Adjustable fixture for machining of parts

Abstract

The utility model relates to the technical field of part processing, specifically relates to a adjustable clamp for part processing, be provided with two movable clamping units on the support platform, and each clamping unit includes a clamping plate, the clamp still includes first adjusting mechanism and second adjusting mechanism, first adjusting mechanism is used for driving clamping unit to move on the support platform horizontally to adjust the clamping spacing, and second adjusting mechanism is used for driving the clamping plate to move relative to clamping unit to adjust the clamping pressure, and first adjusting mechanism and second adjusting mechanism work together, realize the automatic clamping fixation to the part, and first adjusting mechanism and second adjusting mechanism independent control, constitute two -level regulation system, the clamp of using the utility model has the advantage of quick response and precision control simultaneously, lays a solid foundation for adapting complex and varied processing demand, and the intelligent level and process adaptability of clamping are improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of parts processing technology, specifically to an adjustable fixture for parts processing. Background Technology

[0002] In the field of mechanical parts processing, especially on automated equipment such as CNC machine tools, fixtures are indispensable process equipment. Their core function is to reliably position and clamp the workpiece during processing, ensuring consistent machining accuracy. Traditional fixtures commonly used in existing technologies, such as manual vises or special clamps, are gradually revealing the following technical bottlenecks when facing the demands of modern production involving diverse varieties and small batches: Poor adaptability and low changeover efficiency: Traditional fixtures typically have a fixed clamping range. When machining parts of different sizes or shapes, it is often necessary to disassemble and replace the entire fixture. This changeover operation is not only time-consuming and labor-intensive, significantly reducing the effective uptime of machine tools, but also requires operators to have a high level of skill, increasing labor costs and the risk of errors.

[0003] Limited adjustment capabilities and difficulty in guaranteeing clamping accuracy: Some clamps with certain adjustment capabilities typically have limited adjustment dimensions. For example, they may only allow for coarse spacing adjustments and lack the ability to fine-tune the clamping force, or vice versa. This single-dimensional adjustment makes it difficult to provide a stable and uniform clamping force while quickly adapting to changes in part dimensions. Insufficient clamping force may cause workpiece displacement during machining, affecting accuracy; excessive clamping force may damage the surface of precision workpieces.

[0004] Low level of automation: Many fixtures rely on manual operation for locking and unlocking, which not only increases the labor intensity of operators, but also makes it difficult to seamlessly integrate this process into automated production lines, becoming a bottleneck that restricts the improvement of overall production efficiency.

[0005] Therefore, there is an urgent need in this field for an intelligent tooling fixture with multi-level and multi-dimensional adjustment capabilities, capable of quickly adapting to parts of different specifications and easily achieving automated control, in order to solve the problems of insufficient flexibility, low efficiency and difficulty in automation integration of existing technologies. Utility Model Content

[0006] This invention overcomes the shortcomings of the prior art and provides an adjustable fixture for parts processing, especially one with multi-level and multi-dimensional adjustment capabilities, which can quickly adapt to the characteristics of parts of different specifications.

[0007] The technical problem solved by this utility model can be achieved by the following technical solution: An adjustable fixture for machining parts includes a support platform with two movable clamping units on the support platform, each clamping unit including a clamping plate. The fixture also includes a first adjustment mechanism and a second adjustment mechanism. The first adjustment mechanism drives the clamping units to move horizontally on the support platform to adjust the clamping distance, and the second adjustment mechanism drives the clamping plate to move relative to the clamping units to adjust the clamping pressure. The first and second adjustment mechanisms work together to achieve automatic clamping and fixing of the parts, and the first and second adjustment mechanisms are independently controlled, forming a two-stage adjustment system. Furthermore, the first adjustment mechanism includes at least one power source, which is fixedly installed inside the support platform. The output end of the power source is connected to a sliding component, which is slidably connected to the support platform. A vertical plate is fixedly connected to the sliding component, and the clamping plate is installed on the vertical plate through the second adjustment mechanism. The sliding component is a sliding cover, the shape of which matches the inner wall of the support platform, and has a rectangular cover structure, used to accommodate the power source and transmit motion.

[0008] Furthermore, the power source is an electro-hydraulic actuator, and a support block is provided at the bottom of the inner wall of the support platform. The support block is plate-shaped, and the electro-hydraulic actuator is fixed to the support block inside the support platform. The telescopic end of the electro-hydraulic actuator is fixedly connected to the inner wall of the sliding cover, and the sliding cover is driven to slide along the inner wall of the support platform by the telescopic movement of the electro-hydraulic actuator.

[0009] Furthermore, the second adjustment mechanism includes a drive device, a rotating shaft, and a moving component. The drive device is fixedly mounted on the upright plate, and the rotating shaft is rotatably supported on the upright plate via bearings and connected to the output end of the drive device. The moving component is threadedly engaged with the rotating shaft, and a sliding plate is fixedly connected to the moving component. The clamping plate is fixedly mounted on the sliding plate. The rotating shaft is a threaded shaft with threads on its outer surface, and the moving component is a threaded ring with matching threads in its inner hole. The rotational motion is converted into linear motion through the threaded engagement.

[0010] Furthermore, the driving device is a drive motor, which is mounted on the upright plate by a fixing block. The fixing block is a block structure and is symmetrically arranged on both sides of the upright plate to enhance the stability of the drive motor. One end of the threaded shaft is fixedly connected to the output end of the drive motor, and the other end is supported on the upright plate by a bearing.

[0011] Furthermore, the upright plate is provided with a guide mechanism, which includes a groove and a slide plate. The groove is formed on the upper surface of the upright plate and is shaped as an elongated groove. The slide plate is slidably connected in the groove and fixedly connected to the sliding plate to limit the rotation of the sliding plate and ensure that the sliding plate moves only in a straight line.

[0012] Furthermore, the support platform is provided with a limiting mechanism, which includes a limiting hole and a limiting block. The limiting hole is opened on the outer surface of the support platform and is rectangular in shape. The limiting block is slidably connected in the limiting hole and fixedly connected to the sliding cover to limit the movement range of the sliding cover and prevent the sliding cover from falling out.

[0013] Furthermore, the upper surface of the support platform is provided with a sliding opening, which is a long strip-shaped through hole. The upright plate passes through the sliding opening and is slidably connected to it, so that the upright plate can move horizontally with the sliding cover. The sliding opening is embedded with a self-lubricating material to reduce friction.

[0014] Furthermore, the bottom of the support platform is fixedly connected to a mounting plate. The mounting plate is plate-shaped with a recessed hole and a mounting hole on its bottom surface. The recessed hole is a countersunk hole structure used to accommodate the installation tool, and the mounting hole is a threaded hole used to fix the clamp to the external equipment with bolts.

[0015] Furthermore, the first and second adjustment mechanisms are electrically connected to the control system, which is configured to automatically adjust the clamping spacing and clamping pressure according to the part size to achieve adaptive clamping; the working surface of the clamping plate is provided with replaceable clamping blocks, the shape of which matches the contour of the part to enhance clamping stability.

[0016] The beneficial effects of this utility model are: Compared with the prior art, the adjustable clamp of this utility model is used for parts processing. By setting a support block and two electro-hydraulic push rods inside the support platform, the extension and retraction of the two electro-hydraulic push rods can drive the two sliding covers and the two vertical plates to move closer or further apart. At the same time, the two clamping plates will move accordingly, thereby providing power for the position adjustment of the two clamping plates, which will make it more flexible to clamp and fix parts of different specifications.

[0017] The clamp of this utility model uses the operation of two drive motors to drive two threaded shafts and two threaded rings to engage with each other, which allows the two sliding plates to move closer together. At the same time, it also drives the two clamping plates to move, achieving the effect of automatically clamping and fixing the parts above the support platform without the need for manual clamping, thus improving the clamping and fixing speed of the parts. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the front view of this utility model.

[0020] Figure 2This is a front cross-sectional view of the present invention.

[0021] Figure 3 This is a three-dimensional structural schematic diagram of the rear view of this utility model.

[0022] Figure 4 This is a three-dimensional structural schematic diagram of the vertical plate of this utility model from a top view.

[0023] In the diagram: 1-Support platform; 2-Sliding cover; 3-Support block; 4-Electro-hydraulic actuator; 5-Upright plate; 6-Drive motor; 7-Bearing; 8-Threaded shaft; 9-Threaded ring; 10-Sliding plate; 11-Clamping plate; 12-Slide plate; 13-Slide groove; 14-Fixing block; 15-Limiting hole; 16-Limiting block; 17-Mounting plate; 18-Concave hole; 19-Mounting hole; 20-Slide opening. Detailed Implementation

[0024] First, it should be noted that the terminology used in the various embodiments of this utility model is as follows: The control system in this utility model is a PLC controller. The PLC controller of this utility model uses existing equipment, and the control method is a conventional design, which will not be described in detail in this utility model.

[0025] The following will provide a detailed description of the technical solution of an adjustable fixture for parts processing provided by this utility model through several specific embodiments.

[0026] Reference Figure 1 and Figure 2 As shown, an adjustable fixture for machining parts includes a support platform 1 with two movable clamping units on the support platform 1. Each clamping unit includes a clamping plate 11. In this embodiment, the two movable clamping units are used to clamp parts of different specifications. The fixture also includes a first adjustment mechanism and a second adjustment mechanism. The first adjustment mechanism is used to drive the clamping units to move horizontally on the support platform 1 to adjust the clamping distance, and the second adjustment mechanism is used to drive the clamping plate 11 to move relative to the clamping units to adjust the clamping pressure. The first adjustment mechanism and the second adjustment mechanism work together to achieve automatic clamping and fixing of the parts, and the first adjustment mechanism and the second adjustment mechanism are independently controlled to form a two-level adjustment system.

[0027] In this embodiment, the first adjustment mechanism drives the clamping unit to move horizontally across a wide range on the support platform, enabling rapid adaptation and coarse positioning of parts and workpieces of different sizes. This process solves the problem of cumbersome changeover in traditional fixtures and achieves flexible adjustment of the clamping distance. In this embodiment, the second adjustment mechanism is activated after positioning is completed, precisely controlling the clamping plate to make micro-movements relative to its unit to apply and control the final clamping force. This mechanism ensures precise and controllable clamping force, effectively preventing workpiece deformation due to overpressure or loosening due to underpressure.

[0028] The two-stage mechanism can work together to achieve a fully automated process from positioning to clamping, while also being completely independent in terms of control. The fixture using this invention has the advantages of both rapid response and precise control, laying a solid foundation for adapting to complex and diverse processing needs, and significantly improving the intelligence level and process adaptability of clamping.

[0029] In this utility model, the first adjustment mechanism and the second adjustment mechanism are also electrically connected to a control system. The control system is configured to automatically adjust the clamping distance and clamping pressure according to the size of the part to achieve adaptive clamping.

[0030] The working surface of the clamping plate 11 in this utility model may also be provided with a replaceable clamping block. The shape of the clamping block matches the contour of the part to enhance clamping stability. The clamping block is connected to the clamping plate 11 by magnetic adsorption, snap-fit ​​or bolt. The material or shape of the clamping block 25 can be replaced to adapt to the clamping requirements of different workpieces.

[0031] Refer to Figure 2 As shown, the first adjustment mechanism includes at least one power source, which is fixedly installed inside the support platform 1. The output end of the power source is connected to a sliding component, which is slidably connected to the support platform 1. A vertical plate 5 is fixedly connected to the sliding component, and a clamping plate 11 is installed on the vertical plate 5 through the second adjustment mechanism. The sliding component is a sliding cover 2, whose shape matches the inner wall of the support platform 1 and has a rectangular cover structure, which is used to accommodate the power source and transmit motion.

[0032] The power source in this invention is an electro-hydraulic actuator 4. A support block 3 is provided at the bottom of the inner wall of the support platform 1. The support block 3 has a plate-like structure, and the electro-hydraulic actuator 4 is fixed to the support block 3 inside the support platform 1. The telescopic end of the electro-hydraulic actuator 4 is fixedly connected to the inner wall of the sliding cover 2. The telescopic extension of the electro-hydraulic actuator 4 drives the sliding cover 2 to slide along the inner wall of the support platform 1. This invention uses an electro-hydraulic actuator, which has an integrated electromechanical-hydraulic fully enclosed design, small size, no oil leakage, and long service life.

[0033] Reference Figure 2 , Figure 3 and Figure 4As shown, the second adjustment mechanism includes a drive device, a rotating shaft, and a moving component. The drive device is fixedly installed on the upright plate 5. The rotating shaft is rotatably supported on the upright plate 5 through a bearing 7 and is connected to the output end of the drive device. The moving component is threadedly engaged with the rotating shaft. A sliding plate 10 is fixedly connected to the moving component, and a clamping plate 11 is fixedly installed on the sliding plate 10. The rotating shaft is a threaded shaft 8 with threads on its outer surface. The moving component is a threaded ring 9 with matching threads in its inner hole. The rotational motion is converted into linear motion through the threaded engagement.

[0034] The driving device in this utility model is a drive motor 6. The drive motor 6 is mounted on the upright plate 5 by a fixing block 14. The fixing block 14 is a block structure and is symmetrically arranged on both sides of the upright plate 5 to enhance the stability of the drive motor 6. One end of the threaded shaft 8 is fixedly connected to the output end of the drive motor 6, and the other end is supported on the upright plate 5 by a bearing 7. The drive motor 6 can drive the two threaded shafts 8 to engage with the threaded rings 9, which will bring the two sliding plates 10 closer to each other and also drive the two clamping plates 11 to move, enabling the parts above the support platform 1 to be quickly clamped and fixed.

[0035] The upright plate 5 of this utility model is provided with a guide mechanism, which includes a groove 13 and a slide plate 12. The groove 13 is opened on the upper surface of the upright plate 5 and is shaped as an elongated groove. The slide plate 12 is slidably connected in the groove 13 and fixedly connected to the sliding plate 10 to limit the rotation of the sliding plate 10 and ensure that the sliding plate 10 moves only in a straight line.

[0036] The cross-section of the slide groove 13 in this utility model can also be set in a T-shaped structure, and the slide plate 12 is provided with a corresponding T-shaped protrusion. The positioning accuracy is high and there will be no offset. At the same time, the geometry of the T-shaped groove can achieve high-precision alignment. The T-shaped protrusion of the slide plate can ensure the precise positioning of the component in three directions (up and down, left and right, front and back), with the error controlled within ±0.05mm.

[0037] Reference Figure 3 As shown, the support platform 1 of this utility model is provided with a limiting mechanism, which includes a limiting hole 15 and a limiting block 16. The limiting hole 15 is opened on the outer surface of the support platform 1 and is rectangular in shape. The limiting block 16 is slidably connected in the limiting hole 15 and fixedly connected to the sliding cover 2 to limit the movement range of the sliding cover 2 and prevent the sliding cover 2 from falling out.

[0038] Reference Figure 1As shown, the upper surface of the support platform 1 in this utility model is provided with a sliding opening 20. The sliding opening 20 is a long strip-shaped through hole. The upright plate 5 passes through the sliding opening 20 and is slidably connected to the sliding opening 20, so that the upright plate 5 can move horizontally with the sliding cover 2. The sliding opening 20 in this utility model can also be embedded with a self-lubricating material to reduce friction. The self-lubricating material can be made into a matching self-lubricating bushing. The self-lubricating bushing is made of polytetrafluoroethylene or similar low-friction material to promote the smooth movement of the upright plate 5.

[0039] Reference Figure 1 As shown, a mounting plate 17 is fixedly connected to the bottom of the support platform 1. The mounting plate 17 is plate-shaped, and its bottom surface has a recessed hole 18 and a mounting hole 19. The recessed hole 18 is a countersunk hole structure used to accommodate the installation tool, and the mounting hole 19 is a threaded hole used to fix the clamp to the external equipment with bolts.

[0040] In summary, the adjustable fixture for parts processing according to this utility model can adapt to workpieces of various shapes and sizes. It can be used by simply changing the parameters of the two-stage mechanism through the program, and is extremely flexible.

[0041] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention, and all such changes are within the protection scope of the technology.

[0042] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0043] The technical solutions of the various embodiments can be combined with each other, but must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

Claims

1. An adjustable fixture for machining parts, comprising a support table (1), characterized in that: The support platform (1) is provided with two movable clamping units, each of which includes a clamping plate (11). The clamp also includes a first adjustment mechanism and a second adjustment mechanism. The first adjustment mechanism is used to drive the clamping unit to move horizontally on the support platform (1) to adjust the clamping distance. The second adjustment mechanism is used to drive the clamping plate (11) to move relative to the clamping unit to adjust the clamping pressure. The first adjustment mechanism and the second adjustment mechanism work together to achieve automatic clamping and fixing of the parts. The first adjustment mechanism and the second adjustment mechanism are independently controlled to form a two-level adjustment system.

2. An adjustable fixture for machining parts according to claim 1, characterized in that: The first adjustment mechanism includes at least one power source, which is fixedly installed inside the support platform (1). The output end of the power source is connected to a sliding component, which is slidably connected to the support platform (1). A vertical plate (5) is fixedly connected to the sliding component, and the clamping plate (11) is installed on the vertical plate (5) through the second adjustment mechanism. The sliding component is a sliding cover (2), whose shape matches the inner wall of the support platform (1) and has a rectangular cover structure, which is used to accommodate the power source and transmit motion.

3. An adjustable fixture for machining parts according to claim 2, characterized in that: The power source is an electro-hydraulic actuator (4). A support block (3) is provided at the bottom of the inner wall of the support platform (1). The support block (3) is plate-shaped. The electro-hydraulic actuator (4) is fixed on the support block (3) inside the support platform (1). The telescopic end of the electro-hydraulic actuator (4) is fixedly connected to the inner wall of the sliding cover (2). The telescopic drive of the electro-hydraulic actuator (4) drives the sliding cover (2) to slide along the inner wall of the support platform (1).

4. An adjustable fixture for machining parts according to claim 2, characterized in that: The second adjustment mechanism includes a drive device, a rotating shaft, and a moving component. The drive device is fixedly installed on the upright plate (5). The rotating shaft is rotatably supported on the upright plate (5) through a bearing (7) and connected to the output end of the drive device. The moving component is threadedly engaged with the rotating shaft. A sliding plate (10) is fixedly connected to the moving component. The clamping plate (11) is fixedly installed on the sliding plate (10). The rotating shaft is a threaded shaft (8) with threads on its outer surface. The moving component is a threaded ring (9) with matching threads in its inner hole. The rotational motion is converted into linear motion through the threaded engagement.

5. An adjustable fixture for machining parts according to claim 4, characterized in that: The driving device is a drive motor (6), which is mounted on the upright plate (5) by a fixing block (14). The fixing block (14) is a block structure and is symmetrically arranged on both sides of the upright plate (5) to enhance the stability of the drive motor (6). One end of the threaded shaft (8) is fixedly connected to the output end of the drive motor (6), and the other end is supported on the upright plate (5) by a bearing (7).

6. An adjustable fixture for machining parts according to claim 4, characterized in that: The upright plate (5) is provided with a guide mechanism, which includes a groove (13) and a slide plate (12). The groove (13) is opened on the upper surface of the upright plate (5) and is in the shape of a long strip groove. The slide plate (12) is slidably connected in the groove (13) and fixedly connected to the sliding plate (10) to limit the rotation of the sliding plate (10) and ensure that the sliding plate (10) moves only in a straight line.

7. An adjustable fixture for machining parts according to claim 2, characterized in that: The support platform (1) is provided with a limiting mechanism, which includes a limiting hole (15) and a limiting block (16). The limiting hole (15) is opened on the outer surface of the support platform (1) and is rectangular in shape. The limiting block (16) is slidably connected in the limiting hole (15) and fixedly connected to the sliding cover (2) to limit the movement range of the sliding cover (2) and prevent the sliding cover (2) from falling out.

8. An adjustable fixture for machining parts according to claim 2, characterized in that: The upper surface of the support platform (1) is provided with a sliding opening (20). The sliding opening (20) is a long strip-shaped through hole. The upright plate (5) passes through the sliding opening (20) and is slidably connected to the sliding opening (20), so that the upright plate (5) can move horizontally with the sliding cover (2). The sliding opening (20) is embedded with a self-lubricating material to reduce friction.

9. An adjustable fixture for machining parts according to claim 1, characterized in that: The bottom of the support platform (1) is fixedly connected to an installation plate (17). The installation plate (17) is plate-shaped and has a recessed hole (18) and an installation hole (19) on its bottom surface. The recessed hole (18) is a countersunk hole structure used to accommodate installation tools, and the installation hole (19) is a threaded hole used to fix the clamp to the external equipment by bolts.

10. An adjustable fixture for machining parts according to claim 1, characterized in that: The first and second adjustment mechanisms are electrically connected to the control system, which is configured to automatically adjust the clamping spacing and clamping pressure according to the size of the part to achieve adaptive clamping; the working surface of the clamping plate (11) is provided with replaceable clamping blocks, the shape of which matches the contour of the part to enhance clamping stability.

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