Cutting method for removing cultivated diamond polycrystals

Abstract

The invention relates to a cutting method for removing cultivated diamond polycrystals, and belongs to the field of diamond polycrystal cutting. The method comprises the following steps: firstly, fixing the bottom surface of a cultivated diamond to be subjected to polycrystal removal through the suction force of an air suction clamp by adopting the air suction clamp; secondly, recognizing the contour of the bottom surface of the cultivated diamond, and obtaining the contour coordinates of the bottom surface of the cultivated diamond according to the recognized contour; and finally, by taking the growth surface as an identification object of the view field of cutting processing, converting the coordinates of the bottom surface contour into coordinates on the growth surface in the view field of cutting processing, and cutting processing is performed from the growth surface of the cultivated diamond according to the coordinates on the growth surface obtained by conversion. According to the method, the flat bottom face serves as a fixing face, the air suction clamp is adopted for fixing, glue pollution cannot be brought to the cultivated diamonds, it is guaranteed that the quality of the cultivated diamonds is not affected, and the method is more environmentally friendly.

Description

Technical Field

[0001] The invention relates to a cutting method for removing cultured diamond polycrystals, and belongs to the field of diamond polycrystal cutting. Background Art

[0002] like Figure 1 As shown, cultured diamonds need to go through multiple rounds of growth to reach the rough form. Before each round of growth, the growth layer of the diamond and the surrounding polycrystals and black edges need to be removed by laser processing to facilitate subsequent growth.

[0003] Since the polycrystals around the growth layer are irregular, the boundary of the bottom surface cannot be accurately located when cutting from the growth surface (the side of the growth layer). The surface used for fixing the cubic cultured diamond and the surface used for reference contour when cutting must be two opposite surfaces. Therefore, the current cutting method is to fix the growth surface so as to facilitate cutting along the outer contour of the bottom surface to ensure accurate positioning of the boundary of the bottom surface, such as Figure 2 As shown, Figure 2 The red line in the figure is the outer contour of the identified bottom surface; however, since the growth surface is often uneven, it is necessary to use an adhesive fixation method to fix the growth surface, and the glue will contaminate the cultured diamond and affect the quality of the cultured diamond. Summary of the invention

[0004] The purpose of the present invention is to provide a cutting method for removing cultured diamond polycrystals, so as to solve the problem that the current cutting method for removing cultured diamond polycrystals by using glue to fix the growth surface so as to facilitate cutting along the outer contour of the bottom surface will cause glue pollution.

[0005] In order to solve the above technical problems, the present invention provides a cutting method for removing cultured diamond polycrystals, which method comprises the following steps:

[0006] S1: Using an air suction fixture to fix the bottom surface of the cultured diamond to be removed by suction;

[0007] S2: Identify the contour of the bottom surface of the cultured diamond, and obtain the contour coordinates of the bottom surface of the cultured diamond according to the identified contour;

[0008] S3: Taking the growth surface as the identification object of the field of view for cutting processing, the bottom surface contour coordinates are converted into coordinates on the growth surface in the field of view for cutting processing, and cutting processing is performed from the growth surface of the cultured diamond according to the coordinates on the growth surface obtained by the conversion.

[0009] Furthermore, the air suction fixture generates suction through a vacuum pump connected thereto to fix the bottom surface of the cultured diamond from which the polycrystal is to be removed.

[0010] Furthermore, according to the coordinates on the growth surface obtained by the conversion, the method for cutting the growth surface of the cultured diamond includes: generating a cutting contour line on the growth surface in the field of view of the cutting process according to the coordinates on the growth surface obtained by the conversion, and setting the cutting process parameters according to the cutting contour line to cut according to the cutting contour line.

[0011] Furthermore, the contour of the bottom surface of the cultured diamond is identified, and a method for obtaining the contour coordinates of the bottom surface of the cultured diamond according to the identified contour includes: using a camera installed under the bottom of the cultured diamond, taking the bottom surface of the cultured diamond as the identification object of the camera's field of view, identifying the contour of the bottom surface of the cultured diamond, and obtaining the contour coordinates of the bottom surface of the cultured diamond.

[0012] Beneficial effects: As a pioneering invention, the present invention can identify the contour of the bottom surface of the cultured diamond from which the polycrystals are to be removed, and obtain the bottom surface contour coordinates corresponding to the cultured diamond according to the identified diamond bottom surface contour; convert the bottom surface contour coordinates into the cutting contour coordinates on the growth surface in the field of view of the cutting process, so as to accurately locate the bottom surface boundary on the growth surface, so that the cutting process can be performed on the growth surface of the cultured diamond, so that the cutting on the growth surface only needs to fix the opposite surface of the growth surface, that is, fix the bottom surface of the cultured diamond. Therefore, the method can use the flat bottom surface as the fixed surface, so as to ensure sufficient airtightness, so that the bottom surface of the cultured diamond from which the polycrystals are to be removed can be fixed by the suction of the air suction clamp, so that the glue pollution will not be brought to the cultured diamond, and the quality of the cultured diamond is guaranteed to be unaffected, and it is more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an appearance diagram of a diamond polycrystalline product in the background technology of the present invention;

[0014] Figure 2 It is a schematic diagram of the cutting profile corresponding to cutting a diamond polycrystal along the bottom surface profile in the background technology of the present invention;

[0015] Figure 3 is a flow chart of a cutting method for removing cultured diamond polycrystals in an embodiment of the cutting method for removing cultured diamond polycrystals of the present invention;

[0016] Figure 4 is a schematic diagram of components for identifying the bottom surface contour in an embodiment of the cutting method for removing cultured diamond polycrystals of the present invention;

[0017] Figure 5 It is a schematic diagram of components of a cutting method for removing cultured diamond polycrystals in an embodiment of the cutting method for removing cultured diamond polycrystals of the present invention;

[0018] Among them, 1 is the growth surface of the cultured diamond, 2 is the bottom surface of the cultured diamond, 3 is camera A, 4 is camera B, 5 is a computer, 6 is an air suction fixture, and 7 is a vacuum pump. Specific implementation methods

[0020] The specific implementation method of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] Embodiment of the cutting method for removing cultured diamond polycrystal

[0022] The present invention provides a technical solution for a cutting method for removing cultured diamond polycrystals, the method comprising the following steps:

[0023] S1: Using an air suction fixture to fix the bottom surface of the cultured diamond to be removed by suction;

[0024] S2: Identify the contour of the bottom surface of the cultured diamond, and obtain the contour coordinates of the bottom surface of the cultured diamond according to the identified contour;

[0025] S3: Taking the growth surface as the identification object of the field of view for cutting processing, the bottom surface contour coordinates are converted into coordinates on the growth surface in the field of view for cutting processing, and cutting processing is performed from the growth surface of the cultured diamond based on the coordinates on the growth surface obtained by the conversion.

[0026] The following is a flowchart of the cutting method for removing cultured diamond polycrystals. Figure 3 As shown, the method comprises the following steps:

[0027] S1: The bottom surface of the cultured diamond to be removed from the polycrystal is fixed by the suction of the air suction fixture; the flat bottom surface is used as the fixing surface for easy clamping, and the air suction fixture generates suction through the vacuum pump connected to it to fix the bottom surface of the cultured diamond to be removed from the polycrystal, which will not cause glue pollution to the cultured diamond, ensure that the quality of the cultured diamond is not affected, and is more environmentally friendly. The air suction fixture used in this embodiment is a common device in the prior art, and will not be described in detail here.

[0028] S2: Identify the contour of the bottom surface of the cultured diamond, and obtain the contour coordinates of the bottom surface of the cultured diamond according to the identified contour;

[0029] The method of identifying the contour of the bottom surface of the cultured diamond and obtaining the contour coordinates of the bottom surface of the cultured diamond according to the identified contour includes: using a camera installed under the bottom of the cultured diamond, taking the bottom surface of the cultured diamond as the identification object of the camera's field of view, identifying the contour of the bottom surface of the cultured diamond, and obtaining the contour coordinates of the bottom surface of the cultured diamond.

[0030] The schematic diagram of the components for identifying the bottom surface contour in this embodiment is as follows: Figure 4As shown in the figure, 1 refers to the growth surface of the cultured diamond, 2 refers to the bottom surface of the cultured diamond, and 3 refers to the camera A. The camera A is additionally installed under the bottom of the cultured diamond to provide a camera field of view of the bottom surface of the cultured diamond. The recognition software corresponding to the camera A is used to recognize the contour of the bottom surface of the cultured diamond to obtain the bottom surface contour coordinates of the cultured diamond. In this embodiment, the camera A with the corresponding recognition software is a prior art and will not be described in detail here.

[0031] S3: Taking the growth surface as the identification object of the field of view for cutting processing, the bottom surface contour coordinates are converted into coordinates on the growth surface in the field of view for cutting processing, and cutting processing is performed from the growth surface of the cultured diamond according to the coordinates on the growth surface obtained by the conversion (i.e., cutting processing is performed from the growth surface according to the coordinates on the growth surface).

[0032] The schematic diagram of the components of the cutting method for removing cultured diamond polycrystals in this embodiment is as follows: Figure 5 As shown, in the figure, 4 refers to camera B, 5 is a computer, 6 refers to an air suction fixture, and 7 is a vacuum pump. The cutting processing equipment used in this embodiment includes camera B, a laser cutting machine, and cutting processing software (the cutting processing software is installed on computer 5, and the recognition software corresponding to camera A is also installed on computer 5). The cutting processing equipment is a prior art and will not be described in detail here. Among them, camera B installed on the growth surface of the cultured diamond is used to provide a field of view of the growth surface. The cutting processing software combines with camera B to convert the bottom surface contour coordinates into the cutting contour coordinates on the growth surface, so that the bottom surface contour can be accurately located in the field of view corresponding to the growth surface.

[0033] The method for cutting a cultured diamond from its growth surface according to the coordinates on the growth surface obtained by conversion includes: generating a cutting contour line on the growth surface in a field of view of the cutting process according to the coordinates on the growth surface obtained by conversion, and setting cutting process parameters according to the cutting contour line so as to perform cutting according to the cutting contour line.

[0034] The cutting processing equipment generates a cutting contour line on the growth surface in the field of view of the cutting processing according to the coordinates on the growth surface obtained by conversion, and sets the cutting processing parameters according to the cutting contour line, so that the laser cutting processing machine cuts according to the cutting contour line.

Claims

1. A cutting method for removing cultured diamond polycrystals, characterized in that: The following steps are involved: S1: Using an air suction fixture to fix the bottom surface of the cultured diamond to be removed by suction; S2: Identify the contour of the bottom surface of the cultured diamond, and obtain the contour coordinates of the bottom surface of the cultured diamond according to the identified contour; S3: Taking the growth surface as the identification object of the field of view for cutting processing, the bottom surface contour coordinates are converted into coordinates on the growth surface in the field of view for cutting processing, and cutting processing is performed from the growth surface of the cultured diamond according to the coordinates on the growth surface obtained by the conversion.

2. The cutting method for removing cultured diamond polycrystals according to claim 1, characterized in that: The air suction fixture generates suction through a vacuum pump connected thereto to fix the bottom surface of the cultured diamond to be removed of polycrystals.

3. The cutting method for removing cultured diamond polycrystals according to claim 1 or 2, characterized in that: The method for cutting the growth surface of the cultured diamond according to the coordinates on the growth surface obtained by the conversion includes: generating a cutting contour line on the growth surface in the field of view of the cutting process according to the coordinates on the growth surface obtained by the conversion, and setting the cutting process parameters according to the cutting contour line to cut according to the cutting contour line.

4. The cutting method for removing cultured diamond polycrystals according to claim 1 or 2, characterized in that: The method of identifying the contour of the bottom surface of the cultured diamond and obtaining the contour coordinates of the bottom surface of the cultured diamond according to the identified contour includes: using a camera installed under the bottom of the cultured diamond, taking the bottom surface of the cultured diamond as the identification object of the camera's field of view, identifying the contour of the bottom surface of the cultured diamond, and obtaining the contour coordinates of the bottom surface of the cultured diamond.

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