Machining quick-change fixture base

Abstract

The utility model belongs to the technical field of machining frock, especially a quick change clamp base of machining, including the chassis, the lower part of chassis is provided with controller and two groups of electric push rod respectively, the inside sliding connection of chassis has two slide frames, the top of chassis is provided with the connecting frame, the bottom surface of connecting frame and the upper surface of slide frame fixed connection, the upper surface of connecting frame is provided with two groups of fixed hole, the both sides of chassis all are provided with two limit rods, the end of each group of limit rod is close to each other in proper order and extends to the inside of chassis and is penetrated through slide frame and slide frame, through being provided with the linkage structure of electric push rod, slide frame and limit rod, realize the quick replacement of clamp, specifically, when electric push rod works, its telescopic end drives the transverse movement of connecting plate, and then drives limit rod synchronous movement, when limit rod inserts the inside of slide frame, can lock the relative position of slide frame and chassis quickly, ensure that connecting frame stable load clamp.

Description

Technical Field

[0001] This utility model belongs to the field of machining tooling technology, specifically relating to a quick-change fixture base for machining. Background Technology

[0002] Machining fixtures are process equipment used in machining to hold and position workpieces, enabling them to maintain the correct position relative to the machine tool or cutting tool. They determine the workpiece's machining position through positioning elements and fix the workpiece with clamping devices to prevent displacement during machining. They are widely used in turning, milling, drilling and other processes, and can ensure machining accuracy and improve production efficiency. They can be classified in various ways according to their use and driving method, and are an indispensable and important part of machining.

[0003] However, while machining fixtures can effectively clamp workpieces and improve machining convenience, traditional operations often make it difficult to quickly switch between fixtures in the context of fixture replacement. This results in a time-consuming and labor-intensive replacement process, which affects production efficiency. This limitation in replacement efficiency means that fixtures cannot fully meet the needs of high-efficiency machining in practical applications, and their convenience is greatly reduced.

[0004] To address the aforementioned issues, this application proposes a quick-change fixture base for machining. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a quick-change fixture base for machining, which features improved fixture change speed.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a quick-change fixture base for machining, comprising a base frame, a controller and two sets of electric push rods respectively disposed below the base frame, two sliding frames slidably connected inside the base frame, a connecting frame disposed above the base frame, the bottom surface of the connecting frame being fixedly connected to the upper surface of the sliding frames, two sets of fixing holes being opened on the upper surface of the connecting frame, two limiting rods being disposed on both sides of the base frame, the ends of each set of limiting rods approaching each other passing through the base frame and the sliding frames and extending into the interior of the base frame, a connecting plate being fixedly connected to the telescopic end of each electric push rod, and the sides of each set of connecting plates approaching each other being fixedly connected to the ends of each set of limiting rods away from each other.

[0007] As a preferred embodiment of this utility model, the bottom surface of the base frame is fixedly connected to two sets of connecting columns, and the bottom end of each connecting column is fixedly connected to a support plate.

[0008] As a preferred embodiment of this utility model, each of the support plates is provided with two fixing pins above it, and the bottom end of each fixing pin passes through the support plate and extends to the bottom of the support plate.

[0009] As a preferred embodiment of this utility model, a mounting plate is fixedly connected to the back of the controller, and the upper surface of the mounting plate is fixedly connected to the bottom surface of the base frame.

[0010] As a preferred technical solution of this utility model, the two sides of the base frame are fixedly connected with limiting plates, and the sides of the two limiting plates that are close to each other are in contact with the two sides of the connecting frame.

[0011] As a preferred embodiment of this utility model, each of the electric push rods has a fixed frame fixedly connected to its outer surface, and the upper surface of each fixed frame is fixedly connected to the bottom surface of the base frame.

[0012] As a preferred embodiment of this utility model, two fixing rods are fixedly connected to both sides of the connecting frame, and a handle is fixedly connected to the ends of each set of fixing rods that are far apart from each other.

[0013] As a preferred embodiment of this utility model, a protective pad is fixedly connected to the upper surface of the connecting frame, and the protective pad is made of rubber.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting up a linkage structure of electric push rod, sliding frame and limiting rod, the clamp can be quickly changed. Specifically, when the electric push rod is working, its telescopic end drives the connecting plate to move laterally, thereby driving the limiting rod to move synchronously. When the limiting rod is inserted into the sliding frame, it can quickly lock the relative position of the sliding frame and the base frame, ensuring that the connecting frame stably supports the clamp. When driven in the reverse direction, the limiting rod disengages from the sliding frame, and the sliding frame can slide freely along the inside of the base frame, so that the connecting frame can quickly separate or connect with the clamp to be replaced. The whole process does not require tedious manual debugging, which greatly shortens the operation time compared with the traditional manual clamp changing method. At the same time, the fixing holes opened on the connecting frame can install different clamps. The overall base structure realizes the quick positioning and locking of the clamp through mechanical drive, effectively solving the problems of long time and complicated operation steps of traditional clamp replacement, and significantly improving the clamp changing efficiency and machining accuracy stability in the production process. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the base frame of this utility model;

[0018] Figure 3 This is a schematic diagram of the connecting frame in this utility model;

[0019] Figure 4 This is a schematic diagram of the sliding frame in this utility model;

[0020] In the diagram: 1. Base frame; 2. Connecting frame; 3. Support plate; 4. Controller; 5. Mounting plate; 6. Fixing pin; 7. Connecting column; 8. Limiting plate; 9. Connecting plate; 10. Fixing frame; 11. Electric push rod; 12. Limiting rod; 13. Sliding frame; 14. Fixing rod; 15. Fixing hole; 16. Protective pad; 17. Handle. Detailed Implementation

[0021] 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.

[0022] Example

[0023] Please see Figure 1-4 The present invention provides the following technical solution: a quick-change fixture base for machining, including a base frame 1, a controller 4 and two sets of electric push rods 11 are respectively arranged below the base frame 1, two sliding frames 13 are slidably connected inside the base frame 1, a connecting frame 2 is arranged above the base frame 1, the bottom surface of the connecting frame 2 is fixedly connected to the upper surface of the sliding frame 13, two sets of fixing holes 15 are opened on the upper surface of the connecting frame 2, two limiting rods 12 are arranged on both sides of the base frame 1, the end of each set of limiting rods 12 that is close to each other passes through the base frame 1 and the sliding frame 13 in sequence and extends into the interior of the base frame 1, the telescopic end of each electric push rod 11 is fixedly connected to a connecting plate 9, and the side of each set of connecting plates 9 that is close to each other is fixedly connected to the end of each set of limiting rods 12 that is far away from each other;

[0024] In this embodiment, the controller 4 adopts a programmable logic controller (PLC). This controller is a digital computing electronic system designed specifically for industrial environments. It has a built-in programmable memory that can store and execute operation instructions such as logic operations, sequential control, timing, counting, and arithmetic operations. It can achieve precise control of various machines or production processes through digital or analog input / output interfaces. At the same time, the base frame 1 has matching slots inside, which provides guiding space for the sliding frame 13 to drive the connecting frame 2 to slide smoothly, ensuring the smoothness of the fixture replacement process.

[0025] Specifically, two sets of connecting columns 7 are fixedly connected to the bottom surface of the base frame 1. Each connecting column 7 is fixedly connected to a support plate 3 at its bottom end. In this embodiment, the rigid combination of the connecting columns 7 and the support plate 3 constructs a support system between the base frame 1 and the mounting surface. The height design of the connecting columns 7 creates a suspended space at the bottom of the base frame 1, providing installation and maintenance space for components such as the controller 4 and the electric push rod 11. The support plate 3, by expanding the contact area, evenly transmits the overall load of the base and processing vibration to the mounting surface, preventing the base frame 1 from deforming due to excessive local stress and ensuring long-term structural stability.

[0026] Specifically, two fixing pins 6 are provided above each support plate 3. The bottom end of each fixing pin 6 penetrates through the support plate 3 and extends to the bottom of the support plate 3. In this embodiment, the fixing pins 6 are used to achieve rigid anchoring between the support plate 3 and the machine tool table. The fixing pins 6 are made of high-strength alloy, and their penetration depth ensures that the connection strength is sufficient to resist the cutting force and impact force during processing. The four symmetrically distributed fixing pins 6 form a stable positioning structure, which effectively prevents the base from shifting or shaking during operation and provides a basic guarantee for the positioning accuracy of the fixture.

[0027] Specifically, a mounting plate 5 is fixedly connected to the back of the controller 4. The upper surface of the mounting plate 5 is fixedly connected to the bottom surface of the base frame 1. In this embodiment, the mounting plate 5 enables the controller 4 to be stably assembled with the base frame 1, and can buffer the vibration transmission of the base frame 1, protect the internal components of the controller 4 and extend its service life.

[0028] Specifically, limiting plates 8 are fixedly connected to both sides of the base frame 1. The sides of the two limiting plates 8 that are close to each other are in contact with the two sides of the connecting frame 2. In this embodiment, the limiting plates 8 form a lateral constraint on the connecting frame 2. The inner side of the limiting plate 8 and the side of the connecting frame 2 maintain a small gap, which does not hinder the longitudinal sliding of the connecting frame 2, but also resists the transverse cutting force during processing to prevent the connecting frame 2 from shifting laterally. At the same time, the limiting plates 8 can provide guidance for the installation of the connecting frame 2 to ensure the fitting accuracy between the sliding frame 13 and the base frame 1.

[0029] Specifically, each electric push rod 11 has a fixed frame 10 fixedly connected to its outer surface, and the upper surface of each fixed frame 10 is fixedly connected to the bottom surface of the base frame 1. In this embodiment, the fixed frame 10 is used to achieve rigid fixation between the electric push rod 11 and the base frame 1. The fixed frame 10 adopts a wrap-around structure to enhance the connection strength with the electric push rod 11, which can offset the reaction force generated when the push rod extends and retracts to avoid loosening, while ensuring the accuracy of the movement trajectory of the limit rod 12 to ensure the stability of the cooperation with the sliding frame 13.

[0030] Specifically, two fixing rods 14 are fixedly connected to both sides of the connecting frame 2. Each set of fixing rods 14 has a handle 17 fixedly connected to one end that is far apart from each other. In this embodiment, the fixing rods 14 and the handles 17 constitute a manual operation component. The symmetrically distributed fixing rods 14 make the force more even and avoid jamming when the connecting frame 2 slides. The anti-slip design and grip angle of the handles 17 are in line with operating habits and can reduce the labor intensity when manually changing clamps.

[0031] Specifically, a protective pad 16 is fixedly connected to the upper surface of the connecting frame 2. The protective pad 16 is made of rubber. In this embodiment, the rubber protective pad 16 forms a buffer layer between the connecting frame 2 and the clamp. The elasticity of the rubber can absorb the impact during the installation of the clamp to prevent the metal parts from being directly damaged by collision. At the same time, it increases the friction of the contact surface to help improve the stability of the clamp after installation. The insulation of the rubber material can also reduce electrostatic interference during the processing.

[0032] The working principle and usage process of this utility model are as follows: In use, firstly, the quick-change fixture base is rigidly anchored to the machine tool worktable via a fixed pin 6 through the support plate 3, ensuring a stable installation. Then, the controller 4 presets the operating logic and parameters of the electric push rod 11 to complete system initialization. When the fixture needs to be changed, the operator sends a fixture change command to the controller 4 via an external control terminal. The controller 4 drives the electric push rod 11 to extend, and the telescopic end of the electric push rod 11 moves the connecting plate 9 laterally, causing the limit rod 12 to retract from the sliding frame 13, releasing the lock on the sliding frame 13. At this time, the operator can hold the handle 17 and... The connecting frame 2 is pushed by the fixed rod 14, which drives the sliding frame 13 to slide smoothly along the slot inside the base frame 1, removing the old fixture. Then, the new fixture is positioned and installed in the corresponding fixed hole 15 on the connecting frame 2. The electric push rod 11 is retracted by the controller 4, which pushes the connecting plate 9 to re-insert the limiting rod 12 into the sliding frame 13, quickly locking the relative position of the sliding frame 13 and the base frame 1. During the process, the limiting plate 8 forms a lateral constraint on the connecting frame 2 to ensure its sliding accuracy, while the rubber protective pad 16 buffers the impact force during fixture installation to avoid rigid collisions. Thus, the quick replacement of the fixture is completed, and the machine tool can be started for processing operations.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A quick-change fixture base for machining, characterized in that: The system includes a base frame (1), with a controller (4) and two sets of electric push rods (11) respectively installed below the base frame (1). Two sliding frames (13) are slidably connected inside the base frame (1). A connecting frame (2) is installed above the base frame (1). The bottom surface of the connecting frame (2) is fixedly connected to the upper surface of the sliding frame (13). Two sets of fixing holes (15) are opened on the upper surface of the connecting frame (2). Two limiting rods (12) are provided on both sides of the base frame (1). The ends of each set of limiting rods (12) that are close to each other pass through the base frame (1) and the sliding frame (13) and extend into the interior of the base frame (1). A connecting plate (9) is fixedly connected to the telescopic end of each electric push rod (11). The sides of each set of connecting plates (9) that are close to each other are fixedly connected to the ends of each set of limiting rods (12) that are far away from each other.

2. The machining quick-change fixture base according to claim 1, characterized in that: The bottom surface of the base frame (1) is fixedly connected to two sets of connecting columns (7), and the bottom end of each connecting column (7) is fixedly connected to a support plate (3).

3. The machining quick-change fixture base according to claim 2, characterized in that: Two fixing pins (6) are provided above each of the support plates (3), and the bottom end of each fixing pin (6) passes through the support plate (3) and extends to the bottom of the support plate (3).

4. The machining quick-change fixture base according to claim 1, characterized in that: The back of the controller (4) is fixedly connected to a mounting plate (5), and the upper surface of the mounting plate (5) is fixedly connected to the bottom surface of the base frame (1).

5. A quick-change fixture base for machining according to claim 1, characterized in that: Limiting plates (8) are fixedly connected to both sides of the base frame (1), and the sides of the two limiting plates (8) that are close to each other are in contact with the two sides of the connecting frame (2).

6. The machining quick-change fixture base according to claim 1, characterized in that: Each of the electric push rods (11) has a fixed bracket (10) fixedly connected to its outer surface, and the upper surface of each fixed bracket (10) is fixedly connected to the bottom surface of the base frame (1).

7. A quick-change fixture base for machining according to claim 1, characterized in that: Two fixing rods (14) are fixedly connected to both sides of the connecting frame (2), and a handle (17) is fixedly connected to the opposite end of each set of fixing rods (14).

8. A quick-change fixture base for machining according to claim 1, characterized in that: A protective pad (16) is fixedly connected to the upper surface of the connecting frame (2), and the protective pad (16) is made of rubber.

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