JPH0890426A - Polishing device - Google Patents

Abstract

PURPOSE: To firmly stick a grinding wheel tip on a polishing device and facilitate replacement of the stuck grinding wheel tip on the polishing device fitted freely detachable on a rotary base mounted integrally or separately on the bottom end of a rotary upper shaft of a polish processing machine. CONSTITUTION: A polishing device 5, which is fitted freely detachable on a rotary base 1 integrally or separately mounted on the bottom end of a rotary upper shaft of a polish processing machine, is composed of a grinding wheel sticking plate 3 on which a plurality of grinding wheel tips 2 can be stuck, a counter sunk portion 8 on which grinding wheel tips 2 formed on the grinding wheel fitting surface of the grinding wheel sticking plate 3 are stuck by a bonding agent 10, a hole 9 running through the center part of the counter sunk portion 8, and a reference plate 4 which is fitted to the opposite surface of the grinding wheel mounting surface of the grinding wheel sticking plate 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing apparatus which is detachably assembled to a rotary base of a polishing machine and is used.
More specifically, the present invention relates to a polishing device in which a large number of grindstone chips are attached so as to be freely attached and detached.

[0002]

2. Description of the Related Art Generally, when polishing the surface of a workpiece, a polishing machine as shown in FIG. 4 is used. The outline of this polishing machine will be described. The polishing machine 51 is provided with a table 52 for fixing and polishing the workpiece 50.
A rotating base 54 mounted on the rotating upper shaft 53 of the polishing machine 51 via a chuck mechanism 57 is provided above the unit 2. A polishing device 55, to which a large number of grinding stone chips 56 are directly attached, is removably mounted on the rotary base 54 by a fixing means such as bolts.

Further, as shown in FIGS. 7 (a) and 7 (b), the grindstone chips 56 of the polishing device 55 have a large number of grindstone chips 56 on the friction surface of the polishing device 55 via an adhesive 58 or an adhesive tape 59. Is attached. When the grindstone tip 56 is worn, the polishing device 55 is removed from the rotary base 54, and the worn grindstone tip 56 of the polishing device 55 is removed.
After being peeled off, it can be replaced with a new grindstone tip 56 and used again. Further, the rotating upper shaft 53 is rotatably attached to an arm portion 59, and the arm portion 59 is configured to be vertically movable around a fulcrum 58 by a driving force of a cylinder piston 60.

In order to polish the workpiece 50 using the polishing machine 51 thus constructed, the workpiece 50 is fixed on the table 52, and the rotary upper shaft 53 is rotated while supporting it. The arm 59 is moved downward by the driving force of the cylinder piston 60 around the center 58, and the grindstone tip 56 of the polishing device 55 mounted on the rotary base 54 is pressed against the surface of the workpiece 50. Be seen. When the grindstone tip 56 attached to the polishing device 55 is worn by the polishing process, the polishing device 55 is removed from the rotary base 54,
After the worn grindstone tip 56 of the polishing device 55 is peeled off, the grindstone tip 56 is replaced with a new grindstone tip 56, and the polishing device 55 is used again for polishing.

[0005]

However, it is difficult to evenly attach the grindstone chips to the polishing device in the case where the grindstone chips are attached to the friction surface of the polishing device with an adhesive as in the conventional polishing device. However, there is a technical problem that when the amount of the adhesive is large, it sticks out around the grindstone tip and deteriorates the polishing function.

When the worn grindstone tip is peeled from the polishing device, the adhesive is melted with an organic solvent such as trichlene to peel off the grindstone tip, or the grindstone tip is knocked off with a hammer or the like. The worn-off whetstone tip 56 was removed. Therefore, the work for replacing the grindstone chips is troublesome, and there is a problem that the number of work steps increases.

Further, in the case where the grindstone tip is attached to the polishing device by using an adhesive tape or the like, the holding force of the grindstone tip is weak and it cannot be used for the polishing process which requires a large pressing force. was there.

The present invention has been made in order to solve the above-mentioned technical problems of the conventional structure, and is detachably attached to a rotary base integrally or separately attached to the lower end of the rotating upper shaft of the polishing machine. It is an object of the present invention to provide a polishing device in which a grindstone tip is firmly attached to the polishing device, and the attached grindstone tip is easily replaced.

[0009]

In order to achieve the above object, a polishing apparatus according to the present invention is a polishing apparatus that is detachably mounted on a rotary base integrally or separately attached to a lower end of a rotating upper shaft of a polishing machine. In the device, a whetstone sticking plate to which a plurality of whetstone chips are stuck, a spot facing part for sticking the whetstone chips formed on the grindstone mounting surface of the grindstone pasting plate with an adhesive, and a central part of the spot facing part And a reference plate assembled on the surface opposite to the grindstone mounting surface of the grindstone pasting plate. Further, it has a configuration in which a taper-shaped chamfered portion is formed in the spot facing portion, and corresponds to a taper-shaped chamfered portion of the spot facing portion on the side surface opposite to the polishing surface of the grindstone tip. It has a configuration in which a taper-shaped chamfer is formed. Further, the grinding stone tip is bonded to a jig having a tapered chamfer corresponding to the tapered chamfer of the spot facing.

[0010]

In the polishing apparatus according to the present invention, a large number of grindstone chips are attached to each countersunk portion of the grindstone-attaching plate via an adhesive, so that the grindstone chips are evenly distributed on the polishing surface of the polishing apparatus. In addition to being able to be attached, the holding force of the grindstone tip, that is, the grindstone tip can be firmly attached. A taper-like chamfered portion of the spot facing portion is provided on a side surface of the grindstone tip opposite to the polishing surface.
A configuration in which a par-shaped chamfer is formed, and the grindstone tip is bonded to a jig having a tapered chamfer corresponding to the tapered chamfer of the counterbore. Since it has, it becomes possible to firmly and more stably attach to each spot facing portion of the grindstone attaching plate. Further, the polishing surface of the grindstone tip can be easily attached to the lower surface of the grindstone attachment plate on a flat surface. In addition, since the excess adhesive accumulates in the spot facing portion and the hole and does not overflow around the grindstone tip, it can be extruded around the grindstone tip to prevent deterioration of the polishing function.

Further, when the grindstone tip attached to the grinder is worn, the grinder is removed from the rotary base, and the reference plate is removed from the upper surface of the grindstone sticking plate.
Insert a jig such as a grindstone removal pin from the hole on the grindstone sticking plate, and hit it with a hammer to remove the grindstone tip from the grindstone sticking plate.Use an organic solvent to remove the worn grindstone tip. Instead, it can be peeled off with a small amount of force.

[0012]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a partially cutaway front view showing a polishing apparatus according to a first embodiment of the present invention, and FIG. 2 is a bottom view of FIG. Since the polishing machine used in the present invention has the same structure as the conventional one, its explanation is omitted.

In the figure, reference numeral 1a is a shaft provided on the rotary base 1, which is mounted on a rotary upper shaft of a polishing machine (not shown) through a chucking mechanism. The rotating base 1
A polishing device 5 including a whetstone sticking plate 3 to which a large number of whetstone chips 2 are stuck and a reference plate 4 mounted to the upper surface of the whetstone sticking plate 3 is detachably mounted by a fixing means such as a bolt 6. ing.

That is, the polishing apparatus 5 includes a large number of grindstone chips 2, a grindstone sticking plate 3 for sticking the grindstone chips 2, and a bolt 7 on the upper surface of the grindstone sticking plate 3.
The reference plate 4 is assembled by a fixing means such as. And the above-mentioned grindstone pasting plate 3
On the whetstone mounting surface of the whetstone, a spot facing portion 8 for sticking a large number of grindstone tips 2 in a regular arrangement is formed, and the grindstone sticking plate 3 penetrates through the center of the spot facing portion 8. A hole 9 is formed.

Further, the grindstone attaching plate 3 is formed into a disk shape by using a material such as metal or ceramics, and a spot facing portion 8 formed on the grindstone attaching plate 3 is formed.
Around the circumference of, a taper-shaped chamfer 8a is provided so that the heights of the attachment surfaces when a large number of grinding stone chips 2 are attached are uniform.

Next, the case of assembling the polishing apparatus 5 will be described. First, each spot facing portion 8 of the grindstone sticking plate 3 is filled with a predetermined adhesive 10 and the grindstone chips 2 are stuck respectively. After drying, the reference plate 4 is assembled with the bolt 7 on the upper surface of the grindstone attachment plate 3 (the surface opposite to the grindstone tip attachment surface).

Here, the adhesive 10 filled in the spot facing portion 8 of the grindstone attaching plate 3 does not protrude to the periphery of the grindstone tip 2 even when the grindstone tip 2 is stuck, and the extra adhesive 10 is provided in the hole 9. Flowing into the inside of the grindstone, and as a result, the grindstone chip 2 can be evenly stuck to the grindstone sticking plate 3, and the grindstone chip 2 does not protrude around the grindstone chip 2.

The polishing apparatus 5 assembled in this way
Is the rotary base 1 of the polishing machine using the bolts 6 etc.
Assembled to. Then, while rotating the upper shaft for rotation, the grindstone chip 2 of the polishing device 5 mounted on the rotary base 1 is pressed against the surface of the workpiece to perform polishing.

If, as a result of the polishing process, the grindstone tip 2 attached to the grinder 5 is worn, the grinder 5 is removed from the rotary base 1, and the reference plate 4 is removed from the upper surface of the grindstone adhering plate 3, Grindstone pasting plate 3
A jig (not shown) such as a grindstone removing pin is inserted through the hole 9 from the side opposite to the grindstone pasting surface, and the whetstone chip 2 is peeled off from the grindstone pasting plate 3 by hitting with a hammer or the like.

After the above work is carried out and the grindstone chips 2 are peeled off from the grindstone mounting plate 3, each spot facing portion 8 of the grindstone mounting plate 3 is again filled with a predetermined adhesive 10 to obtain a large number of new grindstone chips 2. It can be used again as the polishing device 5 by performing the work of reattaching. still,
Since the taper-shaped chamfer 8a is formed in the spot facing portion 8, the pressing force from above the jig such as the grindstone removing pin causes
The grindstone can be easily removed.

FIG. 3 is a partially cutaway front view showing a polishing apparatus according to a second embodiment of the present invention. The same members as those in the first embodiment are designated by the same reference numerals and described. Omit some.

As shown in the drawing, a counterbore 8 for attaching a large number of grindstone tips 2 in a regular array is formed on the grindstone mounting surface of the grindstone pasting plate 3, and the center of the counterbore 8 is formed. A hole 9 is formed in the portion. Further, the reference plate 4 assembled on the upper surface of the grindstone attaching plate 3 is formed with pin relief holes 11 corresponding to the positions of the holes 9 formed in the grindstone attaching plate 3.

Further, the spot facing portion 8 of the grindstone attaching plate 3
The pin escape hole 11 of the reference plate 4 through the twisted hole 9
Is provided with a flanged jig pin 12 to be inserted into the whetstone attachment plate 3 before the whetstone chip 2 is attached to the spot facing portion 8 of the whetstone attachment plate 3. It is designed to be inserted into the hole 9 from the boring portion 8.

Polishing device 5 using the above-mentioned flanged jig pin 12
When assembling, first, after inserting the flanged jig pin 12 into each countersunk portion 8 of the grindstone pasting plate 3, the predetermined adhesive 10 is filled in each countersunk portion 8 to attach the respective grindstone chips 2 to each other. After the attachment and the drying of the adhesive 10, the reference plate 4 is attached to the upper surface of the grindstone attachment plate 3 with the bolt 7. At this time, the flanged jig pin 12 inserted into the hole 9 from the spot facing portion 8 of the grindstone pasting plate 3 is inserted into the pin relief hole 11 of the reference plate 4 assembled on the upper surface of the grindstone pasting plate 3. It is designed to be positioned.

Polishing device 5 assembled in this way
Is attached to the rotary base 1 of the polishing machine by using a fixing means such as a bolt 6. Then, the grindstone tip 2 of the polishing apparatus 5 mounted on the rotary base 1 while rotating the upper rotary shaft.
Is pressed against the surface of the material to be processed for polishing.

The grindstone tip 2 attached to the polishing device 5
If the blade is worn, the polishing device 5 is removed from the rotary base 1, the reference plate 4 is removed from the upper surface of the grindstone attachment plate 3, and then the collar 9 inserted into the hole 9 from the spot facing portion 8 of the grindstone attachment plate 3. The whetstone chip 2 can be easily peeled off from the whetstone sticking plate 3 by hitting the attachment jig pin 12 with a hammer or the like.

When using the flanged jig pin 12,
Since almost the entire upper surface of the grindstone tip 2 can be pressed, the grindstone tip 2 can be removed more easily than in the case of a jig pin without a collar.

Next, as shown in FIG. 4, a taper-shaped chamfer corresponding to the taper-shaped chamfer of the spot facing is formed on the side surface of the grindstone tip opposite to the polishing surface. When each of the spot facing portions 8 of the attachment plate 3 is filled with a predetermined adhesive 10 and the grindstone tips 2 are respectively stuck thereto, the grindstone tips 2 can be easily positioned, and at the same time, firm and more stable sticking is possible. Become.

As shown in FIG. 5, instead of forming a tapered chamfer corresponding to the tapered chamfer of the counterbore on the side opposite to the polishing surface of the grindstone tip,
A jig 13 having a taper-shaped chamfer corresponding to the taper-shaped chamfer of the counterbore is adhered to the grindstone tip to form a taper.
A chamfered portion may be formed. As a material for the jig 13, a ceramic material such as iron or alumina is suitable in terms of strength and the like. Further, since the taper-shaped chamfered portion is formed on the grindstone chip or the jig 13 bonded to the grindstone chip to facilitate the positioning of the grindstone chip, the grinding surface of the grindstone chip is set to the lower surface of the grindstone pasting plate. It is easy to attach the grinding surfaces of the grinding stone chips on the parallel planes at the same height.

[0030]

As described in detail above, the present invention is
In a polishing device that is detachably attached to a rotary base that is integrally or separately attached to the lower end of the rotating upper shaft of a polishing machine, a grinding stone application plate to which a plurality of grinding stone chips are attached, and a grinding stone attachment surface of the grinding stone application plate Consists of a counterbore part for adhering the formed grindstone tip with an adhesive, a hole penetrating the central part of the counterbore part, and a reference plate assembled on the opposite surface of the grindstone attachment plate to the grindstone mounting surface. Therefore, it is possible to evenly attach the grindstone tip to the friction surface of the polishing device, and it is possible to firmly attach the grindstone tip as compared to the case where the grindstone tip is pasted using an adhesive tape or the like. it can.

Further, a taper chamfered portion corresponding to the taper chamfered portion of the spot facing portion is formed on a side surface of the grindstone tip opposite to the polishing surface, and the grindstone tip is provided. Has a configuration in which it is bonded to a jig having a taper chamfer corresponding to the taper chamfer of the counterbore, therefore, in each countersink of the whetstone sticking plate,
Firm and more stable application is possible. Further, the polishing surface of the grindstone tip can be easily attached to the lower surface of the grindstone attachment plate on a flat surface.

Further, when the grindstone tip attached to the grinder is worn, the grinder is removed from the rotary base, and the reference plate is removed from the upper surface of the grindstone sticking plate.
Insert a jig such as a grindstone removal pin from the hole of the grindstone sticking plate, and hit it with a hammer etc. to remove the grindstone tip from the grindstone sticking plate. Instead, it can be peeled off with a small amount of force.

Further, when the grindstone tip is reattached, the excess adhesive does not stick out around the grindstone tip.
The polishing function is stable and the life of the grindstone tip is extended.

Moreover, according to the present invention, the work of reattaching the grindstone tip to the grindstone adhering plate is easy, and the number of working steps can be greatly reduced.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing a polishing apparatus according to a first embodiment of the present invention.

FIG. 2 is a bottom view of FIG.

FIG. 3 is a partially cutaway front view showing a polishing apparatus according to a second embodiment of the present invention.

FIG. 4 is a front sectional view showing a modified example of the grindstone tip.

FIG. 5 is a front view showing a state in which a jig is attached to the grindstone tip.

FIG. 6 is a side view schematically showing a polishing machine having a conventional structure.

7 (a) and 7 (b) are vertical sectional views showing a structure of a conventional polishing apparatus.

[Explanation of symbols] 1 rotary base 2 grindstone tip 3 grindstone attachment plate 4 reference plate 5 polishing device 8 counterbore 9 hole 10 adhesive 13 jig

Claims (4)

[Claims] 1. A polishing apparatus detachably assembled to a rotary base integrally or separately attached to a lower end of a rotating upper shaft of a polishing machine. With a spot facing part to which the grindstone chip formed on the grindstone mounting surface of is adhered with an adhesive,
A polishing apparatus comprising: a hole penetrating a central portion of the spot facing portion; and a reference plate assembled to a surface opposite to a grindstone mounting surface of the grindstone attachment plate. 2. The polishing apparatus according to claim 1, wherein a taper-shaped chamfered portion is formed on the spot facing portion. 3. A taper-shaped chamfer corresponding to the taper-shaped chamfer of the counterbore is formed on a side surface of the grindstone tip opposite to the polishing surface.
The polishing apparatus according to. 4. The grindstone tip is a taper of the spot facing portion.
The polishing apparatus according to claim 2, which is bonded to a jig having a tapered chamfer corresponding to the chamfer.