Tail twisting plate for machining metal self-tapping screws penetrating thin steel plates and aluminum alloy plates

Abstract

The utility model discloses a tail-rolling plate for processing metal self-tapping screws penetrating thin steel plates and aluminum alloy plates, which comprises a first thread-rolling plate, a second thread-rolling plate and two forming parts, the first thread-rolling plate is suitable for being fixed on a machine tool, the second thread-rolling plate and the first thread-rolling plate are oppositely arranged, and the two forming parts are arranged on the first thread-rolling plate. A containing gap used for containing a screw to be machined is defined between the second thread rolling plate and the first thread rolling plate, and the second thread rolling plate is driven by a machine tool to do reciprocating motion in the length direction of the second thread rolling plate so as to be matched with the first thread rolling plate to machine threads on the upper portion of the screw to be machined. The two forming parts are arranged on the opposite faces of the first thread rolling plate and the second thread rolling plate correspondingly, the two forming parts are arranged in a mirror image mode and located on the lower portion of the first thread rolling plate and the lower portion of the second thread rolling plate, and the heights of the forming parts are gradually increased from the initial meshing ends of the first thread rolling plate and the second thread rolling plate to the other ends of the first thread rolling plate and the second thread rolling plate. The lower portion of the to-be-machined screw is machined to form a prismatic cambered surface, the lower portion of the prismatic cambered surface is machined to form an arc tip portion, the multi-structure forming machining can be conducted on the screw at the same time, and the production efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of screw processing, specifically to a self-tapping screw liner for processing metal self-tapping screws that penetrate thin steel plates and aluminum alloy plates. Background Technology

[0002] In the fastener manufacturing industry, washboard dies play a crucial role, processing specific parts of fasteners such as screws to ensure they meet specific functional and performance requirements. However, traditional washboard dies have many limitations in design and function, failing to meet the current market demand for diversified, high-precision, and high-efficiency fastener processing.

[0003] Specifically, traditional washboard dies are mainly limited to machining the screw tail into a rounded, pointed shape. While this design can meet basic connection requirements to some extent, in certain applications, rounded, pointed screws may not provide sufficient friction, leading to weak connections or easy loosening. To improve the fixing effect, some screws need to have multiple prismatic arc surfaces machined in the lower part to improve the stability and strength of the connection, and also to optimize the screw insertion process and reduce damage to the connected materials. This design has significant advantages in applications requiring high-strength connections and high-quality surfaces. However, traditional washboard dies cannot simultaneously machine threads, rounded, pointed tails, and prismatic arc surfaces, requiring secondary processing, resulting in lower production efficiency and increased costs.

[0004] Therefore, the industry urgently needs a new type of washboard die that can overcome the limitations of traditional washboard dies and simultaneously process screw threads, prismatic arc surfaces, and round pointed tails. This new die needs to have high processing accuracy and efficiency, and be able to meet the market's demand for diversified, high-precision, and high-efficiency processing of fasteners. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, the purpose of this utility model is to provide a self-tapping screw feeder for processing metal self-tapping screws that penetrate thin steel plates and aluminum alloy plates.

[0006] To achieve the above objectives, according to an embodiment of the present invention, a thread-rolling plate for processing metal self-tapping screws that penetrate thin steel plates and aluminum alloy plates includes a first thread-rolling plate, a second thread-rolling plate, and two forming parts.

[0007] The first thread rolling die is suitable for being fixed on a machine tool.

[0008] The second thread rolling plate is disposed opposite to the first thread rolling plate, and a receiving gap is defined between them to accommodate the screw to be processed. The second thread rolling plate is driven by a machine tool to reciprocate along its own length direction in order to cooperate with the first thread rolling plate to process threads on the upper part of the screw to be processed.

[0009] The two forming parts are respectively disposed on the opposite surfaces of the first thread rolling plate and the second thread rolling plate. The two forming parts are mirror images of each other and are located in the lower part of the first thread rolling plate and the second thread rolling plate. The height of the forming part gradually increases from the initial engagement end of the first thread rolling plate and the second thread rolling plate to the other end, so as to process a prismatic arc surface in the lower part of the screw to be processed, and to process a rounded tip below the prismatic arc surface.

[0010] In addition, the self-tapping screw board for processing metal self-tapping screws that penetrate thin steel plates and aluminum alloy plates according to the above embodiments of the present invention may also have the following additional technical features:

[0011] According to one embodiment of the present invention, the first thread rolling plate and the second thread rolling plate are both provided with thread rolling parts for processing threads on their opposite surfaces, and the two thread rolling parts are arranged in a mirror image.

[0012] According to one embodiment of the present invention, the surfaces of the two molding parts are provided with a plurality of molding grooves, the plurality of molding grooves are distributed at intervals along the length direction of the molding parts, and the height of the plurality of molding grooves is adapted to the height of the molding parts.

[0013] According to one embodiment of the present invention, an arc-shaped transition surface is formed between two adjacent molding grooves.

[0014] According to one embodiment of the present invention, the lower end of the portion of the forming groove that is away from the initial engagement end of the first thread rolling plate and the second thread rolling plate is bent into an arc shape towards the screw to be processed, so as to make the end of the screw to be processed into a rounded tip.

[0015] According to one embodiment of the present invention, the upper end of the forming groove near the initial engagement end of the first and second thread rolling plates is open in the plurality of forming grooves.

[0016] According to one embodiment of the present invention, the upper ends of the forming grooves that are far from the initial engagement ends of the first and second thread rolling plates are all closed.

[0017] According to an embodiment of this utility model, a thread-rolling plate for processing self-tapping screws that penetrate thin steel plates and aluminum alloy plates can efficiently process threads on the screws by means of the relative arrangement and coordinated movement of a first thread-rolling plate and a second thread-rolling plate. This design not only improves processing efficiency but also ensures the accuracy and consistency of the threads, providing a reliable guarantee for the subsequent use of the self-tapping screws. The special design of the forming part allows the thread-rolling plate to simultaneously process a prismatic arc surface and a rounded tip on the lower part of the screw. This effectively improves the screw processing efficiency and reduces processing costs.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this utility model;

[0021] Figure 2 This is an embodiment of the present utility model. Figure 1 Cross-sectional view;

[0022] Figure 3 This is a diagram showing the overall structural changes in an embodiment of this utility model;

[0023] Figure 4 This is a schematic diagram of the overall structure of the first thread rolling plate in this embodiment of the present invention;

[0024] Figure 5 This is a schematic cross-sectional view of the first thread rolling plate in an embodiment of this utility model.

[0025] Icon labels:

[0026] First thread rolling plate 10;

[0027] Thread rolling section 11;

[0028] Second thread rolling plate 20;

[0029] Molding part 30;

[0030] Forming groove 31;

[0031] Arc-shaped part 311;

[0032] Arc-shaped transition surface S;

[0033] Accommodation gap L.

[0034] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] The following describes in detail, with reference to the accompanying drawings, an embodiment of the present invention: a self-tapping screw for processing metal self-tapping screws that penetrate thin steel plates and aluminum alloy plates.

[0041] Reference Figures 1 to 5 As shown, a thread rolling plate for processing metal self-tapping screws that penetrate thin steel plates and aluminum alloy plates, according to an embodiment of the present utility model, includes a first thread rolling plate 10, a second thread rolling plate 20, and two forming parts 30.

[0042] The first thread rolling plate 10 is adapted to be fixed on a machine tool.

[0043] The second thread rolling plate 20 is disposed opposite to the first thread rolling plate 10, and a receiving gap L is defined between the second thread rolling plate 20 and the first thread rolling plate 10 for accommodating the screw to be processed. The second thread rolling plate 20 is driven by a machine tool to reciprocate along its own length direction in order to cooperate with the first thread rolling plate 10 to process threads on the upper part of the screw to be processed.

[0044] The two forming parts 30 are respectively disposed on the opposite surfaces of the first thread rolling plate 10 and the second thread rolling plate 20. The two forming parts 30 are mirror images of each other and are located in the lower part of the first thread rolling plate 10 and the second thread rolling plate 20. The height of the forming part 30 gradually increases from the initial engagement end of the first thread rolling plate 10 and the second thread rolling plate 20 to the other end, so as to process a prismatic arc surface in the lower part of the screw to be processed, and to process a rounded tip below the prismatic arc surface.

[0045] Based on the above, the relative arrangement and coordinated movement of the first thread rolling plate 10 and the second thread rolling plate 20 enable efficient threading on the screw to be processed. This design not only improves processing efficiency but also ensures the accuracy and consistency of the threads, providing a reliable guarantee for the subsequent use of self-tapping screws. The special design of the forming part 30 allows the tail plate to simultaneously process a prismatic arc surface and a rounded tip on the lower part of the screw to be processed. This effectively improves the screw processing efficiency and reduces processing costs.

[0046] Preferably, in one embodiment of the present invention, the first thread rolling plate 10 and the second thread rolling plate 20 are both provided with thread rolling parts 11 for processing threads on their opposite surfaces, and the two thread rolling parts 11 are arranged in a mirror image.

[0047] Thus, the mirrored arrangement of the thread rolling section 11 ensures that the first thread rolling plate 10 and the second thread rolling plate 20 act evenly and symmetrically on the screw to be processed during relative movement, thereby producing threads with higher precision. This symmetry reduces deviations and errors during the processing, and improves the consistency and reliability of the threads.

[0048] Preferably, in one embodiment of the present invention, the surfaces of the two forming parts 30 are provided with a plurality of forming grooves 31, the plurality of forming grooves 31 are distributed at intervals along the length direction of the forming part 30, and the height of the plurality of forming grooves 31 is adapted to the height of the forming part 30.

[0049] Thus, by using multiple forming grooves 31 spaced apart, the first thread rolling plate 10 and the second thread rolling plate 20 can form a prismatic arc surface on the lower outer surface of the screw during the thread rolling process, thereby achieving one-time forming of the prismatic arc surface and the thread. Advantageously, the forming groove 31 is V-shaped, which makes it easier to form the prismatic arc surface, and the area near the groove opening is formed as an arc surface.

[0050] Preferably, in one embodiment of the present invention, an arc-shaped transition surface S is formed between two adjacent forming grooves 31.

[0051] Thus, by forming an arc-shaped transition surface S between each pair of adjacent forming grooves 31, the screw can move with the movement of the second thread rolling plate 20 during the thread rolling process. This completes the thread rolling and prismatic arc surface processing.

[0052] Preferably, in one embodiment of the present invention, the lower end of a portion of the forming groove 31 that is away from the initial engagement end of the first thread rolling plate 10 and the second thread rolling plate 20 is bent toward the screw to be processed into an arc-shaped portion 311, so as to form the end of the screw to be processed into a rounded tip.

[0053] Thus, by bending the lower end of a portion of the forming groove 31 that is far from the initial engagement end of the first thread rolling plate 10 and the second thread rolling plate 20 toward the screw to be processed into an arc-shaped portion 311, during processing, when the screw passes through this portion, the arc-shaped portion 311 of the forming groove 31 can squeeze the side of the screw end, thereby forming an arc-shaped tip on the side of the screw near the end along its axial direction.

[0054] Preferably, in one embodiment of the present invention, the upper ends of the forming grooves 31 near the initial engagement ends of the first thread rolling plate 10 and the second thread rolling plate 20 are all open.

[0055] Thus, since the height of the forming groove 31 is adapted to the forming part 30, and it gradually increases from the initial end to the end end, in the initial stage of thread rolling, the shorter forming groove 31 can perform preliminary prismatic surface processing on the part below the thread. As the second thread rolling plate 20 moves, the processing length of the prismatic surface gradually increases, and the preset prismatic surface is gradually formed.

[0056] Preferably, in one embodiment of the present invention, the upper ends of the forming grooves 31 that are far from the initial engagement ends of the first thread rolling plate 10 and the second thread rolling plate 20 are all closed.

[0057] Thus, when the machining process reaches the later part and the screw moves to the other end, the length of the forming groove 31 completely covers the lower part of the screw. At this time, the screw can be machined in an arc shape along its axial direction by means of the bending structure of the lower part of the forming groove 31.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0059] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A self-tapping screw feeder for processing metal self-tapping screws that penetrate thin steel plates and aluminum alloy plates, characterized in that, include: A first thread rolling plate, the first thread rolling plate being adapted to be fixed on a machine tool; The second thread rolling plate is disposed opposite to the first thread rolling plate and defines a receiving gap between the second thread rolling plate and the first thread rolling plate for accommodating the screw to be processed. The second thread rolling plate is driven by the machine tool to reciprocate along its own length direction to cooperate with the first thread rolling plate to process threads on the upper part of the screw to be processed. Two forming parts are respectively disposed on the opposite surfaces of the first thread rolling plate and the second thread rolling plate. The two forming parts are mirror images of each other and are located in the lower part of the first thread rolling plate and the second thread rolling plate. The height of the forming parts gradually increases from the initial engagement end of the first thread rolling plate and the second thread rolling plate to the other end, so as to process a prismatic arc surface in the lower part of the screw to be processed, and to process a rounded tip below the prismatic arc surface.

2. The self-tapping die for processing metal self-tapping screws penetrating thin steel plates and aluminum alloy plates according to claim 1, characterized in that, The first thread rolling plate and the second thread rolling plate are both provided with thread rolling parts for processing threads on their opposite surfaces, and the two thread rolling parts are arranged in a mirror image.

3. The self-tapping screw chuck for processing metal self-tapping screws that penetrate thin steel plates and aluminum alloy plates according to claim 1, characterized in that, The surfaces of the two molding parts are provided with a plurality of molding grooves, which are distributed at intervals along the length of the molding part, and the height of the plurality of molding grooves is adapted to the height of the molding part.

4. A self-tapping screw feeder for processing metal self-tapping screws that penetrate thin steel plates and aluminum alloy plates according to claim 3, characterized in that, An arc-shaped transition surface is formed between two adjacent molding grooves.

5. A self-tapping screw feeder for processing metal self-tapping screws that penetrate thin steel plates and aluminum alloy plates according to claim 3, characterized in that, The portion of the lower end of the forming groove that is away from the initial engagement end of the first and second thread rolling plates is bent into an arc shape toward the screw to be processed, so as to make the end of the screw to be processed into a rounded tip.

6. A self-tapping screw feeder for processing metal self-tapping screws penetrating thin steel plates and aluminum alloy plates according to claim 3, characterized in that, The upper ends of the forming grooves near the initial engagement ends of the first and second thread rolling plates are all open.

7. A self-tapping screw feeder for processing metal self-tapping screws that penetrate thin steel plates and aluminum alloy plates according to claim 3, characterized in that, The upper ends of the forming grooves that are far from the initial engagement ends of the first and second thread rolling plates are all closed.

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