A hub mechanical clamping arm pouring mold

Abstract

The utility model relates to the technical field of wheel hub casting production, and disclose a kind of wheel hub mechanical arm clamping pouring mold, it includes bottom plate, the outer profile of corresponding mechanical arm is provided with forming groove on the bottom plate, detachably connected with cover plate on forming groove, the pouring gate that is connected with forming groove is provided on the cover plate, as the pouring inlet of aluminium liquid, riser that is connected with forming cavity is also provided on the cover plate, for the exhaust and overflow of mould Supplement, the pouring gate on the cover plate is provided with two, respectively arranged in the length direction of corresponding forming groove two ends, the riser is positioned away from forming groove, and the riser is connected with forming groove by inner gate the inner gate is herringbone, and the inner gate of herringbone is connected with the two sides of forming groove length direction respectively.The utility model replaces the manufacturing mode of traditional mechanical arm clamping by casting process, effectively improves the problems of material waste, high process complexity and structure performance limitation existing in traditional manufacturing mode.

Description

Technical Field

[0001] This utility model relates to the field of wheel hub casting production technology, and in particular to a wheel hub mechanical clamping arm casting mold. Background Technology

[0002] On the low-pressure casting production line for wheel hubs, the mechanical clamping arm, as a key clamping component, needs to frequently clamp high-temperature aluminum alloy wheel hub blanks and withstand cyclic mechanical loads. Therefore, it is required to possess both lightweight and high-strength characteristics. Currently, as shown in the attached... Figure 1 As shown, the industry generally uses the following process to manufacture mechanical clamping arms: raw material procurement, using pre-rolled aluminum alloy plates as raw materials; blank preparation, cutting or stamping aluminum plates into blanks that approximate the shape of clamping arms; machining and forming, performing multiple machining processes such as milling, drilling, and chamfering on the blanks to finally form mechanical clamping arms.

[0003] However, this traditional manufacturing process has significant drawbacks:

[0004] Significant material waste: A large amount of scrap is generated during the blank cutting process (the loss rate is usually 30%-40%), and aluminum plates need to be reserved for processing allowance (about 5-8mm per piece), which further reduces the material utilization rate;

[0005] High process complexity: It relies on the coordinated operation of multiple machines such as CNC milling machines and precision lathes, resulting in long processing cycles and high energy consumption costs;

[0006] Structural performance limitations: Anisotropy caused by machining weakens the overall strength of the clamping arm, especially in stress concentration areas (such as hinge holes and the root of the jaws) where fatigue cracks are prone to occur.

[0007] To address the aforementioned issues, there is an urgent need to develop a manufacturing process that can achieve near-net-shape forming of mechanical grippers, thereby reducing production costs while improving the mechanical properties of the components. Utility Model Content

[0008] The purpose of this invention is to address the above-mentioned problems by providing a casting mold for a wheel hub mechanical clamping arm, which manufactures the mechanical clamping arm through a casting process, thereby solving the problems of serious material waste, high process complexity, and limited structural performance in traditional manufacturing processes.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0010] A casting mold for a wheel hub mechanical clamping arm includes a base plate. A forming groove is formed on the base plate corresponding to the outer contour of the mechanical clamping arm. A cover plate is detachably connected to the forming groove. A pouring port communicating with the forming groove is provided on the cover plate as an inlet for pouring molten aluminum. A riser communicating with the forming cavity is also provided on the cover plate for venting and overflow compensation of the mold.

[0011] Preferably, the cover plate has two pouring ports, which are respectively located at both ends of the corresponding molding groove length direction.

[0012] Preferably, the riser is located away from the molding groove, and the riser is connected to the molding groove through an ingate.

[0013] Preferably, the ingate is herringbone shaped, and the herringbone ingate connects to both sides of the molding groove along its length.

[0014] Preferably, the cover plate has a vent hole that penetrates the cover plate and is connected to the molding groove for venting during the casting process.

[0015] Preferably, the base plate is provided with a positioning structure corresponding to the cover plate for the alignment connection between the cover plate and the base plate. The positioning structure includes a positioning block provided on the side of the base plate. The upper end of the positioning block is higher than the upper surface of the base plate, so that the cover plate can abut against the positioning block to achieve the positioning of the cover plate.

[0016] Preferably, the positioning structure further includes a positioning post for assembling the cover plate with the positioning post, wherein the cover plate has a positioning slot corresponding to the positioning post, and the positioning slot is inserted into the positioning post.

[0017] Preferably, the positioning post has an external thread, and a locking nut is screwed onto the external thread for pressing the cover plate and the base plate together.

[0018] Preferably, a recessed groove is provided in the blank position of the base plate to reduce the ineffective contact area between the cover plate and the base plate.

[0019] Preferably, the base plate has two forming grooves and two corresponding cover plates.

[0020] The beneficial effects of this utility model are as follows: This embodiment replaces the traditional mechanical clamping arm manufacturing method with a casting process, which effectively improves the problems of serious material waste, high process complexity and limited structural performance of the traditional manufacturing method. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 This is a flowchart of the manufacturing process for a traditional mechanical gripper.

[0023] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0024] Figure 3 for Figure 2 Exploded view.

[0025] In the diagram: 10--Base plate; 11--Molding groove; 12--Inner sprue; 13--Positioning block; 14--Positioning post; 15--Pressure lock nut; 16--Void relief groove; 20--Cover plate; 21--Gating gate; 22--Riser; 23--Vent hole; 24--Positioning slot. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] like Figure 2-3 As shown, a casting mold for a wheel hub mechanical clamping arm includes a base plate 10. A forming groove 11 is formed on the base plate 10 corresponding to the outer contour of the mechanical clamping arm. A cover plate 20 is detachably connected to the forming groove 11. The cover plate 20 has a pouring port 21 communicating with the forming groove 11, serving as the pouring port for molten aluminum. The cover plate 20 also has a riser 22 communicating with the forming cavity for venting and overflow compensation of the mold. In use, the cover plate 20 is placed on the base plate 10, covering the forming groove 11, forming a sealed casting cavity. Molten aluminum is poured into the casting cavity through the pouring port 21, and the gases in the cavity and molten aluminum are discharged through the riser 22, completing the filling process. After a certain period of cooling and solidification, a mechanical clamping arm casting blank is obtained. The blank undergoes minimal machining to produce the finished mechanical clamping arm. This embodiment replaces the traditional manufacturing method of mechanical clamping arms with a casting process, effectively improving the problems of serious material waste, high process complexity, and limited structural performance inherent in traditional manufacturing methods.

[0028] In a preferred embodiment, the cover plate 20 has two pouring ports 21, respectively located at both ends of the corresponding forming groove 11 along its length. During casting, molten aluminum is poured simultaneously through both pouring ports 21, shortening the flow path of the molten aluminum and avoiding defects such as cold shuts and undercasting caused by a sudden drop in temperature at the front end. This also reduces the temperature gradient and improves the uniformity of the molten aluminum filling. Furthermore, the design of two pouring ports 21 allows for simultaneous feeding at both ends, forming a bidirectional solidification gradient, which effectively improves casting shrinkage defects and increases casting density.

[0029] Preferably, the riser 22 is located away from the forming groove 11, and the riser 22 is connected to the forming groove 11 through the ingate 12. During casting, the front-end cold aluminum liquid and gas will be discharged through the ingate 12 and then through the riser 22. After casting is completed, the ingate 12 will be removed as scrap to ensure the casting quality of the mechanical clamp arm blank.

[0030] Preferably, the ingate 12 is herringbone shaped, and the herringbone ingate 12 connects to both sides of the molding tank 11 along its length. During pouring, the molten aluminum from both sides of the molding tank 11 will be collected at the riser 22 through the branches of the herringbone ingate 12, which facilitates the discharge of cold molten aluminum and gas from both sides of the molding tank 11.

[0031] Preferably, the cover plate 20 is provided with an exhaust hole 23 that penetrates the cover plate 20. The exhaust hole 23 is connected to the forming groove 11 and is used for venting during the casting process to improve venting efficiency and facilitate the filling of aluminum liquid.

[0032] Preferably, a positioning structure is provided on the base plate 10 corresponding to the cover plate 20 for alignment and connection between the cover plate 20 and the base plate 10. The positioning structure includes a positioning block 13 disposed on the side of the base plate 10, the upper end of the positioning block 13 being higher than the upper surface of the base plate 10, so that the cover plate 20 can abut against the positioning block 13 to achieve positioning of the cover plate 20.

[0033] The positioning structure also includes a positioning post 14 for positioning assembly of the cover plate 20 and the positioning post 14. The cover plate 20 has a positioning slot 24 corresponding to the positioning post 14, and the positioning slot 24 is inserted into the positioning post 14.

[0034] The positioning post 14 has an external thread, and a clamping lock nut 15 is screwed onto the external thread for clamping connection between the cover plate 20 and the base plate 10.

[0035] Preferably, a recessed clearance groove 16 is provided in the blank position of the base plate 10, which is recessed in the upper end surface of the base plate 10, so as to reduce the ineffective contact area between the cover plate 20 and the base plate 10 and alleviate the problem of the contact sealing performance between the cover plate 20 and the base plate 10 affected by the flatness deviation.

[0036] Preferably, the base plate 10 has two forming grooves 11 and two cover plates 20 are provided accordingly, which can complete the casting of a pair of mechanical clamping arms at one time, improve manufacturing efficiency and save mold costs.

[0037] The above-disclosed embodiments are merely specific examples of this utility model, but this utility model is not limited thereto. For those skilled in the art, any modifications made without departing from the principle of this utility model should be considered as protected by this utility model.

Claims

1. A mechanical wheel hub clamp arm casting mold, characterized by: Including bottom plate (10), the outer line profile of corresponding mechanical arm is provided with forming groove (11) on the bottom plate (10), and the cover plate (20) is detachably connected on the forming groove (11), the pouring gate (21) is arranged on the cover plate (20) and communicated with the forming groove (11), and the pouring gate (21) is used as the pouring inlet of aluminum liquid, and the riser (22) communicated with the forming cavity is arranged on the cover plate (20) for the exhaust and overflow of the mold.

2. A mechanical wheel hub clamp arm slipform according to claim 1, wherein: The pouring gate (21) on the cover plate (20) is provided with two, which are respectively arranged at the two ends of the length direction of the forming groove (11).

3. A mechanical wheel hub clamp arm slipform according to claim 1, wherein: The riser (22) is arranged away from the forming groove (11), and the riser (22) is communicated with the forming groove (11) through the inner gate (12).

4. A mechanical wheel hub clamp arm slipform according to claim 3, wherein: The inner gate (12) is in the shape of a herringbone and is communicated with the two sides of the length direction of the forming groove (11).

5. A mechanical wheel hub clamp arm slipform according to claim 1, wherein: The cover plate (20) is provided with exhaust hole (23) penetrating through the cover plate (20), and the exhaust hole (23) is communicated with the forming groove (11) for exhaust during pouring.

6. A mechanical wheel hub clamp arm slipform according to claim 1, wherein: The bottom plate (10) is provided with positioning structure corresponding to the cover plate (20) for the alignment connection of the cover plate (20) and the bottom plate (10), and the positioning structure comprises positioning block (13) arranged on the side of the bottom plate (10), the upper end of the positioning block (13) is higher than the upper end surface of the bottom plate (10), so that the cover plate (20) can abut on the positioning block (13) to realize the positioning of the cover plate (20).

7. A mechanical wheel hub clamp arm slipform according to claim 6, wherein: The positioning structure further comprises positioning column (14) for positioning assembly of the cover plate (20), and the cover plate (20) is provided with positioning notch (24) corresponding to the positioning column (14), and the positioning notch (24) is inserted and matched with the positioning column (14).

8. A mechanical wheel hub clamp arm slipform according to claim 7, wherein: The positioning column (14) is provided with external thread, and the compression lock nut (15) is screwed on the external thread for the compression connection of the cover plate (20) and the bottom plate (10).

9. A mechanical wheel hub clamp arm slipform according to claim 1, wherein: The blank position of the bottom plate (10) is provided with empty slot (16) recessed in the upper end surface of the bottom plate (10) to reduce the invalid contact area of the cover plate (20) and the bottom plate (10).

10. A mechanical wheel hub clamp arm slipform according to claim 1, wherein: The bottom plate (10) is provided with two forming grooves (11) and two cover plates (20) are arranged correspondingly.

Images