Surface machining fixture for automobile aluminum forgings

Abstract

The utility model belongs to the technical field of automobile forge piece machining equipment, especially, relate to a kind of automobile aluminium forge piece surface processing fixture including bottom plate, fixed block is cuboid structure, and is fixedly connected with bottom plate by bolt etc., fixed clamping plate is rectangular plate, and fixed clamping plate is detachably installed in fixed block by two bolts one side close to moving block, guide rail adopts two anticorrosive linear guides arranged in parallel, and moving block is slid stably by guide rail, moving block is cuboid structure, and anticorrosive sliding block compatible with guide rail is equipped on lower surface, and adjustable clamping plate is installed in the side of moving block close to fixed block, and the aluminium forge piece of two ends non-parallel can be clamped by inclination adjustment, and processing precision and efficiency are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of automotive forging processing equipment, and in particular relates to a surface processing fixture for automotive aluminum forgings. Background Technology

[0002] With the trend of lightweighting in automobiles, aluminum forgings are widely used in key parts such as chassis, body, and power system due to their advantages of light weight and high strength. However, aluminum forgings are prone to forming a loose oxide layer on their surface, resulting in poor corrosion resistance. It is necessary to improve corrosion resistance through technologies such as chemical conversion, anodizing, and coating spraying. During the surface treatment process, the clamping stability of the fixture and the protection effect on the workpiece directly determine the final corrosion resistance quality. Some existing aluminum forgings have non-parallel errors at both ends after forging, which often results in one side of the forging being fixed while the other side cannot be effectively clamped, affecting processing accuracy and efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a surface processing fixture for automotive aluminum forgings to address the aforementioned technical problems.

[0004] In view of this, the present invention provides a surface processing fixture for automotive aluminum forgings, including a base plate; A fixing block is fixedly connected to one end of the upper surface of the base plate, and a fixing clamp is installed on one side of the fixing block; The base plate has two guide rails fixedly connected to its upper surface. The movable block slides along the guide rail on the upper surface of the base plate. An adjustable clamp is installed on the side of the movable block that is close to the fixed block.

[0005] In the above technical solution, the adjustable clamp further includes: The lower housing is L-shaped and is fixedly connected to the outside of the moving block by bolts. A groove is provided on the lower housing. The upper housing is assembled on the upper surface of the lower housing, and a through hole is provided on the upper surface of the upper housing; A fixed shaft passes through a through hole and is fixedly connected in a groove to achieve a rotatable connection of the upper housing.

[0006] In the above technical solution, furthermore, vertical guide grooves are respectively opened on both sides of the upper surface of the lower shell, and each vertical guide groove is connected to a horizontal guide groove. Vertical guide rods are respectively provided on both sides of the bottom surface of the upper shell, and each vertical guide rod is connected to a horizontal guide rod. The vertical guide rods correspond to the vertical guide grooves, and the horizontal guide rods correspond to the horizontal guide grooves. The vertical guide rods are slidably assembled in the vertical guide grooves, and the horizontal guide rods are slidably assembled in the horizontal guide grooves.

[0007] In the above technical solution, a vertical groove gap is formed between the vertical guide rod and the vertical guide groove, and a horizontal groove gap is formed between the horizontal guide rod and the horizontal guide groove; the vertical groove gap and the horizontal groove gap provide rotation space for the upper housing, so that the upper housing can rotate around the fixed axis as the fulcrum.

[0008] In the above technical solution, the rotation angle of the upper housing with the fixed shaft as the fulcrum is further 5° to 10°.

[0009] In the above technical solution, a circular arc guide groove is further provided on the side of the lower housing. The circular arc guide groove is used for the circular arc part on the outside of the fixed shaft to be embedded, so as to achieve a stable connection between the fixed shaft and the lower housing and avoid the fixed shaft from shifting after assembly.

[0010] In the above technical solution, furthermore, several clamping blocks are assembled on the opposing surfaces of the fixing plate and the upper shell.

[0011] In the above technical solution, a hydraulic rod is further provided at the end of the moving block away from the fixed block, and a hydraulic cylinder is provided on one side of the hydraulic rod.

[0012] The beneficial effects of this utility model are as follows: 1. An adjustable clamping plate is installed on the side of the moving block near the fixed block, which can clamp aluminum forgings with non-parallel ends by tilting adjustment, thereby improving processing accuracy and efficiency.

[0013] 2. After the fixed shaft passes through the through hole of the upper housing, its axis coincides with the rotation axis of the upper housing, thus realizing the rotatable connection of the upper housing.

[0014] 3. The side of the lower housing is provided with an arc guide groove. The arc guide groove is used for the arc part of the outer side of the fixed shaft to be inserted, which restricts the radial displacement of the fixed shaft, so as to achieve a stable connection between the fixed shaft and the lower housing and ensure rotational stability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of this utility model; Figure 3 This is a top view of the present invention; Figure 4 This is a utility model Figure 3 A magnified view of a section at point A in the middle; Figure 5 This is a side view of the movable block of this utility model; The markings in the diagram are as follows: 1-base plate, 2-fixed plate, 3-fixed clamping plate, 4-guide rail, 5-moving block, 6-adjustable clamping plate, 7-lower housing, 8-groove, 9-upper housing, 10-through hole, 11-fixed shaft, 12-vertical guide groove, 13-horizontal guide groove, 14-vertical guide groove, 15-horizontal guide rod, 16-vertical groove gap, 17-horizontal groove gap, 18-arc guide groove, 19-clamping block, 20-hydraulic rod, 21-hydraulic cylinder. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0017] Example 1: This embodiment provides a surface machining fixture for automotive aluminum forgings, including: Base plate 1; Fixed block 2, fixedly connected to one end of the upper surface of base plate 1, and fixed clamping plate 3 installed on one side of fixed block 2; Guide rail 4, two guide rails 4 are fixedly connected to the upper surface of the base plate 1; Movable block 5 slides along guide rail 4 on the upper surface of base plate 1; Adjustable clamp 6, the movable block 5 is installed on the side of the fixed block 2 with the adjustable clamp 6.

[0018] As can be seen in this embodiment, the base plate 1 is made of steel plate. The base plate 1 has mounting holes at its four corners for fixing to the surface treatment equipment workbench (such as a passivation spray table) with anti-corrosion bolts to avoid corrosion of the connection structure by the treatment liquid. The fixing block 2 is a cuboid structure with a galvanized passivation treatment to improve corrosion resistance. It is fixed to the base plate 1 by bolts or other means. The fixing clamp 3 is a rectangular plate and is detachably installed on the side of the fixing block 2 near the moving block 5 by two bolts. The guide rail 4 uses two parallel anti-corrosion linear guide rails to ensure the sliding stability of the moving block 5. The moving block 5 is a cuboid structure with the same material as the fixing block 2. The lower surface is provided with an anti-corrosion slider that is compatible with the guide rail 4. An adjustable clamp 6 is installed on the side of the moving block 5 near the fixing block 2, which can clamp aluminum forgings with non-parallel ends by tilting adjustment, thereby improving processing accuracy and efficiency.

[0019] Example 2: This embodiment provides a surface processing fixture for automotive aluminum forgings, which, in addition to the technical solutions described in the above embodiments, also has the following technical features.

[0020] The adjustable clamp 6 includes: The lower housing 7 is L-shaped plate and is fixedly connected to the outside of the movable block 5 by bolts. A groove 8 is provided on the lower housing 7. The upper housing 9 is assembled on the upper surface of the lower housing 7, and the upper surface of the upper housing 9 is provided with a through hole 10; A fixed shaft 11 passes through a through hole 10 and is fixedly connected in a groove 8 to enable a rotatable connection of the upper housing 9.

[0021] As can be seen in this embodiment, the lower housing 7 is an L-shaped plate made of aluminum alloy and is fixedly connected to the outside of the moving block 5 by anti-corrosion bolts. The lower housing 7 has a groove 8 for accommodating the fixed shaft 11. The upper housing 9 is assembled on the upper surface of the lower housing 7. The upper surface of the upper housing 9 has a through hole 10 with a diameter that matches the diameter of the fixed shaft 11 for passing through the fixed shaft 11. The fixed shaft 11 is made of 40Cr steel. After the fixed shaft 11 passes through the through hole 10 of the upper housing 9, its axis coincides with the rotation axis of the upper housing 9, so that the upper housing 9 can be rotatably connected.

[0022] Example 3: This embodiment provides a surface processing fixture for automotive aluminum forgings, which, in addition to the technical solutions described in the above embodiments, also has the following technical features.

[0023] Vertical guide grooves 12 are provided on both sides of the upper surface of the lower housing 7, and each vertical guide groove 12 is connected to a horizontal guide groove 13. Vertical guide rods 14 are provided on both sides of the bottom surface of the upper housing 9, and each vertical guide rod 14 is connected to a horizontal guide rod 15. The vertical guide rods 14 correspond to the vertical guide grooves 12, and the horizontal guide rods 15 correspond to the horizontal guide grooves 13. The vertical guide rods 14 are slidably mounted in the vertical guide grooves 12, and the horizontal guide rods 15 are slidably mounted in the horizontal guide grooves 13.

[0024] As can be seen from this embodiment, vertical guide grooves 12 are respectively provided on both sides of the upper surface of the lower housing 7, and each vertical guide groove 12 is connected to a horizontal guide groove 13. Vertical guide rods 14 are respectively provided on both sides of the bottom surface of the upper housing 9, and each vertical guide rod 14 is connected to a horizontal guide rod 15. The vertical guide rods 14 correspond to the vertical guide grooves 12, and the horizontal guide rods 15 correspond to the horizontal guide grooves 13. The vertical guide rods 14 are slidably mounted in the vertical guide grooves 12, and the horizontal guide rods 15 are slidably mounted in the horizontal guide grooves 13.

[0025] Example 4: This embodiment provides a surface processing fixture for automotive aluminum forgings, which, in addition to the technical solutions described in the above embodiments, also has the following technical features.

[0026] A vertical groove gap 16 is formed between the vertical guide rod 14 and the vertical guide groove 12, and a horizontal groove gap 17 is formed between the horizontal guide rod 15 and the horizontal guide groove 13; the vertical groove gap 16 and the horizontal groove gap 17 provide rotation space for the upper housing 9, so that the upper housing 9 can rotate with the fixed shaft 11 as the fulcrum.

[0027] As can be seen from this embodiment, a vertical groove gap 16 is formed between the vertical guide rod 14 and the vertical guide groove 12, and a horizontal groove gap 17 is formed between the horizontal guide rod 15 and the horizontal guide groove 13. The vertical groove gap 16 and the horizontal groove gap 17 provide rotation space for the upper housing 9, so that the upper housing 9 can rotate around the fixed shaft 11 as the fulcrum, ensuring that the aluminum forging can be clamped and avoiding local stress damage.

[0028] Example 5: This embodiment provides a surface processing fixture for automotive aluminum forgings, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0029] The rotation angle of the upper housing 9 with the fixed shaft 11 as the fulcrum ranges from 5° to 10°.

[0030] As can be seen from this embodiment, the rotation angle range of the upper housing 9 with the fixed shaft 11 as the fulcrum is 5° to 10°, which can accommodate the unevenness error of 0.1-0.5mm on the surface of the aluminum forging.

[0031] Example 6: This embodiment provides a surface processing fixture for automotive aluminum forgings, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0032] The lower housing 7 has an arc guide groove 18 on its side. The arc guide groove 18 is used to embed the arc part on the outside of the fixed shaft 11 to achieve a stable connection between the fixed shaft 11 and the lower housing 7 and to prevent the fixed shaft 11 from shifting after assembly.

[0033] As can be seen from this embodiment, the side of the lower housing 7 is provided with an arc guide groove 18. The arc guide groove 18 is used for the arc portion of the outer side of the fixed shaft 11 to be inserted, restricting the radial offset of the fixed shaft 11, so as to achieve a stable connection between the fixed shaft 11 and the lower housing 7 and ensure rotational stability.

[0034] Example 7: This embodiment provides a surface processing fixture for automotive aluminum forgings, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0035] Several clamping blocks 19 are mounted on the opposite surfaces of the fixed clamping plate 3 and the upper housing 9.

[0036] As can be seen in this embodiment, several clamping blocks 19 are assembled on the opposing surfaces of the fixed clamping plate 3 and the upper housing 9. The clamping blocks 19 are serrated blocks, which are made of 40Cr steel that has undergone quenching treatment. 40Cr steel has good toughness and is not easy to break when clamped. It will not damage the surface of the aluminum parts due to excessive hardness and pressure. It is suitable for clamping scenarios such as aluminum forgings for automotive chassis that have certain requirements for surface precision but do not require extreme anti-scratch. Nylon material is also selected, which can completely avoid indentation and scratches when in contact with aluminum forgings, and is suitable for high surface precision aluminum forgings such as automotive exterior parts.

[0037] Example 8: This embodiment provides a surface processing fixture for automotive aluminum forgings, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0038] A hydraulic rod 20 is provided at the end of the movable block 5 away from the fixed block 2, and a hydraulic cylinder 21 is provided on one side of the hydraulic rod 20.

[0039] As can be seen in this embodiment, a hydraulic rod 20 is provided at the end of the movable block 5 away from the fixed block 2, and a hydraulic cylinder 21 is provided on one side of the hydraulic rod 20. The piston rod end of the hydraulic rod 20 is detachably connected to the connecting hole opened on the movable block 5 through a pin, and the connecting part is provided with an anti-corrosion sealing sleeve. The hydraulic rod 20 is driven to extend and retract by the hydraulic cylinder 21, which drives the movable block 5 to move along the guide rail 4 towards the fixed block 2, thereby realizing the clamping action of the automotive aluminum forging. It can be adapted to aluminum forgings of different thicknesses and avoids damage to the workpiece due to excessive clamping force.

[0040] Working principle: The aluminum forging to be processed is placed between the fixed clamping plate 3 and the upper housing 9, so that one side of the aluminum forging first contacts the clamping block 19 of the fixed clamping plate 3. The hydraulic cylinder 21 drives the hydraulic rod 20 to push the moving block 5 along the guide rail 4 towards the fixed block 2, which drives the adjustable clamping plate 6 to gradually approach the aluminum forging. If the two ends of the workpiece are not parallel, the upper housing 9 will be subjected to a tilting reaction force when it contacts the aluminum forging. At this time, the upper housing 9 will rotate around the fixed shaft 11. The vertical groove gap 16 and the horizontal groove gap 17 provide space for rotation until the clamping block 19 of the upper housing 9 is completely in contact with the surface of the aluminum forging, thus achieving the clamping effect. Subsequently, the corrosion resistance of the aluminum forging is improved by coating and spraying technologies.

[0041] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A surface machining fixture for automotive aluminum forgings, characterized in that, include: Base plate (1); Fixed block (2), a fixed block (2) is fixedly connected to one end of the upper surface of the base plate (1), and a fixed clamping plate (3) is installed on one side of the fixed block (2); Guide rail (4), two guide rails (4) are fixedly connected to the upper surface of the base plate (1); The movable block (5) slides along the guide rail (4) on the upper surface of the base plate (1); Adjustable clamp (6), the movable block (5) is equipped with an adjustable clamp (6) on the side close to the fixed block (2); The adjustable clamp (6) includes: The lower housing (7) is L-shaped and is fixedly connected to the outside of the moving block (5) by bolts. The lower housing (7) has a groove (8) on it. The upper housing (9) is assembled on the upper surface of the lower housing (7), and the upper surface of the upper housing (9) is provided with a through hole (10). A fixed shaft (11) passes through a through hole (10) and is fixedly connected in a groove (8) to realize the rotatable connection of the upper housing (9).

2. The surface machining fixture for automotive aluminum forgings according to claim 1, characterized in that, Vertical guide grooves (12) are provided on both sides of the upper surface of the lower housing (7), and each vertical guide groove (12) is connected to a horizontal guide groove (13). Vertical guide rods (14) are provided on both sides of the bottom surface of the upper housing (9), and each vertical guide rod (14) is connected to a horizontal guide rod (15). The vertical guide rods (14) correspond to the vertical guide grooves (12), and the horizontal guide rods (15) correspond to the horizontal guide grooves (13). The vertical guide rods (14) are slidably mounted in the vertical guide grooves (12), and the horizontal guide rods (15) are slidably mounted in the horizontal guide grooves (13).

3. The surface machining fixture for automotive aluminum forgings according to claim 2, characterized in that, A vertical groove gap (16) is formed between the vertical guide rod (14) and the vertical guide groove (12), and a horizontal groove gap (17) is formed between the horizontal guide rod (15) and the horizontal guide groove (13); the vertical groove gap (16) and the horizontal groove gap (17) provide rotation space for the upper housing (9), so that the upper housing (9) can rotate with the fixed shaft (11) as the fulcrum.

4. The surface machining fixture for automotive aluminum forgings according to claim 3, characterized in that, The rotation angle of the upper housing (9) with the fixed shaft (11) as the fulcrum is 5° ~ 10°.

5. A surface finishing fixture for automotive aluminum forgings according to claim 4, characterized in that, The lower housing (7) has an arc-shaped guide groove (18) on its side. The arc-shaped guide groove (18) is used for the arc-shaped part of the outer side of the fixed shaft (11) to be inserted. To achieve a stable connection between the fixed shaft (11) and the lower housing (7) and to prevent the fixed shaft (11) from shifting after assembly.

6. The surface machining fixture for automotive aluminum forgings according to claim 1, characterized in that, Several clamping blocks (19) are mounted on the opposite surfaces of the fixed clamping plate (3) and the upper shell (9).

7. A surface machining fixture for automotive aluminum forgings according to claim 1, characterized in that, The movable block (5) is provided with a hydraulic rod (20) at one end away from the fixed block (2), and a hydraulic cylinder (21) is provided on one side of the hydraulic rod (20).

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