Numerical control machining tool for aluminum casting machine shell part

Abstract

The utility model discloses a numerical control machining tool for an aluminum casting machine shell part. The numerical control machining tool comprises a base plate. The positioning assembly is connected to the base plate and used for installing a workpiece. The clamping assembly is arranged on the outer side of the positioning assembly and used for clamping side lugs of the workpiece so that the workpiece can be fixed in the vertical direction. The auxiliary machining clamp comprises a base plate, a positioning assembly and a limiting assembly, the positioning assembly is arranged on the base plate, the limiting assembly is connected with the base plate so that a workpiece can be fixed in the horizontal direction, and the limiting assembly comprises telescopic pieces arranged on the two sides of the positioning assembly respectively and a supporting side plate. And the dimensional precision of the machined workpiece is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of aluminum casting processing technology, specifically relating to CNC machining tooling for aluminum casting machine housings. Background Technology

[0002] Medium to large-sized metal shell structures are generally manufactured by casting into blanks, which are then finished using milling or grinding techniques. Figure 3 When machining the cast aluminum blank shell, the difficulty lies in ensuring the positional accuracy of the countersunk positioning hole on the end face. The main problem currently faced is how to provide an effective fixture structure to assist in the CNC precision machining process, such as boring the positioning hole and drilling the side ear. Utility Model Content

[0003] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0004] A CNC machining fixture for aluminum casting machine housings includes: a base plate; and a positioning assembly connected to the base plate for mounting the workpiece.

[0005] A clamping assembly, disposed outside the positioning assembly, is used to clamp the side lugs of the workpiece so as to fix the workpiece in the vertical direction;

[0006] A limiting component is connected to the base plate to fix the workpiece in the horizontal direction. The limiting component includes telescopic members respectively disposed on both sides of the positioning component, and a supporting side plate.

[0007] The positioning component includes a positioning sleeve and a positioning head that is slidably connected to the positioning sleeve and cooperates with the workpiece. The positioning sleeve has a cavity for placing an elastic element, and the positioning head is shaped like a mushroom-shaped cone.

[0008] Furthermore, the bottom of the positioning seat is provided with a plug rod, which is threadedly connected to the base plate.

[0009] Furthermore, the positioning seat sleeve is evenly distributed with several fastening through holes.

[0010] Furthermore, the free end of the telescopic component is connected to a limit block, and support pins are symmetrically arranged on the inner side of the support side plate.

[0011] Furthermore, at least four clamping assemblies are provided, symmetrically distributed on both sides of the positioning assembly. Furthermore, each clamping assembly includes a cylinder, a clamping jaw hinged to the free end of the cylinder, and a connecting rod.

[0012] mechanism.

[0013] Furthermore, the upper end of the substrate is connected to ear supports disposed on both sides of the positioning component.

[0014] Furthermore, at least one set of lifting rings is connected to the upper end of the substrate.

[0015] Furthermore, at least one pair of spring support pins are connected to the substrate.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] An auxiliary machining fixture was designed for a specific cast aluminum shell structure, which can accurately position the workpiece and ensure the dimensional accuracy of the workpiece.

[0018] By employing clamping and limiting components on a base plate to restrict the longitudinal and horizontal degrees of freedom of the workpiece, the machining quality of the workpiece is guaranteed during CNC machining. The positioning component utilizes a sliding positioning sleeve and a positioning head, which mate with holes opened at the bottom of the workpiece to prevent workpiece misalignment. Because the positioning head has a mushroom-shaped conical design, it floats up and down through the action of an elastic element when mating with the workpiece's positioning hole, making it highly adaptable to different sizes of the workpiece's positioning hole inner diameter and ensuring accurate positioning. Attached Figure Description

[0019] Figure 1 is a three-dimensional structural diagram illustrating a specific embodiment of the present utility model;

[0020] Figure 2 is a schematic diagram of the main structure illustrating a specific embodiment of the present utility model;

[0021] Figure 3 is a schematic diagram of the exploded structure illustrating a specific embodiment of this utility model;

[0022] Figure 4 is a cross-sectional structural diagram illustrating a specific embodiment of the present utility model;

[0023] Figure 5 is an exploded view of the positioning component in a specific embodiment of this utility model;

[0024] Figure 6 is a cross-sectional view of the positioning component in a specific embodiment of the present invention;

[0025] The reference numerals in the accompanying drawings include:

[0026] Base plate 1, lifting ring 10, positioning assembly 2, positioning seat sleeve 20, cavity 200, plug rod 201, fastening through hole 202, positioning head 21, elastic element 23, clamping assembly 3, clamping claw 30, linkage mechanism 31, telescopic element 40, limiting pressure block 400, supporting side plate 41, supporting nail 410, ear seat support 5, spring support pin 6, workpiece 7, side ear 70, positioning hole 71. Detailed Implementation

[0027] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The same or similar reference numerals in the drawings of the embodiments of this utility model correspond to the same or similar components. In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0029] As shown in Figure 1- Figure 6 As shown, the CNC machining fixture for aluminum casting machine housing of this utility model includes a base plate 1, a positioning component 2, a clamping component 3, and a limiting component.

[0030] Positioning component 2 is connected to base plate 1 for mounting workpiece 7;

[0031] The clamping assembly 3 is disposed outside the positioning assembly 2 and is used to clamp the side lug 70 of the workpiece 7 so as to fix the workpiece 7 in the vertical direction;

[0032] The limiting component is connected to the base plate 1 to fix the workpiece 7 in the horizontal direction. The limiting component includes telescopic members 40 respectively disposed on both sides of the positioning component 2, and a supporting side plate.

[0033] An auxiliary machining fixture was designed for a specific cast aluminum shell structure, which accurately positions the workpiece 7, ensuring the dimensional accuracy of the workpiece 7.

[0034] The positioning component 2 includes a positioning sleeve 20 and a positioning head 21 that is slidably connected to the positioning sleeve 20 and cooperates with the workpiece 7. The positioning sleeve 20 has a cavity 200 for placing an elastic element 23. The positioning head 21 is a mushroom-shaped cone. The elastic element 23 is specifically a spring.

[0035] By employing a clamping assembly 3 and a limiting assembly on the base plate 1 to restrict the longitudinal and horizontal degrees of freedom of the workpiece 7, the machining quality of the workpiece 7 is guaranteed during CNC machining. The positioning assembly 2 consists of a mutually sliding positioning sleeve 20 and a positioning head 21, which cooperate with the hole at the bottom of the workpiece 7 to prevent the workpiece 7 from shifting. Because the positioning head 21 has a mushroom-shaped conical design, when it engages with the positioning hole 71 of the workpiece 7, the elastic element 23 causes the positioning head 21 to float up and down, making it highly adaptable to different sizes of the inner diameter of the positioning hole 71 of the workpiece 7, and ensuring accurate positioning.

[0036] The positioning sleeve 20 has a plug-in rod 201 at its bottom. The positioning sleeve 20 is detachable and is threadedly connected to the base plate 1 via the plug-in rod 201.

[0037] To further enhance the stability of both, several fastening through holes 202 are evenly distributed on the positioning seat sleeve 20, which can be fastened with screws.

[0038] As shown in Figure 1, the free end of the telescopic component 40 is connected to a limiting block 400, and support pins 410 are symmetrically arranged on the inner side of the support side plate 41. The telescopic component 40 can be a telescopic cylinder. Under the action of the telescopic cylinder, the limiting block 400 moves toward the side ear 70 of the workpiece 7, clamping the workpiece 7 and restricting the horizontal degree of freedom of the workpiece 7.

[0039] In this embodiment, four clamping components 3 are provided and symmetrically distributed on both sides of the positioning component 2. More clamping components 3 can also be provided.

[0040] The clamping assembly 3 includes a cylinder, a clamping claw 30 hinged to the free end of the cylinder, and a linkage mechanism 31. The clamping claw 30, under the action of the connecting mechanism and the cylinder, rotates and abuts against the upper end of the side lug 70. This direct clamping of the side lug 70 ensures greater stability of the workpiece 7 during the drilling process.

[0041] This fixture not only includes the positioning component 2, but also has ear supports 5 connected to the upper end of the base plate 1, which are arranged on both sides of the positioning component 2. The two ear supports 5, together with the positioning component 2, form a support at least three points, so that the workpiece 7 is prevented from tilting and shaking during processing. After the workpiece 7 is placed, the side ears 70 are in contact with the upper end of the ear supports 5.

[0042] At least one set of lifting rings 10 is also connected to the upper end of the substrate 1. The purpose of setting the lifting rings 10 is to facilitate the movement of the tooling, and the multiple lifting rings 10 can ensure the smoothness of the movement.

[0043] In addition, at least one pair of spring support pins 6 are connected to the base plate 1. Since the workpiece 7 is an aluminum housing, such as a gearbox housing or a motorcycle chain guard, and due to its irregular shape, it requires support pins 6 for maintenance during processing.

[0044] For stability, a spring support pin 6 is installed at the part of the workpiece 7 that is suspended in the air to provide support force. The spring support pin 6 can adapt to the height of the workpiece 7 within a certain range.

[0045] The aforementioned clamping component 3 is prior art. For specific structure and connection methods, please refer to the technical solutions mentioned in existing relevant technical documents. The aforementioned structure is not within the protection scope of this application.

[0046] The above connection method can be implemented using existing technology and is easy to implement. It is not within the protection scope of this application. Therefore, it has at least the beneficial effects brought about by the technical solution of the above embodiments, and will not be described in detail here.

[0047] The above are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A CNC machining fixture for aluminum cast machine housing parts, characterized in that, include: substrate(1); Positioning component (2) is connected to the base plate (1) and is used for mounting the workpiece; The clamping assembly (3) is disposed outside the positioning assembly (2) and is used to clamp the side ears of the workpiece so as to fix the workpiece in the vertical direction; A limiting component is connected to the base plate (1) to fix the workpiece in the horizontal direction. The limiting component includes telescopic members (40) respectively disposed on both sides of the positioning component (2) and a supporting side plate (41). The positioning component (2) includes a positioning seat (20) and a positioning head (21) that is slidably connected to the positioning seat (20) and cooperates with the workpiece. The positioning seat (20) has a cavity (200) for placing an elastic element (23), and the positioning head (21) is a mushroom-shaped cone.

2. The CNC machining fixture for aluminum casting machine housings according to claim 1, characterized in that: The bottom of the positioning seat (20) is provided with a plug rod (201), which is threadedly connected to the base plate (1).

3. The CNC machining fixture for aluminum casting machine housings according to claim 1 or 2, characterized in that: The positioning sleeve (20) has several fastening through holes (202) evenly distributed on it.

4. The CNC machining fixture for aluminum casting machine housings according to claim 1, characterized in that: The free end of the telescopic component (40) is connected to a limiting block (400), and the inner side of the supporting side plate (41) is symmetrically provided with support nails (410).

5. The CNC machining fixture for aluminum casting machine housings according to claim 1, characterized in that: At least four clamping components (3) are provided and are symmetrically distributed on both sides of the positioning component (2).

6. The CNC machining fixture for aluminum casting machine housings according to claim 5, characterized in that: The clamping assembly (3) includes a cylinder, a clamping claw (30) hinged to the free end of the cylinder, and a linkage mechanism (31).

7. The CNC machining fixture for aluminum casting machine housings according to claim 1, characterized in that: The upper end of the substrate (1) is connected to ear support (5) disposed on both sides of the positioning component (2).

8. The CNC machining fixture for aluminum casting machine housings according to claim 1, characterized in that: At least one set of lifting rings (10) are also connected to the upper end of the substrate (1).

9. The CNC machining fixture for aluminum casting machine housings according to claim 1, characterized in that: At least one pair of spring support pins (6) are connected to the substrate (1).

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