Machining method and milling tool for mounting bracket of tube nest radiator with special-shaped structure

Abstract

The invention discloses a machining method and a milling tool for a mounting bracket of a special-shaped structure tube radiator. Comprising a right end plate, a right top plate, a right pressing block, a large V-shaped block, a right transverse plate, a right screw rod, a first positioning mandrel, a right top rod, a first positioning check block, a round nut, a second positioning check block, a second positioning mandrel, a bottom plate, a small V-shaped block, a left pressing block, a left transverse plate, a left screw rod, a left top plate, a left top rod and a left end plate. The machining method is matched with a milling tool, rapid clamping and accurate positioning of the special-shaped structure shell and tube radiator installation support are achieved, the consistency of product machining quality is guaranteed, interchangeability of products is achieved, and the machining efficiency and quality of the products are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of numerical control milling processing of fuel and lubricating oil accessories of aircraft engines and relates to tube-type fuel and lubricating oil radiators, and specifically relates to a processing method for a mounting bracket of a tube-type radiator with a special structure and a milling tool used therefor. Background Art

[0002] The tube radiator is an important component of the aircraft engine oil system. Its main function is to cool the high-temperature oil by using the low-temperature fuel to reduce the oil temperature. The product is usually connected by argon arc welding with the mounting bracket, core assembly and fuel and oil inlet and outlet assemblies. The main processing techniques of the product include argon arc welding, vacuum brazing, sheet metal forming, machining and heat treatment.

[0003] The installation dimensions of the special-shaped tube radiator are generally machined after welding. Before welding, the positioning process holes are reserved on the mounting bracket, and the mounting surface is reserved for machining allowance. The mounting bracket is positioned by a welding fixture during the processing, and then the welding process is completed. The mounting holes and mounting surfaces of the mounting bracket are then milled (see the schematic diagram of the special-shaped tube radiator to be processed for the mounting bracket). Fig.21 ).

[0004] During the milling process after the bracket is welded, the following problems mainly exist:

[0005] (1) Before milling, it is difficult to clamp and "level" the special-shaped tube radiator;

[0006] (2) During the milling process, some mounting brackets were "missing meat" and could not meet the processing requirements;

[0007] (3) After milling, the core assembly and the oil inlet and outlet connections are misaligned;

[0008] (4) Milling processing has low efficiency and high risks, which seriously affects product delivery requirements.

[0009] Based on the above problems, it is urgent to develop an effective processing method to overcome the above problems (1) to (4). Summary of the invention

[0010] The present invention aims to provide a processing method and a milling tool for a mounting bracket of a special-shaped tube radiator, which can improve product quality and processing efficiency through one-time rapid clamping and positioning of the milling tool, thereby meeting processing requirements.

[0011] To achieve the above object, the present invention adopts the following technical solutions:

[0012] A milling tool for mounting bracket of a special-shaped tube radiator, comprising:

[0013] A bottom plate, the bottom plate comprising a surface E and a surface F that are perpendicular to each other;

[0014] A right end plate and a left end plate, wherein the right end plate and the left end plate are detachably connected to the right end and the left end in the length direction of the bottom plate, and the right end plate and the left end plate are parallel to each other and perpendicular to the bottom plate, and a space for placing a special-shaped tube radiator is formed between the right end plate, the left end plate and the bottom plate;

[0015] A right top plate and a left top plate, wherein the right top plate and the left top plate are located between the right end plate and the left end plate, and the right top plate is movably connected to the right end plate, and the left top plate is movably connected to the left end plate, and an axial clamping space of a special-shaped tube radiator is formed between the right top plate and the left top plate;

[0016] A right pressing block and a left pressing block, wherein the surfaces of the right pressing block and the left pressing block include arc-shaped surfaces, and the right pressing block and the left pressing block are pressed at different positions on the circumferential surface of the special-shaped tube radiator through the arc-shaped surfaces;

[0017] A positioning mandrel, wherein the positioning mandrel is installed on the bottom plate, and the positioning mandrel is inserted into the process holes of the mounting bracket I and the mounting bracket II of the special-shaped tube radiator, and the mounting bracket I and the mounting bracket II of the special-shaped tube radiator are fixed by a round nut connected to the end of the positioning mandrel;

[0018] The V-shaped block includes a V-shaped block installed on the bottom plate and between the right top plate and the left top plate. The surface of the V-shaped block is provided with a V-shaped groove, which serves as a supporting surface for the circumferential surface of the special-shaped tube radiator.

[0019] Furthermore, the milling tool for mounting bracket of special-shaped tube radiator also includes:

[0020] A right transverse plate and a left transverse plate, wherein the first end of the right transverse plate is connected to the right pressing block, and the second end is connected to the upper end of the right top rod; the first end of the left transverse plate is connected to the left pressing block, and the second end is connected to the upper end of the left top rod; and through grooves are formed on the right transverse plate and the left transverse plate;

[0021] A right screw rod and a left screw rod, wherein the upper end of the right screw rod is connected to the through slot of the right horizontal plate, and the lower end is connected to the bottom plate; the upper end of the left screw rod is connected to the through slot of the left horizontal plate, and the lower end is connected to the bottom plate.

[0022] Furthermore, the milling tool for mounting bracket of special-shaped tube radiator also includes:

[0023] A first positioning block, which is detachably connected to the bottom plate through a pin and a screw, and a first positioning mandrel is detachably connected to the first positioning block through a hole-shaft fit, and the first positioning mandrel passes through a process hole of a mounting bracket I on the special-shaped tube radiator and is connected to a round nut;

[0024] The second positioning block is detachably connected to the base plate through pins and screws, and the second positioning block is detachably connected to the second positioning mandrel through a hole-axis fit, and the second positioning mandrel passes through the process hole of the mounting bracket II on the special-shaped tube radiator and is connected to the round nut.

[0025] Furthermore, the V-block includes a large V-block and a small V-block, which are installed on the bottom plate at intervals and between the right top plate and the left top plate. The surfaces of the large V-block and the small V-block are both provided with V-shaped grooves, which serve as supporting surfaces for the circumferential surface of the special-shaped tube radiator.

[0026] further,

[0027] The right end plate and the left end plate are connected to the bottom plate by pins and screws;

[0028] The V-shaped block is connected to the bottom plate through pins and screws.

[0029] Furthermore, threaded holes are formed on the right end plate and the left end plate, and the right top plate and the left top plate are respectively connected to the threaded holes of the right end plate and the left end plate through threads, so that the distance between the right top plate and the left top plate is adjustable.

[0030] Furthermore, the lower end of the right top rod is connected to the bottom plate, and the lower end of the left top rod is connected to the bottom plate.

[0031] Furthermore, the first positioning mandrel and the first positioning stopper are clearance fit, and the second positioning mandrel and the second positioning stopper are clearance fit.

[0032] A method for processing a mounting bracket of a special-shaped tube radiator adopts the above-mentioned milling tool and comprises the following steps:

[0033] Step 1: Fix the milling tool to the machine tool, ensure that the surface F of the bottom plate fits the worktable of the machine tool, place the special-shaped tube radiator on the V-shaped groove of the V-shaped block in the milling tool, insert the positioning mandrel into the process holes of the mounting bracket I and mounting bracket II, and tighten it with a round nut to preliminarily fix the special-shaped tube radiator on the milling tool;

[0034] Step 2: By adjusting the distance between the right top plate and the left top plate, the right top plate and the left top plate form an axial clamping on the axial end surface of the special-shaped tube radiator;

[0035] Step 3, adjusting the positions of the right pressing block and the left pressing block so that the arc-shaped surfaces on the right pressing block and the left pressing block are pressed and fixed to the circumferential surface of the special-shaped tube heat sink;

[0036] Step 4: Remove the positioning mandrel to make room for processing the mounting bracket of the special-shaped tube radiator;

[0037] Step 5: Use the lubricating oil inlet and outlet on the special-shaped tube radiator as the pre-processing reference of the mounting bracket II, ensure the distance dimension L between the mounting surface M on the mounting bracket II and the lubricating oil inlet and outlet, and the size of the mounting surface M itself, and then use the mounting surface M on the mounting bracket II as the reference to process the mounting surface N on the mounting bracket I, ensure the distance dimension between the mounting surface M and the mounting surface N, and the size of the mounting surface N itself, and then simultaneously complete the relevant dimension processing of the remaining mounting surfaces on the mounting bracket I, mounting bracket II and mounting bracket III;

[0038] Step 6: Flip the milling tool and fix it to the machine tool, ensure that the left end plate fits on the machine tool workbench, and complete the processing of the mounting holes on the mounting bracket I;

[0039] Step 7: Flip the milling tool and fix it to the machine tool, ensure that the right end plate fits on the machine tool workbench, and complete the processing of the mounting holes on the mounting bracket II;

[0040] Step 8. Turn over the milling tool and fix it to the machine tool, ensure that the surface E of the base plate fits on the machine tool workbench, and complete the processing of the mounting holes on the mounting bracket III.

[0041] Furthermore, the step 2 also includes using aluminum sheets to fill the contact area between the special-shaped tube radiator and the V-shaped block, thereby filling and eliminating the gap between the two;

[0042] Furthermore, the step eight also includes a step nine, which is to perform a machining process inspection according to the process requirements, remove the machined special-shaped tube radiator from the milling tool of the milling machine, remove machining burrs, and clean it for inspection.

[0043] Compared with the prior art, the present invention has the following characteristics:

[0044] 1. The milling tool for the mounting bracket of the special-shaped tube radiator can complete all the processing contents of the mounting surface and mounting hole of the mounting bracket I, mounting bracket II and mounting bracket III on the special-shaped tube radiator in one clamping, and at the same time ensure the consistency of the welding datum and the machining datum of the special-shaped tube radiator and the accuracy of positioning;

[0045] 2. The milling tool for mounting brackets of special-shaped tube radiators can realize fast and accurate positioning of special-shaped tube radiators, avoiding the situation of "lack of meat" in individual mounting brackets during the milling process;

[0046] 3. The left and right top plates of the milling tool for mounting the bracket of the special-shaped tube radiator are threadedly connected to the left and right end plates, which is convenient for adjustment and clamping of the special-shaped tube radiator, so as to realize the rapid clamping of the special-shaped tube radiator;

[0047] 4. In the milling tool for the mounting bracket of the special-shaped tube radiator, the bottom plate and the left and right end plates are perpendicular to each other, and the upper surface E and surface F of the bottom plate are perpendicular to each other. When the milling tool is turned over to process the mounting holes of each mounting bracket, it is possible to quickly switch to the subsequent processing content without repeated "leveling";

[0048] 5. The processing method of the mounting bracket of the special-shaped tube radiator has been applied in the small-batch production of the mounting bracket of the tube radiator supporting the aircraft engine, with stable quality and high processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 is a schematic diagram of the right end plate;

[0050] Figure 2 It is a schematic diagram of the right top plate;

[0051] Figure 3 It is a schematic diagram of the right pressure block;

[0052] Figure 4 It is a schematic diagram of a large V-shaped block;

[0053] Figure 5 It is a schematic diagram of the right horizontal board;

[0054] Figure 6 It is a schematic diagram of the right screw;

[0055] Figure 7 is a schematic diagram of the first positioning mandrel;

[0056] Figure 8 It is a schematic diagram of the right top rod;

[0057] Fig. 9 is a schematic diagram of a first positioning block;

[0058] Fig.10 It is a schematic diagram of a round nut;

[0059] Fig.11 is a schematic diagram of a second positioning block;

[0060] Fig.12 is a schematic diagram of a second positioning mandrel;

[0061] Fig.13 is a schematic diagram of the base plate;

[0062] Fig.14 It is a schematic diagram of a small V-block;

[0063] Fig.15 It is a schematic diagram of the left pressure block;

[0064] Fig.16 It is a schematic diagram of the left horizontal board;

[0065] Fig.17It is a schematic diagram of the left screw;

[0066] Fig.18 This is the left top plate diagram

[0067] Fig.19 It is a schematic diagram of the left top rod;

[0068] Fig. 20 It is a schematic diagram of the left end plate;

[0069] Fig.21 This is a parts diagram of a special-shaped tube radiator;

[0070] Fig. 22 This is a schematic diagram of the milling tool for the special-shaped tube radiator (assembled state);

[0071] In the figure, 1. right end plate; 2. right top plate; 3. right pressure block; 4. large V-shaped block; 5. right horizontal plate; 6. right screw; 7. first positioning mandrel; 8. right top rod; 9. first positioning stopper; 10. round nut; 11. second positioning stopper; 12. second positioning mandrel; 13. bottom plate; 14. small V-shaped block; 15. left pressure block; 16. left horizontal plate; 17. left screw; 18. left top plate; 19. left top rod; 20 left end plate. DETAILED DESCRIPTION

[0072] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but it should not be understood that the scope of the subject matter described in the present invention is limited to the following embodiments. Without departing from the above-mentioned technical ideas of the present invention, various modifications, substitutions and changes made according to the common technical knowledge and customary means in the field are included in the scope of the present invention.

[0073] like Fig.21 As shown in the figure above, it is a part drawing of a special-shaped tube radiator. On the right side is the fuel inlet and outlet end cover, on the surface of which there are lubricating oil inlet and outlet. There are also three mounting brackets on the surface, including mounting bracket I, mounting bracket II and mounting bracket III, which need to be processed. Since the tube radiator is a curved structure, the three mounting brackets are distributed in different positions. Fig.21 The figure below shows the processing parts drawings of mounting bracket I, mounting bracket II and mounting bracket III, in which the thick lines correspond to the positions that need to be processed, including the mounting surfaces and mounting holes of mounting bracket I, mounting bracket II and mounting bracket III.

[0074] like Figures 1 to 20 , Fig. 22As shown, a milling tool for a mounting bracket of a special-shaped tube radiator designed in this embodiment includes a right end plate 1, a right top plate 2, a right pressure block 3, a large V-shaped block 4, a right cross plate 5, a right screw 6, a first positioning mandrel 7, a right push rod 8, a first positioning stopper 9, a round nut 10, a second positioning stopper 11, a second positioning mandrel 12, a bottom plate 13, a small V-shaped block 14, a left pressure block 15, a left cross plate 16, a left screw 17, a left top plate 18, a left push rod 19 and a left end plate 20.

[0075] like Fig.13 The bottom plate 13 is processed as one piece, and the surface E and the surface F are in a vertical relationship, so as to ensure that the processing surface remains vertical to the bottom surface after the processing of the special-shaped tube radiator is turned over, and no "leveling" is required. At the same time, the first positioning block 9 and the second positioning block 11 can be fixed. The cross-sectional shape of the bottom plate 13 is a broken line, including a first line segment, a second line segment, a third line segment and a fourth line segment, wherein the second line segment corresponds to the surface F, and the fourth line segment corresponds to the surface E. When designing the bottom plate 13, when the special-shaped tube radiator is placed in the milling tool, the mounting surface of the mounting bracket III is perpendicular to the surface F corresponding to the second line segment as a reference, and the angle between the first line segment and the second line segment is adjusted, or the shape of the first positioning block 9 is adjusted, or both are adjusted at the same time, so that when the first positioning block 9 is installed on the bottom plate 13, the first positioning mandrel 7 thereon can be inserted into the process hole of the mounting bracket I. Similarly, when the special-shaped tube radiator is placed into the milling tool, the mounting surface of the mounting bracket III is perpendicular to the surface F corresponding to the second line segment as a reference, and the shape of the second positioning block 11 is adjusted so that the second positioning core shaft 12 can be inserted into the process hole of the mounting bracket II.

[0076] like Figure 1 and Fig. 20 The right end plate 1 and the left end plate 20 are provided with pin holes and threaded holes. After being assembled on the base plate 13, the threaded holes on the right end plate 1 and the left end plate 20 remain coaxial, and the two end surfaces of the right end plate 1 and the left end plate 20 are parallel after being assembled on the base plate 13. The right end plate 1 and the left end plate 20 are connected to the base plate 13 by pins and screws.

[0077] like Figure 4 and Fig.14 The large V-shaped block 4 and the small V-shaped block 14 are of V-shaped structure, and are provided with avoidance grooves according to the structure design of the special-shaped tube radiator, and are connected to the bottom plate 13 by pins and screws.

[0078] like Figure 2 and Fig.18 The right top plate 2 and the left top plate 18 are both designed with screws, which are respectively connected to the right end plate 1 and the left end plate 20 through threads, and the distance adjustment is achieved by screwing the threads.

[0079] like Fig. 9 and Fig.11The first positioning stopper 9 and the second positioning stopper 11 are used to cooperate with the installation of the positioning mandrel (such as Figure 7 and Fig.12 ), are connected to the base plate 13 by pins and screws, and are provided with a positioning mandrel hole to enable the insertion of the positioning mandrel.

[0080] like Figure 5 and Fig.16 , the right horizontal plate 5 and the left horizontal plate 16 are designed with through grooves, which are connected with the right screw 6 ( Figure 6 )、Left screw 17( Fig.17 ) and right pressure block 3 ( Figure 3 ), left pressure block 15( Fig.15 ) assembly, the right pressing block 3 and the left pressing block 15 are installed on the right horizontal plate 5 and the left horizontal plate 16 by screws, and the right pressing block 3 and the left pressing block 15 can be locked in position by the right screw rod 6 and the left screw rod 17 at the through groove. The functions and effects of the above components are as follows:

[0081] Bottom plate 13: the base of the milling tool for mounting bracket of the special-shaped tube radiator, used to support and connect various components;

[0082] The first positioning block 9 and the second positioning block 11 are fixed on the bottom plate 13 by pins and screws, and are mainly used to cooperate with the first positioning mandrel 7 and the second positioning mandrel 12 to fix the mounting bracket I and mounting bracket II of the special-shaped tube radiator, and play a preliminary alignment function;

[0083] The right end plate 1 and the left end plate 20 are fixed to the bottom plate 13 by pins and screws, and are mainly used to support the right top plate 2 and the left top plate 18;

[0084] Large V-shaped block 4 and small V-shaped block 14: fixed to the bottom plate 13 by pins and screws, mainly used to support the special-shaped tube radiator;

[0085] The right top plate 2 and the left top plate 18 are connected to the right end plate 1 and the left end plate 20 through threads, and have the function of adjusting the distance by screwing. The movement is mainly achieved by screwing and adjusting, and the axial support and fixation of the special-shaped tube radiator are performed;

[0086] The right transverse plate 5 and the left transverse plate 16 are connected to the right push rod 8 and the left push rod 19 through threads, and the nuts on the right screw rod 6 and the left screw rod 17 and the right pressing block 3 and the left pressing block 15 are adjusted to tighten and fix the special-shaped tube radiator.

[0087] The core points of the milling tool design of the present invention are the following four aspects:

[0088] 1. When designing the processing plan, the mounting surfaces and mounting holes of mounting brackets I, II and III are reserved with post-welding machining allowances to avoid the risk of "lack of meat" caused by insufficient surface and hole allowances when machining the mounting brackets after welding due to welding deformation; at the same time, when designing the processing plan, the processing sequence and pre-processing benchmarks are clarified to avoid the risk of misalignment between the core assembly and the lubricating oil inlet and outlet connections.

[0089] 2. When formulating the machining plan after welding of mounting bracket I, mounting bracket II and mounting bracket III, first design a special milling tool in combination with the positioning method during welding to ensure that mounting bracket I, mounting bracket II and mounting bracket III are consistent with their welding positioning method, and the first positioning block 9 and the second positioning block 11 The first positioning mandrel 7 and the second positioning mandrel 12 are coordinated with the welding positioning mandrel.

[0090] 3. In the milling tool for the mounting bracket of the special-shaped tube radiator, the right top plate 2 and the left top plate 18 are threadedly connected to the right end plate 1 and the left end plate 20. When the special-shaped tube radiator is clamped, after the first positioning mandrel 7 and the second positioning mandrel 12 in the first positioning block 9 and the second positioning block 11 and the welding positioning mandrel complete the preliminary positioning of the mounting bracket I and the mounting bracket II of the special-shaped tube radiator, the right top plate 2 and the left top plate 18 can be screwed for adjustment and support.

[0091] 4. When designing the milling tool for the mounting bracket of the special-shaped tube radiator, the right end plate 1 and the left end plate 20 are kept perpendicular to the bottom plate 13, the left end plate 2 and the right end plate 3 are parallel to each other, and the bottom plate 13 is processed as one piece, and its surface E and surface F are in a vertical relationship to ensure that the processing surface and the bottom surface remain perpendicular after the special-shaped tube radiator is turned over during the processing, and no "leveling" is required to quickly switch to the subsequent processing content.

[0092] The processing method of the mounting bracket of the special-shaped tube radiator using the above-mentioned milling tool comprises the following steps:

[0093] Step 1: fix the milling tool to the machine tool, ensure that the surface F of the bottom plate 13 fits the worktable of the machine tool, place the special-shaped tube radiator on the V-shaped grooves of the large V-shaped block 4 and the small V-shaped block 14 in the milling tool, insert the first positioning mandrel 7 and the second positioning mandrel 12 into the process holes of the mounting bracket I and the mounting bracket II, and tighten them with the round nut 10 to preliminarily fix the special-shaped tube radiator on the milling tool. At this time, the mounting surface of the mounting bracket III is just perpendicular to the surface F of the bottom plate 13;

[0094] Step 2: Rotate and adjust the right top plate 2 and the left top plate 18 to support the axial end surface of the special-shaped tube radiator, and fill and eliminate the gap between the contact part of the special-shaped tube radiator and the large V-shaped block 4 and the small V-shaped block 14 by using aluminum sheets or the like;

[0095] Step 3: Adjust the nuts on the upper ends of the right screw 6 and the left screw 17 to lock the positions of the right pressing block 3 and the left pressing block 15, so that the arc-shaped surfaces on the right pressing block 3 and the left pressing block 15 are clamped and fixed to the special-shaped tube radiator;

[0096] Step 4: remove the first positioning mandrel 7 and the second positioning mandrel 12 and the first positioning stopper 9 and the second positioning stopper 11 to make room for processing the mounting bracket I and mounting bracket II of the special-shaped tube radiator;

[0097] Step 5: Fig.21 As shown, the lubricating oil inlet and outlet are used as the pre-processing reference of the mounting surface M on the mounting bracket II to ensure the size L of the lubricating oil inlet and outlet and the size of the mounting surface M itself, and then the mounting surface M of the mounting bracket II is used as the reference for processing to ensure the size between the mounting surface M and the mounting surface N on the mounting bracket I and the size of the mounting surface N itself, and then the relevant size processing of the remaining mounting surfaces on the mounting bracket I, mounting bracket II and mounting bracket III is completed synchronously;

[0098] Step 6: Flip the milling tool and fix it to the machine tool, ensure that the left end plate 20 fits on the machine tool workbench, and complete the processing of the mounting holes on the mounting bracket I;

[0099] Step 7: Flip the milling tool and fix it to the machine tool, ensure that the right end plate 1 fits on the machine tool workbench, and complete the processing of the mounting holes on the mounting bracket II;

[0100] Step 8, flip the milling tool and fix it to the machine tool, ensure that the surface E of the base plate 13 fits on the machine tool workbench, and complete the processing of the mounting holes on the mounting bracket III;

[0101] Step nine, perform machining process inspection according to process requirements, complete machining, remove the processed special-shaped tube radiator from the milling machine fixture, remove machining burrs, and clean it for inspection.

[0102] The processing method of the mounting bracket of the special-shaped tube radiator of the present invention mainly uses a milling tool to quickly and accurately position the special-shaped tube radiator, determine the processing reference, and simultaneously realize one-time clamping processing of the mounting hole and the mounting surface of the mounting bracket.

[0103] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A milling tool for mounting bracket of special-shaped tube radiator, characterized in that: include: A bottom plate (13), wherein the bottom plate (13) comprises a surface E and a surface F which are perpendicular to each other; A right end plate (1) and a left end plate (20), wherein the right end plate (1) and the left end plate (20) are detachably connected to the right end and the left end of the bottom plate (13) in the length direction, and the right end plate (1) and the left end plate (20) are parallel to each other and perpendicular to the bottom plate (13), and a space for accommodating a special-shaped tube radiator is formed between the right end plate (1), the left end plate (20) and the bottom plate (13); A right top plate (2) and a left top plate (18), wherein the right top plate (2) and the left top plate (18) are located between the right end plate (1) and the left end plate (20), and the right top plate (18) is movably connected to the right end plate (1), and the left top plate (18) is movably connected to the left end plate (20), and an axial clamping space of a special-shaped tube radiator is formed between the right top plate (2) and the left top plate (18); A right pressing block (3) and a left pressing block (15), wherein the surfaces of the right pressing block (3) and the left pressing block (15) include arc-shaped surfaces, and the right pressing block (3) and the left pressing block (15) are pressed at different positions on the circumferential surface of the special-shaped tube-and-tube radiator through the arc-shaped surfaces; A positioning mandrel, the positioning mandrel being mounted on a bottom plate (13), and the positioning mandrel being inserted into process holes of mounting bracket I and mounting bracket II of the special-shaped tube radiator, and fixing mounting bracket I and mounting bracket II of the special-shaped tube radiator via a round nut (10) connected to the end of the positioning mandrel; The V-shaped block comprises a V-shaped block installed on a bottom plate (13) and between a right top plate (2) and a left top plate (18), wherein a V-shaped groove is provided on the surface of the V-shaped block, and the V-shaped groove serves as a supporting surface for the circumferential surface of the special-shaped tube radiator.

2. A milling tool for mounting bracket of a special-shaped tube radiator according to claim 1, characterized in that: Also includes: A right transverse plate (5) and a left transverse plate (16), wherein the first end of the right transverse plate (5) is connected to the right pressure block (3), and the second end is connected to the upper end of the right push rod (8); the first end of the left transverse plate (16) is connected to the left pressure block (15), and the second end is connected to the upper end of the left push rod (19); and through grooves are formed on the right transverse plate (5) and the left transverse plate (16); A right screw rod (6) and a left screw rod (17), wherein the upper end of the right screw rod (6) is connected to the through groove of the right horizontal plate (5), and the lower end is connected to the bottom plate (13); the upper end of the left screw rod (17) is connected to the through groove of the left horizontal plate (16), and the lower end is connected to the bottom plate (13).

3. The milling tool for mounting bracket of a special-shaped tube radiator according to claim 1, characterized in that: Also includes: A first positioning block (9), the first positioning block (9) is detachably connected to the bottom plate (13) by means of a pin and a screw, a first positioning mandrel (7) is detachably connected to the first positioning block (9) by means of a hole-shaft fit, and the first positioning mandrel (7) passes through a process hole of a mounting bracket I on the special-shaped tube radiator and is connected to a round nut (10); A second positioning block (11), the second positioning block (11) is detachably connected to the base plate (13) through pins and screws, the second positioning block (11) is detachably connected to a second positioning mandrel (12) through hole-shaft cooperation, the second positioning mandrel (12) penetrates the process hole of the mounting bracket II on the special-shaped tube radiator and is connected to the round nut (10).

4. The milling tool for mounting bracket of a special-shaped tube radiator according to claim 1, characterized in that: The V-shaped block comprises a large V-shaped block (4) and a small V-shaped block (14). The large V-shaped block (4) and the small V-shaped block (14) are installed on the bottom plate (13) at intervals and between the right top plate (2) and the left top plate (18). The surfaces of the large V-shaped block (4) and the small V-shaped block (14) are both provided with V-shaped grooves, which serve as supporting surfaces for the circumferential surface of the special-shaped tube radiator.

5. The milling tool for mounting bracket of a special-shaped tube radiator according to claim 1, characterized in that: The right end plate (1) and the left end plate (20) are both connected to the bottom plate (13) by pins and screws; The V-shaped block is connected to the bottom plate (13) via pins and screws.

6. The milling tool for mounting bracket of a special-shaped tube radiator according to claim 1, characterized in that: The right end plate (1) and the left end plate (20) are provided with threaded holes, and the right top plate (2) and the left top plate (18) are respectively connected to the threaded holes of the right end plate (1) and the left end plate (20) by threads, so that the distance between the right top plate (2) and the left top plate (18) is adjustable.

7. The milling tool for mounting bracket of a special-shaped tube radiator according to claim 2, characterized in that: The lower end of the right top rod (8) is connected to the bottom plate (13), and the lower end of the left top rod (19) is connected to the bottom plate (13).

8. The milling tool for mounting bracket of a special-shaped tube radiator according to claim 3, characterized in that: The first positioning core shaft (7) and the first positioning stop block (9) are clearance-fitted, and the second positioning core shaft (12) and the second positioning stop block (11) are clearance-fitted.

9. A method for processing a mounting bracket of a special-shaped tube radiator, characterized in that: The milling tool according to claim 1 is used, and comprises the following steps: Step 1: fix the milling tool to the machine tool, ensure that the surface F of the bottom plate (13) fits the working table of the machine tool, place the special-shaped tube heat sink on the V-shaped groove of the V-shaped block in the milling tool, insert the positioning mandrel into the process holes of the mounting bracket I and the mounting bracket II, and tighten it with a round nut (10) to preliminarily fix the special-shaped tube heat sink on the milling tool; Step 2: adjusting the distance between the right top plate (2) and the left top plate (18) so that the right top plate (2) and the left top plate (18) form an axial clamping on the axial end surface of the special-shaped tube radiator; Step three, adjusting the positions of the right pressing block (3) and the left pressing block (15) so that the arc-shaped surfaces on the right pressing block (3) and the left pressing block (15) are pressed and fixed to the circumferential surface of the special-shaped tube heat sink; Step 4: Remove the positioning mandrel to make room for processing the mounting bracket of the special-shaped tube radiator; Step 5: Use the lubricating oil inlet and outlet on the special-shaped tube radiator as the pre-processing reference of the mounting bracket II, ensure the distance dimension L between the mounting surface M on the mounting bracket II and the lubricating oil inlet and outlet, and the size of the mounting surface M itself, and then use the mounting surface M on the mounting bracket II as the reference to process the mounting surface N on the mounting bracket I, ensure the distance dimension between the mounting surface M and the mounting surface N, and the size of the mounting surface N itself, and then simultaneously complete the relevant dimension processing of the remaining mounting surfaces on the mounting bracket I, mounting bracket II and mounting bracket III; Step 6: Flip the milling tool and fix it to the machine tool, ensure that the left end plate (20) fits on the machine tool workbench, and complete the processing of the mounting holes on the mounting bracket I; Step 7: Turn over the milling tool and fix it to the machine tool, ensure that the right end plate (1) fits on the machine tool workbench, and complete the processing of the mounting holes on the mounting bracket II; Step 8, turn over the milling tool and fix it to the machine tool, ensure that the surface E of the bottom plate (13) fits on the machine tool workbench, and complete the processing of the mounting holes on the mounting bracket III.

10. The method for processing a mounting bracket of a special-shaped tube radiator according to claim 9, characterized in that: The step 2 also includes using aluminum sheets to fill the contact area between the special-shaped tube radiator and the V-shaped block, thereby filling and eliminating the gap between the two; The step 8 also includes a step 9, which is to perform a machining process inspection according to the process requirements, remove the machined special-shaped tube radiator from the milling tool of the milling machine, remove the machining burrs, and clean it for inspection.

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