Tool for machining closing end of hexagonal self-locking nut and using method of tool

Abstract

The invention provides a tool for machining the closing end of a hexagonal self-locking nut. The tool comprises a machine tool chuck used for installing a core rod. The device further comprises a core rod, a gasket and a nut. An internal thread matched with the nut is arranged at the front end of the core rod; the nut is in threaded connection with the front end of the core rod; the gasket is sleeved in the middle of the core rod; the core rod and the nut are coaxial; the core rod is a stepped cylinder, and the diameter of the rear end of the core rod is larger than that of the front end of the core rod. The device is convenient to operate, locking between the nut and the core rod is avoided, the machined nut can be easily taken down, and surface loss of the nut caused by forcibly taking down the nut through a tool is avoided.

Description

Technical Field

[0001] The invention belongs to the field of mechanical processing tools, and in particular relates to a tool for processing the closing end of a hexagonal self-locking nut and a use method thereof. Background Art

[0002] Hexagonal self-locking nuts are new internal thread fasteners with high-precision internal and external concentric bodies. When processing such products in the aerospace field, the internal thread is generally processed first, and then the closing end is processed. When processing the closing end, a threaded mandrel is fixed on the lathe to position the internal thread of the product on the mandrel. After the closing end is processed, a wrench corresponding to the size of the hexagonal surface is used to remove the product. Because the machine tool rotates at high speed, the locking force between the product and the mandrel is large due to the force during processing. It is a big problem to remove the workpiece after completion, especially when the shape is a hexagonal surface, which is a broken cutting. The cutting resistance during processing is large. The product is locked tightly with the mandrel, so it is difficult to remove the product, and it is easy to damage the surface quality of the product. It is easy to slip and hurt your hands when wrenching, which creates unsafe hazards. Summary of the invention

[0003] In view of the above problems, the purpose of the present invention is to provide a tool that can be easily detached from the tool after processing the closing end of the hexagonal self-locking nut to avoid damaging the surface of the nut.

[0004] The present invention is achieved through the following technical solutions: A tool for processing the closing end of a hexagonal self-locking nut, comprising a machine tool chuck for installing a core rod; also comprising a core rod, a washer and a nut; the front end of the core rod is provided with an internal thread matching the nut; the nut is threadedly connected to the front end of the core rod; the washer is sleeved on the middle part of the core rod; the core rod and the nut are on the same axis; the core rod is provided with a stepped column, and the rear end diameter is larger than the front end diameter.

[0005] A method for using a tool for processing a hexagonal self-locking nut end, comprising the following steps: A. Put the washer on the front end of the mandrel, and then install the nut thread to be processed on the front end of the mandrel. At this time, the gap between the nut and the washer is 1 to 2 mm; B. Clamp the rear end of the mandrel on the chuck of the machine tool. At this time, the nut and the washer are tightly attached. After clamping, you can start processing. During the processing, you can prepare another one according to step A, and directly replace it after the previous one is processed; C. After the nut end is processed, loosen the machine chuck and remove the core rod. At this time, because there is a gap between the nut and the washer during assembly, the nut and the core rod are loose, and the nut can be unscrewed by hand.

[0006] Beneficial effects of the present invention: The present invention is easy to operate, avoids locking between the nut and the core rod, can easily remove the processed nut, and avoids using tools to forcibly remove the nut and causing surface loss of the nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present invention is further described in detail below with reference to the accompanying drawings.

[0008] Figure 1 It is a structural schematic diagram of the present invention.

[0009] As shown in the figure: 1- core rod; 2- washer; 3- nut; 4- machine tool chuck. DETAILED DESCRIPTION

[0010] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0011] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0012] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. It should be noted that the terms "include", "comprise" or any other variants are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0013] like Figure 1 The tooling shown is used for processing the closing end of a hexagonal self-locking nut, comprising a core rod 1, a washer 2, a nut 3, and a machine tool chuck 4.

[0014] The machine tool chuck 4 is of prior art and is used to mount the mandrel 1; The core rod 1 is a stepped column, the rear end diameter of which is larger than the front end diameter; the front end of the core rod 1 is provided with an internal thread matching the nut 3; the core rod 1 and the nut 3 are on the same axis.

[0015] The nut 3 is threadedly connected to the front end of the core rod 1; the nut 3 is a hexagonal self-locking nut.

[0016] The washer 2 is sleeved on the middle part of the core rod 1 .

[0017] A method for using a tool for processing a hexagonal self-locking nut end, comprising the following steps: A. Put the washer 2 on the front end of the mandrel 1, and then thread the nut 3 to be processed on the front end of the mandrel 1. At this time, the gap between the nut 3 and the washer 2 is 1 to 2 mm; B. Clamp the rear end of the mandrel 1 on the machine tool chuck 4. At this time, the nut 3 and the washer 2 are in close contact. After clamping, you can start processing. During the processing, you can prepare another one according to step A, and directly replace it after the previous one is processed; C. After the end of the nut 3 is processed, loosen the machine chuck 4 and remove the core rod 1. At this time, since there is a gap between the nut 3 and the washer 2 during assembly, the nut 3 and the core rod 1 are in a loose state, and the nut 3 can be unscrewed by hand.

[0018] The protection scope of the present invention is not limited to the technical solutions disclosed in the specific implementation methods. Any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A tool for processing the closing end of a hexagonal self-locking nut, comprising a machine tool chuck (4) for mounting a core rod (1); characterized in that: It also comprises a mandrel (1), a washer (2) and a nut (3); the front end of the mandrel (1) is provided with an internal thread matching the nut (3); the nut (3) is threadedly connected to the front end of the mandrel (1); and the washer (2) is sleeved on the middle part of the mandrel (1).

2. A tool for processing the closing end of a hexagonal self-locking nut according to claim 1, characterized in that The core rod (1) and the nut (3) are coaxial.

3. A tool for processing the closing end of a hexagonal self-locking nut according to claim 1, characterized in that The core rod (1) is a stepped column, the rear end diameter of which is larger than the front end diameter.

4. The method for using the tooling for processing the closing end of a hexagonal self-locking nut according to claim 1 is characterized in that : A. Put the washer (2) on the front end of the mandrel (1), and then install the nut (3) to be processed on the front end of the mandrel (1). At this time, the gap between the nut (3) and the washer (2) is 1 to 2 mm; B. Clamp the rear end of the mandrel (1) on the machine tool chuck (4). At this time, the nut (3) and the washer (2) are tightly attached. After clamping, the processing can be started. During the processing, another one can be prepared according to step A. After the previous one is processed, it can be directly replaced; C. After the end of the nut (3) is machined, loosen the machine chuck (4) and remove the mandrel (1). At this time, since there is a gap between the nut (3) and the washer (2) during assembly, the nut (3) and the mandrel (1) are loose, and the nut (3) can be unscrewed by hand.

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