Fixture positioning mechanism for mirror frame machining

Abstract

The utility model relates to the technical field of glasses production instruments, in particular to a glasses frame machining clamp positioning mechanism. A mirror frame machining clamp positioning mechanism comprises a clamping base and a machining clamp installed on the clamping base, two alignment grooves with openings in the side edges are formed in the clamping base, the bottom of the machining clamp is fixedly connected with alignment blocks matched with the alignment grooves, and the bottom of the clamping base is fixedly connected with a clamping air cylinder. A clamping block for clamping the alignment block in the alignment groove is fixedly connected to a telescopic rod of the clamping air cylinder, an installation groove is formed in the side wall of the alignment groove, a checking block is arranged in the installation groove, a checking curved surface is arranged on the inner side face of the checking block, and a butt joint block matched with the checking curved surface is installed on the side edge of the alignment block. Wrong machining clamps are checked and screened, and errors and waste in follow-up machining are avoided; the consistency of machining positioning parameters can be kept, the positioning parameters do not need to be repeatedly adjusted, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of glasses production equipment, in particular to a frame processing fixture positioning mechanism. Background Art

[0002] Glasses are a combination of lenses and frames used to improve vision, protect the eyes, or for decorative purposes. Glasses can correct a variety of vision problems, including myopia, hyperopia, astigmatism, presbyopia, strabismus, or amblyopia.

[0003] The glasses frame is an important component of the glasses, and the glasses frame mainly consists of two frames, a center beam and a nose pad. At present, general metal frames are welded by laser welding, but the welding requires manual positioning of the various components of the glasses frame before welding. It is still difficult to ensure the welding accuracy, resulting in a high scrap rate and relatively low welding processing efficiency. In order to solve the above problems, China's utility model patent CN214770020U (announcement date 2021.11.19) provides a glasses frame welding fixture, which uses a left clamping component, a right clamping component and a center beam clamping component to independently press and fix different welding points. There is no interference with each other during clamping and fixing, which effectively improves the precise positioning of the glasses frame, making the fixture suitable for docking processing of various types of glasses.

[0004] However, different types of eyeglass frames generally have different welding points and process requirements, so the fixtures used will also be different. In actual production, in order to improve production efficiency, frames are generally processed in batches according to type, model, etc. If different fixtures are not distinguished during loading, it is easy to cause subsequent processing errors and waste. Utility Model Content

[0005] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0006] A frame processing fixture positioning mechanism includes a clamping base and a processing fixture installed on the clamping base, the clamping base is provided with two alignment grooves with side openings, the bottom of the processing fixture is fixedly connected to an alignment block adapted to the alignment groove, the bottom of the clamping base is fixedly connected to a clamping cylinder, the telescopic rod of the clamping cylinder is fixedly connected to a clamping block that clamps the alignment block in the alignment groove, the side wall of the alignment groove is provided with an installation groove, the installation groove is provided with an inspection block, the inner side surface of the inspection block is provided with an inspection curved surface, and the side of the alignment block is installed with a docking block that matches the inspection curved surface.

[0007] Furthermore, a guide hole is provided on the clamping base, and a guide rod is fixedly connected to the clamping block and is inserted into the guide hole and slidably engaged with the guide hole.

[0008] Furthermore, an alignment post is fixedly connected to the groove wall of the alignment groove, and an alignment hole corresponding to the alignment post is provided on the alignment block.

[0009] Furthermore, the inspection block and the docking block are connected to the installation slot and the alignment block respectively by screws.

[0010] Furthermore, at least one set of inspection blocks and docking blocks is provided.

[0011] Furthermore, a support column is provided on the bottom of the alignment groove to support the alignment block so that a gap is formed between the bottom of the alignment block and the bottom of the alignment groove.

[0012] Compared with the prior art, the present invention has the following beneficial effects: when assembling a processing fixture, the compatibility of the processing fixture and the clamping base can be checked by checking the adaptability of the block and the docking block, so as to detect and screen out incorrect processing fixtures and avoid errors and waste in subsequent processing;

[0013] The side opening of the alignment groove makes the matching between the alignment groove and the processing fixture more flexible, and is suitable for processing fixtures of different specifications; and processing fixtures of different specifications are suitable for the same positioning groove, which is conducive to maintaining the consistency of processing positioning parameters, eliminating the need to repeatedly adjust positioning parameters and improving processing efficiency.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] Figure 2 It is a structural schematic diagram of the alignment groove in the utility model. DETAILED DESCRIPTION

[0018] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figures 1-2 A frame processing fixture positioning mechanism includes a clamping base 1 and a processing fixture 2 installed on the clamping base 1. The clamping base 1 is provided with two lateral openings of alignment grooves 11. The bottom of the processing fixture 2 is fixedly connected with an alignment block 3 adapted to the alignment groove 11. The bottom of the clamping base 1 is fixedly connected with a clamping cylinder 4. The telescopic rod of the clamping cylinder 4 is fixedly connected with a clamping block 41 for clamping the alignment block 3 in the alignment groove 11. The side wall of the alignment groove 11 is provided with a mounting groove 111. The mounting groove 111 is provided with an inspection block 112. The inner side surface of the inspection block 112 is provided with an inspection curved surface. The side of the alignment block 3 is provided with a docking block 31 that matches the inspection curved surface. Specifically, as Figure 2 As shown, the alignment block 3 slides into the alignment groove 11 from the side, the docking block 31 matches the inspection curved surface on the inspection block 112, and the clamping cylinder 4 drives the clamping block 41 to clamp the alignment block 3 to the alignment groove 11. When assembling the processing fixture 2, the compatibility of the inspection block 112 and the docking block 31 is checked to ensure that the processing fixture 2 and the clamping base 1 are compatible. This helps to identify and filter out incorrect processing fixtures 2 and avoid errors and waste in subsequent processing.

[0020] In addition, if Figure 2 As shown, the two side openings of the alignment groove 11 make the matching between the alignment groove 11 and the processing fixture 2 more flexible and suitable for processing fixtures 2 of different specifications; and processing fixtures 2 of different specifications are suitable for the same positioning groove 11, which is conducive to maintaining the consistency of processing positioning parameters, eliminating the need to repeatedly adjust the positioning parameters, and improving processing efficiency.

[0021] Furthermore, the clamping base 1 is provided with a guide hole 12, and the clamping block 41 is fixedly connected to a guide rod 411 that is inserted into and slidably engages with the guide hole 12. The guide rod 411 fixed to the clamping block 41 cooperates with the guide hole 12 in the clamping base 1 to ensure the stability and accuracy of the clamping block 41 during movement. The guide rod 411 should have good wear and corrosion resistance to reduce friction and wear.

[0022] Furthermore, an alignment post 113 is fixedly connected to the groove wall of the alignment groove 11, and an alignment hole 32 is provided on the alignment block 3 to match the alignment post 113. The alignment post 113 and the alignment hole 32 further improve the accuracy of positioning. In addition, Figure 2As shown, the alignment column 113 is arranged horizontally and is arranged on the opposite side of the clamping block 41 of the clamping cylinder 4. The alignment block 3 is loaded into the alignment groove 11, and the alignment column 113 is inserted into the alignment hole 32. The clamping block 41 of the clamping cylinder 4 cooperates with the groove wall of the alignment groove 11 to clamp the alignment block 3. The alignment column 113 and the alignment hole 32 are connected in alignment with the clamping block 41 to limit the position of the alignment block 3 in all directions, so that it is not easy to offset after loading is completed, and the alignment block 3 is prevented from loosening or falling off during the movement of the clamping base 1.

[0023] Furthermore, the inspection block 112 and the docking block 31 are respectively connected to the mounting groove 111 and the alignment block 3 using screws. The screw connection method is convenient for installing and removing the inspection block 112 and the docking block 31, and is also convenient for adjusting or replacing according to different processing fixtures 2.

[0024] Furthermore, at least one set of inspection blocks 112 and docking blocks 31 can improve the accuracy and reliability of inspection. In addition, the number and position of inspection blocks 112 and docking blocks 31 can be appropriately increased to adapt to different matching requirements of processing fixtures 2.

[0025] Furthermore, a support column 114 is provided on the bottom of the alignment groove 11 to support the alignment block 3 so that a gap is formed between the bottom of the alignment block 3 and the bottom of the alignment groove 11. Specifically, the support column 114 is threadedly connected to the clamping base 1 to facilitate adjustment of the height of the support column 114. The gap formed between the bottom of the alignment block 3 and the bottom of the alignment groove 11 allows a certain tolerance range and fine-tuning space for the alignment block 3, reducing machining precision requirements, saving machining costs, and making the alignment process more flexible and precise.

[0026] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

Claims

1. A frame processing fixture positioning mechanism, comprising a clamping base and a processing fixture mounted on the clamping base, characterized in that: The clamping base is provided with two alignment grooves with side openings, and the bottom of the processing fixture is fixedly connected with an alignment block adapted to the alignment groove. The bottom of the clamping base is fixedly connected with a clamping cylinder, and the telescopic rod of the clamping cylinder is fixedly connected with a clamping block that clamps the alignment block in the alignment groove. The side wall of the alignment groove is provided with an installation groove, and an inspection block is provided in the installation groove. The inner side of the inspection block is provided with an inspection curved surface, and a docking block matching the inspection curved surface is installed on the side of the alignment block.

2. A frame processing fixture positioning mechanism according to claim 1, characterized in that: A guide hole is provided on the clamping base, and a guide rod is fixedly connected to the clamping block and is inserted into the guide hole and slidably matched with the guide rod.

3. A mirror frame processing fixture positioning mechanism according to claim 1, characterized in that: An alignment post is fixedly connected to the groove wall of the alignment groove, and an alignment hole corresponding to the alignment post is provided on the alignment block.

4. A mirror frame processing fixture positioning mechanism according to claim 1, characterized in that: The inspection block and docking block are connected to the installation slot and alignment block respectively with screws.

5. A mirror frame processing fixture positioning mechanism according to claim 1 or 4, characterized in that: At least one set of inspection blocks and docking blocks is provided.

6. A frame processing fixture positioning mechanism according to claim 1, characterized in that: A support column is provided on the bottom of the alignment groove to support the alignment block so that a gap is formed between the bottom of the alignment block and the bottom of the alignment groove.

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