A CNC machining tooling for an aluminum alloy profile bumper

Abstract

The present invention discloses a CNC machining tooling for an aluminum alloy profile bumper, which includes a connecting table. At both ends of the connecting table, a driven bracket and a driving bracket are respectively provided. A tooling table is rotatably arranged between the driven bracket and the driving bracket, and the driving bracket can drive the tooling table to rotate. A plurality of support rollers are rotatably arranged at the bottom of the tooling table. A plurality of surface clamping components are symmetrically arranged on the front and rear surfaces of the tooling table, and the surface clamping components are distributed between the support rollers. Side support components are symmetrically arranged at both ends of the tooling table.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive parts processing, and specifically to a CNC processing tooling for aluminum alloy profile bumpers. Background Art

[0002] With the rapid development of the automotive industry, as an important part of the vehicle body, the quality and performance requirements for bumpers are getting higher and higher. Bumpers are usually made of aluminum alloy profiles, which are light in weight and high in strength, and can effectively absorb the impact force during collisions, protecting the safety of the vehicle and passengers. Especially for aluminum alloy bumpers with curved arcs on both sides, the safety of the vehicle in 25% offset collisions can be greatly improved.

[0003] In order to meet market demands, the production and processing technologies for bumpers are also constantly advancing. During the production process of bumpers, CNC processing technology is widely used due to its high precision and high efficiency. As an important supporting device for CNC processing equipment, the structure, shape, and usage scenarios of the CNC processing tooling have an important impact on the processing quality and efficiency of bumpers.

[0004] Currently, there are already some CNC processing toolings for bumpers on the market. They usually adopt 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 the existing toolings is relatively complex, and adjustment and maintenance are rather 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 quick adjustment and replacement. Secondly, when processing different surfaces of bumpers with the existing tooling, it is usually necessary to replace the tooling or adjust the workpiece position, which increases the processing time and cost.

[0005] For aluminum alloy bumpers with curved arcs on both sides, since the curved surface and the flat surface are in different planes, a CNC device with a vertical cutting tool cannot process the curved surface of the bumper. It is necessary to reinstall the bumper at an inclination, and it is difficult for the existing tooling fixtures to clamp the curved surface, making the fixation of the curved surface insecure.

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

[0007] Therefore, it is necessary to provide a CNC processing tooling for aluminum alloy profile bumpers to solve the problems raised in the above background art. Summary of the Invention

[0008] To achieve the above object, the present invention provides the following technical solution: A CNC machining tooling for an aluminum alloy profile bumper, including a connecting table, on both ends of which a driven bracket and a driving bracket are respectively provided. Between the driven bracket and the driving bracket, a tooling table is rotatably provided, and the driving bracket can drive the tooling table to rotate;

[0009] A plurality of support rollers are rotatably provided at the bottom of the tooling table;

[0010] A plurality of surface clamping components are symmetrically provided on the front and rear surfaces of the tooling table, and the surface clamping components are distributed between the support rollers;

[0011] Side support components are symmetrically provided at both ends of the tooling table;

[0012] The surface clamping component includes a chute, which is fixed on the inner side surface of the tooling table. A slide bar is slidably provided in the chute, and a clamping plate is connected to the slide bar. A clamping block is fixed on the surface of the clamping plate close to the axis of the tooling table;

[0013] A surface telescopic cylinder is hinged between the surface of the clamping plate away from the clamping block and the chute;

[0014] The clamping plate is rotatably connected to the slide bar, and a baffle perpendicular to the slide bar is fixed at one end of the slide bar close to the axis of the tooling table.

[0015] Further, as a preference, a base is provided below the connecting table. The center of the connecting table is hinged to the base, and both sides of the connecting table are respectively connected to both sides of the connecting table through support hydraulic cylinders.

[0016] Further, as a preference, a spring is further provided between the slide bar and the chute, and the spring provides an elastic force to retract the slide bar into the chute.

[0017] Further, as a preference, a top telescopic cylinder is embedded in the clamping block. The top of the piston rod of the top telescopic cylinder is fixed with a lifting plate, and a pressing block is fixed at the lower part of the lifting plate.

[0018] Further, as a preference, surface slide rails are respectively provided on the front and rear inner sides of the tooling table. A plurality of surface sliders are slidably provided in the surface slide rails. A servo motor is connected in each surface slider, and each support roller is respectively rotatably connected between the surface sliders on both sides.

[0019] Further, as a preference, side slide rails are respectively provided on both inner side surfaces of the tooling table. Side sliders are slidably provided in the side slide rails. A servo motor is connected in each side slider, and the side support component is rotatably connected above the side slider.

[0020] Further, preferably, the side support assembly includes an inclined rod, one end of the inclined rod is rotatably connected to the side slider, the other end of the inclined rod is provided with an extension rod in a telescopic manner, and support frames are embedded in the upper and lower parts of the extension rod respectively.

[0021] Further, preferably, a circular support ring is fixed inside the extension rod, a push tongue penetrates through the support ring, two hinge rods are hinged to one end of the push tongue close to the support frame, the hinge rods are respectively hinged to the two support frames, and a push plate is fixed to the other end of the push tongue.

[0022] Further, preferably, a compression spring is arranged between the push plate and the support ring.

[0023] Further, preferably, a side telescopic cylinder is arranged inside the inclined rod, and the piston rod of the side telescopic cylinder is fixed to the push plate.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] In the present invention, the tooling table can be conveniently rotated and the angle can be adjusted, so that the CNC machining equipment can easily machine different surfaces of the bumper, without frequently replacing the tooling or adjusting the workpiece position, greatly reducing the downtime and operation complexity in the machining process, thereby improving the production efficiency.

[0026] In the present invention, through the precisely designed surface clamping assembly and side support assembly, the bumper is firmly clamped and supported during the machining process, effectively avoiding shaking and displacement during machining. At the same time, the function of the left and right movement of the support roller enables the tool to machine the bottom surface of the bumper without obstruction, further ensuring the flatness and precision of the machining surface.

[0027] In the present invention, the structural design of the tooling table enables bumpers of different sizes and shapes to be stably clamped and machined, meeting the diverse production requirements. The device can adapt to the machining requirements of different CNC machining equipment, improving the utilization rate of the equipment. Description of the Drawings

[0028] Figure 1 It is a structural schematic diagram of a CNC machining tooling for an aluminum alloy profile bumper;

[0029] Figure 2 It is a structural schematic diagram of the surface clamping assembly;

[0030] Figure 3 It is a structural schematic diagram when the tooling table is in a vertical state;

[0031] Figure 4 It is a structural schematic diagram when the tooling table is in a state with the bottom facing up;

[0032] Figure 5Schematic diagram of the half-section structure of the side support assembly;

[0033] In the figure: 1. Connecting platform; 2. Driven bracket; 3. Driving bracket; 4. Tooling platform; 41. Surface slide rail; 42. Surface slider; 43. Side slide rail; 44. Side slider; 5. Support roller; 6. Surface clamping assembly; 61. Chute; 62. Slide bar; 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. Inclined rod; 82. Extension rod; 83. Support frame; 84. Hinge rod; 85. Pushing tongue; 86. Support ring; 87. Pushing plate; 88. Compression spring; 89. Side telescopic cylinder; 9. Base; 91. Support hydraulic cylinder. Specific implementation mode

[0034] Please refer to Figure 1 In the embodiment of the present invention, a CNC machining tooling for an aluminum alloy profile bumper includes a connecting platform 1. At both ends of the connecting platform 1, a driven bracket 2 and a driving bracket 3 are respectively provided. A tooling platform 4 is rotatably arranged between the driven bracket 2 and the driving bracket 3, and the driving bracket 3 can drive the tooling platform 4 to rotate;

[0035] A plurality of support rollers 5 are rotatably arranged at the bottom of the tooling platform 4;

[0036] A plurality of surface clamping assemblies 6 are symmetrically arranged on the front and rear surfaces of the tooling platform 4, and the surface clamping assemblies 6 are distributed between the support rollers 5;

[0037] Side support assemblies 8 are symmetrically arranged at both ends of the tooling platform 4.

[0038] The bumper is placed above the support rollers 5. The front and rear surfaces of the bumper can be clamped at the center of the tooling platform 4 through the surface clamping assemblies 6. The two ends of the fixed bumper can be clamped through the side support assemblies 8 to avoid shaking under force during processing. By driving the tooling platform 4 to rotate, different surfaces of the CNC machined bumper can be obtained.

[0039] 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 respectively connected to both sides of the connecting platform 1 through support hydraulic cylinders 91. By adjusting the expansion and contraction of the support 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.

[0040] Please refer to Figure 2 and Figure 3, in this embodiment, the surface clamping assembly 6 includes a chute 61 fixed to the inner side surface of the tooling table 4. A sliding rod 62 is slidably disposed in the chute 61. A clamping plate 63 is connected to the sliding rod 62, and a clamping block 64 is fixed to the surface of the clamping plate 63 close to the axis of the tooling table 4.

[0041] A surface expansion cylinder 65 is hinged between the surface of the clamping plate 63 away from the clamping block 64 and the chute 61. By the expansion and contraction of the surface expansion cylinder 65, the clamping plate 63 can be pushed to slide back and forth, so that the clamping block 64 can fit against the front and rear surfaces of the bumper to clamp the bumper.

[0042] In this embodiment, the clamping plate 63 is rotatably connected to the sliding rod 62, and a baffle 66 perpendicular to the sliding rod 62 is fixed to one end of the sliding rod 62 close to the axis of the tooling table 4.

[0043] In this embodiment, a spring is further disposed between the sliding rod 62 and the chute 61, and the spring provides an elastic force to retract the sliding rod 62 into the chute 61.

[0044] That is to say, when the surface expansion cylinder 65 is in the shortest state, the sliding rod 62 retracts into the chute 61, and the clamping plate 63 folds to a nearly horizontal state. At this time, the whole surface clamping assembly 6 leaves the projection plane where the bumper is located, so as to avoid the machining space. When the tooling table 4 rotates to the vertical position, the CNC can vertically cut the front and rear surfaces of the bumper.

[0045] When the surface expansion cylinder 65 extends from the shortest state, since the sliding rod 62 is pulled by the spring, the clamping plate 63 rotates upward to fit against the baffle 66 to reach the vertical state. Due to the limiting effect of the baffle 66, the clamping plate 63 cannot continue to rotate. When the expansion cylinder 65 continues to extend, the sliding rod 62 overcomes the pulling force of the spring and extends until the clamping block 64 fits against the bumper, so as to ensure that the clamping block 64 fits tightly against the bumper in the vertical state.

[0046] In this embodiment, a top expansion cylinder 71 is embedded in the clamping block 64. The top of the piston rod of the top expansion cylinder 71 is fixed with a lifting plate 72, and a pressing block 73 is fixed to the lower part of the lifting plate 72. When the clamping block 64 fits against the front and rear surfaces of the bumper, the pressing block 73 can be pressed against the bumper by lowering the top expansion cylinder 71.

[0047] Please refer to Figure 4 , in this embodiment, surface slide rails 41 are provided on the front and rear inner side surfaces of the tooling table 4. A plurality of surface sliders 42 are slidably disposed in the surface slide rails 41. A servo motor is connected to each surface slider 42, and each support roller 5 is rotatably connected between the surface sliders 42 on both sides. Through the corresponding servo motor, the surface slider 42 connected thereto can be driven to move the support roller 5. When the tooling table 4 rotates to the bottom facing down, the support roller 5 can be misaligned with the tool of the CNC, so as to avoid the machining space.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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 .

[0052] 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.

[0053] When it comes to specific implementation,

[0054] 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;

[0055] 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;

[0056] 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;

[0057] Drive the side slider 44 with a servo motor to move, align the inclined rod 81 with the hole in the bumper end face, extend the telescopic cylinder 89 on the extension side, push the extension rod 82 to extend out of the inclined rod 81 and insert it into the hole in the bumper end face. When the extension rod 82 extends to the longest, continue to extend the telescopic cylinder 89 on the extension side to make the support frame 83 extend and press against the inner wall of the bumper to complete the support of both ends of the bumper;

[0058] According to the processing requirements, by adjusting the telescopic movement of the support hydraulic cylinder 91, make the connecting table 1 tilt to both sides, so as to adjust the inclined plane of the bumper to a horizontal plane for the convenience of CNC machining;

[0059] According to the processing requirements, by driving the tooling table 4 to rotate, the CNC machining equipment can machine different surfaces of the bumper, including:

[0060] Condition A: When the tooling table 4 rotates to the horizontal and the upper surface of the bumper faces upward, the CNC machines the upper surface of the bumper ( Figure 1 state). When the machining surface is blocked by the pressing block 73, by raising the corresponding top telescopic cylinder 71, make the pressing block 73 leave the upper surface of the bumper, and contract the corresponding surface telescopic cylinder 65 to make the lifting plate 72 and the pressing block 73 leave the projection position of the upper surface of the bumper, so that the tool can machine the upper surface of the bumper without being blocked. After the machining is completed, the pressing block 73 continues to press the bumper tightly;

[0061] Condition B: When the tooling table 4 rotates to the vertical and the front or rear surface of the bumper faces upward, the CNC machines the front or rear surface of the bumper ( Figure 3 state). When the machining surface is blocked by the clamping block 64, perform the same steps as in Condition A, so that the clamping plate 63 and the clamping block 64 can leave the projection position of the front or rear surface of the bumper, and the tool can machine the front or rear surface of the bumper without being blocked. After the machining is completed, the clamping block 64 continues to clamp the bumper tightly;

[0062] Condition C: When the tooling table 4 is horizontal and the bottom surface of the bumper faces upward, the CNC machines the bottom surface of the bumper ( Figure 4 state). When the machining surface is blocked by the support roller 5, drive the corresponding surface slider 42 with the corresponding servo motor to move the support roller 5 left and right to leave the machining surface. After the machining is completed, the support roller 5 moves back to its original position;

[0063] After the machining is completed, turn off the CNC machining equipment. When the tooling table rotates to the horizontal and the upper surface of the bumper faces upward, contract the telescopic cylinder on the contraction side and the surface telescopic cylinder to release the clamping and support of the bumper, and remove the machined bumper from the tooling table for subsequent processing or inspection.

[0064] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall 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); A spring is further provided between the slide bar (62) and the slide groove (61), and the spring provides an elastic force for retracting the slide bar (62) into the slide groove (61); 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).

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: 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).

4. 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).

5. 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.

6. The aluminum alloy profile bumper CNC processing tool according to claim 5, 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).

7. The aluminum alloy profile bumper CNC processing tool according to claim 6, characterized in that: A compression spring (88) is provided between the push plate (87) and the support ring (86).

8. The aluminum alloy profile bumper CNC processing tool according to claim 6, 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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