An overload protection structure of a closed double-crank-shaft precision steel frame machine tool

Abstract

The utility model discloses an overload protection structure of closed double -curved axle precision steel frame machine tool, including closed double -curved axle precision steel frame machine tool body, the both sides of closed double -curved axle precision steel frame machine tool body all are provided with the mounting groove, two mounting grooves all are provided with two positioning pins, and the positioning pin fixedly connected closed double -curved axle precision steel frame machine tool body, two positioning pin sleeve of being in the same end are provided with same bottom plate, and two bottom plates are fixedly connected with T -shaped board in the side of each other's close -up, and the top of two T -shaped boards all is provided with overload protection mechanism, and the both sides of bottom plate all are fixedly connected with the side board, and two sleeves are fixedly connected with two sleeves in the side of each other's close -up in two side boards, and two moving plates are provided in the mounting groove. The utility model improves the convenience of dismounting, greatly simplifies the dismounting process of overload protection mechanism. Maintenance personnel can more quickly check and change operation to save time and manpower, and improve the overall efficiency of maintenance work.

Description

Technical Field

[0001] This utility model relates to the field of machine tool overload protection technology, and in particular to an overload protection structure for a closed-type double crankshaft precision steel frame machine tool. Background Technology

[0002] Closed-type double-crankshaft precision steel frame machine tools are machine tools used for high-precision machining, mainly in industries such as machinery manufacturing, automobiles, and aerospace. These machine tools can provide higher efficiency and better surface quality when machining complex contours or precision parts, and therefore have important application value in the industrial field.

[0003] A search revealed Chinese patent CN219683802U, which discloses an overload-protected closed-type double-crankshaft precision punch press, relating to the field of punch press technology. The press includes a base, with upright plates fixed to both sides of the base's top. A top plate is fixed between the two upright plates, and a cylinder is fixed to the center of the top of the top plate. A pressure plate is fixedly connected to the piston rod of the cylinder, and an upper die is engaged at the bottom of the pressure plate. An installation assembly is provided between the pressure plate and the upper die. The beneficial effects of this invention are: during the downward movement of the pressure plate, four buffer rods slide on the inner walls of four third sliding holes, thereby limiting the punching trajectory of the pressure plate and preventing it from deviating during use, ensuring the punching accuracy of the press press. When the pressure plate contacts the two sliding plates, the two sliding plates are squeezed by the pressure plate and slide into the inner walls of the two sliding grooves. Simultaneously, several second springs contract, thereby limiting the pressure plate with two rubber pads at the top of the two limiting plates, preventing the pressure plate from continuing to press down and causing damage to the die.

[0004] The overload protection closed-type double-crankshaft precision punch press in the aforementioned patent has the following shortcomings: the protection components are not easy to disassemble and assemble; the protection components are subjected to pressure from the pressure plate for a long time, and the protection components may be damaged due to fatigue, deformation, or material fatigue; once the protection components fail, they cannot effectively protect the machine tool and its components in the event of an overload, which may lead to serious damage. Therefore, it is necessary to regularly remove the protection components for inspection, maintenance, or replacement. However, if the disassembly and assembly are difficult, it will consume a lot of time and manpower, affecting the overall efficiency of maintenance work. Therefore, it is necessary to design an overload protection structure for a closed-type double-crankshaft precision steel frame machine tool to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an overload protection structure for a closed-type double-crankshaft precision steel frame machine tool.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An overload protection structure for a closed-type double-crankshaft precision steel frame machine tool includes a closed-type double-crankshaft precision steel frame machine tool body. Mounting slots are provided on both sides of the machine tool body. Two locating pins are provided in each of the two mounting slots, and the locating pins are fixedly connected to the machine tool body. The two locating pins at the same end are fitted with the same base plate. T-shaped plates are fixedly connected to the two base plates on their adjacent sides. An overload protection mechanism is provided on the top of each of the two T-shaped plates. Side plates are fixedly connected to both sides of the base plate. Two sleeves are fixedly connected to the two side plates on their adjacent sides. Two movable plates are provided in the mounting slots. Two pins are fixedly connected to the movable plates on the side closest to the side plates. The pins are adapted to the sleeves. The top of the movable plates is inclined. The pressure plate of the closed-type double-crankshaft precision steel frame machine tool body is fixedly connected to both sides... The device includes two lifting plates, each with two fixed rods at its bottom. These rods, located at the same end, are fixedly connected to a common frame. Rollers are rotatably connected to both ends of the frame, positioned on an inclined plane. This design utilizes a technique where the overload protection mechanism is secured during the lowering of the lifting plates and released for removal during the raising of the lifting plates. Lowering the lifting plates allows the pin to be inserted into the sleeve to secure the overload protection mechanism, while raising the lifting plates allows the pin to be removed from the sleeve to release the mechanism. This effectively solves the problem mentioned in the background art where the protection components of existing equipment are difficult to disassemble and assemble, requiring significant time and manpower, thus affecting the overall efficiency of maintenance work. The device significantly improves the ease of disassembly and assembly, greatly simplifying the overload protection mechanism's disassembly and assembly process. Maintenance personnel can perform inspection and replacement operations more quickly, saving time and manpower and improving the overall efficiency of maintenance work.

[0007] As a further embodiment of this utility model, the overload protection mechanism includes a limiting shell, the inner wall of which is slidably connected to a limiting plate, and the bottom of the limiting plate is provided with two first springs.

[0008] As a further embodiment of this utility model, the limiting shell is fastened to the T-shaped plate by means of screws.

[0009] As a further embodiment of this utility model, two round rods are fixedly connected to the top of the T-shaped plate, the round rods are inserted through the first spring, and the round rods are slidably connected to the limiting plate.

[0010] As a further embodiment of this utility model, a fixing plate is provided in the mounting groove, and two guide rods are fixedly connected to both sides of the fixing plate. The guide rods pass through the moving plate, and two sliding grooves are opened on the moving plate. The guide rods are disposed in the sliding grooves, and the moving plate is slidably connected to the guide rods.

[0011] As a further embodiment of this invention, the guide rod is fitted with a second spring.

[0012] The beneficial effects of this utility model are as follows: Because the overload protection mechanism is secured during the lowering of the lifting platform and released for removal during the raising of the platform, the technology effectively solves the problem mentioned in the background art: existing equipment's upper protection components are difficult to disassemble and assemble, requiring significant time and manpower, thus affecting the overall efficiency of maintenance work. This significantly improves the ease of disassembly and assembly, greatly simplifying the overload protection mechanism's disassembly and assembly process. Maintenance personnel can perform inspection and replacement operations more quickly, saving time and manpower and improving the overall efficiency of maintenance work. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of an overload protection structure for a closed-type double-crankshaft precision steel frame machine tool proposed in this utility model. Figure 2 This is a front view schematic diagram of an overload protection structure for a closed-type double-crankshaft precision steel frame machine tool proposed in this utility model. Figure 3 This is a partial structural schematic diagram of an overload protection structure for a closed-type double-crankshaft precision steel frame machine tool proposed in this utility model; Figure 4 This is a partial cross-sectional schematic diagram of an overload protection structure for a closed-type double-crankshaft precision steel frame machine tool proposed in this utility model. Figure 5 This is a cross-sectional schematic diagram of the moving plate of the overload protection structure of a closed double-crankshaft precision steel frame machine tool proposed in this utility model.

[0014] In the diagram: 1. Closed-type double-crankshaft precision steel frame machine tool body; 2. Mounting slot; 3. Positioning pin; 4. Base plate; 5. T-shaped plate; 6. Overload protection mechanism; 601. Limiting housing; 602. Limiting plate; 603. First spring; 7. Side plate; 8. Sleeve; 9. Moving plate; 10. Pin; 11. Inclined surface; 12. Lifting plate; 13. Fixed rod; 14. Fixed frame; 15. Roller; 16. Fixed plate; 17. Guide rod; 18. Slide groove; 19. Second spring; 20. Round rod. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figure 1-5 An overload protection structure for a closed-type double-crankshaft precision steel frame machine tool includes a closed-type double-crankshaft precision steel frame machine tool body 1. Mounting slots 2 are provided on both sides of the machine tool body 1. Two positioning pins 3 are provided in each of the two mounting slots 2, and the positioning pins 3 are fixedly connected to the machine tool body 1. The two positioning pins 3 at the same end are fitted with the same base plate 4. T-shaped plates 5 are fixedly connected to the two base plates 4 on their adjacent sides. Overload protection mechanisms 6 are provided on the tops of the two T-shaped plates 5. Side plates 7 are fixedly connected to both sides of the base plate 4. Two sleeves 8 are fixedly connected to the two side plates 7 on their adjacent sides. Two movable plates 9 are provided in the mounting slots 2. Two pins 10 are fixedly connected to the movable plates 9 on the side closest to the side plates 7. The pins 10 are adapted to the sleeves 8. The top of the movable plates 9 is a slope 11. Lifting mechanisms are fixedly connected to both sides of the pressure plate of the closed-type double-crankshaft precision steel frame machine tool body 1. The lowering plate 12 has two fixed rods 13 fixedly connected to its bottom. The two fixed rods 13 at the same end are fixedly connected to the same fixed frame 14. Rollers 15 are rotatably connected to both ends of the fixed frame 14, and the rollers 15 are positioned at the inclined surface 11. Because the overload protection mechanism can be fixed during the lowering of the lifting plate and released to remove it during the raising of the lifting plate, the overload protection mechanism can be fixed by inserting a pin into the sleeve during lowering and removed by removing the pin from the sleeve during raising. This effectively solves the problem mentioned in the background art that the existing equipment's protection components are difficult to disassemble and assemble, requiring significant time and manpower, thus affecting the overall efficiency of maintenance work. This significantly improves the ease of disassembly and assembly, greatly simplifying the disassembly and assembly process of the overload protection mechanism. Maintenance personnel can perform inspection and replacement operations more quickly, saving time and manpower and improving the overall efficiency of maintenance work.

[0017] In this embodiment, the overload protection mechanism 6 includes a limiting shell 601, a limiting plate 602 is slidably connected to the inner wall of the limiting shell 601, and two first springs 603 are provided at the bottom of the limiting plate 602.

[0018] In this embodiment, the limiting shell 601 is fastened to the T-shaped plate 5 by means of screws.

[0019] In this embodiment, two round rods 20 are fixedly connected to the top of the T-shaped plate 5. The round rods 20 pass through the first spring 603 and are slidably connected to the limiting plate 602.

[0020] In this embodiment, a fixing plate 16 is provided in the mounting groove 2. Two guide rods 17 are fixedly connected to both sides of the fixing plate 16. The guide rods 17 pass through the moving plate 9. Two sliding grooves 18 are opened on the moving plate 9. The guide rods 17 are set in the sliding grooves 18. The moving plate 9 is slidably connected to the guide rods 17. When the moving plate 9 moves, it will move along the guide rods 17 to ensure the stability of the moving plate 9 when it moves.

[0021] In this embodiment, the guide rod 17 is fitted with a second spring 19. By setting the second spring 19, when no pressure is applied to the moving plate 9, the contracted second spring 19 will extend, which will enable the moving plate 9 to move away from the side plate 7.

[0022] Working principle: When using the closed-type double-crankshaft precision steel frame machine tool body 1, the pressure plate of the closed-type double-crankshaft precision steel frame machine tool body 1 descends, which in turn drives the lifting plate 12 to descend. The bottom of the lifting plate 12 will contact the top of the limiting plate 602, causing the pressure plate of the closed-type double-crankshaft precision steel frame machine tool body 1 to continue to descend. The lifting plate 12 will then drive the limiting plate 602 to descend. The limiting plate 602 will descend along the inner wall of the limiting housing 601 and the round rod 20. At the same time, the limiting plate 602 will compress the first spring 6. 03 causes the first spring 603 to contract. As the closed double-crankshaft precision steel frame machine tool body 1 continues to descend, the upper and lower molds contact each other for processing. When the overload protection mechanism 6 is installed, the lifting plate 12 is raised to its highest position. Then, the base plate 4 is placed on the positioning pin 3 for positioning, causing the lifting plate 12 to descend. The lifting plate 12 will drive the fixed rod 13 to descend, the fixed rod 13 will drive the fixed frame 14 to descend, and the fixed frame 14 will drive the roller 15 to descend. The roller 15 will then contact the moving plate 9. As the inclined plane 11 continues to descend, the lifting plate 12 will continue to descend, and the roller 15 will press against the inclined plane 11, allowing the two moving plates 9 to move closer to each other. The moving plates 9 will move along the guide rod 17 and press against the second spring 19, causing the second spring 19 to contract. When the moving plates 9 move, they will also drive the pin 10 to move. Inserting the pin 10 into the sleeve 8 will restrict the position of the side plate 7. Once the side plate 7 is fixed, the base plate 4 will also be fixed, thus fixing the T-shaped plate 5 and installing the overload protection mechanism 6. When the overload protection mechanism 6 needs to be removed for maintenance or replacement after a period of use, the lifting plate 12 will rise to its highest position. During this process, the roller 15 will move to the inclined plane 11. If the roller 15 continues to rise, the contracted second spring 19 will extend, allowing the two moving plates 9 to move away from each other. This will allow the pin 10 to be removed from the sleeve 8, thus releasing the restriction on the side plate 7. The base plate 4 can then be removed from the positioning pin 3, and the overload protection mechanism 6 can be inserted.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An overload protection structure for a closed-type double-crankshaft precision steel frame machine tool, comprising a closed-type double-crankshaft precision steel frame machine tool body (1), characterized in that, The closed-type double-crankshaft precision steel frame machine tool body (1) is provided with mounting slots (2) on both sides. Two positioning pins (3) are provided in each of the two mounting slots (2). The positioning pins (3) are fixedly connected to the closed-type double-crankshaft precision steel frame machine tool body (1). The two positioning pins (3) at the same end are fitted with the same base plate (4). T-shaped plates (5) are fixedly connected to the two base plates (4) on the side that is close to each other. Overload protection mechanisms (6) are provided on the top of the two T-shaped plates (5). Side plates (7) are fixedly connected to both sides of the base plate (4). Two sleeves (8) are fixedly connected to the two side plates (7) on the side that is close to each other. The mounting slots (2) The machine tool body (1) is equipped with two movable plates (9). Two pins (10) are fixedly connected to the movable plates (9) on the side near the side plate (7). The pins (10) are adapted to the sleeve (8). The top of the movable plates (9) is an inclined surface (11). Lifting plates (12) are fixedly connected to both sides of the pressure plate of the closed double crankshaft precision steel frame machine tool body (1). Two fixed rods (13) are fixedly connected to the bottom of the two lifting plates (12). The two fixed rods (13) at the same end are fixedly connected to the same fixed frame (14). Rollers (15) are rotatably connected to both ends of the fixed frame (14). The rollers (15) are set at the position of the inclined surface (11).

2. The overload protection structure for the closed-type double-crankshaft precision steel frame machine tool according to claim 1, characterized in that, The overload protection mechanism (6) includes a limiting shell (601), the inner wall of the limiting shell (601) is slidably connected to a limiting plate (602), and the bottom of the limiting plate (602) is provided with two first springs (603).

3. The overload protection structure for the closed-type double-crankshaft precision steel frame machine tool according to claim 2, characterized in that, The limiting shell (601) is fastened to the T-shaped plate (5) by means of screws.

4. The overload protection structure for the closed-type double-crankshaft precision steel frame machine tool according to claim 3, characterized in that, The top of the T-shaped plate (5) is fixedly connected to two round rods (20), which are inserted through the first spring (603) and are slidably connected to the limiting plate (602).

5. The overload protection structure for the closed-type double-crankshaft precision steel frame machine tool according to claim 1, characterized in that, A fixing plate (16) is provided in the mounting groove (2). Two guide rods (17) are fixedly connected to both sides of the fixing plate (16). The guide rods (17) pass through the moving plate (9). Two sliding grooves (18) are opened on the moving plate (9). The guide rods (17) are set in the sliding grooves (18). The moving plate (9) is slidably connected to the guide rods (17).

6. The overload protection structure for the closed-type double-crankshaft precision steel frame machine tool according to claim 5, characterized in that, The guide rod (17) is fitted with a second spring (19).

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