A machining process for fuel injector holes in diesel engine cylinder head

Abstract

This invention discloses a machining process for fuel injector holes in a diesel engine cylinder head, specifically relating to the field of cylinder head fuel injector hole machining technology. The process includes fuel injector positioning and clamping, workpiece transfer, drilling, and workpiece disassembly, inspection, and screening. The fuel injector is placed on top of a turntable using a mechanical gripper for clamping and fixing. Multiple circular holes are fitted with rotating rings. Two symmetrical inner support blocks are movably installed inside each rotating ring. The bottom of each inner support block is movably connected to a connecting rod. Both ends of the connecting rod are integrally formed with the rotating rings. A driven gear is integrally formed at the bottom of each rotating ring. A drive motor drives two mating wheels to achieve synchronous rotation of the first and second rotating wheels, rotating the fuel injector to be machined to the bottom of the clamp. A drill bit is used to machine the top of the fuel injector to spray air. The rotation of the turntable enables the engagement between the baffle on the worktable and the extension rod, releasing the fuel injector.

Description

Technical Field

[0001] This invention specifically relates to the field of cylinder head injector hole processing technology, and more specifically to a diesel engine cylinder head injector hole processing process. Background Technology

[0002] The fuel injector orifice is an important component on the cylinder head of a diesel engine, used to inject fuel into the cylinder for combustion; its manufacturing quality directly affects the performance and reliability of the diesel engine.

[0003] Currently, traditional fuel injector holes are formed using laser, electrical discharge machining, and mechanical processing. However, while traditional methods achieve stability during fuel injector hole machining by clamping the injector, this can cause damage to the injector surface, leading to leaks during use. Furthermore, traditional clamping devices can only clamp one workpiece at a time, requiring frequent disassembly and reassembly, hindering continuous processing and resulting in low work efficiency.

[0004] Chinese patent application CN202321346512.4 discloses a diesel cylinder head injector hole processing device, including a base, a hydraulic rod fixed on the upper surface of the base, a positioning plate fixed on the upper surface of the base and on the side of the hydraulic rod, the positioning plate being L-shaped, and sliding grooves being provided on both outer walls of the positioning plate, and circular rings being slidably installed on both outer walls of the positioning plate through the sliding grooves, with air pipes penetrating the interior of the two circular rings;

[0005] While the structure described in the aforementioned patent can process the nozzle orifice, the nozzle requires manual loading and clamping. The distance between two clamping plates is adjusted by rotating the screw threads in both directions. The user then places the nozzle inside the upper part of the two clamping plates and rotates the second threaded rod to clamp and fix it in place. Although this achieves a fixed position, it cannot guarantee that the workpiece will always be placed in the same position, requiring further adjustment. This results in low efficiency for the equipment described in the patent. Furthermore, the workpiece plate in the patent can only clamp one workpiece at a time, necessitating frequent replacement of the processed workpiece with the workpiece to be processed, thus hindering continuous operation. Summary of the Invention

[0006] The purpose of this invention is to provide a process for machining fuel injector holes in diesel engine cylinder heads. In this device, the fuel injector is placed on top of a rotating assembly. Through the cooperation between the assembly and the top block, two inner support blocks inside the rotating ring effectively support and clamp the fuel injector. A driven gear is provided at the bottom of the rotating ring, which cooperates with a first driving gear. The turntable cooperates with the main rotating shaft. Thus, through the rotation of the first and second rotating wheels, the turntable and the fuel injector rotate in opposite directions. Automatic feeding and unloading are achieved by mechanical grippers on the worktable. Automatic clamping and releasing are effectively achieved through the cooperation between the baffle, electric push cylinder, and extension rod. Multiple rotating rings are provided on the turntable. Thus, the rotating assembly is driven by a drive assembly to rotate, effectively enabling the drilling assembly to work continuously and improving work efficiency, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A process for machining fuel injector holes in a diesel engine cylinder head includes the following steps:

[0009] Step a, Positioning and clamping: The fuel injector is placed on the rotating assembly using a mechanical clamp, and the fuel injector is clamped and fixed by the cooperation between the mating assembly and the rotating assembly;

[0010] Step b, workpiece transfer: The drive motor drives the drive assembly to rotate, thereby enabling the rotating assembly to drive the oil injector to rotate and perform alternating processing;

[0011] Step c, Drilling: The injection hole at the top of the fuel injector is machined and chamfered using a machining drill bit;

[0012] Step d, workpiece disassembly: The finished fuel injector is driven by the drive assembly to rotate the rotating assembly, thereby disassembling the finished workpiece;

[0013] Step e, Inspection and Screening: Inspect the finished fuel injector holes to ensure that the fuel injectors with consistent roundness and flow rate are used as the final product;

[0014] In the above process, the work steps from step a to step d involve rotating components, driving components, mating components, and drilling components working together to complete the corresponding processes;

[0015] During the positioning and clamping process in step a, the fuel injector is transferred by the mechanical gripper and placed on the top of the turntable in the rotating assembly. The fuel injector is clamped and fixed by the cooperation between the rotating assembly and the mating assembly.

[0016] The turntable has multiple circular holes; a rotating ring is installed in each of the circular holes; the rotating ring is I-shaped; two symmetrical inner support blocks are movably installed inside the rotating ring; the bottom of the inner support blocks is movably connected to a connecting rod; the two ends of the connecting rod are integrally formed with the rotating ring; a driven gear is integrally formed at the bottom of the rotating ring; the circular holes effectively limit the rotation of the rotating ring, ensuring the concentricity of the fuel injector and the drilling assembly, and effectively ensuring the processing quality of the fuel injection hole;

[0017] Preferably, a top block is provided between the two inner support blocks; the top block is conical; the bottom is movably installed with the movable frame; the movable frame is movably installed with the mating components; by pushing the top block upwards, the two inner support blocks are expanded outwards, thereby fixing the inner support of the fuel injector and ensuring the stability of the fuel injector during processing.

[0018] Preferably, the mating assembly includes a fixed rod; the top of the fixed rod is fixedly installed on the bottom of the turntable; the bottom of the fixed rod is connected to the movable rod via a rotating shaft; the movable rod is fixedly installed to the movable frame via a rotating shaft; the end of the movable rod away from the fixed rod is movably installed to the extension rod via a U-shaped frame; by adjusting the extension rod up and down, the movable frame drives the top block to move up and down, thereby clamping or releasing the fuel injector.

[0019] Preferably, a fixing plate is provided on one side of the movable rod; the fixing plate is fixedly installed on the bottom edge of the turntable; and an L-shaped groove is provided on the fixing plate; a protrusion is provided on the side of the fixing plate near the movable rod, and the protrusion is connected to the extension rod by a spring; the end of the extension rod away from the U-shaped frame passes through the L-shaped groove, and the downward pull of the spring effectively ensures the stability of the extension rod in the L-shaped groove, preventing loosening and causing the fuel injector to loosen;

[0020] Preferably, the turntable is installed in conjunction with the drive assembly; the drive assembly includes a main rotating shaft; a sleeve is fitted onto the top of the main rotating shaft; a first driving gear is integrally formed on the top of the sleeve; the first driving gear meshes with multiple driven gears; a first rotating wheel is integrally formed at the end of the sleeve away from the first driving gear; the first rotating wheel drives the first driving gear to rotate.

[0021] Preferably, a second rotating wheel is also fixedly installed on the main rotating shaft; two symmetrically arranged mating wheels are installed on one side of the first and second rotating wheels; the first and second rotating wheels are connected to the two mating wheels by a connecting belt; ensuring that the two rotating wheels rotate synchronously, so that the fuel injector rotates synchronously while the turntable rotates; ensuring the quality of processing;

[0022] Preferably, the two shafts on which the mating wheels are mounted are provided with support blocks at both ends, and the support blocks are fixedly mounted to the mounting blocks fitted on the main shaft via support frames; the shafts on which the mating wheels are mounted are also provided with driven wheels; the driven wheels are connected to the driving wheels on the output shaft of the drive motor via a toothed belt; the drive motor is fixedly mounted on the support beam at the bottom of the worktable; the bottom of the main shaft is mounted on the bottom of the worktable via bearings.

[0023] Preferably, a baffle is fixedly installed between the top of the workbench and the middle of the turntable; the baffle is Z-shaped; a mounting block is provided on one side of the baffle; the mounting block is right-angled triangular; an electric push cylinder is fixedly installed on the inclined surface of the mounting block; the baffle, the mounting block, and the electric push cylinder are all located at the edge of the turntable; wherein the height of the mounting block is lower than the top of the L-shaped groove opened on the fixed plate; by blocking the end of the extension rod with the baffle, the extension rod is reset, thereby separating the top block from the two inner support blocks and releasing the fuel injector; by driving the end of the extension rod upward with the electric push cylinder, the inner support blocks clamp and fix the fuel injector.

[0024] Preferably, a mechanical gripper is fixedly installed on the workbench; the mechanical gripper is installed on the side of the mounting block away from the baffle.

[0025] Preferably, a drilling assembly is fixedly installed at the end of the worktable away from the mounting block; the drilling assembly includes a C-frame fixedly installed with the worktable; the drilling assembly also includes two symmetrical support rods; a second drive gear is fitted between the two support rods; one side of the second drive gear is inside the toothed plate; the toothed plate is fixedly installed on the mounting frame; both ends of the mounting frame are slidably installed with two guide rods; a clamp is fixedly installed on the side of the mounting frame away from the toothed plate; a drill bit is fitted at the bottom of the clamp; the second drive gear is fixedly installed with a stepper motor via a rotating shaft; the support rods and guide rods are fixedly installed on the C-frame; the rotation of the second drive gear causes the toothed plate to drive the drill bit at the bottom of the clamp to move up and down, thereby processing the injection hole at the top of the fuel injector;

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. In use, the present invention automatically places the fuel injector at the top of the rotating ring by a mechanical gripper. The drive motor drives two mating wheels to rotate the first and second rotating wheels synchronously, thereby rotating the fuel injector to be processed to the bottom of the chuck. The top spray hole of the fuel injector is processed by a drill bit. After processing, the rotation of the turntable enables the baffle on the worktable to engage with the extension rod, thereby releasing the fuel injector.

[0028] 2. In this invention, the turntable is installed in conjunction with the main rotating shaft, and a sleeve is installed on the main rotating shaft. The two ends of the sleeve are respectively integrally provided with a first rotating wheel and a first driving gear. The first driving gear meshes with the driven gear at the bottom of the rotating ring. The first rotating wheel is connected to the second rotating wheel through a connecting belt and two mating wheels. In this way, the first rotating wheel and the second rotating wheel rotate synchronously, so that the turntable and the rotating ring rotate in opposite directions.

[0029] 3. After placement, the extension rod is driven by the push rod of the electric push cylinder installed on the inclined surface of the mounting block to move along the L-shaped groove opened on the fixed plate. The extension rod drives the movable rod to move upward through the U-shaped frame, and the movable rod drives the movable frame and the top block to move upward. The edge of the top block contacts the two inner support blocks, so that the two inner support blocks can effectively support the fuel injector and ensure the stability of the fuel injector during processing.

[0030] 4. This invention drives the driven wheel to rotate via a drive motor, thereby enabling the two mating wheels to drive the first wheel and the second wheel to rotate in opposite directions. Since the diameter of the first driving gear is larger than the diameter of the driven gear, the rotation speed of the ring driving the fuel injector is greater than the rotation speed of the main shaft driving the turntable. This effectively ensures the processing quality of the fuel injector nozzle orifice during processing.

[0031] 5. This invention uses the rotation of a turntable to rotate the fuel injector to the bottom of the clamp. A stepper motor drives the second drive gear to mesh with the gear plate, which in turn drives the mounting bracket and the clamp to move up and down along the guide rod. This allows the clamp to drive the drill bit to process the top of the fuel injector to form the injection hole.

[0032] 6. The fuel injector processed by this invention is rotated to one side of the baffle installed on the worktable by the rotation of the turntable. The baffle blocks the extension rod, causing the extension rod to move downward. When the extension rod moves downward, the U-shaped frame drives the movable rod and movable frame to separate the top block from the two inner support blocks, thereby releasing the fuel injector from the two inner support blocks. Automatic unloading is achieved by mechanical grippers. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0034] Figure 2 For the present invention Figure 1 Another perspective structural diagram.

[0035] Figure 3 for Figure 2 A schematic diagram of the bottom structure.

[0036] Figure 4 for Figure 3 Side view.

[0037] Figure 5 for Figure 1 A breakdown diagram.

[0038] Figure 6 for Figure 5 A schematic diagram of the bottom structure.

[0039] Figure 7 for Figure 6 A three-dimensional structural diagram of the driving component.

[0040] Figure 8 for Figure 7 Another perspective structural diagram.

[0041] Figure 9 for Figure 8 Side view.

[0042] Figure 10 for Figure 9 AA sectional view.

[0043] Figure 11 for Figure 5 A schematic diagram of the three-dimensional structure of the rotating component.

[0044] Figure 12 for Figure 11 Bottom view of the structure.

[0045] Figure 13 for Figure 11 Side view.

[0046] Figure 14 for Figure 13 BB cross-sectional view

[0047] Figure 15 for Figure 5 Another structural diagram of the punching component.

[0048] Figure 16 for Figure 11 Schematic diagram of the internal structure of the transfer ring.

[0049] Figure 17 for Figure 5 A schematic diagram of the three-dimensional structure of the components.

[0050] Figure 18 for Figure 17 Enlarged view of the local structure at point C.

[0051] In the diagram: 1-Workbench, 2-Drive motor, 3-Rotating assembly, 30-Turntable, 31-Inner support block, 32-Rotating ring, 33-Top block, 34-Driven gear, 35-Modible frame, 36-Connecting rod, 4-Drilling assembly, 40-C-frame, 41-Support rod, 42-Second driving gear, 42-Gear plate, 44-Stepper motor, 45-Guide rod, 46-Mounting bracket, 47-Clamping sleeve, 5-Fuel injector, 6-Baffle, 7-Mounting block, 8-Electric actuator 9-Cylinder, 9-Drive assembly, 90-Bearing, 91-Matching wheel, 92-Connecting belt, 93-First rotating wheel, 94-Second rotating wheel, 95-Sleeve, 96-First driving gear, 97-Main shaft, 98-Support frame, 99-Driven rotating wheel, 10-Mechanical gripper, 11-Matching assembly, 110-Fixing plate, 111-L-shaped groove, 112-Fixing rod, 113-Moving rod, 114-U-shaped frame, 115-Spring, 116-Extension rod. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] Please see Figure 1-6 In this embodiment of the invention, a process for machining fuel injector holes in a diesel engine cylinder head includes the following steps:

[0054] Step a, positioning and clamping: The fuel injector 5 is placed on the rotating assembly 3 by the mechanical clamp 10, and the fuel injector 5 is clamped and fixed by the cooperation between the mating assembly 11 and the rotating assembly 3;

[0055] Step b, workpiece transfer: The drive motor 2 drives the drive assembly 9 to rotate, thereby enabling the rotating assembly 3 to drive the oil injector 5 to rotate and perform alternating processing.

[0056] Step c, Drilling: The injection hole at the top of the fuel injector 5 is machined and chamfered using a machining drill bit;

[0057] Step d, workpiece disassembly: The finished fuel injector 5 drives the rotating component 3 to rotate via the drive component 9, thereby disassembling the finished workpiece;

[0058] Step e, Inspection and Screening: Inspect the finished fuel injector holes to ensure that the fuel injectors with consistent roundness and flow rate are used as the final product;

[0059] In the above process, the work steps from step a to step d involve the rotating component 3, the driving component 9, the mating component 11, and the drilling component 4 working together to complete the corresponding steps.

[0060] During the positioning and clamping process in step a, the fuel injector 5 is transferred by the mechanical gripper 10 and placed on the top of the turntable 30 in the rotating assembly 3. The fuel injector 5 is clamped and fixed by the cooperation between the rotating assembly 3 and the mating assembly 11.

[0061] The turntable 30 has multiple circular holes; a rotating ring 32 is installed in each of the multiple circular holes; the rotating ring 32 is I-shaped; two symmetrical inner support blocks 31 are movably installed inside the multiple rotating rings 32; the bottom of the inner support blocks 31 is movably connected to the connecting rod 36; both ends of the connecting rod 36 are integrally formed with the rotating ring 32; a driven gear 34 is integrally formed at the bottom of the rotating ring 32.

[0062] A top block 33 is provided between the two inner support blocks 31; the top block 33 is conical; the bottom is movably installed with the movable frame 35; the movable frame 35 is movably installed with the mating component 11.

[0063] By adopting the above technical solution, during use, the fuel injector 5 is automatically placed at the top of the rotating ring 32 by the mechanical gripper 10. The drive motor 2 drives the two mating wheels 91 to realize the synchronous rotation of the first rotating wheel 93 and the second rotating wheel 94, thereby rotating the fuel injector 5 to be processed to the bottom of the clamp 47. The top spray hole of the fuel injector 5 is processed by the drill bit. After processing, the rotation of the turntable 30 realizes the engagement between the baffle 6 on the worktable 1 and the extension rod 116, thereby releasing the fuel injector 5.

[0064] Please see Figure 11-18 Furthermore, the mating assembly 11 includes a fixed rod 112; the top of the fixed rod 112 is fixedly installed at the bottom of the turntable 30; the bottom of the fixed rod 112 is connected to the movable rod 113 via a pivot; the movable rod 113 is fixedly installed to the movable frame 35 via a pivot; the end of the movable rod 113 away from the fixed rod 112 is movably installed to the extension rod 116 via a U-shaped frame 114.

[0065] A fixing plate 110 is provided on one side of the movable rod 113; the fixing plate 110 is fixedly installed on the bottom edge of the turntable 30; and an L-shaped groove 111 is provided on the fixing plate 110; a protrusion is provided on the side of the fixing plate 110 near the movable rod 113, and the protrusion is connected to the extension rod 116 through a spring 115; the end of the extension rod 116 away from the U-shaped frame 114 passes through the L-shaped groove 111.

[0066] Please see Figure 1-10In this embodiment, the turntable 30 is installed in conjunction with the drive assembly 9. The drive assembly 9 includes a main rotating shaft 97. A sleeve 95 is fitted on the top of the main rotating shaft 97. A first driving gear 96 is integrally provided on the top of the sleeve 95. The first driving gear 96 meshes with a plurality of driven gears 34. A first rotating wheel 93 is integrally provided at the end of the sleeve 95 away from the first driving gear 96.

[0067] A second rotating wheel 94 is also fixedly installed on the main rotating shaft 97; two symmetrically arranged mating wheels 91 are installed on one side of the first rotating wheel 93 and the second rotating wheel 94; the first rotating wheel 93 and the second rotating wheel 94 are connected to the two mating wheels 91 by a connecting belt 92.

[0068] By adopting the above technical solution, the turntable 30 is installed in conjunction with the main rotating shaft 97. A sleeve 95 is installed on the main rotating shaft 97. The two ends of the sleeve 95 are respectively integrally provided with a first rotating wheel 93 and a first driving gear 96. The first driving gear 96 meshes with the driven gear 34 at the bottom of the rotating ring 32. The first rotating wheel 93 is connected to the second rotating wheel 94 through a connecting belt 92 and two mating wheels 91. In this way, the first rotating wheel 93 and the second rotating wheel 94 rotate synchronously, so that the turntable 30 and the rotating ring 32 rotate in opposite directions.

[0069] Furthermore, after placement, the extension rod 116 is moved along the L-shaped groove 111 opened on the fixed plate 110 by the push rod of the electric push cylinder 8 installed on the inclined surface of the mounting block 7. This allows the extension rod 116 to move the movable rod 113 upward through the U-shaped frame 114. The movable rod 113 then moves the movable frame 35 and the top block 33 upward. The edge of the top block 33 contacts the two inner support blocks 31, thus enabling the two inner support blocks 31 to effectively support the fuel injector 5 and ensure the stability of the fuel injector 5 during processing.

[0070] In this embodiment, support blocks are provided at both ends of the rotating shaft on which the two mating wheels 91 are mounted. The support blocks are fixedly installed to the mounting blocks fitted on the main rotating shaft 97 via support frames 98. A driven rotating wheel 99 is also provided on the rotating shaft on which the mating wheels 91 are mounted. The driven rotating wheel 99 is connected to the driving rotating wheel on the output shaft of the drive motor 2 via a toothed belt. The drive motor 2 is fixedly installed on the support beam at the bottom of the worktable 1. The bottom of the main rotating shaft 97 is installed at the bottom of the worktable 1 via bearings 90.

[0071] Please see Figure 1-4A baffle 6 is fixedly installed between the top of the workbench 1 and the turntable 30; the baffle 6 is Z-shaped; a mounting block 7 is provided on one side of the baffle 6; the mounting block 7 is right-angled triangular; an electric push cylinder 8 is fixedly installed on the inclined surface of the mounting block 7; the baffle 6, the mounting block 7 and the electric push cylinder 8 are all located at the edge of the turntable 30; wherein the height of the mounting block 7 is lower than the top of the L-shaped groove 111 opened on the fixed plate 110;

[0072] By adopting the above technical solution, the driven wheel 99 is driven to rotate by the drive motor 2, so that the two mating wheels 91 drive the first wheel 93 and the second wheel 94 to rotate in opposite directions. Since the diameter of the first driving gear 96 is larger than the diameter of the driven gear 34, the rotation speed of the ring 32 driving the nozzle 5 is greater than the rotation speed of the main shaft 97 driving the turntable 30. In this way, the processing quality of the nozzle 5 spray hole is effectively guaranteed during processing.

[0073] Furthermore, by rotating the turntable 30, the fuel injector 5 is rotated to the bottom of the clamp 47. The stepper motor 44 drives the second drive gear 42 to mesh with the toothed plate 43, so that the toothed plate 43 drives the mounting bracket 46 and the clamp 47 to move up and down along the guide rod 45, and the clamp 47 drives the drill bit to process the top of the fuel injector 5 for fuel injection hole.

[0074] Please see Figure 1 , 2 3, 4, 5, 15; In this embodiment; a mechanical gripper 10 is fixedly installed on the workbench 1; the mechanical gripper 10 is installed on the side of the mounting block 7 away from the baffle 6;

[0075] A drilling assembly 4 is fixedly installed at the end of the workbench 1 away from the mounting block 7; the drilling assembly 4 includes a C-shaped frame 40 fixedly installed with the workbench 1; the drilling assembly 4 also includes two symmetrical support rods 41; a second drive gear 42 is fitted between the two support rods 41; one side of the second drive gear 42 is inside a toothed plate 43; the toothed plate 43 is fixedly installed on a mounting frame 46; both ends of the mounting frame 46 are slidably installed with two guide rods 45; a clamp 47 is fixedly installed on the side of the mounting frame 46 away from the toothed plate 43; a drill bit is fitted at the bottom of the clamp 47; the second drive gear 42 is fixedly installed with a stepper motor 44 via a rotating shaft; the support rods 41 and guide rods 45 are fixedly installed on the C-shaped frame 40.

[0076] By adopting the above technical solution, the processed fuel injector 5 is rotated to one side of the baffle 6 installed on the worktable 1 by the rotation of the turntable 30. The baffle 6 blocks the extension rod 116, so that the extension rod 116 moves downward. When the extension rod 116 moves downward, the U-shaped frame 114 drives the movable rod 113 and the movable frame 35 to separate the top block 33 from the two inner support blocks 31, so that the two inner support blocks 31 release the fuel injector 5. Automatic unloading is achieved by the mechanical gripper 10.

[0077] The working principle of this invention is as follows: When in use, the fuel injector 5 is automatically placed at the top of the rotating ring 32 by the mechanical gripper 10. The drive motor 2 drives the two mating wheels 91 to realize the synchronous rotation of the first rotating wheel 93 and the second rotating wheel 94, thereby rotating the fuel injector 5 to be processed to the bottom of the clamp 47. The top spray hole of the fuel injector 5 is processed by the drill bit. After processing, the rotation of the turntable 30 realizes the engagement between the baffle 6 on the worktable 1 and the extension rod 116, thereby releasing the fuel injector 5.

[0078] The turntable 30 is installed in conjunction with the main shaft 97. A sleeve 95 is installed on the main shaft 97. The two ends of the sleeve 95 are integrally provided with a first rotating wheel 93 and a first driving gear 96. The first driving gear 96 meshes with the driven gear 34 at the bottom of the ring 32. The first rotating wheel 93 is connected to the second rotating wheel 94 through a connecting belt 92 and two mating wheels 91. In this way, the first rotating wheel 93 and the second rotating wheel 94 rotate synchronously, so that the turntable 30 and the ring 32 rotate in opposite directions.

[0079] After placement, the extension rod 116 is driven by the push rod of the electric push cylinder 8 installed on the inclined surface of the mounting block 7 to move along the L-shaped groove 111 opened on the fixed plate 110. The extension rod 116 drives the movable rod 113 to move upward through the U-shaped frame 114. The movable rod 113 drives the movable frame 35 and the top block 33 to move upward. The edge of the top block 33 contacts the two inner support blocks 31, so that the two inner support blocks 31 can effectively support the fuel injector 5 and ensure the stability of the fuel injector 5 during processing.

[0080] The driven motor 2 drives the driven wheel 99 to rotate, which in turn drives the two mating wheels 91 to drive the first wheel 93 and the second wheel 94 to rotate in opposite directions. Since the diameter of the first driving gear 96 is larger than the diameter of the driven gear 34, the rotation speed of the ring 32 driving the nozzle 5 to rotate is greater than the rotation speed of the main shaft 97 driving the turntable 30. This effectively ensures the machining quality of the nozzle 5 spray hole during processing.

[0081] By rotating the turntable 30, the fuel injector 5 is rotated to the bottom of the clamp 47. The stepper motor 44 drives the second drive gear 42 to mesh with the toothed plate 43, so that the toothed plate 43 drives the mounting bracket 46 and the clamp 47 to move up and down along the guide rod 45, and the clamp 47 drives the drill bit to process the fuel injection hole on the top of the fuel injector 5.

[0082] The finished fuel injector 5 is rotated to one side of the baffle 6 installed on the worktable 1 by the rotation of the turntable 30. The baffle 6 blocks the extension rod 116, allowing the extension rod 116 to move downward. When the extension rod 116 moves downward, the U-shaped frame 114 drives the movable rod 113 and the movable frame 35 to separate the top block 33 from the two inner support blocks 31, so that the two inner support blocks 31 release the fuel injector 5. Automatic unloading is achieved by the mechanical gripper 10.

[0083] It will be apparent 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 invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0084] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A machining process for fuel injector holes in a diesel engine cylinder head, characterized in that: Includes the following steps: Step a, positioning and clamping: The fuel injector (5) is placed on the rotating assembly (3) by the mechanical clamp (10), and the fuel injector (5) is clamped and fixed by the cooperation between the mating assembly (11) and the rotating assembly (3); Step b, workpiece transfer: The drive motor (2) drives the drive assembly (9) to rotate, thereby enabling the rotating assembly (3) to drive the oil injector (5) to perform alternating rotation processing; Step c, Drilling: The oil injection hole at the top of the nozzle (5) is machined and chamfered using a machining drill bit; Step d, workpiece disassembly: The finished fuel injector (5) is driven by the drive assembly (9) to rotate the rotating assembly (3), thereby disassembling the finished workpiece; Step e, Inspection and Screening: Inspect the finished fuel injector holes to ensure that the fuel injectors with consistent roundness and flow rate are used as the final product; In the above process, the work steps from step a to step d are completed by the rotating component (3), the driving component (9), the mating component (11), and the drilling component (4) working together to complete the corresponding steps; During the positioning and clamping of step a, the fuel injector (5) is transferred by the mechanical gripper (10) and placed on the top of the turntable (30) in the rotating assembly (3). The fuel injector (5) is clamped and fixed by the cooperation between the rotating assembly (3) and the mating assembly (11). in; The turntable (30) has multiple circular holes; a rotating ring (32) is installed in each of the multiple circular holes; the rotating ring (32) has an I-shaped cross-section; two symmetrical inner support blocks (31) are movably installed inside the multiple rotating rings (32); the bottom of the inner support block (31) is movably connected to the connecting rod (36); the two ends of the connecting rod (36) are integrally set with the rotating ring (32); a driven gear (34) is integrally set at the bottom of the rotating ring (32). The mating assembly (11) includes a fixed rod (112); the top of the fixed rod (112) is fixedly installed at the bottom of the turntable (30); the bottom of the fixed rod (112) is connected to the movable rod (113) via a pivot; the movable rod (113) is fixedly installed to the movable frame (35) via a pivot; the end of the movable rod (113) away from the fixed rod (112) is movably installed to the extension rod (116) via a U-shaped frame (114); A fixing plate (110) is provided on one side of the movable rod (113); the fixing plate (110) is fixedly installed on the bottom edge of the turntable (30); and an L-shaped groove (111) is provided on the fixing plate (110); a protrusion is provided on the side of the fixing plate (110) near the movable rod (113), and the protrusion is connected to the extension rod (116) by a spring (115); the end of the extension rod (116) away from the U-shaped frame (114) passes through the L-shaped groove (111). The turntable (30) is installed in conjunction with the drive assembly (9); the drive assembly (9) includes a main shaft (97); a sleeve (95) is fitted on the top of the main shaft (97); a first drive gear (96) is integrally provided on the top of the sleeve (95); the first drive gear (96) meshes with a plurality of driven gears (34); a first wheel (93) is integrally provided on the end of the sleeve (95) away from the first drive gear (96). A second rotating wheel (94) is also fixedly installed on the main rotating shaft (97); two symmetrically arranged mating wheels (91) are installed on one side of the first rotating wheel (93) and the second rotating wheel (94); the first rotating wheel (93) and the second rotating wheel (94) are connected to the two mating wheels (91) by a connecting belt (92).

2. The machining process for a diesel engine cylinder head injector hole according to claim 1, characterized in that: A top block (33) is provided between the two inner support blocks (31); the top block (33) is conical; the bottom of the top block (33) is movably installed with the movable frame (35); the movable frame (35) is movably installed with the mating component (11).

3. The machining process for the fuel injector hole in the cylinder head of a diesel engine according to claim 1, characterized in that: The two mating wheels (91) are mounted on a shaft with support blocks at both ends. The support blocks are fixedly mounted to the mounting blocks on the main shaft (97) via a support frame (98). The mating wheels (91) are also mounted on a driven wheel (99). The driven wheel (99) is connected to the drive wheel on the output shaft of the drive motor (2) via a toothed belt. The drive motor (2) is fixedly mounted on the support beam at the bottom of the worktable (1). The bottom of the main shaft (97) is mounted on the bottom of the worktable (1) via a bearing (90).

4. The machining process for a diesel engine cylinder head injector hole according to claim 3, characterized in that: A baffle (6) is fixedly installed between the top of the workbench (1) and the turntable (30); the baffle (6) is Z-shaped; a mounting block (7) is provided on one side of the baffle (6); the mounting block (7) is right-angled triangle; an electric push cylinder (8) is fixedly installed on the inclined surface of the mounting block (7); the baffle (6), the mounting block (7) and the electric push cylinder (8) are all located at the edge of the turntable (30); the height of the mounting block (7) is lower than the top of the L-shaped groove (111) opened on the fixed plate (110).

5. The machining process for a diesel engine cylinder head injector hole according to claim 4, characterized in that: A mechanical gripper (10) is also fixedly installed on the workbench (1); the mechanical gripper (10) is installed on the side of the mounting block (7) away from the baffle (6).

6. The machining process for a diesel engine cylinder head injector hole according to claim 5, characterized in that: A drilling assembly (4) is fixedly installed at the end of the workbench (1) away from the mounting block (7); the drilling assembly (4) includes a C-shaped frame (40) fixedly installed with the workbench (1); the drilling assembly (4) also includes two symmetrical support rods (41); a second drive gear (42) is fitted between the two support rods (41); one side of the second drive gear (42) meshes with a toothed plate (43); the toothed plate (43) is fixedly installed on the mounting frame (46); the two ends of the mounting frame (46) are slidably installed with two guide rods (45); a clamp (47) is fixedly installed on the side of the mounting frame (46) away from the toothed plate (43); a drill bit is fitted at the bottom of the clamp (47); the second drive gear (42) is fixedly installed with a stepper motor (44) through a rotating shaft; the support rods (41) and guide rods (45) are fixedly installed on the C-shaped frame (40).

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