Oil inlet hole machining clamp of oil sprayer body
By using a clamping design with a triangular clamping plate and a pressure sensor, the problem of poor adaptability of traditional clamps is solved, achieving stable clamping and efficient machining of the fuel injector, and ensuring machining accuracy and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional injector clamps are difficult to adapt to injectors of different diameters or shapes, resulting in low processing efficiency and low precision. Uneven clamping force can easily cause injectors to shake or shift.
The clamping design employs a triangular clamping plate and pressure sensor in conjunction with a moving linkage and motor drive. The triangular clamping plate provides multiple support points and automatically adjusts the support force and position according to the size and shape of the injector. The pressure sensor monitors and adjusts the clamping force in real time.
It achieves stable clamping of injectors of different sizes, avoiding shaking and displacement, ensuring machining accuracy and efficiency, and the uniformity of clamping force improves the quality of the workpiece.
Smart Images
Figure CN224073855U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of fuel injector processing equipment, and in particular to a jig for processing the oil inlet hole of a fuel injector body. Background Technology
[0002] Fuel injectors are precision devices with very high machining accuracy, requiring a wide dynamic flow range, strong anti-clogging and anti-contamination capabilities, and good atomization performance. Fuel injectors receive fuel injection pulse signals from the ECU and precisely control the amount of fuel injected.
[0003] According to patent publication number CN219275193U, a jig for machining the oil inlet hole of an injector body includes a support block. The bottom of the support block is rotatably connected to the middle of the top surface of a base, and a bracket is slidably connected to the top of the support block. Clamping mechanisms are provided on one side of each of the two fixed plates. Each clamping mechanism includes a threaded rod, a clamping plate, a slot, a nut, a lever, and a sliding rod. The middle of the threaded rod is threadedly connected to the top of the fixed plate. One bottom side of the clamping plate is fixedly connected to one end of the sliding rod, and the outer side of the sliding rod is slidably connected to the bottom of the fixed plate. A slot is provided in the middle of the other side of the clamping plate. In this invention, by clamping the injector between the two clamping plates, rotating the first nut allows the bracket to slide within the slot in the middle of the support block, thereby adjusting the angle of the injector body. This avoids manual adjustment of the angle when machining oblique holes, thus improving machining efficiency.
[0004] The above describes the injector and the fixture used for processing. Traditional fixtures are usually of fixed size and are difficult to adapt to injectors of different diameters or shapes. For injectors of different sizes, it is necessary to frequently change the fixture or make complex adjustments, which delays the processing efficiency. At the same time, the force applied to the injector by the traditional fixture during the clamping process is uneven, which can easily cause the injector to shake or shift during the processing, affecting the processing accuracy and workpiece quality. Utility Model Content
[0005] The purpose of this invention is to solve the technical problem that existing fixtures are usually of fixed size and cannot adapt to injectors of different diameters or shapes, and to propose a fixture for machining the oil inlet hole of the injector body.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a jig for machining the oil inlet hole of an injector body, including a machining table, wherein the top surface of the machining table is provided with clamping brackets, and there are two sets of clamping brackets. Each clamping bracket includes a movable connecting rod, and a triangular clamping plate is bolted to the connecting end of the movable connecting rod. The triangular clamping plate is triangular, and a force-bearing plate is provided at the clamping surface of the triangular clamping plate. A movable seat is fixed to the bottom surface of the movable connecting rod, and a movable cavity is opened on the top surface of the machining table.
[0007] As can be seen, in the above technical solution, the fixture used for injector processing mainly clamps the workpiece through a clamping bracket. The triangular clamping plate in the clamping bracket provides multiple support points, which can apply support force at different positions according to the size of the injector. The triangular structure allows the clamping bracket to automatically adjust the support force and position during the movement of the bracket according to the different diameters or shapes of the injector.
[0008] Preferably, a pressure sensor is fixed inside the triangular clamping plate, and the pressure sensor is connected to the force plate, and the force plate is rectangular.
[0009] As can be seen, in the above technical solution, the clamping force can be monitored and adjusted in real time by using pressure sensors and force plates to avoid damage to the workpiece surface.
[0010] Preferably, a threaded cylinder is internally threaded into the central through hole of the processing table, and a positioning hole is provided on the top surface of the threaded cylinder.
[0011] As can be seen, in the above technical solution, the positioning hole on the threaded cylinder can limit the workpiece to be processed, making it convenient for personnel to place the workpiece in the specified clamping position and wait for it to be clamped and processed.
[0012] Preferably, the movable seat is located inside the movable cavity, and the movable seat and the movable cavity cooperate with each other, and the movable seat and the movable cavity are slidably connected.
[0013] As can be seen, in the above technical solution, the movable seat can slide within the movable cavity, thereby driving the movement of the movable connecting rod and the triangular clamping plate.
[0014] Preferably, a lead screw and a limiting rod are respectively installed in the movable cavity, with the lead screw located between the two limiting rods, and the movable seat is sleeved on the surface of the lead screw and the limiting rod.
[0015] As can be seen, in the above technical solutions, the movable seat is sleeved on the surface of the lead screw and the limiting rod, and can move along the surface of the lead screw and the limiting rod when moving in the movable cavity.
[0016] Preferably, a motor is installed at one end of the lead screw, and the movable seat is threadedly connected to the surface of the lead screw.
[0017] As can be seen, in the above technical solution, adding a motor to the lead screw can make the lead screw rotate, and at this time the moving seat can automatically complete the movement and adjustment according to the rotation direction and number of turns of the lead screw.
[0018] Preferably, the clamping surface of the triangular clamping plate is V-shaped, and the two triangular clamping plates are horizontally aligned.
[0019] As can be seen, the above technical solution clarifies the shape of the clamping surface of the triangular clamping plate, which can better adapt to the workpiece and provide a more stable clamping effect. The two triangular clamping plates are horizontally aligned to prevent the workpiece from tilting or shifting during the clamping process.
[0020] Beneficial effects
[0021] In this invention, the fixture for injector processing mainly clamps the workpiece using a clamping bracket. The triangular clamping plate in the clamping bracket provides multiple support points, allowing support force to be applied at different positions according to the size of the injector. The triangular structure enables the clamping bracket to automatically adjust the support force and position during bracket movement according to the different diameters or shapes of the injectors. Combined with the movement method of the bracket, the clamping distance can be quickly adjusted, ensuring that injectors of different sizes can be clamped by the bracket. Whether the injector is small or large, the position of the bracket can be adjusted to ensure the effectiveness of the bracket and thus adapt to different sizes of injectors. At the same time, the triangular clamping bracket provides a uniform force distribution when clamping the injector, effectively avoiding the possibility of the injector workpiece shaking during processing, thereby ensuring processing accuracy. Attached Figure Description
[0022] Figure 1 This is a perspective view of the present utility model;
[0023] Figure 2 This is a cross-sectional view of the present invention;
[0024] Figure 3 This is a top view of the present invention;
[0025] Figure 4 This is an overall structural diagram of the processing table of this utility model;
[0026] Figure 5 This is a schematic diagram of the clamping bracket of this utility model;
[0027] Figure 6 This is a structural diagram of the threaded cylinder of this utility model.
[0028] Reference numerals in the attached drawings: 1. Machining table; 2. Threaded cylinder; 3. Positioning hole; 4. Clamping bracket; 41. Moving link; 42. Moving seat; 43. Triangular clamping plate; 44. Force plate; 45. Pressure sensor; 5. Moving cavity; 6. Lead screw; 7. Motor; 8. Limiting rod. Detailed Implementation
[0029] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.
[0030] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific implementation examples:
[0032] Reference Figure 1-6 A jig for machining the oil inlet hole of an injector body includes a machining table 1. The top surface of the machining table 1 is provided with clamping brackets 4, and there are two sets of clamping brackets 4. Each clamping bracket 4 includes a moving connecting rod 41. A triangular clamping plate 43 is bolted to the connecting end of the moving connecting rod 41. The triangular clamping plate 43 is triangular in shape, and its clamping surface is V-shaped. The two triangular clamping plates 43 are horizontally aligned. When machining the oil inlet hole of an injector, it is usually necessary to fix the position of the workpiece with a jig to facilitate machining and prevent the workpiece from loosening during machining. The clamping brackets 4 act as jigs for the workpiece and are located on the machining table 1. The clamping brackets 4 mainly consist of two parts: the moving connecting rod 41 and the triangular clamping plate 43. The triangular clamping plate 43 is triangular in shape, and there are two sets of triangular clamping plates. The distance between the two triangular clamping plates 43 can be adjusted by moving them outwards or inwards simultaneously, thus adapting to injectors of different sizes. The triangular clamping plate 43 is the core component of the fixture. It adopts a triangular structure with multiple support points. The stability of the triangular structure ensures the uniform distribution of clamping force, avoiding workpiece shaking or deformation caused by uneven force in traditional fixtures. It works in conjunction with the moving linkage 41 to move and adjust the triangular clamping plate 43, so that the support points can be flexibly adjusted according to the size and shape of the injector, adapting to workpieces of different diameters and shapes. When the injector is placed between the two triangular clamping plates 43, the triangular clamping plate 43 automatically adjusts the position of the support points through its geometric characteristics. The clamping distance is adjusted by moving the bracket. The triangular clamping plate 43 applies a uniform clamping force to the injector, thereby completing the clamping and fixing of the workpiece.
[0033] A movable seat 42 is fixed to the bottom surface of the movable connecting rod 41. A movable cavity 5 is opened on the top surface of the processing table 1. The movable seat 42 is located inside the movable cavity 5 and cooperates with the movable cavity 5. The movable seat 42 and the movable cavity 5 are slidably connected. A lead screw 6 and a limiting rod 8 are respectively installed in the movable cavity 5. The lead screw 6 is located between the two limiting rods 8. The movable seat 42 is sleeved on the surface of the lead screw 6 and the limiting rod 8. A motor 7 is installed at one end of the lead screw 6. The movable seat 42 is threadedly connected to the surface of the lead screw 6. It is worth noting that the bottom of the movable connecting rod 41 is connected to the movable cavity 5 and the lead screw 6 and the limiting rod 8 inside through the movable seat 42. The lead screw 6 is driven by the motor 7. When the lead screw 6 rotates, the movable seat 42 can move linearly along the surface of the lead screw 6 and the limiting rod 8, thereby driving the position adjustment of the triangular clamping plate 43 to clamp or release the workpiece.
[0034] A force-bearing plate 44 is provided at the clamping surface of the triangular clamping plate 43. A pressure sensor 45 is fixed inside the triangular clamping plate 43 and is connected to the force-bearing plate 44. The force-bearing plate 44 is rectangular. To avoid excessive clamping force on the workpiece caused by the triangular clamping plate 43, which could damage the workpiece surface, a force-bearing plate 44 is added at the clamping surface of the triangular clamping plate 43. The force-bearing plate 44 is directly connected to the pressure sensor 45. When the triangular clamping plate 43 clamps and fixes the workpiece, the force-bearing plate 44 is in direct contact with the workpiece surface, while the pressure sensor 45 monitors the magnitude of the clamping force in real time. The sensor converts the clamping force data into... The electrical signal is transmitted to the control system. Based on the feedback data from the pressure sensor 45, the control system determines whether the current clamping force is within the set range. If the clamping force is too large, the control system will automatically adjust the motor 7 to reduce the clamping force. If the clamping force is insufficient, the clamping force will be increased. The adjustment can be achieved by controlling the movement of the triangular clamping plate 43. When clamping the workpiece, the system will automatically complete the clamping operation according to the preset clamping force range without manual intervention, ensuring that the clamping force is within the safe range and avoiding the problem of workpiece surface indentation or deformation due to excessive clamping force. At the same time, it avoids the workpiece shaking or shifting due to insufficient clamping force during processing.
[0035] A threaded cylinder 2 is threaded into the center through hole of the processing table 1. The top surface of the threaded cylinder 2 is provided with a positioning hole 3. The threaded cylinder 2 is selected according to the requirements. When processing in large batches, a threaded cylinder 2 with a suitable hole diameter can be selected so that the positioning hole 3 can initially limit the workpiece to be processed, making it easy for the staff to place the workpiece in the specified position. Then, the triangular clamping plate 43 is used to clamp and fix the placed workpiece. The threaded groove on the surface of the threaded cylinder 2 is threadedly connected to the interface part at the center of the processing table 1. The staff can easily and quickly install or remove the threaded cylinder 2 by holding the hand end at the end of the threaded cylinder 2.
[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An oil inlet hole machining clamp for an oil injector body, comprising a machining table (1), characterized in that: The top surface of the processing table (1) is respectively provided with clamping supports (4), and the clamping supports (4) have two groups in common, the clamping support (4) includes a moving connecting rod (41), the connecting end of the moving connecting rod (41) is bolted with a triangular clamping plate (43), and the triangular clamping plate (43) is triangular, the clamping surface of the triangular clamping plate (43) is provided with a stress plate (44), the bottom surface of the moving connecting rod (41) is fixed with a moving seat (42), and the top surface of the processing table (1) is provided with a moving cavity (5).
2. The fuel inlet hole machining clamp of the fuel injector body according to claim 1, characterized in that: The inside of the triangular clamping plate (43) is fixed with a pressure sensor (45), and the pressure sensor (45) is connected with the stress plate (44), and the stress plate (44) is rectangular.
3. The fuel inlet hole machining clamp of the fuel injector body according to claim 1, characterized in that: The center through hole of the processing table (1) is screwed with a threaded cylinder (2), and the top surface of the threaded cylinder (2) is provided with a positioning hole (3).
4. The fuel inlet hole machining clamp of the fuel injector body according to claim 1, characterized in that: The moving seat (42) is located in the moving cavity (5), and the moving seat (42) and the moving cavity (5) are matched with each other, and the moving seat (42) and the moving cavity (5) are slidably connected.
5. The fuel inlet hole machining clamp of the fuel injector body according to claim 1, characterized in that: The moving cavity (5) is respectively provided with a lead screw (6) and a limiting rod (8), and the lead screw (6) is located between the two limiting rods (8), and the moving seat (42) is sleeved on the surface of the lead screw (6) and the limiting rod (8).
6. The fuel inlet hole machining clamp of the fuel injector body according to claim 5, characterized in that: One end of the lead screw (6) is provided with a motor (7), and the surface of the moving seat (42) and the lead screw (6) are screw connected.
7. The fuel inlet hole machining clamp of the fuel injector body according to claim 1, characterized in that: The clamping surface of the triangular clamping plate (43) is V-shaped, and the positions of the two triangular clamping plates (43) are horizontally flush.