JP3390842B2 - Chamfering and mirror polishing method for plate-like work - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate-like product made of a hard material such as glass or crystal, and is a very small and very thin material such as a crystal plate for a crystal unit. Therefore, the present invention relates to a chamfered plate-like work and a method for chamfering and mirror-polishing a plate-like work therefor for a very small product, which has been difficult to chamfer a large number of sheets at once.

[0002]

Chamfering is widely practiced on all industrial products. Especially in the case of industrial products such as quartz plates for quartz oscillators made of hard materials such as glass and quartz, and with a finishing process by polishing, the presence or absence of chamfering affects the finished state of the final product. It is a big factor.

Therefore, as shown in FIG.
Is held by a jig 42 and chamfered by using a rotary grindstone 43, or as shown in FIG.
A method using a barrel polishing means in which the plate-like work 41 is housed together with 5 and polished by rotating is generally used.

[0004]

However, in the former case, the plate-like work 41 is supported and processed as a single piece in most cases. In this case, although each chamfering angle can be freely set and the processing accuracy can be maintained high, it is very inefficient and it is extremely difficult to reduce the processing cost.

Further, for example, Japanese Examined Patent Publication No. 53-39740 discloses a method in which plate-like works are superposed with a spacer interposed therebetween and a chamfering process is performed using a linear grindstone in order to process a plurality of pieces at once. However, there is a limit to the reduction of the diameter of the linear grindstone, and the plate-like work is also required to have a certain degree of rigidity, so that it cannot be applied to an extremely thin plate-like work such as a crystal oscillator.

In the latter method using the barrel polishing means, since the plate-like work 41 is turned over inside the rotary drum during polishing to polish both front and back surfaces, the plate-like work 41 itself is required to have a certain size and weight. It Therefore, miniaturization of the plate-shaped work 41 cannot be supported.

Moreover, the chamfering angle is large, and it is difficult to chamfer to about 45 degrees, and the cross section often becomes a convex lens shape. Moreover, since the plate-like works 41 come into contact with each other, there is a serious drawback that the surface of the plate-like works 41 is easily scratched.

Further, conventionally, for example, the orientation flat 4 shown in FIG.
When the plate-like work 41 having a shape having 6 is obtained,
Since there was no way to chamfer this all at once,
First of all, it was necessary to process the whole into a circular shape and then to perform the processing step of deleting the notch. Therefore, it is necessary to chamfer the required parts each time,
It was very troublesome. Moreover, when removing the material, it was necessary to always include the deleted portion for the orientation flat, which was very wasteful.

Particularly in the manufacture of crystal oscillators, chipping is unavoidable if a flat surface is polished without chamfering, resulting in low oscillation strength and low added value. The applied ones were very expensive.

The present invention is intended to solve the above-mentioned drawbacks of the prior art, and since it is laminated with an adhesive, even if it is small in size and thin, the surface is not scratched, and it is of high quality and at low cost. It is intended to provide a plate-shaped work of.

Another object of the present invention is to provide a method for chamfering and mirror-polishing a plate-like work for obtaining a low-cost plate-like work which has no scratches on its surface.

[0012]

That is, the present invention is a method for chamfering and mirror-polishing a plate-like work, which comprises the following steps. B) A step of stacking a large number of plate-like works so that the adhesive agent interposed in the middle has a uniform thickness. (B) A step of holding the laminated product obtained in the laminating step at both ends in the laminating direction. C) A step of polishing while sliding or rotating the end surface of the laminated product along the yarn surface direction of the plate-like work by the elastic polishing means whose rotation direction is perpendicular to the laminating direction of the laminated product. D) A step of peeling the intermediate adhesive to obtain a single plate-shaped work piece.

Further, the present invention can be a method for chamfering and mirror-polishing a plate-like work which comprises the following steps. B) A step of stacking a large number of plate-like works so that the adhesive agent interposed in the middle has a uniform thickness. (B) A step of holding the laminated product obtained in the laminating step at both ends in the laminating direction. C) A step of polishing the end surface of the laminated product while sliding the laminated product in the laminating direction by an elastic polishing means whose rotation direction is perpendicular to the laminating direction of the laminated product. D) A step of peeling the intermediate adhesive to obtain a single plate-shaped work piece.

The present invention may also be a method for chamfering and mirror-polishing a plate-like work including the following steps. A) After the step of laminating a large number of the plate-shaped works so that the adhesive agent interposed in the middle has a uniform thickness, the laminated product is bonded with the adhesive agent having a uniform thickness through the two intermediate plates. Weak adhesion between the two intermediate plates,
Also, the process of joining the plate-like work and the intermediate plate with a strong adhesive force. (B) A step of peeling between the two intermediate plates after polishing the end faces of the laminated product.

Since the present invention is constituted as described above, since it is laminated with an adhesive, even if it is small in size and thin, the surface thereof is not scratched, and the plate-like work is of high quality and low cost. Could be provided.

Further, according to the present invention, chamfering polishing and a mirror surface of a plate-like work for obtaining a plate-like work at a low cost with high quality and high accuracy in which the surface is not scratched and with a reduced number of steps. A polishing method could be provided.

Further, since the rotating brush used as the elastic polishing means in the chamfering polishing and mirror polishing method for the plate-like work can freely reduce the linear diameter according to the size of the plate-like work, the plate-like work of any size can be obtained. It could be applied to the work.

Further, it can be applied to polishing of plate-shaped works of various shapes, and the plate-shaped work to be obtained can be polished at an appropriate stage, so that the waste of material can be significantly reduced. It was possible to realize a significant cost reduction.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the method for chamfering and mirror-polishing a plate-like work according to the present invention will be described below in detail with reference to the drawings.

1 and 2 show one example of a polished plate-like product obtained by applying the present invention. The plate-shaped product 1 has a substantially circular shape in which an orientation flat 2 is formed on a part of the circumference. The surface is not scratched or the like, and each end face 3 from the arc portion to the straight orientation flat portion is chamfered. The chamfered portion 4 is chamfered substantially evenly on both sides of the end face and has a mirror-polished surface.

The chamfered portion 4 is obtained by a rotary brush described later, and the mirror-polished surface thereof is obtained by buffing.

FIG. 3 shows an embodiment of processing steps based on the chamfering polishing and mirror polishing method for a plate-like work according to the present invention.

First, a plate-like work 1 cut out from a raw material block 31 made of crystal, special glass, ceramics or the like.
Since No. 1 has scratches and distortion due to cutting, these are removed by grinding or the like as the primary processing. Next, a desired number of plate-like works 11 are adhered to each other with an adhesive 12 to form a laminated block 13.

When the laminated block 13 is formed,
As shown in FIG. 4, the intermediate plate 21 is provided between the laminated blocks 13.
It is also possible to obtain a composite block in which a plurality of laminated blocks 13 are connected by interposing two sheets. In that case, the space between the intermediate plates 21 is weak, and the intermediate plate 21 and the plate-shaped work 1 are
The adhesive 12 is determined in consideration of the fact that it becomes stronger between 1 and 1. By doing so, separation between the composite blocks after cutting or chamfering and separation of the intermediate plate 21 from each laminated block 13 can be easily performed.

Next, after supporting shafts 15 are attached to the central portions 14 at both ends of the laminated block 13 in the laminating direction, they are held by supporting means (not shown) having a slide and rotation mechanism. In the embodiment shown in FIG. 4, the laminated block is also used.
The supporting shaft 1 is provided at the center portions 14 at both ends of the stacking direction of the rack 13.
After attaching 5, support with slide and rotation mechanism
Holding by means of holding means that the thickness of the laminated block is
It is the same as the above except that it is changed. The arrow a indicates the sliding direction of the laminated block 13, and the arrow b indicates the movement of the laminated block 13 in the rotating direction.

A rotary shaft 16 is provided at a position facing the supporting means, and elastic polishing means including a rotary brush 17 is provided along the lengthwise direction of the laminated block 13.
In addition, the laminated block 13 is rotatably attached so as to have a length equal to or longer than that of the laminated block 13.

The rotary brush 17 is made of metal or non-metal such as resin, and its wire diameter and brush length are freely determined according to the material and dimensions (plate thickness, etc.) of the plate-like work 11. can do.

When chamfering the laminated block 13 with the rotating brush 17, the rotating brush 17 is rotated at a high speed, and the abrasive 19 is separately supplied from the abrasive supplying means 18 toward the surface of the laminated block 13.

Laminated block 13 supported by supporting means
Moves the laminated block 13 in the direction of the rotating brush 17 using a cam polishing mechanism or slides or rotates along the yarn surface direction of the plate-like work 11 while synchronizing the movement with the brush rotating shaft at high speed. By rotating
Whether the shape of the plate-like work 11 is square or circular, it can be processed regardless of its shape. Of course, by combining the above-mentioned mechanisms, it can be easily applied to the plate-like work 11 having a circular outer shape and an orientation flat formed on a part of the outer periphery thereof.

FIG. 5 shows the laminated block 1 when the rotary brush 17 chamfers each part of the laminated block 13.
3 shows the relationship between the rotating brush 17 and the rotating brush 17.

(A) shows the chamfering work of each side of the laminated block 13, and the laminated block 13 abutted against the rotating brush 17 rotating at a high speed is in the yarn surface direction of the plate-like work 11 shown by the arrow c. Slide straight along. At that time, the central portion in the width direction of the plate-like work 11 is smoothly polished at a predetermined speed. On the other hand, both ends in the width direction are more easily abraded than the center part due to roughness or chipping at the time of cutting, and chamfered at a good angle of about 45 degrees (shown by the middle dashed line) from the substantially rectangular outer shape shown by the outer dotted line. Processing is applied. At the same time, the laminated block 13 slides along the yarn surface direction of the plate-like work 11 to a position where it is removed from the plate-like work 11, and also rounds the corners of the plate-like work 11.

Next, the laminated block 13 is slid in the direction of the arrow d orthogonal to the arrow c. At this time, the chamfered portion of the plate-like work 11 at about 45 degrees is further rounded (shown by the inner solid line).

(B) shows the chamfering work of the corners of the plate-like work 11 performed by rotating the laminated block 13.

In the chamfering work, the rotary brush 17 is rotated at a predetermined position at a high speed as described above, and the laminated block 13 supported by the shaft 15 is first moved in the direction of the rotary brush 17 to move the laminated block 13 to the laminated block 13. The plate-like work 11 is abutted against the rotating brush 17 and then indicated by an arrow c.
Then, it is linearly slid in the direction of the thread surface of the above, and then in the direction shown by the arrow d orthogonal to the arrow c. In this state, the abrasive 1
Supply 9. The fine-grained abrasive grains 22 contained in the abrasive 19 flow into the contact portion 23 between the surface of the laminated block 13 and the brush tip, and are in charge of actual polishing.

Subsequent to the polishing step by the rotary brush 17, mirror polishing can be carried out by an elastic polishing means composed of a polishing pad or cloth which can be impregnated with an abrasive.

After the chamfering and mirror-polishing processes, the adhesive is removed with a solvent or the like and polishing in the finishing process is performed. However, the polishing process in the finishing process is included in the primary process. Thus, by separating the laminated block 13 into the single plate-shaped workpiece 11, it is possible to omit the finishing step and obtain the final product.

Further, as shown in FIG. 6, when taking out a plate-like work 11 having a circular outer shape and an orientation flat formed on a part of the outer periphery thereof, conventionally, as shown in FIG. The plate-like workpiece 11 was obtained by performing a predetermined chamfering and then removing the orientation flat. However, in the present invention, the plate-shaped workpiece 11 can be taken out from the original plate in a state where the orientation flat is formed from the beginning as shown in (b), and the original plate can be efficiently used.

[0038]

Since the present invention is constructed as described above,
Since it is laminated with the adhesive, it is possible to provide a high-quality and low-cost plate-like work which is small in size and thin and has no scratches on the surface.

Further, according to the present invention, chamfering polishing and mirror finishing of the plate-like work for obtaining a plate-like work at a low cost with high quality and high accuracy in which the above-mentioned surface is not scratched, and the number of steps is reduced. A polishing method could be provided.

Further, since the rotary brush used as the elastic polishing means in the chamfering polishing and mirror polishing methods for the plate-like work can freely reduce the linear diameter in accordance with the size of the plate-like work, the plate-like work of any size can be obtained. It could be applied to the work.

Further, the present invention can be applied to polishing of plate-shaped works of various shapes, and the plate-shaped work to be obtained can be polished at an appropriate stage, so that waste of material can be significantly reduced. It was possible to realize a significant cost reduction.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a chamfered plate-like work according to the present invention.

FIG. 2 is an enlarged cross-sectional view of the relevant part.

FIG. 3 is a process drawing showing an example of a processing process based on the chamfering polishing and mirror polishing method for a plate-like work according to the present invention.

FIG. 4 is a perspective view showing a method of joining the laminated blocks 13.

FIG. 5 shows the relationship between the laminated block 13 and the rotating brush 17 when chamfering each part of the laminated block 13 by the rotating brush 17, and (a) shows the chamfering work of each side of the laminated block 13. 8A is a schematic view showing a chamfering operation of a corner portion of the laminated block 13. FIG.

6A and 6B show a method of taking out a plate-shaped work 11 having a circular outer shape and an orientation flat formed on a part of the outer periphery thereof, where (A) is a conventional one and (B) is a plate-shaped one from a raw material block 31 according to the present invention. It is a top view showing how to take out work 11.

FIG. 7 is a schematic cross-sectional view showing a conventional chamfering method for each individual product.

FIG. 8 is a schematic sectional view showing a chamfering method by a conventional barrel polishing means.

FIG. 9 is a plan view showing a processing step of a conventional plate-like work having an orientation flat.

[Explanation of symbols]

1 Plate product 2 Orifla 3 end faces 4 chamfer 11 Plate work 12 Adhesive 13 laminated blocks 14 Center part 15 Supporting shaft 16 rotation axes 17 rotating brush 18 Abrasive supply means 19 Abrasive 21 Intermediate plate 22 Fine-grained abrasive grains 23 Contact part 31 Raw material block

Claims (3)

(57) [Claims] 1. A method for chamfering and mirror-polishing a plate-like work, which comprises the following steps. B) A step of stacking a large number of plate-like works so that the adhesive agent interposed in the middle has a uniform thickness. (B) A step of holding the laminated product obtained in the laminating step at both ends in the laminating direction. C) A step of polishing while sliding or rotating the end surface of the laminated product along the yarn surface direction of the plate-like work by the elastic polishing means whose rotation direction is perpendicular to the laminating direction of the laminated product. D) A step of peeling the intermediate adhesive to obtain a single plate-shaped work piece. 2. A method for chamfering and mirror-polishing a plate-like work, which comprises the following steps. B) A step of stacking a large number of plate-like works so that the adhesive agent interposed in the middle has a uniform thickness. (B) A step of holding the laminated product obtained in the laminating step at both ends in the laminating direction. C) A step of polishing the end surface of the laminated product while sliding the laminated product in the laminating direction by an elastic polishing means whose rotation direction is perpendicular to the laminating direction of the laminated product. D) A step of peeling the intermediate adhesive to obtain a single plate-shaped work piece. 3. The method for chamfering and mirror-polishing a plate-like workpiece according to claim 1, which comprises the following steps. A) After the step of laminating a large number of the plate-shaped works so that the adhesive agent interposed in the middle has a uniform thickness, the laminated product is bonded with the adhesive agent having a uniform thickness through the two intermediate plates. Weak adhesion between the two intermediate plates,
In addition, a process of joining a large number of plate-like works and intermediate plates with a strong adhesive force. (B) A step of peeling between the two intermediate plates after polishing the end faces of the laminated product .