Clamp for transmission gear of fuel injection pump

Abstract

The invention belongs to the field of machine tool machining, and relates to a fuel injection pump transmission gear clamp, a key groove in a supporting seat is matched with a workpiece boss to ensure the phase, a taper sleeve and an inverted taper centering hole are matched with a disc spring to achieve accurate centering, an upper pull rod is connected with a pull claw to be stably clamped with a pull rod, and an automatic feeding and discharging mechanism achieves automatic machining. The clamp is exquisite in design, the double precision of workpiece phase and centering is guaranteed, and the machining quality of the fuel injection pump transmission gear is improved; manual intervention is reduced through automatic feeding and discharging, and the machining efficiency is remarkably improved; the structure is stable and reliable, maintenance is easy, and production cost is reduced; the method is suitable for batch machining, meets the urgent requirements of the modern manufacturing industry for high precision and high efficiency, provides powerful support for precise manufacturing of the fuel injection pump transmission gear, and promotes technical progress and upgrading of related industries.

Description

Technical Field

[0001] The invention belongs to the field of machine tool processing and relates to a fuel injection pump transmission gear fixture. Background Art

[0002] With the rapid development of modern machinery manufacturing industry, fuel injection pump transmission gear is an important part of internal combustion engine, and its manufacturing accuracy and efficiency have a vital impact on the performance and stability of internal combustion engine. In the processing of fuel injection pump transmission gear, gear hobbing is a key process, which directly determines the gear tooth accuracy and surface quality.

[0003] There are some problems in the design and use of traditional fuel injection pump transmission gear fixtures. Especially for parts with phase requirements, the fixture design often cannot meet the high-precision processing requirements. On the one hand, the centering method of traditional fixtures usually adopts a simple hole-shaft match. For workpieces with inverted taper centering holes, this centering method often cannot ensure the accuracy and stability of centering, thus affecting the processing accuracy. On the other hand, traditional fixtures have insufficient automation, making it difficult to achieve fast and accurate loading and unloading operations, reducing processing efficiency.

[0004] In addition, with the increasing demand for processing special-shaped parts, especially for parts with phase requirements, the fixture design needs to be more flexible and precise. Traditional fixtures are often unable to adapt to such diverse processing requirements, limiting the development of fuel injection pump transmission gear processing technology. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a fuel injection pump transmission gear fixture that meets the high-precision and high-efficiency processing requirements, especially for the processing of special-shaped parts with phase requirements.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fuel injection pump transmission gear fixture, comprising a base, a positioning seat arranged on the base, and a support seat arranged on the positioning seat, the support seat is provided with a keyway, the workpiece is provided with a boss, the boss on the workpiece cooperates with the keyway on the support seat to ensure the phase requirement of the workpiece; when the fixture is installed on a workbench and rotates to a specific phase with the workbench, the boss on the workpiece and the keyway on the support seat can be accurately aligned.

[0007] Optionally, a tapered sleeve is also provided on the workpiece, a pressure cover is provided on the periphery of the tapered sleeve, and an upper pull rod is provided in the middle of the pressure cover; a step is provided on the upper part of the upper railing, a disc spring is provided between the step and the tapered sleeve, and the tapered sleeve is provided at the centering hole of the workpiece, and centering is achieved by cooperating with the force applied by the disc spring and the inverted taper centering hole of the workpiece.

[0008] Optionally, the upper pull rod is fixed to the gland by a first hexagon socket head screw.

[0009] Optionally, the upper pull rod passes through the cone sleeve, the workpiece, the support seat, and the positioning seat in sequence, and is connected to a pull rod arranged in the middle of the base through a pull claw in the middle part of the base.

[0010] Optionally, the support seat is further provided with 6 holes for installing the second hexagon socket head screws.

[0011] Optionally, the positioning seat is fixed to the base by a third hexagon socket head screw.

[0012] Optionally, a braking screw is also provided on the base.

[0013] Optionally, an automatic loading and unloading mechanism is also included to automatically place the workpiece on the support seat and remove it from the support seat to achieve automated processing.

[0014] Optionally, the automatic loading and unloading mechanism is a robot or other automated device for grabbing and placing workpieces.

[0015] Optionally, both the support seat and the positioning seat are provided with precise positioning and fixing structures to ensure the stability and accuracy of the workpiece during the processing.

[0016] The beneficial effects of the present invention are:

[0017] 1) The present invention adopts a unique centering mechanism design, which can accurately match the workpiece with a reverse taper centering hole, effectively avoiding the processing error caused by the unstable centering of the traditional fixture. This high-precision centering method ensures the tooth profile accuracy and surface quality of the injection pump transmission gear during the gear hobbing process, thereby improving the overall performance and stability of the internal combustion engine.

[0018] 2) The fixture of the present invention integrates an advanced automatic loading and unloading mechanism, which can realize the fast and accurate clamping and unloading of workpieces, greatly reducing manual intervention and improving production efficiency. This automated design not only reduces the labor intensity of workers, but also reduces processing errors caused by human factors, ensuring the consistency and reliability of the processing process.

[0019] 3) The present invention is aimed at special-shaped parts with phase requirements. The fixture can be easily adjusted to adapt to workpieces of different shapes and sizes through modular design, greatly enhancing its versatility and flexibility. This design enables the fixture to quickly adapt to market changes, meet users' diverse processing needs, and enhance the market competitiveness of enterprises.

[0020] 4) Due to the improved processing accuracy and automation, the fixture performs well in reducing scrap rate and shortening processing cycle, thus effectively reducing production costs. At the same time, the durability and easy maintenance of the fixture also reduce long-term operating costs, bringing significant economic benefits to the enterprise.

[0021] 5) The fuel injection pump transmission gear fixture of the present invention not only solves the technical problems in the current processing process, but also provides new ideas and methods for fixture design in related fields. Its innovative design concept and technical implementation are expected to promote technological progress and industrial upgrading of the entire machinery manufacturing industry.

[0022] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 A schematic diagram of a workpiece of the present invention;

[0026] Figure 3 It is a schematic diagram of the cone sleeve of the present invention;

[0027] Figure 4 A top view of the support base of the present invention;

[0028] Figure 5 It is an axonometric view of the support seat of the present invention.

[0029] Figure numerals: upper pull rod 1, first hexagonal cylindrical head angle screw 2, disc spring 3, pressure cover 4, tapered sleeve 5, workpiece 6, second hexagonal cylindrical head angle screw 7, support seat 8, positioning seat 9, third hexagonal cylindrical head angle screw 10, pull claw 11, pull rod 12, brake screw 13, base 14. DETAILED DESCRIPTION

[0030] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0031] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0032] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] See also Figure 1 to Figure 5 , is a fuel injection pump transmission gear fixture, including the following components (see the accompanying drawings for reference numerals Figure 1 ):

[0034] Base 14: As the supporting base of the entire fixture, the base 14 is provided with components such as a positioning seat 9 and a pull rod 12.

[0035] Positioning seat 9: fixed on the base 14 by a third hexagon socket head screw 10, used for accurately positioning the supporting seat 8.

[0036] Support seat 8: It is arranged on the positioning seat 9. The support seat 8 is provided with a keyway for cooperating with the boss on the workpiece 6 to ensure the phase requirement of the workpiece. The support seat 8 is also provided with 6 holes for installing the second hexagon socket head screw 7 to further fix and position the workpiece 6.

[0037] Workpiece 6: The fuel injection pump transmission gear to be processed, which is provided with a boss and a centering hole. The boss cooperates with the keyway on the support seat 8 to ensure accurate phase; the centering hole is used to cooperate with the taper sleeve 5 to achieve centering.

[0038] Taper sleeve 5: It is arranged at the centering hole of workpiece 6, and its periphery is covered by pressure cover 4. Taper sleeve 5 cooperates with the inverted taper centering hole of workpiece 6, and the centering is achieved by the force applied by disc spring 3.

[0039] Gland 4: An upper pull rod 1 is arranged in the middle, a step is arranged on the upper part of the upper pull rod 1, and a disc spring 3 is arranged between the step and the cone sleeve 5. The gland 4 is fixed on the upper pull rod 1 by a first hexagon socket head screw 2.

[0040] Upper pull rod 1: passes through the cone sleeve 5, the workpiece 6, the support seat 8, and the positioning seat 9 in sequence, and is connected to the pull rod 12 through the pull claw 11 in the middle part of the base 14. The upper pull rod 1 plays the role of transmitting clamping force and positioning.

[0041] Braking screw 13: arranged on the base 14, used to lock the clamp when necessary to prevent it from moving or rotating.

[0042] Automatic loading and unloading mechanism (not shown): used to automatically place the workpiece 6 on the support seat 8 and remove it from the support seat 8 to achieve automatic processing. The automatic loading and unloading mechanism can be a robot or other automated devices.

[0043] 3. Working Principle

[0044] Clamping workpiece:

[0045] The workpiece 6 is placed on the support seat 8 by an automatic loading and unloading mechanism.

[0046] The boss on the workpiece 6 cooperates with the keyway on the support seat 8 to ensure accurate phase.

[0047] Insert the tapered sleeve 5 into the centering hole of the workpiece 6 , then cover the pressure cover 4 , and fix the pressure cover 4 on the upper pull rod 1 by the first hexagon socket head screw 2 .

[0048] The disc spring 3 applies force between the step of the upper pull rod 1 and the tapered sleeve 5, so that the tapered sleeve 5 and the inverted tapered centering hole of the workpiece 6 are closely matched to achieve centering.

[0049] Processing workpiece:

[0050] When the fixture rotates to a specific phase with the workbench, the boss on the workpiece 6 and the keyway on the support seat 8 can be accurately aligned to ensure processing accuracy.

[0051] The processing equipment processes the workpiece 6, such as gear milling, gear grinding, etc.

[0052] Unloading the workpiece:

[0053] After the processing is completed, the workpiece 6 is removed from the support seat 8 by the automatic loading and unloading mechanism.

[0054] Loosen the first hexagon socket head screw 2, remove the pressure cover 4 and the taper sleeve 5, and prepare for the next clamping of the workpiece.

[0055] The fuel injection pump transmission gear fixture of this embodiment ensures the stability and accuracy of the workpiece during the processing through precise positioning and fixing structure. At the same time, through the cooperation of the automatic loading and unloading mechanism, automated processing is realized, and the processing efficiency and production benefits are improved. The fixture has a simple structure and is easy to operate, and is suitable for batch processing and production of fuel injection pump transmission gears.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A fuel injection pump transmission gear fixture, characterized in that: It includes a base, a positioning seat arranged on the base, and a supporting seat arranged on the positioning seat, the supporting seat is provided with a keyway, the workpiece is provided with a boss, and the boss on the workpiece cooperates with the keyway on the supporting seat to ensure the phase requirement of the workpiece; When the fixture is mounted on the workbench and rotated to a specific phase with the workbench, the boss on the workpiece and the keyway on the support seat can be accurately aligned.

2. The fuel injection pump transmission gear fixture according to claim 1, characterized in that: The workpiece is also provided with a cone sleeve, the outer periphery of the cone sleeve is provided with a pressure cover, and the middle of the pressure cover is also provided with an upper pull rod; A step is provided on the upper part of the upper railing, a disc spring is provided between the step and the tapered sleeve, the tapered sleeve is provided at the centering hole of the workpiece, and centering is achieved by the force applied by the disc spring and the inverted tapered centering hole of the workpiece.

3. The fuel injection pump transmission gear fixture according to claim 2, characterized in that: The upper pull rod is fixed on the gland by a first hexagon socket head screw.

4. The fuel injection pump transmission gear fixture according to claim 2, characterized in that: The upper pull rod passes through the cone sleeve, the workpiece, the support seat and the positioning seat in sequence, and is connected with a pull rod arranged in the middle of the base through a pull claw in the middle part of the base.

5. The fuel injection pump transmission gear fixture according to claim 1, characterized in that: The support seat is also provided with 6 holes for installing the second hexagon socket head screws.

6. The fuel injection pump transmission gear fixture according to claim 1, characterized in that: The positioning seat is fixed on the base through the third hexagonal cylindrical head screw.

7. The fuel injection pump transmission gear fixture according to claim 1, characterized in that: A braking screw is also arranged on the base.

8. The fuel injection pump transmission gear fixture according to claim 1, characterized in that: The utility model also comprises an automatic loading and unloading mechanism, which is used for automatically placing the workpiece on the supporting seat and removing it from the supporting seat to realize automatic processing.

9. The fuel injection pump transmission gear fixture according to claim 8, characterized in that: The automatic loading and unloading mechanism is a robot or other automated device used to grab and place workpieces.

10. The fuel injection pump transmission gear fixture according to claim 1, characterized in that: The support seat and the positioning seat are both equipped with precise positioning and fixing structures to ensure the stability and accuracy of the workpiece during processing.

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