Cylinder pin assembly tool

Abstract

The utility model discloses a cylindrical pin assembly tool, including thimble, thimble is used for pushing pin and is inserted into the mounting hole inside workpiece to realize assembly, and the side that pin is away from workpiece is connected with drive assembly, and the front end of thimble is slidably connected on the guide piece, and drive assembly drives thimble to move along the preset channel on the guide piece and pushes pin and is inserted into the mounting hole, the utility model discloses a thimble is convenient for matching the pin of smaller size, and the structural design of guide piece and preset channel provides accurate orientation and constraint for the movement of thimble, ensures that thimble always keeps with the axis of mounting hole consistent in the process of pushing pin, makes pin can be perpendicular, centred mode smoothly pressed into, and the connection reliability and consistency after assembly are high, effectively avoid the problem such as assembly difficulty, hole wall or pin surface damage caused by pin skew.

Description

Technical Field

[0001] This utility model relates to the field of cylindrical pin assembly technology, and specifically to a cylindrical pin assembly tooling. Background Technology

[0002] The function of pins is to position and fasten components. Pins are generally installed using two methods: press-in or hammering in with soft metal. Currently, for assemblies involving pin connections, the installation process mostly involves manually hammering the pins into the pin connectors. Manual operation is inefficient and can easily cause errors in the shape and position of the pins, or even damage the underlying components being assembled.

[0003] In addition, when assembling pins inside products with housings, the mounting holes of the pins are located inside the housing, and the internal space of the housing is narrow. During manual assembly, the pins are prone to deflection within the mounting holes, which further increases the difficulty of assembling the pins and makes it difficult to achieve rapid assembly. Utility Model Content

[0004] To address the shortcomings of existing technologies, a cylindrical pin assembly fixture is proposed, which solves the problem in the background technology that the small internal space of the housing makes it easy for the pin to deviate in the mounting hole during manual assembly, further increasing the difficulty of pin assembly and making it difficult to achieve rapid assembly.

[0005] To achieve the above objectives, the present invention proposes the following technologies: A cylindrical pin assembly fixture includes a push pin for pushing a pin into a mounting hole inside a workpiece to achieve assembly. A drive assembly is connected to the side of the pin away from the workpiece. The front end of the push pin is slidably connected to a guide. The drive assembly drives the push pin to move along a preset channel on the guide and pushes the pin into the mounting hole.

[0006] Furthermore, it also includes a support plate, one side of which is provided with a positioning part for mounting the workpiece. The top of the support plate and the positioning part are respectively provided with mounting grooves, and the guide is fixed in the mounting groove so that the preset channel can extend to the inside of the workpiece on the positioning part.

[0007] Furthermore, a first guide groove is provided on one side of the guide member to form a preset channel, and a second guide groove is provided on the other side of the guide member to communicate with the first guide groove. The driving component includes a top block that is slidably connected in the second guide groove.

[0008] Furthermore, the cross-section of the second guide groove is T-shaped, and the end of the top block is fixed to the driving block. The driving block moves closer to or further away from the support plate in the horizontal direction to drive the top block to slide in the second guide groove.

[0009] Furthermore, the top block has a channel for installing a ejector pin, and the end of the ejector pin is provided with a limiting block. The limiting block is engaged in a limiting groove on the driving block. The driving block is provided with an insertion groove that communicates with the limiting groove. The insertion groove is used to insert a limiting pin to abut against the limiting block.

[0010] Furthermore, the driving block is slidably connected to the guide channel opened on the guide plate, the guide plate is fixedly connected to the side of the support plate away from the workpiece, the guide channel passes through the guide plate, and a driving component connecting the driving block is provided in the guide channel.

[0011] Furthermore, the workpiece has an annular shell structure, the cross-section of the positioning part is a circle that matches the inner diameter of the workpiece end, the upper surface of the guide is an arc shape, and the curvature of the arc matches the internal shape of the workpiece.

[0012] Furthermore, a clamping member and a driving member are respectively provided on both sides of the support plate. The clamping member is used to press the workpiece against the periphery of the positioning part to achieve positioning. The driving member includes a connecting end, which is engaged in a locking groove opened on the driving block so that the driving member can drive the driving block and the top block to slide back and forth.

[0013] Compared with the prior art, the comprehensive effects brought about by this utility model include: This application utilizes a push pin to facilitate the matching of smaller pins. Through the cooperation of the drive component and the guide component, the drive component moves the push pin along a channel with a preset direction on the guide component, thereby completing the pushing action of the pin and realizing the insertion and assembly with the workpiece. The structural design of the guide component and the preset channel provides precise guidance and constraint for the movement of the push pin, ensuring that the push pin always remains aligned with the axis of the mounting hole during the process of pushing the pin. This allows the pin to be pressed in smoothly in a vertical and centered manner, resulting in high reliability and consistency of the connection after assembly. It effectively avoids problems such as assembly difficulties and damage to the hole wall or pin surface caused by pin misalignment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 for Figure 1 Schematic diagram of a local structure in the middle; Figure 3 This is a cross-sectional view of the drive component according to an embodiment of the present utility model.

[0015] Legend: 1. Ejector pin; 2. Pin; 3. Workpiece; 4. Mounting hole; 5. Guide component; 6. Support plate; 7. Positioning part; 8. First guide groove; 9. Second guide groove; 10. Top block; 11. Driving block; 12. Limiting block; 13. Insertion groove; 14. Guide plate; 15. Guide channel; 16. Snap-fit ​​groove. Detailed Implementation

[0016] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments 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 are within the protection scope of this utility model.

[0017] In this document, terms such as “up,” “down,” “left,” “right,” and “top” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] like Figures 1 to 3 As shown, a cylindrical pin assembly fixture includes a push pin 1, which is used to push a pin 2 into a mounting hole 4 inside a workpiece 3 to achieve assembly. A driving component is connected to the side of the pin 2 away from the workpiece 3. The front end of the push pin 1 is slidably connected to a guide 5. The driving component drives the push pin 1 to move along a preset channel on the guide 5 and pushes the pin 2 into the mounting hole 4.

[0019] By setting the ejector pin 1, it is easy to match the smaller pin 2. Through the cooperation of the drive component and the guide 5, the drive component drives the ejector pin 1 to move along the channel in the preset direction on the guide 5, thereby completing the pushing action of the pin 2 and realizing the insertion and assembly with the workpiece 3. The structural design of the guide 5 and the preset channel provides precise guidance and constraint for the movement of the ejector pin 1, ensuring that the ejector pin 1 always keeps consistent with the axis of the mounting hole 4 during the process of pushing the pin 2, so that the pin 2 can be pressed in smoothly in a vertical and centered manner. The connection after assembly has high reliability and consistency, effectively avoiding problems such as assembly difficulties and damage to the hole wall or the surface of the pin 2 caused by the misalignment of the pin 2.

[0020] The cylindrical pin assembly fixture in this embodiment also includes a support plate 6. A positioning part 7 for mounting the workpiece 3 is provided on one side of the support plate 6. The top of the support plate 6 and the positioning part 7 are respectively provided with mounting grooves. The guide 5 is fixed in the mounting groove so that the preset channel can extend to the inside of the workpiece 3 on the positioning part 7.

[0021] A positioning part 7 for mounting and fixing the workpiece 3 is provided on one side of the support plate 6. In order to provide mounting space for the guide mechanism, mounting grooves are provided on the top of the support plate 6 and the positioning part 7 respectively. The guide 5 is fixed in the mounting groove. The preset channel for the movement of the internal pin 2 can extend precisely to the internal space of the workpiece 3 mounted on the positioning part 7 and be aligned with the position of the mounting hole 4.

[0022] By setting up a dedicated positioning part 7, the workpiece 3 can be quickly and accurately placed into the predetermined position, ensuring that the position of the mounting hole 4 on the workpiece 3 is fixed each time it is assembled. The guide part 5 is integrated into the mounting groove of the support plate 6 and the positioning part 7, making the entire tooling structure compact and stable, able to withstand the reaction force during the pressing process, and avoiding the impact of structural deformation on assembly accuracy.

[0023] In the cylindrical pin assembly fixture of this embodiment, a first guide groove 8 is provided on one side of the guide member 5 to form a preset channel, and a second guide groove 9 communicating with the first guide groove 8 is provided on the other side of the guide member 5. The driving component includes a top block 10 slidably connected in the second guide groove 9.

[0024] Specifically, the first guide groove 8, which serves as a preset channel, is provided on the surface of one side of the guide member 5, which facilitates the placement of the pin 2 into the preset channel and the assembly is achieved by the ejector pin 1. The second guide groove 9 passes through the guide member 5, and the top block 10 that drives the ejector pin 1 to move is slidably connected in the second guide groove 9.

[0025] The above design divides the guide 5 into two parts with clear functions. The first guide groove 8 is mainly used to constrain and guide the slender ejector pin 1 to ensure its linear movement; the second guide groove 9 is used to accommodate and guide the larger cross-sectional block 10 to smoothly transmit the movement of the drive part.

[0026] Furthermore, the above structure allows the force pushing the ejector pin 1 to come from a more stable and rigid ejector block 10, avoiding the instability problem that may occur if the ejector pin 1 is directly driven.

[0027] In the cylindrical pin assembly fixture of this embodiment, the cross-section of the second guide groove 9 is T-shaped, and the end of the top block 10 is fixed on the driving block 11. The driving block 11 moves closer to or further away from the support plate 6 in the horizontal direction to drive the top block 10 to slide in the second guide groove 9.

[0028] Preferably, the cross-section of the second guide groove 9 is T-shaped, and the cross-section of the corresponding top block 10 is T-shaped. The width of the free end of the top block 10 is smaller than the width of the closed part of the second guide groove 9, so as to facilitate the sliding of the top block 10. At the same time, the T-shaped setting prevents the top block 9 from detaching from the guide groove.

[0029] The T-slot structure and the top block 10 form a good fit, which can effectively prevent the top block 10 from rotating or warping when subjected to force, ensuring that the direction of the pushing force always coincides with the axis of the ejector pin 1, greatly improving the rigidity and stability of the entire transmission system; the drive block 11 provides a convenient and robust interface for connection with external drive mechanisms (such as cylinders and hydraulic cylinders).

[0030] In the cylindrical pin assembly fixture of this embodiment, the top block 10 is provided with a channel for installing the ejector pin 1, and the end of the ejector pin 1 is provided with a limiting block 12. The limiting block 12 is engaged in a limiting groove opened on the driving block 11. The driving block 11 is provided with an insertion groove 13 that communicates with the limiting groove. The insertion groove 13 is used to insert the limiting pin to abut against the limiting block 12.

[0031] To fix the ejector pin 1 and the drive block 11 and prevent them from sliding in the top block 10, a connecting groove 13 with a connecting limiting groove is provided on the drive block 11. During assembly, a limiting pin (not shown in the figure) can be inserted into the connecting groove 13 to abut against the limiting block 12, thereby achieving axial fixation of the ejector pin 1.

[0032] The above structure enables quick assembly and disassembly and reliable fixation of the ejector pin 1. As a vulnerable part, the ejector pin 1 can be quickly replaced by simply inserting and removing the limit pin, which greatly facilitates the maintenance of the tooling and reduces downtime. The cooperation between the limit block 12 and the limit groove, as well as the axial locking of the limit pin, together ensure that the ejector pin 1 will not loosen or fall off during operation, thus ensuring high reliability.

[0033] With the above structure, when the top block 10 is reset, the front end of the ejector pin 1 retracts a certain distance in the first guide groove 8 on the guide member 5, so that the staff can place the pin 2 to be assembled into the first guide groove 8 in preparation for the next assembly.

[0034] In the cylindrical pin assembly fixture of this embodiment, the driving block 11 is slidably connected to the guide channel 15 opened on the guide plate 14. The guide plate 14 is fixedly connected to the side of the support plate 6 away from the workpiece 3. The guide channel 15 passes through the guide plate 14. A driving component connected to the driving block 11 is provided in the guide channel 15.

[0035] In order to provide additional guidance for the movement of the drive block 11, a guide plate 14 with a guide channel 15 is provided. The guide plate 14 is fixedly connected to the side of the support plate 6 away from the workpiece 3 by screws or other means. The guide channel 15 passes through the guide plate 14, and a drive component (such as a cylinder piston rod) can be installed inside it to connect with the drive block 11.

[0036] The addition of guide plate 14 further optimizes motion accuracy. Based on the primary guidance of the top block 10 by the second guide groove 9 of guide member 5, the guide channel 15 of guide plate 14 provides secondary guidance for the driving block 11. This dual-guidance system greatly improves the linearity of the entire propulsion system and further ensures assembly accuracy.

[0037] By distributing the main sliding friction and guiding functions to two components, guide 5 and guide plate 14, the wear of individual parts is reduced and the overall life of the tooling is improved.

[0038] In the cylindrical pin assembly fixture of this embodiment, the workpiece 3 is an annular shell structure, the cross section of the positioning part 7 is a circle that matches the inner diameter of the end of the workpiece 3, the upper surface of the guide 5 is an arc shape, and the curvature of the arc matches the internal shape of the workpiece 3.

[0039] In this embodiment, the workpiece 3 is an annular shell structure, and the cross-section of the positioning part 7 is designed to match the inner diameter of the end of the workpiece 3 to achieve precise radial positioning. In addition, the upper surface of the guide 5 is designed to be arc-shaped, and the curvature of the arc matches the internal shape of the workpiece 3, so that after the guide 5 is installed inside the workpiece 3, its upper surface can fit against the inner wall of the workpiece 3.

[0040] The circular positioning part 7 ensures the rapid centering and positioning of the annular workpiece 3. The arc-shaped upper surface of the guide part 5 can perfectly fit the inner wall of the workpiece 3, which not only provides a longer guiding distance for the assembly of the pin 2, but more importantly, avoids the tooling from bumping or scratching the precision surface inside the workpiece 3.

[0041] In the cylindrical pin assembly fixture of this embodiment, a clamping component and a driving component are respectively provided on both sides of the support plate 6. The clamping component is used to press the workpiece 3 against the periphery of the positioning part 7 to achieve positioning. The driving component includes a connecting end, which is engaged in the engaging groove 16 opened on the driving block 11 so that the driving component can drive the driving block 11 and the top block 10 to slide back and forth.

[0042] On both sides of the support plate 6 are respectively provided a clamping component (not shown in the figure, such as a cylinder-driven pressure arm) and a driving component (such as a cylinder). The clamping component is used to act before assembly, pressing the workpiece 3 tightly against the periphery of the positioning part 7 from the side to prevent it from moving during the pressing pin process; the connecting end of the driving component (such as the end of the cylinder piston rod) is engaged in the engaging groove 16 opened on the driving block 11. The above engaging method facilitates the transmission of power and the disassembly and maintenance of the mechanism.

[0043] The connection method of the snap-fit ​​slot 16 not only ensures the reliability of power transmission, but also facilitates the quick separation of the drive component from the tooling body, making maintenance or replacement convenient.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "rotation", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] Although embodiments of the present invention have been shown and described in detail, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cylindrical pin assembly fixture, characterized in that, The device includes a push pin, which is used to push a pin into a mounting hole inside the workpiece to achieve assembly. A drive component is connected to the side of the pin away from the workpiece. The front end of the push pin is slidably connected to a guide. The drive component drives the push pin to move along a preset channel on the guide and pushes the pin into the mounting hole.

2. The cylindrical pin assembly fixture according to claim 1, characterized in that, It also includes a support plate, one side of which is provided with a positioning part for mounting the workpiece. The top of the support plate and the positioning part are respectively provided with mounting grooves. The guide is fixed in the mounting groove so that the preset channel can extend to the inside of the workpiece on the positioning part.

3. The cylindrical pin assembly fixture according to claim 2, characterized in that, The guide member has a first guide groove on one side to form a preset channel, and a second guide groove communicating with the first guide groove on the other side. The driving component includes a top block that is slidably connected in the second guide groove.

4. The cylindrical pin assembly fixture according to claim 3, characterized in that, The second guide groove has a T-shaped cross-section. The end of the top block is fixed to the driving block. The driving block moves closer to or further away from the support plate in the horizontal direction to drive the top block to slide in the second guide groove.

5. A cylindrical pin assembly fixture according to claim 4, characterized in that, The top block has a channel for installing a ejector pin. The end of the ejector pin is provided with a limiting block. The limiting block is engaged in a limiting groove on the driving block. The driving block is provided with an insertion groove that connects to the limiting groove. The insertion groove is used to insert a limiting pin to abut against the limiting block.

6. A cylindrical pin assembly fixture according to claim 4, characterized in that, The driving block is slidably connected to the guide channel opened on the guide plate. The guide plate is fixedly connected to the side of the support plate away from the workpiece. The guide channel passes through the guide plate, and a driving component connecting the driving block is provided in the guide channel.

7. A cylindrical pin assembly fixture according to claim 2, characterized in that, The workpiece is an annular shell structure, the cross-section of the positioning part is a circle that matches the inner diameter of the workpiece end, the upper surface of the guide is an arc, and the curvature of the arc matches the internal shape of the workpiece.

8. A cylindrical pin assembly fixture according to claim 6, characterized in that, The support plate is provided with a clamping member and a driving member on both sides. The clamping member is used to press the workpiece against the periphery of the positioning part to achieve positioning. The driving member includes a connecting end, which is engaged in a locking groove opened on the driving block so that the driving member can drive the driving block and the top block to slide back and forth.

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