Method for quickly switching of a pair of frame side frames of a diesel-electric locomotive frame

Abstract

The application discloses a kind of internal combustion, electric locomotive framework side frame group pair tool quick switching method, for the compatibility of side frame tool in prior art is poor, switching time is long, cost is high and precision is difficult to guarantee etc. due to the big difference of vehicle type, the present application designs the side frame tool group pair of multiple vehicle types compatible and different vehicle type supporting positioning plate, X, Y direction positioning stop is equipped on general platform, positioning plate is integrated with muscle plate positioning stop and is positioned by being close to positioning stop, Z direction is attached with general platform, general platform is not moved when switching vehicle type, directly replace positioning plate, general platform is made by processing and processing of group welding box beam, positioning plate is quenched and tempered with 45 number steel and determines positioning stop position according to vehicle type and etches vehicle type serial number, X, Y direction positioning stop is also quenched and tempered with 45 number steel and is fixed in platform notch.This method improves production efficiency, reduces cost, improves tool precision and compatibility.

Description

Technical Field

[0001] This invention relates to the field of electric locomotive manufacturing technology, and in particular to a method for rapid switching of tooling for diesel and electric locomotive frame side frame assembly. Background Technology

[0002] With the development of the railway transportation industry, the market demand for diesel and electric locomotives has become increasingly diversified. These diverse market demands have prompted the company to design and develop various types of locomotives, both on-track and off-track, including diesel and electric locomotives. The bogie frames and side frames of these locomotives vary depending on the model, exhibiting complex and diverse characteristics.

[0003] As a major component of the frame, the side frame's main structure consists of internal stiffeners, inner and outer vertical plates, and upper and lower cover plates. However, side frames vary in length, width, number of internal stiffeners, and their positions across different vehicle models. For example, differences in the length and width of side frames across different models necessitate corresponding adjustments to the dimensions of the required tooling; variations in the number and position of internal stiffeners present challenges in positioning these stiffeners within the tooling.

[0004] In terms of tooling design, previous tooling for similar structural products mainly considered dedicated tooling for mass production or situations where two or three vehicle models used the same tooling tread. For dedicated tooling, when there are significant differences in vehicle structure and high precision requirements, dedicated jigs are basically designed for the side frames of different vehicle models. While this approach can meet the precision requirements of specific vehicle models, it has many drawbacks. On the one hand, with a large number of vehicle models, the number of jigs increases significantly, leading to high jig costs, and tooling storage requires a large amount of factory space. On the other hand, when changing vehicle models, the completed vehicle tooling needs to be returned to the tooling warehouse, and the new tooling needs to be placed on-site. Furthermore, the accuracy of each positioning stop must be reconfirmed, resulting in long changeover times and low efficiency.

[0005] For tooling that achieves flexibility by partially replacing a small number of positioning stops, the positioning stops are easily loosened over time due to frequent disassembly and installation, which can lead to the inability to meet the tooling accuracy requirements and affect product quality. Summary of the Invention

[0006] To address the aforementioned technical problems with existing diesel and electric locomotive side frame assemblies regarding tooling, such as poor vehicle compatibility, long changeover times, high costs, and difficulty in guaranteeing accuracy, this invention provides a method for rapid tooling switching between diesel and electric locomotive side frame assemblies. This invention achieves compatibility of side frame tooling for multiple vehicle models, with different models sharing a common platform. A set of three positioning plates is added between the common platform and the positioning stops. Positioning stops are installed on these positioning plates. This installation of positioning plates enables compatibility of tooling for different vehicle models, reduces the number of jigs, and reduces tooling storage space. X and Y-axis positioning stops are set on the common platform. During model changeover, the positioning plates are directly pressed against the positioning stops and secured with bolts, enabling rapid tooling switching between different vehicle models and improving production efficiency.

[0007] The technical means employed in this invention are as follows:

[0008] A method for rapid tooling switching between side frame assemblies of diesel and electric locomotives includes the following steps:

[0009] Step 1: Analyze the side frame dimensions of the vehicle models that need to be compatible to ensure that the tire pair can be compatible with the maximum length, width and height of all products;

[0010] Step 2: Integrate the rib plate positioning stops for each vehicle model onto a single positioning plate. Switching the positioning plate allows for switching of the rib plate positioning stops, thus addressing the issue of tooling flexibility for different vehicle model groups.

[0011] Step 3: Set up X and Y directional positioning stops on the universal platform. Install the positioning plate on the universal platform and determine its X, Y, and Z directional positioning dimensions. The Z directional positioning plate is directly attached to the universal platform, and the X and Y directional positioning plates are directly pressed against the X and Y directional positioning stops to achieve rapid switching of positioning plates, thereby solving the problem of rapid switching of tooling positioning stops for side frame assemblies of different vehicle models.

[0012] Step 4: When production requires switching production models, the general platform remains unchanged, and the positioning plate on the tire tread is directly replaced to achieve the purpose of quickly and accurately switching the assembly tooling.

[0013] Furthermore, the universal platform is a welded box beam. After welding, it undergoes heat treatment and machining to form a small platform with T-slot plates, which serves as the basic platform for flexible chemical equipment and is used to install positioning plates for different vehicle models as well as universal clamping and locking devices.

[0014] Furthermore, the positioning plate is made of 45# steel plate by machine processing and tempering. The position of the positioning stop is determined according to the internal stiffening plate size of the side frame of each model, and positioning holes are machined for installing the positioning stop of the positioning stiffening plate. The positioning plates are different for different models. The positioning plate of each model consists of three base plates, stiffening plate positioning stops and tightening screws at both ends.

[0015] Furthermore, each positioning plate is etched with the model name and serial number for easy and quick identification.

[0016] Furthermore, the X and Y directional positioning stops are machined and tempered from No. 45 steel plates. The X and Y directional positioning stops are placed into the recessed positioning slots machined on the foundation platform and clamped in place, and then secured with bolts. There is one X directional positioning stop and six Y directional positioning stops.

[0017] Furthermore, when switching between different vehicle models, the three positioning plates of that model are placed sequentially on the base platform, close to the X and Y direction positioning stops, and fitted to the platform. The fixing bolts are then tightened to complete the rapid switching of the positioning stops of each component of the side frame for different vehicle models.

[0018] Furthermore, tooling storage racks are manufactured according to the length, width, and height of the positioning plates, so that positioning plates of different models can be stored on upper and lower levels, minimizing the area occupied by tooling storage.

[0019] Furthermore, a buffer pad is provided between the positioning plate and the universal platform to reduce wear and tear on both during installation and use.

[0020] Furthermore, the edges of the X and Y directional positioning stops are chamfered to facilitate the clamping and installation of the positioning plates.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. The present invention provides a method for rapid switching of tooling for the side frame assembly of internal combustion and electric locomotives, which realizes rapid switching of tooling for different vehicle models. By setting X and Y directional positioning stops on a universal platform, the positioning plate directly abuts against the positioning stops and is fixed with bolts. When switching vehicle models, there is no need to adjust the tooling in a cumbersome way like the traditional replacement method, which greatly shortens the changeover time and improves production efficiency.

[0023] 2. The present invention provides a method for rapid switching of side frame assembly tooling for internal combustion and electric locomotives, which reduces the number of jigs and designs a side frame tooling assembly jig compatible with multiple models. Different models share a common platform, and only the positioning plate needs to be replaced. This avoids manufacturing a large number of special jigs for each model, thereby reducing the manufacturing cost of jigs.

[0024] 3. The present invention provides a method for rapid switching of tooling for the side frame assembly of internal combustion and electric locomotives, which reduces the tooling storage area. Due to the reduction in the number of jigs, and the manufacture of tooling storage racks according to the size of the positioning plates, positioning plates of different models can be stored on upper and lower levels, saving the factory area required for tooling storage and further reducing costs.

[0025] 4. This invention provides a method for rapid switching of side frame assembly tooling for internal combustion and electric locomotives, achieving compatibility of side frame tooling for multiple vehicle models. By analyzing the side frame dimensions of the vehicle models requiring compatibility, it ensures that the assembly tires can be compatible with the maximum length, width, and height of all products. Simultaneously, the rib positioning stops for each vehicle model are integrated onto a single positioning plate, solving the problem of flexibility in tooling assembly for different vehicle models and improving the compatibility of the tooling with side frames of different vehicle models.

[0026] 5. The present invention provides a method for quick switching of tooling for the side frame assembly of internal combustion and electric locomotives. The rib plate positioning stop is integrated into the positioning plate, which replaces the direct installation of the positioning stop on the main body of the tooling. This avoids the problem of positioning stop loosening caused by frequent replacement of positioning stops, thereby improving the tooling accuracy and ensuring product quality.

[0027] Based on the above reasons, this invention can be widely promoted in the field of electric locomotive manufacturing technology. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application 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 recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a top view of the apparatus structure for a method of rapid tooling switching between the side frame assembly of an internal combustion and electric locomotive in an embodiment of the present invention;

[0030] Figure 2 This is a front view of the apparatus structure for a method of rapid tooling switching between the side frame assembly of an internal combustion and electric locomotive according to an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the etching of the positioning plate in a method for rapid switching of tooling between the side frame assembly of an internal combustion and electric locomotive according to an embodiment of the present invention.

[0032] In the diagram: 1. X-axis positioning stop; 2. General platform; 3. Y-axis positioning stop; 4. Positioning plate; 5. Tightening device; 6. Clamping device. Detailed Implementation

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0036] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0037] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0038] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0039] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0040] like Figures 1 to 3 As shown, a method for rapid tooling switching between diesel and electric locomotive frame side frame assemblies includes the following steps:

[0041] Step 1: Analyze the side frame dimensions of the vehicle models that need to be compatible to ensure that the tire pair can be compatible with the maximum length, width and height of all products;

[0042] Step 2: Integrate the rib plate positioning stops for each vehicle model onto a positioning plate 4. Switch the positioning plate 4 to switch the rib plate positioning stops, thus solving the problem of tooling flexibility for different vehicle model groups.

[0043] Step 3: Set X and Y direction positioning stops 1 / 3 on the general platform 2, install positioning plate 4 on the general platform 2, and determine its X, Y and Z direction positioning dimensions. The Z direction positioning plate 4 is directly attached to the general platform 2, and the X and Y direction positioning plates 4 are directly close to the X and Y direction positioning stops 1 / 3 to realize the quick switching of positioning plate 4, thereby solving the problem of quick switching of tooling positioning stops for side frame assemblies of different vehicle models.

[0044] Step 4: When production requires switching production models, the general platform 2 remains unchanged, and the positioning plate 4 on the tire tread is directly replaced to achieve the purpose of quickly and accurately switching the assembly tooling.

[0045] Furthermore, the general platform 2 is a welded box beam. After welding, it undergoes heat treatment and machining to form a small platform with a T-slot plate, which serves as the basic platform for flexible chemical equipment and is used to install positioning plates 4 for different vehicle models, as well as general clamping devices 5 and clamping devices 6.

[0046] Furthermore, the positioning plate 4 is installed on the general platform 2. It is necessary to determine its positioning dimensions in the X, Y, and Z directions. For Z-direction positioning, the positioning plate 4 can be directly attached to the general platform 2. For X and Y-direction positioning, since directly using a tape measure to measure the dimensions to determine the position of the positioning plate 4 is time-consuming and prone to errors, the X and Y-direction positioning stops 1 / 3 are set on the general platform 2. When installing the positioning plate 4, the positioning plate 4 is directly pressed against the X and Y-direction positioning stops 1 / 3 to achieve rapid positioning.

[0047] Furthermore, the positioning plate 4 is made of No. 45 steel plate by machine processing and tempering. The position of the positioning stop is determined according to the internal stiffener plate size of the side frame of each model, and positioning holes are machined for installing the positioning stop of the positioning stiffener plate. The positioning plate 4 is different for different models. The positioning plate 4 of each model consists of three base plates, stiffener plate positioning stops and tightening screws at both ends.

[0048] Furthermore, install the positioning plate 4 on the general platform 2 according to the design requirements, ensuring that the positioning plate 4 is tightly close to the X and Y direction positioning stops 1 / 3 and fits well with the platform. During the installation process, pay attention to aligning the positioning holes on the positioning plate 4 with the corresponding positioning stops so that the positioning stops of the positioning rib plate can be installed later.

[0049] Furthermore, the model name and serial number are etched on each positioning plate 4 for easy and quick identification.

[0050] Furthermore, the X and Y directional positioning blocks 1 / 3 are machined and tempered from No. 45 steel plate. The X and Y directional positioning blocks 1 / 3 are placed into the recessed positioning slots machined on the foundation platform and clamped in place, and then secured with bolts. There is one X directional positioning block 1 and six Y directional positioning blocks 3.

[0051] Furthermore, when switching between different vehicle models, the three positioning plates 4 of that model are placed sequentially on the base platform, close to the X and Y direction positioning stops 1 / 3, and fitted to the platform. The fixing bolts are then tightened to complete the rapid switching of the positioning stops of each component of the side frame for different vehicle models.

[0052] Furthermore, keeping the general platform 2 unchanged, directly replace the positioning plate 4 on the tire tread, place the three positioning plates 4 corresponding to the new model on the base platform in sequence, close to the X and Y positioning stops 1 / 3, fit with the platform, and then tighten the fixing bolts to complete the quick switching of the positioning stops of each component of the side frame for different models.

[0053] Furthermore, according to the length, width and height of the positioning plate 4, a tooling storage rack is manufactured so that positioning plates 4 of different models can be stored on upper and lower layers, minimizing the area occupied by tooling storage.

[0054] Furthermore, a buffer pad is provided between the positioning plate 4 and the general platform 2 to reduce wear and tear on both during installation and use, and to extend the service life of the tooling.

[0055] Furthermore, the edges of the X and Y directional positioning stops are chamfered to facilitate the clamping and installation of the positioning plate 4, thereby improving the convenience and accuracy of installation.

[0056] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for rapid switching of tooling for side frame assemblies of diesel and electric locomotives, characterized in that, Includes the following steps: Step 1: Analyze the side frame dimensions of the vehicle models that need to be compatible to ensure that the tire pair can be compatible with the maximum length, width and height of all products; Step 2: Integrate the rib plate positioning stops for each vehicle model onto a single positioning plate. Switch the rib plate positioning stops by switching the positioning plate. The positioning plate for each vehicle model consists of three base plates, rib plate positioning stops, and end tension screws. Step 3: Set up X and Y direction positioning stops on the general platform. Install the positioning plate on the general platform and determine its X, Y, and Z direction positioning dimensions. The Z direction positioning plate is directly attached to the general platform, and the X and Y direction positioning plates are directly pressed against the X and Y direction positioning stops to achieve quick switching of positioning plates. The X and Y direction positioning stops are made of No. 45 steel plate by machine-processing and tempering. The X and Y direction positioning stops are placed into the recessed positioning slots machined on the base platform and locked in place with bolts. There is one X direction positioning stop and six Y direction positioning stops. Step 4: When production needs to switch production models, the general platform remains unchanged. The positioning plates on the tire tread are directly replaced. The three positioning plates of the model are placed on the general platform in sequence and brought close to one X-axis positioning stop and six Y-axis positioning stops to achieve rapid positioning and achieve the purpose of quickly and accurately switching the assembly tooling.

2. The method for rapid tooling switching between diesel and electric locomotive frame side frame assemblies according to claim 1, characterized in that: The general platform is a welded box beam. After welding, it undergoes heat treatment and machining to form a small platform with T-slot plates. This platform serves as the base platform for flexible chemical equipment and is used to install positioning plates for different vehicle models, as well as general clamping and locking devices.

3. The method for rapid tooling switching of the side frame assembly of a diesel / electric locomotive according to claim 1, characterized in that: The positioning plate is made of No. 45 steel plate by machine processing and tempering. The position of the positioning stop is determined according to the internal stiffening plate size of the side frame of each model, and positioning holes are machined for installing the positioning stops of the positioning stiffening plate. The positioning plates are different for different models. The positioning plate of each model consists of three base plates, stiffening plate positioning stops and tightening screws at both ends.

4. The method for rapid tooling switching between diesel and electric locomotive frame side frame assemblies according to claim 3, characterized in that: Each positioning plate is engraved with the model name and serial number for easy and quick identification.

5. The method for rapid tooling switching between diesel and electric locomotive frame side frame assemblies according to claim 1, characterized in that: Based on the length, width, and height of the positioning plate, a tooling storage rack is manufactured to allow positioning plates of different vehicle models to be stored on upper and lower levels, minimizing the area occupied by tooling storage.

6. The method for rapid tooling switching of the side frame assembly of a diesel / electric locomotive according to claim 1, characterized in that: A buffer pad is provided between the positioning plate and the universal platform to reduce wear and tear on both during installation and use.

7. The method for rapid tooling switching between diesel and electric locomotive frame side frame assemblies according to claim 1, characterized in that: The edges of the X and Y directional positioning stops are chamfered to facilitate the clamping and installation of the positioning plates.

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