A CNC processing tool for aluminum alloy bumper

Abstract

The invention discloses a CNC processing tool for an aluminum alloy profile bumper, comprising a connecting table, wherein two ends of the connecting table are respectively provided with a driven bracket and a driving bracket, a tooling table is rotatably provided between the driven bracket and the driving bracket, and the driving bracket can drive the tooling table to rotate; a plurality of supporting rollers are rotatably provided at the bottom of the tooling table; a plurality of surface clamping assemblies are symmetrically provided at the front and rear surfaces of the tooling table, and the surface clamping assemblies are distributed between the supporting rollers; and side supporting assemblies are symmetrically provided at both ends of the tooling table.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts processing, in particular to a CNC processing tool for an aluminum alloy profile bumper. Background Art

[0002] With the rapid development of the automobile industry, the quality and performance requirements of bumpers, as an important part of the automobile body, are becoming increasingly higher. Bumpers are usually made of aluminum alloy profiles, which are lightweight and high-strength. They can effectively absorb the impact force during a collision and protect the safety of the vehicle and passengers. In particular, aluminum alloy bumpers with curved radians on both sides can greatly improve the safety of the vehicle in a 25% offset collision.

[0003] In order to meet market demand, bumper production and processing technology is also constantly improving. In the production process of bumpers, CNC processing technology is widely used due to its high precision and high efficiency. As an important supporting device of CNC processing equipment, the structure, shape and use scenario of CNC processing tooling have an important impact on the processing quality and efficiency of bumpers.

[0004] At present, there are already some bumper CNC processing tools on the market. They usually use structures such as multi-degree-of-freedom robotic arms, fixtures and support devices to achieve the clamping, positioning and processing of bumpers. However, the structural design of existing tools is relatively complex, and adjustment and maintenance are relatively difficult. The tooling needs to adapt to bumpers of different sizes and shapes, resulting in a complex tooling structure and cumbersome operation, which is not conducive to rapid adjustment and replacement. Secondly, when processing different surfaces of the bumper, the existing tooling usually needs to replace the tooling or adjust the position of the workpiece, which increases processing time and cost.

[0005] For aluminum alloy bumpers with curved radians on both sides, since the curved surface and the surface are in different planes, the CNC equipment with vertical cutting cannot process the curved surface of the bumper. The bumper needs to be re-installed at an angle, and the existing tooling fixtures are difficult to clamp the curved surface, making the curved surface not firmly fixed.

[0006] Therefore, it is of great significance to develop a CNC machining tooling with simple structure, convenient adjustment, high machining accuracy, and suitable for bumpers of different sizes and shapes. By optimizing the structural design of the tooling, improving positioning accuracy, and improving support and clamping methods, the processing quality and efficiency of the bumper can be further improved, production costs can be reduced, and market demand can be met.

[0007] Therefore, it is necessary to provide a CNC processing tool for aluminum alloy profile bumper to solve the problems raised in the above background technology. Summary of the invention

[0008] To achieve the above-mentioned object, the present invention provides the following technical solutions: a CNC processing tool for an aluminum alloy profile bumper, comprising a connecting platform, a driven bracket and a driving bracket are respectively provided at both ends of the connecting platform, a tooling platform is rotatably provided between the driven bracket and the driving bracket, and the driving bracket can drive the tooling platform to rotate; A plurality of supporting rollers are rotatably provided at the bottom of the tooling table; The front and rear sides of the workbench are symmetrically provided with a plurality of surface clamping assemblies, and the surface clamping assemblies are distributed between the supporting rollers; Side support components are symmetrically provided at both ends of the tooling table; The surface clamping assembly includes a slide groove, which is fixed on the inner side of the workbench, a slide rod is slidably provided in the slide groove, a clamping plate is connected to the slide rod, and a clamping block is fixed on one side of the clamping plate close to the axis of the workbench; A surface telescopic cylinder is hinged between the side of the clamping plate away from the clamping block and the slide groove; The clamping plate is rotatably connected to the slide bar, and a baffle perpendicular to the slide bar is fixed on one end of the slide bar close to the axis of the tooling table.

[0009] Furthermore, as a preference, a base is provided below the connecting platform, the center of the connecting platform is hinged to the base, and both sides of the connecting platform are connected to both sides of the connecting platform through supporting hydraulic cylinders.

[0010] Furthermore, as a preference, a spring is also provided between the slide rod and the slide groove, and the spring provides elastic force to retract the slide rod into the slide groove.

[0011] Further, as a preference, a top telescopic cylinder is embedded in the clamping block, a lifting plate is fixed to the top of the piston rod of the top telescopic cylinder, and a pressure block is fixed to the lower part of the lifting plate.

[0012] Furthermore, as a preference, a surface slide rail is provided on the front and rear inner sides of the workbench, a plurality of surface sliders are slidably provided in the surface slide rail, each of the surface sliders is connected to a servo motor, and each of the support rollers is rotatably connected between the surface sliders on both sides.

[0013] Further, as a preference, side slide rails are respectively provided on both inner side surfaces of the workbench, side sliders are slidably provided in the side slide rails, a servo motor is connected to each of the side sliders, and the side support assembly is rotatably connected above the side sliders.

[0014] Further, preferably, the side support assembly comprises an inclined rod, one end of which is rotatably connected to the side slider, and the other end of which is telescopically provided with an extension rod, wherein the extension rod is respectively embedded with a support frame at the top and the bottom.

[0015] Further, as a preference, an annular support ring is fixed inside the extension rod, a push tongue passes through the support ring, two hinged rods are hinged at one end of the push tongue close to the support frame, the hinged rods are respectively hinged to the two support frames, and a push plate is fixed to the other end of the push tongue.

[0016] Further, preferably, a compression spring is provided between the push plate and the support ring.

[0017] Further, as a preference, a side telescopic cylinder is provided in the oblique rod, and a piston rod of the side telescopic cylinder is fixed to the push plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the tooling table can be conveniently rotated and the angle can be adjusted, so that the CNC processing equipment can easily process different surfaces of the bumper without frequently changing the tooling or adjusting the position of the workpiece, which greatly reduces the downtime and operation complexity during the processing, thereby improving production efficiency.

[0019] In the present invention, the bumper is firmly clamped and supported during the processing by the precisely designed surface clamping assembly and side support assembly, effectively avoiding shaking and displacement during processing. At the same time, the left and right movement function of the support roller enables the tool to process the bottom surface of the bumper without hindrance, further ensuring the flatness and accuracy of the processed surface.

[0020] In the present invention, the structural design of the tooling table enables bumpers of different sizes and shapes to be stably clamped and processed, meeting diverse production needs, making the device adaptable to the processing requirements of different CNC processing equipment and improving the utilization rate of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of a CNC processing tool for aluminum alloy bumper; Figure 2 It is a structural schematic diagram of the surface clamping assembly; Figure 3 It is a structural schematic diagram when the tooling table is in a vertical state; Figure 4 It is a structural schematic diagram when the tooling table is in a bottom-up state; Figure 5 It is a schematic diagram of a half-section structure of a side support assembly; In the figure: 1. connecting table; 2. driven bracket; 3. driving bracket; 4. tooling table; 41. surface slide rail; 42. surface slider; 43. side slide rail; 44. side slider; 5. supporting roller; 6. surface clamping assembly; 61. slide groove; 62. slide rod; 63. clamping plate; 64. clamping block; 65. surface telescopic cylinder; 66. baffle; 71. top telescopic cylinder; 72. lifting plate; 73. pressing block; 8. side support assembly; 81. oblique rod; 82. extension rod; 83. support frame; 84. hinged rod; 85. push tongue; 86. support ring; 87. push plate; 88. compression spring; 89. side telescopic cylinder; 9. base; 91. supporting hydraulic cylinder. DETAILED DESCRIPTION

[0022] See also Figure 1 In an embodiment of the present invention, a CNC processing tool for an aluminum alloy profile bumper includes a connecting platform 1, a driven bracket 2 and a driving bracket 3 are respectively provided at both ends of the connecting platform 1, a tooling platform 4 is rotatably provided between the driven bracket 2 and the driving bracket 3, and the driving bracket 3 can drive the tooling platform 4 to rotate; A plurality of supporting rollers 5 are rotatably provided at the bottom of the tooling table 4; The front and rear sides of the tooling table 4 are symmetrically provided with a plurality of surface clamping assemblies 6, and the surface clamping assemblies 6 are distributed between the support rollers 5; Side support components 8 are symmetrically provided at both ends of the tooling table 4 .

[0023] The bumper is placed above the support roller 5. The front and rear faces of the bumper can be clamped at the center of the tooling table 4 through the surface clamping assembly 6. The two ends of the bumper can be fixed through the side support assembly 8 to avoid shaking during processing. By driving the tooling table 4 to rotate, different faces of the bumper can be processed by CNC.

[0024] In this embodiment, a base 9 is provided below the connecting platform 1, the center of the connecting platform 1 is hinged to the base 9, and both sides of the connecting platform 1 are connected to both sides of the connecting platform 1 through supporting hydraulic cylinders 91. By adjusting the extension and contraction of the supporting hydraulic cylinders 91 on both sides, the connecting platform 1 can be tilted to both sides to ensure that the inclined surface of the bumper can be adjusted to a horizontal plane, so that the CNC can vertically cut the inclined surface of the bumper.

[0025] See also Figure 2 and Figure 3 In this embodiment, the surface clamping assembly 6 includes a slide groove 61, which is fixed to the inner side of the workbench 4. A slide rod 62 is slidably provided in the slide groove 61, and a clamping plate 63 is connected to the slide rod 62. A clamping block 64 is fixed to a side of the clamping plate 63 close to the axis of the workbench 4; A surface telescopic cylinder 65 is hinged between the side of the clamping plate 63 away from the clamping block 64 and the slide slot 61. The clamping plate 63 can be pushed to slide forward and backward by the telescopic cylinder 65, so that the clamping block 64 can fit the front and back of the bumper to clamp the bumper.

[0026] In this embodiment, the clamping plate 63 is rotatably connected to the slide bar 62 , and a baffle 66 perpendicular to the slide bar 62 is fixed to one end of the slide bar 62 close to the axis of the tooling table 4 .

[0027] In this embodiment, a spring is further disposed between the slide bar 62 and the slide slot 61 , and the spring provides elastic force to retract the slide bar 62 into the slide slot 61 .

[0028] That is to say, when the surface telescopic cylinder 65 is in the shortest state, the slide rod 62 is retracted into the slide groove 61, and the clamping plate 63 is folded to a horizontal state. At this time, the surface clamping assembly 6 as a whole leaves the projection surface where the bumper is located, thereby avoiding the processing space. When the tooling table 4 is rotated to a vertical position, the CNC can vertically cut the front and back surfaces of the bumper; When the telescopic cylinder 65 is extended from the shortest state, since the slide rod 62 is pulled by the spring, the clamp 63 rotates upward to fit with the baffle 66 to achieve a vertical state. Due to the limiting effect of the baffle 66, the clamp 63 cannot continue to rotate. When the telescopic rod 65 continues to extend, the slide rod 62 overcomes the tension of the spring and extends until the clamp block 64 fits with the bumper, thereby ensuring that the clamp block 64 fits tightly with the bumper in the vertical state.

[0029] In this embodiment, a top telescopic cylinder 71 is embedded in the clamp block 64, a lifting plate 72 is fixed to the top of the piston rod of the top telescopic cylinder 71, and a pressing block 73 is fixed to the lower part of the lifting plate 72. When the clamp block 64 is attached to the front and rear faces of the bumper, the pressing block 73 can press down the bumper by lowering the top telescopic cylinder 71.

[0030] See also Figure 4 In this embodiment, the front and rear sides of the tooling table 4 are each provided with a surface slide rail 41, and a plurality of surface sliders 42 are slidably provided in the surface slide rail 41. A servo motor is connected to each of the surface sliders 42, and each of the support rollers 5 is rotatably connected between the surface sliders 42 on both sides. The surface sliders 42 connected thereto can be driven by the corresponding servo motor to move the support rollers 5. When the tooling table 4 is rotated to the bottom facing downward, the support rollers 5 can be displaced with the CNC tool, thereby avoiding the processing space.

[0031] In this embodiment, side slide rails 43 are provided on both inner side surfaces of the workbench 4, and side sliders 44 are slidably provided in the side slide rails 43. Each side slider 44 is connected to a servo motor, and the side support assembly 8 is rotatably connected above the side slider 44.

[0032] See also Figure 5 In this embodiment, the side support assembly 8 includes an inclined rod 81, one end of which is rotatably connected to the side slider 44, and the other end of the inclined rod 81 is telescopically provided with an extension rod 82, and the extension rod 82 is embedded with a support frame 83 above and below.

[0033] In this embodiment, an annular support ring 86 is fixed inside the extension rod 82, and a push tongue 85 runs through the support ring 86. One end of the push tongue 85 close to the support frame 83 is hinged with two hinged rods 84, and the hinged rods 84 are respectively hinged to the two support frames 83. A push plate 87 is fixed to the other end of the push tongue 85, and a compression spring 88 is provided between the push plate 87 and the support ring 86. A side telescopic cylinder 89 is disposed inside the oblique rod 81 , and a piston rod of the side telescopic cylinder 89 is fixed to the push plate 87 .

[0034] In the initial state, the extension rod 82 is retracted into the inclined rod 81, and the corresponding servo motor drives the side slider 44 to align the inclined rod 81 with the hole on the end face of the bumper. At this time, the push plate 87 is pushed by the extended side telescopic cylinder 89. Under the action of the compression spring 88, the distance between the push plate 87 and the support ring 86 remains basically unchanged. The thrust of the side telescopic cylinder 89 pushes the extension rod 82 to extend out of the inclined rod 81 and insert it into the hole on the end face of the bumper. When the extension rod 82 is extended to the longest, the side telescopic cylinder 89 continues to extend. At this time, the push plate 87 squeezes the compression spring 88 close to the support ring 86, so that the push tongue 85 pushes the hinged rod 84 to open, and makes the support frame 83 extend from the upper and lower sides of the extension rod 82, thereby supporting the inner wall of the bumper, thereby supporting both ends of the bumper.

[0035] When it comes to specific implementation, Place the bumper on the support roller 5 of the tooling table 4, and ensure that the bumper is placed stably and in good contact with the support roller 5; By adjusting the extension and contraction of the surface extension cylinder 65, the clamping plate 63 slides forward and backward until the clamping block 64 fits the front and rear surfaces of the bumper; When the clamping block 64 is attached to the bumper, the top telescopic cylinder 71 is started to make the pressing block 73 press down the bumper to ensure that the bumper is firmly clamped; The servo motor is used to drive the side slider 44 to move, so that the inclined rod 81 is aligned with the hole on the end face of the bumper, and the side telescopic cylinder 89 is extended to push the extension rod 82 to extend out of the inclined rod 81 and insert it into the hole on the end face of the bumper. When the extension rod 82 is extended to the longest, the side telescopic cylinder 89 is further extended to extend the support frame 83 to support the inner wall of the bumper, thereby completing the support of both ends of the bumper; According to the processing requirements, by adjusting the extension and contraction of the supporting hydraulic cylinder 91, the connecting platform 1 is tilted to both sides, so as to adjust the inclined surface of the bumper to a horizontal surface, so as to facilitate CNC processing; According to the processing requirements, by driving the tooling table 4 to rotate, the CNC processing equipment can process different surfaces of the bumper, including: Working condition A: When the tooling table 4 is rotated to a horizontal position and the bumper is facing upward, CNC processes the upper surface of the bumper ( Figure 1 State), when the processing surface is blocked by the pressing block 73, the pressing block 73 is moved away from the upper surface of the bumper by raising the corresponding top telescopic cylinder 71, and the corresponding surface telescopic cylinder 65 is retracted to make the lifting plate 72 and the pressing block 73 move away from the projection position of the upper surface of the bumper, so that the tool can process the upper surface of the bumper without being blocked, and the pressing block 73 continues to press the bumper after the processing is completed; Working condition B: When the tooling table 4 is rotated to a vertical position so that the front or rear of the bumper faces upward, the front or rear of the bumper is processed by CNC ( Figure 3 State), when the processing surface is blocked by the clamping block 64, the same steps as in working condition A are performed to enable the clamping plate 63 and the clamping block 64 to leave the projection position in front of or behind the bumper, so that the tool can process the front or back of the bumper without being blocked. After the processing is completed, the clamping block 64 continues to clamp the bumper; Working condition C: When the tooling table 4 is horizontal and the bottom surface of the bumper faces upward, CNC processes the bottom surface of the bumper ( Figure 4 State), when the processing surface is blocked by the support roller 5, the corresponding surface slider 42 is driven by the corresponding servo motor to make the support roller 5 move left and right and leave the processing surface. After the processing is completed, the support roller 5 moves back to its original position; After processing is completed, turn off the CNC processing equipment, rotate the tooling table to a horizontal position with the bumper facing up, retract the side telescopic cylinder and the surface telescopic cylinder to release the clamping and support of the bumper, and remove the processed bumper from the tooling table for subsequent processing or inspection.

[0036] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A CNC processing tool for an aluminum alloy profile bumper, comprising a connecting platform (1), characterized in that: A driven bracket (2) and a driving bracket (3) are respectively provided at both ends of the connecting platform (1); a tooling platform (4) is rotatably provided between the driven bracket (2) and the driving bracket (3); and the driving bracket (3) is capable of driving the tooling platform (4) to rotate; A plurality of supporting rollers (5) are rotatably provided at the bottom of the tooling table (4); A plurality of surface clamping assemblies (6) are symmetrically arranged on the front and rear sides of the tooling table (4), and the surface clamping assemblies (6) are distributed between the support rollers (5); Side support assemblies (8) are symmetrically provided at both ends of the tooling table (4); The surface clamping assembly (6) comprises a slide groove (61), the slide groove (61) is fixed to the inner side of the workbench (4), a slide rod (62) is slidably provided in the slide groove (61), a clamping plate (63) is connected to the slide rod (62), and a clamping block (64) is fixed to a side of the clamping plate (63) close to the axis of the workbench (4); A surface telescopic cylinder (65) is hingedly connected between a surface of the clamping plate (63) away from the clamping block (64) and the slide groove (61); The clamping plate (63) is rotatably connected to the slide rod (62); a baffle (66) perpendicular to the slide rod (62) is fixed to one end of the slide rod (62) close to the axis of the tooling table (4).

2. The aluminum alloy bumper CNC processing tool according to claim 1, characterized in that: A base (9) is provided below the connecting platform (1), the center of the connecting platform (1) is hinged to the base (9), and both sides of the connecting platform (1) are connected to both sides of the connecting platform (1) via supporting hydraulic cylinders (91).

3. The aluminum alloy profile bumper CNC processing tool according to claim 1, characterized in that: A spring is also provided between the slide rod (62) and the slide groove (61), and the spring provides an elastic force for retracting the slide rod (62) into the slide groove (61).

4. The aluminum alloy profile bumper CNC processing tool according to claim 1, characterized in that: A top telescopic cylinder (71) is embedded in the clamping block (64), a lifting plate (72) is fixed to the top of the piston rod of the top telescopic cylinder (71), and a pressing block (73) is fixed to the lower part of the lifting plate (72).

5. The aluminum alloy profile bumper CNC processing tool according to claim 1, characterized in that: The front and rear inner sides of the workbench (4) are each provided with a surface slide rail (41), a plurality of surface sliders (42) are slidably provided in the surface slide rail (41), each of the surface sliders (42) is connected to a servo motor, and each of the support rollers (5) is rotatably connected between the two surface sliders (42).

6. The aluminum alloy profile bumper CNC processing tool according to claim 1, characterized in that: The two inner side surfaces of the tooling table (4) are each provided with a side slide rail (43), a side slider (44) is slidably provided in the side slide rail (43), each side slider (44) is connected to a servo motor, and the side support assembly (8) is rotatably connected above the side slider (44).

7. The aluminum alloy profile bumper CNC processing tool according to claim 1, characterized in that: The side support assembly (8) comprises an inclined rod (81), one end of which is rotatably connected to the side slider (44), and the other end of which is telescopically provided with an extension rod (82), wherein the extension rod (82) is respectively embedded with a support frame (83) above and below.

8. The aluminum alloy profile bumper CNC processing tool according to claim 7, characterized in that: An annular support ring (86) is fixed inside the extension rod (82), a push tongue (85) passes through the support ring (86), one end of the push tongue (85) close to the support frame (83) is hinged to two hinged rods (84), the hinged rods (84) are respectively hinged to the two support frames (83), and the other end of the push tongue (85) is fixed to a push plate (87).

9. The aluminum alloy profile bumper CNC processing tool according to claim 8, characterized in that: A compression spring (88) is provided between the push plate (87) and the support ring (86).

10. The aluminum alloy profile bumper CNC processing tool according to claim 8, characterized in that: A side telescopic cylinder (89) is provided inside the oblique rod (81), and a piston rod of the side telescopic cylinder (89) is fixed to the push plate (87).

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