A grinding head for fine carving of concave and convex surfaces of curved mirrors

Abstract

The utility model discloses a grinding head for fine carving of the concave and convex surface of a curved mirror, comprising a grinding head body, wherein the grinding head body is provided with a joint axis, a limiting portion, a fine carving groove, a transition portion, a rough trimming portion and a vertical trimming portion in sequence from top to bottom, the diameter of the limiting portion is smaller than the diameter of the transition portion, the fine carving groove is arranged between the limiting portion and the transition portion, the groove bottom cross-section of the fine carving groove is arranged as an isosceles trapezoidal structure, an annular groove is arranged in the circumferential direction of the transition portion, the annular groove is arranged as a triangular structure, the diameter of the joint axis is smaller than the diameter of the limiting portion, the groove bottom of the fine carving groove is arranged at an angle of 13 degrees with the vertical direction, and the two sides of the rough trimming portion are arranged at an angle of 13 degrees with the vertical direction; the angle change of the hot-bent mirror after hot bending is simulated, and the fine carving groove is designed according to the glass thickness, the product size and the R value of the curved mirror to offset the size difference caused by the extension of the convex surface and the contraction of the concave surface during the hot bending process.

Description

Technical Field

[0001] The utility model relates to the technical field of fine-carving grinding heads for curved mirrors, in particular to a fine-carving grinding head for the concave and convex surface shape of a curved mirror. Background Art

[0002] The product dimensions in curved mirror glass processing are difficult to control as they are three-dimensional in shape. Changes in R value and thickness will affect the external contour dimensions. For example, if a five-axis linkage engraving machine is required for further processing after hot bending, the cost is relatively high.

[0003] The curved mirror is vertically engraved on the flat sheet before hot bending. After hot bending, the glass is deformed due to overall pulling. The convex size is larger than the concave size. The contact surface of the curved mirror housing is concave. The difference between the concave and convex surfaces is greater than 2.0mm. If the product is installed loosely or falls off, the concave size will not be installed properly. There are disadvantages in using the existing grinding head processing. The difference in the size of the concave and convex surfaces of the curved mirror is proportional to the thickness of the glass, and the size cannot be controlled and delivered according to the drawing. Chinese Patent Application No. 202320134542.2 A glass precision carving grinding head and a glass precision carving machine, including: a grinding head body, an isosceles trapezoidal groove is concave in the grinding head body, the bottom wall and two waist walls of the isosceles trapezoidal groove form processing surfaces, and the grinding surface of the grinding head is a vertical plate, which is suitable for the side processing of plane mirrors, but cannot meet the requirements of curved mirror processing. Similarly, Chinese Patent Application No. 202122866005.0 discloses a grinding head for grinding 3D watch mirrors of wearable devices, including a grinding head body and a fixed shaft fixed to the top center of the grinding head body. The outer side wall of the grinding head body is provided with 3D rough grinding surface, shape finishing grinding groove, shape rough grinding surface and 3D finishing grinding surface from top to bottom, which is also not suitable for curved mirror processing; in view of the above-mentioned problems, a curved mirror concave and convex surface shape precision carving grinding head is proposed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a fine-carving grinding head for the concave and convex surface of a curved mirror to simulate the angle change of a thermally bent mirror after thermal bending. According to the glass thickness, product size, and R value of the curved mirror, a fine-carving groove is designed to offset the size difference caused by the extension of the convex surface and the contraction of the concave surface during the thermal bending process, thereby effectively solving the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a grinding head for fine carving of the concave and convex surface of a curved mirror, comprising a grinding head body, the grinding head body being provided with a joint axis, a limiting portion, a fine carving groove, a transition portion, a rough trimming portion and a vertical trimming portion in sequence from top to bottom, the diameter of the limiting portion being smaller than the diameter of the transition portion, the fine carving groove being arranged between the limiting portion and the transition portion, the groove bottom cross-section of the fine carving groove being arranged as an isosceles trapezoidal structure, an annular groove being arranged in the circumferential direction of the transition portion, and the annular groove being arranged as a triangular structure.

[0006] Furthermore, the diameter of the joint shaft is smaller than the diameter of the limiting portion.

[0007] Furthermore, the bottom of the finely carved groove is set at an angle of 13 degrees with the vertical direction.

[0008] Furthermore, two sides of the rough trimming portion are arranged at an angle of 13 degrees with the vertical direction.

[0009] Furthermore, the centers of the joint axis, the limiting portion, the finely carved groove, the transition portion, the rough trimming portion and the vertical trimming portion are on the same straight line.

[0010] Furthermore, the rough trimming part is set to an isosceles trapezoidal structure, the particle size of the rough trimming part is 150 meshes, the particle size of the finely carved groove is 750 meshes, and the particle size of the vertical trimming part is the same as the particle size of the rough trimming part.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The structure is simple in design, and can solve the problems of curved mirror glass and casing loosening and falling without increasing the original processing procedures and processing costs. The designed fine-carved grooves, rough trimming parts and vertical trimming parts are not only suitable for the processing of curved mirrors, but also for the processing of flat mirrors, simulating the angle change of hot-bent mirrors after hot bending. The fine-carved grooves are designed according to the glass thickness, product size and R value of the curved mirror to offset the size difference caused by the extension of the convex surface and the contraction of the concave surface during the hot bending process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the utility model with angle markings;

[0015] Figure 3 This is a schematic diagram of the axonometric structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the improved housing and product installation structure of the utility model;

[0017] Figure 5 This is a schematic diagram of the improved front casing and product installation structure of the utility model.

[0018] In the figure: 1 joint shaft, 2 limiting part, 3 fine carving groove, 4 rough trimming part, 5 vertical trimming part, 6 annular groove, 7 transition part, 8 grinding head body, 9 plane glass, 10 housing. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] See also Figure 1-5 The utility model provides a technical solution: a fine carving grinding head for a concave and convex surface of a curved mirror, comprising a grinding head body 8, wherein the grinding head body 8 is provided with a joint axis 1, a limiting portion 2, a fine carving groove 3, a transition portion 7, a rough trimming portion 4 and a vertical trimming portion 5 in sequence from top to bottom, the centers of the joint axis 1, the limiting portion 2, the fine carving groove 3, the transition portion 7, the rough trimming portion 4 and the vertical trimming portion 5 are on the same straight line, and the plane glass can be trimmed by the vertical trimming portion 5, thereby improving the practicality of the grinding head, the diameter of the limiting portion 2 is smaller than the diameter of the transition portion 7, and the transition portion 7 is used to separate the fine carving groove 3 from the rough trimming portion 4, the fine carving groove 3 is arranged between the limiting portion 2 and the transition portion 7, and the groove bottom cross-section of the fine carving groove 3 is arranged to be an isosceles trapezoidal structure, and the curved mirror is polished by the fine carving groove 3 so that the polishing size meets the requirements, and the installation effect is as shown in the attached figure. Figure 4 As shown, an annular groove 6 is provided in the circumferential direction of the transition portion 7, and the annular groove 6 is arranged in a triangular structure. The annular groove 6 plays a dividing role and is suitable for distinguishing the rough trimming portion 4 from the transition portion 7 to avoid operating on the transition portion 7 during grinding. The diameter of the joint shaft 1 is smaller than the diameter of the limiting portion 2.

[0021] The bottom of the fine-carved groove 3 is set at an angle of 13 degrees with the vertical direction, and the two sides of the rough trimming part 4 are set at an angle of 13 degrees with the vertical direction. Through the designed 13-degree angle, the polished size of the fine-carved groove 3 meets the requirements of the drawing.

[0022] The rough trimming part 4 is set as an isosceles trapezoidal structure, the particle size of the rough trimming part 4 is 150 meshes, the particle size of the fine-carved groove 3 is 750 meshes, and the particle size of the vertical trimming part 5 is the same as the particle size of the rough trimming part 4. When grinding the curved mirror, first perform rough trimming through the rough trimming part 4, and then perform fine trimming through the fine-carved groove 3 to meet the processing size requirements.

[0023] The precision engraving tool of this scheme is designed with angles according to the changes on both sides of the glass after thermal bending to offset the size difference and meet the requirements of the drawing. The installation effect after grinding with this grinding head is as shown in the attached figure. Figure 4 As shown in the figure, the installation effect of the original grinding head after grinding is as shown in the attached Figure 5 shown.

[0024] The basic principles, main features and advantages of the present invention are shown and described above. Without departing from the spirit and scope of the present invention, the present invention may also be subject to various changes and improvements, which are all within the scope of the present invention to be protected.

Claims

1. A grinding head for fine carving of a concave and convex surface of a curved mirror, comprising a grinding head body (8), characterized in that: The grinding head body (8) is provided with a joint shaft (1), a limiting portion (2), a finely carved groove (3), a transition portion (7), a rough trimming portion (4) and a vertical trimming portion (5) in sequence from top to bottom. The diameter of the limiting portion (2) is smaller than the diameter of the transition portion (7). The finely carved groove (3) is arranged between the limiting portion (2) and the transition portion (7). The groove bottom cross-section of the finely carved groove (3) is arranged to be an isosceles trapezoidal structure. The transition portion (7) is provided with an annular groove (6) in a circumferential direction. The annular groove (6) is arranged to be a triangular structure.

2. A grinding head for fine carving of concave and convex surfaces of curved mirrors according to claim 1, characterized in that: The diameter of the joint shaft (1) is smaller than the diameter of the limiting portion (2).

3. A grinding head for fine carving of concave and convex surfaces of curved mirrors according to claim 1, characterized in that: The bottom of the finely carved groove (3) is arranged at an angle of 13 degrees with the vertical direction.

4. A grinding head for fine carving of concave and convex surfaces of curved mirrors according to claim 1, characterized in that: Two sides of the rough trimming portion (4) are arranged at an angle of 13 degrees with the vertical direction.

5. The grinding head for fine carving of concave and convex surfaces of curved mirrors according to claim 1, characterized in that: The centers of the joint shaft (1), the limiting portion (2), the finely carved groove (3), the transition portion (7), the rough trimming portion (4) and the vertical trimming portion (5) are on the same straight line.

6. The grinding head for fine carving of concave and convex surfaces of curved mirrors according to claim 1, characterized in that: The rough trimming portion (4) is configured as an isosceles trapezoidal structure, the particle size of the rough trimming portion (4) is 150 meshes, the particle size of the finely carved groove (3) is 750 meshes, and the particle size of the vertical trimming portion (5) is the same as the particle size of the rough trimming portion (4).

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