Adaptive clamping device for processing special-shaped section of aluminum profile

Abstract

The application relates to the technical field of aluminum profile machining clamping, and discloses an aluminum profile special-shaped section machining self-adaptive clamping device, which comprises a fixing base, a positioning frame is fixedly connected to the fixing base, an upper end clamping assembly is arranged above the positioning frame, side edge clamping assemblies are arranged on the two sides of the positioning frame, the right-angle plate on the positioning frame can preliminarily position the aluminum profile with an internal right angle, then the upper end clamping assembly is moved downwards to clamp, the side edge clamping assemblies on the two sides are driven to be inserted into the grooves on the two sides of the aluminum profile, the special-shaped aluminum profile can be limited in multiple ways to prevent deviation and rotation during machining, the clamping and positioning precision is improved, the special-shaped section aluminum profile with the groove structure can be matched, the clamping process is synchronous linkage, the operation is convenient, the feeding and discharging efficiency is improved, and the U-shaped blocking frame in the positioning frame can block and position one end of the aluminum profile, so that the clamping precision is improved.

Description

Technical Field

[0001] This invention relates to the field of aluminum profile processing and clamping technology, specifically to an adaptive clamping device for processing irregular cross-sections of aluminum profiles. Background Technology

[0002] The processing of irregular cross-section aluminum profiles relies on the core extrusion molding process, combined with secondary machining methods such as CNC sawing, milling, drilling, bending, and finishing. Non-standard and irregular cross-sectional contours can be customized according to usage requirements, achieving lightweight and integrated molding, effectively reducing splicing welds of parts, and is widely used in new energy, rail transportation, industrial equipment, and building curtain walls. The processing requires precise control of the extrusion die structure, metal flow rate, cooling parameters, and subsequent cutting tolerances to overcome the difficulties of uneven wall thickness, large deformation, and difficulty in controlling dimensional accuracy of irregular cross-sections, ensuring that the profile cross-section shape, form and position tolerances, and surface quality meet the requirements for assembly and use.

[0003] The applicant found through a search that a Chinese patent discloses "A clamping device for cutting irregularly shaped aluminum plates", with the publication number "CN222243612U". This patent uses a sliding rod that slides in a groove, and has two sliding sleeves, each with a clamping mechanism on its inner side. This allows for clamping both sides of a large aluminum plate, preventing wobbling when clamping a large aluminum plate. By flexibly adjusting the sliding sleeves, the clamping effect of the aluminum plate can be improved, thereby increasing work efficiency.

[0004] When in use, this patent enables the clamping and positioning of aluminum plates, and is suitable for regular flat aluminum plates. However, when dealing with aluminum profiles with irregular cross-sections, curved surfaces, and concave and convex structures, the clamping end face cannot fully fit the irregular contour, resulting in insufficient effective contact area, uneven clamping force, and easy slippage and deflection of the workpiece during the cutting process, as well as poor positioning stability. Therefore, those skilled in the art provide an adaptive clamping device for processing irregular cross-sections of aluminum profiles to solve the problems mentioned in the background art. Summary of the Invention

[0005] The purpose of this invention is to provide an adaptive clamping device for processing irregular cross-sections of aluminum profiles, thereby solving the problems mentioned in the background section of the prior art.

[0006] The present invention provides the following technical solution: an adaptive clamping device for processing irregular cross sections of aluminum profiles, including a fixed base, a positioning frame fixedly connected to the fixed base, an upper clamping component arranged above the positioning frame, and side clamping components arranged on both sides of the positioning frame.

[0007] As a preferred embodiment of the above technical solution, a right-angle plate is fixedly connected to the top of the positioning frame, an aluminum profile is placed on the right-angle plate, a guide groove is provided on the inner wall of the positioning frame, and an inclined surface is provided at the bottom end of the guide groove near the end of the positioning frame.

[0008] As a preferred embodiment of the above technical solution, a threaded rod is rotatably connected through the guide groove, and a movable frame is threadedly connected to the outer wall of the threaded rod. A U-shaped stop with an upward opening is slidably fitted through the movable frame.

[0009] As a preferred embodiment of the above technical solution, a spring is fixedly connected between the bottom end of the U-shaped baffle and the movable frame, and the bottom end of the U-shaped baffle is slidably fitted with the inner wall of the bottom end of the guide groove.

[0010] As a preferred embodiment of the above technical solution, the upper clamping assembly includes an arc-shaped clamping plate. The lower surface of the arc-shaped clamping plate is adapted to the arc-shaped surface of the aluminum profile. The top of the arc-shaped clamping plate is symmetrically and slidably fitted with two mounting blocks. One side of the bottom end of the mounting block is slidably fitted through the inner wall of the top of the arc-shaped clamping plate. A tension spring is fixedly connected between the other side of the bottom end of the mounting block and the inner wall of the top of the arc-shaped clamping plate.

[0011] As a preferred embodiment of the above technical solution, an electric push rod is provided at the top of the arc-shaped clamping plate. The electric push rod is fixedly connected to the top of the fixed base. A snap-fit ​​seat is fixedly connected to the bottom of the electric push rod. The bottom of the snap-fit ​​seat has two snap-fit ​​grooves with a symmetrical structure. The inner wall of the snap-fit ​​groove is movably snap-fitted to the top of the mounting block. A transmission rack is fixedly connected to both sides of the snap-fit ​​seat.

[0012] As a preferred embodiment of the above technical solution, the side clamping assembly includes a side positioning plate, which is arranged in an inclined structure and is adapted to the side groove of the aluminum profile. The inner side of the side positioning plate is symmetrically connected to two connecting rod groups, the other end of which is rotatably connected to a fixed base. A worm gear is fixedly connected to one end of the connecting rod group connected to the fixed base.

[0013] As a preferred embodiment of the above technical solution, a worm is provided for meshing and transmission between the two worm gears. The worm is rotatably connected to the inner wall of the fixed seat. A universal joint is fixedly connected to the bottom end of the worm. The universal joint is rotatably connected to the inner wall of the fixed seat. A gear is fixedly connected to the other end of the universal joint. The gear meshes and transmits power with a transmission rack.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] This invention, by setting up a positioning frame, an upper clamping component, and a side clamping component, allows the right-angle plate on the positioning frame to initially position aluminum profiles with internal right angles. Then, as the upper clamping component moves down to clamp, it can drive the side clamping components on both sides to insert into the grooves on both sides of the aluminum profile. Multiple limiting constraints can be used to constrain the offset and rotation of irregular aluminum profiles during processing, improving the clamping and positioning accuracy. It can adapt to irregular cross-section aluminum profiles with groove structures. The clamping process is synchronous and linked, and the operation is convenient, improving the loading and unloading efficiency. At the same time, the U-shaped stop in the positioning frame can block and position one end of the aluminum profile, improving the clamping accuracy. Attached Figure Description

[0016] Figure 1 A schematic diagram of one side of the overall structure of the adaptive clamping device for machining irregular cross-sections of aluminum profiles;

[0017] Figure 2 A schematic diagram of the other side of the overall structure of the adaptive clamping device for machining irregular cross sections of aluminum profiles;

[0018] Figure 3 A partial sectional view of the positioning frame structure for an adaptive clamping device used in machining irregular cross-sections of aluminum profiles;

[0019] Figure 4 A schematic diagram of the side clamping assembly structure of an adaptive clamping device for machining irregular cross-sections of aluminum profiles;

[0020] Figure 5 A schematic diagram of the upper clamping component structure of the adaptive clamping device for machining irregular cross-sections of aluminum profiles.

[0021] In the diagram: 1. Fixed base; 2. Positioning frame; 3. Upper clamping assembly; 4. Side clamping assembly; 201. Right-angle plate; 202. Guide groove; 203. Threaded rod; 204. Moving frame; 205. U-shaped stop; 206. Spring; 301. Arc-shaped clamping plate; 302. Electric actuator; 303. Transmission rack; 304. Mounting block; 305. Tension spring; 306. Snap-fit ​​seat; 401. Side positioning plate; 402. Linkage assembly; 403. Worm gear; 404. Worm; 405. Universal joint; 406. Gear. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0023] Please see Figures 1-5 As shown, the present invention provides a technical solution: an adaptive clamping device for processing irregular cross sections of aluminum profiles, including a fixed base 1, a positioning frame 2 fixedly connected to the fixed base 1, an upper clamping component 3 arranged above the positioning frame 2, and side clamping components 4 arranged on both sides of the positioning frame 2.

[0024] By setting up a positioning frame 2, an upper clamping component 3, and a side clamping component 4, the right-angle plate 201 on the positioning frame 2 can initially position the aluminum profile with an inner right angle. Then, while the upper clamping component 3 moves down to clamp, it can drive the side clamping components 4 on both sides to insert into the grooves on both sides of the aluminum profile. Multiple limit constraints can be used to constrain the offset and rotation of the irregular aluminum profile during processing, improve the clamping and positioning accuracy, and adapt to irregular cross-section aluminum profiles with groove structures. The clamping process is synchronized and convenient to operate, improving the loading and unloading efficiency.

[0025] As one implementation method in this embodiment, please refer to Figure 3 As shown, a right-angle plate 201 is fixedly connected to the top of the positioning frame 2, and an aluminum profile is placed on the right-angle plate 201. A guide groove 202 is provided on the inner wall of the positioning frame 2, and an inclined surface is provided at the bottom end of the guide groove 202 near the end of the positioning frame 2.

[0026] The right-angle plate 201 adopts a standard right-angle positioning structure, which can accurately fit the inner right-angle end face of irregular aluminum profiles, realize the initial positioning of the workpiece quickly, limit the horizontal lateral displacement of the profile, and provide a constant reference for subsequent precise clamping.

[0027] The inclined surface enables the U-shaped baffle 205 to automatically move down and retract under the action of the spring 206 when not in use, and at the same time, it can be lifted up when in use to block and limit one end of the aluminum profile, so as to achieve clamping of aluminum profiles of different lengths.

[0028] As one implementation method in this embodiment, please refer to Figure 3 As shown, a threaded rod 203 is rotatably connected through the guide groove 202, and a movable frame 204 is threadedly connected to the outer wall of the threaded rod 203. A U-shaped stop 205 with an upward opening is slidably fitted through the movable frame 204.

[0029] The threaded rod 203 is an end limit position adjustment structure. The sliding position of the moving frame 204 can be precisely controlled by the threaded transmission, so as to achieve precise adjustment of the end limit stroke.

[0030] As one implementation method in this embodiment, please refer to Figure 3 As shown, a spring 206 is fixedly connected between the bottom end of the U-shaped baffle 205 and the movable frame 204, and the bottom end of the U-shaped baffle 205 is slidably engaged with the inner wall of the bottom end of the guide groove 202.

[0031] As one implementation method in this embodiment, please refer to Figure 5As shown, the upper clamping component 3 includes an arc-shaped clamping plate 301. The lower surface of the arc-shaped clamping plate 301 is adapted to the arc-shaped surface of the aluminum profile. The top of the arc-shaped clamping plate 301 has two mounting blocks 304 that are symmetrically arranged and slidably fitted. The pressing end of one side of the bottom of the mounting block 304 is slidably fitted through the inner wall of the top of the arc-shaped clamping plate 301. A tension spring 305 is fixedly connected between the other side of the bottom of the mounting block 304 and the inner wall of the top of the arc-shaped clamping plate 301.

[0032] The mounting block 304 enables quick replacement of different models of curved clamps 301.

[0033] As one implementation method in this embodiment, please refer to Figure 5 As shown, an electric actuator 302 is provided at the top of the arc-shaped clamping plate 301. The electric actuator 302 is fixedly connected to the top of the fixed base 1. A snap-fit ​​seat 306 is fixedly connected to the bottom of the electric actuator 302. The bottom of the snap-fit ​​seat 306 has two snap-fit ​​grooves with a symmetrical structure. The inner wall of the snap-fit ​​groove is movably snap-fitted to the top of the mounting block 304. A transmission rack 303 is fixedly connected to both sides of the snap-fit ​​seat 306.

[0034] The transmission racks 303, symmetrically arranged on both sides, are linkage power output components. They can move vertically and synchronously with the arc-shaped clamping plate 301 to provide meshing transmission power for the side clamping assembly 4, realizing synchronous linkage between upper and lower clamping and side positioning.

[0035] As one implementation method in this embodiment, please refer to Figure 4 As shown, the side clamping assembly 4 includes a side positioning plate 401. The side positioning plate 401 is set with an inclined structure and is adapted to the side groove of the aluminum profile. The inner side of the side positioning plate 401 has two connecting rod groups 402 rotatably connected in a symmetrical structure. The other end of the connecting rod group 402 is rotatably connected to the fixed base 1. A worm gear 403 is fixedly connected to the end of the connecting rod group 402 connected to the fixed base 1.

[0036] As one implementation method in this embodiment, please refer to Figure 4 As shown, a worm 404 is provided for meshing transmission between the two worm gears 403. The worm 404 is rotatably connected to the inner wall of the fixed base 1. A universal joint 405 is fixedly connected to the bottom end of the worm 404. The universal joint 405 is rotatably connected to the inner wall of the fixed base 1. A gear 406 is fixedly connected to the other end of the universal joint 405. The gear 406 meshes with the transmission rack 303 for transmission.

[0037] Working principle: Before clamping, the operator selects the corresponding arc-shaped clamping plate 301 according to the angle dimension of the arc surface of the irregular aluminum profile to be processed, aligns the mounting block 304 at the upper end of the arc-shaped clamping plate 301 with the snap-fit ​​groove at the bottom end of the snap-fit ​​seat 306 and inserts it. Under the action of the tension spring 305, the mounting block 304 is moved to snap-fit ​​with the snap-fit ​​groove. Then, according to the actual length of the irregular aluminum profile to be processed, the operator rotates the threaded rod 203, driving the moving frame 204 to slide along the guide slide 202, adjusting the U-shaped... The horizontal position of the stop 205 is adapted to the end limiting requirements of profiles of different lengths. During the sliding process, the U-shaped stop 205 can automatically switch between lifting and lowering by relying on the cooperation of the bottom inclined surface of the guide groove 202 and the spring 206. When processing short profiles, the U-shaped stop 205 moves from the inclined surface position to the horizontal position and automatically lifts up to achieve end blocking and limiting. When processing long profiles, the U-shaped stop 205 slides to the inclined surface area of ​​the groove and automatically falls back and is stored under the action of the spring 206 without structural interference, completing the pre-adaptive adjustment preparation.

[0038] The aluminum profile with irregular cross-section to be processed is then placed on the top of the positioning frame 2, so that the inner right angle of the aluminum profile fits into the right angle plate 201 to complete the rapid initial positioning. The right angle plate 201 restricts the lateral displacement of the profile, and at the same time, the U-shaped stop 205 with the position adjusted completes the axial limit of the profile, realizing the all-round pre-positioning of the profile and ensuring the uniformity of the workpiece clamping reference.

[0039] After the pre-positioning is completed, the electric actuator 302 is activated to drive the arc-shaped clamping plate 301 to move vertically downward. The arc-shaped clamping plate 301 relies on its own contoured arc surface structure to fit the arc-shaped outer wall of the irregular aluminum profile, achieving uniform vertical clamping. The surface contact clamping method can effectively protect the arc surface structure of the irregular profile, avoid local pressure damage and deformation, and at the same time ensure stable vertical clamping.

[0040] During the synchronous process of the arc-shaped clamping plate 301 moving down to clamp, the transmission racks 303 on both sides of the top end move down synchronously with the arc-shaped clamping plate 301, meshing with the drive gear 406 to rotate. The power is stably transmitted to the worm gear 404 through the universal joint 405. The worm gear 404 synchronously meshes with and drives the worm wheels 403 on both sides to rotate symmetrically, thereby driving the double-sided connecting rod group 402 to extend and retract synchronously, driving the side positioning plates 401 on both sides to extend inward synchronously and accurately insert into the preset grooves on both sides of the aluminum profile.

[0041] By precisely positioning the side positioning plate 401 with the profile groove, combined with the vertical pressing of the upper arc-shaped clamping plate 301, the reference positioning of the right-angle plate 201, and the end limiting of the U-shaped stop 205, a multi-directional limiting constraint structure is formed, which greatly improves the processing and clamping accuracy and stability of irregular profiles.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. An adaptive clamping device for machining irregular cross-sections of aluminum profiles, characterized in that: It includes a fixed base (1), a positioning frame (2) is fixedly connected to the fixed base (1), an upper clamping component (3) is provided above the positioning frame (2), and side clamping components (4) are provided on both sides of the positioning frame (2).

2. The adaptive clamping device for processing irregular cross-sections of aluminum profiles according to claim 1, characterized in that: The top of the positioning frame (2) is fixedly connected to a right angle plate (201), and an aluminum profile is placed on the right angle plate (201). The inner wall of the positioning frame (2) is provided with a guide groove (202), and the bottom of the guide groove (202) near the end of the positioning frame (2) is provided with an inclined surface.

3. The adaptive clamping device for processing irregular cross-sections of aluminum profiles according to claim 2, characterized in that: A threaded rod (203) is rotatably connected through the guide groove (202), and a movable frame (204) is threadedly connected to the outer wall of the threaded rod (203). A U-shaped baffle (205) with an upward opening is slidably fitted through the movable frame (204).

4. The adaptive clamping device for processing irregular cross-sections of aluminum profiles according to claim 3, characterized in that: A spring (206) is fixedly connected between the bottom end of the U-shaped baffle (205) and the movable frame (204), and the bottom end of the U-shaped baffle (205) is slidably fitted with the inner wall of the bottom end of the guide groove (202).

5. The adaptive clamping device for machining irregular cross-sections of aluminum profiles according to claim 1, characterized in that: The upper clamping assembly (3) includes an arc-shaped clamping plate (301). The lower surface of the arc-shaped clamping plate (301) is adapted to the arc-shaped surface of the aluminum profile. The top of the arc-shaped clamping plate (301) is symmetrically structured and has two mounting blocks (304) that slide together. The bottom end of the mounting block (304) is pressed and slides through the inner wall of the top of the arc-shaped clamping plate (301). The other bottom end of the mounting block (304) is fixedly connected to the inner wall of the top of the arc-shaped clamping plate (301) with a tension spring (305).

6. The adaptive clamping device for machining irregular cross-sections of aluminum profiles according to claim 5, characterized in that: The top of the arc-shaped clamp (301) is provided with an electric push rod (302), which is fixedly connected to the top of the fixed base (1). The bottom of the electric push rod (302) is fixedly connected with a snap-fit ​​seat (306). The bottom of the snap-fit ​​seat (306) has two snap-fit ​​grooves with a symmetrical structure. The inner wall of the snap-fit ​​groove is movably snap-fitted to the top of the mounting block (304). Both sides of the snap-fit ​​seat (306) are fixedly connected with transmission racks (303).

7. The adaptive clamping device for machining irregular cross-sections of aluminum profiles according to claim 6, characterized in that: The side clamping assembly (4) includes a side positioning plate (401), which is inclined and adapted to the side groove of the aluminum profile. The side positioning plate (401) has two symmetrical connecting rods (402) rotatably connected to the inner side. The other end of the connecting rods (402) is rotatably connected to the fixed seat (1). A worm gear (403) is fixedly connected to the end of the connecting rods (402) connected to the fixed seat (1).

8. The adaptive clamping device for machining irregular cross-sections of aluminum profiles according to claim 7, characterized in that: A worm (404) is provided for meshing and transmission between the two worm gears (403). The worm (404) is rotatably connected to the inner wall of the fixed seat (1). A universal joint (405) is fixedly connected to the bottom end of the worm (404). The universal joint (405) is rotatably connected to the inner wall of the fixed seat (1). A gear (406) is fixedly connected to the other end of the universal joint (405). The gear (406) meshes and transmits power with the transmission rack (303).

Images