Punching machine

Abstract

The utility model discloses a punching machine, and relates to the technical field of riveting, the punching machine is used for processing a riveting sheet, the riveting sheet is provided with a threading hole, the punching machine comprises a movable punching machine and a fixed punching machine, and the movable punching machine is provided with a punch; a machining station is arranged on the face, facing the puncher pin, of the fixed punching machine and used for containing and limiting the riveting piece. The punch and the sprouting hole are coaxially arranged, and the movable punching machine drives the punch to move towards the sprouting hole, so that the punch is inserted into the sprouting hole and extrudes the sprouting characteristic of the sprouting hole. The product is provided with a hole, the riveting piece is provided with a threaded hole, the threaded hole has a threaded characteristic, the riveting piece is placed on a fixed punching machine to be limited, the hole of the product is sleeved on the outer diameter of the threaded hole, and the product and the threaded hole are coaxially arranged. And the movable punching machine drives the punch to move towards the sprouting hole, so that the punch is inserted into the sprouting hole and extrudes the sprouting feature of the sprouting hole, and the sprouting feature gradually sinks into the product main body as the punch goes deep into the sprouting hole, so that the burrs are forced to be pressed into the material, and the effect of removing the burrs is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of riveting, in particular to a punching machine. Background Art

[0002] In the metalworking industry, riveting is a common method for fastening metal parts together. This typically requires forming a rivet hole in the part to accommodate the rivet. However, burrs often form on the edges of the rivet hole after riveting. These burrs not only affect the product's appearance but can also pose a risk to the component's functionality and safety. Therefore, burr removal is a necessary post-riveting process.

[0003] Traditional riveting and burr processing are usually carried out separately, which not only increases production costs, leads to inconsistent product quality, increases the difficulty of quality control, but also prolongs the production cycle and reduces production efficiency. Utility Model Content

[0004] The main purpose of the utility model is to provide a punching machine, aiming to solve the problem that the prior art cannot simultaneously rivet and remove burrs.

[0005] To achieve the above-mentioned purpose, the punching machine proposed in the present invention is used for processing a riveted sheet, wherein the riveted sheet is provided with a sprouting hole having a sprouting feature, and the punching machine comprises:

[0006] A dynamic punch press having a punch;

[0007] A fixed punch press, wherein a groove is provided on a side of the fixed punch press facing the punch, and the groove is used to accommodate and limit the riveting sheet;

[0008] When the punch is coaxially arranged with the sprouting hole, the dynamic punching machine drives the punch to move toward the sprouting hole, so that the punch extends into the sprouting hole and squeezes the sprouting feature of the sprouting hole.

[0009] In one embodiment, the punch has a protrusion, and the protrusion has an extrusion section and a positioning section. From the dynamic punch to the fixed punch, the extrusion section and the positioning section are arranged in sequence, and the protrusion is coaxially arranged with the sprouting hole; when the dynamic punch moves toward the fixed punch, the positioning section gradually penetrates into the sprouting hole, and when the positioning section completely penetrates into the sprouting hole, the extrusion section gradually squeezes the sprouting feature of the sprouting hole so that the burr of the sprouting feature is pressed into the product body.

[0010] In one embodiment, a contoured surface is formed on the periphery of the extrusion section, the cross section of the contoured surface is circular, and the longitudinal section of the contoured surface is a concave arc shape.

[0011] In one embodiment, the included angle between the contoured surface and the horizontal plane is defined as α, and 10°≤α≤15°.

[0012] In one embodiment, the diameter of the cross section of the positioning segment is smaller than the diameter of the sprouting hole.

[0013] In one embodiment, the axial length of the protrusion is greater than or equal to the depth of the sprouting hole.

[0014] In one embodiment, the diameter of the cross section of the extrusion section is larger than the diameter of the sprouting hole.

[0015] In one embodiment, the fixed punch press has a limit member, which is coaxially arranged with the sprouting hole; when the movable punch press does not move toward the fixed punch press, the limit member is inserted into the sprouting hole; when the movable punch press and the fixed punch press move, the punch abuts against the limit member to keep the limit member away from the sprouting hole.

[0016] In one embodiment, the fixed punch press further includes an elastic member, and the punch, the limit member and the elastic member are arranged in sequence in the direction from the movable punch press to the fixed punch press; when the punch moves toward the budding hole, the elastic member stores elastic potential energy; when the punch moves away from the budding hole, the elastic member releases elastic potential energy.

[0017] In one embodiment, the elastic member is a spring.

[0018] In the technical solution of this utility model, the product has a hole, the rivet plate has a sprouting hole, and the sprouting hole has a sprouting feature. The rivet plate is placed in a fixed punch position, and the product hole is sleeved on the outer diameter of the sprouting hole, and the two are arranged coaxially. The dynamic punch drives the punch toward the sprouting hole, so that the punch is inserted into the sprouting hole and squeezes the sprouting feature of the sprouting hole. As the punch penetrates the sprouting hole, the sprouting feature gradually sinks into the main body of the product, thereby forcing the burr into the material, achieving the effect of deburring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 the structures shown in these drawings without paying any creative work.

[0020] Figure 1 A schematic structural diagram of an embodiment of a punching machine provided by the present utility model;

[0021] Figure 2 for Figure 1A partial enlarged cross-sectional view at point A;

[0022] Description of Figure Numbers:

[0023] 10000, stamping machine; 1, dynamic punch; 11, punch; 111, protrusion; 1111, extrusion section; 111a, contour surface; 1112, positioning section; 2, fixed punch; 21, limit member; 22, elastic member.

[0024] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0026] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] In the field of metal processing, riveting is a commonly used method for connecting metal parts. The traditional riveting process involves forming a bud hole on the part to accommodate the rivet, and deforming the rivet through pressure to fix two or more parts. However, during the riveting process, burrs often appear on the edge of the bud hole. These burrs not only affect the appearance quality of the product, but may also pose a hidden danger to the functionality and safety of the part. In the existing technology, riveting and burr treatment are usually carried out separately, which leads to low production efficiency. The separate processes increase the difficulty of quality control, and product quality may fluctuate due to inconsistent operations.

[0029] The utility model provides a punching machine.

[0030] In one embodiment of the present invention, please refer to Figure 1 and Figure 2 The punching machine 10000 is used to process a rivet sheet, and the rivet sheet is provided with a budding hole having a budding feature. The punching machine 10000 includes: a dynamic punching machine 1, the dynamic punching machine 1 has a punch 11; a fixed punching machine 2, the fixed punching machine 2 has a groove on a side facing the punch 11, and the groove is used to accommodate the limiting rivet sheet;

[0031] When the punch 11 is coaxially arranged with the sprouting hole, the dynamic punching machine 1 drives the punch 11 to move toward the sprouting hole, so that the punch 11 extends into the sprouting hole and squeezes the sprouting feature of the sprouting hole.

[0032] In this embodiment, the dynamic punching machine 1 is equipped with a punch 11, and the fixed punching machine 2 is equipped with a positioning pin for assisting in positioning the sprouting hole. The punch 11 is coaxially arranged with the positioning pin, and the sprouting hole on the rivet sheet is sleeved on the positioning pin, and the sprouting hole is matched with the positioning pin in size so that the sprouting hole is not easy to shake under the limit of the positioning pin. At this point, the coaxial arrangement of the punch 11 and the sprouting hole is realized.

[0033] The one side of the fixed punch 2 facing the punch 11 is provided with a groove, and this groove is used to accommodate and limit the riveting sheet. The riveting sheet is placed in this groove, guarantees that its budding hole and the punch 11 can be aligned.

[0034] After the rivet sheet is placed in the slot of the fixed punch 2 and positioned by the positioning pin, the dynamic punch 1 drives the punch 11 toward the bud hole. The punch 11 extends into the bud hole and squeezes the bud feature of the bud hole. This process uses the mechanical force of the punch 11 to squeeze the edge of the bud hole to achieve the processing purpose.

[0035] The product has a hole, and the rivet sheet has a sprouting hole, and the sprouting hole has a sprouting feature. The rivet sheet is placed on a fixed punch 2 to limit the position, and the product hole is set to the outer diameter of the sprouting hole, and the two are coaxially arranged. The dynamic punch 1 drives the punch 11 toward the sprouting hole, so that the punch 11 is inserted into the sprouting hole and squeezes the sprouting feature of the sprouting hole. As the punch 11 penetrates into the sprouting hole, the sprouting feature gradually sinks into the main body of the product, thereby forcing the burr into the material, achieving the effect of deburring.

[0036] In one embodiment of the present invention, please refer to Figure 1 and Figure 2 The punch 11 has a protruding portion 111, and the protruding portion 111 has an extruding section 1111 and a positioning section 1112. From the dynamic punch 1 to the fixed punch 2, the extruding section 1111 and the positioning section 1112 are arranged in sequence, and the protruding portion 111 is coaxially arranged with the budding hole; when the dynamic punch 1 moves toward the fixed punch 2, the positioning section 1112 gradually penetrates into the budding hole, and when the positioning section 1112 completely penetrates into the budding hole, the extruding section 1111 gradually squeezes the budding feature of the budding hole so that the burr of the budding feature is pressed into the product body.

[0037] In this embodiment, the punch 11 is designed with a protrusion 111, which is divided into two main parts: a pressing section 1111 and a positioning section 1112. These two parts are arranged in sequence from the movable punch 1 to the fixed punch 2. The protrusion 111 is coaxial with the bud hole, ensuring that the punch 11 can be accurately aligned and inserted into the bud hole.

[0038] The depth design of the positioning section 1112 ensures that it can fully penetrate into the sprouting hole, thereby providing a stable foundation for the extrusion operation of the extrusion section 1111.

[0039] First, the rivet sheet is placed in the slot of the fixed punch 2. The coaxial arrangement of the bud hole and the positioning pin ensures that the rivet sheet is stable and properly aligned. The dynamic punch 1 begins to drive the punch 11 toward the fixed punch 2. The positioning section 1112 of the punch 11 first contacts the bud hole and gradually penetrates into the hole, simultaneously displacing the positioning pin originally set in the bud hole. Once the positioning section 1112 is fully inserted into the bud hole, it ensures that the punch 11 is correctly positioned, preparing for the extrusion section 1111 to perform the extrusion operation. As the dynamic punch 1 continues to move, the extrusion section 1111 begins to act on the budding feature of the bud hole. The diameter of the extrusion section 1111 is larger than the diameter of the bud hole, so it applies pressure to the inner wall of the bud hole. The pressure of the extrusion section 1111 forces the burr material at the edge of the bud hole to deform inward and press into the main material of the product, removing the burr. When the extrusion operation is complete, the dynamic punch 1 stops moving, and the punch 11 withdraws from the bud hole, completing the riveting and burr removal process.

[0040] This embodiment realizes the functions of riveting and burr pressing simultaneously on a single punching machine 10000 by designing the punch 11 as a protrusion 111 with an extrusion section 1111 and a positioning section 1112, thereby reducing equipment requirements and processing steps.

[0041] In one embodiment of the present invention, please refer to Figure 1 and Figure 2 A contoured surface 111a is formed on the periphery of the extrusion section 1111. The cross section of the contoured surface 111a is circular, and the longitudinal section of the contoured surface 111a is a concave arc shape.

[0042] In this embodiment, the periphery of the extrusion section 1111 is designed with a contoured surface 111a. This design allows the extrusion section 1111 to more closely conform to the inner wall of the sprouting hole when inserted into the sprouting hole, thereby achieving a more uniform extrusion effect. The longitudinal cross-section of the contoured surface 111a is designed to be a concave arc shape. This shape can more effectively squeeze the sprouting characteristics of the sprouting hole during the extrusion process, making it easier to press the burr into the main body of the product.

[0043] When the positioning section 1112 completely enters the sprouting hole, the squeezing section 1111 starts to work, and its concave arc-shaped longitudinal section starts to exert pressure on the edge of the sprouting hole.

[0044] As the dynamic punch 1 moves further, the arc shape of the contoured surface 111 a helps to push the material at the edge of the budding hole inward, and the burrs are pressed into the main body of the product, thereby achieving burr removal.

[0045] In one embodiment of the present invention, please refer to Figure 1 and Figure 2 , the included angle between the contoured surface 111a and the horizontal plane is defined as α, 10°≤α≤15°.

[0046] In this embodiment, the angle α is precisely controlled within a range of 10° to 15°, which helps achieve optimal material deformation during the extrusion process. This angle is neither too large to cause excessive extrusion and damage to the material, nor too small to affect the burr's effectiveness. A suitable angle helps reduce the formation of new burrs during the extrusion process while more effectively pressing existing burrs into the product body.

[0047] In one embodiment of the present invention, please refer to Figure 1 and Figure 2 The diameter of the cross section of the positioning section 1112 is smaller than the aperture of the budding hole.

[0048] In this embodiment, the diameter of positioning segment 1112 is smaller than the diameter of the budding hole, allowing positioning segment 1112 to be smoothly inserted into the budding hole and precisely positioned within the hole, ensuring that punch 11 and the budding hole remain coaxially aligned. During insertion, the smaller diameter of positioning segment 1112 reduces mechanical impact and damage to the edge of the budding hole, helping to maintain the integrity of the material. The precise insertion of positioning segment 1112 provides a stable foundation for the subsequent operation of extrusion segment 1111, ensuring that extrusion segment 1111 can effectively act on the budding feature of the budding hole.

[0049] In one embodiment of the present invention, please refer to Figure 1 and Figure 2 The length of the protrusion 111 in the axial direction is greater than or equal to the depth of the sprouting hole.

[0050] First, according to the standard depth of the bud hole, determine the minimum length of the protrusion 111. This length is at least equal to the depth of the bud hole to ensure that the punch 11 can be fully inserted and contact the bottom of the hole.

[0051] In this embodiment, the riveting sheet is placed on the processing station of the fixed punch press 2 and is fixed by a limiting member 21 .

[0052] The dynamic punch press 1 is activated, driving the punch 11 toward the budding hole. The positioning section 1112 first contacts the budding hole and gradually penetrates deeper until it is fully inserted into the hole. As the positioning section 1112 penetrates deeper, the length of the protrusion 111 ensures that the positioning needle can be completely pushed out of the budding hole, and the extrusion section 1111 can contact the bottom of the budding hole immediately after the positioning section 1112.

[0053] In one embodiment of the present invention, please refer to Figure 1 and Figure 2 The diameter of the cross section of the extrusion section 1111 is larger than the aperture of the budding hole.

[0054] The extrusion section 1111 is located behind the positioning section 1112, and its cross-sectional diameter is larger than the aperture of the sprouting hole, so that when the dynamic punching machine 1 drives the punch 11 to move, the extrusion section 1111 can effectively squeeze the edge of the sprouting hole.

[0055] In this embodiment, after the positioning section 1112 is fully inserted into place, the extrusion section 1111 begins to enter the budding hole. Since the diameter of the extrusion section 1111 is larger than the diameter of the budding hole, it applies radial pressure to the material at the edge of the hole.

[0056] In one embodiment of the present invention, please refer to Figure 1 and Figure 2The fixed punch press 2 has a limit member 21, which is coaxially arranged with the sprouting hole; when the movable punch press 1 does not move toward the fixed punch press 2, the limit member 21 is inserted into the sprouting hole; when the movable punch press 1 and the fixed punch press 2 move, the punch 11 abuts against the limit member 21 to keep the limit member 21 away from the sprouting hole.

[0057] The stopper 21 is designed to be coaxially inserted with the bud hole, and its diameter is slightly smaller than or equal to the diameter of the bud hole, ensuring that it can adapt to bud holes of different sizes. The stopper 21 can be a positioning pin or a positioning column.

[0058] In this embodiment, before the operation begins, when the dynamic punch press 1 is not started, the limiter 21 is inserted into the sprouting hole to stabilize the riveting sheet and pre-position it. The limiter 21 is coaxially arranged with the sprouting hole to ensure that when the punch 11 is inserted into the sprouting hole, it can be inserted along the correct axis, thereby improving the processing accuracy. When the dynamic punch press 1 starts to move toward the fixed punch press 2, the punch 11 first contacts the limiter 21, and the positioning section 1112 of the punch 11 abuts against the limiter 21. As the dynamic punch press 1 continues to move, the punch 11 pushes the limiter 21, causing it to gradually move away from the sprouting hole, making room for the extrusion section 1111 of the punch 11 to further insert and extrusion.

[0059] During the entire processing process, the presence of the limiting member 21 ensures the stability and accurate positioning of the riveting sheet and prevents the punch 11 from deflecting during the insertion process.

[0060] In one embodiment of the present invention, please refer to Figure 1 and Figure 2 The fixed punch press 2 also includes an elastic member 22. In the direction from the driven punch press 1 to the fixed punch press 2, the punch 11, the limit member 21 and the elastic member 22 are arranged in sequence; when the punch 11 moves toward the budding hole, the elastic member 22 stores elastic potential energy; when the punch 11 moves away from the budding hole, the elastic member 22 releases the elastic potential energy.

[0061] In this embodiment, the elastic member 22 is a rubber spring or an elastic washer. When the punch 11 moves toward the budding hole, the elastic member 22 is compressed, storing elastic potential energy. This process provides additional propulsion for the punch 11, ensuring that the punch 11 can be smoothly and stably inserted into the budding hole. When the punch 11 begins to move away from the budding hole, the elastic member 22 releases the previously stored elastic potential energy, helping the punch 11 to quickly return to its initial position in preparation for the next stamping cycle.

[0062] Start the dynamic punch press 1, and the punch 11 begins to move toward the fixed punch press 2. The punch 11 first contacts the limiter 21, and the limiter 21 compresses the elastic part 22 so that the elastic part 22 stores energy. As the punch 11 continues to move forward, the limiter 21 is pushed out of the sprouting hole, providing space for the punch 11 to enter the sprouting hole. The extrusion section 1111 of the punch 11 is inserted into the sprouting hole to perform riveting and burr pressing operations. After the operation is completed, the dynamic punch press 1 retreats, and the elastic part 22 releases energy to drive the limiter 21 to punch upward. With the help of the energy released by the elastic part 22, the limiter 21 quickly returns to its original position and is inserted into the sprouting hole, ready for the next riveting.

[0063] The use of the elastic member 22 significantly increases the speed of the punch 11 and the overall processing efficiency, while reducing the reliance on external power sources. It also provides a buffering mechanism to help reduce the vibration and impact of the punch 11 during high-speed movement, thereby improving the stability of the processing process.

[0064] In one embodiment of the present invention, please refer to Figure 1 and Figure 2 , the elastic member 22 is a spring.

[0065] One end of the spring is fixed to the lug at the end of the limiting member 21 away from the upper punch, and the other end of the spring is fixed to the lug of the fixed punch 2.

[0066] In this embodiment, when the dynamic punch 1 moves, the punch 11 compresses the spring, which stores energy. When the dynamic punch 1 retracts, the spring releases energy, pushing the stopper 21 back into position. The spring provides a buffering and shock-absorbing function, absorbing the impact and vibration during the movement of the punch 11.

[0067] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A punching machine for processing a riveted sheet, wherein the riveted sheet is provided with a budding hole having a budding feature, characterized in that: The punching machine comprises: A dynamic punch press having a punch; A fixed punch press, wherein a groove is provided on a side of the fixed punch press facing the punch, and the groove is used to accommodate and limit the riveting sheet; When the punch is coaxially arranged with the sprouting hole, the dynamic punching machine drives the punch to move toward the sprouting hole, so that the punch extends into the sprouting hole and squeezes the sprouting feature of the sprouting hole.

2. The punching machine according to claim 1, wherein The punch has a protrusion, and the protrusion has an extrusion section and a positioning section. From the dynamic punch to the fixed punch, the extrusion section and the positioning section are arranged in sequence, and the protrusion is coaxially arranged with the sprouting hole; when the dynamic punch moves toward the fixed punch, the positioning section gradually penetrates into the sprouting hole, and when the positioning section completely penetrates into the sprouting hole, the extrusion section gradually squeezes the sprouting feature of the sprouting hole so that the burr of the sprouting feature is pressed into the product body.

3. The punching machine according to claim 2, wherein: A profiling surface is formed on the periphery of the extrusion section. The cross section of the profiling surface is circular, and the longitudinal section of the profiling surface is a concave arc shape.

4. The punching machine according to claim 3, wherein: The included angle between the profiling surface and the horizontal plane is defined as α, 10°≤α≤15°.

5. The punching machine according to claim 2, wherein: The diameter of the cross section of the positioning section is smaller than the aperture of the sprouting hole.

6. The punching machine according to claim 5, wherein: The length of the protrusion in the axial direction is greater than or equal to the depth of the sprouting hole.

7. The punching machine according to claim 6, wherein: The diameter of the cross section of the extrusion section is larger than the aperture of the budding hole.

8. The punching machine according to claim 1, wherein: The fixed punch has a limiter, which is coaxially arranged with the sprouting hole; when the movable punch does not move toward the fixed punch, the limiter is inserted into the sprouting hole; When the movable punch press and the fixed punch press move, the punch head abuts against the limiting member to keep the limiting member away from the sprouting hole.

9. The punching machine according to claim 8, wherein The fixed punch press also includes an elastic member. In the direction from the movable punch press to the fixed punch press, the punch, the limit member and the elastic member are arranged in sequence; when the punch moves toward the budding hole, the elastic member stores elastic potential energy; when the punch moves away from the budding hole, the elastic member releases elastic potential energy.

10. The punching machine according to claim 9, wherein The elastic member is a spring.

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