Multifunctional drill jig for air spring mounting seat and sleeper beam and riveting method

Abstract

The invention discloses a multifunctional drill jig for an air spring mounting seat and a sleeper beam and a riveting method, and relates to the technical field of rail transit. The riveting method comprises the steps that the air spring mounting seat is placed near the mounting position of the sleeper beam; the air spring mounting seat is sleeved with a multifunctional mounting drill plate, the multifunctional mounting drill plate is adjusted according to the mounting position, and the air spring mounting seat is made to be located at the mounting position; the multifunctional installation drill plate is fixed, so that the air spring installation base is fixed at the installation position; drilling equipment is used for sequentially penetrating through the air spring mounting seat and the sleeper beam; and riveting equipment is used, rivets are sequentially inserted into the holes penetrating through the air spring mounting base and the sleeper beam, and the air spring mounting base and the sleeper beam are riveted. According to the riveting method for the air spring mounting base and the sleeper beam, accurate positioning and efficient drilling of the air spring mounting base and the sleeper beam are achieved through the synergistic effect of the multifunctional mounting drill plate and the drilling equipment, and the problems that in the prior art, due to manual drilling, the drilling precision is not stable, and the efficiency is low are effectively solved.

Description

Technical Field

[0001] The present application relates to the field of rail transit technology, and in particular to a multifunctional drilling jig and riveting method for an empty spring mounting seat and a bolster. Background Art

[0002] In modern industrial manufacturing, especially in the field of rail transportation, the vehicle chassis structure needs to be connected by riveting technology to achieve the connection of various components. For example, the connection between the chassis bolster and the empty spring mounting seat of the maglev train is an important link in the vehicle structure. Riveting technology is widely used due to its reliable connection strength and good sealing. During the riveting process, the components need to be accurately positioned and fixed, and then the holes and riveting operations are carried out. This process has strict requirements on the accuracy and efficiency of the process to ensure the quality and performance of the final product.

[0003] In the existing riveting process, the connection between the chassis bolster and the empty spring mounting seat usually needs to be achieved through manual drilling. Since the thickness of the bolster is 8mm and the thickness of the empty spring mounting seat is 17mm, there are certain technical challenges in the drilling process of this combined stack. Manual drilling is not only inefficient, but also easily affected by the skill level of the operator, resulting in unstable hole making accuracy. In addition, the aluminum chips generated during the hole making process are difficult to clean, which may have an adverse effect on the subsequent riveting quality and equipment maintenance. Summary of the invention

[0004] The purpose of the present application is to provide a riveting method for an empty spring mounting seat and a bolster, which utilizes the synergistic effect of a multifunctional mounting drilling template and a drilling device to achieve precise positioning and efficient hole making of the empty spring mounting seat and the bolster, and effectively solves the problem of unstable hole making accuracy and low efficiency caused by manual drilling in the prior art. Another purpose of the present application is to provide a multifunctional drilling template for an empty spring mounting seat and a bolster.

[0005] To achieve the above-mentioned purpose, the present application provides a riveting method for an empty spring mounting seat and a bolster, comprising:

[0006] Place the empty spring mounting base near the mounting position of the bolster;

[0007] Sleeve the multifunctional installation drilling template on the empty spring installation seat, and adjust the multifunctional installation drilling template according to the installation position so that the empty spring installation seat is in the installation position;

[0008] Fixing the multifunctional installation drilling template to fix the empty spring mounting seat at the installation position;

[0009] Use a drilling device to sequentially penetrate the empty spring mounting seat and the bolster;

[0010] Using riveting equipment, rivets are inserted into the holes penetrating the empty spring mounting seat and the bolster in sequence to rivet the empty spring mounting seat and the bolster.

[0011] In some embodiments, the step of fixing the multifunctional mounting drill template comprises:

[0012] The multifunctional installation drilling template is fixed by combining an expansion sleeve fixing device and a C-type calliper device, wherein the C-type calliper device is arranged at the edge of the bolster, and the expansion sleeve fixing device is arranged at a position away from the edge of the bolster.

[0013] In some embodiments, the steps of using the expansion sleeve fixing device include:

[0014] Putting the expansion sleeve of the expansion sleeve fixing device into the lightening hole of the bolster, so that the expansion sleeve is tightened in the lightening hole, providing a fixed force point for the expansion sleeve fixing device;

[0015] The first pressing head and the second pressing head of the expansion sleeve fixing device are adjusted so that the first pressing head presses the multifunctional installation drilling template and the second pressing head presses the pillow beam.

[0016] In some embodiments, the drilling device is an ADU drill, and the use steps include:

[0017] placing the self-expanding drilling template into the guide hole of the multifunctional installation drilling template;

[0018] Inserting an ADU drill into the self-expanding drill template;

[0019] The ADU drill is controlled to make holes. During the hole making process, the drill bit speed and feed rate of the ADU drill are automatically controlled by the ADU drill, and the drill cuttings generated are recovered by the ADU drill.

[0020] In some embodiments, when using the riveting equipment, the riveting is performed in a symmetrical and staggered order from the inside to the outside.

[0021] The present application also provides a multifunctional drilling template for an empty spring mounting seat and a pillow block, which is suitable for the above-mentioned riveting method for an empty spring mounting seat and a pillow block, and includes a multifunctional installation drilling template, wherein the multifunctional installation drilling template is provided with a positioning structure, wherein the positioning structure is used to nest with the empty spring mounting seat, and the multifunctional installation drilling template is also provided with a guide hole, wherein the guide hole is used to provide guidance for drilling equipment and riveting equipment.

[0022] In some embodiments, the positioning structure includes a positioning hole, and the positioning hole is used for inserting the protruding structure of the empty spring mounting seat.

[0023] In some embodiments, the protrusion structure includes a first protrusion located in the middle area of ​​the empty spring mounting seat and a second protrusion located in the four corner areas of the empty spring mounting seat, the number of the first protrusions is two, and the number of the second protrusions is four.

[0024] In some embodiments, a C-shaped calliper device and an expansion sleeve fixing device are also included, wherein an expansion sleeve is provided in the middle of the expansion sleeve fixing device, and a first pressure head and a second pressure head are provided at both ends.

[0025] In some embodiments, the expansion sleeve includes a first body and a second body, the first body is provided with a conical hole, the second body is provided with a conical surface, the first body is sleeved on the second body, and the first body is expanded outward under the action of the second body by adjusting the axial positions of the first body and the second body.

[0026] Compared with the above-mentioned background technology, the riveting method for the empty spring mounting seat and the pillow beam provided in the present application mainly includes: S1. Placing the empty spring mounting seat near the installation position of the pillow beam; S2. Putting the multifunctional installation drill template on the empty spring mounting seat, and adjusting the multifunctional installation drill template according to the installation position to make the empty spring mounting seat in the installation position; S3. Fixing the multifunctional installation drill template to fix the empty spring mounting seat in the installation position; S4. Using drilling equipment to penetrate the empty spring mounting seat and the pillow beam in sequence; S5. Using riveting equipment, inserting rivets into the holes penetrating the empty spring mounting seat and the pillow beam in sequence to rivet the empty spring mounting seat and the pillow beam.

[0027] In the traditional riveting process, the connection between the empty spring mounting seat and the bolster usually relies on manual drilling. This method has many defects: first, it is difficult to ensure the positioning accuracy of each time by manual operation, which leads to the position of the empty spring mounting seat on the bolster being easily deviated, thus affecting the accuracy of hole making; second, the efficiency of manual drilling is relatively low, which is difficult to meet the needs of large-scale production, and requires a high level of skill for the operator, increasing labor costs and operating difficulty.

[0028] In response to these defects, the present application provides an innovative riveting method. First, the empty spring mounting seat is placed near the installation position of the bolster to lay the foundation for subsequent precise positioning and fixation. Then, the multifunctional installation drilling template is placed on the empty spring mounting seat. The design of this template is crucial. It can be flexibly adjusted according to the installation position to ensure that the empty spring mounting seat is accurately in the predetermined installation position. This adjustment function greatly improves the positioning accuracy and reduces the error caused by manual visual inspection or manual adjustment.

[0029] Next, fix the multifunctional installation drilling template to stabilize the empty spring mounting seat in the installation position. This step further enhances the stability of the empty spring mounting seat through the fixing effect of the template, preventing displacement or dislocation during the subsequent drilling and riveting process, thereby ensuring the smooth progress of the entire riveting process.

[0030] The most critical step is to use drilling equipment to make holes. Under the guidance and positioning of the multifunctional installation drilling template, the drilling equipment can accurately penetrate the empty spring mounting seat and the pillow beam in sequence to make holes that meet the riveting requirements. Due to the precise positioning and fixing of the template, the drilling equipment's hole making accuracy has been significantly improved, avoiding problems such as hole position deviation and inconsistent hole diameter that may occur during manual drilling, and ensuring the quality and consistency of the riveting holes.

[0031] Finally, use the riveting equipment to insert the rivets into the holes one by one to complete the riveting.

[0032] In combination with the above structure and process description, it can be seen that the riveting method for the empty spring mounting seat and the pillow block has at least the following beneficial effects: the riveting method for the empty spring mounting seat and the pillow block utilizes the synergistic effect of the multifunctional mounting drill template and the drilling equipment to achieve precise positioning and efficient hole making of the empty spring mounting seat and the pillow block, effectively solving the problems of unstable hole making accuracy and low efficiency caused by manual drilling in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0034] Figure 1 A flow chart of a riveting method for an empty spring mounting seat and a bolster provided in an embodiment of the present application;

[0035] Figure 2 Schematic diagram of the riveting method for the empty spring mounting seat and the bolster provided in the embodiment of the present application Figure 1 ;

[0036] Figure 3 Schematic diagram of the riveting method for the empty spring mounting seat and the bolster provided in the embodiment of the present application Figure 2 ;

[0037] Figure 4 Schematic diagram of the riveting method for the empty spring mounting seat and the bolster provided in the embodiment of the present application Figure 3 ;

[0038] Figure 5 Schematic diagram of the riveting method for the empty spring mounting seat and the bolster provided in the embodiment of the present application Figure 4 ;

[0039] Figure 6 Schematic diagram of the riveting method for the empty spring mounting seat and the bolster provided in the embodiment of the present application Figure 5 ;

[0040] Figure 7 A riveting sequence diagram provided for an embodiment of the present application;

[0041] Figure 8 A schematic diagram of an expansion sleeve fixing device provided in an embodiment of the present application;

[0042] Fig. 9 A schematic diagram of a multifunctional installation drilling template provided in an embodiment of the present application;

[0043] Fig.10 A schematic diagram of a first subject provided in an embodiment of the present application;

[0044] Fig.11 A schematic diagram of a second body provided in an embodiment of the present application;

[0045] Fig.12 A structural diagram of an empty spring mounting seat and a bolster provided in an embodiment of the present application;

[0046] Fig.13 A position diagram of the empty spring mounting seat and the bolster provided in an embodiment of the present application.

[0047] in:

[0048] Empty spring mounting seat 1, first protrusion 11, second protrusion 12, pillow beam 2, multifunctional mounting drilling template 3, drilling equipment 4, self-expanding drilling template 41, ADU drill 42, rivet 5, expansion sleeve fixing device 6, expansion sleeve 61, first pressure head 62, second pressure head 63, C-type callan device 7, guide hole 31, positioning hole 32. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0050] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0051] Please refer to Figures 1 to 6 ,in, Figure 1 A flow chart of a riveting method for an empty spring mounting seat and a bolster provided in an embodiment of the present application, Figure 2 Schematic diagram of the riveting method for the empty spring mounting seat and the bolster provided in the embodiment of the present application Figure 1 , Figure 3 Schematic diagram of the riveting method for the empty spring mounting seat and the bolster provided in the embodiment of the present application Figure 2 , Figure 4 Schematic diagram of the riveting method for the empty spring mounting seat and the bolster provided in the embodiment of the present application Figure 3 , Figure 5 Schematic diagram of the riveting method for the empty spring mounting seat and the bolster provided in the embodiment of the present application Figure 4 , Figure 6 Schematic diagram of the riveting method for the empty spring mounting seat and the bolster provided in the embodiment of the present application Figure 5 .

[0052] In the first specific embodiment, the riveting method for the empty spring mounting seat 1 and the pillow beam 2 provided in the implementation scheme of the present application mainly includes: S1, placing the empty spring mounting seat 1 near the installation position of the pillow beam 2; S2, putting the multifunctional installation drilling template 3 on the empty spring mounting seat 1, and adjusting the multifunctional installation drilling template 3 according to the installation position to make the empty spring mounting seat 1 in the installation position; S3, fixing the multifunctional installation drilling template 3 to fix the empty spring mounting seat 1 in the installation position; S4, using the drilling equipment 4 to penetrate the empty spring mounting seat 1 and the pillow beam 2 in sequence; S5, using the riveting equipment, inserting the rivet 5 into the hole penetrating the empty spring mounting seat 1 and the pillow beam 2 in sequence, and riveting the empty spring mounting seat 1 and the pillow beam 2.

[0053] In the traditional riveting process, the connection between the empty spring mounting seat 1 and the bolster 2 usually relies on manual drilling. This method has many defects: first, it is difficult to ensure the positioning accuracy each time due to manual operation, which leads to the position of the empty spring mounting seat 1 on the bolster 2 being easily deviated, thus affecting the accuracy of hole making; second, the efficiency of manual drilling is relatively low, which is difficult to meet the needs of large-scale production, and requires a high level of skill for the operator, increasing the labor cost and difficulty of operation.

[0054] In response to these defects, the present application provides an innovative riveting method. First, the empty spring mounting seat 1 is placed near the installation position of the pillow beam 2 to lay the foundation for subsequent precise positioning and fixation. Then, the multifunctional installation drill template 3 is placed on the empty spring mounting seat 1. The design of this template is crucial. It can be flexibly adjusted according to the installation position. The installation position is determined according to the measured dimensions of the installation requirements to ensure that the empty spring mounting seat 1 is accurately in the predetermined installation position. This adjustment function greatly improves the positioning accuracy and reduces the errors caused by manual visual inspection or manual adjustment.

[0055] Next, the multifunctional installation drilling template 3 is fixed to stably fix the empty spring mounting seat 1 in the installation position. This step further enhances the stability of the empty spring mounting seat 1 through the fixing effect of the template, prevents displacement or misalignment during the subsequent drilling and riveting process, thereby ensuring the smooth progress of the entire riveting process.

[0056] The most critical step is to use the drilling device 4 to make holes. Under the guidance and positioning of the multifunctional installation drilling template 3, the drilling device 4 can accurately penetrate the empty spring mounting seat 1 and the pillow beam 2 in sequence to make holes that meet the riveting requirements. Due to the precise positioning and fixing of the template, the hole making accuracy of the drilling device 4 is significantly improved, avoiding the problems of hole position deviation and hole diameter inconsistency that may occur during manual drilling, and ensuring the quality and consistency of the riveting holes.

[0057] Finally, a pull riveting device is used to insert rivets 5 into the through holes one by one to complete the riveting.

[0058] In combination with the above structure and process description, it can be seen that the riveting method for the empty spring mounting seat 1 and the pillow beam 2 has at least the following beneficial effects: the riveting method for the empty spring mounting seat 1 and the pillow beam 2 utilizes the synergistic effect of the multifunctional mounting drilling template 3 and the drilling equipment 4 to achieve precise positioning and efficient hole making of the empty spring mounting seat 1 and the pillow beam 2, effectively solving the problems of unstable hole making accuracy and low efficiency caused by manual drilling in the prior art.

[0059] In some embodiments, the step of fixing the multifunctional mounting drilling template 3 includes: using an expansion sleeve fixing device 6 and a C-type calliper device 7 to fix the multifunctional mounting drilling template 3, the C-type calliper device 7 is arranged at the edge position of the pillow beam 2, and the expansion sleeve fixing device 6 is arranged at a position away from the edge of the pillow beam 2.

[0060] In this embodiment, in order to ensure the stable fixation of the multifunctional installation drilling template 3 on the bolster 2, a combined fixing method of the expansion sleeve fixing device 6 and the C-type calliper device 7 is adopted.

[0061] The C-type callan device 7 is arranged at the edge of the bolster 2, and its callan structure can effectively press and fix the edge portion of the multifunctional installation drilling template 3. Since the space at the edge is relatively small, the compact design of the C-type callan device 7 enables it to adapt to this environment, and ensures the stability of the template in the edge area by applying pressure. The expansion sleeve fixing device 6 is arranged at a position away from the edge of the bolster 2, where the space is relatively large and it is not convenient to use the C-type callan device 7 for clamping. The expansion sleeve fixing device 6 provides a stable support point for the multifunctional installation drilling template 3 by tightening and fixing it on the bolster 2, and then effectively compresses and fixes the multifunctional installation drilling template 3.

[0062] This combined fixing method makes the multifunctional mounting drilling template 3 more firmly and reliably fixed on the bolster 2, is suitable for fixing requirements at different positions, and improves the stability and reliability of the entire riveting process.

[0063] It should be noted that the method of fixing the multifunctional installation drilling template 3 has high flexibility and adaptability, and does not limit the number of expansion sleeve fixing devices 6 and C-type calliper devices 7 and the combination form between them. According to the actual riveting requirements and the specific structure of the bolster 2, different fixing point layouts can be selected to achieve the best fixing effect. For example, a three-point fixing method can be adopted, that is, two C-type calliper devices 7 are used for compression and fixing at the edge position of the bolster 2, and an expansion sleeve fixing device 6 is used for tensioning and fixing at a position away from the edge, or a C-type calliper device 7 and two expansion sleeve fixing devices 6 are used, which can form a stable triangular support structure to ensure the stable fixation of the multifunctional installation drilling template 3 on the bolster 2. Similarly, a four-corner fixing method can also be adopted, that is, a C-type calliper device 7 or an expansion sleeve fixing device 6 is respectively set at the four corners of the bolster 2, and the appropriate device type is selected according to the specific spatial conditions and fixing requirements of each corner to achieve all-round fixation of the multifunctional installation drilling template 3. This flexible fixing method enables the riveting method to adapt to various riveting scenarios and bolster structures, improving its applicability and practicality.

[0064] Please refer to Figure 8 , Figure 8 A schematic diagram of an expansion sleeve fixing device provided in an embodiment of the present application.

[0065] In some embodiments, the steps of using the expansion sleeve fixing device 6 include: placing the expansion sleeve 61 of the expansion sleeve fixing device 6 into the lightening hole of the pillow beam 2, so that the expansion sleeve 61 is tightened in the lightening hole to provide a fixed force point for the expansion sleeve fixing device 6; adjusting the first pressing head 62 and the second pressing head 63 of the expansion sleeve fixing device 6, so that the first pressing head 62 presses the multifunctional installation drilling template 3, and the second pressing head 63 presses the pillow beam 2.

[0066] In this embodiment, the steps of using the expansion sleeve fixing device 6 are as follows: First, the expansion sleeve 61 of the expansion sleeve fixing device 6 is placed in the lightening hole of the bolster 2. The design of the lightening hole allows the expansion sleeve 61 to smoothly enter and be positioned therein. Next, the expansion sleeve 61 is tightened in the lightening hole by some means (such as rotation or applying pressure, etc.), so that the expansion sleeve 61 fits tightly with the inner wall of the bolster 2, thereby providing a stable fixing force point for the expansion sleeve fixing device 6. With this force point, the expansion sleeve fixing device 6 can be stably installed on the bolster 2. Then, the first pressure head 62 and the second pressure head 63 of the expansion sleeve fixing device 6 are adjusted, and the two pressure heads can be in the form of bolts. By screwing the first pressure head 62 (bolt), it moves toward the direction of the multifunctional installation drilling template 3 until the multifunctional installation drilling template 3 is pressed, ensuring that the template will not shift or vibrate during the riveting process. At the same time, the second pressure head 63 (bolt) is screwed to move toward the direction of the bolster 2, pressing the bolster 2, and further enhancing the connection stability between the expansion sleeve fixing device 6 and the bolster 2. Through such steps, the expansion sleeve fixing device 6 can effectively fix the multifunctional installation drilling template 3 on the bolster 2, providing reliable support for subsequent hole making and riveting operations.

[0067] Please refer to Fig. 9 , Fig. 9 A schematic diagram of a multifunctional mounting drill template provided in an embodiment of the present application.

[0068] In some embodiments, the drilling equipment 4 is an ADU drill 42, and the use steps include: placing the self-expanding drill template 41 into the guide hole 31 of the multifunctional mounting drill template 3; inserting the ADU drill 42 into the self-expanding drill template 41; controlling the ADU drill 42 to make holes, during which the drill speed and feed rate of the ADU drill 42 are automatically controlled by the ADU drill 42, and the drill cuttings generated are recovered by the ADU drill 42.

[0069] In this embodiment, the drilling equipment 4 adopts an ADU drill 42, and the specific steps of its use are as follows: First, accurately place the self-expanding drill template 41 into the guide hole 31 of the multifunctional mounting drill template 3 to ensure accurate guidance of the drilling. Then, insert the ADU drill 42 into the self-expanding drill template 41 to prepare for the hole making operation. During the hole making process, the ADU drill 42 can automatically control the rotation speed and feed rate of the drill bit, and by accurately controlling the elongation of the feed, effectively avoid the drill bit from causing damage to the carbon fiber floor on the lower side of the pillow beam 2 when making holes. At the same time, the ADU drill 42 has a dust suction function, which can recycle the drill cuttings generated while drilling, avoid the drill cuttings remaining in the closed cavity, and keep the riveting area clean. This process not only improves the accuracy and efficiency of hole making, but also ensures the stability and reliability of the riveting quality.

[0070] Please refer to Figure 7 , Figure 7A diagram of the riveting sequence provided in an embodiment of the present application.

[0071] In some embodiments, when using the riveting equipment, the riveting is performed in a symmetrical and staggered order from the inside to the outside.

[0072] In this embodiment, when the riveting operation is performed using a pull riveting device, a specific riveting sequence is adopted, that is, from the inside to the outside, in a symmetrical and staggered manner. This order of arrangement has its unique advantages and considerations. First, starting riveting from the inside can ensure the stability of the riveting process, because the internal riveting points can provide certain support and positioning for subsequent external riveting, avoiding deformation or displacement of the internal structure due to the fixation of the external riveting points during the riveting process. Secondly, the symmetrical and staggered riveting sequence helps to balance the stress generated during the riveting process and prevent structural damage caused by stress concentration. Through this orderly riveting method, the riveting quality can be improved, ensuring that the connection between the empty spring mounting seat and the pillow beam is more firm and reliable, thereby improving the stability and durability of the entire riveted structure.

[0073] Specific as Figure 7 As shown:

[0074] The first step is to rivet the inner ring area of ​​C1 in the order of 1-2-3-4-5;

[0075] The second step is to rivet the inner ring area of ​​C2, and the riveting sequence is 6-7-8-9-10-11-12;

[0076] The third step is to rivet the C3 middle circle area, the riveting order is 13-14-15-16-17-18-19-20;

[0077] Step 4: Rivet the C4 middle circle area in the order of 21-22-23-24;

[0078] Step 5: Rivet the C5 outer ring area, the riveting order is 25-26-27-28.

[0079] In a specific embodiment, the present application also provides a multifunctional drilling template for an empty spring mounting seat 1 and a pillow beam 2, which is suitable for the above-mentioned riveting method for the empty spring mounting seat 1 and the pillow beam 2, including a multifunctional installation drilling template 3, the multifunctional installation drilling template 3 is provided with a positioning structure, the positioning structure is used to nest with the empty spring mounting seat 1, the multifunctional installation drilling template 3 is also provided with a guide hole 31, the guide hole 31 is used to provide guidance for the drilling equipment 4 and the riveting equipment.

[0080] In this embodiment, the present application also provides a multifunctional drilling template, which is specially used for the riveting method of the empty spring mounting seat 1 and the pillow beam 2. The multifunctional drilling template includes a multifunctional installation drilling template 3, and its design takes into account the compatibility and synergy with the riveting method. The multifunctional installation drilling template 3 is provided with a positioning structure, which can be nested with the empty spring mounting seat 1 to ensure the precise positioning of the empty spring mounting seat 1 during the riveting process, prevent it from shifting or tilting, and thus improve the accuracy of riveting. In addition, the multifunctional installation drilling template 3 is also equipped with guide holes 31, which provide precise guidance for the drilling equipment 4 and the riveting equipment. During the hole making and riveting operations, the equipment can be positioned and operated along the guide holes 31 to ensure the accuracy of the hole position and the quality of the riveting, making the entire riveting process more efficient and reliable. Through the design of this multifunctional drilling template, the efficiency and quality of the riveting between the empty spring mounting seat 1 and the pillow beam 2 can be further improved to meet the needs of high-precision riveting.

[0081] In some embodiments, the positioning structure includes a positioning hole 32, and the positioning hole 32 is used for inserting the protruding structure of the empty spring mounting seat 1.

[0082] In this embodiment, the positioning structure includes positioning holes 32, which are provided on the multifunctional installation drilling template 3 and are used to cooperate with the protruding structure of the empty spring mounting seat 1. When the multifunctional installation drilling template 3 is sleeved on the empty spring mounting seat 1, the protruding structure of the empty spring mounting seat 1 can be accurately inserted into the positioning holes 32. This design enables the multifunctional installation drilling template 3 to be accurately positioned on the empty spring mounting seat 1, ensuring the stability and accuracy of the template during the riveting process. Through the cooperation of the positioning holes 32 and the protruding structure, the multifunctional installation drilling template 3 is effectively prevented from moving or rotating on the empty spring mounting seat 1, thereby improving the accuracy of the riveting hole position and the consistency of the riveting quality.

[0083] In some embodiments, the protrusion structure includes a first protrusion 11 located in the middle area of ​​the empty spring mounting seat 1 and a second protrusion 12 located in the four corner areas of the empty spring mounting seat 1. The number of the first protrusions 11 is two, and the number of the second protrusions 12 is four.

[0084] In this embodiment, these protrusions are mainly used for the installation of empty springs, but the multifunctional installation drilling template 3 is provided with positioning holes 32 that match them. When the multifunctional installation drilling template 3 is sleeved on the empty spring mounting seat 1, the positioning holes 32 can cooperate with these protrusions to achieve accurate positioning and stable fixation of the template. This design ensures that during the riveting process, the multifunctional installation drilling template 3 can accurately cover the empty spring mounting seat 1, providing reliable guidance and support for hole making and riveting operations.

[0085] In some embodiments, a C-shaped calliper device 7 and an expansion sleeve fixing device 6 are also included. An expansion sleeve 61 is provided in the middle of the expansion sleeve fixing device 6, and a first pressing head 62 and a second pressing head 63 are provided at both ends.

[0086] In this embodiment, the multifunctional drilling template also includes a C-type calliper device 7 and an expansion sleeve fixing device 6. In the structural design of the expansion sleeve fixing device 6, an expansion sleeve 61 is provided in the middle position, which is a key component for realizing the fixing function, and provides a stable support point by tightening in the lightening hole of the pillow beam 2. A first pressure head 62 and a second pressure head 63 are respectively provided at both ends of the expansion sleeve fixing device 6, and the function of these two pressure heads is to further enhance the fixing effect. The first pressure head 62 and the second pressure head 63 can be adjusted by screwing or other methods to press the multifunctional installation drilling template 3 and the pillow beam 2 to ensure the stable connection between the template and the pillow beam during the riveting process. This design enables the multifunctional drilling template to be more firmly fixed on the pillow beam 2, providing a solid guarantee for hole making and riveting operations.

[0087] Please refer to Fig.10 and Fig.11 , Fig.10 A schematic diagram of a first subject provided in an embodiment of the present application, Fig.11 A schematic diagram of a second body provided in an embodiment of the present application.

[0088] In some embodiments, the expansion sleeve 61 includes a first body and a second body. The first body is provided with a conical hole, the second body is provided with a conical surface, and the first body is sleeved on the second body. By adjusting the axial positions of the first body and the second body, the first body is expanded outward under the action of the second body.

[0089] In this embodiment, the expansion sleeve 61 is composed of a first body and a second body, and the tensioning function is achieved by relative movement between the two. A conical hole is provided inside the first body, and the second body is provided with a conical surface. The two can be mutually sleeved, and the expansion sleeve 61 can be expanded outward by adjusting the axial position between them. In specific operation, the first body can be fixed and the second body can move along its conical surface, or the second body can be fixed and the first body can move, as long as there is a relative axial displacement between the two. In order to achieve this relative movement, through holes can be provided on the first body and the second body, and fasteners such as bolts can be used to pass through these through holes. When the bolts are screwed, the thrust or tension of the fasteners causes the first body and the second body to move relative to each other. As the relative movement occurs, the first body gradually expands outward under the action of the conical surface of the second body, and fits closely to the inner wall of the lightening hole of the pillow beam 2, thereby providing a stable and reliable fixed force point for the expansion sleeve fixing device 6, ensuring that the multifunctional installation drilling template 3 is firmly fixed during the riveting process. This design cleverly utilizes the principle of relative motion, simplifies the operation process of the expansion sleeve 61, and improves the stability of the fixing effect.

[0090] Please refer to Fig.12 , Fig.12 A structural diagram of the empty spring mounting seat and the bolster provided in an embodiment of the present application.

[0091] like Fig.12 As shown, a bolster 2 and an empty spring mounting seat 1 are sequentially arranged on the carbon fiber floor, the bolster 2 is fixed to the carbon fiber floor by rivets, and the empty spring mounting seat 1 is fixed to the bolster 2 by rivets.

[0092] Please refer to Fig.13 , Fig.13 A position diagram of the empty spring mounting seat and the bolster provided in an embodiment of the present application.

[0093] Specifically, the empty spring mounting seat 1 and the pillow beam 2 are involved in the suspension frame connecting parts. The pillow beam 2 and 16 empty spring mounting seats 1 are connected by BOM-R12 rivets to form AL / AL riveted joints. Every four empty spring mounting seats 1 form a group for installing empty springs. Each empty spring mounting seat 1 has 28 rivet holes, and 16 pieces have a total of 448 rivet points, of which the riveted part thickness of the empty spring mounting seat 1 is 17mm, and the riveted part thickness of the pillow beam 2 is 8mm. Before the empty spring mounting seat 1 is riveted to the pillow beam 2, the riveted position on the empty spring mounting seat 1 has a base hole with a diameter of φ8mm. After the empty spring mounting seat 1 is riveted to the pillow beam 2, a closed cavity is formed inside after the two components are assembled.

[0094] In view of the problems existing in the prior art, such as the large overall size of the chassis and the lack of reliable fulcrums, the empty spring mounting seat is difficult to fix on the pillow beam, which is prone to misalignment, thus affecting the subsequent hole making accuracy; when the 17mm and 8mm aluminum alloy composite laminates are manually drilled, the hole making accuracy is difficult to guarantee, and a large drilling axial force will be generated during the hole making process, which is easy to damage the carbon fiber floor at the bottom of the closed cavity in the final stage of hole making; in addition, the aluminum chips generated during the hole making process are easy to remain in the closed cavity and are difficult to clean. In order to solve these problems, the present application proposes a multifunctional drilling jig and riveting method for positioning, constraining, making holes, and riveting composite parts. This method is specifically aimed at the fixation and riveting of the empty spring mounting seat and the pillow beam of the magnetic levitation narrow body, and realizes the integrated operation of fixing, drilling, making holes and riveting of the empty spring mounting seat 1, which not only simplifies the work process, but also significantly improves the installation efficiency and riveting quality, effectively overcoming the defects in the prior art.

[0095] It should be noted that many of the components mentioned in this application are universal standard parts or components known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or through conventional experimental methods.

[0096] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0097] The above is a detailed introduction to the multifunctional drilling jig and riveting method for the empty spring mounting seat and the pillow beam provided by the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A riveting method for an empty spring mounting seat and a bolster, characterized in that: include: Place the empty spring mounting base near the mounting position of the bolster; Sleeve the multifunctional installation drilling template on the empty spring installation seat, and adjust the multifunctional installation drilling template according to the installation position so that the empty spring installation seat is in the installation position; Fixing the multifunctional installation drilling template to fix the empty spring mounting seat at the installation position; Use a drilling device to sequentially penetrate the empty spring mounting seat and the bolster; Using riveting equipment, rivets are inserted into the holes penetrating the empty spring mounting seat and the bolster in sequence to rivet the empty spring mounting seat and the bolster.

2. The riveting method according to claim 1, characterized in that: The step of fixing the multifunctional installation drilling template comprises: The multifunctional installation drilling template is fixed by combining an expansion sleeve fixing device and a C-type calliper device, wherein the C-type calliper device is arranged at the edge of the bolster, and the expansion sleeve fixing device is arranged at a position away from the edge of the bolster.

3. The riveting method according to claim 2, characterized in that: The steps for using the expansion sleeve fixture include: Putting the expansion sleeve of the expansion sleeve fixing device into the lightening hole of the bolster, so that the expansion sleeve is tightened in the lightening hole, providing a fixed force point for the expansion sleeve fixing device; The first pressing head and the second pressing head of the expansion sleeve fixing device are adjusted so that the first pressing head presses the multifunctional installation drilling template and the second pressing head presses the pillow beam.

4. The riveting method according to claim 1, characterized in that: The steps of using the drilling equipment include: placing the self-expanding drilling template into the guide hole of the multifunctional installation drilling template; Inserting an ADU drill into the self-expanding drill template; The ADU drill is controlled to make holes. During the hole making process, the drill bit speed and feed rate of the ADU drill are automatically controlled by the ADU drill, and the drill cuttings generated are recovered by the ADU drill.

5. The riveting method according to claim 1, characterized in that: When using riveting equipment, rivet from inside to outside and in a symmetrical and staggered order.

6. A multifunctional drilling jig for an empty spring mounting seat and a bolster, suitable for the riveting method for an empty spring mounting seat and a bolster as claimed in any one of claims 1 to 5, characterized in that: It comprises a multifunctional installation drilling template, which is provided with a positioning structure, and the positioning structure is used for nesting with an empty spring mounting seat. The multifunctional installation drilling template is also provided with a guide hole, and the guide hole is used for providing guidance for drilling equipment and riveting equipment.

7. The multifunctional drilling template according to claim 6, characterized in that: The positioning structure comprises a positioning hole, and the positioning hole is used for inserting the protruding structure of the empty spring mounting seat.

8. The multifunctional drilling template according to claim 7, characterized in that: The protrusion structure includes a first protrusion located in the middle area of ​​the empty spring mounting seat and a second protrusion located in the four corner areas of the empty spring mounting seat. The number of the first protrusions is two, and the number of the second protrusions is four.

9. The multifunctional drilling template according to claim 6, characterized in that: It also includes a C-shaped calliper device and an expansion sleeve fixing device, wherein an expansion sleeve is provided in the middle of the expansion sleeve fixing device, and a first pressing head and a second pressing head are provided at both ends.

10. The multifunctional drilling template according to claim 9, characterized in that: The expansion sleeve includes a first body and a second body, the first body is provided with a tapered hole, the second body is provided with a tapered surface, the first body is sleeved on the second body, and the first body is expanded outward under the action of the second body by adjusting the axial positions of the first body and the second body.

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