A tooling fixture for clamping a profiled workpiece

Abstract

This utility model relates to the field of irregular workpiece clamping technology, and discloses a tooling fixture for clamping irregular workpieces, including a base, a slide table arranged on the upper side of the base, and multiple top rods arranged on the inner side of the slide table. An adjustment mechanism and a flexible clamping mechanism are arranged on the upper side of the base. The adjustment mechanism is arranged outside the flexible clamping mechanism. The adjustment mechanism includes multiple supports, which are fixedly connected to the upper surface of the base. Electric push rods are fixedly connected to the inner side of each support. The multiple electric push rods are respectively fixedly connected to one side of an adjacent slide table. Slider blocks are fixedly connected to the lower surface of each slide table. The slider blocks are slidably connected inside the base. A rotating frame is rotatably connected inside each slide table. The flexible clamping mechanism is used to clamp irregular workpieces, improving practicality. The adjustment mechanism is used to adjust the horizontal and vertical positions of the top rods, thereby improving the clamping adaptability of the device.

Description

Technical Field

[0001] This utility model relates to the field of irregular workpiece clamping technology, specifically a tooling fixture for clamping irregular workpieces. Background Technology

[0002] Clamping irregularly shaped workpieces (such as those with complex curved surfaces, irregular shapes, or poor rigidity) is a key challenge in manufacturing, requiring specialized tooling fixtures. The core of these fixtures lies in precise positioning and reliable clamping, ensuring stability and accuracy during machining or assembly. For irregular shapes, tooling typically employs non-standard designs, including custom-profiled positioning elements, adjustable or adaptive clamping mechanisms (such as hydraulic, pneumatic, or mechanical linkages), and sometimes multi-point, floating, or flexible clamping to distribute pressure and prevent deformation. The design must fully consider the workpiece's center of gravity, clamping point layout, and machining forces, balancing rapid clamping with operational safety. Highly efficient fixtures for irregularly shaped workpieces can significantly improve production efficiency, product quality, and process reliability, and are an important component of automated and flexible manufacturing systems.

[0003] Common types of fixtures for irregularly shaped parts include fractal vises and flexible clamps. Both can provide different clamping effects for irregularly shaped parts. Fractal vises can provide rigid clamping of workpieces, but they have few contact points, which can easily lead to loose clamping or damage to the workpiece. Flexible clamps use a large number of distributed push rods to clamp the workpiece, but due to the large number of push rods, it is difficult to control their extension to clamp the workpiece. Moreover, their fixed positions make it difficult to achieve a good clamping effect on larger workpieces, so the practicality of these two devices needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide a tooling fixture for clamping irregularly shaped workpieces, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a tooling fixture for clamping irregularly shaped workpieces, comprising a base, a slide table disposed on the upper side of the base, and a plurality of top rods disposed on the inner side of the slide table; an adjustment mechanism and a flexible clamping mechanism are disposed on the upper side of the base, and the adjustment mechanism is disposed on the outer side of the flexible clamping mechanism.

[0006] The adjustment mechanism includes multiple supports, which are fixedly connected to the upper surface of the base. Electric actuators are fixedly connected to the inner side of each support. Each electric actuator is fixedly connected to one side of an adjacent slide. A slider is fixedly connected to the lower surface of each slide, and the sliders are slidably connected inside the base. A rotating frame is rotatably connected inside each slide. An adjustment groove is provided on the upper side of each slide, and a worm gear groove is provided on the upper side of each rotating frame. A support is fixedly connected inside each slide, and a worm gear is rotatably connected inside each support. Each support is located inside the adjustment groove and engages with the adjacent worm gear groove.

[0007] Preferably, the base has a sliding groove inside.

[0008] Preferably, all the sliders are provided with a convex cross-section.

[0009] Preferably, a screw block is fixedly connected to one end of each worm gear.

[0010] Preferably, the flexible clamping mechanism includes arc-shaped grooves, which are evenly distributed inside multiple rotating frames. Multiple sliding tables each have sliding grooves inside. Sliding cylinders are slidably connected to adjacent arc-shaped grooves and sliding grooves. Baffles are fixedly connected to both ends of each sliding cylinder, and the baffles are slidably connected to the sliding table and rotating frame respectively. Sliding plates are sealed and slidably connected inside each sliding cylinder. Springs are fixedly connected between the adjacent sides of multiple sliding plates and the inner wall of each sliding cylinder. Pressure-distributing cylinders are fixedly connected inside each sliding table. Pressure-distributing pipes are connected between each pressure-distributing cylinder and adjacent sliding cylinders. Pressure supply ports are connected to the opposite sides of each pressure-distributing cylinder.

[0011] Preferably, the number of adjustment grooves and worm gear grooves are the same.

[0012] Preferably, the plurality of pressure-distributing cylinders are all connected together.

[0013] Compared with the prior art, this utility model provides a tooling fixture for clamping irregularly shaped workpieces, which has the following beneficial effects:

[0014] 1. The flexible clamping mechanism is used to clamp irregularly shaped workpieces. This mechanism can clamp the workpiece through an extendable push rod, avoiding the problem of slight workpiece wobbling. At the same time, the position of multiple push rods can be adjusted, so that the device can accommodate more workpieces of different sizes and make the clamping points more suitable for the workpiece to be clamped, improving the clamping contact points with the workpiece. In addition, compared with the parting clamp, this mechanism has more clamping points, reducing the occurrence of clamping instability and improving practicality.

[0015] 2. The adjustment mechanism is used to adjust the horizontal and vertical positions of the push rod. This mechanism can improve the clamping adaptability of the device by adjusting the position of the push rod so that the flexible clamping mechanism can better clamp the workpiece. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0019] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 4 This is a schematic diagram of the support structure in this utility model;

[0021] Figure 5 This is a schematic diagram of the arc-shaped groove in this utility model.

[0022] In the diagram: 1. Base; 2. Slide table; 3. Top rod; 4. Adjustment mechanism; 401. Support; 402. Electric actuator; 403. Slider; 404. Rotating frame; 405. Adjustment groove; 406. Worm gear groove; 407. Support platform; 408. Worm; 5. Flexible clamping mechanism; 501. Arc groove; 502. Slide groove; 503. Slide cylinder; 504. Baffle; 505. Slide plate; 506. Spring; 507. Pressure dividing cylinder; 508. Pressure dividing tube; 509. Pressure supply port. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Example 1:

[0026] Please see Figure 1-5The present invention provides a technical solution: a tooling fixture for clamping irregularly shaped workpieces, including a base 1, a slide 2 provided on the upper side of the base 1 and a plurality of top rods 3 provided on the inner side of the slide 2, an adjustment mechanism 4 and a flexible clamping mechanism 5 provided on the upper side of the base 1, and the adjustment mechanism 4 being provided on the outer side of the flexible clamping mechanism 5.

[0027] This mechanism assists the flexible clamping mechanism 5 in adjustment, improving the flexibility and stability of the device. The adjustment mechanism 4 includes multiple supports 401, which are fixedly connected to the upper surface of the base 1. Electric push rods 402 are fixedly connected to the inner side of each support 401. Each electric push rod 402 is fixedly connected to one side of a nearby slide table 2. Each slide table 2 has a slider 403 fixedly connected to its lower surface. The sliders 403 are slidably connected inside the base 1. Each slide table 2 has a rotating frame 404 rotatably connected inside. Each slide table 2 has an adjustment groove 405 on its upper side. Each rotating frame 404 has a worm gear groove 406 on its upper side. Each slide table 2 has a support 407 fixedly connected inside. Each support 407 has a worm gear 408 rotatably connected inside. Each support 407 is located inside the adjustment groove 405 and meshes with the nearby worm gear groove 406.

[0028] Furthermore, a sliding groove 502 is provided inside the base 1.

[0029] Furthermore, all sliders 403 are configured with a convex cross-section.

[0030] Furthermore, a screw block is fixedly connected to one end of each worm gear 408.

[0031] Example 2:

[0032] This mechanism is used to clamp irregularly shaped workpieces. It improves the adjustability and telescoping capability of the push rod 3, allowing the workpiece to be clamped while ensuring the push rod 3 can be adjusted to a more suitable clamping point. Please refer to [link / reference needed]. Figure 1-5 Furthermore, in conjunction with Embodiment 1, the flexible clamping mechanism 5 includes an arc-shaped groove 501, which is evenly opened inside multiple rotating frames 404. Multiple sliding tables 2 are each provided with a sliding groove 502. Sliding cylinders 503 are slidably connected inside adjacent arc-shaped grooves 501 and sliding grooves 502. Baffles 504 are fixedly connected to both ends of the sliding cylinders 503. The baffles 504 are slidably connected to the sliding tables 2 and rotating frames 404 respectively. Sliding plates 505 are slidably connected inside the sliding cylinders 503. Springs 506 are fixedly connected between the adjacent side of multiple sliding plates 505 and the inner wall of the sliding cylinders 503. Pressure dividing cylinders 507 are fixedly connected inside the sliding tables 2. Pressure dividing cylinders 507 and adjacent sliding cylinders 503 are connected with pressure-reducing pipes 508. Pressure supply ports 509 are connected to the opposite side of the pressure dividing cylinders 507.

[0033] Furthermore, the number of adjusting grooves 405 and worm gear grooves 406 is the same.

[0034] Furthermore, multiple pressure-dividing cylinders 507 are all connected together.

[0035] In actual operation, when this device is used, the user places the workpiece inside the slide table 2. The user can then adjust the position of the corresponding push rod 3 according to the size of the workpiece's two sides. The user can install a tightening block to rotate the worm gear 408. After the worm gear 408 rotates, it engages with the worm wheel groove 406 to deflect the rotating frame 404, thereby creating a misalignment between the arc-shaped groove 501 and the slide groove 502. This misalignment causes the arc-shaped groove 501 to push the slide cylinder 503 to change position, allowing multiple push rods 3 to approach or spread out to accommodate the area of ​​the clamping surface and increase the distribution of clamping points. To ensure uniformity, after the positions of the push rods 3 are all adjusted to the appropriate area, the user controls the electric push rod 402 to bring the slides 2 closer together. After the push rods 3 approach the workpiece, the user can supply air pressure into the pressure distribution cylinder 507. Since the multiple slides 503 are in a connected state, the pressure of the multiple push rods 3 can be uniform, reducing the probability of damage. At this time, the air pressure inside the slide 503 increases, and the push rods 3 are pushed closer to the workpiece by the push plate. After the push rods 3 come into contact with the workpiece, the push rods 3 that are spaced from the workpiece surface will continue to approach the workpiece until all the push rods 3 lose their free stroke. At this time, the workpiece is clamped by the multiple push rods 3.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A tooling fixture for clamping irregularly shaped workpieces, comprising a base (1), a slide (2) disposed on the upper side of the base (1), and a plurality of push rods (3) disposed on the inner side of the slide (2), characterized in that: An adjustment mechanism (4) and a flexible clamping mechanism (5) are provided on the upper side of the base (1), and the adjustment mechanism (4) is located on the outside of the flexible clamping mechanism (5); The adjustment mechanism (4) includes multiple supports (401), which are fixedly connected to the upper surface of the base (1). Electric actuators (402) are fixedly connected to the inner side of each support (401). Each electric actuator (402) is fixedly connected to one side of an adjacent slide (2). A slider (403) is fixedly connected to the lower surface of each slide (2). The sliders (403) are slidably connected inside the base (1). The slide (2) is rotatably connected to a rotating frame (404) inside each slide (2). An adjustment groove (405) is opened on the upper side of each slide (2). A worm gear groove (406) is opened on the upper side of each rotating frame (404). A support (407) is fixedly connected inside each slide (2). A worm (408) is rotatably connected inside each support (407). The support (407) is set inside the adjustment groove (405) and is respectively engaged with the worm gear groove (406) of the adjacent slide (2).

2. The tooling fixture for clamping irregularly shaped workpieces according to claim 1, characterized in that: The base (1) has a sliding groove (502) inside.

3. A tooling fixture for clamping irregularly shaped workpieces according to claim 1, characterized in that: The sliders (403) are all provided with a convex cross-section.

4. A tooling fixture for clamping irregularly shaped workpieces according to claim 1, characterized in that: Each of the worm gears (408) has a screw block fixedly connected to one end.

5. A tooling fixture for clamping irregularly shaped workpieces according to claim 1, characterized in that: The flexible clamping mechanism (5) includes an arc-shaped groove (501), which is evenly opened inside multiple rotating frames (404). Each of the multiple sliding tables (2) has a sliding groove (502). Sliding cylinders (503) are slidably connected inside adjacent arc-shaped grooves (501) and sliding grooves (502). Both ends of each sliding cylinder (503) are fixedly connected to baffles (504), which are slidably connected to the sliding table (2) and the rotating frame (404) respectively. Each of the slide cylinders (503) is sealed and slidably connected with a slide plate (505). A spring (506) is fixedly connected between the side of the slide plate (505) that is close to the inner wall of the slide cylinder (503). Each of the slide tables (2) is fixedly connected with a pressure dividing cylinder (507). A pressure transferring pipe (508) is connected between the pressure dividing cylinder (507) and the adjacent slide cylinder (503). A pressure supply port (509) is connected to the side of the pressure dividing cylinder (507) that is far away from the pressure dividing cylinder (507).

6. A tooling fixture for clamping irregularly shaped workpieces according to claim 5, characterized in that: The number of adjustment grooves (405) and worm gear grooves (406) is the same.

7. A tooling fixture for clamping irregularly shaped workpieces according to claim 5, characterized in that: Multiple pressure-distributing cylinders (507) are connected in a series.

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