JPH0474160B2 - - Google Patents
Info
- Publication number
- JPH0474160B2 JPH0474160B2 JP9092587A JP9092587A JPH0474160B2 JP H0474160 B2 JPH0474160 B2 JP H0474160B2 JP 9092587 A JP9092587 A JP 9092587A JP 9092587 A JP9092587 A JP 9092587A JP H0474160 B2 JPH0474160 B2 JP H0474160B2
- Authority
- JP
- Japan
- Prior art keywords
- workpiece
- cut
- plate
- compression plate
- compression
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000006835 compression Effects 0.000 claims description 21
- 238000007906 compression Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 4
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
Landscapes
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Description
【発明の詳細な説明】
発明の目的
産業上の利用分野
工作物、とくにガラス、セラミツクスの如き材
料を使用する光学機器、電子機器分野に係る。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The invention relates to the field of workpieces, particularly optical equipment and electronic equipment using materials such as glass and ceramics.
従来の技術
ガラス、セラミツクスの切断には予めダイヤモ
ンドカツターのような工具で条痕をつけておき、
これの曲げ加工により切断することが行われてい
た。Conventional technology When cutting glass or ceramics, scratches are created in advance using a tool such as a diamond cutter.
This was cut by bending.
発明が解決しようとする問題点
従来の曲げ加工の切断方法では時間と労力を要
するだけでなく、切断面が粗となる欠点があつ
た。Problems to be Solved by the Invention Conventional cutting methods for bending not only require time and effort, but also have the disadvantage that the cut surface is rough.
問題を解決するための手段
工作物のヤング率をE1とし、これを挾持する
圧板のヤング率をE2とし、E2＜E1の関係になる
ように工作物に対して圧縮板を選定し、かつ前記
工作物の表面に切断すべき形状の条痕とその条痕
上の適所に小穴を設けた圧縮板を介して工作物に
押圧荷重を加える。Means to solve the problem Let the Young's modulus of the workpiece be E 1 , and the Young's modulus of the pressure plate that clamps it be E 2. Select the compression plate for the workpiece so that the relationship E 2 < E 1 . Then, a pressing load is applied to the workpiece through a compression plate having grooves in the shape to be cut on the surface of the workpiece and small holes provided at appropriate positions on the grooves.
作用
押圧により圧縮板は工作物より大きく外方に拡
がろうとするので、両者の接触面において摩擦力
を生じ工作物は圧縮板により外方に引張られて工
作物はすべての条痕においてほぼ同時に引張応力
によつて切断する。Action Due to the pressure, the compression plate tries to expand outward to a greater extent than the workpiece, so a frictional force is generated at the contact surface between the two, and the workpiece is pulled outward by the compression plate, causing the workpiece to expand in all the grooves almost simultaneously. Cut by tensile stress.
実施例
本発明は工作物、とくにガラス板、セラミツク
ス板のぜい性材料を多重の正方形、長方形板およ
び三角形板を同時に切断することを目的とするも
のである。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is aimed at simultaneously cutting multiple square, rectangular and triangular plates from brittle materials such as workpieces, especially glass plates and ceramic plates.
先ず、本発明の切断方法の原理について説明す
る。 First, the principle of the cutting method of the present invention will be explained.
第１図においてＴは切断しようとする板状の工
作物、すなわち母材であつて、この材料のヤング
率をE1とする。 In FIG. 1, T is a plate-shaped workpiece to be cut, that is, a base material, and the Young's modulus of this material is E1 .
この工作物Ｔのヤング率E1より小さいヤング
率E2の２枚の圧縮板Ａの間に前記工作物を挾持
して加圧板Ｂによつて押圧荷重Ｗを加える。 The workpiece T is sandwiched between two compression plates A having a Young's modulus E 2 smaller than the Young's modulus E 1 of the workpiece T, and a pressing load W is applied by a pressure plate B.
図において加圧板Ｂは普通の圧縮試験に用いる
ものである。しかるとき圧縮板Ａは工作物Ｔより
も大きく外方に拡がろうとするので、両者の接触
面において摩擦力を生じ、工作物Ｔは圧縮板Ａに
よつて外方に引張られる。この結果、工作物Ｔと
圧縮板Ａの縦断面には、それぞれ引張応力と圧縮
応力を生ずる。しかし一般に材料の引張りによる
破壊強さは圧縮におけるものよりも小さく、たと
えばガラスでは引張り強さは約3.0Kgｆ／mm2であ
るに対し、圧縮強さは約80Kgｆ／mm2であるので、
工作物Ｔは摩擦により切断することができる。 In the figure, pressure plate B is used for ordinary compression tests. At this time, the compression plate A tends to expand outward more than the workpiece T, so a frictional force is generated at the contact surface between the two, and the workpiece T is pulled outward by the compression plate A. As a result, tensile stress and compressive stress are generated in the longitudinal sections of the workpiece T and compression plate A, respectively. However, the tensile strength of a material is generally lower than that in compression; for example, glass has a tensile strength of about 3.0 Kgf/ mm2 , while a compressive strength of about 80 Kgf/ mm2 .
The workpiece T can be cut by friction.
第２図は工作物Ｔが厚さ２mm、一辺50mmとした
ソーダガラスの正方形板を示す。 Figure 2 shows the workpiece T being a square plate of soda glass with a thickness of 2 mm and a side of 50 mm.
これを例えば16枚の正方形のガラス板に切断す
るには、先ず予めダイヤモンドカツターのような
工具で図示するようにガラス板の片面に条痕１を
つける。 To cut this into, for example, 16 square glass plates, first, use a tool such as a diamond cutter to make streaks 1 on one side of the glass plate as shown in the figure.
次に、第３図においてＡは圧縮板を示す。Ａの
材料は一辺を55mmとした厚さ５mmのアクリル
（PMMA）の正方形板であつて、これは工作物で
あるガラス板Ｔの条痕１の交叉するところ及び条
痕１が工作物の外縁と交叉するところに直径１mm
の小穴２を板厚方向に貫通するように設けてお
く。 Next, in FIG. 3, A indicates a compression plate. Material A is a square plate of acrylic (PMMA) with a side of 55 mm and a thickness of 5 mm.This is a workpiece where the striations 1 of the glass plate T intersect and where the striations 1 are located at the outer edge of the workpiece. 1mm in diameter where it intersects with
A small hole 2 is provided so as to pass through the plate in the thickness direction.
ところで、ガラスＴのヤング率E1は約7000Kg
ｆ／mm2、圧縮板であるアクリルＡのヤング率E2
は340Kg・ｆ／mm2である。 By the way, Young's modulus E 1 of glass T is about 7000Kg
f/mm 2 , Young's modulus E 2 of acrylic A, which is a compression plate
is 340Kg・f/mm 2 .
また、摩擦力はたとえば工作物が第２図に示す
ように正方形であれば、その中心線上に最大値と
なり、それより外方に行くにしたがつて順次減少
する。 Further, if the workpiece is a square as shown in FIG. 2, for example, the frictional force will have a maximum value on the center line of the workpiece, and will gradually decrease as it moves outward from the centerline.
したがつて、最初の切断は工作物の中心線上に
つけた条痕にそつておこり、その他の条痕にそつ
た切断は、その後の押圧荷重を増せば起きる。 Therefore, the first cut occurs along the line made on the center line of the workpiece, and cuts along other lines occur as the pressing load is increased thereafter.
かくして押圧荷重がある一定値に達すれば、す
べての条痕において工作物は切断される。 In this way, when the pressing load reaches a certain value, the workpiece is cut in all the striations.
ここにおいて、第１図に示すようにガラス板Ｔ
を圧縮板Ａで挾持して、加圧板Ｂに約2500Kg・ｆ
の押圧加荷Ｗを加えたところ、ガラス板Ｔはほと
んど同時に16個に切断された。 Here, as shown in FIG.
is clamped by compression plate A, and approximately 2500 kg・f is applied to pressure plate B.
When a pressing load W of
第４図に示すものは同じようなガラス板Ｔを16
個の三角形板に切断する場合を示すもので、この
場合は押圧荷重Ｗは約5000Kg・ｆで切断された。 The one shown in Figure 4 has 16 similar glass plates T.
This figure shows the case of cutting into three triangular plates, and in this case, the pressing load W was about 5000 kg·f.
なお、圧縮板Ａに小穴２を設けたのは、工作物
の条痕にそつて発生したクラツクが、その伝ぱ途
中で枝分れすることを防止するためである。これ
は圧縮板と工作物との接触面で生じる摩擦力が小
穴近傍で局部的に小さくなるので、工作物に発生
するクラツクの伝ぱ速度が、小穴のない圧縮板を
用いたときのものより低下するためである。 The small holes 2 are provided in the compression plate A in order to prevent cracks generated along the streaks of the workpiece from branching out during their propagation. This is because the frictional force generated at the contact surface between the compression plate and the workpiece becomes locally smaller near the small holes, so the propagation speed of cracks generated in the workpiece is lower than when using a compression plate without small holes. This is to do so.
効 果
本発明は単に押圧荷重を加えることにより工作
物と圧縮板との間においてヤング率の相違により
生ずる摩擦力によつて工作物のすべての条痕をほ
とんど同時に切断することができるので作業能率
が飛躍的に向上するとともに、しかもその破断面
が平滑である効果を有する。Effects The present invention can cut all the striations on the workpiece almost simultaneously by simply applying a pressing load and using the frictional force generated due to the difference in Young's modulus between the workpiece and the compression plate, improving work efficiency. This has the effect that the fracture surface is smooth and the fracture surface is smooth.
第１図は本発明の切断方法を説明す原理図。第
２図は工作物の平面図。第３図は圧縮板の平面
図。第４図は工作物の三角形切断の実施例であ
る。
記号の説明、Ｔ……工作物、Ａ……圧縮板、Ｂ
……加圧板、１……条痕、２……小穴。
FIG. 1 is a principle diagram illustrating the cutting method of the present invention. Figure 2 is a plan view of the workpiece. FIG. 3 is a plan view of the compression plate. FIG. 4 shows an example of triangular cutting of a workpiece. Explanation of symbols, T...workpiece, A...compression plate, B
...Pressure plate, 1...striation, 2...small hole.
Claims (1)
モンドカツターのような工具で切断すべき形状の
条痕を設け、次に前記条痕の交叉するところに相
当する位置に小穴を設けた圧縮板によつて挾持し
た状態において前記圧縮板に押圧荷重を加えて、
工作物と圧縮板との間に摩擦を生ぜしめて、前記
工作物の内部に引張応力を発生させて工作物を切
断することを特徴とする摩擦を利用した工作物切
断方法。1. On one side of the plate of the workpiece to be cut, use a tool such as a diamond cutter to create stripes in the shape of the shape to be cut, and then use a compression tool to make small holes at positions corresponding to the intersections of the stripes. Applying a pressing load to the compression plate while it is being held between the plates,
A method for cutting a workpiece using friction, characterized in that the workpiece is cut by creating friction between the workpiece and a compression plate to generate tensile stress inside the workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9092587A JPS63256400A (en) | 1987-04-15 | 1987-04-15 | Method of cutting work by utilizing friction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9092587A JPS63256400A (en) | 1987-04-15 | 1987-04-15 | Method of cutting work by utilizing friction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63256400A JPS63256400A (en) | 1988-10-24 |
| JPH0474160B2 true JPH0474160B2 (en) | 1992-11-25 |
Family
ID=14012009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9092587A Granted JPS63256400A (en) | 1987-04-15 | 1987-04-15 | Method of cutting work by utilizing friction |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63256400A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5862156B2 (en) * | 2011-09-26 | 2016-02-16 | 日産自動車株式会社 | Field pole magnet body manufacturing apparatus and method |
-
1987
- 1987-04-15 JP JP9092587A patent/JPS63256400A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63256400A (en) | 1988-10-24 |
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