Metal casting combined modular quick change fixture

Abstract

The application relates to the field of mulch paper preparation technology, in particular to a combined modular quick-replacement clamp for metal castings, which comprises a bottom plate and a positioning block, two movable plates are arranged on the bottom plate, a driving assembly for driving the relative movement of the two movable plates is arranged on the bottom plate, an installation cylinder is connected to the movable plate, a piston rod is arranged in the installation cylinder, a piston block is integrally arranged at the end of the piston rod in the installation cylinder, the axes of the installation cylinder, the piston rod and the piston block are arranged in line, a gas cavity is arranged between the piston block and the installation cylinder, a gas hole communicating with the gas cavity is arranged on the installation cylinder, an elastic assembly is arranged between the piston block and the cylinder bottom of the installation cylinder, a rubber expansion ring is sleeved on the end of the piston rod penetrating out of the installation cylinder and connected with a pressing block, the rubber expansion ring is located between the pressing block and the installation cylinder, and a plug-in slot for inserting the pressing block is arranged on the positioning block. The application has the effects of enabling the tool clamp to be adapted to various models of castings and improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of cooling technology in wire production, and in particular to a modular quick-change fixture for metal castings. Background Technology

[0002] In the subsequent machining (such as milling, drilling, tapping, grinding, etc.), inspection (such as coordinate measuring machine), assembly or cleaning of metal castings (such as engine cylinder blocks, gearbox housings, valve bodies, pump bodies, structural supports, etc.), stable, accurate and efficient clamping is the key link to ensure machining accuracy, improve production efficiency and ensure operational safety. Metal castings generally have characteristics such as complex shapes, irregular contours and relatively large dimensional tolerances, which puts forward special requirements for their clamping and positioning.

[0003] Currently, the traditional practice in the industry is to design or manufacture a dedicated integral fixture for each specific model or shape of metal casting. This fixture usually includes a contour positioning block (or groove) that precisely matches a specific part of the casting and a clamping mechanism. Although it can provide good positioning accuracy and rigidity, each casting needs to be specifically manufactured, which increases production costs. Furthermore, when the production line switches to process different models of castings, the entire fixture needs to be replaced, which is time-consuming and labor-intensive, reducing production efficiency. Utility Model Content

[0004] In order to enable tooling fixtures to be adapted to various types of castings and improve production efficiency, this application provides a modular quick-change fixture for metal castings.

[0005] This application provides a modular quick-change fixture for metal castings, employing the following technical solution: A modular quick-change fixture for metal castings includes a base plate and a positioning block with a contour groove. Two movable plates are mounted on the base plate, and a driving assembly is provided on the base plate to drive the two movable plates to move relative to each other. An installation cylinder is connected to the movable plates. A piston rod passes through the installation cylinder, and a piston block is integrally formed at the end of the piston rod located inside the installation cylinder. The axes of the installation cylinder, piston rod, and piston block are collinear. A gas chamber for high-pressure gas to enter is provided between the piston block and the installation cylinder. An air hole communicating with the gas chamber is opened on the installation cylinder. An elastic component is provided between the piston block and the bottom of the installation cylinder. A rubber tensioning ring is fitted onto the end of the piston rod extending out of the installation cylinder and connected to a pressure block. The rubber tensioning ring is located between the pressure block and the installation cylinder. An insertion groove for the pressure block to be inserted is opened on the positioning block.

[0006] Preferably, the driving assembly comprises a guide rail, a sliding block, a pushing cylinder and a connecting block, the guide rail is connected to the bottom plate, the guide rail is arranged along the length direction of the bottom plate, the sliding block is slidably arranged on the guide rail, the movable plate is connected with the sliding block, the pushing cylinder is mounted on the bottom plate, the connecting block is connected to the end of a piston rod of the pushing cylinder, and the connecting block is connected with the movable plate.

[0007] Preferably, a mounting frame is connected to the movable plate, the mounting frame is arranged in a "匚"-shape, and the mounting cylinder is connected with the mounting frame.

[0008] Preferably, both the piston rod and the piston block are slidably attached to an inner wall of the mounting cylinder, sealing rings are embedded on both the piston rod and the piston block, and the sealing rings are arranged along the circumferential direction of the piston rod and the piston block.

[0009] Preferably, a side wall of the piston rod is arranged in a stepped shape, and an inner wall of the mounting cylinder is adapted to the piston rod.

[0010] Preferably, the elastic assembly comprises a spring seat and a return spring, the spring seat is connected to an end of the mounting cylinder, the return spring is clamped between the spring seat and the piston block, and a clamping groove for the return spring to clamp into is formed on the piston block.

[0011] Preferably, a positioning column is fixedly connected to the mounting cylinder, the positioning column is arranged along a direction parallel to the piston rod, one positioning column is respectively arranged on opposite sides of the piston rod, and a positioning hole for the positioning column to insert into is formed on the positioning block.

[0012] In summary, the present application includes the following beneficial technical effects: The combined modular quick-change clamp for metal castings provided by the utility model adopts a replaceable modular design for the positioning block. By only replacing the positioning block matching the contour of the casting, multiple castings of different models and shapes can be adapted on the same set of driving equipment, which changes the traditional mode of "one clamp for one casting", reduces the development and manufacturing cost of special clamps caused by the diversification of product models. When replacing the positioning block, it only needs to cut off the external air supply, then the current positioning block can be pulled out, a new positioning block can be replaced by means of plug-in connection, and then clamped and fixed through external air supply, thereby achieving the effect that the tool clamp can be adapted to castings of multiple models and improving the production efficiency. Description of Drawings

[0013] Figure 1 is a structural schematic diagram of the combined modular quick-change clamp for metal castings in the embodiment of the present application; Figure 2 is a schematic diagram for illustrating the internal structure of the mounting cylinder in the embodiment of the present application.

[0014] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Positioning block; 21. Insertion slot; 22. Positioning hole; 3. Movable plate; 31. Mounting frame; 4. Drive assembly; 41. Guide rail; 42. Slider; 43. Push cylinder; 44. Connecting block; 5. Mounting cylinder; 51. Piston rod; 52. Piston block; 53. Air hole; 54. Pressure block; 55. Rubber tension ring; 56. Positioning post; 6. Elastic assembly; 61. Spring seat; 62. Return spring; 7. Sealing ring. Detailed Implementation

[0015] To enable those skilled in the art to better understand the present invention, the solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0016] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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 specific orientation structure and operation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0017] This application discloses a modular quick-change fixture for metal castings. (Refer to...) Figure 1 and Figure 2, The combined modular quick-change fixture for metal castings comprises a base plate 1 and a positioning block 2 with a profiling groove. Two movable plates 3 are arranged on the base plate 1, and a driving assembly 4 for driving the two movable plates 3 to move relatively is arranged on the base plate 1. A mounting cylinder 5 is connected to the movable plate 3, a piston rod 51 is penetrated in the mounting cylinder 5, a piston block 52 is integrally formed at an end of the piston rod 51 located inside the mounting cylinder 5. The axes of the mounting cylinder 5, the piston rod 51 and the piston block 52 are collinear. An air cavity for high-pressure gas to enter is arranged between the piston block 52 and the mounting cylinder 5, an air hole 53 communicated with the air cavity is opened on the mounting cylinder 5. An elastic assembly 6 is arranged between the piston block 52 and the cylinder bottom of the mounting cylinder 5. An end of the piston rod 51 penetrating out of the mounting cylinder 5 is sleeved with a rubber expansion ring 55 and connected with a pressing block 54. The rubber expansion ring 55 is located between the pressing block 54 and the mounting cylinder 5. An insertion slot 21 for inserting the pressing block 54 is opened on the positioning block 2.

[0018] During operation, the external air supply is turned off, the current positioning block 2 is pulled out, a new positioning block 2 is inserted onto the pressing block 54, then the external air supply is turned on, compressed gas pushes the piston block 52 to move, the piston block 52 drives the piston rod 51 and the pressing block 54 to move, the pressing block 54 squeezes and expands the rubber expansion ring 55 to fix the positioning block 2. Then the casting is placed between the two positioning blocks 2, the driving assembly 4 drives the two positioning blocks 2 to approach each other, thus the casting can be clamped and fixed.

[0019] The driving assembly 4 comprises a guide rail 41, a sliding block 42, a pushing cylinder 43 and a connecting block 44. The guide rail 41 is connected to the base plate 1, the guide rail 41 is arranged along the length direction of the base plate 1, the sliding block 42 is slidably arranged on the guide rail 41, the movable plate 3 is connected with the sliding block 42, the pushing cylinder 43 is installed on the base plate 1, the connecting block 44 is connected to the end of the piston rod 51 of the pushing cylinder 43, and the connecting block 44 is connected with the movable plate 3.

[0020] A mounting frame 31 is connected to the movable plate 3, the mounting frame 31 is arranged in a "匚" shape, the mounting cylinder 5 is connected with the mounting frame 31. By arranging the mounting frame 31, it is beneficial to improve the connection stability of the mounting cylinder 5 on the movable plate 3.

[0021] Both the piston rod 51 and the piston block 52 are slidably attached to the inner wall of the mounting cylinder 5, sealing rings 7 are embedded on both the piston rod 51 and the piston block 52, the sealing rings 7 are arranged along the circumferential direction of the piston rod 51 and the piston block 52. By arranging the sealing rings 7, it is beneficial to improve the air tightness of the air cavity between the piston block 52 and the mounting cylinder 5.

[0022] The side wall of the piston rod 51 is arranged in a stepped shape, the inner wall of the mounting cylinder 5 is adapted to the piston rod 51. With this arrangement, when the piston rod 51 moves outward, the inner wall of the mounting cylinder 5 can limit the piston rod 51, prevent the piston rod 51 from separating from the mounting cylinder 5, and ensure the stable operation of the equipment.

[0023] The elastic component 6 includes a spring seat 61 and a return spring 62. The spring seat 61 is connected to the end of the mounting cylinder 5. The return spring 62 is locked between the spring seat 61 and the piston block 52. The piston block 52 has a slot for the return spring 62 to be locked in. When the external air supply is turned off, the compressed return spring 62 can push the piston block 52 to move and reset, so as to facilitate subsequent operations.

[0024] A positioning post 56 is fixedly connected to the mounting cylinder 5. The positioning post 56 is arranged in a direction parallel to the piston rod 51. There is one positioning post 56 on each side opposite to the piston rod 51. The positioning block 2 is provided with a positioning hole 22 for the positioning post 56 to be inserted. The precise fit between the positioning post 56 and the positioning hole 22 further ensures the accurate position of the positioning block 2 on the mounting cylinder 5.

[0025] The implementation principle of the modular quick-change fixture for metal castings in this application embodiment is as follows: During operation, the external air supply is turned off, the current positioning block 2 is pulled out, the new positioning block 2 is inserted into the pressure block 54, and then the external air supply is turned on. The compressed gas pushes the piston block 52 to move, and the piston block 52 drives the piston rod 51 and the pressure block 54 to move. The pressure block 54 squeezes the expansion rubber tension ring 55 to fix the positioning block 2. Then the casting is placed between the two positioning blocks 2. The cylinder 43 is pushed to move the movable plate 3, so that the two positioning blocks 2 on the movable plate 3 are brought closer to each other, thus clamping and fixing the casting.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. All technical solutions within the scope of this utility model's concept are within the protection scope of this utility model. It should be pointed out that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A modular quick-change fixture for metal castings, characterized in that: Comprises a bottom plate (1) and a positioning block (2) provided with a profiling groove, wherein two movable plates (3) are arranged on the bottom plate (1), a driving assembly (4) for driving the two movable plates (3) to move relatively is arranged on the bottom plate (1), a mounting cylinder (5) is connected to the movable plates (3), a piston rod (51) is inserted through the mounting cylinder (5), a piston block (52) is integrally formed at an end of the piston rod (51) located inside the mounting cylinder (5), the axes of the mounting cylinder (5), the piston rod (51) and the piston block (52) are arranged collinearly, an air cavity for high-pressure gas to enter is arranged between the piston block (52) and the mounting cylinder (5), an air hole (53) communicating with the air cavity is formed on the mounting cylinder (5), an elastic assembly (6) is arranged between the piston block (52) and the cylinder bottom of the mounting cylinder (5), an end of the piston rod (51) extending out of the mounting cylinder (5) is sleeved with a rubber tension ring (55) and connected with a pressing block (54), the rubber tension ring (55) is located between the pressing block (54) and the mounting cylinder (5), and an insertion slot (21) for inserting the pressing block (54) is formed on the positioning block (2).

2. The modular quick-change fixture for metal castings according to claim 1, characterized in that: The driving assembly (4) comprises a guide rail (41), a sliding block (42), a pushing cylinder (43) and a connecting block (44), the guide rail (41) is connected to the bottom plate (1), the guide rail (41) is arranged along the length direction of the bottom plate (1), the sliding block (42) is slidably arranged on the guide rail (41), the movable plate (3) is connected with the sliding block (42), the pushing cylinder (43) is mounted on the bottom plate (1), the connecting block (44) is connected to an end of the piston rod (51) of the pushing cylinder (43), and the connecting block (44) is connected with the movable plate (3).

3. The modular quick-change fixture for metal castings according to claim 1, characterized in that: A mounting frame (31) is connected to the movable plate (3), the mounting frame (31) is arranged in a U shape, and the mounting cylinder (5) is connected with the mounting frame (31).

4. The modular quick-change fixture for metal castings according to claim 1, characterized in that: Both the piston rod (51) and the piston block (52) are slidably attached to an inner wall of the mounting cylinder (5), sealing rings (7) are embedded in both the piston rod (51) and the piston block (52), and the sealing rings (7) are arranged along the circumferential direction of the piston rod (51) and the piston block (52).

5. A modular quick-change fixture for metal castings according to claim 1, characterized in that: A side wall of the piston rod (51) is arranged in a stepped shape, and an inner wall of the mounting cylinder (5) is adapted to the piston rod (51).

6. A modular quick-change fixture for metal castings according to claim 1, characterized in that: The elastic assembly (6) comprises a spring seat (61) and a return spring (62), the spring seat (61) is connected to an end of the mounting cylinder (5), the return spring (62) is clamped between the spring seat (61) and the piston block (52), and a clamping slot for the return spring (62) to clamp into is formed on the piston block (52).

7. A modular quick-change fixture for metal castings according to claim 1, characterized in that: Positioning columns (56) are fixedly connected to the mounting cylinder (5), the positioning columns (56) are arranged along a direction parallel to the piston rod (51), one positioning column (56) is respectively arranged on opposite sides of the piston rod (51), and positioning holes (22) for the positioning columns (56) to insert into are formed on the positioning block (2).

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