the large holes of the guides 3 and 3 ′ are opposite to each other, the guide pins 2 and 2 ′ and the stoppers 4 and 4 ′ are connected to the guide 3 and It is possible to make it difficult for the jig body 1 to fall out of the 3 ′ large hole and fall.

At this time, the guide pins 2 and 2 ′ are fitted with the stoppers 4 and 4 ′ and have a plurality of grooves for changing the height position for fixing the jig body 1. Can do.
For example, as shown in FIG. 3C, the groove of the guide pins 2 and 2 'is a groove (blade extension) at least where the blade 6 is attached to the pulleys 7 and 7' to apply tension. The position of the guide pin groove 12) at the position and the groove where the upper end of the blade is below the lower end of the pulley and the blade 6 does not contact the pulleys 7 and 7 '(the guide pin groove 13 at the initial guide mounting position) It can be provided at two locations. Then, the fasteners 4 and 4 ′ as shown in FIG. 3B, for example, are fitted into the groove 13 of the guide pin at the initial guide attachment position to fix the jig body 1, and then the blade extension position is set. The blade 6 can be arranged at the mounting position by changing the height position for fixing the jig body 1 to the position of the groove 12 of the guide pin.
As described above, if the grooves of the guide pins 2 and 2 ′ are provided in two places, that is, the groove 12 of the guide pin at the blade extension position and the groove 13 of the guide pin at the initial guide attachment position, the position of the blade 6 is the pulley 7, The distance at which the jig body 1 is lifted can be reduced so that the jig body 1 can be attached to the position 7 ', and the position at which the jig body 1 is fixed can be easily positioned. The blade 6 can be easily placed in the mounting position by being fixed to the position.

Next, a method for attaching the blade of the present invention will be described.
In the blade attachment method of the present invention, the blade 6 to be attached is placed on the jig body 1 using the blade attachment jig set as described above, and the side surfaces of the blade 6 are supported by the support member 5 of the jig body. Let
Even if the blade 6 is mounted on the jig body 1 and the side surface of the blade 6 is supported by the support member 5 of the jig body 1, even if the blade is large and the base metal is thin, When the jig body 1 is moved to the attachment position of the blade 6, the blade 6 is detached from the jig body 1 and dropped, or the blade base 9 of the blade 6 is deformed before being attached to the pulleys 7 and 7 ′. Can be suppressed.
Then, the jig body 1 is moved, and the two guide pins 2 and 2 ′ attached to the pulleys 7 and 7 ′ are inserted into the guide holes 16 and 16 ′ of the jig body 1, respectively. Further, the jig body 1 is lifted so that the blade 6 is attached to the pulleys 7 and 7 ′ with the distance between the shafts of the pulleys 7 and 7 ′ shortened, and the stoppers 4 and 4 ′ are moved to the guide pins. The jig main body 1 is fixed at a predetermined height position by engaging with 2, 2 ′.

As described above, the jig body 1 is fixed so that the blade 6 is attached to the pulleys 7 and 7 ′, and the blade 6 is attached to the pulleys 7 and 7 ′. 8 ′ is moved to increase the distance between the axes of the pulleys 7 and 7 ′, and the blade 6 is stretched.
Thus, after fixing the jig body 1 so that the position of the blade 6 is attached to the pulleys 7 and 7 ′ and attaching the blade 6 to the pulleys 7 and 7 ′, the shafts 8 and 8 ′ of the pulleys are mounted. The distance between the shafts of the pulleys 7 and 7 ′ is increased by moving the blade 6 and the blade 6 is stretched to prevent the attachment position of the blade 6 from being displaced. Even a very thin blade with a thickness of 0.7 to 0.3 mm can be easily attached without damaging it.

At this time, it is preferable that at least one of the two guides 3 and 3 ′ is slid with respect to the jig body 1 following the expansion and contraction movement of the pulleys 7 and 7 ′ between the axes.
Thus, if at least one of the two guides 3 and 3 ′ is slid with respect to the jig body 1 following the expansion and contraction movement of the pulleys 7 and 7 ′, the pulley When the pulleys 7 and 7 'move in the direction of expanding and contracting the distance between the shafts, such as extending the distance between the shafts 7 and 7' to stretch the blade 6, the guide pins 2, 2 ' Further, the pulley shafts 8 and 8 'can be prevented from being damaged.

At this time, as shown in FIG. 5, the shapes of the two guide holes 16 and 16 ′ of the jig body 1 are larger than the maximum outer diameter of the guide pins 2 and 2 ′ and the stoppers 4 and 4 ′. And the guide pins 2 and 2 'and the stoppers 4 and 4' are formed in a shape having holes smaller than the maximum outer diameter, and the directions in which the large holes of the two guides 3 and 3 'are facing are the same. The guides 3, 3 'can be installed in such a direction. Then, after inserting the guide pins 2 and 2 ′ into the holes larger than the maximum outer diameter of the guide pins 2 and 2 ′ and the stoppers 4 and 4 ′ of the guides 3 and 3 ′, the smaller hole side The stoppers 4, 4 ′ can be engaged with the guide pins 2, 2 ′.
As described above, the shapes of the two guide holes 16 and 16 ′ of the jig main body 1 are made larger than the maximum outer diameter of the guide pins 2 and 2 ′ and the stoppers 4 and 4 ′ and the guide pins 2 and 2, respectively. And the guide pins 2 and 2 'are connected to the guide pins 2 and 2' and the stopper 4 of the guides 3 and 3 '. Simply insert it into a hole larger than the maximum outer diameter of 4 ', move it horizontally toward the smaller hole, and engage the stoppers 4, 4' with the guide pins 2, 2 '. The jig body 1 can be fixed at a predetermined height position and the blade 6 can be disposed at the mounting position with a simple structure.

Here, as the stoppers 4, 4 ′, for example, the stopper 4 having a ring shape that can be inserted into the guide pin 2 as shown in FIG. 3B can be used. If such a stopper 4 is used, the fixture body 4 is fixed by press-contacting the guide pin 2 with a screw-like fixing pin 17 so that the jig body 1 is supported from below by the stopper 4. Can be fixed at a predetermined height position. The fixing pin 17 is not a screw-like one, and for example, a pin that presses the fixing pin 17 against the guide pin 2 with a spring may be used. Alternatively, it is also possible to use a hole provided on the guide pin 2 side so that the fixing pin 17 penetrates the hole of the guide pin 2.
Using such stoppers 4 and 4 ', the jig body 1 can be fixed by engaging with the guide pins 2 and 2'.

Alternatively, as shown in FIG. 1, the guides may be installed in such directions that the directions of the large holes of the guides 3 and 3 ′ are opposite to each other. In this case, after inserting the guide pins 2 and 2 ′ into the large holes of the guides 3 and 3 ′, the jig body 1 is rotated horizontally and moved to the guide pins 2 and 2 ′, for example, FIG. By engaging the stoppers 4, 4 'as shown in (B), the jig body 1 can be fixed at a predetermined height position.
Thus, if the guides 3 and 3 ′ are installed in such directions that the directions of the large holes of the guides 3 and 3 ′ are opposite to each other, the guide pins 2 and 2 ′ and the stoppers 4 and 4 ′ are connected to the guide 3 and It is possible to make it difficult for the jig body 1 to fall out of the 3 ′ large hole and fall.

Further, at this time, as the guide pins 2 and 2 ′, the guide pins 2 and 2 ′ are fitted with the stoppers 4 and 4 ′, and the guide pins 2 and 2 ′ having a plurality of grooves for changing the height position for fixing the jig body 1 are used. After fixing the jig body 1 at the position of any one of the grooves, the jig body 1 can be lifted and fixed so that the blade 6 is attached to the pulleys 7 and 7 '.
For example, before lifting the jig body 1 to the mounting position, the jig body 1 may be fixed by fitting the stoppers 4, 4 ′ into the groove 13 of the guide pin at the initial guide mounting position. it can. And the height position which fixes the said jig | tool main body 1 to the position of the groove | channel 12 of the guide pin of the said blade raising position can be changed, and the braid | blade 6 can be arrange | positioned in an attachment position.
Thus, before lifting the jig body 1, by fitting the stoppers 4, 4 ′ to the groove 13 of the guide pin at the initial guide attachment position and fixing the jig body 1, The distance for lifting the jig body 1 can be reduced so that the position of the blade 6 is a position to be attached to the pulleys 7 and 7 ′, and the position for fixing the jig body 1 can be easily positioned. Since the groove and the stoppers 4 and 4 'can be fitted one by one, the number of workers can be reduced. Thereby, the jig body 1 can be fixed and the blade 6 can be easily arranged at the attachment position.

  As described above, in the present invention, in attaching a blade to a band saw cutting apparatus, a blade attachment jig set is supported by at least two guide pins attached coaxially to the pulley shaft, and a plurality of side faces of the attached blade. A jig main body having two guides provided with holes for inserting the guide pins, and two stoppers engaged with the guide pins, and using the blade mounting jig set. The blade is placed on the jig main body, the side surface is supported by the support member, the guide pin is inserted into the guide hole of the jig main body, and the blade is attached to the pulley. The jig body is lifted, the stopper is engaged with the guide pin, the jig body is fixed at a predetermined height position, and the blade is fixed. Since attach Ri, it is possible to suppress the attachment position of the blade 6 is shifted, very large and without damaging even thinned blade can be easily attached.

EXAMPLES Hereinafter, although an Example demonstrates this invention further more concretely, this invention is not limited to this.
(Example)
A blade attachment jig set as shown in FIG. 1 was used to attach blade base metal thicknesses of 0.7 mm, 0.5 mm, and 0.3 mm to a band saw cutting apparatus. The pulley of the band saw cutting device used had a diameter of 700 mm.
As a result, all of the blades of all thicknesses could be easily attached to the band saw cutting apparatus by one operator without bending them.
By this, the blade attachment method using the blade attachment jig of the present invention can suppress the displacement of the attachment position of the blade, even with a very large and thin blade of 0.3 mm, It was confirmed that it could be easily installed without hurting. In addition, the blades having thicknesses of 0.7 mm and 0.5 mm can be attached in a very short time compared to the conventional case.

(Comparative example)
A blade base metal having a thickness of 0.7 mm, 0.5 mm, and 0.3 mm was manually attached to a band saw cutting apparatus by a conventional work. The pulley of the band saw cutting device used had a diameter of 700 mm. In addition, one worker with a 0.7 mm thick blade, two workers with a 0.5 mm thick blade, and three workers with a 0.3 mm thick blade. It was.
As a result, the blades having thicknesses of 0.7 mm and 0.5 mm could be mounted without bending, but the mounting took time and skill was required. When the blade having a thickness of 0.3 mm was attached to the blade and stretched between the pulleys, the blade base metal was bent. Therefore, it was necessary to replace the blade with a new blade and perform the blade attachment operation again.

  The present invention is not limited to the above embodiment. The above-described embodiment is an exemplification, and the present invention has any configuration that has substantially the same configuration as the technical idea described in the claims of the present invention and that exhibits the same effects. Are included in the technical scope.

It is the schematic which shows an example of the blade attachment jig set of this invention. It is the schematic which shows an example of the band saw cutting device which can attach a braid | blade using the braid | blade attachment jig set of this invention. It is the schematic which showed a mode that the braid | blade was moved and fixed to the position attached to a band saw cutting device using the braid | blade attachment jig set of this invention. (A) Schematic showing the state before and after lifting of the jig body. (B) An example of a stopper that can be used in the present invention (C) An example of a guide pin groove that can be used in the present invention. FIG. 3 is a schematic diagram illustrating an example of a slidable guide that can be used in the present invention. It is the schematic which shows an example of the hole of the guide which can be used by this invention. It is the schematic which shows an example of the conventional band saw cutting device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Blade attachment jig body, 2, 2 '... Guide pin, 3, 3' ... Guide,
4, 4 '... stop, 5 ... support member,
6 ... Blade, 7, 7 '... Pulley, 8, 8' ... Shaft,
9 ... Blade base metal, 10 ... Blade abrasive part,
11 ... Band saw cutting device, 12 ... Groove of guide pin at the blade extension position,
13 ... Guide pin groove at initial guide mounting position, 14 ... Elongated hole, 15 ... Bolt,
16, 16 '... guide hole, 17 ... fixing pin.

Claims (8)

  In order to attach the blade to a band saw having at least two pulleys rotating around an axis and a blade stretched between the pulleys, the pulley being movable in a direction to expand and contract the distance between the shafts The blade mounting jig set includes at least two guide pins that are mounted coaxially with the pulley shaft, and a plurality of support members that support side surfaces of the blade to be mounted, and a hole for inserting the guide pin is provided. A jig main body having two guides and two stoppers engaged with the guide pins, the blade is placed on the jig main body and the side surface is supported by the support member, Insert the guide pin into the guide hole, lift the jig body so that the blade is attached to the pulley, and Blade attachment auxiliary member set, characterized in that the is to fix the jig body engaged with the guide pin at a predetermined height position.   2. The blade attachment according to claim 1, wherein at least one of the two guides is slidable with respect to the jig main body by following an expansion / contraction movement of an inter-axis distance of the pulley. Jig set.   The shape of the guide hole of the jig main body is a shape in which a hole larger than the maximum outer diameter of the guide pin and the stopper and a hole smaller than the maximum outer diameter of the guide pin and the stopper are provided in a row. The blade mounting jig set according to claim 1 or 2, characterized in that   4. The guide pin according to claim 1, wherein the guide pin has a plurality of grooves that can be fitted to the stopper and change a height position for fixing the jig main body. 5. The blade mounting jig set according to item 1.   At least two pulleys that rotate around an axis and a blade that is stretched between the pulleys, and the pulley is movable in a direction that expands and contracts the distance between the shafts. The blade is attached to the pulley by reducing the distance between them, and the blade is attached by extending the distance between the shafts of the pulley, and at least two of them are attached coaxially with the shaft of the pulley. A jig body having a guide pin, a plurality of support members for supporting side surfaces of the blade to be attached, and having two guides provided with holes for inserting the guide pins, and two stoppers engaged with the guide pins The blade is mounted on the jig body and the side surface is supported by the support member, and the jig book The guide pin is inserted into the guide hole, the jig body is lifted so that the blade is attached to the pulley, and the stopper is engaged with the guide pin to fix the jig body to a predetermined position. A blade attachment method, wherein the blade is attached while being fixed at a height position.   The blade mounting method according to claim 5, wherein at least one of the two guides is slid with respect to the jig body following the expansion and contraction movement of the pulley between the axes.   The shape of the guide hole of the jig body is a shape in which a hole larger than the maximum outer diameter of the guide pin and the stopper and a hole smaller than the maximum outer diameter of the guide pin and the stopper are connected, and the guide pin Is inserted into a hole larger than the maximum outer diameter of the guide pin and stopper of the guide, and then the jig body is horizontally moved to the hole side smaller than the maximum outer diameter, and the stopper is engaged with the guide pin. The blade mounting method according to claim 5 or 6, wherein the blades are combined. As the guide pin, a pin having a plurality of grooves for fitting with the stopper and making it possible to change the height position for fixing the jig main body is used, and the jig main body is set to any one of the grooves. The blade according to any one of claims 5 to 7, wherein after fixing at the position, the jig body is lifted and fixed so that the blade is attached to the pulley. How to install.

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