Aluminum alloy cylinder head shakeout fixture

Abstract

The utility model discloses an aluminium alloy cylinder cover shakeout clamp, including base, the outer fixedly connected with rubber board of base top, the top fixedly connected with buffer board of rubber board, the upper end of buffer board is provided with clamp main part, the recess is all seted up to the position of both sides of base top, the front end and rear end of the inside center of recess all are fixedly installed with slide rod. This aluminium alloy cylinder cover shakeout clamp, through the design of buffer board, rubber board, slide rod, sliding sleeve, spring, inclined plane block, steel ball, guide slot, damper, guide post and ball bearing, when the clamp bears shakeout machine vibration, steel ball rolls along the inclined surface of inclined plane block, pushes sliding sleeve and slides on slide rod horizontally, and then compresses spring, converts impact force into elastic potential energy, at the same time, the vertical displacement of buffer board is passed to damper through guide post, and the low friction guiding cooperation of damper and ball bearing in guide slot realizes the attenuation of vibration energy.

Description

Technical Field

[0001] This utility model relates to the technical field of cylinder head sand removal clamps, specifically an aluminum alloy cylinder head sand removal clamp. Background Technology

[0002] With the trend of lightweighting and high performance in the automotive industry, aluminum alloy cylinder heads are widely used in engine manufacturing due to their light weight and excellent thermal conductivity. In the production process, the sand removal process is a key step in separating castings from molding sand, and special fixtures are needed to stably position the cylinder head on the sand removal machine.

[0003] Existing aluminum alloy cylinder head sand removal fixtures generally lack effective buffering mechanisms. These fixtures cannot effectively attenuate the vibration energy generated by the sand removal machine, leading to the casting being subjected to long-term non-cyclic impact loads. This continuous vibration directly induces microscopic plastic deformation in the aluminum alloy cylinder head, causing stress concentration, especially in thin-walled structures, resulting in out-of-tolerance critical dimensions. Furthermore, the rigid connection method of existing fixtures is prone to structural fatigue under the cumulative effect of vibration, leading to positioning datum misalignment and requiring frequent manual correction, significantly reducing the continuous operation capability of the production line. Therefore, we propose an aluminum alloy cylinder head sand removal fixture. Utility Model Content

[0004] The purpose of this utility model is to provide an aluminum alloy cylinder head sand removal fixture to solve the problems mentioned in the background art. Existing aluminum alloy cylinder head sand removal fixtures generally lack an effective buffering mechanism, and the fixtures cannot attenuate the vibration energy generated by the sand removal machine in stages. This results in the casting being subjected to non-periodic impact loads for a long time. This continuous vibration will directly cause microscopic plastic deformation of the aluminum alloy cylinder head, especially in thin-walled structures, forming stress concentration and causing critical dimensions to exceed tolerances. At the same time, the rigid connection method of existing fixtures is prone to structural fatigue under the cumulative effect of vibration, resulting in the displacement of the positioning reference, requiring frequent manual correction, which significantly reduces the continuous operation capability of the production line.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an aluminum alloy cylinder head sand removal clamp, comprising a base, a rubber plate fixedly connected to the outer end of the top of the base, a buffer plate fixedly connected to the top of the rubber plate, a clamp body provided at the upper end of the buffer plate, grooves provided on both sides of the top of the base, a sliding rod fixedly installed at the front and rear ends of the center of the groove, a sliding sleeve slidably connected to the opposite side of the four sliding rods on both sides, a bevel block fixedly connected to the top of each pair of sliding sleeves, two ball seats fixedly connected to the center of the bottom of the buffer plate, steel balls rolledly installed at the lower ends of the two ball seats, a bevel block provided at the bottom of each of the two steel balls, springs sleeved on the surface of the four sliding rods, guide grooves provided at the four corners of the top of the base, guide posts fixedly connected to the upper ends of the four guide grooves respectively, dampers fixedly installed at the bottom of the four guide grooves, and ball bearings rolledly installed at the top of the guide grooves.

[0006] Compared with the prior art, the beneficial effects of this utility model are:

[0007] This aluminum alloy cylinder head sand removal fixture, through the design of a buffer plate, rubber plate, sliding rod, sliding sleeve, spring, inclined block, steel ball, guide groove, damper, guide column, and ball bearings, effectively solves the problem of insufficient buffering efficiency of traditional fixtures, and improves the dimensional accuracy of castings and the reliability of production line operations. When the fixture is subjected to the vibration of the sand removal machine, the steel ball rolls along the inclined surface of the inclined block, pushing the sliding sleeve to slide horizontally on the sliding rod, thereby compressing the spring and converting the impact force into elastic potential energy. At the same time, the vertical displacement of the buffer plate is transmitted to the damper through the guide column. The low-friction guiding cooperation between the damper and the ball bearings in the guide groove achieves the attenuation of vibration energy. This not only avoids the deformation caused by stress concentration in the thin-walled structure of the aluminum alloy cylinder head, but also reduces the wear of moving parts by molding sand impurities through the dustproof function of the rubber plate. It effectively solves the problem of insufficient buffering efficiency of traditional fixtures and improves the dimensional accuracy of castings and the reliability of production line operations. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model;

[0009] Figure 2 This utility model Figure 1 A magnified view of part A in the diagram;

[0010] Figure 3 This is a three-dimensional view of the inclined block of this utility model;

[0011] Figure 4 This is the main view of the structure of this utility model.

[0012] In the diagram: 1. Base; 2. Buffer plate; 3. Fixture body; 4. Support column; 5. Rubber plate; 6. Groove; 7. Slide rod; 8. Sliding sleeve; 9. Spring; 10. Inclined block; 11. Slide groove; 12. Slider; 13. Ball seat; 14. Steel ball; 15. Guide groove; 16. Damper; 17. Guide column; 18. Ball bearing. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-4 This utility model provides a technical solution: an aluminum alloy cylinder head sand removal clamp, including a base 1, a rubber plate 5 fixedly connected to the outer end of the top of the base 1, a buffer plate 2 fixedly connected to the top of the rubber plate 5, a clamp body 3 provided at the upper end of the buffer plate 2, grooves 6 are provided on both sides of the top of the base 1, and sliding rods 7 are fixedly installed at the front and rear ends of the center of the grooves 6. Sliding sleeves 8 are slidably connected to the opposite sides of the four sliding rods 7 on both sides, and inclined blocks 10 are fixedly connected to the top of each pair of sliding sleeves 8. Two ball seats 13 are fixedly connected to the center of the bottom of the buffer plate 2. Steel balls 14 are rolledly installed at the lower end of the two ball seats 13. Inclined blocks 10 are provided at the bottom of the two steel balls 14. Springs 9 are sleeved on the surface of the four slide rods 7. Guide grooves 15 are opened at the four corners of the top of the base 1. Guide posts 17 are fixedly connected to the upper ends of the four guide grooves 15 respectively. Dampers 16 are fixedly installed at the bottom of the four guide grooves 15. Ball bearings 18 are rolledly installed at the top position of the guide grooves 15.

[0015] The bottom of the fixture body 3 is fixedly connected with a support column 4. There are several support columns 4. The lower ends of the support columns 4 are fixedly connected to the top of the buffer plate 2. The support columns 4 distribute the load of the fixture body 3 evenly to the buffer plate 2 through multiple points, avoiding local stress concentration and improving the overall structural rigidity.

[0016] The bottoms of the two steel balls 14 are in contact with the tops of the inclined surfaces on opposite sides of the two inclined blocks 10. One end of the spring 9 is fixedly connected to the inner wall of the groove 6, and the other end of the spring 9 is fixedly connected to one side of the inclined block 10. The steel balls 14 roll on the inclined surface of the inclined block 10, converting the local pressure in the vertical direction into a horizontal component force, pushing the inclined block 10 to slide along the slide rod 7. The inclined block 10 and the spring 9 cooperate to form an elastic buffer system. The spring 9 absorbs the impact energy through compression, preventing the thin-walled structure of the aluminum alloy cylinder head from deforming due to stress concentration.

[0017] The front and rear ends of the two inclined blocks 10 are fixedly connected to each other. The top of the base 1 is provided with grooves 11 corresponding to the lower ends of the four sliders 12. The bottom of the four sliders 12 extends into the interior of the four grooves 11 and slides in connection with the inner wall of the grooves 11. The cooperation between the sliders 12 and the grooves 11 ensures the stability of the horizontal movement of the inclined blocks 10 and prevents the buffer failure caused by sliding deviation.

[0018] The bottom of each of the four guide posts 17 extends into the interior of the four guide grooves 15 and is fixedly connected to the top of each of the four dampers 16.

[0019] The number of balls 18 is set to a certain extent, and the surface of each ball 18 is in contact with the outer wall of the guide post 17. The vertical displacement of the buffer plate 2 is transmitted to the damper 16 through the guide post 17. The vertical connection design between the guide post 17 and the damper 16 attenuates the vibration energy during the guiding process. The balls 18 in the guide groove 15 are in contact with the outer wall of the guide post 17. Rolling friction replaces sliding friction, reducing motion resistance and ensuring the stability of the force in the vertical direction.

[0020] A mounting plate is fixedly connected to the bottom of the base 1. Several mounting holes are opened on the top of the mounting plate, and the base is fixedly connected to the sand removal machine through the mounting holes.

[0021] When the sand removal machine vibrates, the fixture body 3 transmits the impact force to the buffer plate 2 through the support column 4. At this time, the vertical displacement of the buffer plate 2 is transmitted to the damper 16 through the guide column 17. The damper 16 is compressed in the vertical direction, and the vertical vibration energy is attenuated through the damping characteristics. At the same time, the ball 18 in the guide groove 15 rolls into contact with the outer wall of the guide column 17, replacing sliding friction with rolling friction, reducing motion resistance, and ensuring the stability of the vertical force. Meanwhile, the displacement of the buffer plate 2 pushes the steel ball 14 to roll along the inclined surface of the inclined block 10, converting the local pressure in the vertical direction into a horizontal component force, pushing the inclined block 10 to slide along the slide rod 7 through the sliding sleeve 8, thereby compressing the spring 9. The spring 9 absorbs the horizontal impact energy through elastic deformation, avoiding the deformation of the thin-walled structure of the aluminum alloy cylinder head due to stress concentration. The damper 16 and the spring 9 are compressed synchronously in the vertical and horizontal directions, converting the vibration energy into heat energy or elastic potential energy in stages, thereby effectively protecting the casting accuracy and extending the service life of the fixture.

[0022] In summary, this aluminum alloy cylinder head sand removal fixture, through the design of buffer plate 2, rubber plate 5, sliding rod 7, sliding sleeve 8, spring 9, inclined block 10, steel ball 14, guide groove 15, damper 16, guide post 17, and ball bearing 18, effectively solves the problem of insufficient buffering efficiency of traditional fixtures by reducing the dust-proof function of the rubber plate 5 to reduce the wear of moving parts by molding sand impurities. This improves the dimensional accuracy of castings and the reliability of production line operations.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An aluminum alloy cylinder head sand removal clamp, comprising a base (1), characterized in that: A rubber plate (5) is fixedly connected to the outer end of the top of the base (1). A buffer plate (2) is fixedly connected to the top of the rubber plate (5). A clamp body (3) is provided at the upper end of the buffer plate (2). Grooves (6) are provided on both sides of the top of the base (1). Slide rods (7) are fixedly installed at the front and rear ends of the center of the grooves (6). Sliding sleeves (8) are slidably connected to the opposite side of the four slide rods (7) on both sides. Inclined blocks (10) are fixedly connected to the top of each pair of sliding sleeves (8). A center of the bottom of the buffer plate (2) is fixedly connected to... Two ball seats (13) are each rolled with steel balls (14) at their lower ends. Each of the two steel balls (14) has a sloping block (10) at its bottom. Each of the four slide rods (7) is fitted with a spring (9). Each of the four corners of the top of the base (1) is provided with a guide groove (15). Each of the four guide grooves (15) is fixedly connected to a guide post (17) at the bottom of the buffer plate (2). Each of the four guide grooves (15) is fixedly installed with a damper (16) at its inner bottom. Each of the four guide grooves (15) is rolled with a ball (18) at its top position.

2. The aluminum alloy cylinder head sand removal fixture according to claim 1, characterized in that: The bottom of the fixture body (3) is fixedly connected to a support column (4), and the number of support columns (4) is several. The lower ends of the several support columns (4) are fixedly connected to the top of the buffer plate (2).

3. The aluminum alloy cylinder head sand removal fixture according to claim 1, characterized in that: The bottoms of the two steel balls (14) are in contact with the top of the inclined surfaces set on opposite sides of the two inclined blocks (10), one end of the spring (9) is fixedly connected to the inner wall of the groove (6), and the other end of the spring (9) is fixedly connected to one side of the inclined block (10).

4. The aluminum alloy cylinder head sand removal fixture according to claim 1, characterized in that: The front and rear ends of the two inclined blocks (10) are fixedly connected to sliders (12) on opposite sides of the bottom. The top of the base (1) is provided with grooves (11) corresponding to the lower ends of the four sliders (12). The bottoms of the four sliders (12) extend into the interior of the four grooves (11) and slide in connection with the inner wall of the grooves (11).

5. The aluminum alloy cylinder head sand removal fixture according to claim 1, characterized in that: The bottom of the four guide posts (17) extends into the interior of the four guide grooves (15) and is fixedly connected to the top of the four dampers (16).

6. The aluminum alloy cylinder head sand removal fixture according to claim 1, characterized in that: The number of balls (18) is several, and the surface of each ball (18) is in contact with the outer wall of the guide post (17).

7. The aluminum alloy cylinder head sand removal fixture according to claim 1, characterized in that: The bottom of the base (1) is fixedly connected to a mounting plate, and the top of the mounting plate has several mounting holes.

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