Milling machine fixture for automobile rear axle housing

Abstract

The utility model discloses an automobile rear axle shell milling jig, and particularly relates to the technical field of automobile mechanical clamping machining, the automobile rear axle shell milling jig comprises a supporting platform, bearing piles and an overturning assembly, bases are arranged on the two sides of the supporting platform, the bearing piles are arranged on the opposite sides of the upper end faces of the two sets of bases respectively, and movable sliding seats are arranged on one sides of the two sets of bearing piles respectively; the overturning assemblies are arranged on the upper end faces of the two movable sliding bases correspondingly. According to the utility model, the cost is saved through the replacement mechanism, the rear axle housing can be overturned through the overturning assembly, and the rear axle housing can be overturned from one side to the other side, so that the two sides of a workpiece can be processed, the production efficiency is improved, the planeness, perpendicularity and dimensional precision of the two processed sides are well controlled, and the production efficiency is improved. Machining errors and operation risks caused by inaccurate manual operation are reduced, the overall machining quality and stability are improved, the clamping range of the clamp can be flexibly adjusted by moving the sliding base, and the rear axle shell machining clamp is suitable for rear axle shells of different lengths.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive mechanical clamping processing, and more specifically, the utility model relates to a milling fixture for an automotive rear axle housing. Background Technique

[0002] Since the 20th century, the world's annual automobile production has first been counted in thousands and tens of thousands, and then in tens of millions. By 1978, it had reached about 42.49 million vehicles. The automobile industry has become the world's largest manufacturing industry. The processing of automotive rear axle housings is an important technological step in the automobile production process, and the milling fixture for automotive rear axle housings is the main mechanical equipment in this technological step;

[0003] After retrieval, the existing patent (publication number: CN112643361A) discloses a milling fixture for an automotive rear axle housing, including a left clamping body, a middle clamping body, an automotive rear axle housing, and a right clamping body. The left clamping body is arranged on the left side of the middle clamping body, and the right clamping body is arranged on the right side of the middle clamping body. The automotive rear axle housing is clamped between the upper ends of the left clamping body and the right clamping body, and the middle bottom surface of the automotive rear axle housing is located on the middle clamping body. A left support pillar is installed on the left part of the middle clamping body, and a right support pillar is installed on the right part of the middle clamping body. This milling fixture for automotive rear axle housings has a reasonable structural setting, which is convenient for clamping the workpiece between the left and right fixtures. The middle fixture uses a self-positioning auxiliary support, and the bottom middle part of the workpiece is stably positioned by the two supports above and the center disc, making the clamping stable, firm, and fast, facilitating assembly, processing, and disassembly, reducing the work intensity of the staff, and helping to improve work efficiency. The inventor found the following problems in the process of realizing the present utility model:

[0004] For the existing milling fixtures for rear axle housings, when machining on different surfaces, it is necessary to adjust the clamping position multiple times to meet the machining requirements. Multiple manual clamps will inevitably result in inaccurate operations, leading to machining errors. Moreover, due to the different lengths of different rear axle housings, the fixing and machining positions of the workpiece will be different, resulting in the need for the fixture to be adjustable according to the length of the rear axle housing to ensure the stable fixation and precise machining of the workpiece;

[0005] Therefore, a milling fixture for an automotive rear axle housing is proposed to solve the above problems. Content of the Utility Model

[0006] In order to overcome the above-mentioned defects of the prior art, the present utility model provides a milling fixture for an automotive rear axle housing to solve the problems raised in the above background technique.

[0007] To achieve the above object, the present utility model provides the following technical solution: An automotive rear axle housing milling fixture, comprising a support platform, load-bearing piles, and a flipping assembly. The two sides of the support platform are provided with bases. The load-bearing piles are respectively arranged on the opposite sides of the upper end surfaces of the two groups of bases. One side of each of the two groups of load-bearing piles is respectively provided with a moving slide. The flipping assemblies are respectively arranged on the upper end surfaces of the two groups of moving slides;

[0008] The flipping assembly includes a connecting plate. The connecting plate is arranged on the outer side of the load-bearing pile. A second motor is arranged on the left side of the connecting plate. A transmission shaft is arranged on the right side of the connecting plate. A clamping disc is arranged on the right end surface of the transmission shaft.

[0009] Preferably, fixing plates are arranged on the outer sides of the upper end surfaces of the two groups of bases. First motors are arranged on the opposite surfaces of the two groups of fixing plates. A screw rod is arranged between the load-bearing pile and the fixing plate.

[0010] Preferably, the outer surface of the screw rod is meshed with the inner surface of the moving slide. The two ends of the screw rod are respectively abutted against the load-bearing pile and the fixing plate.

[0011] Preferably, an electric telescopic column is arranged on the upper end surface of the support platform. Limiting blocks are arranged on both sides of the upper end surface of the electric telescopic column. A rear axle housing is arranged on the upper end surface of the limiting block.

[0012] Preferably, an installation groove is formed on the upper end surface of the load-bearing pile. The outer surfaces of both ends of the rear axle housing are respectively abutted against the installation groove.

[0013] Preferably, the output end of the first motor penetrates through the fixing plate and is connected to the screw rod. The output end of the second motor penetrates through the connecting plate and is connected to the transmission shaft.

[0014] The technical effects and advantages of the present utility model:

[0015] Compared with the prior art, the automotive rear axle housing milling fixture can flip the rear axle housing through the flipping assembly, and can flip the rear axle housing from one side to the other side, so that both sides of the workpiece can be processed, improving the production efficiency, ensuring that the flatness, perpendicularity, and dimensional accuracy of the two processed surfaces are well controlled, reducing the processing errors and operation risks caused by inaccurate manual operation, and improving the overall processing quality and stability.

[0016] Compared with the prior art, the automotive rear axle housing milling fixture drives the flipping assembly through the moving slide to adaptively abut against both ends of the rear axle housing, so that the workpiece can be quickly and accurately fixed at the processing position, the clamping range of the fixture can be flexibly adjusted to adapt to rear axle housings of different lengths, and there is no need to frequently adjust the position of the fixture, saving the adjustment time. Brief Description of the Drawings

[0017] Figure 1 This is a front view structural schematic diagram of the whole of the present utility model.

[0018] Figure 2 This is a side view structural schematic diagram of the installation groove of the present utility model.

[0019] Figure 3 This is the present utility model Figure 1 partial enlarged structural schematic diagram at position A.

[0020] Figure 4 This is a three-dimensional structural schematic diagram of the limit block of the present utility model.

[0021] Reference numerals in the drawings are: 1, support platform; 2, electric telescopic column; 3, limit block; 4, base; 5, load-bearing pile; 51, first motor; 6, installation groove; 7, rear axle housing; 8, fixing plate; 9, screw; 10, moving slide; 11, flipping assembly; 1101, connecting plate; 1102, second motor; 1103, transmission shaft; 1104, clamping disc. Detailed Description of the Preferred Embodiment

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model. Embodiment 1

[0023] As shown in the attached Figures 1 to 3 drawings, a milling fixture for an automobile rear axle housing includes a support platform 1, load-bearing piles 5, and a flipping assembly 11. Bases 4 are arranged on both sides of the support platform 1. The load-bearing piles 5 are respectively arranged on the opposite sides of the upper end surfaces of the two groups of bases 4. Moving slides 10 are respectively arranged on one sides of the two groups of load-bearing piles 5. The flipping assemblies 11 are respectively arranged on the upper end surfaces of the two groups of moving slides 10;

[0024] The flipping assembly 11 includes a connecting plate 1101. The connecting plate 1101 is arranged on the outer side of the load-bearing pile 5. A second motor 1102 is arranged on the left side of the connecting plate 1101. A transmission shaft 1103 is arranged on the right side of the connecting plate 1101. The output end of the second motor 1102 penetrates through the connecting plate 1101 and is connected to the transmission shaft 1103. A clamping disc 1104 is arranged on the right end surface of the transmission shaft 1103.

[0025] Wherein: Two groups of load-bearing piles 5 respectively support both ends of the rear axle housing 7. Both groups of flipping assemblies 11 drive the transmission shaft 1103 to rotate through the output end of the second motor 1102 passing through the connecting plate 1101, thereby driving the clamping disc 1104 to rotate. Then, when the moving slide 10 moves horizontally on the outer surface of the screw rod 9, the two clamping discs 1104 approach both ends of the rear axle housing 7 and abut against them. Subsequently, the clamping disc 1104 rotates, so that the rear axle housing 7 is flipped to the other side for processing, enabling both surfaces of the workpiece to be processed. Embodiment 2

[0026] Based on Embodiment 1, the solution in Embodiment 1 will be further refined and introduced in combination with the following specific working modes, as Figures 1 to 4 shown, and the details are described below:

[0027] As a preferred implementation manner, fixing plates 8 are provided on the outer sides of the upper end surfaces of the two groups of bases 4. First motors 51 are provided on the opposite surfaces of the two groups of fixing plates 8. A screw rod 9 is provided between the load-bearing pile 5 and the fixing plate 8. Both ends of the screw rod 9 are respectively abutted against the load-bearing pile 5 and the fixing plate 8. The output end of the first motor 51 penetrates the fixing plate 8 and is connected to the screw rod 9; further, the load-bearing pile 5 and the fixing plate 8 are connected by the screw rod 9, and then the first motor 51 is connected to the screw rod 9 at one end of the load-bearing pile 5, thereby driving the screw rod 9 to rotate.

[0028] As a preferred implementation manner, the outer surface of the screw rod 9 meshes with the inner surface of the moving slide 10; further, when the screw rod 9 rotates, due to the meshing of the moving slide 10, but the moving slide 10 is on the upper end surface of the base 4, when the screw rod 9 rotates, the moving slide 10 will move horizontally along with the rotation of the thread and will not rotate together with the screw rod 9.

[0029] As a preferred implementation manner, an electric telescopic column 2 is provided on the upper end surface of the support platform 1. Limit blocks 3 are provided on both sides of the upper end surface of the electric telescopic column 2. The rear axle housing 7 is provided on the upper end surface of the limit block 3; further, the electric telescopic column 2 adjusts its own telescopic length, thereby adjusting the height of the limit block 3. The limit block 3 is adjusted in height by the electric telescopic column 2 and is inserted into the center of the rear axle housing 7 for limiting, so as to avoid instability after the adjustment jig is flipped.

[0030] As a preferred implementation manner, an installation groove 6 is provided on the upper end surface of the load-bearing pile 5. The outer surfaces at both ends of the rear axle housing 7 are respectively abutted against the installation groove 6; further, the two groups of load-bearing piles 5 support and limit both ends of the rear axle housing 7 through the installation groove 6, restricting the movement range of the rear axle housing 7, and enabling it to rotate along with the flipping assembly 11 on the inner surface of the installation groove 6.

[0031] The working process of the present utility model is as follows: First, the rear axle housing 7 is placed in the load-bearing piles 5 above the two groups of bases 4. The load-bearing piles 5 limit the movement range of both ends of the rear axle housing 7 through the installation grooves 6. Subsequently, the first motor 51 drives the screw rod 9 between the load-bearing pile 5 and the fixing plate 8 to rotate. Since the base of the moving slide 10 contacts the base 4, when the screw rod 9 rotates, through the meshing effect, it will drive the moving slide 10 to move horizontally. Both groups of moving slides 10 drive the clamping disks 1104 of the flipping assembly 11 above to align with both ends of the rear axle housing 7 for abutting. The output end of the second motor 1102 passes through the connecting plate 1101 and then drives the transmission shaft 1103 to rotate, thereby driving the clamping disks 1104 abutting against both ends of the rear axle housing 7 to rotate, so that the rear axle housing 7 is flipped to the other side. After the flipping is completed, the electric telescopic column 2 above the support platform 1 starts to work. By controlling the operation of the motor, the telescopic length of itself is adjusted, thereby driving the limit block 3 to adjust the height. The limit block 3 is inserted into the inner cavity at the center of the rear axle housing 7 for limiting. After adjusting to the required height, it is locked at the fixed height through the internal locking system to avoid instability. The above is the working principle of the milling fixture for an automotive rear axle housing.

[0032] Finally: The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An automobile rear axle housing milling fixture, comprising a support platform (1), a load-bearing pile (5), and a flipping assembly (11), characterized in that: On both sides of the support platform (1), there are pedestals (4). The bearing piles (5) are respectively arranged on the opposite sides of the upper end faces of the two groups of pedestals (4). On one side of the two groups of bearing piles (5), there are moving sliders (10) respectively, and the flipping assemblies (11) are respectively arranged on the upper end faces of the two groups of moving sliders (10). The flipping assembly (11) includes a connecting plate (1101). The connecting plate (1101) is arranged on the outward side of the bearing pile (5). On the left side of the connecting plate (1101), there is a second motor (1102). On the right side of the connecting plate (1101), there is a transmission shaft (1103). On the right end face of the transmission shaft (1103), there is a clamping disc (1104).

2. The milling fixture for an automotive rear axle housing according to claim 1, wherein: On the outward sides of the upper end faces of the two groups of pedestals (4), there are fixing plates (8) respectively. On the opposite faces of the two groups of fixing plates (8), there are first motors (51) respectively. Between the bearing pile (5) and the fixing plate (8), there is a screw rod (9).

3. The milling fixture for the rear axle housing of an automobile according to claim 2, characterized in that: The outer surface of the screw rod (9) is meshed with the inner surface of the moving slider (10). The two ends of the screw rod (9) are respectively abutted against the bearing pile (5) and the fixing plate (8).

4. A milling fixture for an automotive rear axle housing according to claim 1, characterized in that: On the upper end face of the support platform (1), there is an electric telescopic column (2). On both sides of the upper end face of the electric telescopic column (2), there are limit blocks (3) respectively. On the upper end faces of the limit blocks (3), there is a rear axle housing (7).

5. The milling fixture for the rear axle housing of an automobile according to claim 4, wherein: On the upper end face of the bearing pile (5), there is an installation groove (6). The outer surfaces of both ends of the rear axle housing (7) are respectively abutted against the installation groove (6).

6. The milling fixture for an automotive rear axle housing according to claim 2, wherein: The output end of the first motor (51) passes through the fixing plate (8) and is connected to the screw rod (9). The output end of the second motor (1102) passes through the connecting plate (1101) and is connected to the transmission shaft (1103).

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