Clamping mechanism for press fitting

Abstract

The clamping mechanism comprises a clamping jaw air cylinder and a base plate, a fixing seat is arranged on the base plate, a collet chuck is detachably arranged on the fixing seat, a discharging area of a cylindrical structure is arranged on the collet chuck, and clamping grooves corresponding to the clamping jaw air cylinder are distributed in the side wall of the collet chuck in the radial direction. A clamping groove is formed in the base plate, the clamping groove is communicated with the discharging area, a clamping arm capable of moving in the radial direction is arranged in the clamping groove, a clamping jaw of the clamping jaw air cylinder is connected with the clamping arm through a connecting arm, and a limiting groove for limiting the moving range of the connecting arm is formed in the base plate. The clamping arms driven by the clamping jaw air cylinders are arranged in the collet chuck, and the stress of the clamping jaw air cylinders is effectively transmitted to the clamping arms of the clamping grooves through the connecting arms, so that components in a discharging area are uniformly clamped, and the concentricity of the components in the assembling process is improved.

Description

Technical Field

[0001] This utility model belongs to the field of new energy vehicle parts assembly, and relates to a clamping mechanism for press fitting. Background Technology

[0002] In the assembly process of the rotating shaft inside the stator of the air conditioning compressor in new energy vehicles, the clamping mechanism plays a crucial role. However, existing clamping mechanisms have many shortcomings. Traditional clamping mechanisms have a relatively simple design and lack structural flexibility, making it impossible to quickly and effectively adapt to different models of rotating shaft components. Due to the differences in the size, shape, and other parameters of various rotating shaft models, a universal clamping method cannot meet diverse needs, resulting in inconvenient disassembly and assembly operations.

[0003] When multiple clamping mechanisms operate simultaneously, the clamping cylinders cannot directly act on the components to ensure simultaneous movement, which can easily cause concentricity problems during the assembly of the rotating shaft. Concentricity is crucial to the performance and stability of the air conditioning compressor. Once concentricity is compromised, it will cause unbalanced forces during the rotation of the shaft, accelerate component wear, and reduce the working efficiency and service life of the air conditioning compressor.

[0004] Therefore, it is necessary to improve existing technologies to overcome their shortcomings. Utility Model Content

[0005] The purpose of this utility model is to provide a clamping mechanism for press fitting, thereby solving at least one technical problem mentioned in the background art.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A clamping mechanism for press fitting includes a gripper cylinder and a base plate. A fixed seat is provided on the base plate, and a collet is detachably mounted on the fixed seat. The collet has a cylindrical feeding area, and gripping grooves corresponding to the gripper cylinder are radially distributed on the side wall of the collet. The gripping grooves communicate with the feeding area, and a radially movable gripping arm is provided in the gripping groove. The gripper of the gripper cylinder and the gripping arm are connected by a connecting arm, and a limiting groove is provided on the base plate to limit the movement range of the connecting arm.

[0008] As a further improvement of one embodiment of the present invention, the gripper cylinder is a three-jaw cylinder.

[0009] As a further improvement of one embodiment of the present invention, the collet and the fixed base are connected by bolts, and the collet is provided with mounting holes for the bolts to pass through.

[0010] As a further improvement of one embodiment of the present utility model, the mounting hole has a large hole and a small hole that are interconnected, and an overlapping platform for placing bolts is provided in the mounting hole surrounding the small hole.

[0011] As a further improvement of one embodiment of the present invention, the diameter of the bolt head is smaller than the diameter of the large hole.

[0012] As a further improvement of one embodiment of the present invention, a pair of photoelectric sensors are provided on the substrate, and a through hole is provided on the fixing base for the light from the photoelectric sensors to pass through.

[0013] As a further improvement of one embodiment of the present invention, the base plate is provided with a protective cover that covers the fixing seat, the collet, the clamping arm and part of the connecting arm, and the protective cover is provided with an opening corresponding to the clamping groove.

[0014] The above technical solution has the following advantages: the design of the mounting hole structure allows the collet to be quickly disassembled and installed from the fixed seat when the bolts are loosened, which meets the disassembly and assembly efficiency requirements when pressing different models of rotating shafts. After initially loosening the bolts, the collet can be removed and a new collet can be installed simply by rotating it, making the disassembly and assembly operation convenient. The collet is equipped with a clamping arm driven by a gripper cylinder, and the force of the gripper cylinder is effectively transmitted to the clamping arm of the clamping slot by the connecting arm, thereby uniformly clamping the parts in the feeding area and improving the concentricity during assembly. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0017] Figure 1 A three-dimensional structural diagram of this utility model.

[0018] Figure 2A three-dimensional structural diagram (hidden protective cover) is provided for this utility model.

[0019] Figure 3 for Figure 2 A diagram showing the view from below.

[0020] Figure 4 This is a three-dimensional structural diagram of the collet provided by this utility model.

[0021] Figure 5 for Figure 4 A top-down view.

[0022] Figure 6 A schematic diagram of the application status of this utility model is provided.

[0023] In the picture:

[0024] 100 - Clamping mechanism; 101 - Bearing plate; 102 - Vertical support;

[0025] 1-Gripper cylinder;

[0026] 2-Substrate;

[0027] 3-Fixed base;

[0028] 4-Cone clamp; 41-Discharge area; 42-Clamping groove; 43-Mounting hole; 431-Large hole; 432-Small hole; 433-Overlapping platform;

[0029] 5-Clamping arm;

[0030] 6-Connecting arm;

[0031] 7-Protective cover. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0034] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0035] Example

[0036] See Figures 1-6 As shown, a clamping mechanism for press fitting includes a gripper cylinder 1 and a base plate 2. A fixed seat 3 is provided on the base plate 2, and a collet 4 is detachably mounted on the fixed seat 3. The collet 4 can be adapted to accommodate different types of rotating shafts by assembling and disassembling the collet. The collet 4 has a cylindrical feeding area 41. Clamping grooves 42, corresponding to the gripper cylinder 1, are radially distributed on the side wall of the collet 4. The clamping grooves 42 communicate with the feeding area 41, and radially movable clamping arms 5 are provided within the clamping grooves 42. The gripper of the gripper cylinder 1 and the clamping arm 5 are connected by a connecting arm 6. Through this structural design, the force from the gripper cylinder 1 is effectively transmitted to the clamping arm 5 in the clamping groove by the connecting arm 6, thereby uniformly clamping the components in the feeding area 41 and improving the concentricity during assembly.

[0037] The base plate 2 is provided with a limiting groove that limits the movement range of the connecting arm 6, effectively ensuring the accuracy and stability of the clamping action. Among them, the gripper cylinder 1 is a three-jaw cylinder, which can apply force evenly and better ensure the concentricity of the rotating shaft during the clamping process, avoiding the problem of concentricity deviation of the rotating shaft caused by improper clamping.

[0038] The collet 4 and the fixing base 3 are connected by bolts. The collet 4 has a specially designed mounting hole 43 for the bolt to pass through. This mounting hole 43 has a unique design with interconnected large hole 431 and small hole 432. The mounting hole 43, around which the small hole 432 is located, forms an overlapping platform 433 for the bolt. During assembly, the bolt can be stably placed on this overlapping platform 433. Since the bolt head diameter is smaller than the diameter of the large hole 431, this ingenious design allows the bolt to pass smoothly through the large hole 431 and engage with the overlapping platform 433 during installation, achieving a secure connection between the collet 4 and the fixing base 3. The design of the mounting hole 43 allows the collet 4 to be quickly removed from the fixed base 3 when the bolts are loosened, which meets the disassembly and assembly efficiency requirements when pressing different models of rotating shafts. After initially loosening the bolts, the collet 4 can be removed and a new collet 4 can be installed simply by rotating it. The disassembly and assembly operation is convenient and effectively solves the problems of inconvenient disassembly and assembly of traditional clamping mechanisms and difficulty in adapting to various accessories, thereby improving the efficiency and quality of assembly operations.

[0039] In this embodiment, a pair of photoelectric sensors are provided on the substrate 2, and the mounting base 3 is provided with through holes for light from the photoelectric sensors to pass through. The photoelectric sensors can detect the assembly status of the mounting base 3 by light, such as whether the position is accurate or whether there is any offset, thus ensuring precise assembly.

[0040] In this embodiment, a protective cover 7 is provided on the substrate 2. This protective cover 7 covers the fixing base 3, the collet 4, the clamping arm 5, and part of the connecting arm 6, with openings only at the corresponding clamping grooves 42. Its function is to prevent dust, impurities, and other foreign objects from entering critical parts during the assembly process, avoiding damage or interference to the components and ensuring the stable operation of the clamping mechanism.

[0041] In this embodiment, multiple clamping mechanisms can be arranged side by side, such as... Figure 6 As shown, three clamping mechanisms 100 are arranged side by side on the same base plate 2. The base plate 2 is fixed to the support plate 101 by a vertical bracket 102. The gripper cylinders on the clamping mechanisms 100 are fixed to the support plate 101 by a connecting plate, so that the clamping mechanisms are firmly installed on the support plate 101. Through the above structural design, multiple clamping mechanisms can move with the support plate 101. When the support plate 101 is installed on the stamping device, the three clamping mechanisms can be pressed simultaneously.

[0042] This invention is highly innovative in the field of assembling air conditioning compressors for new energy vehicles. Its unique mounting hole structure between the collet and the fixed base features a large hole and a small hole that connect and overlap, with the bolt head smaller than the diameter of the large hole. This allows for quick assembly and disassembly by rotating the collet after loosening the bolt, significantly improving efficiency when pressing different models of rotating shafts and making operation convenient.

[0043] Furthermore, the clamping arms, driven by cylinders, are installed inside the collet, and the connecting arms precisely transmit force, ensuring that the clamping arms act evenly on the components in the unloading area. This effectively solves the problem of poor concentricity in existing clamping mechanisms when multiple units are running simultaneously, ensuring precise positioning of the rotating shaft during assembly.

[0044] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0045] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0046] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0047] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A clamping mechanism for press fitting, characterized by: The utility model relates to a chucking device for a cylindrical workpiece, comprising a clamping jaw cylinder and a base plate, the base plate is provided with a fixing seat, the fixing seat is detachably provided with a chuck, the chuck is provided with a cylindrical structure's feeding area, the sidewall of chuck is radially distributed with the clamping slot corresponding with clamping jaw cylinder, the clamping slot is communicated with feeding area, the clamping slot is provided with the radially movable clamping arm, the clamping jaw of clamping jaw cylinder is connected with clamping arm through the link arm, the base plate is provided with the limiting slot of the range of movement of link arm.

2. The clamping mechanism of claim 1, wherein: The clamping jaw cylinder is a three-jaw cylinder.

3. The clamping mechanism of claim 1, wherein: The chuck and the fixing seat are connected through bolts, and the chuck is provided with mounting holes for the bolts to pass through.

4. The clamping mechanism of claim 3, wherein: The mounting hole has a large hole and a small hole that are in communication with each other, and the small hole is provided with a lap joint platform for placing the bolt in the mounting hole.

5. The clamping mechanism of claim 4, wherein: The diameter of the bolt head of the bolt is smaller than the diameter of the large hole.

6. The clamping mechanism of claim 1, wherein: The base plate is provided with a pair of photoelectric sensors, and the fixing seat is provided with a through hole through which the light of the photoelectric sensor passes.

7. The clamping mechanism of claim 1, wherein: The base plate is provided with a protective cover that covers the fixing seat, the chuck, the clamping arm, and part of the link arm, and the protective cover is provided with an opening corresponding to the clamping slot.

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