Clamp for machining automobile exhaust manifold

Abstract

The invention discloses a clamp for machining an automobile exhaust manifold, and relates to the technical field of automobile part machining. The exhaust manifold comprises a clamp mechanism and a manifold body, the manifold body comprises an exhaust main pipe, a plurality of exhaust branch pipes are fixedly installed at one end of the exhaust main pipe, a main pipe assembly disc is fixedly installed at the other end of the exhaust main pipe, and branch pipe assembly discs are fixedly installed at the other ends of the exhaust branch pipes; a plurality of assembling holes are formed in the side wall of the main pipe assembling disc and the side wall of the branch pipe assembling disc. By arranging the clamp mechanism, a manifold body is firstly taken to the top of the clamp mechanism, exhaust branch pipes are downwards connected to the multiple three-finger clamps in a sleeving mode, the three-finger clamps drive the pneumatic clamping jaws to be away from one another and clamp the manifold body from the interior, and therefore the manifold body is fixedly clamped on the clamp table; the manifold body is integrally fixed in the mode that the exhaust branch pipes are fixedly clamped, operation is easy, clamping is stable, and the exhaust main pipe can be conveniently machined.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts processing, in particular to a clamp for processing an automobile exhaust manifold. Background Art

[0002] The exhaust manifold is a component that is closely connected to the engine cylinder block. Its core responsibility is to collect the exhaust gas from each cylinder and guide them to the exhaust main pipe. The exhaust manifold is usually equipped with a forked pipe to ensure the smooth discharge of the exhaust gas. The exhaust manifold includes an exhaust main pipe and multiple exhaust branch pipes connected to the exhaust main pipe. The end faces of the multiple exhaust branch pipes will be connected together to form the large surface of the exhaust manifold. When designing the exhaust manifold, the focus is on reducing the exhaust resistance while preventing mutual interference between the cylinders.

[0003] When processing the exhaust manifold, the inner and outer circles of the exhaust main pipe need to be milled, polished, etc. During the processing, a fixture is used to stably clamp the exhaust manifold. At present, when the fixture used for processing the exhaust main pipe is used, in order to match the complex shape of the exhaust manifold, the fixture needs to be clamped at multiple points, which is not only cumbersome to operate, but also has low clamping stability, and the exhaust manifold is prone to shaking and offset during processing. Therefore, a fixture for processing automobile exhaust manifolds is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the current clamp used for processing exhaust main pipes needs to be clamped at multiple points to match the complex shape of the exhaust manifold, which is not only cumbersome to operate, but also has low clamping stability, and is prone to causing the exhaust manifold to shake and deviate during processing. The present invention provides a clamp for processing automobile exhaust manifolds.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: A fixture for processing an automobile exhaust manifold comprises a fixture mechanism and a manifold body, wherein the manifold body comprises an exhaust main pipe, a plurality of exhaust branch pipes are fixedly mounted on one end of the exhaust main pipe, a main pipe assembly plate is fixedly mounted on the other end of the exhaust main pipe, and a branch pipe assembly plate is fixedly mounted on the other end of each exhaust branch pipe, wherein a plurality of assembly holes are provided on the side walls of the main pipe assembly plate and the branch pipe assembly plate; The clamp mechanism comprises a clamp table, a main slide rail is fixedly installed on the top of the clamp table, a plurality of main slide tables are slidably installed on the top of the main slide rail, a clamp main bracket is fixedly installed on the top of each main slide table, an assembly round table is fixedly installed on the top of each main bracket of the clamp, a three-finger clamp is fixedly installed on the top of each assembly round table, three evenly distributed pneumatic clamps are driven and installed on the top of each three-finger clamp, and a distance adjustment component is provided between any two of the clamp main brackets; The distance adjustment component is used to adjust the overall position of the three-finger clamp, and the distance adjustment component includes two adjusting screw barrels respectively fixedly installed on the side close to each other of any two adjacent clamp main brackets, the two adjusting screw barrels are internally threaded with the same double-headed screw, and the double-headed screw is fixedly sleeved with an adjusting rotating ring, and a linear guide rail parallel to the two main slide rails is fixedly installed on the top of the clamp table, an electric slider is driven and installed on the top of the linear guide rail, and a positioning rod is fixedly installed on the top of the electric slider, and a plurality of the clamp main brackets are located between the two positioning rods.

[0006] Furthermore, an assembly ring is fixedly sleeved on the assembly circular table, a lower positioning plate is fixedly installed on the top of the assembly ring, and a plurality of positioning rods matched with the assembly holes are fixedly installed on the top of the lower positioning plate.

[0007] Furthermore, a plurality of evenly distributed hydraulic lifting rods are fixedly installed on the top of the clamp table, and the hydraulic lifting rods are all vertically arranged, and the telescopic ends of the hydraulic lifting rods are all facing upward and fixedly installed with the same secondary slide rail, and a plurality of evenly distributed secondary slides are slidably installed on the top of the secondary slide, and a clamp secondary bracket is fixedly installed on the top of the clamp secondary bracket, and an upper positioning plate is fixedly installed on the top of the upper positioning plate, and a positioning cap matched with the positioning plug rod is fixedly installed on the bottom of the upper positioning plate, and a linkage frame is fixedly installed on one side of the secondary slide, and the bottom ends of the plurality of linkage frames are respectively slidably installed on the plurality of clamp main brackets.

[0008] Furthermore, a lower screw hole is provided on the side wall of the assembly ring, a lower fastening bolt group is passed through the interior of the lower screw hole, the assembly ring is fixedly connected to the assembly cone through the lower fastening bolt group, and an upper screw hole is provided on the upper positioning plate, the upper positioning plate is fixedly connected to the clamp sub-bracket through the upper fastening bolt group.

[0009] Furthermore, a distance measuring baffle is fixedly mounted on one side of one of the clamp sub-brackets, and a laser rangefinder is fixedly mounted on one side of the other clamp sub-brackets, and the positions of the multiple laser rangefinders correspond to the positions of the distance measuring baffle.

[0010] Furthermore, protective sleeves are fixedly installed on both sides of the adjusting rotary ring, and the two protective sleeves are movably sleeved on the two adjusting screw barrels respectively. Lubrication holes are opened on the side walls of the protective sleeves, and sealing plug caps are inserted into the lubrication holes.

[0011] Furthermore, one end of the three pneumatic clamps that is away from each other is fixedly mounted with an assembly screw, and an assembly top block is screwed onto the assembly screw.

[0012] Furthermore, the assembly top blocks are all sleeved with rubber caps.

[0013] The beneficial effects of the present invention are as follows: 1. The present invention sets a clamp mechanism so that the manifold body is first taken to the top of the clamp mechanism, and the exhaust branch pipe is sleeved on a plurality of three-finger clamps with the exhaust branch pipe facing downward. The three-finger clamp drives the pneumatic clamps to move away from each other and clamp the manifold body from the inside, so that the manifold body is fixedly clamped on the clamp table. The manifold body is fixed as a whole by fixing and clamping the exhaust branch pipes separately. The operation is simple, the clamping is stable, and the exhaust main pipe is convenient for processing. 2. The present invention sets a distance adjustment component, so that when it is necessary to clamp the manifold bodies of different models, each adjustment ring can be rotated to make the positions of multiple three-finger clamps correspond to the positions of the new exhaust branch pipes, and finally control the two electric sliders to drive the positioning rods to clamp on one side of the two outermost clamp main brackets, fix the overall position of the three-finger clamp, and realize the position adjustment of the clamp mechanism, so that the automobile exhaust manifold processing clamp has a certain versatility; 3. The present invention provides positioning rods so that when the manifold body is placed on the fixture mechanism, one end of the plurality of exhaust pipes will be located on the top of the plurality of lower positioning plates, and the plurality of positioning rods on the lower positioning plates will be automatically inserted into the interior of each assembly hole as the exhaust pipes are docked with the three-finger fixture, thereby playing a role in initial positioning of the manifold body, so that the manifold body stands on each lower positioning plate, and the three-finger fixture drives the pneumatic clamp to clamp the exhaust pipe internally; 4. The present invention provides an upper positioning plate, so that after the three-finger clamp drives the pneumatic clamp to clamp each exhaust branch pipe internally, multiple hydraulic lifting rods will simultaneously drive the lower positioning plate and the upper positioning plate to clamp each branch pipe assembly plate up and down, thereby achieving external clamping of the manifold body, making the clamping of the manifold body more stable, so that the processing equipment can apply a larger load to the exhaust main pipe without affecting the clamping state of the clamp mechanism on the manifold body; 5. The present invention provides a lower fastening bolt group and an upper fastening bolt group, so that the assembly ring and the upper positioning plate are fixedly connected to the assembly round table and the laser rangefinder through the lower fastening bolt group and the upper fastening bolt group, respectively, which facilitates the disassembly and reassembly of the assembly ring and the upper positioning plate, so that the assembly ring, the lower positioning plate, the positioning plug rod, the upper positioning plate, and the positioning cap can be quickly replaced according to the specifications and appearance of the manifold body, further improving the application range of the fixture for processing automobile exhaust manifolds; 6. The present invention sets a laser rangefinder so that when the spacing and position of each three-finger clamp are adjusted by the distance adjustment component, the multiple clamp sub-brackets on one side will always keep synchronous movement with the clamp main bracket through the linkage frame at the bottom, that is, the spacing of the clamp sub-brackets is consistent with the spacing of the clamp main bracket, and the laser rangefinder will emit laser to the laser rangefinder or the distance measuring baffle on one side and accurately display the spacing of the two clamp sub-brackets, so as to facilitate the precise control of the spacing of the three-finger clamp; 7. The present invention provides a protective sleeve so that the protective sleeve can cover the double-headed screw to prevent dust and moisture, and prevent the meshing transmission of the adjusting screw barrel and the double-headed screw from being stagnant due to rust, dust and other problems. At the same time, the sealing plug cap can be opened regularly, and lubricating oil can be dripped into the interior of the protective sleeve through the lubrication hole to lubricate and maintain the double-headed screw and the adjusting screw barrel, thereby extending the service life of the two. 8. The present invention provides an assembly top block so that different assembly top blocks can be installed on the assembly screw, thereby expanding the clamping range of the three-finger clamp, so that the clamp for processing the automobile exhaust manifold can stably clamp exhaust branch pipes with different inner diameters. Rubber caps are sleeved on the assembly top blocks, and the rubber caps can avoid rigid contact between the assembly top blocks and the exhaust branch pipes, preventing dents and hidden scratches on the inner wall of the exhaust branch pipes due to excessive clamping force. At the same time, the friction between the rubber cap and the inner wall of the exhaust branch pipe is increased by means of the elastic deformation of the rubber cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the clamp mechanism and the manifold body of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the manifold body of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the clamp mechanism of the present invention; Figure 4 The present invention Figure 3 Schematic diagram of the structure at A in the middle; Figure 5 It is a schematic diagram of the three-dimensional structure of the main bracket of the clamp and the assembly round table of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the assembly truncated table and the assembly ring of the present invention; Figure 7 The present invention Figure 6 Schematic diagram of the structure at B in the middle; Figure 8 It is a schematic diagram of the internal three-dimensional structure of the protective sleeve of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the auxiliary slide rail and the upper positioning plate of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the auxiliary bracket of the clamp and the upper positioning plate of the present invention; Reference numerals: 1, manifold body; 101, exhaust main pipe; 102, exhaust branch pipe; 103, main pipe assembly plate; 104, branch pipe assembly plate; 105, assembly hole; 2, fixture table; 3, main slide rail; 4, main slide table; 5, fixture main bracket; 6, assembly round table; 7, three-finger fixture; 8, pneumatic clamp; 9, adjustment screw barrel; 10, double-headed screw; 11, adjustment ring; 12, linear guide rail; 13, electric slider; 14, positioning rod; 1 5. Assembly ring; 16. Lower positioning plate; 17. Positioning rod; 18. Hydraulic lifting rod; 19. Auxiliary slide rail; 20. Auxiliary slide; 21. Auxiliary bracket of the fixture; 22. Upper positioning plate; 23. Positioning cap; 24. Linkage frame; 25. Lower fastening bolt group; 26. Upper fastening bolt group; 27. Laser rangefinder; 28. Distance measuring baffle; 29. ​​Protective sleeve; 30. Sealing plug cap; 31. Assembly screw; 32. Assembly top block; 33. Rubber cap. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0018] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] like Figures 1 to 10As shown, a fixture for processing an automobile exhaust manifold includes a fixture mechanism and a manifold body 1, as shown in FIG. Figure 2 As shown, the manifold body 1 includes an exhaust main pipe 101, a plurality of exhaust branch pipes 102 are fixedly mounted on one end of the exhaust main pipe 101, a main pipe assembly plate 103 is fixedly mounted on the other end of the exhaust main pipe 101, and a branch pipe assembly plate 104 is fixedly mounted on the other end of the exhaust branch pipe 102, and a plurality of assembly holes 105 are opened on the side walls of the main pipe assembly plate 103 and the branch pipe assembly plate 104; like Figure 3 As shown, the fixture mechanism includes a fixture table 2, and a main slide rail 3 is fixedly installed on the top of the fixture table 2. Figure 4 As shown, a plurality of main slides 4 are slidably mounted on the top of the main slide rail 3, and a fixture main bracket 5 is fixedly mounted on the top of each main slide 4. Figure 5 As shown, the top of the clamp main bracket 5 is fixedly installed with an assembly round table 6, and the top of the assembly round table 6 is fixedly installed with a three-finger clamp 7, as shown in FIG. Figure 6 As shown, three evenly distributed pneumatic clamps 8 are driven and installed on the top of the three-finger clamp 7, and a distance adjustment component is provided between any two clamp main brackets 5; specifically, when the automobile exhaust manifold processing clamp is used, the clamp mechanism is provided so that the manifold body 1 to be processed is first taken to the top of the clamp mechanism, so that the exhaust branch pipe 102 on the manifold body 1 faces downward and is aligned with the positions of the multiple three-finger clamps 7, so that the multiple exhaust branch pipes 102 are respectively sleeved on the multiple three-finger clamps 7, and at this time, each three-finger clamp 7 is controlled to drive the three pneumatic clamps 8 to move away from each other, and clamp the exhaust branch pipe 102 from the inside, so that the manifold body 1 is fixedly clamped on the clamp table 2, and the manifold body 1 is fixed as a whole by fixing and clamping the exhaust branch pipe 102 respectively, which is simple to operate and stable to clamp, and convenient for processing the exhaust main pipe 101; The distance adjustment component is used to adjust the overall position of the three-finger clamp 7, such as Figure 5 As shown, the distance adjustment assembly includes two adjustment screw barrels 9 respectively fixedly mounted on the sides of any two adjacent clamp main brackets 5 close to each other, as shown in FIG. Figure 8 As shown, the two adjusting screw barrels 9 are internally threaded with a same double-headed screw 10, and an adjusting rotary ring 11 is fixedly sleeved on the double-headed screw 10. Figure 3 As shown, a linear guide rail 12 parallel to the two main slide rails 3 is fixedly installed on the top of the fixture table 2. Figure 4As shown, the top of the linear guide 12 is driven to install an electric slider 13, and the top of the electric slider 13 is fixedly installed with a positioning rod 14. A plurality of clamp main brackets 5 are located between two positioning rods 14. In this embodiment, a mechanical locking mechanism or an electromagnetic locking device can be provided on the linear guide 12 to limit the electric slider 13, thereby locking the clamp main bracket 5; specifically, by providing a distance adjustment component, when it is necessary to clamp different types of manifold bodies 1, first rotate each adjustment ring 11 according to the position of each exhaust branch pipe 102 port on the manifold body 1, thereby driving the double-headed screw The two ends of 10 respectively perform spiral motion inside the two adjusting screw barrels 9, thereby adjusting the spacing between each clamp main bracket 5, so that the positions of the multiple three-finger clamps 7 correspond to the positions of the new exhaust branch pipes 102, and finally control the two electric sliders 13 to slide toward the position of the clamp main bracket 5 on the linear guide rails 12, drive the two positioning rods 14 to clamp one side of the two outermost clamp main brackets 5, and use the locking device to lock the electric slider 13 to fix the overall position of the three-finger clamp 7, thereby realizing the position adjustment of the clamp mechanism, so that the automobile exhaust manifold processing clamp has a certain versatility.

[0020] like Figure 6 As shown, an assembly ring 15 is fixedly sleeved on the assembly cone 6, and a lower positioning plate 16 is fixedly installed on the top of the assembly ring 15. A plurality of positioning rods 17 adapted to the assembly hole 105 are fixedly installed on the top of the lower positioning plate 16. In the present embodiment, the number and position of the plurality of positioning rods 17 correspond to the position of the assembly hole 105, and the outer diameter of the positioning rods 17 is adapted to the inner diameter of the assembly hole 105. Specifically, by arranging the positioning rods 17, when the manifold body 1 is placed on the clamp mechanism, one end of the plurality of exhaust manifolds 102 will be located on the top of the plurality of lower positioning plates 16, and at the same time, the plurality of positioning rods 17 on the lower positioning plate 16 will be automatically inserted into the interior of each assembly hole 105 as the exhaust manifold 102 is docked with the three-finger clamp 7, thereby playing the role of initial positioning of the manifold body 1, so that the manifold body 1 stands on each lower positioning plate 16, which is convenient for the three-finger clamp 7 to drive the pneumatic clamp 8 to clamp the exhaust manifold 102 internally.

[0021] like Figure 3 As shown, a plurality of evenly distributed hydraulic lifting rods 18 are fixedly installed on the top of the fixture table 2. The hydraulic lifting rods 18 are all vertically arranged. The telescopic ends of the hydraulic lifting rods 18 are all upward and fixedly installed with the same auxiliary slide rail 19. Fig. 9 As shown, a plurality of evenly distributed auxiliary slides 20 are slidably mounted on the top of the auxiliary slide rail 19, and a fixture auxiliary bracket 21 is fixedly mounted on the top of each auxiliary slide 20, and an upper positioning plate 22 is fixedly mounted on the top of each fixture auxiliary bracket 21, as shown in FIG. Fig.10As shown, a positioning cap 23 adapted to the positioning rod 17 is fixedly installed at the bottom of the upper positioning plate 22, and a linkage frame 24 is fixedly installed on one side of the auxiliary slide 20, and the bottom ends of multiple linkage frames 24 are slidably installed on multiple clamp main brackets 5 respectively; specifically, by setting the upper positioning plate 22, after the three-finger clamp 7 drives the pneumatic clamp 8 to clamp each exhaust branch pipe 102 internally, the manifold body 1 is now in a state of precise positioning, and the multiple clamp auxiliary brackets 21 on one side will maintain the same position with the multiple three-finger clamps 7 under the linkage effect of the linkage frame 24. Then, multiple hydraulic lifting rods 18 will simultaneously drive the auxiliary slide rails 19 to descend, thereby driving the upper positioning plate 22 to descend to one side of the exhaust branch pipe 102 through each clamp auxiliary bracket 21, and making the positioning caps 23 at each location dock with one of the positioning plug rods 17 respectively, so that the lower positioning plate 16 and the upper positioning plate 22 clamp each branch pipe assembly plate 104 up and down, realizing the external clamping of the manifold body 1, making the clamping of the manifold body 1 more stable, and allowing the processing equipment to apply a larger load to the exhaust main pipe 101 without affecting the clamping state of the clamp mechanism on the manifold body 1.

[0022] like Figure 6 As shown, a lower screw hole is opened on the side wall of the mounting ring 15, and a lower fastening bolt group 25 is passed through the lower screw hole. The mounting ring 15 is fixedly connected to the mounting round table 6 through the lower fastening bolt group 25. Fig.10 As shown, an upper screw hole is opened on the upper positioning plate 22, and the upper positioning plate 22 is fixedly connected to the fixture sub-bracket 21 by an upper fastening bolt group 26; specifically, by arranging a lower fastening bolt group 25 and an upper fastening bolt group 26, the assembly ring 15 and the upper positioning plate 22 are respectively fixedly connected to the assembly frustum 6 and the laser rangefinder 27 by the lower fastening bolt group 25 and the upper fastening bolt group 26, so that the disassembly and reassembly of the assembly ring 15 and the upper positioning plate 22 are convenient, so that the assembly ring 15, the lower positioning plate 16, the positioning rod 17, the upper positioning plate 22, and the positioning cap 23 can be quickly replaced according to the specifications and appearance of the manifold body 1, thereby further improving the scope of application of the fixture for processing automobile exhaust manifolds.

[0023] like Fig. 9As shown, a distance measuring baffle 28 is fixedly installed on one side of one of the clamp sub-brackets 21, and a laser rangefinder 27 is fixedly installed on one side of the other clamp sub-brackets 21, and the positions of multiple laser rangefinders 27 correspond to the positions of the distance measuring baffle 28; specifically, by setting the laser rangefinder 27, when the spacing and position of each three-finger clamp 7 are adjusted by the distance adjustment component, the multiple clamp sub-brackets 21 located on one side will always maintain synchronous movement with the clamp main bracket 5 through the linkage frame 24 at the bottom, that is, the spacing of the clamp sub-brackets 21 is consistent with the spacing of the clamp main bracket 5, and the laser rangefinder 27 will emit laser to the laser rangefinder 27 or the distance measuring baffle 28 on one side and accurately display the spacing between the two clamp sub-brackets 21, thereby facilitating the precise control of the spacing of the three-finger clamp 7.

[0024] like Figure 8 As shown, protective sleeves 29 are fixedly installed on both sides of the adjusting rotary ring 11, and the two protective sleeves 29 are movably sleeved on the two adjusting screw barrels 9 respectively. Lubrication holes are opened on the side walls of the protective sleeves 29, and sealing plug caps 30 are inserted into the lubrication holes; specifically, by arranging the protective sleeves 29, the protective sleeves 29 can cover the double-headed screw 10, play a role of dust and moisture-proof, and prevent the meshing transmission of the adjusting screw barrel 9 and the double-headed screw 10 from being stuck due to rust, dust and other problems. At the same time, the sealing plug caps 30 can be opened regularly, and lubricating oil can be dripped into the inside of the protective sleeves 29 through the lubrication holes to lubricate and maintain the double-headed screw 10 and the adjusting screw barrel 9, thereby extending the service life of the two.

[0025] like Figure 7 As shown, the ends of the three pneumatic clamps 8 that are away from each other are fixedly installed with assembly screws 31, and the assembly screws 31 are screwed with assembly top blocks 32; specifically, by setting the assembly top blocks 32, different assembly top blocks 32 are installed on the assembly screws 31 according to the inner diameter size of the exhaust branch pipe 102, so that the clamping range of the three-finger clamp 7 is expanded, so that the clamp for processing the automobile exhaust manifold can stably clamp the exhaust branch pipes 102 with different inner diameter sizes.

[0026] like Figure 7 As shown, rubber caps 33 are sleeved on the assembly top blocks 32; specifically, by providing the rubber caps 33, the assembly top blocks 32 are sleeved with rubber caps 33, and the rubber caps 33 can avoid rigid contact between the assembly top blocks 32 and the exhaust branch pipe 102, thereby preventing dents and hidden scratches on the inner wall of the exhaust branch pipe 102 due to excessive clamping force, and at the same time, the elastic deformation of the rubber caps 33 is used to increase the friction between the rubber caps 33 and the inner wall of the exhaust branch pipe 102.

[0027] In summary: when the automobile exhaust manifold processing fixture is used, the fixture mechanism is set up so that the manifold body 1 to be processed is first taken to the top of the fixture mechanism, and the exhaust branch pipe 102 on the manifold body 1 is facing downward and aligned with the position of multiple three-finger clamps 7, so that the multiple exhaust branch pipes 102 are respectively sleeved on the multiple three-finger clamps 7, and at this time, each three-finger clamp 7 is controlled to drive the three pneumatic clamps 8 to move away from each other, and clamp the exhaust branch pipe 102 from the inside, so that the manifold body 1 is fixedly clamped on the fixture table 2, and the manifold body 1 is fixed as a whole by fixing and clamping the exhaust branch pipe 102 respectively. The operation is simple, the clamping is stable, and the exhaust main pipe 101 is convenient to process. By setting the distance adjustment component, different models of manifolds can be processed when needed. When the pipe body 1 is clamped, first, according to the position of the ports of each exhaust branch pipe 102 on the manifold body 1, each adjusting ring 11 is rotated respectively, thereby driving the two ends of the double-headed screw 10 to perform spiral motion inside the two adjusting screw barrels 9 respectively, and then adjusting the spacing of each clamp main bracket 5, so that the positions of multiple three-finger clamps 7 correspond to the positions of the new exhaust branch pipes 102 respectively, and finally controlling the two electric slides 13 to slide toward the position of the clamp main bracket 5 on the linear guide rail 12 respectively, driving the two positioning rods 14 to clamp on one side of the two outermost clamp main brackets 5, and using the locking device to lock the electric slide 13 to fix the overall position of the three-finger clamp 7, so as to achieve the position adjustment of the clamp mechanism, so that the automobile exhaust manifold processing The clamp has a certain degree of versatility. By setting the positioning rod 17, when the manifold body 1 is placed on the clamp mechanism, one end of the multiple exhaust branch pipes 102 will be located on the top of the multiple lower positioning plates 16. At the same time, the multiple positioning rods 17 on the lower positioning plates 16 will be automatically inserted into the interior of each assembly hole 105 as the exhaust branch pipes 102 are connected to the three-finger clamp 7, thereby playing a role in initial positioning of the manifold body 1, so that the manifold body 1 stands on each lower positioning plate 16, which is convenient for the three-finger clamp 7 to drive the pneumatic clamp 8 to clamp the exhaust branch pipe 102 internally. By setting the upper positioning plate 22, after the three-finger clamp 7 drives the pneumatic clamp 8 to clamp each exhaust branch pipe 102 internally, the manifold body 1 is now in a state of precise positioning, and a The multiple clamp sub-brackets 21 on the side will be consistent with the positions of the multiple three-finger clamps 7 under the linkage effect of the linkage frame 24, and then the multiple hydraulic lifting rods 18 will simultaneously drive the sub-slide rails 19 to descend, thereby driving the upper positioning plate 22 to descend to one side of the exhaust branch pipe 102 through each clamp sub-bracket 21, and making the positioning caps 23 at various places dock with one of the positioning plug rods 17, so that the lower positioning plate 16 and the upper positioning plate 22 clamp each branch assembly plate 104 up and down, realizing the external clamping of the manifold body 1, making the clamping of the manifold body 1 more stable, so that the processing equipment can apply a larger load to the exhaust main pipe 101 without affecting the clamping state of the clamp mechanism on the manifold body 1, by setting the lower fastening bolt group 25 and the upper fastening bolt group 26,The assembly ring 15 and the upper positioning plate 22 are fixedly connected to the assembly truncated table 6 and the laser rangefinder 27 through the lower fastening bolt group 25 and the upper fastening bolt group 26, respectively, so that the assembly ring 15 and the upper positioning plate 22 are convenient to disassemble and reassemble, so that the assembly ring 15, the lower positioning plate 16, the positioning plug rod 17, the upper positioning plate 22, and the positioning cap 23 can be quickly replaced according to the specifications and appearance of the manifold body 1, further improving the application range of the automobile exhaust manifold processing fixture. By setting the laser rangefinder 27, the assembly ring 15, the lower positioning plate 16, the positioning plug rod 17, the upper positioning plate 22, and the positioning cap 23 can be quickly replaced according to the specifications and appearance of the manifold body 1, and further improving the application range of the automobile exhaust manifold processing fixture. When the distance adjustment component adjusts the spacing and position of each three-finger clamp 7, the multiple clamp sub-brackets 21 located on one side will always keep synchronous movement with the clamp main bracket 5 through the linkage frame 24 at the bottom, that is, the spacing of the clamp sub-brackets 21 is consistent with the spacing of the clamp main bracket 5, and the laser rangefinder 27 will emit laser to the laser rangefinder 27 or the distance baffle 28 on one side and accurately display the spacing of the two clamp sub-brackets 21, thereby facilitating the precise control of the spacing of the three-finger clamp 7. By setting the protective sleeve 29, the protective sleeve 29 is The protective sleeve 29 can cover the double-headed screw 10 to prevent dust and moisture, and prevent the meshing transmission of the adjusting screw barrel 9 and the double-headed screw 10 from being stagnant due to rust, dust and other problems. At the same time, the sealing plug cap 30 can be opened regularly, and lubricating oil can be dripped into the inside of the protective sleeve 29 through the lubrication hole to lubricate and maintain the double-headed screw 10 and the adjusting screw barrel 9, thereby extending the service life of the two. By setting the assembly top block 32, different assembly top blocks 3 can be installed on the assembly screw 31 according to the inner diameter size of the exhaust branch pipe 102. 2. The clamping range of the three-finger clamp 7 is expanded, so that the clamp for processing automobile exhaust manifolds can stably clamp exhaust manifolds 102 with different inner diameters. By setting the rubber cap 33, the assembly top block 32 is sleeved with the rubber cap 33. The rubber cap 33 can avoid the rigid contact between the assembly top block 32 and the exhaust manifold 102, and prevent the inner wall of the exhaust manifold 102 from being dented or damaged due to excessive clamping force. At the same time, the elastic deformation of the rubber cap 33 is used to increase the friction between the rubber cap 33 and the inner wall of the exhaust manifold 102.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A fixture for processing automobile exhaust manifold, characterized in that: The manifold body (1) comprises a clamp mechanism and a manifold body (1), wherein the manifold body (1) comprises an exhaust main pipe (101), a plurality of exhaust branch pipes (102) are fixedly mounted on one end of the exhaust main pipe (101), a main pipe assembly disk (103) is fixedly mounted on the other end of the exhaust main pipe (101), and a branch pipe assembly disk (104) is fixedly mounted on the other end of each of the exhaust branch pipes (102), and a plurality of assembly holes (105) are provided on the side walls of each of the main pipe assembly disk (103) and the branch pipe assembly disk (104); The clamp mechanism comprises a clamp table (2), a main slide rail (3) is fixedly mounted on the top of the clamp table (2), a plurality of main slide tables (4) are slidably mounted on the top of the main slide rail (3), a clamp main bracket (5) is fixedly mounted on the top of each main slide table (4), an assembly round table (6) is fixedly mounted on the top of each main bracket (5), a three-finger clamp (7) is fixedly mounted on the top of each assembly round table (6), three evenly distributed pneumatic clamps (8) are drive-mounted on the top of each three-finger clamp (7), and a distance adjustment component is provided between any two of the clamp main brackets (5); The distance adjustment component is used to adjust the overall position of the three-finger clamp (7), and the distance adjustment component includes two adjustment screw barrels (9) respectively fixedly installed on the side close to each other of any two adjacent clamp main brackets (5), the two adjustment screw barrels (9) are internally threaded with the same double-headed screw (10), and the double-headed screw (10) is fixedly sleeved with an adjustment ring (11), and the top of the clamp table (2) is fixedly installed with a linear guide rail (12) parallel to the two main slide rails (3), and the top of the linear guide rail (12) is driven to be installed with an electric slider (13), and the top of the electric slider (13) is fixedly installed with a positioning rod (14), and the plurality of clamp main brackets (5) are located between the two positioning rods (14).

2. The fixture for processing an automobile exhaust manifold according to claim 1, characterized in that: The assembly truncated table (6) is fixedly sleeved with an assembly ring (15), the top of the assembly ring (15) is fixedly mounted with a lower positioning plate (16), and the top of the lower positioning plate (16) is fixedly mounted with a plurality of positioning rods (17) that are compatible with the assembly holes (105).

3. The fixture for processing an automobile exhaust manifold according to claim 2, characterized in that: A plurality of evenly distributed hydraulic lifting rods (18) are fixedly installed on the top of the clamp table (2), and the hydraulic lifting rods (18) are all vertically arranged. The telescopic ends of the hydraulic lifting rods (18) are all facing upward and fixedly installed with the same auxiliary slide rail (19). A plurality of evenly distributed auxiliary slides (20) are slidably installed on the top of the auxiliary slide rail (19). A clamp auxiliary bracket (21) is fixedly installed on the top of the auxiliary slide (20), and an upper positioning plate (22) is fixedly installed on the top of the clamp auxiliary bracket (21). A positioning cap (23) adapted to the positioning rod (17) is fixedly installed on the bottom of the upper positioning plate (22). A linkage frame (24) is fixedly installed on one side of the auxiliary slide (20), and the bottom ends of the plurality of linkage frames (24) are respectively slidably installed on the plurality of clamp main brackets (5).

4. A fixture for processing an automobile exhaust manifold according to claim 3, characterized in that: A lower screw hole is formed on the side wall of the assembly ring (15), a lower fastening bolt group (25) is passed through the interior of the lower screw hole, and the assembly ring (15) is fixedly connected to the assembly truncated table (6) via the lower fastening bolt group (25). An upper screw hole is formed on the upper positioning plate (22), an upper fastening bolt group (26) is passed through the interior of the upper screw hole, and the upper positioning plate (22) is fixedly connected to the clamp auxiliary bracket (21) via the upper fastening bolt group (26).

5. The fixture for processing automobile exhaust manifold according to claim 3, characterized in that: A distance measuring baffle (28) is fixedly mounted on one side of one of the clamp sub-brackets (21), and a laser distance meter (27) is fixedly mounted on one side of the other clamp sub-brackets (21), wherein the positions of the plurality of laser distance meters (27) correspond to the positions of the distance measuring baffle (28).

6. The fixture for processing automobile exhaust manifold according to claim 1, characterized in that: Protective sleeves (29) are fixedly mounted on both sides of the adjusting rotary ring (11), and the two protective sleeves (29) are movably sleeved on the two adjusting screw barrels (9) respectively. Lubrication holes are opened on the side walls of the protective sleeves (29), and sealing plug caps (30) are inserted into the lubrication holes.

7. The automobile exhaust manifold processing fixture according to claim 1, characterized in that: An assembly screw (31) is fixedly mounted on one end of the three pneumatic clamping jaws (8) that is away from each other, and an assembly top block (32) is screwed onto the assembly screw (31).

8. The fixture for processing automobile exhaust manifold according to claim 7, characterized in that: The assembly top blocks (32) are sleeved with rubber caps (33).

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