Detachable combined countersink for countersinking in narrow area

Abstract

The utility model discloses a detachable combined countersink for countersinking in a narrow area, which comprises a countersink main body, a guide structure and a special connecting rod, a hollow counter bore is arranged in the middle of the countersink main body, the guide structure and the special connecting rod are detachably clamped at the front end of the countersink main body, a through hole is further arranged on the side surface of the countersink main body, and a limit rod is arranged in the through hole. Through the design of the hollow counter bore and the side face through hole of the countersink, connection between the countersink and the guide structure and the connecting rod is completed, forward and reverse cutting is achieved, and the countersink problem of narrow areas of various cabins is solved.

Description

Technical Field

[0001] This utility model belongs to the field of machining technology, specifically relating to a detachable combination countersink for countersinking in narrow areas. Background Technology

[0002] In the field of mechanical manufacturing and processing, countersinking is a common machining process, often occurring in confined spaces. The limited space increases the difficulty of machining. Existing solutions for confined spaces include: 1. Using small, specialized countersinks. These specialized countersinks are typically one-piece structures with small dimensions to adapt to narrow spaces, such as the dual-purpose countersink in patent number CN201710691480.4. However, these cannot be disassembled and must be reassembled according to the actual application scenario, limiting their usability; 2. Using the rotational motion of the machine tool to drive the countersink to cut the workpiece, such as a reverse countersinking tool in patent number CN201020511167.1, a countersink specifically designed for machine tools, but its application range is limited. 3. In certain narrow areas, an extension rod is used to connect a regular countersink to the processing area, such as an adjustable countersink with patent number CN201511024816.9. However, this structure can only be used for unidirectional processing and cannot achieve bidirectional processing.

[0003] Especially in the machining of cabin hulls, due to their generally complex structures, many narrow areas become impossible to machine, or their own structure interferes with machine tools, leaving no option but to manually countersink by a fitter or use special methods. Therefore, countersinking in narrow areas has always been an extremely challenging task. The limited space in narrow areas makes it difficult for conventional countersinking tools to reach the designated positions for effective operation. Furthermore, the confined space makes the installation, removal, and replacement of tools extremely inconvenient. For example... Figure 6 The nozzle shown requires countersunk holes on its exterior, but the presence of the outer bevel prevents its machining. Figure 7 The irregularly shaped cabin shown has an extremely narrow space, making it impossible to insert tools and directly prevent the drilling of the sinkhole.

[0004] Therefore, the current technical solutions for countersinking operations in narrow areas are mainly as follows: One-piece small special countersinks have poor versatility. A countersink of a certain specification can often only be used in narrow areas of specific size and shape. When processing requirements change, different countersinks need to be replaced, which is costly. The method of using an extension rod to connect ordinary countersinks is not feasible because the extension rod is not rigid enough and is prone to vibration during processing, which makes it difficult to guarantee the countersinking accuracy and results in poor surface roughness. Moreover, this connection method is inconvenient to operate in narrow spaces, and installation and disassembly are time-consuming and labor-intensive. Utility Model Content

[0005] To address the aforementioned problems, this invention aims to provide a detachable combined countersink for countersinking in narrow areas.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a detachable combined countersink for narrow areas, comprising a countersink body with a hollow countersunk hole in the middle, a guide structure and a special connecting rod detachably clamped to the front end of the countersink body, and a through hole is provided on the side of the countersink body, with a limit rod provided in the through hole.

[0007] Preferably, the hollow countersunk hole of the countersink body and the through hole opened on the side intersect each other and are interconnected.

[0008] Preferably, the special connection is composed of several rods nested together, one rod can slide inside another rod to achieve a telescopic function, and a side hole is provided on the last rod.

[0009] Preferably, the guide structure is a T-shaped structure, with a side hole at the end of the column, and the size of the guide block connected to the column can be adjusted according to the size of the countersink.

[0010] Preferably, the diameter of the side hole at the end of the special connecting rod and the guide structure is the same as the diameter of the limiting rod.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] (1) It is highly versatile and can adapt to narrow areas of various sizes and shapes through adjustable connecting rods, limit rods and detachable combination structures.

[0013] (2) The special structural design enhances the rigidity and stability of the cutting tool, effectively reduces vibration during the machining process, and ensures high precision and good surface quality of the counterboring.

[0014] (3) The combined countersink can be used in both forward and reverse directions through an adjustable length connecting rod, enabling cutting in both directions. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the specific embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the combined countersink in this utility model;

[0017] Figure 2This is a schematic diagram of the forward countersinking assembly in this utility model;

[0018] Figure 3 This is a schematic diagram of the reverse counterboring assembly in this utility model;

[0019] Figure 4 This is a schematic diagram of the application of forward countersinking in this utility model;

[0020] Figure 5 This is a schematic diagram of the reverse counterboring application in this utility model;

[0021] Figure 6 This is a schematic diagram of the nozzle countersinking hole;

[0022] Figure 7 Schematic diagram of countersinking holes for irregularly shaped cabins;

[0023] In the diagram, 1-the main body of the countersink; 2-the guide structure; 3-the special connecting rod; 4-the limiting rod. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. However, it should not be construed that the scope of the subject matter of the present invention is limited to the following embodiments. Any modifications, substitutions and alterations made based on ordinary technical knowledge and conventional means in the art without departing from the above-described technical concept of the present invention are included within the scope of the present invention.

[0025] Reference Figure 1 The technical problem to be solved by this utility model is to use a combined countersinking tool to solve the countersinking problem in various narrow areas of the cabin, and to ensure product quality.

[0026] This countersink assembly mainly consists of a countersink body 1 with a hollow countersunk hole in the middle, a front guide structure 2, a special connecting rod 3, and a limiting rod 4. See details for the specific structure. Figure 1 As shown, the countersink body 1 features a hollow countersunk hole at its vertical end and through holes on its side, ensuring its connection and positioning with the guide structure 2 and the special connecting rod 3. The guide structure 2 at the front end guides the countersink to the machining position accurately, ensuring the precision of the countersinking position. The special connecting rod 3 has adjustable length and angle functions, adapting to different environments, and can also be used to achieve reverse scraping countersinking.

[0027] In principle, during operation, the rotational motion of the machine tool is transmitted to the countersink body through a special connecting rod 3, enabling it to perform cutting. When used in the forward direction, the conventional cutting method is suitable for preliminary countersinking in most narrow areas; when used in the reverse direction, the special cutting edge structure design can be used to process narrow areas with special shapes or positions, thus expanding the processing range.

[0028] Action Relationship Explanation:

[0029] Reference Figure 2 and Figure 4 When it is necessary to perform countersinking in a narrow area, first select a suitable guide structure 2 according to the spatial characteristics and processing requirements of the area. The column of the guide structure 2 extends into the hollow countersunk hole of the countersink body 1. The side hole at the end of the guide structure 2 is aligned with the through hole starting on the side of the countersink body. The limiting rod 2 is then passed through the two holes to fix the guide structure 2. Then, the countersink is sent to the appropriate position, the machine tool is started, and the countersink is rotated. The guide structure 2 guides the countersink to accurately cut into the workpiece.

[0030] Reference Figure 3 and Figure 5 When reverse counterboring is required, a special connecting rod 3 is clamped in reverse on the chamber. The special connecting rod 3 is connected to the counterboring cutter body 1 through the limiting rod 4 to prevent the cutter bar from moving or rotating, and to the depth of the hole through the machine tool hole.

[0031] The detachable, self-assembling structure, including the hollow countersink body, guide section, limiting rod, and special connecting rod working together, along with the adjustable length of the connecting rod, is suitable for both forward and reverse cutting edge designs. This combined structure improves the countersink's versatility in confined areas, reducing machining costs; its special structural design enhances the tool's stability and rigidity when operating in narrow spaces; and it simplifies the installation, removal, and replacement of tools in confined areas, improving machining efficiency.

[0032] The foregoing has provided a detailed description of a detachable combined countersink for narrow areas provided by this utility model. Specific examples have been used to illustrate the structure and working principle of this utility model. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of this utility model.

Claims

1. A detachable combination countersink for countersinking in narrow areas, characterized in that: It includes a countersink body (1) with a hollow countersink hole in the middle, a guide structure (2) and a special connecting rod (3) that can be detachably clamped at the front end of the countersink body (1), and a through hole is also provided on the side of the countersink body (1), with a limit rod (4) provided in the through hole.

2. The detachable combined countersink for narrow areas according to claim 1, characterized in that: The hollow countersunk hole of the countersink body (1) and the through hole opened on the side intersect in a cross shape and are interconnected.

3. The detachable combined countersink for narrow areas according to claim 1, characterized in that: The special connection (3) is composed of several rods nested together. One rod can slide inside another rod to achieve telescopic function. A side hole is provided on the last rod.

4. The detachable combined countersink for narrow areas according to claim 1, characterized in that: The guide structure (2) is a T-shaped structure with a side hole at the end of its column. The size of the guide block connected to the column can be adjusted according to the size of the countersink.

5. The detachable combined countersink for narrow areas according to claim 1, characterized in that: The diameter of the side hole at the end of the special connecting rod (3) and the guide structure (2) is consistent with the diameter of the limiting rod (4).

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