Cutting of Ceramic Plates by Means of Spherical Surfaces

陶瓷板的球面切割

• 批准号: 05650127
• 负责人: HASHIMOTO Atsushi
• 金额: $ 1.28万
• 依托单位: Nihon University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05650127/
• 关键词: Ceramics; Cutting; Fracture; Crack Propagation

Concerning the development of a method for simultaneously cutting a large number of desired small shapes from ceramic plates, the following research results were obtained.The method presented is based on the use of two spherical surfaces, one being convex, the other being concave, and both being of the same radius of curvature. A ceramic plate (on which a line has been notched to define the shape of the desired cut) is interposed between the two spherical surfaces. If a compressive load is applied to the ceramic plate by way of the spherical surfaces, the ceramic plate becomes deformed along the point of contact of the spherical surfaces. Therefore, the bending moment will depend on the proportions relative to the spherical curvature, and furthermore, it will also depend on the presence of cracks in the ceramic plate along the notched line, and the extending of the crack along the entire length of the notch line to produce a line fracture in the ceramic plate. This method is an application which takes advantage of the progress of natural cracks occurring at the bending fractures of ceramic plates. In order to use this method, the proper curvature must be determined in advance and implemented in the spherical surfaces. With such a curvature having been implemented, a crack leading to a line francture can be produced in a single stroke of plate compression, and we can thereby simultaneously cut desired shapes from the ceramic plate. The significant characteristics of this method are that the cutting is done without generating noise or dust, the amount of energy required is very small, and the cutting time is very short. Therefore, it may be concluded that the cutting process presented here will be contributory to the improvement of productivity in the ceramics machining industry.

关于开发一种同时从陶瓷板上切割大量所需小形状的方法，获得了以下研究成果。该方法基于使用两个球面，一个是凸面，另一个是凹面，并且两者具有相同的曲率半径。陶瓷板（其上刻有一条线以限定所需切口的形状）插入两个球形表面之间。如果通过球面向陶瓷板施加压缩载荷，则陶瓷板沿着球面的接触点变形。因此，弯矩将取决于相对于球面曲率的比例，此外，还将取决于陶瓷板中沿切口线是否存在裂纹，以及裂纹沿切口线的整个长度延伸以在陶瓷板中产生线断裂。该方法是利用陶瓷板弯曲断裂时发生的自然裂纹的进展的应用。为了使用这种方法，必须预先确定适当的曲率并在球面上实现。通过实现这样的曲率，可以在板压缩的单个冲程中产生导致线断裂的裂纹，从而我们可以同时从陶瓷板切割出所需的形状。这种方法的显着特点是切割时不产生噪音或粉尘，所需能量很小，切割时间很短。因此，可以得出结论，这里介绍的切削工艺将有助于提高陶瓷加工行业的生产率。

项目成果

Atsushi Hashimoto: "Circle Cutting of Plate Glass by Use of Spherical Surface" Journal of the Japan Society for Precision Engineering. Vol.60, No.11. 1601-1605 (1994)

Atsushi Hashimoto：“利用球面对平板玻璃进行圆形切割”日本精密工程学会期刊。

橋本純: "球面座による板ガラスの円板切り" 精密工学会誌. 60. 1601-1605 (1994)

Jun Hashimoto：“使用球形座对平板玻璃进行圆盘切割”日本精密工程学会杂志 60. 1601-1605 (1994)。

橋本 純: "球面座による板ガラスの円板切り" 精密工学会誌. 60. 1601-1605 (1994)

Jun Hashimoto：“使用球形座对平板玻璃进行圆盘切割”日本精密工程学会杂志 60. 1601-1605 (1994)。