JPWO2020039940A1 - Glass plate manufacturing method and tools for grindstone equipment - Google Patents

Abstract

Regarding the method for manufacturing a glass plate including the step of removing the grindstone flange 3 and the grindstone 6 from the spindle 2, the removal steps include a fixing release step of releasing the fixing between the spindle 2 and the grindstone flange 3 and both 2 after the fixing release. The fitting release step of releasing the fitting of the grindstone device 3 by the tool 7 for the grindstone device was included, so that the tool 7 could be fixed to the hollow portion 3d of the grindstone flange 3.

Description

The present invention is a method for manufacturing a glass plate including a step of removing a grindstone holder (for example, a grindstone flange) and a grindstone from a spindle provided in a rotary grindstone device, and disengages the spindle and the grindstone holder at the time of removal. Regarding tools for grindstone equipment.

As is well known, the manufacturing process of a glass plate often includes an end face processing step of grinding or polishing the end face of the glass plate with a grindstone. It is customary to use a rotary grindstone device equipped with a grindstone to execute the end face processing step. Here, the end face of the wafer is processed instead of the end face of the glass plate, and an example of the rotary grindstone device is disclosed in Patent Document 1.

The device disclosed in the same document includes a spindle (motor rotating shaft 40) having a tapered tip and a grindstone flange (flange body) having a tapered hole (hole 18) that fits with the spindle. 12), a fixture (hexagonal cap bolt 34) that fixes the spindle and the grindstone flange in a fitted state, and a state around the spindle that is mounted on the outer peripheral surface of the shaft portion (shaft portion 17) of the grindstone flange. It is provided with a rotating annular grindstone (grind 50).

By the way, it is necessary to use the grindstone properly according to the type (dimension, material, chamfer shape, required quality) of the glass plate to be processed, and for that purpose, the grindstone flange and the grindstone may be replaced. In Patent Document 1, when replacing the grindstone flange and the grindstone, first, the grindstone is removed from the shaft portion of the grindstone flange, and in that state, the fixing of the spindle and the grindstone flange by the fixture is released. Next, the spindle and the grindstone flange in the released state are released from the fitting. Here, since the spindle and the grindstone flange are firmly fitted and in close contact with each other, a tool for a grindstone device is used to release the fitting. An example of this tool for a grindstone device is disclosed in Patent Document 1.

In the tool disclosed in the same document, a female screw that meshes with a male screw formed on the outer peripheral surface of the shaft portion of the grindstone flange is formed, and the tool is fixed to the outer peripheral surface of the shaft portion by utilizing the engagement of both screws. A possible first member (disk 44) and a male screw that meshes with a female screw formed on the inner peripheral surface of the through hole of the first member are formed, and the meshing of both screws is used to form a spindle axial direction. It is provided with a second member (pull-out bolt 46) that can be fed and moved to.

When releasing the fitting between the spindle and the grindstone flange using the above tool, the first member is fixed to the outer peripheral surface of the shaft portion of the grindstone flange, and the second member is inserted into the through hole of the first member. Is inserted while rotating to bring the tip of the spindle into contact with the second member. In this state, by further rotating the second member, the second member is fed and moved toward the spindle with respect to the first member. Along with this, the grindstone flange moves away from the spindle together with the first member, so that the tip of the spindle is pushed out from the hole of the grindstone flange, and the fitting between the spindle and the grindstone flange is released.

Japanese Unexamined Patent Publication No. 2005-221066

However, when the spindle and the grindstone flange (grindstone holder) are disengaged by using the above tool, there are the following problems to be solved.

That is, when releasing the fitting using the above tool, from the viewpoint of preventing interference between the first member and the grindstone, before fixing the first member to the outer peripheral surface of the shaft portion of the grindstone flange. , It is necessary to remove the grindstone from the outer peripheral surface of the shaft portion. Therefore, every time the grindstone flange and the grindstone are removed from the spindle, it is required to remove the grindstone from the grindstone flange one by one. Here, since the grindstone needs to be mounted on the grindstone flange in a centered state, in order to use this grindstone again, there is a problem that the grindstone flange must be mounted on the grindstone and centering work is required. there were.

Under such circumstances, it has been expected to establish a technique capable of efficiently performing the work when removing both the grindstone flange and the grindstone from the spindle. In view of the above circumstances, the present invention has a technical problem of improving the efficiency of the work when removing the grindstone holder and the grindstone from the spindle provided in the rotary grindstone device.

The present invention, which was devised to solve the above problems, is in a state where the spindle, the grindstone holder having a hollow portion in addition to the hole portion to be fitted with the spindle, and the spindle and the grindstone holder are fitted. A method for manufacturing a glass plate including a step of removing the grindstone holder and the grindstone from the spindle for a rotary grindstone device including a fixture for fixing and an annular grindstone that rotates around the spindle while being attached to the grindstone holder. The removal step is a fixing release step of releasing the fixing of the spindle and the grindstone holder by the fixture, and a fitting of the spindle and the grindstone holder in the released state by the tool for the grindstone device. It is characterized in that the tool for the grindstone device can be fixed to the hollow portion, including the fitting release step of releasing the fitting.

In this method, since the tool for the grindstone device can be fixed to the hollow portion of the grindstone holder, it is possible to reliably eliminate the possibility that the tool for the grindstone device interferes with the grindstone when executing the fitting release step. Therefore, it is possible to naturally eliminate the need to remove the grindstone from the grindstone holder when executing the fitting release step. As a result, it is possible to improve the efficiency of the work (removal process) for removing the grindstone holder and the grindstone from the spindle.

In the above method, the hollow portion is formed so as to be connected to the hole portion and along the hole axial direction of the hole portion, and the tool for the grindstone device can be fixed to the hollow portion with the first member and the spindle with respect to the first member. It has a second member that can move relative to the axial direction of the wheel, and the relative movement of the second member with respect to the first member is performed by feed movement, and in the fitting release step, the grindstone holder and the first member are moved. With the tip of the spindle in contact with the second member in a fixed state and the first member and the second member are relatively moved, the fitting between the spindle and the grindstone holder is released. You may.

Here, if an impact is applied to the grindstone holder or the grindstone in the fitting release step, a misalignment occurs between the grindstone holder and the grindstone. When the grindstone holder and the grindstone in this state are reattached to the spindle and the end face machining step is executed, the machined end face may be wavy and the properties of the end face may be deteriorated. In the above configuration, the spindle and the grindstone holder are released from the fitting by moving the first member and the second member relative to each other in a state where the tip of the spindle and the second member are in contact with each other. The relative movement of the second member with respect to the first member is performed by the feed movement. That is, under the state where the tip of the spindle and the second member are in contact with each other, the tip of the spindle is separated from the hole of the grindstone holder as the feed moves. Therefore, in executing the fitting release step, it is possible to eliminate the need to apply an impact to any of the grindstone device tools (first member and second member), the grindstone holder, and the grindstone. As a result, it is possible to prevent the occurrence of deviation between the grindstone holder and the grindstone when the fitting release step is executed. Therefore, even when these grindstone holders and grindstones are reattached to the spindle and the end face of the glass plate is machined, it is possible to prevent the machined end face from waviness and prevent deterioration of the properties of the end face. ..

In the above method, in the mating release step, the grindstone holder and the first screw are used by utilizing the engagement between the female screw formed on the inner peripheral surface of the hollow portion and the male screw formed on the outer peripheral surface of the first member. It is preferable to fix one member.

In this way, it is possible to fix and release the grindstone holder and the first member simply by using a screw mechanism which is a simple mechanism. Further, by adopting a simple mechanism, it is possible to reduce the cost required for manufacturing the tool for the grindstone device.

In the above method, a hole is formed in the first member, and the second member has a round bar-shaped rod-shaped portion extending in the axial direction of the spindle. It is preferable to feed and move the second member to the first member by utilizing the engagement between the female screw formed on the surface and the male screw formed on the outer peripheral surface of the rod-shaped portion of the second member.

In this way, it is possible to move the first member and the second member relative to each other simply by using a screw mechanism which is a simple mechanism. Further, it is further advantageous in reducing the cost required for manufacturing the tool for the grindstone device. In addition, since the torque applied to the tool can be converted into a force acting in the axial direction of the spindle, the spindle and the grindstone holder can be disengaged by applying the smallest possible force to the tool. be able to.

In the above method, it is preferable that the second member has a handle portion that is connected to the rod-shaped portion and extends in the radial direction of the rod-shaped portion.

In this way, the presence of the handle portion makes it easier to apply torque for rotation to the rod-shaped portion of the second member. Therefore, the rod-shaped portion can be easily rotated to feed the second member in the axial direction of the spindle.

In the above method, the tool for the grindstone device includes a first rod member that can be fixed in the hollow portion, a weight that can slide along the longitudinal direction of the first rod member, and a regulating member that regulates the sliding range of the weight. In the fitting release step, the spindle and the grindstone holder may be released from the fitting as the weight collides with the regulating member.

In this way, it is possible to release the fitting between the spindle and the grindstone holder by simply colliding the weight with the regulating member and utilizing the impact generated at that time. Therefore, the work for removing the grindstone holder and the grindstone from the spindle can be easily performed.

In the above method, it is preferable that the regulating member is a second rod member that is connected to the first rod member and extends in the radial direction of the first rod member.

By doing so, the structure of the tool for the grindstone device can be simplified, so that the cost required for manufacturing the tool for the grindstone device can be reduced.

In the above method, it is preferable that the second rod member is connected to the end portion of the first rod member and the first rod member and the second rod member form a T shape.

In this way, it is possible to easily and surely regulate the range of the slide of the weight that slides along the longitudinal direction of the first member.

In the above method, it is preferable that the tool for the grindstone device is made of stainless steel.

In this way, it is possible to preferably prevent the tool for the grindstone device from being rusted due to the grinding liquid, the polishing liquid, or the like used when processing the end face of the glass plate by the rotary grindstone device.

Further, in the present invention, which was devised to solve the above problems, the spindle, the grindstone holder having a hollow portion in addition to the hole portion to be fitted with the spindle, and the spindle and the grindstone holder are fitted. For a rotary grindstone device equipped with a fixture for fixing in a state and an annular grindstone that rotates around the spindle while attached to the grindstone holder, when removing the grindstone holder and grindstone from the spindle, the fixture is fixed. It is a tool for a grindstone device for releasing the fitting between the spindle and the grindstone holder in the released state, and is characterized in that it can be fixed to the hollow portion.

According to this tool, it is possible to obtain the same action / effect as the above-mentioned action / effect in the above description of the method for manufacturing a glass plate.

In the above configuration, the hollow portion is connected to the hole portion and is formed along the hole axial direction of the hole portion, and can be fixed to the hollow portion. It may have a second member that can be fed and moved to and can be brought into contact with the tip of the spindle.

In this way, it is possible to obtain the same action / effect as the above-mentioned action / effect in the above description of the glass plate manufacturing method.

In the above configuration, even if the first rod member that can be fixed to the hollow portion, the weight that can slide along the longitudinal direction of the first rod member, and the regulation member that regulates the sliding range of the weight are provided. good.

In this way, it is possible to obtain the same action / effect as the above-mentioned action / effect in the above description of the glass plate manufacturing method.

According to the present invention, when the grindstone holder and the grindstone are removed from the spindle provided in the rotary grindstone device, the efficiency of the work can be improved.

It is a vertical sectional front view which shows the rotary grindstone device. It is a vertical sectional front view which shows the fixing release process in the manufacturing method of the glass plate which concerns on 1st Embodiment of this invention. It is a vertical sectional front view which shows the tool for the grindstone device which concerns on 1st Embodiment of this invention. It is a vertical sectional front view which shows the fitting release process in the manufacturing method of the glass plate which concerns on 1st Embodiment of this invention. It is a vertical sectional front view which shows the fitting release process in the manufacturing method of the glass plate which concerns on 1st Embodiment of this invention. It is a vertical sectional front view which shows the fitting release process in the manufacturing method of the glass plate which concerns on 1st Embodiment of this invention. It is a vertical sectional front view which shows the fitting release process in the manufacturing method of the glass plate which concerns on 1st Embodiment of this invention. It is a front view which shows the tool for the grindstone device which concerns on 2nd Embodiment of this invention. It is a front view which shows the mating release process in the manufacturing method of the glass plate which concerns on 2nd Embodiment of this invention.

Hereinafter, a method for manufacturing a glass plate and a tool for a grindstone device according to an embodiment of the present invention will be described with reference to the accompanying drawings. In the attached drawing, the portion indicated by the extra-thick line indicates that the screw is formed.

<First Embodiment>
The method for manufacturing a glass plate according to the present embodiment includes a step of removing the grindstone holder and the grindstone from the spindle provided in the rotary grindstone device, as will be described later. First, the configuration of the rotary grindstone device will be described.

As shown in FIG. 1, the rotary grindstone device 1 fits the spindle 2, the grindstone flange 3 (grindstone holder) in which the hole 3a to be fitted with the spindle 2 is formed, and the spindle 2 and the grindstone flange 3. It is provided with a bolt 4 and a holding plate 5 as fixtures for fixing in a fixed state, and an annular grindstone 6 that rotates around a spindle 2 while being mounted on a grindstone flange 3.

The spindle 2 has a tip portion 2a formed in a tapered shape. The tip portion 2a is formed so that the outer diameter decreases as it moves from the lower side to the upper side (from the base end side to the tip end side). Inside the tip portion 2a, a female screw (not shown) that meshes with a male screw (not shown) formed on the bolt 4 is formed. The spindle 2 rotates together with the grindstone flange 3 and the grindstone 6 as power is transmitted from a drive device (not shown) such as a motor.

The grindstone flange 3 has a flange portion 3b that supports the grindstone 6 from below, and a shaft portion 3c that is connected above the flange portion 3b.

The hole portion 3a formed in the flange portion 3b is formed in a tapered shape that fits with the tip portion 2a of the spindle 2, and is formed so that the inner diameter is reduced as it moves from the lower side to the upper side. In the present embodiment, the upper end of the hole 3a and the tip of the spindle 2 are flush with each other, but the upper end position of the hole 3a (the bottom position of the hollow portion 3d described later) is from the tip position of the spindle 2. May be high. The hole axis of the hole portion 3a coincides with the axis of the spindle 2.

A hollow portion 3d connected to the hole portion 3a is formed in the shaft portion 3c. As a result, the shaft portion 3c is formed in a tubular shape. The hollow portion 3d is formed along the hole axis direction of the hole portion 3a, and is formed so that the opening shape is circular. The inner diameter of the circle formed by this opening is larger than the inner diameter at the upper end (upper end of the taper) of the hole 3a. Further, the hole shaft of the hollow portion 3d coincides with the axis of the spindle 2 in the same manner as the hole shaft of the hole portion 3a. Further, a female screw 3e is formed on the inner peripheral surface of the hollow portion 3d.

The bolt 4 penetrates a hole (not shown) formed in the holding plate 5, and is fastened to the tip portion 2a of the spindle 2 with its head pressing the holding plate 5 toward the spindle 2. .. By tightening the bolt 4, the spindle 2 and the grindstone flange 3 are fixed.

The grindstone 6 is mounted on the grindstone flange 3 so that the center of the ring (annulus) formed by the grindstone 6 coincides with the axial center of the spindle 2. The grindstone 6 is attached to the grindstone flange 3 with bolts (not shown). Grooves (not shown) for processing the end face of the glass plate are formed on the outer peripheral surface of the grindstone 6 over a plurality of upper and lower stages.

Next, the above-mentioned removing step will be described.

The removal process includes a fixing release step (FIG. 2) for releasing the fixing between the spindle 2 and the grindstone flange 3 by the bolt 4 and the holding plate 5, and fitting of the spindle 2 and the grindstone flange 3 in the released state. This includes a fitting release step (FIGS. 4 to 7) for releasing the tool 7 (FIG. 3) for the grindstone device.

In the fixing release step, as shown in FIG. 2, the bolt 4 tightened to the tip portion 2a of the spindle 2 is loosened and removed, and the holding plate 5 is removed. As a result, the fixing release step is completed. After the fixing release step is completed, the spindle 2 and the grindstone flange 3 are still firmly fitted and in close contact with each other.

When the fixing release step is completed, the fitting release step is then executed. Here, the configuration of the grindstone device tool 7 used in the fitting release step will be described.

As shown in FIG. 3, the tool 7 for a grindstone device has a first member 8 formed in a bolt shape and a second member 9 formed in a T shape. The material of the tool 7 for the grindstone device is not particularly limited, but in the present embodiment, stainless steel is used as the material.

The first member 8 has a main body portion 8a and a head portion 8b connected to one end of the main body portion 8a. Further, the first member 8 is formed with a hole 8c penetrating itself, and a female screw 8d is formed on the inner peripheral surface of the hole 8c. On the other hand, a male screw 8e is formed on the outer peripheral surface of the main body 8a, and the male screw 8e meshes with the female screw 3e formed on the inner peripheral surface of the hollow portion 3d of the grindstone flange 3. The outer diameter of the head portion 8b is formed to be one size larger than that of the main body portion 8a, and the outer diameter of the head portion 8b is larger than the inner diameter of the circle formed by the opening of the hollow portion 3d of the grindstone flange 3. Further, the outer diameter of the head portion 8b is smaller than the inner diameter of the ring (annulus) formed by the grindstone 6.

The second member 9 has a round bar-shaped rod-shaped portion 9a and a handle portion 9b connected to the rod-shaped portion 9a and extending in the radial direction of the rod-shaped portion 9a. The outer diameter of the rod-shaped portion 9a is smaller than the inner diameter at the upper end of the hole portion 3a of the grindstone flange 3. A male screw 9c is formed on the outer peripheral surface of the rod-shaped portion 9a, and the male screw 9c meshes with the female screw 8d formed on the inner peripheral surface of the hole 8c of the first member 8. As a result, the handle is in a state where the female screw 8d formed on the inner peripheral surface of the hole 8c of the first member 8 and the male screw 9c formed on the outer peripheral surface of the rod-shaped portion 9a of the second member 9 are meshed with each other. When the rod-shaped portion 9a is rotated by operating the portion 9b, the second member 9 is fed and moved along the longitudinal direction of the rod-shaped portion 9a with respect to the first member 8.

In the mating release step using the grindstone device tool 7, first, as shown in FIG. 4, the first member 8 is placed in the hollow portion 3d of the grindstone flange 3 while the grindstone 6 is still attached to the grindstone flange 3. Fix it. Specifically, the female screw 3e formed on the inner peripheral surface of the hollow portion 3d of the grindstone flange 3 and the male screw 8e formed on the outer peripheral surface of the main body portion 8a of the first member 8 are engaged with each other for relative rotation. By doing so, the first member 8 is attached to the grindstone flange 3, and the head portion 8b of the first member 8 is in contact with the shaft portion 3c of the grindstone flange 3.

Next, as shown in FIG. 5, a female screw 8d formed on the inner peripheral surface of the hole 8c of the first member 8 and a male screw 9c formed on the outer peripheral surface of the rod-shaped portion 9a of the second member 9 are formed. Engage. At this time, the rod-shaped portion 9a of the second member 9 is in a state of extending in the axial direction of the spindle 2. Then, while engaging the screws 8d and 9c, the handle portion 9b of the second member 9 is operated to rotate the rod-shaped portion 9a. Along with this, the rod-shaped portion 9a is sent toward the spindle 2 (lower side) and moves with respect to the first member 8.

When the rod-shaped portion 9a is fed toward the spindle 2 as described above, as shown in FIG. 6, the rod-shaped portion 9a comes into contact with the tip of the spindle 2, and the rod-shaped portion 9a cannot move further downward. Become. From this state, the handle portion 9b of the second member 9 is further operated to rotate the rod-shaped portion 9a, whereby the rod-shaped portion 9a is fed and moved toward the spindle 2 with respect to the first member 8. In this case, since the rod-shaped portion 9a cannot move downward, the first member 8 moves away from the spindle 2 (upper side) as shown in FIG. 7. At this time, the grindstone flange 3 fixed to the first member 8 also moves upward. Along with this, the hole 3a of the grindstone flange 3 rises from the tip end 2a of the spindle 2, and the fitting between the spindle 2 and the grindstone flange 3 is released.

As a result, the mating release step is completed, and all the steps included in the removing step are completed. As a result, the grindstone flange 3 and the grindstone 6 are removed from the spindle 2 provided in the rotary grindstone device 1.

Hereinafter, the main actions and effects of the above glass plate manufacturing method will be described.

In the above method, since the first member 8 (tool for the grindstone device 7) is fixed to the hollow portion 3d of the grindstone flange 3 in executing the fitting release step, the possibility of interference with the grindstone 6 can be surely eliminated. Therefore, it is possible to naturally eliminate the need to remove the grindstone 6 from the grindstone flange 3 when executing the fitting release step. As a result, it is possible to improve the efficiency of the work for removing the grindstone flange 3 and the grindstone 6 from the spindle 2.

Hereinafter, the second embodiment will be described. In the description of the second embodiment, the elements substantially the same as the elements described in the first embodiment described above are duplicated by adding the same reference numerals to the drawings referred to in the description of the second embodiment. The description will be omitted, and only the differences from the first embodiment will be described.

<Second embodiment>
As shown in FIGS. 8 and 9, the second embodiment differs from the first embodiment in the configuration of the grindstone device tool 7 used in the fitting release step and the fitting release step. Is the mode of execution of.

The tool 7 for the grindstone device includes a vertical rod 10 as a first rod member that can be fixed to a hollow portion 3d (not shown) of the grindstone flange 3, and a weight that can slide up and down along the longitudinal direction of the vertical rod 10. 11 and a horizontal bar 12 as a regulating member (second bar member) that regulates the slide range of the weight 11.

The upper end of the vertical bar 10 is connected to the central portion of the horizontal bar 12, and both 10 and 12 form a T-shape. The horizontal bar 12 extends in the radial direction of the vertical bar 10. Here, as a modification of the present embodiment, the vertical rod 10 and the horizontal rod 12 may be crossed to form a cross shape by both 10 and 12. In the present embodiment, a male screw 10b is formed on the outer peripheral surface of the lower end portion 10a of the vertical rod 10, and the hollow portion 3d of the grindstone flange 3 is formed by operating the horizontal rod 12 to rotate the vertical rod 10. It is possible to engage with a female screw 3e (not shown) formed on the inner peripheral surface of the above. As a result, the hollow portion 3d of the grindstone flange 3 and the vertical rod 10 are fixed. Further, the weight 11 is formed with a through hole (not shown), and an intermediate portion between the lower end portion 10a and the upper end portion of the vertical rod 10 is inserted through the through hole. Therefore, the weight 11 can slide up and down along the longitudinal direction of the vertical rod 10. The inner diameter of the through hole of the weight 11 is larger than the outer diameter of the middle portion of the vertical rod 10 and smaller than the outer diameter of the lower end portion 10a of the vertical rod 10. Therefore, the range in which the weight 11 can slide is restricted between the lower end portion 10a of the vertical rod 10 and the upper end portion (horizontal rod 12).

In the fitting release step using the grindstone device tool 7, the weight 11 slid along the vertical bar 10 collides with the horizontal bar 12 as shown by the arrow A in FIG. This collision may be one-time or multiple. The impact at this time is used to release the fitting. Also by this second embodiment, it is possible to obtain the same main actions and effects as those of the first embodiment described above.

Here, the method for manufacturing a glass plate and the tool for a grindstone device according to the present invention are not limited to the modes and configurations described in the above embodiments. For example, in the above embodiment, the screw mechanism is used to fix the first member or the vertical rod to the grindstone flange, but the present invention is not limited to this. By using a chuck mechanism having a claw or the like instead of the screw mechanism, the first member or the vertical rod may be fixed to the grindstone flange.

Further, in the first embodiment described above, a screw mechanism is used to feed and move the second member with respect to the first member, but the present invention is not limited to this. By using a rack and pinion mechanism instead of the screw mechanism, the first member and the second member may be fed and moved. In this case, a pinion may be provided on the first member and a rack may be provided on the second member, and the second member may be fed and moved with respect to the first member as the pinion rotates.

Further, in the above embodiment, the grindstone flange is used as the grindstone holder on which the grindstone is mounted, but the present invention is not limited to this. If a hollow portion is provided in addition to the hole portion to be fitted with the spindle, a grindstone holder having another shape may be used instead of the grindstone flange. Further, in the second embodiment described above, the hollow portion may not be connected to the hole portion as long as the first rod member (vertical rod 10) can be fixed.

1 Rotary grindstone device 2 Spindle 2a Tip 3 Grindstone flange (grindstone holder)
3a Hole 3d Hollow part 3e Female screw 4 Bolt 5 Holding plate 6 Grindstone 7 Grindstone device tool 8 First member 8c Hole 8d Female screw 8e Male screw 9 Second member 9a Rod-shaped part 9b Handle part 9c Male screw 10 Vertical rod 11 Weight 12 horizontal bar

Claims (12)

Attached to the spindle, a grindstone holder having a hollow portion in addition to a hole for fitting the spindle, a fixture for fixing the spindle and the grindstone holder in a fitted state, and the grindstone holder. A method for manufacturing a glass plate, which comprises a step of removing the grindstone holder and the grindstone from the spindle for a rotary grindstone device including an annular grindstone that rotates around the spindle in the state of being.
The removal step is a fixing release step of releasing the fixation of the spindle and the grindstone holder by the fixture, and fitting of the spindle and the grindstone holder in the released state for the grindstone device. Including the mating release step of releasing with a tool
A method for manufacturing a glass plate, wherein the tool for a grindstone device can be fixed to the hollow portion. The hollow portion is formed so as to be continuous with the hole portion and along the hole axial direction of the hole portion.
The grindstone device tool has a first member that can be fixed to the hollow portion and a second member that can move relative to the first member in the axial direction of the spindle.
The relative movement of the second member with respect to the first member is performed by feed movement.
In the fitting release step, the first member and the second member are in a state where the grindstone holder and the first member are fixed and the tip of the spindle and the second member are in contact with each other. The method for manufacturing a glass plate according to claim 1, wherein the spindle and the grindstone holder are released from the mating with the relative movement of the spindle and the grindstone holder. In the fitting release step, the grindstone holder and the first The method for manufacturing a glass plate according to claim 2, wherein the member is fixed to the member. A hole is formed in the first member, and the second member has a round bar-shaped rod-shaped portion extending in the axial direction of the spindle.
In the fitting release step, the engagement between the female screw formed on the inner peripheral surface of the hole of the first member and the male screw formed on the outer peripheral surface of the rod-shaped portion of the second member is utilized. The method for manufacturing a glass plate according to claim 2 or 3, wherein the second member is fed and moved with respect to the first member. The method for manufacturing a glass plate according to claim 4, wherein the second member has a handle portion that is connected to the rod-shaped portion and extends in the radial direction of the rod-shaped portion. The tool for the grindstone device includes a first rod member that can be fixed to the hollow portion, a weight that can slide along the longitudinal direction of the first rod member, and a regulating member that regulates the sliding range of the weight. Have and
The glass plate according to claim 1, wherein in the fitting release step, the fitting of the spindle and the grindstone holder is released by colliding the weight with the regulating member. Production method. The method for manufacturing a glass plate according to claim 6, wherein the regulating member is a second rod member that is connected to the first rod member and extends in the radial direction of the first rod member. The glass according to claim 7, wherein the second rod member is connected to an end portion of the first rod member, and the first rod member and the second rod member form a T shape. How to make a board. The method for manufacturing a glass plate according to any one of claims 1 to 8, wherein the tool for the grindstone device is made of stainless steel. The spindle, a grindstone holder having a hollow portion in addition to a hole for fitting the spindle, a fixture for fixing the spindle and the grindstone holder in a fitted state, and a grindstone holder attached to the grindstone holder. With respect to a rotary grindstone device including an annular grindstone that rotates around the spindle in a state of being A tool for a grindstone device for releasing the fitting between the grindstone holder and the grindstone holder.
A tool for a grindstone device that can be fixed to the hollow portion. The hollow portion is formed so as to be continuous with the hole portion and along the hole axial direction of the hole portion.
It is characterized by having a first member that can be fixed to the hollow portion and a second member that can be fed and moved in the axial direction of the spindle with respect to the first member and can be brought into contact with the tip of the spindle. The tool for a grindstone device according to claim 10. A claim characterized by having a first rod member that can be fixed to the hollow portion, a weight that can slide along the longitudinal direction of the first rod member, and a regulating member that regulates the sliding range of the weight. Item 10. The tool for a grindstone device according to Item 10.

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