Machining clamp for cleaning aluminum skimmings in casting cavity

Abstract

The utility model relates to a machining fixture for cleaning aluminum skimmings in a casting cavity, which belongs to the field of tool fixtures and comprises a pedestal, a plurality of first support cylinders for supporting the bottom of a cavity casting are arranged on the top surface of the pedestal, and mounting columns are arranged on the periphery of the top surface of the pedestal. A first supporting cylinder used for supporting the side wall of the cavity casting is arranged on the pedestal, a second supporting cylinder used for abutting against the side wall of the cavity casting is arranged on the mounting column, a universal air nozzle aligned with a hole of the cavity casting is arranged on the top face of the pedestal, and an oil way is arranged in the pedestal and communicated with the first supporting cylinder and the second supporting cylinder. The hydraulic control device has the advantages that stretching and retracting of the first supporting cylinder and the second supporting cylinder are hydraulically controlled, the control and adjustment range is large, the supporting cylinders can automatically stop after abutting against a cavity casting, machining stability is guaranteed, and the cavity casting is prevented from being damaged by abutting; and in the machining cutting process, air is blown through the universal air nozzle, aluminum scraps are prevented from entering the cavity casting, cleaning is facilitated, and additional procedures are reduced.

Description

Technical Field

[0001] The utility model relates to the field of tooling fixtures, in particular to a machining fixture used for cleaning aluminum chips in a casting cavity. Background Art

[0002] In the field of low-pressure casting, the finished casting is merely a blank, requiring machining to remove excess material. Cavity castings, on the other hand, require significant machining due to their nearly closed cavities and the large excess material produced by low-pressure castings. During machining, large amounts of aluminum chips enter the cavity and are difficult to remove, making the use of cleaning machines prohibitively expensive and adding an additional cleaning step. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an aluminum chip cleaning fixture for cavity casting machining.

[0004] The technical solution of the utility model for solving the above-mentioned technical problems is as follows: a machining fixture for cleaning aluminum chips in a casting cavity, comprising a pedestal, the top surface of the pedestal being provided with a plurality of first support cylinders for supporting the bottom of the cavity casting, mounting columns being provided around the top surface of the pedestal, the mounting columns being provided with second support cylinders for supporting the side walls of the cavity casting, the top surface of the pedestal being provided with a universal air nozzle aimed at the interior of the cavity casting, an oil circuit being provided in the pedestal, and the oil circuit being connected to the first support cylinder and the second support cylinder.

[0005] The beneficial effects of the utility model are as follows: the extension and contraction of the first support cylinder and the second support cylinder are controlled by hydraulic pressure, the control adjustment range is large, and the support cylinder can automatically stop after supporting the cavity casting, which not only ensures the processing stability but also prevents the cavity casting from being damaged;

[0006] During the machining process, air is blown through a universal air nozzle to prevent aluminum chips from entering the cavity casting, which is beneficial for cleaning and reduces additional processes.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, a plurality of corner cylinders for pressing the top of the cavity casting are arranged around the top surface of the pedestal.

[0009] The beneficial effect of adopting the above further solution is: clamping from multiple directions, thereby improving the clamping stability of the cavity casting.

[0010] Furthermore, a plurality of air paths are provided in the base, and the universal air nozzle is connected to the air paths.

[0011] The beneficial effect of adopting the above further solution is to provide an air source for the universal air nozzle.

[0012] Furthermore, one end of a connecting plate is hingedly connected to one side wall of the pedestal, and a fixing clip for clamping the side wall of the cavity casting is fixedly provided at the other end of the connecting plate;

[0013] The middle portion of the connecting plate is further hinged to one end of a limiting plate, and the other end of the limiting plate is hinged to the side wall of the pedestal.

[0014] The beneficial effects of adopting the above further solution are: increasing the clamping mode, facilitating adjustment, and being applicable to castings of different shapes.

[0015] Furthermore, the side wall where the fixing card abuts against the cavity casting follows the mold.

[0016] The beneficial effect of adopting the above further solution is that the clamping is more firmly fitted.

[0017] Furthermore, a spring positioning pin is provided on the top surface of the pedestal.

[0018] The beneficial effect of adopting the above further solution is that it is used to accurately position the cavity casting before machining, thereby reducing machining errors.

[0019] Furthermore, a lifting lug is installed on the top surface of the pedestal.

[0020] The beneficial effect of adopting the above further solution is that the platform is easy to move.

[0021] Furthermore, a plurality of positioning tools are provided on the pedestal.

[0022] The beneficial effect of adopting the above further solution is: performing rough positioning on the cavity casting when placing it, thereby improving the placement efficiency.

[0023] Furthermore, a turntable is provided on the bottom surface of the base.

[0024] The beneficial effect of adopting the above further solution is that the pedestal can be rotated arbitrarily and the posture of the pedestal can be adjusted, which is suitable for the processing and blowing of castings of different shapes.

[0025] Furthermore, a barometer is provided on the pedestal.

[0026] The beneficial effects of adopting the above further solution are: visualizing the gas line pressure and better cleaning the aluminum chips. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the base of the utility model.

[0028] Figure 2 This is a schematic diagram of the cavity casting of the present invention.

[0029] Figure 3 This is a schematic diagram of a fixing card of the present utility model.

[0030] Figure 4 It is a working schematic diagram of the utility model.

[0031] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0032] 1. Base; 2. Cavity casting; 3. First support cylinder; 4. Mounting column; 5. Second support cylinder; 6. Universal air nozzle; 7. Corner cylinder; 8. Connecting plate; 9. Fixing card; 10. Limit plate; 11. Spring locating pin; 12. Lifting ear; 13. Turntable; 14. Air pressure gauge; 15. Support rod. DETAILED DESCRIPTION

[0033] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0034] Example 1

[0035] like Figures 1 to 4 As shown, a machining fixture for cleaning aluminum chips in a casting cavity includes a pedestal 1, the top surface of the pedestal 1 is provided with a plurality of first support cylinders 3 for supporting the bottom of the cavity casting 2, the top surface of the pedestal 1 is provided with mounting columns 4 all around, the mounting columns 4 are provided with second support cylinders 5 for supporting the side walls of the cavity casting 2, the top surface of the pedestal 1 is provided with a universal air nozzle 6 aimed at the inside of the cavity casting 2, and an oil circuit is provided in the pedestal 1, which is connected to the first support cylinder 3 and the second support cylinder 5.

[0036] The beneficial effects of this embodiment are: the extension and retraction of the first support cylinder 3 and the second support cylinder 5 are controlled by hydraulic pressure, with a large control adjustment range. When the support cylinders press against the cavity casting 2, they can automatically stop, which not only ensures processing stability but also prevents the cavity casting 2 from being damaged.

[0037] During the machining process, air is blown through the universal air nozzle 6 to prevent aluminum chips from entering the cavity casting 2, which is beneficial for cleaning and reduces additional steps.

[0038] In this embodiment, the support cylinder refers to a retractable hydraulic clamping element, including a plunger, a tapered sleeve, a piston, a plunger rising spring, a tapered sleeve return spring and a piston return spring. The bottom of the support cylinder is connected to the oil circuit, and the plunger is driven by oil pressure to press against the cavity casting 2. The plunger will automatically lock after pressing against the cavity casting 2, which not only ensures the clamping force, but also prevents the cavity casting 2 from being damaged, avoids deformation of the workpiece due to cutting force during processing, and avoids vibration during processing, which affects the processing accuracy of the workpiece.

[0039] Specifically, there are more than one first support cylinder 3 and more than three second support cylinders 5, which are arranged around the cavity casting 2. A mounting hole is opened on the side of the mounting column 4 facing the cavity casting 2. The second support cylinder 5 is inserted into the mounting hole. The bottom of the mounting hole is filled with a gasket. By increasing or decreasing the number of gaskets, the extension length of the second support cylinder 5 can be fine-tuned, and the adjustable range can be increased in conjunction with the telescopic stroke of the second support cylinder 5 itself.

[0040] Specifically, the low-pressure casting material is usually aluminum alloy, and the cavity casting 2 refers to a casting with a cavity inside. Due to the casting principle, the cavity casting 2 will not have a completely closed cavity, and the outer wall of the cavity casting 2 must have multiple holes connected to the internal cavity.

[0041] When it is necessary to machine the surface of the cavity casting 2, aluminum chips may enter the interior of the cavity casting 2 through the holes. In order to prevent this phenomenon from happening, a universal air nozzle 6 that can rotate in any direction is provided on the top surface of the base 1. The universal direction can be achieved through a metal shaping hose. Aim the universal air nozzle 6 at a hole somewhere in the cavity casting 2 and blow air. The air flow will fill the internal cavity and be blown out from other holes, preventing machined aluminum chips from entering the cavity of the cavity casting 2 and improving the cleanliness.

[0042] In addition, there are multiple vertically arranged support rods 15 on the top surface of the pedestal 1. When the robot arm for transporting parts clamps the cavity casting 2 and places it on the pedestal 1, the support rods 15 are used to prevent the robot arm from descending too low.

[0043] Example 2

[0044] like Figure 1 and Figure 4 As shown, preferably, on the basis of embodiment 1, a plurality of corner cylinders 7 for pressing the top of the cavity casting 2 are provided around the top surface of the pedestal 1 .

[0045] The beneficial effects of adopting the preferred solution in the above embodiment are: clamping from multiple directions, thereby improving the clamping stability of the cavity casting.

[0046] Specifically, there are at least four corner cylinders 7. The corner cylinder 7 is a clamp driven by air pressure or hydraulic pressure, including a cylinder body, a piston and a pressure arm. The piston drives the pressure arm to rise and fall and rotate. Before placing the cavity casting 2, the pressure arm rotates to the side to avoid interfering with the placement of the casting.

[0047] After the cavity casting 2 is placed, the pressing arm rotates to the top of the cavity casting 2, descends to press the cavity casting 2, and completes the fixed clamping.

[0048] Example 3

[0049] like Figure 1As shown, preferably, on the basis of embodiment 1-2, an air path is provided in the base 1, and the universal air nozzle 6 is connected to the air path.

[0050] Preferably, a barometer 14 is provided on the base 1 .

[0051] In this embodiment, the air circuit is opened inside the base 1, one end is connected to the external air source, and the other end is connected to the universal air nozzle 6 to provide power. The pressure gauge 14 is connected to the air circuit and displays the air pressure value in real time, which is convenient for the staff to adjust the cleaning pressure of the universal air nozzle 6.

[0052] Example 4

[0053] like Figure 3 As shown, preferably, on the basis of embodiments 1-3, one end of a connecting plate 8 is hingedly connected to one side wall of the pedestal 1, and a fixing card 9 for clamping the side wall of the cavity casting 2 is fixedly provided at the other end of the connecting plate 8;

[0054] One end of a limiting plate 10 is hinged to the middle of the connecting plate 8 , and the other end of the limiting plate 10 is hinged to the side wall of the pedestal 1 .

[0055] Preferably, the side wall where the fixing card 9 abuts against the cavity casting 2 follows the mold.

[0056] In this embodiment, one end of the connecting plate 8 is hinged on the side wall of the pedestal 1 and can swing around the side wall of the pedestal 1. After swinging until the fixing card 9 abuts against the side wall of the cavity casting 2, the middle part of the connecting plate 8 is fixedly connected to the side wall of the pedestal 1 through the limiting plate 10 to form a stable frame structure.

[0057] Specifically, by replacing the limiting plates 10 with different lengths, the swing angle of the connecting plate 8 can be limited, which is suitable for clamping castings of different shapes and sizes.

[0058] In addition, a groove is provided on the side of the connecting plate 8 facing the cavity casting 2, and the fixing card 9 is placed in the groove and fixed by screws. The groove has a positioning function, which is convenient for disassembly and replacement.

[0059] Example 5

[0060] like Figure 1 As shown, preferably, on the basis of embodiments 1-4, a spring positioning pin 11 is provided on the top surface of the base 1.

[0061] Preferably, a lifting lug 12 is installed on the top surface of the pedestal 1 .

[0062] Preferably, a plurality of positioning tools are provided on the pedestal 1 .

[0063] In this embodiment, a number of L-shaped positioning tools are provided around the top surface of the pedestal 1, which are not shown in the figure. The distance between each two opposing positioning tools is greater than the width of the cavity casting 2 in that direction. When the cavity casting 2 is placed on the pedestal 1, the positioning tools have a rough positioning and guiding function, which facilitates the cavity casting 2 to fall smoothly between multiple positioning tools.

[0064] Specifically, precise positioning is achieved through the spring positioning pin 11, which can locate the hole position or other characteristic parts of the cavity casting 2, reduce processing errors, and facilitate processing.

[0065] Specifically, the lifting lug 12 cooperates with equipment such as a crane and a crane to lift the movable platform 1 .

[0066] Example 6

[0067] like Figure 1 As shown, preferably, on the basis of embodiments 1-5, a turntable 13 is provided on the bottom surface of the base 1.

[0068] The beneficial effects of adopting the preferred solution in the above embodiment are: the base 1 can be rotated arbitrarily, the posture of the base 1 can be adjusted, and it is suitable for processing and blowing castings of different shapes.

[0069] Specifically, the bottom of the turntable 13 is fixedly connected to the machine tool used for machining, and the turntable 13 has its own rotational power.

[0070] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0072] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0073] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0075] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A machining fixture for cleaning aluminum chips from a casting cavity, characterized in that: The invention comprises a pedestal (1), wherein the top surface of the pedestal (1) is provided with a plurality of first supporting cylinders (3) for supporting the bottom of a cavity casting (2), the top surface of the pedestal (1) is provided with mounting columns (4) on all four sides, the mounting columns (4) are provided with second supporting cylinders (5) for supporting the side walls of the cavity casting (2), the top surface of the pedestal (1) is provided with a universal air nozzle (6) aligned with the inside of the cavity casting (2), and an oil circuit is provided in the pedestal (1), and the oil circuit is connected with the first supporting cylinder (3) and the second supporting cylinder (5).

2. A machining fixture for cleaning aluminum chips from a casting cavity according to claim 1, characterized in that: A plurality of corner cylinders (7) for pressing the top of the cavity casting (2) are arranged around the top surface of the pedestal (1).

3. A machining fixture for cleaning aluminum chips from a casting cavity according to claim 1, characterized in that: A plurality of air paths are provided in the base (1), and the universal air nozzle (6) is connected to the air paths.

4. A machining fixture for cleaning aluminum chips from a casting cavity according to claim 1, characterized in that: One end of a connecting plate (8) is hingedly connected to one side wall of the pedestal (1), and a fixing clamp (9) for clamping the side wall of the cavity casting (2) is fixedly provided at the other end of the connecting plate (8); The middle portion of the connecting plate (8) is also hinged to one end of a limiting plate (10), and the other end of the limiting plate (10) is hinged to the side wall of the pedestal (1).

5. A machining fixture for cleaning aluminum chips from a casting cavity according to claim 4, characterized in that: The side wall of the location where the fixing card (9) abuts against the cavity casting (2) follows the mold.

6. A machining fixture for cleaning aluminum chips from a casting cavity according to claim 1, characterized in that: The top surface of the pedestal (1) is provided with a spring positioning pin (11).

7. A machining fixture for cleaning aluminum chips from a casting cavity according to claim 1, characterized in that: A lifting lug (12) is installed on the top surface of the pedestal (1).

8. A machining fixture for cleaning aluminum chips from a casting cavity according to claim 1, characterized in that: A plurality of positioning tools are provided on the pedestal (1).

9. A machining fixture for cleaning aluminum chips from a casting cavity according to any one of claims 1 to 8, characterized in that: A turntable (13) is provided on the bottom surface of the base (1).

10. A machining fixture for cleaning aluminum chips from a casting cavity according to any one of claims 1 to 8, characterized in that: A barometer (14) is provided on the pedestal (1).

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