Composite manufacturing tool for starting air pipe group of diesel engine

Abstract

The utility model provides a diesel engine starting air pipe set composite manufacturing tool, and belongs to the technical field of marine diesel engine pipe fitting manufacturing. The left end and the right end of the upper portion of the tool base are provided with a header pipe left pipe opening positioning support and a header pipe right pipe opening positioning support according to the space structure positions of pipe openings in the two ends of an air distribution header pipe, and header pipe linear supports for supporting the air distribution header pipe are evenly distributed on one side of the upper portion of the tool base in the length direction. A plurality of cylinder connecting piece positioning supports are evenly distributed on the upper portion of the tool base in the length direction. A starting air pipe end positioning support is arranged at the right end of the upper portion of the tool base, and pipe clamp positioning supports are evenly distributed on the upper portion of the tool base in the length direction. According to the utility model, the composite tool is manufactured to assemble the diesel engine starting air pipe group, and cooperative control of a plurality of space point interface positions is realized in the manufacturing and checking stages; the negative influence of welding deformation on the spatial position of the pipe fitting is eliminated; the operation time in high-altitude and narrow space is reduced, the working intensity is reduced, and the installation safety is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of manufacturing marine diesel engine pipe fittings, and in particular relates to a composite manufacturing tool for a diesel engine starting air pipe assembly. Background Art

[0002] High-power marine diesel engines are started with compressed air. The compressed air enters each cylinder in turn, pushing the piston to drive the crankshaft to rotate. When the crankshaft reaches a limited speed, the fuel sprayed into the combustion chamber can ignite and burn on its own, allowing the diesel engine to run normally.

[0003] During the whole process, compressed air enters the air pipe of each cylinder through the air distributor, opens and closes the air control valve of each cylinder in turn, and the air in the main air pipe enters each cylinder in the order of opening and closing the valve, thereby starting the diesel engine. If there are problems such as leakage or deformation of the pipe fittings in the system, resulting in insufficient pressure in the control valve or the main air pipe, not only will the diesel engine be difficult to start normally, but it will also cause damage to key parts of the diesel engine.

[0004] A certain type of twelve-cylinder diesel engine has a V-shaped structure, which is divided into two types: A-row air pipe and B-row air pipe. The A-row starting air pipe group is used for explanation. Figure 3-10 As shown, it is composed of an air distribution main pipe 8-1, a cylinder head control intake pipe 8-4, a positioning connection block 8-5, a plurality of positioning pipe clamps 8-6, an A column starting air pipe 8-7, a cylinder head intake pipe 8-3, each cylinder head 8-2 and other components, which have a spatial structural relationship with each other. The air distribution main pipe 8-1 has six air pipe interfaces, which are respectively connected to the cylinder head main push air interface. At the same time, the cylinder head control air pipe is connected to the control valve. The control air pipe opens and closes the air control valve according to the intake logic to control the air in the main air pipe and start the movement of the piston in the cylinder head. The principle is: the starting air pipe 8-7 of the A column is connected to each cylinder in turn through the positioning connection block 8-5, and then connected to the cylinder head control intake pipe 8-4 in turn; at the same time, the air distribution main pipe 8-1 is connected to the cylinder head intake pipe 8-3, and the spatial interface when entering the cylinder is determined by the positioning connection block 8-5, and enters each cylinder head 8-2, so that each cylinder is connected to each interface in the air distribution pipe in a one-to-one correspondence. The control air pipeline is responsible for the input and termination of compressed air through the control valve to start the diesel engine.

[0005] The sleeve group consists of 18 pipe fittings and 10 pipe clamps, and the whole system involves 32 interfaces. The traditional manufacturing method is to assemble the air distribution main pipe on a special tooling, while the cylinder head intake pipe and A-row starting air pipe are manufactured by on-site piping.

[0006] Through the investigation of domestic peers, in the diesel engine manufacturing industry for ships and power stations, there are two solutions for the manufacturing and installation of high-power diesel engine control air pipes:

[0007] Solution 1: Pipe fittings are prefabricated according to their product drawings or process drawings. The spatial position and dimensions of pipe end flanges and connectors are ensured on the tooling. The spatial direction of the pipeline profile and the spatial dimensions of the pipe end interface are determined to complete the single pipe fitting product, which can be directly installed and connected during installation.

[0008] Option 2: Use the method of on-site preparation of pipe fittings, that is, according to the actual installation environment and the interfaces of various components installed on the fuselage, determine the spatial position of the pipe fittings on-site, make sample rods, and then bend and weld the pipe fittings piece by piece to finally complete the manufacture and installation of the pipe fittings.

[0009] The two existing manufacturing schemes of the starting air pipe each have their own disadvantages during the actual manufacturing and installation and use processes.

[0010] With Plan 1, the single-piece design of the pipe fitting cannot form an intuitive reflection of the overall layout structure; the use of tooling to manufacture single pipe fittings has free size precision tolerances, and it is impossible to verify the accuracy of each interface when the pipe group is installed in advance, and there is a risk of dimensional deviations during installation and needing to be repaired; when multiple pipe fittings are connected, the pipe fitting tolerances form cumulative errors, resulting in the situation that some interfaces cannot be installed in place during installation. After this problem occurs during installation, the pipe fittings that are not installed in place need to be repaired or remade. These operations not only generate additional manpower waste, but also increase the manufacturing cost of the pipe fittings and lengthen the production cycle, which in turn affects the installation progress of the entire machine.

[0011] The second scheme is adopted, which is to manufacture pipe fittings by making sample pipes on site. The production of sample pipes requires comparison, bending, correction, re-bending, verification and other steps. Affected by the skills of personnel, the direction of manually bent pipe fittings is very random, and it is easy to have pipeline space staggering, non-parallel pipelines in the same direction, and high and low staggered phenomena. The turning position of the pipeline space is random. After the arrangement of multiple pipelines, a staggered and messy shape is formed, and the consistency of pipe fittings is poor; the ovality of the manually bent part of the pipe fittings is out of tolerance, the inner diameter of the pipe is greatly deformed, the air pressure flow in the pipe is attenuated, the pressure is reduced, and the diesel engine is delayed. In places with strict requirements on the starting time, it will lead to serious consequences; the manual manufacturing dimensions of the same model of diesel engine pipe fittings are different, and the technical ability is poorly inherited, which is not conducive to standardized and digital production; the spatial data of the pipe fitting bending production after the layout is difficult to record, which is not conducive to technical status management and information sharing; the existing pipe fittings only realize the functionality of connectivity, while the appearance of the pipe fittings is not compact enough and the appearance is poor, and the appearance quality and overall layout of the pipe fittings cannot be effectively controlled. Therefore, it is necessary to propose improvements. Utility Model Content

[0012] The technical problem solved by the utility model is as follows: a composite manufacturing tool for a diesel engine starting air pipe group is provided. The utility model aims to assemble the diesel engine starting air pipe group by making a composite tool, and realize the coordinated control of the interface positions of multiple spatial points in the manufacturing and verification stages; eliminate the negative impact of welding deformation on the spatial position of pipe fittings; reduce the operation time at high altitudes and narrow spaces, reduce work intensity, and improve installation safety; the direction of pipe fittings is reasonable, the phenomenon of on-site piping is eliminated, and the accuracy of workshop manufacturing and verification installation of various pipe fittings is realized, and the influence of the cumulative tolerance of pipe fitting connections on installation accuracy is avoided.

[0013] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0014] A composite manufacturing tooling for a diesel engine starting air pipe group, which is a tooling for composite assembly of multiple pipes in a diesel engine starting air pipe group, comprises a tooling base, wherein the left and right ends of the upper portion of the tooling base are respectively provided with a main pipe left pipe opening positioning support and a main pipe right pipe opening positioning support for positioning both ends of the air distribution main pipe in the starting air pipe group according to the spatial structural positions of the pipe openings at both ends thereof, and a plurality of main pipe linear supports for supporting the air distribution main pipe are evenly distributed along the length direction on one side of the upper portion of the tooling base; a plurality of cylinder connecting piece positioning supports for positioning the cylinder head intake pipe, the cylinder head control intake pipe and the positioning connecting block corresponding to each cylinder head are evenly distributed along the length direction on one side of the upper portion of the tooling base; a starting air pipe end positioning support for positioning the ports of a plurality of starting air pipes is provided at the upper right end of the tooling base, and a plurality of pipe clamp positioning supports for positioning the positioning pipe clamp are evenly distributed along the length direction on the upper portion of the tooling base.

[0015] To further limit the above scheme, the left pipe outlet positioning support of the main pipe includes a left pipe outlet L-shaped positioning support plate, the horizontal plate of the left pipe outlet L-shaped positioning support plate is fixedly connected to the tooling base by screws, the vertical plate and the horizontal plate of the left pipe outlet L-shaped positioning support plate are connected by a left pipe outlet reinforcement plate, and the vertical plate of the left pipe outlet L-shaped positioning support plate is provided with positioning holes and connecting holes for positioning and connecting it according to the spatial position of the left pipe outlet of the air distribution main pipe.

[0016] To further limit the above scheme, the right pipe outlet positioning support of the main pipe includes a right pipe outlet L-shaped positioning support plate, the horizontal plate of the right pipe outlet L-shaped positioning support plate is fixedly connected to the tooling base by screws, the vertical plate and the horizontal plate of the right pipe outlet L-shaped positioning support plate are connected by a right pipe outlet reinforcement plate, and the vertical plate of the right pipe outlet L-shaped positioning support plate is provided with positioning holes and connecting holes for positioning and connecting it according to the spatial position of the right pipe outlet of the air distribution main pipe.

[0017] To further define the above scheme, the height of each of the main pipeline linear supports is determined according to the spatial height of the supported point of the air distribution main pipeline, and the main pipeline linear support includes a main pipeline linear support rod, the lower part of the main pipeline linear support rod is fixedly connected to the tooling base by screws, and the upper end of the main pipeline linear support rod is fixed with an arc support plate for supporting the lower part of the outer wall of the air distribution main pipeline.

[0018] To further define the above scheme, each of the cylinder connecting parts positioning supports includes a supporting base plate, the supporting base plate is fixedly connected to the tooling base by screws, a positioning plate for each cylinder connecting part is vertically provided on the upper part of the supporting base plate, and the positioning plate for each cylinder connecting part is fixedly connected to the supporting base plate through a positioning plate reinforcement plate, and positioning holes and connecting holes are provided on the positioning plates of each cylinder connecting part for positioning and connecting them respectively according to the spatial positions of the cylinder head intake pipe, the cylinder head control intake pipe and the positioning connecting block, and a pipe interface support block for supporting the corresponding air pipe interface is provided on the supporting base plate according to the structural position of the air pipe interface on the air distribution main pipe for connecting to each cylinder.

[0019] To further define the above scheme, the starting air pipe end positioning support includes an L-shaped tube end positioning plate for flush positioning the end faces of multiple starting air pipes, the horizontal plate at the lower part of the L-shaped tube end positioning plate is fixedly connected to the tooling base by screws, and a tube end support block is provided on the left side of the L-shaped tube end positioning plate, and the tube end support block is fixedly connected to the tooling base by screws, and the upper part of the tube end support block is provided with a tube end lower pressure block, a tube end middle pressure block, and a tube end upper pressure block in sequence from bottom to top, and the tube end lower pressure block and the tube end middle pressure block and the tube end middle pressure block are all used to press the ends of multiple starting air pipes, and the corresponding positions of the pressing surfaces of the tube end lower pressure block, the tube end middle pressure block, and the tube end upper pressure block are all provided with arc grooves that are compatible with the outer cylindrical surface of the starting air pipe, and the tube end lower pressure block, the tube end middle pressure block, and the tube end upper pressure block are connected together by screws.

[0020] To further limit the above scheme, the height of each pipe clamp positioning support is determined according to the spatial height of the positioning pipe clamp, and the pipe clamp positioning support includes a pipe clamp support rod, the lower part of the pipe clamp support rod is fixedly connected to the tooling base by screws, and the upper end of the pipe clamp support rod is fixed with a pipe clamp support plate for supporting the positioning pipe clamp, and the pipe clamp support plate is arranged to be an inclined support plate according to the spatial installation structure of the positioning pipe clamp.

[0021] The advantages of this utility model compared with the prior art:

[0022] 1. This solution implements digital design of pipe groups, so that multiple spatial points can form digital coordinate values ​​respectively, and realize coordinated control of the interface positions of multiple spatial points during the manufacturing and verification stages; eliminate the negative impact of welding deformation on the spatial position of pipe fittings; reduce the operation time at high altitudes and narrow spaces, reduce work intensity, and improve installation safety; realize CNC bending manufacturing of pipe fittings, and control the ovality of the bending part of pipe fittings to less than 8%; the direction of pipe fittings is reasonable, flow attenuation is reduced, and ignition delay is avoided; eliminate the phenomenon of on-site piping, realize the accuracy of workshop manufacturing and verification installation of various pipe fittings, and avoid the influence of the cumulative tolerance of pipe fitting connections on installation accuracy.

[0023] 2. This solution eliminates the cumulative tolerances between pipes and achieves the effect of successful one-time installation of a complete set of pipes: realizes CNC bending of the control air pipe and the cylinder head intake pipe, and realizes simultaneous manufacturing and verification of multiple pipes; realizes the aesthetic layout of the control air pipe and the cylinder head intake pipe; realizes the consistency of the pipe layout process of the control air pipe and the cylinder head intake pipe; eliminates the influence of the cumulative tolerances of the control air pipe and the cylinder head intake pipe on the interface installation;

[0024] 3. This solution changes the pipe manufacturing mode: after prefabricating the air main pipe, cylinder head control intake pipe, positioning connection block, and cylinder head intake pipe, the CNC bending manufacturing of the A-row control air pipe is then realized to ensure the consistency and accuracy of the pipes;

[0025] 4. The design form of pipe fittings in this scheme has been changed: digital design in a three-dimensional environment determines the spatial interface of multiple pipe fittings, realizes the overall design of the pipe group, and optimizes the layout of pipe fittings with a top-down design approach, taking into account factors such as direction and interference, with high design efficiency and high accuracy;

[0026] 5. The production of tooling in this scheme reduces the manufacturing cost of pipe fittings: through the use of special tooling, multiple pipe fittings are prefabricated, and the cumulative errors of the pipe fittings are reviewed and eliminated on the tooling, and then they are put into storage in groups. When the group of pipe fittings is installed, the one-time installation success rate is 100%, which reduces the waste of materials in the manufacturing process, coordinates the production plan, shortens the production preparation time, improves the manufacturing efficiency, and reduces the overall manufacturing cost;

[0027] 6. The use of this solution changes the appearance quality of pipe fittings: the CNC bending of pipe fittings has the characteristics of small bending ovality and strong consistency. It is bent and assembled as a whole according to the design requirements to achieve the direction conversion of pipe fittings between multiple planes. The pipe fittings are arranged horizontally and vertically, with smooth transitions and good aesthetics. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural front view of a composite manufacturing tooling for a diesel engine starting air pipe assembly provided by the utility model;

[0029] Figure 2A structural top view of a composite manufacturing tooling for a diesel engine starting air pipe assembly provided by the utility model;

[0030] Figure 3 This is a structural front view of the diesel engine starting air pipe assembly in the utility model;

[0031] Figure 4 It is a top view of the structure of the diesel engine starting air pipe group in the utility model;

[0032] Figure 5 This is a right side view of the structure of the diesel engine starting air pipe group in the utility model;

[0033] Figure 6 This is a structural front view of the air distribution main pipe in the utility model;

[0034] Figure 7 It is a left view of the structure of the air distribution main pipe in the utility model;

[0035] Figure 8 This is a schematic diagram of the structure of the cylinder head intake pipe of the utility model;

[0036] Fig. 9 This is a schematic diagram of the structure of the cylinder head controlling the intake pipe in the utility model;

[0037] Fig.10 It is a structural schematic diagram of the starting air pipe in the utility model. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0040] See also Figure 1-10 , describe the embodiments of the present utility model in detail.

[0041] Embodiment: Diesel engine starting air pipe assembly composite manufacturing tooling, the tooling is for composite assembly of multiple pipes in a starting air pipe assembly 8 of a certain type of twelve-cylinder diesel engine, see Figure 1-2 As shown, it includes a tooling base 1, and the left and right ends of the upper part of the tooling base 1 are respectively provided with a main pipe left pipe opening positioning support 2 and a main pipe right pipe opening positioning support 3 for positioning the two ends of the air distribution main pipe 8-1 in the starting air pipe group 8 according to the spatial structural positions of the pipe openings at both ends thereof; one side of the upper part of the tooling base 1 is evenly distributed along the length direction with a plurality of main pipe linear supports 4 for supporting the air distribution main pipe 8-1; one side of the upper part of the tooling base 1 is evenly distributed along the length direction with a plurality of cylinder connecting piece positioning supports 5 for positioning the cylinder head intake pipe 8-3, the cylinder head control intake pipe 8-4 and the positioning connecting block 8-5 corresponding to each cylinder head 8-2; the upper right end of the tooling base 1 is provided with a starting air pipe end positioning support 6 for positioning the ports of a plurality of starting air pipes 8-7, and the upper part of the tooling base 1 is evenly distributed along the length direction with a plurality of pipe clamp positioning supports 7 for positioning and supporting the positioning pipe clamp 8-6.

[0042] In a specific embodiment: the main pipe left pipe outlet positioning support 2 includes a left pipe outlet L-shaped positioning support plate 2-1, the horizontal plate of the left pipe outlet L-shaped positioning support plate 2-1 is fixedly connected to the tooling base 1 by screws, the vertical plate and the horizontal plate of the left pipe outlet L-shaped positioning support plate 2-1 are connected by a left pipe outlet reinforcement plate 2-2, and the vertical plate of the left pipe outlet L-shaped positioning support plate 2-1 is provided with positioning holes and connecting holes for positioning and connecting according to the spatial position of the left pipe outlet of the air distribution main pipe 8-1.

[0043] In a specific embodiment: the main pipe right pipe outlet positioning support 3 includes a right pipe outlet L-shaped positioning support plate 3-1, the horizontal plate of the right pipe outlet L-shaped positioning support plate 3-1 is fixedly connected to the tooling base 1 by screws, the vertical plate and the horizontal plate of the right pipe outlet L-shaped positioning support plate 3-1 are connected by a right pipe outlet reinforcement plate 3-2, and the vertical plate of the right pipe outlet L-shaped positioning support plate 3-1 is provided with positioning holes and connecting holes for positioning and connecting according to the spatial position of the right pipe outlet of the air distribution main pipe 8-1.

[0044] In a specific embodiment: the height of each of the main pipeline linear supports 4 is determined according to the spatial height of the supported point of the air distribution main pipeline 8-1, and the main pipeline linear support 4 includes a main pipeline linear support rod 4-1, the lower part of which is fixedly connected to the tooling base 1 by screws, and the upper end of the main pipeline linear support rod 4-1 is fixed with an arc support plate 4-2 for supporting the lower part of the outer wall of the air distribution main pipeline 8-1.

[0045] In a specific embodiment: each of the cylinder connection parts positioning supports 5 includes a support base plate 5-1, and the support base plate 5-1 is fixedly connected to the tooling base 1 by screws, and a cylinder connection part positioning plate 5-2 is vertically provided on the upper part of the support base plate 5-1, and the cylinder connection part positioning plate 5-2 is fixedly connected to the support base plate 5-1 through a positioning plate reinforcement plate 5-3, and each cylinder connection part positioning plate 5-2 is provided with a positioning hole and a connection hole for positioning and connecting them respectively according to the spatial positions of the cylinder head intake pipe 8-3, the cylinder head control intake pipe 8-4 and the positioning connection block 8-5, and the support base plate 5-1 is provided with a pipe interface support block 5-4 for supporting the corresponding air pipe interface according to the structural position of the air pipe interface on the air distribution main pipe 8-1 for connecting to each cylinder.

[0046] In a specific embodiment: the starting air pipe end positioning support 6 includes an L-shaped pipe end positioning plate 6-1 for flush positioning the end faces of multiple starting air pipes 8-7, the horizontal plate at the bottom of the L-shaped pipe end positioning plate 6-1 is fixedly connected to the tooling base 1 by screws, and a pipe end support block 6-2 is provided on the left side of the L-shaped pipe end positioning plate 6-1, and the pipe end support block 6-2 is fixedly connected to the tooling base 1 by screws, and the upper part of the pipe end support block 6-2 is provided with a pipe end lower pressure block 6-3, a pipe end middle pressure block 6-4, and a pipe end middle pressure block 6-5 in sequence from bottom to top. The pipe end lower pressure block 6-3 and the pipe end middle pressure block 6-4, as well as the pipe end middle pressure block 6-4 and the pipe end upper pressure block 6-5 are used to press the ends of multiple starting air pipes 8-7. The corresponding positions of the pressing surfaces of the pipe end lower pressure block 6-3, the pipe end middle pressure block 6-4, and the pipe end upper pressure block 6-5 are all provided with arc grooves adapted to the outer circumferential surface of the starting air pipe 8-7. The pipe end lower pressure block 6-3, the pipe end middle pressure block 6-4, and the pipe end upper pressure block 6-5 are connected together by screws. This structure is aimed at locating the starting installation position of the six starting air pipes in the A column of the V-type twelve-cylinder diesel engine on the tooling, and is arranged closely in two rows and three lines. Therefore, the pipe end lower pressure block 6-3, the pipe end middle pressure block 6-4, and the pipe end upper pressure block 6-5 form a positioning hole structure of two rows and three lines.

[0047] In a specific embodiment: the height of each of the pipe clamp positioning supports 7 is determined according to the spatial height of the positioning pipe clamp 8-6, the pipe clamp positioning support 7 includes a pipe clamp support rod 7-1, the lower part of the pipe clamp support rod 7-1 is fixedly connected to the tooling base 1 by screws, and the upper end of the pipe clamp support rod 7-1 is fixed with a pipe clamp support plate 7-2 for supporting the positioning pipe clamp 8-6, and the pipe clamp support plate 7-2 is arranged as an inclined support plate according to the spatial installation structure of the positioning pipe clamp 8-6.

[0048] The composite manufacturing tooling of the diesel engine starting air pipe assembly is the positioning basis of the composite manufacturing process of the pipe fittings. It adopts the one-side two-pin positioning method and uses the tooling plate to locate the interface of the pipe fittings. On the tooling, the positioning device of the pipe mouth and the spatial profile of the air distribution main pipe 8-1 is designed, and then according to the connection requirements of the pipe fittings, the spatial positioning position of the positioning connection block 8-5 is further designed on the tooling, and it is connected to the cylinder head intake pipe 8-3 corresponding to each cylinder number of the diesel engine in the form of a single-tube plug-in seal. The starting air pipe 8-7 is further positioned on the tooling, and the six control air pipes are positioned at the starting installation position on the tooling. They are arranged closely in two rows and three lines. During the arrangement process, they are compressed in sections with the positioning pipe clamp 8-6. The form, size and position of the pipe clamp are the same as those during installation. Each air pipe is connected and fixed to the positioning connection block respectively. In this way, the control air pipes in column A and the intake pipes of each cylinder head form the same spatial positioning, and then they are connected to the cylinder head through the cylinder head control intake pipe to realize the start and closure of the air control valve.

[0049] This tooling design implementation method:

[0050] 1. Based on the classification of the functions and structural positions of the pipe fittings, the manufacturing of single pipe fittings on the tooling is transformed into the composite manufacturing, calibration and installation of multiple pipe fittings on the tooling. The machined dimensions of the fuselage are used as the positioning reference to make the design reference of the tooling consistent with the installation surface during installation. The number of pipe fittings in the pipe group is planned based on the functions of different pipe fittings and the interface of the machined surface of the fuselage;

[0051] 2. Establish a 3D digital model environment according to the 2D drawings. In the same coordinate system, through the digital model assembly of the air distribution main pipe, cylinder head control intake pipe, positioning connection block, positioning pipe clamp, control air pipe, cylinder head intake pipe and other parts, determine the position and size of each space interface and the spatial direction of the pipe fittings, predict and eliminate the possibility of interference with other parts, and realize the layout design of the overall pipe group;

[0052] 3. Based on the digital model of the pipe group, design the special tooling for pipe group manufacturing. When designing the tooling, the parts used for positioning should be equivalent to the environment when the pipe assembly machine is installed to avoid interference when installing the finished pipe group;

[0053] 4. Establish a digital model environment, determine the installation and positioning dimensions, control the air pipe of the previously installed pipe fittings in column A, design the spatial shape and interface dimensions, realize CNC bending of pipe fittings, and control the coordinate accuracy of the external spatial points of multiple pipe fittings on the composite tooling. The internal pipe joint error is eliminated during the manufacturing of the pipe fittings in the tooling.

[0054] The utility model assembles the diesel engine starting air pipe group by making a composite tooling, realizes the coordinated control of the interface positions of multiple spatial points in the manufacturing and verification stages; eliminates the negative impact of welding deformation on the spatial position of pipe fittings; reduces the operation time at high altitudes and narrow spaces, reduces the work intensity, and improves the safety of installation; the pipe fittings have a reasonable direction, eliminates the phenomenon of on-site piping, realizes the accuracy of workshop manufacturing and verification installation of various pipe fittings, and avoids the influence of the cumulative tolerance of pipe fitting connections on the installation accuracy.

[0055] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0056] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A composite manufacturing tool for a diesel engine starting air pipe assembly, which is a tool for composite assembly of multiple pipes in a diesel engine starting air pipe assembly (8), and is characterized by: The tool base (1) comprises a tool base, wherein the left and right ends of the upper part of the tool base (1) are respectively provided with a main pipe left pipe opening positioning support (2) and a main pipe right pipe opening positioning support (3) for positioning the two ends of the main air distribution pipe (8-1) according to the spatial structural positions of the two end pipe openings of the main air distribution pipe (8-1) in the starting air pipe group (8); a plurality of main pipe linear supports (4) for supporting the main air distribution pipe (8-1) are evenly distributed along the length direction on one side of the upper part of the tool base (1); A plurality of cylinder connection piece positioning supports (5) for positioning the cylinder head air intake pipes (8-3), the cylinder head control air intake pipes (8-4) and the positioning connection blocks (8-5) correspondingly connected to the cylinder heads (8-2); a starting air pipe end positioning support (6) for positioning the ports of a plurality of starting air pipes (8-7) is provided at the right end of the upper portion of the tooling base (1); and a plurality of pipe clamp positioning supports (7) for positioning the positioning pipe clamps (8-6) are evenly distributed along the length direction on the upper portion of the tooling base (1).

2. The diesel engine starting air pipe assembly composite manufacturing tooling according to claim 1 is characterized in that: The main pipe left pipe opening positioning support (2) comprises a left pipe opening L-shaped positioning support plate (2-1), the horizontal plate of the left pipe opening L-shaped positioning support plate (2-1) is fixedly connected to the tooling base (1) by screws, the vertical plate and the horizontal plate of the left pipe opening L-shaped positioning support plate (2-1) are connected by a left pipe opening reinforcement plate (2-2), and the vertical plate of the left pipe opening L-shaped positioning support plate (2-1) is provided with a positioning hole and a connection hole for positioning and connecting the left pipe opening according to the spatial position of the left pipe opening of the air distribution main pipe (8-1).

3. The diesel engine starting air pipe assembly composite manufacturing tooling according to claim 1 is characterized in that: The main pipe right pipe outlet positioning support (3) comprises a right pipe outlet L-shaped positioning support plate (3-1), the horizontal plate of the right pipe outlet L-shaped positioning support plate (3-1) is fixedly connected to the tooling base (1) by screws, the vertical plate and the horizontal plate of the right pipe outlet L-shaped positioning support plate (3-1) are connected by a right pipe outlet reinforcement plate (3-2), and the vertical plate of the right pipe outlet L-shaped positioning support plate (3-1) is provided with a positioning hole and a connection hole for positioning and connecting it according to the spatial position of the right pipe outlet of the air distribution main pipe (8-1).

4. The diesel engine starting air pipe assembly composite manufacturing tooling according to claim 1 is characterized in that: The main pipeline linear support (4) comprises a main pipeline linear support rod (4-1), the lower portion of which is fixedly connected to a tooling base (1) via screws, and the upper end of the main pipeline linear support rod (4-1) is fixed with an arc support plate (4-2) for supporting the lower portion of the outer wall of the air distribution main pipe (8-1).

5. The diesel engine starting air pipe assembly composite manufacturing tooling according to claim 1 is characterized in that: Each of the cylinder connection parts positioning supports (5) comprises a support base plate (5-1), the support base plate (5-1) being fixedly connected to the tooling base (1) by means of screws, a cylinder connection part positioning plate (5-2) being vertically arranged on the upper part of the support base plate (5-1), the cylinder connection part positioning plate (5-2) being fixedly connected to the support base plate (5-1) by means of a positioning plate reinforcement plate (5-3), a positioning hole and a connection hole for positioning and connecting them respectively on the cylinder connection part positioning plate (5-2) according to the spatial positions of the cylinder head intake pipe (8-3), the cylinder head control intake pipe (8-4) and the positioning connection block (8-5), and a pipe interface support block (5-4) for supporting the corresponding air pipe interface is arranged on the support base plate (5-1) according to the structural position of the air pipe interface on the air distribution main pipe (8-1) for connecting to each cylinder.

6. The diesel engine starting air pipe assembly composite manufacturing tooling according to claim 1 is characterized in that: The starting air pipe end positioning support (6) comprises an L-shaped pipe end positioning plate (6-1) for flush positioning the end surfaces of a plurality of starting air pipes (8-7); a horizontal plate at the bottom of the L-shaped pipe end positioning plate (6-1) is fixedly connected to the tooling base (1) by screws; a pipe end support block (6-2) is provided on the left side of the L-shaped pipe end positioning plate (6-1); the pipe end support block (6-2) is fixedly connected to the tooling base (1) by screws; and a pipe end lower pressure block (6-3), a pipe end middle pressure block (6-4), a pipe end lower pressure block (6-5), a pipe end lower pressure block (6-6), a pipe end lower pressure block (6-7), a pipe end lower pressure block (6-8), a pipe end lower pressure block (6-9), a pipe end lower pressure block (6-10), a pipe end lower pressure block (6-11), a pipe end lower pressure block (6-12), a pipe end lower pressure block (6-13), a pipe end lower pressure block (6-14), a pipe end lower pressure block (6-15), a pipe end lower pressure block (6-16), a pipe end lower pressure block (6-17), a pipe end lower pressure block (6-18), a pipe end lower pressure block (6-19), a pipe end lower pressure block (6-22), a pipe end lower pressure block (6-23), a pipe end lower pressure block (6-3), a pipe end lower pressure block (6-4), a pipe end lower pressure block (6-4), a pipe end lower pressure block (6-5), a pipe end lower pressure block (6-5), a pipe end lower pressure block (6-6), a pipe end lower pressure block (6-6), a pipe end lower pressure block (6-6), a pipe end lower pressure block (6-6), a pipe end lower pressure block (6-7), a pipe end lower pressure block (6-7), a pipe end lower pressure block (6-7), a pipe end lower pressure block (6-7), a pipe end lower pressure block (6-7), The upper pressure block (6-5) at the end, the lower pressure block (6-3) at the end of the tube and the middle pressure block (6-4) at the end of the tube, and the middle pressure block (6-4) at the end of the tube and the upper pressure block (6-5) at the end of the tube are all used to press the ends of multiple starting air tubes (8-7). The corresponding positions of the pressing surfaces of the lower pressure block (6-3) at the end of the tube, the middle pressure block (6-4) at the end of the tube, and the upper pressure block (6-5) at the end of the tube are all provided with arc grooves adapted to the outer circumferential surface of the starting air tube (8-7). The lower pressure block (6-3) at the end of the tube, the middle pressure block (6-4) at the end of the tube, and the upper pressure block (6-5) at the end of the tube are connected together by screws.

7. The diesel engine starting air pipe assembly composite manufacturing tooling according to claim 1 is characterized by: The pipe clamp positioning support (7) comprises a pipe clamp support rod (7-1), the lower part of which is fixedly connected to the tooling base (1) by means of screws, and the upper end of the pipe clamp support rod (7-1) is fixed with a pipe clamp support plate (7-2) for supporting the positioning pipe clamp (8-6), and the pipe clamp support plate (7-2) is arranged as an inclined support plate according to the spatial installation structure of the positioning pipe clamp (8-6).

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