Ring long arm inside support tool

Abstract

The utility model relates to tool fixture design technical field, especially a kind of annular piece long arm inner support tool. Auxiliary support seat, linear motion element are with main support seat as installation base, and located its both sides. The inner chamber of main support seat is provided with guide slope;Power push rod is built-in main support seat inner chamber, is driven by linear motion element, and it is hinged first, second inner support claw respectively by two hinged pin shaft. Open drive pin is inserted into the inner chamber of auxiliary support seat, and across between first, second inner support claw. The outer side wall between first, second inner support claw is provided with linkage slope. Linear motion element drives power push rod axial movement, drives first, second inner support claw synchronous movement: when moving away from auxiliary support seat, linkage slope and guide slope extrusion realize retraction;When approaching, linkage slope is separated and cooperates open drive pin radial out-thrust and realizes that first, second inner support claw open, without additional extension structure can adapt deep cavity nut, long barrel annular piece and other deep position clamping needs.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture design technology, and in particular to a long-arm inner support tooling for a ring-shaped part. Background Technology

[0002] In equipment assembly and automated production lines, the processing, handling, and assembly of ring-shaped products such as nuts, annular bushings, and bearing inner rings often require clamping and positioning from within the product. Compared to external clamping, internal clamping avoids scratching the outer surface of the product and is suitable for scenarios where the outer surface of the product needs to reserve assembly space or has already undergone precision machining. Therefore, it is widely used in the field of high-precision manufacturing. However, existing internal clamping solutions for annular components have significant technical limitations when dealing with products such as deep-cavity nuts and long cylindrical annular components: during operation, the clamping component needs to traverse a considerable distance to reach the target positioning position, and the space inside the product to accommodate the clamping device is very limited. Most current mainstream internal clamping devices rely on gripper cylinders to directly drive the clamping component's movement. The inherent structural characteristics of the gripper cylinder determine that the extension length of its clamping component is limited. That is, if the clamping component of the gripper cylinder is forcibly lengthened to reach the internal positioning position of a deep-cavity or long cylindrical product, it will result in insufficient rigidity of the clamping component, making it prone to bending and wobbling during clamping. This not only fails to guarantee clamping concentricity but may even cause the product to fall off due to unstable clamping force transmission. Some improvement solutions attempt to indirectly drive the extended clamping mechanism through additional transmission components, but the design gaps will inevitably lead to a decrease in clamping accuracy, and the coordinated action control of multiple components is complex, which can easily cause jamming in high-frequency clamping operations.

[0003] Therefore, it is urgent for technical personnel to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a long-arm internal support tooling for ring-shaped parts, which aims to solve the problems in the existing design for products such as deep cavity nuts and long cylindrical ring-shaped parts. When the gripper cylinder directly drives the clamping component, the extension length is limited, the rigidity is insufficient and it is easy to shake. The additional transmission components are prone to reduced accuracy due to gaps and jamming during high-frequency operation. It is impossible to take into account the problems of long-distance access, spatial adaptation and clamping stability.

[0005] This utility model relates to a ring-shaped long arm inner support tooling, including a linear motion element, a main support seat, a power push rod, an auxiliary support seat, a first inner support claw, a second inner support claw, a first hinge pin, a second hinge pin, and an opening drive pin. The auxiliary support base is fixedly installed on one side of the main support base; The side of the main support base away from the auxiliary support base is fixedly connected to the linear motion element, and its inner cavity is provided with a guide slope. The power push rod is built into the inner cavity of the main support seat. One end of the rod is connected to the output end of the linear motion element, and the other end is hinged to the first inner support claw through the first hinge pin and to the second inner support claw through the second hinge pin. The opening drive pin is inserted and fixed in the inner cavity of the auxiliary support seat, and extends across the space between the first inner support claw and the second inner support claw. The outer walls of the first inner support claw and the second inner support claw are both provided with a linkage inclined surface adapted to the guide inclined surface, and the end of both away from the power push rod is a long arm extension section for extending into the interior of the ring part. When the linear motion element drives the power push rod to move axially, it causes the first inner support claw and the second inner support claw to move synchronously: when moving away from the auxiliary support seat, the linkage inclined surface and the guide inclined surface squeeze each other, realizing the inward retraction of the first inner support claw and the second inner support claw; when moving closer to the auxiliary support seat, the linkage inclined surface disengages from the guide inclined surface, and in conjunction with the radial outward pushing action of the opening drive pin, realizes the opening of the first inner support claw and the second inner support claw, and their long arm extension section abuts against the inner wall of the annular part.

[0006] As a further improvement to the technical solution disclosed in this utility model, the free end of the first inner support claw is formed with a first extended abutment portion; the free end of the second inner support claw is formed with a second extended abutment portion; in the open state, the first extended abutment portion and the second extended abutment portion cooperate to form an annular abutment surface that matches the curvature of the inner wall of the annular part.

[0007] As a further improvement to the technical solution disclosed in this utility model, the auxiliary support base is fixed to the main support base by means of multiple sets of screws; the auxiliary support base is formed with multiple mounting through holes evenly distributed along its circumference for screws to pass through; the end face of the main support base facing the auxiliary support base is formed with multiple threaded holes corresponding one-to-one with the mounting through holes for screws to be screwed in.

[0008] As a further improvement to the technical solution disclosed in this utility model, an annular lubrication groove extending along its axial direction is provided on the outer peripheral wall of the power push rod; the annular lubrication groove is filled with solid grease, and the area in the inner cavity of the main support seat that contacts the outer peripheral wall of the power push rod is provided with a wear-resistant lubricating coating.

[0009] As a further improvement to the technical solution disclosed in this utility model, the linear motion element is preferably any one of a cylinder, a hydraulic cylinder, or a linear motor.

[0010] In practical applications, the annular component long arm inner support fixture disclosed in this utility model can achieve at least the following beneficial technical effects, specifically: 1) The first and second inner support claws are located away from the power push rod and can penetrate deep into the annular part to a designated positioning position and achieve stable clamping. For products such as deep-cavity nuts and long cylindrical annular parts that require clamping at a deep internal position, no additional extension structure is needed. This directly covers the entire process requirements of these products from internal wall positioning to stable fixation. It avoids structural redundancy caused by additional extension components and solves the problem of limited positioning range caused by insufficient extension length in traditional solutions. It perfectly matches the design goals for the working range and fixing effect when clamping at a deep internal position of the annular part. 2) The linear motion element drives the power push rod to move axially, thereby causing the first inner support claw and the second inner support claw to move synchronously: the first inner support claw, the second inner support claw and the main support seat cooperate to achieve the closing, and the expansion is completed by the action of the opening drive pin. The transmission process logic is closed loop and the action is smoothly connected. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0012] Figure 1 This is a three-dimensional schematic diagram of the long-arm inner support tooling of the ring-shaped part disclosed in this utility model.

[0013] Figure 2 This is a three-dimensional schematic diagram from another perspective of the ring-shaped long-arm inner support tooling disclosed in this utility model.

[0014] Figure 3 yes Figure 1 Top view.

[0015] Figure 4 yes Figure 3 AA sectional view.

[0016] Figure 5 This is a three-dimensional schematic diagram of the main support seat in the long arm inner support tooling of the ring-shaped part disclosed in this utility model.

[0017] Figure 6 yes Figure 5 Top view.

[0018] Figure 7 yes Figure 6 BB cross-sectional view.

[0019] Figure 8 This is a three-dimensional schematic diagram of the auxiliary support seat in the long arm inner support tooling of the ring-shaped part disclosed in this utility model.

[0020] Figure 9 This is a three-dimensional schematic diagram of the first inner support claw in the long arm inner support tooling of the ring-shaped part disclosed in this utility model.

[0021] Figure 10 This is a three-dimensional schematic diagram of the second inner support claw in the long arm inner support tooling of the ring-shaped part disclosed in this utility model.

[0022] 1-Linear motion element; 2-Main support seat; 21-Guide inclined surface; 22-Threaded hole; 3-Power push rod; 4-Auxiliary support seat; 41-Mounting through hole; 42-Avoidance notch; 5-First inner support claw; 51-First linkage inclined surface; 52-First outer extension contact part; 6-Second inner support claw; 61-Second linkage inclined surface; 62-Second outer extension contact part; 7-First hinge pin; 8-Second hinge pin; 9-Opening drive pin. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to specific embodiments. Figures 1-4 The diagram shows the structure of the long-arm inner support fixture for the annular component disclosed in this utility model. It is mainly composed of a linear motion element 1, a main support seat 2, a power push rod 3, an auxiliary support seat 4, a first inner support claw 5, a second inner support claw 6, a first hinge pin 7, a second hinge pin 8, and an opening drive pin 9. The linear motion element 1 and the auxiliary support seat 4 are both fixed to the main support seat 2 and are located on either side of it. The linear motion element 1 provides precise power output, the power push rod 3 transmits the driving force, and the first and second inner support claws 5 and 6 achieve opening and closing actions through inclined plane linkage and the cooperation of the opening drive pin 9. This ultimately forms a solution for deep-position stable clamping of products such as deep-cavity nuts and long cylindrical annular components.

[0024] As the core load-bearing and guiding component of the tooling, the structural design of the main support 2 directly affects the overall functionality of the tooling. For example... Figures 5-7 As shown, one side of the main support base 2 has a pre-installed assembly structure specifically for connecting the auxiliary support base 4; the other side of the main support base 2 is fixed to the linear motion element 1 to ensure the stability of the power input end. Particularly important is that... Figure 7 As can be clearly seen in the diagram, the inner cavity of the main support 2 is specially provided with a guide slope 21, which provides a key guiding function for the retraction action of the first inner support claw 5 and the second inner support claw 6. Furthermore, the end face of the main support 2 facing the auxiliary support 4 is formed with multiple threaded holes 22, which will form a one-to-one correspondence with the mounting through holes 41 on the auxiliary support 4, creating conditions for a stable connection between the two.

[0025] like Figure 2 ,like Figure 8As shown, the auxiliary support 4 has multiple mounting through holes 41 evenly distributed around its circumference. During assembly, multiple sets of screws pass through these mounting through holes 41 and are then screwed into the threaded holes 22 of the main support 2, thus fixing the auxiliary support 4 and the main support 2 together. This not only effectively ensures a stable connection between the auxiliary support 4 and the main support 2, but also allows for quick component replacement by removing the screws, effectively reducing tooling maintenance costs.

[0026] Similarly, Figure 8 As shown, the auxiliary support base 4 is provided with a clearance notch 42, which provides sufficient space for the opening and closing of the first inner support claw 5 and the second inner support claw 6, and avoids component interference between the first inner support claw 5 and the second inner support claw 6 and the auxiliary support base 4 during the movement.

[0027] As Figure 4 As shown, an opening drive pin 9 is inserted and fixed in the inner cavity of the auxiliary support base 4. The opening drive pin 9 lies between the first inner support claw 5 and the second inner support claw 6, providing the necessary radial support force for the opening of the first inner support claw 5 and the second inner support claw 6. It is the guiding function of the main support base 2 and the supporting and avoidance design of the auxiliary support base 4 that work together to lay a solid structural foundation for the smooth operation of the first inner support claw 5 and the second inner support claw 6.

[0028] As a further optimization of the above technical solution, the linear motion element 1 is preferably any one of a cylinder, hydraulic cylinder, or linear motor, which can be flexibly selected according to the actual working conditions of the tooling. The fixed end of the linear motion element 1 is connected to the main support 2, and the output end of the linear motion element 1 is connected to the power push rod 3 for transmission. Through axial extension and retraction, the power push rod 3 is driven to reciprocate along the inner cavity of the main support 2. The power push rod 3 serves as the core transmission carrier of the driving force. One end of the power push rod 3 is connected to the linear motion element 1 to receive power, and the other end of the power push rod 3 is hinged to the first inner support claw 5 and the second inner support claw 6 respectively through the first hinge pin 7 and the second hinge pin 8, realizing the synchronous transmission of driving force to the two sets of inner support claws, the first inner support claw 5 and the second inner support claw 6.

[0029] It should also be noted that an annular lubrication groove is formed on the outer peripheral wall of the power push rod 3. This groove is filled with solid grease, while the area in the main support 2 that contacts the power push rod 3 is coated with a wear-resistant lubricating layer. In practical applications, the solid grease in the annular lubrication groove and the wear-resistant lubricating layer work together to significantly reduce the frictional resistance of the power push rod 3 during movement. This ensures the accuracy of the driving force transmission, reduces wear between the power push rod 3 and the main support 2, extends the overall service life of the tooling, and effectively prevents the tooling clamping efficiency from being affected by the movement of the power push rod 3 becoming stuck.

[0030] The first inner support claw 5 and the second inner support claw 6, which perform the clamping function, are structurally designed to fully consider the practicality and stability of deep clamping of the annular part, such as... Figure 9 , 10 As shown, the first inner support claw 5 and the second inner support claw 6 are structurally symmetrical. The outer wall of the first inner support claw 5 is provided with a first linkage inclined surface 51, and the outer wall of the second inner support claw 6 is provided with a second linkage inclined surface 61. Both the first linkage inclined surface 51 and the second linkage inclined surface 61 are adapted to the guide inclined surface 21 of the main support seat 2, ensuring smooth retraction of the first inner support claw 5 and the second inner support claw 6. Crucially, the ends of the first inner support claw 5 and the second inner support claw 6 furthest from the power push rod 3 are designed as long arm extensions. This eliminates the need for additional extension structures in the tooling, allowing the long arm extensions of the first inner support claw 5 and the second inner support claw 6 to directly penetrate deep into the annular part, effectively avoiding the structural redundancy problems caused by additional components in traditional tooling.

[0031] Depend on Figure 9 , 10 As can be clearly seen in the diagram, the free end of the first inner support claw 5 has a first extended contact portion 52, and the free end of the second inner support claw 6 has a second extended contact portion 62. When the first inner support claw 5 and the second inner support claw 6 are in the open state, the first extended contact portion 52 and the second extended contact portion 62 can work together to form an annular contact surface that matches the curvature of the inner wall of the annular part. In the actual clamping process, the long arm extensions of the first inner support claw 5 and the second inner support claw 6 ensure that the tooling can reach the deep part inside the annular part, and the annular contact surface formed by the first extended contact portion 52 and the second extended contact portion 62 significantly improves the clamping stability of the tooling on the annular part, preventing the annular part from shifting during inspection or processing, and successfully achieving the dual goals of tooling depth accessibility and stable clamping.

[0032] The specific operation flow of the long-arm inner support fixture for the ring-shaped part is roughly as follows: In the initial state, the first inner support claw 5 and the second inner support claw 6 are in a retracted state, facilitating insertion into the ring-shaped part; when it is necessary to clamp the ring-shaped part, the linear motion element 1 drives the power push rod 3 to move towards the auxiliary support seat 4. The power push rod 3 drives the first inner support claw 5 and the second inner support claw 6 to move synchronously through the first hinge pin 7 and the second hinge pin 8. At the same time, the first linkage inclined surface 51 and the second linkage inclined surface 61 gradually break away from the constraint of the guide inclined surface 21, and in tension... Under the radial thrust of the drive pin 9, the first inner support claw 5 and the second inner support claw 6 open outwards until the annular contact surface formed by the first outer contact portion 52 and the second outer contact portion 62 completely abuts against the inner wall of the annular part, thus completing the stable clamping of the annular part. When it is necessary to release the annular part, the linear motion element 1 drives the power push rod 3 to move in the opposite direction. The first linkage inclined surface 51, the second linkage inclined surface 61 and the guide inclined surface 21 contact each other again and squeeze each other, forcing the first inner support claw 5 and the second inner support claw 6 to retract inwards and disengage from the inner wall of the annular part. In the entire action process, the power output of the linear motion element 1, the power transmission of the power push rod 3, the guiding constraint of the main support seat 2, the support assistance of the auxiliary support seat 4 and the execution action of the first inner support claw 5 and the second inner support claw 6 form a complete closed loop. The transmission connection is smooth, and the opening and closing operation of the tooling can be completed quickly without the aid of additional tools.

[0033] In summary, the long-arm internal support fixture for the annular part has achieved the following beneficial technical effects in practical applications: On the one hand, by leveraging the long-arm design of the first internal support claw 5 and the second internal support claw 6, and the synergistic effect of the annular contact surface formed by the first extended contact part 52 and the second extended contact part 62, the limitations of the range and insufficient stability of the deep clamping inside the annular part have been successfully solved; on the other hand, relying on the modular assembly structure of the main support seat 2 and the auxiliary support seat 4, the lubrication optimization of the power push rod 3 and the main support seat 2, and the smooth transmission between the components, the fixture's ease of maintenance, service life, and operational efficiency have been balanced.

[0034] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A long-arm inner support fixture for a ring-shaped component, characterized in that, It includes a linear motion element, a main support, a power push rod, an auxiliary support, a first inner support claw, a second inner support claw, a first hinge pin, a second hinge pin, and an opening drive pin; The auxiliary support base is fixedly installed on one side of the main support base; The side of the main support base away from the auxiliary support base is fixedly connected to the linear motion element, and its inner cavity is provided with a guide slope. The power push rod is built into the inner cavity of the main support seat. One end of the rod is connected to the output end of the linear motion element, and the other end is hinged to the first inner support claw through the first hinge pin and to the second inner support claw through the second hinge pin. The opening drive pin is inserted and fixed in the inner cavity of the auxiliary support seat, and extends across the first inner support claw and the second inner support claw; The outer walls of the first inner support claw and the second inner support claw are provided with a linkage inclined surface adapted to the guide inclined surface, and the ends of both away from the power push rod are long arm extensions for extending into the interior of the annular part. When the linear motion element drives the power push rod to move axially, it causes the first inner support claw and the second inner support claw to move synchronously: when moving away from the auxiliary support seat, the linkage inclined surface and the guide inclined surface press against each other, realizing the inward retraction of the first inner support claw and the second inner support claw; when moving closer to the auxiliary support seat, the linkage inclined surface disengages from the guide inclined surface, and in conjunction with the radial outward pushing action of the opening drive pin, realizes the opening of the first inner support claw and the second inner support claw, and their long arm extension section abuts against the inner wall of the annular part.

2. The annular component long arm inner support fixture according to claim 1, characterized in that, The free end of the first inner support claw is formed with a first extended abutment portion; the free end of the second inner support claw is formed with a second extended abutment portion; in the open state, the first extended abutment portion and the second extended abutment portion cooperate to form an annular abutment surface that matches the curvature of the inner wall of the annular part.

3. The annular component long arm inner support fixture according to claim 1, characterized in that, The auxiliary support base is fixed to the main support base by means of multiple sets of screws; the auxiliary support base is formed with multiple mounting through holes evenly distributed along its circumference for the screws to pass through; the end face of the main support base facing the auxiliary support base is formed with multiple threaded holes corresponding one-to-one with the mounting through holes for the screws to be screwed in.

4. The annular component long arm inner support fixture according to claim 1, characterized in that, The outer peripheral wall of the power push rod is provided with an annular lubrication groove extending along its axial direction; the annular lubrication groove is filled with solid grease; the area in the inner cavity of the main support seat that contacts the outer peripheral wall of the power push rod is provided with a wear-resistant lubricating coating.

5. The annular long-arm inner support fixture according to any one of claims 1-4, characterized in that, The linear motion element is any one of a cylinder, a hydraulic cylinder, or a linear motor.

Images