An apparatus for extrusion casting an aluminum alloy automobile transmission case

Abstract

This utility model relates to the field of extrusion casting technology for automotive parts, and proposes an extrusion casting device for aluminum alloy automotive gearbox housings. The design includes a main assembly, a cutting assembly, a ring-shaped rotating assembly, and a chip-blowing assembly. The main assembly consists of a main sleeve, a secondary sleeve, and a protective cover. The ring-shaped rotating assembly drives a worm gear pair via a forward and reverse motor, which in turn meshes with a gear plate and a gear groove assembly, causing the inner ring seat and the upper support fixed thereon to rotate 360 ​​degrees horizontally. This allows the cutting assembly, mounted in the middle of the upper support, to perform multi-angle contour cutting to meet the trimming requirements of the complex contours of the gearbox housing. The chip-blowing assembly is driven by a motor that rotates a fan blade, blowing air through an annular ventilation slot to remove debris simultaneously with cutting, ensuring processing cleanliness and workpiece surface quality. This utility model solves the problems of single cutting paths and debris contamination in existing technologies, significantly improving trimming accuracy and automation levels.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts extrusion casting technology, specifically to an extrusion casting apparatus for an aluminum alloy automotive gearbox housing. Background Technology

[0002] The gearbox housing is a critical component of the gearbox, playing a vital role in supporting and securing internal gears, shafts, and other parts, as well as bearing and transmitting loads. It needs to possess good strength, rigidity, and toughness to ensure stable operation under complex conditions, while also maintaining good sealing to prevent lubricant leakage. Common gearbox housing materials include aluminum alloys and cast iron, with aluminum alloys becoming increasingly widely used due to their lightweight and good heat dissipation. Extrusion casting is an advanced forming process with significant advantages in manufacturing gearbox housings. This process involves directly injecting liquid or semi-solid metal into an open mold cavity, followed by applying high pressure through a punch, causing the metal to crystallize and solidify under pressure. Compared to traditional casting, extrusion casting effectively reduces defects such as porosity and shrinkage in the casting, improving density and mechanical properties; it also improves metal flowability, resulting in more uniform housing wall thickness and improved dimensional accuracy; and it can achieve near-net-shape forming, reducing subsequent machining allowances, lowering production costs, and increasing production efficiency.

[0003] CN218836035U discloses a horizontal extrusion casting machine, including a casting machine body. The casting machine body has an internal liquid tank. A mold is located at the lower end of the casting machine body, and a mold groove is located inside the mold. A sealing structure is located at the right end of the casting machine body, including a sealing cylinder and a sealing plate. The sealing cylinder is located at the upper right end of the casting machine body, and the lower end of the sealing cylinder is connected to the sealing plate via a cylinder rod. The lower end of the sealing plate contacts the casting machine body. An ejector device is located at the lower end of the casting machine body. This horizontal extrusion casting machine is equipped with an ejector block and a pusher block, which can push the formed metal part ejected from the liquid tank to the right and slide it into the casting machine body, thereby achieving automatic part removal. Simultaneously, the casting machine body is equipped with a cutting blade, which can cut the upper end of the formed metal part flat. It is easy to operate, has a high degree of automation, and is convenient to use.

[0004] The problem with the above-mentioned horizontal extrusion casting machine is that:

[0005] The cutting function is limited and cannot adapt to complex contours: the device's "cutting blade" is mounted on a "sliding plate" that can only move in a straight line, and its cutting path is a single straight line. This makes it impossible to effectively contour and trim workpieces with complex contours, multiple bosses, or non-planar flash, requiring additional manual or machine tool processing, resulting in low efficiency.

[0006] The lack of a chip removal function affects processing quality and the environment: When cutting the flash of castings, this device generates a large amount of metal chips. These chips accumulate on the workpiece surface, mold cavity, and equipment working area, which may not only scratch the surface of the processed workpiece and affect product quality, but also pollute the working environment, requiring frequent shutdowns for cleaning and reducing the equipment's continuous operation capability. Utility Model Content

[0007] The purpose of this invention is to provide an extrusion casting device for aluminum alloy automotive gearbox housings, which solves the problems of existing technologies having limited cutting functions, being unable to adapt to complex contours, and lacking chip handling capabilities.

[0008] The technical solution of this utility model is as follows: A stamping casting device for an aluminum alloy automotive gearbox housing includes a main body assembly and a cutting assembly disposed on the upper part of the main body assembly. The main body assembly includes a main sleeve and a secondary seat fixedly connected to the side of the main sleeve. A protective cover is fixedly connected to the top of the secondary seat. The main sleeve and the secondary seat are internally connected. An annular rotating assembly is disposed at the main sleeve and the secondary seat. The annular rotating assembly includes an upper support seat that can drive the cutting assembly to realize the cutting angle conversion. On both sides of the upper support seat, a chip blowing assembly that can blow away debris during cutting is also disposed.

[0009] Preferably, the annular rotating assembly further includes a support frame, with two sets of support frames symmetrically fixedly connected to the top of the sub-seat. The annular rotating assembly also includes a main rotating shaft, which is rotatably connected to the middle of the two sets of support frames, and a worm gear is fixedly connected to the outside of the main rotating shaft.

[0010] Preferably, the annular rotating assembly further includes a forward and reverse motor, which is fixedly installed on the outside of a set of support frames, and the output end of the forward and reverse motor is fixedly connected to the main rotating shaft.

[0011] Preferably, the annular rotating assembly further includes a secondary rotating shaft, which is rotatably connected to the secondary seat. A worm gear is fixedly connected to the upper outer side of the secondary rotating shaft. The worm gear is in contact with and meshes with the worm. The annular rotating assembly also includes a geared disc, which is fixedly connected to the lower outer side of the secondary rotating shaft.

[0012] Preferably, the annular rotating assembly further includes an inner ring seat, which is rotatably connected to the inner side of the main sleeve seat. The annular rotating assembly also includes a toothed groove group, which is distributed on the outer side of the inner ring seat. The toothed groove group contacts the toothed disc and is meshed and rotatably connected. The top of the inner ring seat is fixedly connected to the upper support seat.

[0013] Preferably, the cutting assembly is fixedly installed in the middle of the upper support.

[0014] Preferably, the chip blowing assembly includes a fan base, which is fixedly connected to the upper support. The fan base has a ventilation slot that runs through it in an annular shape. The chip blowing assembly also includes a drive motor, which is fixedly installed in the middle of the fan base. An output shaft is fixedly connected to the output end of the drive motor, and fan blades are fixedly connected to the outer side of the output shaft in an annular shape.

[0015] This utility model adopts the above technical solution and has the following beneficial effects compared with the prior art: Innovation advantage 1: It has multi-angle cutting capability and can handle complex flash.

[0016] Improvement: This patent innovatively designs a ring-shaped rotating assembly. This assembly, after a single-stage reduction and reversal via a "forward and reverse motor → worm gear → worm wheel," then through the meshing of a "gear disc → gear set," ultimately drives the "inner ring seat" and its "upper support" to rotate 360 ​​degrees horizontally. The cutting assembly is fixedly installed in the middle of the upper support, thus achieving the ability to perform rotary cutting around the center of the workpiece.

[0017] Addressing the limitations of existing cutting tools: This design completely overcomes the limitation of existing cutting tools only being able to be cut in straight lines. Operators can precisely adjust the cutting head to any desired angle by controlling the forward and reverse motors, enabling accurate trimming of burrs and excess material around the gearbox housing in different directions. This achieves multi-angle, contour cutting, significantly reducing subsequent processing allowances and improving trimming accuracy and efficiency.

[0018] Second innovative advantage: Integrated active chip removal system to ensure processing cleanliness.

[0019] Improvement: This patent integrates chip blowing components on both sides of the cutting assembly. These components are driven by an independent drive motor, which rotates the fan blades at high speed. The resulting airflow is blown out through ventilation slots around the fan base.

[0020] Addressing the shortcomings of existing cutting materials: This design directly addresses the problem of excessive metal debris in existing cutting materials. Simultaneously with cutting, the chip-blowing assembly activates, generating a directional airflow that instantly and effectively disperses metal debris from the workpiece surface and processing area, preventing debris accumulation and adhesion. This not only protects the workpiece surface quality but also keeps the mold and working area clean, extends the continuous operating time of the equipment, and improves the operating environment. 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 schematic diagram of the overall device of this utility model;

[0023] Figure 2This is a schematic diagram of the worm and worm wheel of this utility model;

[0024] Figure 3 This is a schematic diagram of the inner ring seat and the upper support seat of this utility model;

[0025] Figure 4 This is a schematic diagram of the chip blowing assembly of this utility model;

[0026] In the diagram: 1. Main component; 11. Main sleeve; 111. Subsidiary seat; 12. Protective cover; 2. Cutting component; 3. Circular rotating component; 31. Support frame; 32. Forward and reverse motors; 33. Main shaft; 331. Worm; 34. Subsidiary shaft; 341. Worm wheel; 342. Gear plate; 35. Inner ring seat; 351. Upper support seat; 352. Gear set; 4. Chip blowing component; 41. Fan seat; 411. Ventilation slot; 42. Drive motor; 421. Output shaft; 422. Fan blade. Detailed Implementation

[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0028] For implementation details, please refer to [link / reference]. Figures 1-4 An extrusion casting device for an aluminum alloy automotive gearbox housing includes a main component 1 and a cutting component 2 disposed on the upper part of the main component 1. The main component 1 includes a main sleeve 11 and a secondary seat 111 fixedly connected to the side of the main sleeve 11. A protective cover 12 is fixedly connected to the top of the secondary seat 111. The main sleeve 11 and the secondary seat 111 are internally connected. An annular rotating component 3 is disposed at the main sleeve 11 and the secondary seat 111. The annular rotating component 3 includes an upper support 351 that can drive the cutting component 2 to realize the cutting angle conversion. On both sides of the upper support 351, a chip blowing component 4 that can blow away debris during cutting is also disposed.

[0029] This design solves the problem of trimming complex contours with a 360-degree rotating cutting platform and solves the problem of processing debris contamination with an integrated chip blowing system.

[0030] The annular rotating assembly 3 also includes a support frame 31, with two sets of support frames 31 symmetrically fixedly connected to the top of the sub-base 111. The annular rotating assembly 3 also includes a main rotating shaft 33, which is rotatably connected to the middle of the two sets of support frames 31. A worm gear 331 is fixedly connected to the outside of the main rotating shaft 33.

[0031] The annular rotating assembly 3 also includes a forward and reverse motor 32, which is fixedly installed on the outside of a set of support frames 31, and the output end of the forward and reverse motor 32 is fixedly connected to the main rotating shaft 33.

[0032] The annular rotating assembly 3 also includes a secondary rotating shaft 34, which is rotatably connected to the secondary seat 111. A worm gear 341 is fixedly connected to the upper outer side of the secondary rotating shaft 34. The worm gear 341 is in contact with the worm 331 and is meshed and rotatably connected. The annular rotating assembly 3 also includes a gear disk 342, which is fixedly connected to the lower outer side of the secondary rotating shaft 34.

[0033] The annular rotating assembly 3 also includes an inner ring seat 35, which is rotatably connected to the inner side of the main sleeve seat 11. The annular rotating assembly 3 also includes a toothed groove group 352, which is distributed on the outer side of the inner ring seat 35. The toothed groove group 352 is in contact with the toothed disc 342 and is meshed and rotatably connected. The top of the inner ring seat 35 is fixedly connected to the upper support seat 351.

[0034] The cutting component 2 is fixedly installed in the middle of the upper support 351.

[0035] The chip blowing assembly 4 includes a fan base 41, which is fixedly connected to the upper support 351. The fan base 41 has a ventilation slot 411 that runs through it in an annular shape. The chip blowing assembly 4 also includes a drive motor 42, which is fixedly installed in the middle of the fan base 41. The output end of the drive motor 42 is fixedly connected to an output shaft 421, and a fan blade 422 is fixedly connected to the outer side of the output shaft 421 in an annular shape.

[0036] Working principle:

[0037] Workers can fix the main component 1 in the liquid tank. When the metal part in the liquid tank is demolded and moved to the main component 1, workers can use the cutting component 2 to perform a horizontal cutting on the upper end of the metal part, thereby keeping the upper end of the metal part neat.

[0038] Specifically, by starting the forward and reverse motor 32, the main rotating shaft 33 and the worm 331 can be driven to rotate between the two sets of support frames 31. At this time, under the meshing action of the worm 331 and the worm wheel 341, the auxiliary rotating shaft 34 located inside the worm wheel 341 will rotate synchronously. At this time, the gear disk 342 fixed on the outer side of the bottom of the auxiliary rotating shaft 34 will rotate synchronously. The tooth groove group 352 located inside the inner ring seat 35 will rotate horizontally within the support frame 31 under the meshing action of the gear disk 342. This design can adjust the horizontal cutting angle of the cutting component 2, and the self-locking design of the worm 331 and the worm wheel 341 can effectively prevent the inner ring seat 35 from loosening after rotating to the target angle.

[0039] At the same time, during the cutting process of the metal part by the cutting component 2, the drive motor 42 can be started simultaneously, which will drive the output shaft 421 and the fan blade 422 to rotate. The fan blade 422 can quickly blow away the metal cutting debris from the main component 1.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A stamping casting apparatus for an aluminum alloy automotive gearbox housing, comprising a main body assembly (1) and a cutting assembly (2) disposed on the upper part of the main body assembly (1), characterized in that, The main component (1) includes a main sleeve (11) and a secondary seat (111) fixedly connected to the side of the main sleeve (11). A protective cover (12) is fixedly connected to the top of the secondary seat (111). The main sleeve (11) and the secondary seat (111) are internally connected. A ring rotating component (3) is provided at the main sleeve (11) and the secondary seat (111). The ring rotating component (3) includes an upper support (351) that can drive the cutting component (2) to realize the cutting angle conversion. The upper support (351) is also provided on both sides of the cutting component (2) with a chip blowing component (4) that can blow away debris while cutting.

2. The squeeze casting apparatus for an aluminum alloy automobile transmission case according to claim 1, characterized by The annular rotating assembly (3) also includes a support frame (31), and two sets of the support frames (31) are symmetrically fixedly connected to the top of the sub-seat (111). The annular rotating assembly (3) also includes a main rotating shaft (33), which is rotatably connected to the middle of the two sets of support frames (31). A worm gear (331) is fixedly connected to the outside of the main rotating shaft (33).

3. The extrusion casting apparatus for an aluminum alloy automotive gearbox housing according to claim 2, characterized in that, The annular rotating assembly (3) also includes a forward and reverse motor (32), which is fixedly installed on the outside of a set of support frames (31), and the output end of the forward and reverse motor (32) is fixedly connected to the main rotating shaft (33).

4. The apparatus for squeeze casting an aluminum alloy automobile transmission case according to claim 2 or 3, characterized by The annular rotating assembly (3) also includes a secondary rotating shaft (34), which is rotatably connected to the secondary seat (111). A worm gear (341) is fixedly connected to the upper outer side of the secondary rotating shaft (34). The worm gear (341) is in contact with the worm (331) and is meshed and rotatably connected. The annular rotating assembly (3) also includes a gear disk (342), which is fixedly connected to the lower outer side of the secondary rotating shaft (34).

5. The extrusion casting apparatus for an aluminum alloy automotive gearbox housing according to claim 4, characterized in that, The annular rotating assembly (3) also includes an inner ring seat (35), which is rotatably connected to the inner side of the main sleeve seat (11). The annular rotating assembly (3) also includes a toothed groove group (352), which is distributed on the outer side of the inner ring seat (35). The toothed groove group (352) is in contact with the toothed disc (342) and is meshed and rotatably connected. The top of the inner ring seat (35) is fixedly connected to the upper support seat (351).

6. The squeeze casting apparatus for an aluminum alloy automobile transmission case shell according to claim 1 or 5, characterized by The cutting component (2) is fixedly installed in the middle of the upper support (351).

7. The apparatus according to claim 1 or 5, wherein The chip blowing assembly (4) includes a fan base (41), which is fixedly connected to the upper support (351). The fan base (41) has a ventilation slot (411) that runs through it in an annular shape. The chip blowing assembly (4) also includes a drive motor (42), which is fixedly installed in the middle of the fan base (41). The output end of the drive motor (42) is fixedly connected to an output shaft (421), and a fan blade (422) is fixedly connected to the outer side of the output shaft (421) in an annular shape.

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