Precision machining tool for plug pin

Abstract

The utility model relates to a plug pin precision machining tool which comprises a tool base and further comprises a first driving source fixedly arranged on the tool base and used for providing lifting driving force and extrusion power at the same time, and a second driving source fixedly arranged on the tool base and used for providing lifting driving force and extrusion power at the same time. The first placing blocks are arranged on two sides of the first driving source in a bijection manner and are used for placing a to-be-processed bolt; and the extrusion clamping seat is arranged on one side of the first placing block and is used for carrying out secondary positioning on one end of the to-be-processed bolt while limiting the lifting of the first driving source in the vertical direction. According to the tool used in the precision machining process of the plug pin, accurate positioning and stable clamping of the plug pin can be achieved, reliable auxiliary supporting and power transmission are provided in the machining process, and the machining precision and efficiency of the plug pin and the product quality are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of latch processing, in particular to a tool for precise processing of latches. Background Art

[0002] As a critical component widely used in mechanical connection and positioning, latches face numerous challenges in their machining accuracy, directly impacting the performance and reliability of the entire mechanical system. Traditional latch machining often faces numerous challenges due to the lack of specially designed high-precision tooling.

[0003] Ordinary tooling is difficult to achieve multi-directional and precise positioning of the latch, which makes it easy for the latch to have position deviations during the processing. For example, in processing steps such as drilling and grinding, inaccurate positioning will make it difficult to ensure the accuracy of key dimensions such as the aperture and cylindricity of the latch, thereby affecting the matching accuracy of the latch with other components and reducing the stability and reliability of the entire mechanical device. Moreover, the clamping method of traditional tooling is single, and the clamping force is uneven or insufficient. During processing, the latch may become loose or displaced, which not only causes processing errors, but may even damage the tool or processing equipment, increasing production costs and production cycles. In addition, some complex latch processing processes require the application of a force of a specific direction and magnitude to the latch during the processing to ensure processing quality, but existing tooling often cannot meet this requirement, limiting the innovation and development of the latch processing process. Therefore, it is of extremely important practical significance to develop a tooling for pin precision processing that can solve the above problems. Summary of the Invention

[0004] The purpose of the present utility model is to provide a tool for use in the precision machining of latches, which can achieve accurate positioning and stable clamping of the latches, and provide reliable auxiliary support and power transmission during the machining process, thereby effectively improving the precision, efficiency and product quality of the latch machining, and ensuring that the latches meet the strict usage requirements of various precision mechanical devices.

[0005] To achieve the above technical solutions, the technical scheme of the utility model is as follows: a pin precision machining tool mainly comprises a tool base, a first driving source, a first placing block and an extrusion clamping seat. The tool base serves as the basic support structure of the whole tool and provides a stable mounting platform for other components, ensuring the overall stability of the tool during the machining process. The first driving source is fixedly arranged on the tool base and has a unique function, which can not only provide lifting driving force to enable relevant components to move in the vertical direction, but also can simultaneously provide extrusion power to meet the requirements of the pin clamping during the pin machining process and the force required by the specific machining process. The first placing block is arranged on the two sides of the first driving source, and its main function is to place the pin to be machined and to realize the preliminary positioning and certain degree of limiting of the pin through special structural design, preventing the pin from rolling or deviating during the placing process. The extrusion clamping seat is arranged on one side of the first placing block, and during the working process of the tool, it limits the lifting of the first driving source in the vertical direction on the one hand, ensuring that the movement of the first driving source is within the appropriate range, and on the other hand, it performs secondary positioning on one end of the pin to be machined, further improving the positioning accuracy of the pin, and together with the first placing block, it enables the pin to always maintain an accurate and stable position during the machining process.

[0006] Further, the tool base is made of high-strength and high-rigidity metal material (such as high-quality steel or aluminum alloy) to withstand various external forces generated during the machining process, such as cutting force and impact force, and to ensure the stability of the overall structure of the tool. The shape and size of the tool base are designed through accurate calculation, not only to meet the installation and connection requirements with other components, but also to consider the installation and fixing method of the tool on the machining equipment (such as machine tool), usually with positioning holes or mounting grooves on the base to enable accurate positioning and firm connection with the machine tool workbench, ensuring that the tool does not displace or shake during the machining process, and providing a solid foundation for the precision machining of the pin.

[0007] Furthermore, the first driving source is mainly composed of a first driving bracket, a cylinder, an extrusion block and a deformation assembly. The bottom array of the first driving bracket is provided with a cylinder, which serves as a power output unit and can provide stable and adjustable power. The array arrangement of multiple cylinders can make the driving force more evenly distributed, thereby improving the stability and reliability of the drive. An extrusion block is movably provided on the top of the first driving bracket. The extrusion block can move in the vertical direction under the drive of the cylinder. Its shape and structural design are closely related to the overall function of the tooling. The extrusion block is arranged in the shape of an isosceles trapezoid. This shape design has a unique role in cooperation with other components. For example, when it cooperates with the inclined surface of the extrusion clamping seat, it can realize the effective transmission and conversion of force. The top array of the extrusion block is provided with a deformation assembly. One end of the deformation assembly is connected to the output end of the cylinder. It can be deformed or displaced under the drive of the cylinder. The other end is movably inserted in the extrusion block, ensuring the stability and accuracy of the deformation assembly during movement. The deformation assembly includes a press seat that can deform horizontally to the left and right sides. A deformable pressure block is movably provided in the center of the press seat, and the deformable pressure block and the press seat are arranged in line contact. This structural design enables the deformable pressure block to cause the press seat to deform horizontally when subjected to external force, thereby achieving the extrusion, clamping or other specific force transmission functions of the latch. The deformable pressure block is fixed with a pull rod with racks symmetrically provided on both sides. The pull rod engages with the lifting gear rotatably provided on the extrusion block for transmission. When the deformable pressure block moves, the meshing relationship between the rack and the lifting gear can convert the horizontal movement into the vertical movement of the extrusion block, realizing the conversion and coordination of movements in different directions, and meeting the complex force and movement requirements during the latch processing process.

[0008] Furthermore, the first placement block is provided with an inwardly concave U-shaped placement groove, the shape of which is adapted to the outer shape of the latch, so that the latch can be naturally placed therein to achieve preliminary positioning. A first positioning arm, a second positioning arm, and a third positioning arm are provided on one side of the first placement block. These three positioning arms are arranged along the circumference of the U-shaped placement groove to limit the latch from different directions to prevent the latch from rolling or shifting in the placement groove. Among them, a ball bearing is provided on the first positioning arm in a rolling manner. The provision of the ball bearing can reduce the friction between the latch and the positioning arm, avoiding scratches on the surface of the latch when placing or removing the latch. At the same time, when the latch is disturbed by a slight external force, the ball bearing can play a certain buffering and guiding role, so that the latch can be better maintained in the predetermined position, further improving the stability and safety of the latch placement.

[0009] Furthermore, one side of the extrusion clamping seat is provided with an inclined surface that is compatible with the first drive source. When the extrusion block of the first drive source moves upward under the drive of the cylinder, the isosceles trapezoidal surface of the extrusion block contacts and interacts with the inclined surface of the extrusion clamping seat. Through the mechanical principles of the inclined surface, the vertical driving force is converted into a horizontal clamping force, achieving the clamping operation of the latch. A pressure plate placement groove is provided on the top of the first drive source. In certain specific processing processes, auxiliary tools such as pressure plates can be placed in the pressure plate placement groove to apply additional pressure to the latch or perform other forms of processing operations. This further expands the functional diversity of the tooling and meets the needs of different latch processing processes.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1) The concave U-shaped placement groove on the first placement block is designed according to the outer contour of the bolt, and its shape is adapted to the height of the bolt, so that the bolt can fall into the groove naturally and accurately when placed, realizing the preliminary positioning function and effectively reducing the possibility of the bolt's displacement in the horizontal direction. The first positioning arm, the second positioning arm and the third positioning arm arranged along the circumference of the U-shaped placement groove limit the bolt from different directions, further constraining the position of the bolt and preventing it from rolling or shifting during the placement process. Among them, the rolling ball design on the first positioning arm is ingenious. While reducing the friction between the bolt and the positioning arm, the ball can also play a buffering and guiding role when the bolt is slightly disturbed by external forces, so that the bolt can be better maintained in the predetermined position, providing a stable and accurate initial position for subsequent processing, and effectively ensuring the consistency and quality stability of the bolt processing. The extrusion clamping seat plays a key role in secondary positioning in the tooling. A sloped surface on one side, adapted to the first drive source, interacts with the extrusion block to not only limit the vertical lift of the first drive source during operation, ensuring the accuracy and stability of the entire drive process, but also converts the vertical driving force into a horizontal clamping force, providing precise secondary positioning of the pin to be processed. This multi-component collaborative positioning method constrains the pin from multiple dimensions, ensuring that the pin maintains a precise position during processing. This significantly reduces processing errors caused by inaccurate positioning, improves the processing accuracy of the pin, and meets the high-precision requirements of precision mechanical devices.

[0012] 2) The structural design of the first driving source provides a stable and reliable clamping force for the latch. The cylinders arranged in the bottom array can provide sufficient and uniform power output. When the cylinder is working, the clamping of the latch is achieved through the coordinated action of the deformation assembly and the extrusion block. The pressure seat in the deformation assembly can be deformed horizontally to the left and right sides. Under the action of the deformation pressure block, the pressure seat can fit tightly to the surface of the latch, and due to the line contact between the deformation pressure block and the pressure seat, the force transmission is more accurate and concentrated, which can effectively avoid the problem of uneven pressure caused by excessive contact area, thereby ensuring that the various parts of the latch are evenly stressed during the clamping process, and there will be no local loosening or excessive extrusion. The extrusion block is arranged in the shape of an isosceles trapezoid, and the rotatable lifting gear on it is engaged with the pull rod on the deformation assembly for transmission. This structural design realizes the effective conversion and transmission of force. When the cylinder drives the deformation component, the pull rod drives the lifting gear to rotate, thereby causing the extrusion block to move in the vertical direction, cooperating with the inclined surface of the extrusion clamping seat to convert the vertical driving force into the horizontal clamping force, and can maintain the clamping state continuously and stably throughout the entire processing process. Whether in drilling, grinding and other processing processes, the pin can be firmly fixed in the face of external force interference such as cutting force and vibration, without displacement or shaking, effectively improving the safety of the processing process and product quality, and reducing the scrap rate.

[0013] 3) Accurate positioning and stable clamping lay a solid foundation for the efficient processing of the latch. Since the latch always maintains a precise position and a stable posture during the processing process, the processing equipment (such as machine tools) can process the latch more accurately. For example, when drilling, the position accuracy, diameter accuracy and cylindricity of the hole can be guaranteed; when grinding, the flatness and roughness of the latch surface can be ensured to meet the requirements. Moreover, the multifunctional power provided by the first drive source can meet the needs of different processing procedures, reducing the auxiliary time and the number of adjustments during the processing, and improving the processing efficiency. For example, in some cases where the latch needs to be processed continuously through multiple processes, there is no need to replace the tooling or readjust the position of the latch. The first drive source can flexibly switch the lifting drive force and the extrusion power according to the requirements of different processes, realizing fast and efficient processing conversion, greatly shortening the processing cycle of the latch and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] To further illustrate various embodiments, the present invention is provided with accompanying drawings. These drawings form part of the disclosure of this invention and are primarily used to illustrate the embodiments and, in conjunction with the relevant description in the specification, to explain the operating principles of the embodiments. By referring to these drawings, those skilled in the art will understand other possible implementations and the advantages of this invention. The components in the figures are not drawn to scale, and similar reference numerals are generally used to represent similar components.

[0015] Figure 1 This is a three-dimensional view of the tooling for precision machining of latches. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0018] Please see the attached Figure 1 As shown: A pin precision processing tool, including a tool base 1, the pin precision processing tool also includes:

[0019] The first driving source 2 is fixed on the tooling base 1 and is used to provide lifting driving force and extrusion power at the same time;

[0020] First placement blocks 3, disposed opposite to the first driving source 2 on both sides, for placing the pins to be processed; and

[0021] The extrusion clamping seat 4 is provided on one side of the first placement block 3 and is used to limit the vertical lifting of the first driving source 2 and perform secondary positioning on one end of the pin to be processed.

[0022] The first drive source combines lifting and extrusion forces into one. This multifunctional design greatly simplifies the structural complexity of the tooling and improves its overall performance and reliability. During the pin processing process, the lifting force can be used to achieve vertical movement of the extrusion block, cooperating with the inclined surface of the extrusion clamping seat to achieve the clamping action of the pin. It can also provide appropriate vertical force in some special processing processes (such as stamping and straightening the pin). The extrusion force acts directly on the deformable component, applying a horizontal clamping force to the pin through the pressure seat and the deformable pressure block. The magnitude of the clamping force can be flexibly adjusted according to factors such as the material and size of the pin. For example, for pins made of softer materials, the air pressure in the cylinder can be appropriately reduced to reduce the clamping force and avoid damage to the pin. For pins with larger sizes or higher processing precision requirements, the air pressure in the cylinder can be increased to increase the clamping force and ensure the stability of the pin during processing. This multifunctional drive source can meet the diverse needs of different pin processing technologies, improve the versatility and adaptability of tooling, reduce the frequency of tooling replacement due to changes in processing technology, and reduce production costs.

[0023] On the basis of the above-mentioned embodiment, the first driving source 2 comprises a first driving support 21; the bottom of the first driving support 21 is provided with a cylinder 22; the top of the first driving support 21 is movably provided with an extrusion block 23; the top of the extrusion block 23 is provided with a deformation assembly 24; one end of the deformation assembly 24 is connected to the output end of the cylinder 22; and one end of the deformation assembly 24 is movably inserted into the extrusion block 23.

[0024] On the basis of the above-mentioned embodiment, the deformation assembly 24 comprises a pressing seat 241 which can be deformed to the left and right sides horizontally; the central position of the pressing seat 241 is movably provided with a deformed pressing block 242, and the deformed pressing block 242 is arranged in line contact with the pressing seat 241; and two symmetrically arranged racks are arranged on the deformed pressing block 242.

[0025] On the basis of the above-mentioned embodiment, the extrusion block 23 is arranged in the shape of an isosceles trapezoid; a lifting gear is rotatably arranged on the extrusion block 23; and the lifting gear is in meshing transmission with the pull rod 423 on the deformation assembly 24.

[0026] On the basis of the above-mentioned embodiment, the first placing block 3 is provided with an inner recessed U-shaped placing groove 31; one side of the first placing block 3 is provided with a first positioning arm 32, a second positioning arm 33 and a third positioning arm 34; the first positioning arm 32, the second positioning arm 33 and the third positioning arm 34 are arranged along the periphery of the U-shaped placing groove 31; and the first positioning arm 32 is rotatably provided with a ball.

[0027] The overall structure design has good flexibility and adaptability. The U-shaped placing groove of the first placing block and the structure of the positioning arm can adapt to different diameters and lengths of the plug, and only need to be adjusted appropriately (such as replacing the first placing block with a different size U-shaped placing groove) according to the specific size of the plug to realize the processing of various specifications of the plug. The cylinder output force of the first driving source can be adjusted to enable the tool to handle the processing tasks of plugs made of different materials (such as metal, plastic, etc.), and the clamping force and processing force required for plugs made of different materials can be matched by adjusting the cylinder pressure. The cooperation structure of the extrusion clamping seat and the first driving source also has a certain universality, and the angle and size of the inclined surface can adapt to plugs of different shapes and sizes within a certain range, and the application range of the tool can be further expanded by replacing extrusion clamping seats of different specifications. This wide adaptability enables the tool to play a role in various plug processing scenarios, whether it is mass production or small-batch customized processing, it can efficiently and accurately complete the task, and improve the production flexibility and market competitiveness of the enterprise in the plug processing field.

[0028] On the basis of the above embodiment, one side of the extrusion clamping seat 4 is provided with an inclined surface adapted to the first driving source 2 ; and the top of the first driving source 2 is provided with a pressure plate placement groove.

[0029] When using this pin precision machining tool, the pin to be machined is first placed in the U-shaped placement slot of the first placement block. The pin is initially positioned and limited by the U-shaped placement slot and the combined action of the first, second, and third positioning arms. During placement, the ball bearings on the first positioning arm ensure smooth and damage-free entry into the placement slot. The cylinder of the first drive source is then activated, and the cylinder output drives the deformable pressure block in the deformation assembly to move. The deformable pressure block causes the pressure seat to deform horizontally, initiating initial extrusion and clamping of the pin. Simultaneously, the pull rod on the deformable pressure block, through engagement with the lifting gear on the pressure block, causes the pressure block to move upward vertically. The upward movement of the pressure block causes its isosceles trapezoidal surface to contact and interact with the inclined surface of the pressure clamping seat, further converting the vertical driving force into a horizontal clamping force. The pressure clamping seat performs secondary positioning on one end of the pin to be machined, working in conjunction with the first placement block to securely clamp the pin and precisely fix its position during machining. Throughout the entire machining process, the first drive source provides a continuous and stable force, ensuring the pin does not shift or wobble during drilling, grinding, and other machining steps, ensuring machining accuracy. Once machining is complete, the cylinder reverses its motion, restoring all components to their original positions. The finished pin can then be easily removed and prepared for the next machining operation. The fixture's structural design facilitates maintenance and upkeep. The fixture base, serving as the foundation of the entire fixture, is simple and stable, making it easy to inspect and clean dust, oil, and other impurities. Any deformation or wear is also easily repaired or replaced. The components of the first drive source are logically arranged, with clear connections between the cylinder, extrusion block, and deformation assembly, facilitating regular inspection and maintenance. For example, the cylinder's sealing performance can be easily disassembled for testing. When inspecting the extrusion block's movement, its removable mounting on the top of the first drive bracket allows for easy inspection and correction of wear on its guide rails or sliders. The deformation assembly's relatively independent structure allows for independent replacement or repair of any issues with the presser, deformation block, or tie rod. The structure of the first placement block also facilitates maintenance. The U-shaped placement slot and positioning arm are simple to inspect and clean, and any damaged or missing ball bearings can be quickly replaced. The simple structure of the extrusion clamping seat makes wear on its inclined surface easy to inspect and repair, and, if necessary, to replace. This convenient maintenance feature ensures that the tooling remains in good working condition over the long term, reducing production interruptions caused by equipment failure, lowering maintenance costs, and increasing the overall service life and efficiency of the tooling.

[0030] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art should be able to utilize the technical contents disclosed above and make equivalent embodiments that are equivalent changes by making slight changes or modifications without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A pin precision machining tool, comprising a tool base (1), characterized in that: The pin precision machining tooling also includes: A first driving source (2) is fixedly mounted on the tooling base (1) and is used to provide both lifting driving force and extrusion power; First placement blocks (3) are arranged opposite to each other on both sides of the first driving source (2) and are used for placing the pins to be processed; and The extrusion clamping seat (4) is arranged on one side of the first placement block (3) and is used to limit the vertical lifting of the first driving source (2) and to perform secondary positioning on one end of the pin to be processed.

2. The pin precision machining tool according to claim 1, characterized in that: The first driving source (2) comprises a first driving bracket (21); a cylinder (22) is provided in an array at the bottom of the first driving bracket (21); an extrusion block (23) is movably provided on the top of the first driving bracket (21); a deformation component (24) is provided in an array on the top of the extrusion block (23); one end of the deformation component (24) is connected to the output end of the cylinder (22); and one end of the deformation component (24) is movably inserted into the extrusion block (23).

3. The pin precision machining tool according to claim 2, characterized in that: The deformation assembly (24) includes a material pressing seat (241) that can be deformed horizontally to the left and right sides; a deformation pressing block (242) is movably provided at the center of the material pressing seat (241), and the deformation pressing block (242) is arranged in line contact with the material pressing seat (241); a pull rod (423) with racks symmetrically provided on both sides is fixed on the deformation pressing block (242).

4. The pin precision machining tool according to claim 2, characterized in that: The extrusion block (23) is arranged in an isosceles trapezoidal shape; a lifting gear is rotatably provided on the extrusion block (23); the lifting gear is meshed with the pull rod (423) on the deformation component (24) for transmission.

5. The pin precision machining tool according to claim 1, characterized in that: The first placement block (3) is provided with an inwardly concave U-shaped placement groove (31); a first positioning arm (32), a second positioning arm (33) and a third positioning arm (34) are provided on one side of the first placement block (3); the first positioning arm (32), the second positioning arm (33) and the third positioning arm (34) are arranged along the circumference of the U-shaped placement groove (31); a ball is rollably provided on the first positioning arm (32).

6. The pin precision machining tool according to claim 1, characterized in that: One side of the extrusion clamping seat (4) is provided with an inclined surface adapted to the first driving source (2); and the top of the first driving source (2) is provided with a pressure plate placement groove.

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