A clamping device for machining an oil pump cover
The innovative clamping device solves the problems of poor adaptability and inconvenience in changing the shape of the clamping plate during the processing of oil pump covers. It enables rapid adaptation and precise clamping of pump covers of different shapes, improves processing efficiency and accuracy, and extends the life of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING TENGYUAN OIL PUMP MFG CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-06-09
Smart Images

Figure CN224333983U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oil pump cover processing technology, and in particular to a clamping device for processing oil pump covers. Background Technology
[0002] The oil pump is a crucial component in the lubrication system of an internal combustion engine. As a key part of the oil pump, its pump cover requires high-precision machining to ensure the pump's sealing and operational performance. The machining process for the oil pump cover typically involves turning, milling, and drilling. To ensure machining accuracy and efficiency, the workpiece needs to be securely fixed to the machining equipment using clamping devices.
[0003] In existing technologies, the clamping plates of fixtures used for machining oil pump covers are mostly fixed in an arc shape to accommodate the common round pump covers on the market. However, with the diversification of oil pump cover designs, square or other non-circular pump covers are becoming increasingly common, making it difficult to apply such fixed-shape clamping plates, resulting in insufficient versatility of the fixtures. Furthermore, traditional clamping plates are usually installed in a fixed manner or connected by bolts, which not only makes replacement cumbersome and time-consuming but also increases the difficulty of adjustments during production, reducing processing efficiency. These shortcomings limit the adaptability of the fixtures to pump covers of different shapes, making it difficult to meet the diverse and efficient demands of modern oil pump cover machining. Utility Model Content
[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of this section, the abstract and the title of this utility model. Such simplifications or omissions shall not be used to limit the scope of this utility model.
[0005] In view of the problems existing in the above and / or prior art, the present invention is proposed.
[0006] Therefore, the present invention aims to solve the technical problems of existing clamps having fixed clamp plate shapes, poor adaptability, and inconvenient replacement.
[0007] To solve the above technical problems, this utility model provides the following technical solution: a clamping device for processing an oil pump cover, comprising a base, a processing table at the top of the base, a cavity at the center of the base, symmetrical moving slots on the left and right sides of the cavity, a moving block slidably connected inside each of the two moving slots, a connecting rod fixedly installed at the top of each of the two moving blocks, the tops of the two connecting rods respectively penetrating the two moving slots and extending into the processing table to be fixedly connected to a fixing block, a slot opening inside each of the two fixing blocks, a snap-fit assembly installed above each of the two slots, an insert plate inserted into each of the two slots, a clamping plate fixedly connected to the opposite surfaces of the two insert plates extending to the outside of the fixing block, and a driving assembly drivingly connecting the two moving blocks.
[0008] As a preferred embodiment of the clamping device for processing the oil pump cover of the present invention, the driving assembly includes a dual-axis motor disposed inside the cavity. The output ends of the dual-axis motor on both the left and right sides are connected to lead screws via couplings. The opposite ends of the two lead screws extend into the two moving slots respectively, and the two moving blocks are threadedly connected to the outer surfaces of the two lead screws respectively.
[0009] As a preferred embodiment of the clamping device for processing the oil pump cover of this utility model, wherein: both insert plates are provided with slots inside, the two sets of clamping components include clamping plates inserted into the two slots, the tops of the two clamping plates respectively penetrate through the inner top walls of the two fixing blocks and extend to the outside of them and are fixedly connected to pull plates, and telescopic springs are symmetrically installed on the left and right sides of the bottom of the two pull plates, and the bottom ends of the two sets of telescopic springs are fixedly connected to the top walls of the two fixing blocks respectively.
[0010] As a preferred embodiment of the clamping device for processing the oil pump cover of the present invention, the bottom end of the clamping plate is disposed in the slot, and there is a certain gap between the bottom of the clamping plate and the inner bottom wall of the slot, and the insertion end of the insert plate is configured as an inclined surface.
[0011] As a preferred embodiment of the clamping device for processing the oil pump cover of this utility model, the top of each of the two moving slots is provided with a receiving slot, and baffles are fixedly installed on the left and right sides of the two connecting rods, and the two sets of baffles are slidably connected in the two sets of receiving slots respectively.
[0012] In a preferred embodiment of the clamping device for machining the oil pump cover of this utility model, both lead screws are rotatably connected to the inner wall of the base via bearings.
[0013] The beneficial effects of this invention are as follows: This device, through its innovative structural design, solves the problems of fixed clamping plate shape, poor adaptability, and inconvenient replacement in traditional fixtures, significantly improving processing efficiency and flexibility. Its replaceable clamping plate design, combined with the inclined insert plate and snap-fit assembly, can quickly adapt to various shapes of oil pump covers, such as round and square, meeting diverse processing needs and reducing the time cost of fixture adjustment and replacement. The drive assembly adopts an automated drive method using a dual-axis motor and lead screw, ensuring uniform and precise clamping force and avoiding workpiece displacement or deformation that may occur with manual clamping, thus guaranteeing processing accuracy. The compact structure of the cavity and moving slot inside the base optimizes the space utilization of the device. Simultaneously, the protective design of the baffle and storage slot effectively prevents processing debris from entering the moving slot, protecting internal parts and extending the device's service life. Furthermore, the telescopic spring and pull plate design of the snap-fit assembly simplifies the installation and disassembly of the clamping plates, making operation convenient and reducing the difficulty of manual operation. Overall, this clamping device has a simple structure, strong versatility, and high efficiency in operation. It can significantly improve the precision, efficiency, and economy of oil pump cover machining and is suitable for the diversified production needs of modern manufacturing. Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a top view of the present invention;
[0017] Figure 3 This is an enlarged schematic diagram of the structure of the snap-fit component of this utility model. Detailed Implementation
[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0020] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.
[0021] Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.
[0022] Example
[0023] Reference Figures 1-3 This utility model provides a clamping device for machining oil pump covers, aiming to solve the problems of fixed clamping plate shape, poor adaptability, and inconvenient replacement in existing fixtures. The device is centered on a base 1, which serves as the supporting structure for the entire clamping device. Made of robust materials, the base 1 can be firmly installed on machining equipment and withstand vibrations and forces generated during turning, milling, and other machining processes, ensuring the overall stability of the device. A machining table 2 is located at the top of the base 1. This flat machining platform is used to place the oil pump cover workpiece. Its smooth surface facilitates workpiece positioning and provides movement space for the clamping components, ensuring precise clamping without damaging the workpiece surface. A cavity 101 is formed at the center of the base 1, providing installation space for the drive assembly 9 and protecting it from external dust and machining debris. The rational spatial design also optimizes the compactness of the device.
[0024] On the left and right sides of the cavity 101 of the base 1, two symmetrical moving grooves 102 are formed. These two moving grooves 102 are the sliding tracks of the moving block 3, which can guide the moving block 3 to move smoothly in a straight line and avoid deviation, thereby ensuring the accuracy of the clamping action. The top of the moving groove 102 is also provided with a storage groove 103. The storage groove 103 cooperates with the baffles 10 on both sides of the connecting rod 4. The baffles 10 are slidably connected in the storage groove 103, forming a shield for the top of the moving groove 102, effectively preventing ash or debris generated during processing from falling into the moving groove 102, protecting the internal parts (such as the lead screw 902) from wear, and extending the service life of the device. The moving blocks 3 are slidably connected inside the two moving grooves 102. The moving blocks 3 are the driving force transmission components. Through their threaded connection with the lead screw 902, they convert the rotational motion into linear motion, driving the clamping structure above to move and achieve precise clamping of the workpiece.
[0025] Each movable block 3 has a connecting rod 4 fixedly installed at its top. The connecting rod 4 passes through the movable slot 102 and extends into the processing table 2, with a fixed block 5 fixedly connected to its top. The function of the connecting rod 4 is to transmit the movement of the movable block 3 to the fixed block 5, ensuring the stability and synchronization of the clamping structure. Its rigid design can withstand the clamping force and avoid deformation. The fixed block 5 is a key component of the clamping device. It has a slot 501 inside for inserting the insert plate 7, thereby fixing the clamping plate 8. The design of the slot 501 facilitates the quick installation and removal of the clamping plate 8 and supports clamping plates 8 of different shapes and sizes (such as square or round), improving the versatility of the device. The top of the fixed block 5 is also equipped with a snap-fit assembly 6, which includes a snap-fit plate 601, a pull plate 602, and a telescopic spring 603. The snap-fit plate 601 is inserted into the snap-fit slot 701 of the insert plate 7. The top of the snap-fit plate 601 is connected to the outside of the fixed block 5 through the pull plate 602, and the bottom maintains a certain gap with the inner bottom wall of the slot 501. Telescopic springs 603 are symmetrically installed on the left and right sides of the bottom of the pull plate 602. The bottom end of the telescopic spring 603 is fixedly connected to the top wall of the fixing block 5. The spring force presses the card plate 601 into the card slot 701 to achieve the limiting and fixing of the insert plate 7.
[0026] The insert plate 7 serves as a bridge connecting the clamping plate 8 and the fixing block 5. Its insertion end is designed with a bevel for easy insertion into the slot 501. During installation, the operator inserts the insert plate 7 into the slot 501. The beveled tip first passes through the gap between the clamping plate 601 and the bottom wall of the slot 501. As the insert plate 7 is inserted deeper, its cross-section expands, gradually lifting the clamping plate 601. When the insert plate 7 is fully inserted, the rebound force of the telescopic spring 603 causes the clamping plate 601 to spring back into the slot 701, completing the quick fixation of the clamping plate 8. For disassembly, simply pull the pull plate 602 to release the clamping plate 601; the operation is simple and efficient. The insert plate 7 has a slot 701 inside, which precisely matches the clamping plate 601 to ensure the stability of the clamping plate 8. The clamping plate 8 is the component that directly contacts the oil pump cover. Its opposite side is used to clamp the workpiece. The clamping plate 8 in the figure is square, but different sizes and shapes of clamping plates 8 can be replaced according to needs. Simply weld an insert plate 7 that fits the slot 501 onto the back of the clamping plate. This design greatly enhances the device's adaptability to round, square, or other irregularly shaped pump covers, meeting diverse processing needs.
[0027] To achieve automatic movement and clamping of the clamping plate 8, the device is equipped with a drive assembly 9, which includes a dual-axis motor 901 housed inside the cavity 101. The output ends of the dual-axis motor 901 on both sides are connected to lead screws 902 via couplings. The opposing ends of the two lead screws 902 extend into two moving slots 102 and are rotatably connected to the inner wall of the base 1 via bearings 903. The bearings 903 reduce friction and ensure smooth rotation of the lead screws 902. Two moving blocks 3 are threaded onto the outer surfaces of the two lead screws 902. When the dual-axis motor 901 is started, the lead screws 902 rotate, driving the moving blocks 3 to move along the moving slots 102. This, in turn, drives the clamping plate 8 closer to or further away from the workpiece via the connecting rod 4 and the fixing block 5, achieving precise clamping or loosening. The automated design of the drive assembly 9 improves clamping efficiency, reduces the tedium of manual operation, and ensures the uniformity and stability of the clamping force.
[0028] In summary, this clamping device achieves efficient and flexible clamping of the oil pump cover through the coordinated operation of the base 1, processing table 2, cavity 101, moving groove 102, moving block 3, connecting rod 4, fixing block 5, slot 501, snap-fit assembly 6, insert plate 7, clamping plate 8, and drive assembly 9. The device has a compact structure, is easy to operate, supports quick replacement of clamping plates 8 of different shapes, adapts to various pump cover processing needs, and extends the service life of internal parts through the protective design of baffle 10 and storage groove 103. It is suitable for the high precision and high efficiency requirements of modern oil pump cover processing.
[0029] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.
[0030] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.
[0031] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.
[0032] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A clamping device for machining an oil pump cover, characterized in that: The system includes a base (1), a processing table (2) at the top of the base (1), a cavity (101) at the center of the base (1), and symmetrical moving slots (102) on the left and right sides of the cavity (101). Moving blocks (3) are slidably connected inside the two moving slots (102). Connecting rods (4) are fixedly installed at the top of the two moving blocks (3). The tops of the two connecting rods (4) pass through the two moving slots (102) and extend into the processing table (2) to be fixedly connected to a fixing block (5). Slots (501) are opened inside the two fixing blocks (5). A snap-fit assembly (6) is installed above the two slots (501). Insert plates (7) are inserted into the two slots (501). The opposite surfaces of the two insert plates (7) extend to the outside of the fixing block (5) and are fixedly connected to a clamping plate (8). A drive assembly (9) is connected between the two moving blocks (3).
2. The clamping device for machining the oil pump cover according to claim 1, characterized in that: The drive assembly (9) includes a dual-axis motor (901) disposed inside the cavity (101). The output ends of the dual-axis motor (901) on both the left and right sides are connected to lead screws (902) via couplings. The opposite ends of the two lead screws (902) extend into the two moving slots (102) respectively, and the two moving blocks (3) are threadedly connected to the outer surfaces of the two lead screws (902) respectively.
3. The clamping device for machining the oil pump cover according to claim 2, characterized in that: Both insert plates (7) have slots (701) inside. The two sets of snap-fit components (6) include a snap plate (601) inserted into the two slots (701). The top of the two snap plates (601) passes through the inner top wall of the two fixing blocks (5) and extends to the outside of them, where a pull plate (602) is fixedly connected. The left and right sides of the bottom of the two pull plates (602) are symmetrically equipped with telescopic springs (603), and the bottom ends of the two sets of telescopic springs (603) are fixedly connected to the top wall of the two fixing blocks (5).
4. The clamping device for machining the oil pump cover according to claim 3, characterized in that: The bottom end of the card plate (601) is located inside the slot (501), and there is a certain gap between the bottom of the card plate (601) and the inner bottom wall of the slot (501). The insertion end of the insert plate (7) is set as an inclined surface.
5. The clamping device for machining the oil pump cover according to claim 4, characterized in that: The top of each of the two moving slots (102) is provided with a storage slot (103), and baffles (10) are fixedly installed on the left and right sides of the two connecting rods (4), and the two sets of baffles (10) are slidably connected in the two sets of storage slots (103).
6. The clamping device for machining the oil pump cover according to claim 5, characterized in that: Both lead screws (902) are rotatably connected to the inner wall of the base (1) via bearings (903).