Thin-wall component clamping tool

Abstract

The invention discloses a thin-wall component clamping tool, and relates to the technical field of CNC machining component clamping, the thin-wall component clamping tool comprises a mounting base, and a positioning block is arranged at the end, away from a servo motor, of a lead screw; a supporting plate is arranged on the outer surface of the sliding block, and a guide rail is arranged on the inner side face of the movable block. An adjusting disc is arranged at the end, away from the movable block, of the supporting plate, a connecting plate is arranged on the outer surface of the adjusting disc, and a clamping mechanism is arranged on the outer surface of the connecting plate. According to the thin-wall component clamping tool, through the arrangement of the precise clamping mechanism and the adjusting mechanism, stable clamping of a thin-wall component is achieved, the deformation problem in the machining process is effectively avoided, a flexible clamping jaw and a rigid clamping plate in the clamping mechanism can be flexibly converted according to the shape of a workpiece and the machining requirement, and the machining efficiency is improved. By means of the clamping device, the clamping accuracy and stability are guaranteed, through accurate control over the servo motor and the stepping motor, accurate adjustment of the clamping position and force is achieved, and the machining accuracy and efficiency are further improved.

Description

Technical Field

[0001] This invention relates to the field of CNC machining component clamping technology, specifically a clamping fixture for thin-walled components. Background Technology

[0002] Thin-walled components can be made of metal, non-metal, or composite materials. They typically have high rigidity and stability, as well as good energy absorption capacity and fatigue resistance. Due to their weak rigidity, thin-walled components have relatively high requirements for clamping during machining. There are many factors that affect the machining accuracy of thin-walled components. When machining components in a CNC machining center, different clamping operations are required according to the machining needs.

[0003] However, existing component clamping fixtures require disassembly and reassembly and adjustment of the clamping position of thin-walled components at each stage of the process. This results in long manual loading and unloading times, low processing efficiency, and increased product processing costs.

[0004] To address the aforementioned deficiencies, Chinese Patent No. CN212858578U discloses a thin-walled aluminum alloy plate clamping fixture, comprising an electromagnet-based constraint member and a metal workpiece pressure plate. Cylinder guide rods are connected to both sides of the metal workpiece pressure plate, which is a rectangular iron workpiece pressure plate. Handles are provided at both ends of the iron workpiece pressure plate along its length. Each handle includes a first plane and a second plane, and is L-shaped. The first and second planes are perpendicular, with the first plane perpendicular to the iron workpiece pressure plate and the second plane parallel to it. The handles extend towards the iron workpiece pressure plate along its length. The cylinder guide rod is bent upwards at both ends, and a cylinder that can slide along the cylinder guide rod is provided at the end of the cylinder guide rod. The lower end face of the sub-plate is provided with a mother plate with the same area as its end face, and the sub-plate and the mother plate are directly connected by a guide pin. The front end of the guide pin connecting the sub-plate and the mother plate is for guiding purposes. In actual operation, the workpiece to be processed is placed above the placement plane of the constraint member under the metal workpiece pressure plate. After power is applied and clamping is performed, the cylinder automatically slides along the cylinder guide rod towards the workpiece until the workpiece is clamped. It can automatically clamp the end face and side face of the workpiece respectively, thereby completely fixing the workpiece to be processed, which can improve processing efficiency and reduce manual operation.

[0005] Furthermore, Chinese Patent No. CN220906421U discloses a small component positioning and clamping fixture, including a conveying mechanism for conveying concrete components; a baffle located at the stacking station of the conveying mechanism, which blocks multiple concrete components to be arranged side-by-side in the conveying direction of the conveying mechanism; two push plates located on both sides of the width direction of the conveying mechanism, which move relative to each other, so that multiple concrete components are arranged linearly after being limited by the push plates; and a baffle that blocks the concrete components, ensuring that the concrete components are arranged side-by-side in the conveying direction and in the width direction of the conveying mechanism. Push plates are provided on both sides, and stepper motors are connected to the chain via drive sprockets. Guide plates adapted to the thickness of concrete components are provided on both sides of the width direction of the conveyor frame. At least two guide posts are provided on the outer side of the push plates. The guide posts are slidably mounted on the guide plates along the width direction of the conveyor frame. Push rods are fixed on the outer side of the guide plates. The push rods pass through the guide plates along the width direction of the conveyor frame and are fixedly connected to the push plates. The concrete components are linearly arranged after being limited by the push plates by the relative compression of the push plates. This arrangement meets the needs of the robotic arm to pick up multiple concrete components at the same time, thereby improving production efficiency.

[0006] The above-mentioned device uses a cylinder to drive the workpiece pressure plate to clamp the workpiece during use, thereby improving processing efficiency. However, the thin-walled components of the device are prone to deformation under the clamping force, which affects the dimensional accuracy and shape of the workpiece. Summary of the Invention

[0007] The purpose of this invention is to provide a clamping fixture for thin-walled components to solve the problem mentioned in the background art that thin-walled components are prone to deformation during clamping, which affects the processing quality of the workpiece.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a thin-walled component clamping fixture, comprising a mounting base, a guide rail provided on the outer surface of the mounting base, a servo motor provided at the top of the mounting base, a lead screw provided at the output end of the servo motor, a sliding block provided on the outer surface of the lead screw, and a positioning block provided at the end of the lead screw away from the servo motor; a support plate provided on the outer surface of the sliding block, a movable block provided on the outer surface of the support plate, and a guide rail provided on the inner side of the movable block; an adjusting plate provided at the end of the support plate away from the movable block, a connecting plate provided on the outer surface of the adjusting plate, and a clamping mechanism for preventing deformation provided on the outer surface of the connecting plate.

[0009] Furthermore, a stepper motor is provided on the outer surface of the support plate, an output shaft is provided at the output end of the stepper motor, and a gear is provided on the outer surface of the output shaft.

[0010] Furthermore, gear one and gear two are meshed together, and an adjustment disc is provided on the outer surface of gear two. The adjustment disc is used to switch the clamping mechanism.

[0011] Furthermore, the clamping mechanism includes a fixed base, a connecting plate is provided on the outer surface of the fixed base, an electric push pump is provided at the end of the fixed base away from the connecting plate, and a flexible clamping claw is provided on the outer surface of the electric push pump.

[0012] Furthermore, the outer surface of the fixed base is provided with two sets of symmetrical positioning rods, the outer surface of the positioning rods is provided with positioning seats, and the outer surface of the positioning seats is provided with flexible clamping claws.

[0013] Furthermore, it also includes a tray, the outer surface of which is provided with a connecting plate, and the inner side of which is provided with a telescopic rod.

[0014] Furthermore, a hydraulic pump is provided on the outer surface of the telescopic rod, and a rigid clamping plate is provided at the end of the telescopic rod away from the hydraulic pump.

[0015] Furthermore, the outer surface of the telescopic rod is provided with a bracket, the inner side of the bracket is provided with a groove, and a limit block is provided at the groove of the bracket.

[0016] Furthermore, the outer surface of the limiting block is provided with a buffer spring, and there are two sets of buffer springs. The two sets of buffer springs are symmetrically designed, and the outer surface of the buffer spring is provided with a rigid clamping plate.

[0017] Furthermore, a movable block is provided on the bottom surface of the bracket, a guide seat is provided on the inner side of the movable block, and a support plate is provided on the bottom surface of the guide seat.

[0018] Compared with the prior art, the beneficial effects of the present invention are: (1) Through the precise clamping and adjustment mechanism, the thin-walled components are stably clamped, effectively avoiding deformation problems during processing. The flexible clamping claws and rigid clamping plates in the clamping mechanism can be flexibly switched according to the shape of the workpiece and processing requirements, ensuring the accuracy and stability of clamping. Through the precise control of servo motors and stepper motors, the clamping position and force are precisely adjusted, further improving the processing accuracy and efficiency. (2) The set buffer spring and limit block effectively absorb the vibration and impact generated during the processing, further protect the thin-walled components from damage, and improve the processing quality. The design of the pallet and telescopic rod enables the clamping fixture to adapt to thin-walled components of different sizes and shapes, enhancing the versatility and practicality of the fixture. (3) Through the coordinated action of the mounting base, guide rail, servo motor, lead screw, sliding block and positioning block and other components, the fast and accurate clamping and positioning of thin-walled components is realized, which greatly shortens the time for loading, unloading and adjustment of workpieces, improves processing efficiency and reduces production costs. The clamping fixture has a simple structure, is easy to operate, and is easy to maintain and repair, providing an efficient and reliable clamping solution for CNC machining of thin-walled components. (4) The servo motor can drive the lead screw to rotate, and the sliding block on the lead screw moves along the lead screw axis. The sliding block is connected to the movable block through the support plate. The movable block moves stably under the guidance of the guide rail, thereby realizing the precise positioning of the thin-walled component in the horizontal direction. The precise control characteristics of the servo motor ensure the accuracy and stability of the clamping position of the clamping fixture on the thin-walled component, and avoid the processing error caused by position deviation. (5) The stepper motor can drive the output shaft to rotate, and the gear one on the output shaft will rotate accordingly. Since gear one and gear two are meshed, gear two will also rotate. The rotation of gear two drives the rotation of the adjustment plate. The rotation of the adjustment plate realizes the conversion of the clamping mechanism, so that the clamping fixture can quickly switch the clamping mode according to different processing requirements, which improves the flexibility and applicability of the fixture. The electric push pump in the clamping mechanism can drive the flexible clamping claw to open and close, thereby realizing the clamping and release of thin-walled components. The design of the flexible clamping claw effectively avoids the problem of workpiece deformation caused by excessive clamping force. The cooperation of the positioning rod and the positioning seat ensures the stability and accuracy of the clamping mechanism in the conversion process, further improving the processing accuracy. (6) The set pallet can provide a stable support surface for thin-walled components. The telescopic rod set on the inner side of the pallet can be adjusted according to the size of the thin-walled components to ensure the stability and adaptability of the support. The hydraulic pump on the outer surface of the telescopic rod provides a power source for the telescopic rod. By controlling the output pressure of the hydraulic pump, the telescopic rod extension can be precisely controlled, thereby further adjusting the height of the pallet to adapt to thin-walled components of different sizes, enhancing the flexibility and practicality of the tooling. The synergistic effect of components such as the pallet, telescopic rod and hydraulic pump not only improves the support stability of the clamping tooling for thin-walled components, but also ensures the accuracy and efficiency in the processing process, providing more reliable clamping and support performance for CNC machining of thin-walled components. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the mounting base of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the connecting plate of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the support plate of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the sliding block of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the pallet of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the flexible gripper of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the bracket of the present invention; Figure 9 This is a schematic diagram of the cross-sectional structure of the adjusting disc of the present invention; Figure 10 This is a schematic diagram of the two-dimensional structure of the gear of the present invention.

[0020] In the diagram: 1. Mounting base; 2. Guide rail; 3. Servo motor; 4. Lead screw; 5. Sliding block; 6. Support plate; 7. Movable block; 8. Positioning block; 9. Stepper motor; 10. Output shaft; 11. Gear 1; 12. Gear 2; 13. Adjusting plate; 14. Connecting plate; 15. Fixed base; 16. Electric push pump; 17. Positioning base; 18. Flexible clamping claw; 19. Positioning rod; 20. Support plate; 21. Telescopic rod; 22. Hydraulic pump; 23. Bracket; 24. Limiting block; 25. Buffer spring; 26. Rigid clamping plate; 27. Moving block; 28. Guide seat. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figure 1 - Figure 2 The present invention provides the following technical solution: a thin-walled component clamping fixture, including a mounting base 1, a guide rail 2 provided on the outer surface of the mounting base 1, a servo motor 3 provided at the top of the mounting base 1, a lead screw 4 provided at the output end of the servo motor 3, a sliding block 5 provided on the outer surface of the lead screw 4, and a positioning block 8 provided at the end of the lead screw 4 away from the servo motor 3; a support plate 6 provided on the outer surface of the sliding block 5, a movable block 7 provided on the outer surface of the support plate 6, and a guide rail 2 provided on the inner side of the movable block 7; an adjusting plate 13 provided at the end of the support plate 6 away from the movable block 7, a connecting plate 14 provided on the outer surface of the adjusting plate 13, and a clamping mechanism for preventing deformation provided on the outer surface of the connecting plate 14.

[0023] The clamping mechanism effectively prevents deformation of thin-walled components during clamping, ensuring the dimensional accuracy and shape of the workpiece. The design of the clamping mechanism fully considers the weak rigidity of thin-walled components, employing a combination of flexible clamping claws 18 and rigid clamping plates 26. This ensures clamping stability while reducing pressure on the components, thus preventing deformation. The servo motor 3 and lead screw 4 transmission mechanism enable precise positioning and rapid clamping of thin-walled components, significantly improving processing efficiency and accuracy. The stepper motor 9 and gear transmission allow for flexible switching of the clamping mechanism according to processing requirements, further enhancing the applicability and flexibility of the tooling. The servo motor 3 drives the lead screw 4 to rotate, causing the sliding block 5 to move along the outer surface of the lead screw 4. The movement of the sliding block 5 drives the support plate 6 to move, which in turn drives the movable block 7 to move along the outer surface of the guide rail 2. This allows for horizontal position adjustment of the clamping mechanism, increasing the flexibility of the clamping tooling.

[0024] Example 2: Based on Example 1, please refer to... Figure 2 - Figure 7 The paper also discloses an adjustment disk 13, the specific structure of which is as follows: a stepper motor 9 is provided on the outer surface of the support plate 6, an output shaft 10 is provided at the output end of the stepper motor 9, a gear 11 is provided on the outer surface of the output shaft 10, the gear 11 and the gear 2 12 are meshed and connected, an adjustment disk 13 is provided on the outer surface of the gear 2 12, the adjustment disk 13 is used to switch the clamping mechanism, the clamping mechanism includes a fixed base 15, a connecting plate 14 is provided on the outer surface of the fixed base 15, an electric push pump 16 is provided at the end of the fixed base 15 away from the connecting plate 14, a flexible clamping claw 18 is provided on the outer surface of the electric push pump 16, two sets of symmetrical positioning rods 19 are provided on the outer surface of the fixed base 15, a positioning seat 17 is provided on the outer surface of the positioning rods 19, and a flexible clamping claw 18 is provided on the outer surface of the positioning seat 17.

[0025] By using the set stepper motor 9, by Figure 9It can be seen that the output shaft 10 can be driven to rotate, the rotation of the output shaft 10 can drive the gear 11 to rotate, the rotation of the gear 11 can drive the gear 12 meshing with it to rotate, the rotation of the gear 12 can drive the adjusting plate 13 to rotate, and the rotation of the adjusting plate 13 can drive the connecting plate 14 and the clamping mechanism connected to the outer surface of the connecting plate 14 to rotate, thereby realizing the conversion and adjustment of the clamping mechanism, further increasing the flexibility of the clamping fixture. The clamping mechanism includes a fixed seat 15, the outer surface of the fixed seat 15 is provided with the connecting plate 14, the end of the fixed seat 15 away from the connecting plate 14 is provided with an electric push pump 16, and the outer surface of the electric push pump 16 is provided with a flexible clamping claw 18. The design of the flexible clamping claw 18 can avoid damage to the thin-walled component during the clamping process, ensuring the integrity of the workpiece. At the same time, the extension and retraction control of the flexible clamping claw 18 can be realized by the push of the electric push pump 16, thereby realizing the clamping and releasing operation of the thin-walled component, which greatly improves the processing efficiency and processing accuracy.

[0026] Example 3: Based on Example 1, please refer to... Figure 3 - Figure 10 The paper also discloses a rigid clamping plate 26, the specific structure of which is as follows: it also includes a support plate 20, a connecting plate 14 is provided on the outer surface of the support plate 20, a telescopic rod 21 is provided on the inner side of the support plate 20, a hydraulic pump 22 is provided on the outer surface of the telescopic rod 21, a rigid clamping plate 26 is provided at the end of the telescopic rod 21 away from the hydraulic pump 22, a bracket 23 is provided on the outer surface of the telescopic rod 21, a groove is provided on the inner side of the bracket 23, a limit block 24 is provided at the groove of the bracket 23, a buffer spring 25 is provided on the outer surface of the limit block 24, two sets of buffer springs 25 are provided, the two sets of buffer springs 25 are symmetrically designed, and a rigid clamping plate 26 is provided on the outer surface of the buffer springs 25, a moving block 27 is provided on the bottom surface of the bracket 23, a guide seat 28 is provided on the inner side of the moving block 27, and a support plate 20 is provided on the bottom surface of the guide seat 28.

[0027] Through the hydraulic pump 22, by Figure 8It is understood that the telescopic rod 21 can extend and retract, and the extension and retraction of the telescopic rod 21 can drive the rigid clamping plate 26 to move. The movement of the rigid clamping plate 26 can clamp and fix the thin-walled component. The buffer spring 25 can play a buffering role during the clamping process, avoiding excessive pressure on the thin-walled component by the rigid clamping plate 26, thereby preventing deformation of the thin-walled component and ensuring the processing quality of the workpiece. At the same time, the buffer spring 25 can also increase the stability of the clamping, making the clamping more secure. The bracket 23 and the limiting block 24 can further enhance the clamping stability. The telescopic rod 21 serves as a limit and guide, ensuring its stability during extension and retraction, and further improving the clamping accuracy and stability. The movable block 27 and guide seat 28 allow for the movement and adjustment of the pallet 20 and the clamping mechanism connected to it, enabling vertical position adjustment and increasing the flexibility of the clamping fixture. The bracket 23 and movable block 27 facilitate fine-tuning of the rigid clamping plate 26 to accommodate thin-walled components of different sizes, improving clamping flexibility and applicability. Simultaneously, the guide seat 28 ensures the stability of the pallet 20 during movement, preventing wobbling and further enhancing clamping accuracy and safety. The buffer spring 25 cushions the pressure generated by the rigid clamping plate 26 during clamping, reducing pressure on the thin-walled component, preventing deformation, and ensuring the workpiece's dimensional accuracy and shape. The combined use of the hydraulic pump 22 and the telescopic rod 21 enables rapid clamping and releasing of the rigid clamping plate 26, further improving processing efficiency.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A clamping fixture for thin-walled components, comprising a mounting base (1), wherein a guide rail (2) is provided on the outer surface of the mounting base (1), characterized in that: The top of the mounting base (1) is provided with a servo motor (3), the output end of the servo motor (3) is provided with a lead screw (4), the outer surface of the lead screw (4) is provided with a sliding block (5), and the end of the lead screw (4) away from the servo motor (3) is provided with a positioning block (8). The outer surface of the sliding block (5) is provided with a support plate (6), the outer surface of the support plate (6) is provided with a movable block (7), and the inner side of the movable block (7) is provided with a guide rail (2). An adjustment plate (13) is provided at one end of the support plate (6) away from the movable block (7). A connecting plate (14) is provided on the outer surface of the adjustment plate (13). A clamping mechanism to prevent deformation is provided on the outer surface of the connecting plate (14).

2. The thin-walled component clamping fixture according to claim 1, characterized in that: A stepper motor (9) is provided on the outer surface of the support plate (6), and an output shaft (10) is provided at the output end of the stepper motor (9). A gear (11) is provided on the outer surface of the output shaft (10).

3. The thin-walled component clamping fixture according to claim 2, characterized in that: The gear one (11) and gear two (12) are meshed together. The outer surface of the gear two (12) is provided with an adjustment disk (13), which is used to switch the clamping mechanism.

4. The thin-walled component clamping fixture according to claim 1, characterized in that: The clamping mechanism includes a fixed base (15), a connecting plate (14) is provided on the outer surface of the fixed base (15), an electric push pump (16) is provided at one end of the fixed base (15) away from the connecting plate (14), and a flexible clamping claw (18) is provided on the outer surface of the electric push pump (16).

5. A thin-walled component clamping fixture according to claim 4, characterized in that: The outer surface of the fixed base (15) is provided with two sets of symmetrical positioning rods (19), the outer surface of the positioning rods (19) is provided with positioning seats (17), and the outer surface of the positioning seats (17) is provided with flexible clamping claws (18).

6. The thin-walled component clamping fixture according to claim 1, characterized in that: It also includes a tray (20), the outer surface of which is provided with a connecting plate (14), and the inner side of which is provided with a telescopic rod (21).

7. A thin-walled component clamping fixture according to claim 6, characterized in that: A hydraulic pump (22) is provided on the outer surface of the telescopic rod (21), and a rigid clamping plate (26) is provided at the end of the telescopic rod (21) away from the hydraulic pump (22).

8. A thin-walled component clamping fixture according to claim 7, characterized in that: The outer surface of the telescopic rod (21) is provided with a bracket (23), the inner side of the bracket (23) is provided with a groove, and a limit block (24) is provided at the groove of the bracket (23).

9. A thin-walled component clamping fixture according to claim 8, characterized in that: The outer surface of the limiting block (24) is provided with a buffer spring (25), and there are two sets of buffer springs (25). The two sets of buffer springs (25) are symmetrically designed, and the outer surface of the buffer springs (25) is provided with a rigid clamping plate (26).

10. A thin-walled component clamping fixture according to claim 8, characterized in that: The bottom surface of the bracket (23) is provided with a movable block (27), the inner side of the movable block (27) is provided with a guide seat (28), and the bottom surface of the guide seat (28) is provided with a support plate (20).

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