Special clamp for flange milling machine of underground explosion-proof tank of coal mine
By designing a grid disk fixture, using limiting posts and protective posts to fix flanges of different shapes, and combining magnetic fixing and sealing layers, the high cost and low efficiency caused by multiple sets of fixtures are solved, and the versatility of the fixture and the production efficiency are improved.
Patent Information
- Application Number
- CN202520564535.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-28
AI Technical Summary
The existing explosion-proof box flange clamps in coal mines require the design of multiple sets to accommodate different models and sizes, resulting in high clamp costs and low production efficiency.
Design a fixture that includes a grid disk and threaded holes, and uses limit posts and protective posts to fix multi-shaped flanges. Combine magnetic fixing and sealing layers to prevent scratches from waste chips, thereby improving versatility and production efficiency.
The same fixture can process flanges of different shapes, reducing fixture costs, improving production efficiency, and simplifying the processing technology.
Smart Images
Figure CN223889407U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of production fixtures for explosion-proof boxes in coal mines, and provides a special fixture for flange milling machines for explosion-proof boxes in coal mines that is highly versatile, improves production efficiency, and reduces fixture costs. Background Technology
[0002] The flanges of existing explosion-proof boxes in underground coal mines are mostly disc-shaped, rectangular, or H-shaped. They are generally manufactured by drilling and milling the blanks on a milling machine. Because different flange models have different shapes and sizes, multiple sets of fixtures need to be designed to meet production needs, resulting in high fixture costs. Flange machining fixtures require separate workpiece clamping or holding mechanisms, making workpiece loading and unloading time-consuming and labor-intensive, leading to low production efficiency. Utility Model Content
[0003] In view of this, the purpose of this utility model is to provide a special fixture for milling machines of explosion-proof box flanges in coal mines that is highly versatile, improves production efficiency, and reduces fixture costs.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] This utility model provides a special fixture for milling flanges of explosion-proof boxes in coal mines, which includes a grid disk. Multiple grid plates on the operating table of the grid disk are provided with threaded holes. Some of the threaded holes are threadedly connected to limit posts, and other threaded holes are threadedly connected to protective posts made of rubber. The top surface of the limit post is higher than the top surface of the grid plate, and the top surface of the protective post is flush with or lower than the top surface of the grid plate.
[0006] To ensure that the processing waste does not scratch the sidewalls of the grid and to facilitate subsequent waste cleaning, the above solution further includes: filling the grooves formed between adjacent grids with a sealing layer.
[0007] The beneficial effects of this utility model are:
[0008] Due to the aforementioned structure, the same fixture can process explosion-proof box flanges of different shapes in coal mines, reducing the cost of the fixture. It is highly versatile, and the same fixture can perform milling and drilling on explosion-proof box flanges in coal mines, thereby improving production efficiency. Attached Figure Description
[0009] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:
[0010] Figure 1 This is a schematic diagram of the structure of this utility model;
[0011] Figure 2 This is a schematic diagram of the structure for processing disc-shaped workpieces according to this utility model;
[0012] Figure 3 This is a schematic diagram of the structure for processing rectangular or H-shaped workpieces according to this utility model;
[0013] Reference numerals: 1. Grid disk; 2. Operating table; 3. Grid plate; 4. Threaded hole; 5. Limiting post; 6. Protective post; 7. Sealing layer. Detailed Implementation
[0014] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0015] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.
[0016] like Figures 1 to 3As shown in the figure, the utility model provides a special fixture for a flange milling machine of an explosion-proof box in a coal mine, which includes a square grid magnetic disk 1. Threaded holes 4 are provided on multiple square grid plates 3 on the operation table 2 of the square grid magnetic disk 1. Some of the threaded holes 4 are threadedly connected with limit posts 5, and some of the threaded holes 4 are threadedly connected with protective posts 6 made of rubber material; the top plate surface of the limit post 5 is higher than the top plate surface of the square grid plate 3, and the top plate surface of the protective post 6 is flush with or lower than the top plate surface of the square grid plate 3. In this embodiment, the fixture of this solution is particularly suitable for processing flange blanks for explosion-proof boxes in coal mines applied in another case 202520534872X of this application. The flange blank is directly placed on the fixture of this solution for milling and drilling operations, so as to ensure the purpose of simplifying the processing technology and reducing the production process steps in the process of processing flanges for explosion-proof boxes in coal mines, and finally achieve the purpose of improving production efficiency. In this embodiment, the square grid magnetic disk 1 is modified on the basis of a commercially available Yuehao square grid magnetic disk, that is, threaded holes 4 are provided on the square grid plate 3 of the commercially available Yuehao square grid magnetic disk as needed, and limit posts 5 and protective posts 6 are respectively arranged at the threaded holes 4 according to the shape of the processed parts.
[0017] To ensure that the waste chips generated during processing do not scratch the side walls of the square grid plate 3 and facilitate subsequent cleaning of the waste chips, in the above solution, further: a sealing layer 7 is filled in the groove formed between adjacent square grid plates 3. In this embodiment, the sealing layer 7 is a soft sealing structure of a frame structure made of rubber material.
[0018] In the above embodiment, all components are products sold in the market. In the above embodiment, the square grid magnetic disk 1 is a commercially available product, and its structure and operation method will not be elaborated.
[0019] The clamping method described in the above embodiment is: Refer to the appendix Figure 2 , when the shape of the flange of the explosion-proof box in the coal mine is disc-shaped, the workpiece is placed on the operation table 2, and then it is limited by the limit post 5. The threaded holes 4 at other positions are blocked by the protective post 6 to prevent waste chips from blocking or scratching the inner wall of the threaded holes 4. Finally, the square grid magnetic disk 1 is started to generate strong magnetic force in its inner cavity to fix the workpiece on the operation table 2, and then milling and drilling are carried out through the milling machine. Refer to the appendix Figure 3 , when the shape of the flange of the explosion-proof box in the coal mine is rectangular or "day" shaped, the workpiece is placed on the operation table 2, and then it is limited by the limit post 5. The threaded holes 4 at other positions are blocked by the protective post 6 to prevent waste chips from blocking or scratching the inner wall of the threaded holes 4. Finally, the square grid magnetic disk 1 is started to generate strong magnetic force in its inner cavity to fix the workpiece on the operation table 2, and then milling and drilling are carried out through the milling machine.
[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A special fixture for milling flanges of explosion-proof boxes in coal mines, characterized in that: The disk includes a grid disk (1). Threaded holes (4) are provided on multiple grid plates (3) on the workbench (2) of the grid disk (1). Some of the threaded holes (4) are threaded to limit posts (5), and other threaded holes (4) are threaded to protective posts (6) made of rubber. The top surface of the limit post (5) is higher than the top surface of the grid plate (3), and the top surface of the protective post (6) is flush with or lower than the top surface of the grid plate (3).
2. The special fixture for milling flanges of explosion-proof boxes in coal mines according to claim 1, characterized in that: A sealing layer (7) is filled in the grooves formed between adjacent grid plates (3).