Thin plate multi-point distributed horizontal clamping fixture

Abstract

The multi-point distribution type horizontal clamping fixture comprises a base, the top of the base is connected with a machining table, two sets of sliding grooves are formed in the center of the top of the machining table, moving blocks are connected into the sliding grooves in a sliding mode, and clamping blocks used for clamping the thin plates are arranged at the tops of the moving blocks. A plurality of clamping rods are arranged in the clamping block, springs are connected to the ends, located in the clamping block, of the clamping rods, one ends of the springs are fixed into the clamping block through fixing pieces, the fixing pieces comprise bolts and fixing plates, the bolts are rotationally connected into the clamping block, one ends of the springs are connected with the fixing plates, and the ends, located in the clamping block, of the bolts are in threaded connection with the fixing plates. The clamp is connected with the spring through the bolt and the fixing plate, the bolt is rotationally connected into the clamping block and is in threaded connection with the fixing plate, when the elasticity of the spring is reduced, the fixing plate and the spring can be pulled out of the clamping block only by screwing the bolt, the spring can be conveniently and independently replaced, the maintenance cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of thin plate processing technology, specifically relating to a multi-point distributed horizontal clamping fixture for thin plates. Background Technology

[0002] Thin sheet metal parts require clamping during milling to prevent movement and maintain machining accuracy. Most commonly used clamps are multi-point distributed horizontal clamps. These clamps apply clamping force to irregularly shaped thin sheet metal parts relatively evenly through multiple distributed clamping points, effectively reducing deformation caused by uneven local force. Compared with traditional single-point or few-point clamping methods, they significantly improve machining accuracy.

[0003] Existing fixtures for irregularly shaped thin plates often use springs as their elastic connecting components. The spring force allows the clamping blocks to fit against the irregularly shaped thin plate parts and clamp them. However, after long-term use, due to factors such as material fatigue and stress relaxation, the elastic restoring force will gradually decrease. As the fixture is frequently opened and closed, the springs are continuously subjected to alternating loads. After a certain number of cycles, the elastic performance of some springs will decrease, causing the clamping blocks connected to them to fail to make sufficient contact with the irregularly shaped thin plate. This not only reduces the stability of the fixture during clamping and makes the workpiece prone to displacement during processing, seriously affecting the processing accuracy, but may also lead to an increase in the scrap rate and production costs. Utility Model Content

[0004] The purpose of this invention is to provide a multi-point distributed horizontal clamping fixture for thin plates to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-point distributed horizontal clamping fixture for thin plates, comprising:

[0006] The base has a processing table connected to its top, and two sets of sliding grooves are provided at the center of the top of the processing table. A movable block is slidably connected in the sliding groove, and a clamping block for clamping thin sheet metal is provided on the top of the movable block. Several clamping rods are provided in the clamping block, and a spring is connected to one end of the clamping rod inside the clamping block. One end of the spring is fixed in the clamping block by a fixing member, which includes a bolt and a fixing plate. The bolt is rotatably connected in the clamping block, one end of the spring is connected to the fixing plate, and the end of the bolt inside the clamping block is threadedly connected to the fixing plate.

[0007] Preferably, the clamping block is provided with a plurality of threaded cylinders and bolts are threadedly connected to the threaded cylinders, the fixing plate is provided with threaded holes, and the bolts are threadedly connected to the threaded holes.

[0008] Preferably, the clamping block is provided with a plurality of sleeves and the clamping rod is slidably connected to the sleeves, and the spring is provided inside the sleeves.

[0009] Preferably, one end of the clamping block is fixed to a protective plate by screws, and the surface of the protective plate is evenly distributed with a plurality of sealing rings.

[0010] Preferably, the sealing ring is provided with a magnetic ring, and one end of the clamping rod movably passes through the sealing ring and the magnetic ring.

[0011] Preferably, both ends of the processing table are equipped with cylinders, and the piston rods of the cylinders move through the processing table and are connected to the moving block.

[0012] Preferably, the bottom of the movable block is connected to a slider, and the slider is slidably connected to the guide groove in the processing table.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) The clamp is connected to the spring by bolts and a fixing plate. The bolts are rotated and connected to the clamping block and threaded to the fixing plate. When the spring elasticity decreases, the fixing plate and the spring can be pulled out from the clamping block by simply turning the bolts, which makes it convenient to replace the spring separately, reduces maintenance costs and improves production efficiency.

[0015] (2) The clamping block is equipped with several clamping rods. The clamping rods are in close contact with the thin plate by the elastic force of the spring. Multiple clamping rods form multi-point distributed clamping, which evenly distributes the clamping force and effectively avoids the deformation of the thin plate due to uneven local force. Even if the elasticity of some springs decreases slightly, the other normal clamping rods can still maintain a stable clamping force, ensuring the stability of the fixture during clamping, improving the processing accuracy, and reducing the scrap rate.

[0016] (3) A protective plate is installed at one end of the clamping block, and a sealing ring is evenly distributed on the surface. A magnetic ring is provided on the sealing ring. The protective plate prevents impurities such as iron filings and coolant generated during the processing from entering the interior of the clamping block, protecting components such as springs and clamping rods. The magnetic ring can attract iron filings, further preventing iron filings from damaging the clamping components and extending the service life of the clamp. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the clamping block of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of this utility model after the bolts are detached from the fixing plate;

[0020] Figure 4 This is a side view of the protective plate of this utility model.

[0021] In the diagram: 1. Base; 2. Machining table; 3. Slide groove; 4. Moving block; 5. Clamping block; 6. Clamping rod; 7. Spring; 8. Bolt; 9. Threaded cylinder; 10. Threaded hole; 11. Sleeve; 12. Protective plate; 13. Sealing ring; 14. Magnetic ring; 15. Cylinder; 16. Slider; 17. Guide groove; 18. Fixing plate. Detailed Implementation

[0022] 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.

[0023] This utility model provides, for example Figure 1-4 The multi-point distributed horizontal clamping fixture for thin sheet metal shown includes:

[0024] The base 1 has a processing table 2 connected to its top, and two sets of sliding grooves 3 are provided at the center of the top of the processing table 2. A moving block 4 is slidably connected in the sliding groove 3, and a clamping block 5 for clamping thin plates is provided on the top of the moving block 4. Several clamping rods 6 are provided in the clamping block 5, and a spring 7 is connected to one end of the clamping rod 6 inside the clamping block 5. One end of the spring 7 is fixed in the clamping block 5 by a fixing member, which includes a bolt 8 and a fixing plate 18. The bolt 8 is rotatably connected in the clamping block 5, and one end of the spring 7 is connected to the fixing plate 18. The end of the bolt 8 inside the clamping block 5 is threadedly connected to the fixing plate 18.

[0025] The clamping block 5 is provided with several threaded cylinders 9 and bolts 8 are threadedly connected to the threaded cylinders 9. The fixing plate 18 is provided with threaded holes 10, and the bolts 8 are threadedly connected to the threaded holes 10.

[0026] The clamping block 5 is provided with a plurality of sleeves 11 and the clamping rod 6 is slidably connected to the sleeves 11. The spring 7 is provided inside the sleeves 11.

[0027] One end of the clamping block 5 is fixed with a protective plate 12 by screws. Several sealing rings 13 are evenly distributed on the surface of the protective plate 12. A magnetic ring 14 is provided on the sealing ring 13. One end of the clamping rod 6 movably passes through the sealing ring 13 and the magnetic ring 14. The sealing ring 13 can ensure the sealing between the clamping rod 6 and the clamping block 5 and prevent liquid or debris from entering the clamping block 5.

[0028] Both ends of the processing table 2 are equipped with cylinders 15, and the piston rod of the cylinder 15 moves through the processing table 2 and is connected to the moving block 4.

[0029] The bottom of the movable block 4 is connected to a slider 16, and the slider 16 is slidably connected to the guide groove 17 in the processing table 2. The guide groove 17 provides a specific movement trajectory for the slider 16, so that the movable block 4 can only move along the direction of the guide groove 17. This ensures that the movable block 4 moves accurately along the predetermined path during the processing, thus guaranteeing the precision and accuracy of the processing.

[0030] Before processing the irregularly shaped thin sheet, the multi-point distributed horizontal clamping fixture for thin sheet is activated by cylinder 15. Cylinder 15 starts working according to the preset program or the operator's instructions. Its piston rod extends or retracts. The movement of the piston rod drives the moving block 4 connected to it to slide in the slide groove 3 on the top of the processing table 2. Since the slide groove 3 restricts the movement of the moving block 4, the moving block 4 can only move in a straight line along the direction of the slide groove 3. As the moving block 4 moves, the clamping block 5 installed on its top also moves closer to or away from the irregularly shaped thin sheet. When the clamping block 5 gradually approaches the thin sheet, the clamping rod 6 in the clamping block 5 begins to contact the surface of the thin sheet under the elastic force of the spring 7. The spring 7 is elastic and will adaptively adjust the extension length and contact force of the clamping rod 6 according to the shape and position of the irregularly shaped thin sheet surface. Multiple clamping rods 6 apply clamping force to the thin sheet from different positions to achieve multi-point distributed clamping, clamping and fixing the irregularly shaped thin sheet on the processing table 2 for subsequent processing.

[0031] When installing spring 7, first install one end of spring 7 connected to fixing plate 18 into sleeve 11. Then, pass bolt 8 through threaded cylinder 9 in clamping block 5 so that bolt 8 and threaded cylinder 9 are threadedly engaged. Next, screw one end of bolt 8 into threaded hole 10 on fixing plate 18. By rotating bolt 8, spring 7 and fixing plate 18 are gradually fixed in the appropriate position in sleeve 11. When spring 7 needs to be replaced, the operation process is reversed. Use a tool to rotate bolt 8 in the opposite direction so that bolt 8 is gradually removed from threaded hole 10 of fixing plate 18. As bolt 8 is removed, the fixing force on fixing plate 18 and spring 7 gradually decreases. When bolt 8 is completely removed, fixing plate 18 and spring 7 can be pulled out from clamping block 5. Then, the new spring 7 is re-fixed in clamping block 5 according to the above installation steps to complete the replacement of spring 7.

[0032] During subsequent milling, a large amount of iron filings and coolant impurities are generated. The protective plate 12, acting as a protective barrier for the fixture, first and foremost blocks these impurities. Installed at one end of the clamping block 5, the protective plate 12 effectively prevents impurities from entering the clamping block 5. When iron filings and coolant splash, the protective plate 12 directly blocks their path. Simultaneously, the evenly distributed sealing rings 13 on the surface of the protective plate 12 further enhance the protective effect. The sealing rings 13 are elastic and fit tightly against the gap between the protective plate 12 and the clamping block 5, filling any tiny gaps and preventing small impurities from entering the clamping block 5 through these gaps. The magnetic ring 14 on the sealing ring 13 uses its own magnetism to attract iron filings. Even if a small amount of iron filings breaks through the barrier of the protective plate 12, the magnetic ring 14 can attract them and prevent them from moving further into the clamping block 5. This protects the key components such as the spring 7 and the clamping rod 6 inside the clamping block 5 from wear and corrosion caused by iron filings, thus extending the service life of the clamp. When the protective plate 12 needs to be cleaned after long-term use, the screws can be loosened with tools to gradually reduce the fixing force between the protective plate 12 and the clamping block 5. After all the screws are loosened, the protective plate 12 can be removed from the clamping block 5 for disassembly and cleaning, which is quite convenient.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-point distributed horizontal clamping fixture for thin plate parts, characterized in that, include: A base (1) is connected to a processing table (2) at the top of the base (1), and two sets of sliding grooves (3) are provided at the center of the top of the processing table (2). A moving block (4) is slidably connected in the sliding groove (3), and a clamping block (5) for clamping thin plate parts is provided on the top of the moving block (4). Several clamping rods (6) are provided in the clamping block (5), and a spring (7) is connected to one end of the clamping rod (6) located in the clamping block (5). One end of the spring (7) is fixed in the clamping block (5) by a fixing member. The fixing member includes a bolt (8) and a fixing plate (18). The bolt (8) is rotatably connected in the clamping block (5). One end of the spring (7) is connected to the fixing plate (18). The end of the bolt (8) located in the clamping block (5) is threadedly connected to the fixing plate (18).

2. The multi-point distributed horizontal clamping fixture for thin plates according to claim 1, characterized in that: The clamping block (5) is provided with several threaded cylinders (9) and the bolts (8) are threadedly connected to the threaded cylinders (9). The fixing plate (18) is provided with threaded holes (10) and the bolts (8) are threadedly connected to the threaded holes (10).

3. The multi-point distributed horizontal clamping fixture for thin plates according to claim 1, characterized in that: The clamping block (5) is provided with a plurality of sleeves (11) and the clamping rod (6) is slidably connected to the sleeves (11), and the spring (7) is provided inside the sleeves (11).

4. The multi-point distributed horizontal clamping fixture for thin plates according to claim 1, characterized in that: One end of the clamping block (5) is fixed with a protective plate (12) by screws, and a number of sealing rings (13) are evenly distributed on the surface of the protective plate (12).

5. A multi-point distributed horizontal clamping fixture for thin plates according to claim 4, characterized in that: The sealing ring (13) is provided with a magnetic ring (14), and one end of the clamping rod (6) movably passes through the sealing ring (13) and the magnetic ring (14).

6. A multi-point distributed horizontal clamping fixture for thin plates according to claim 1, characterized in that: The processing table (2) is equipped with cylinders (15) at both ends, and the piston rod of the cylinder (15) moves through the processing table (2) and is connected to the moving block (4).

7. A multi-point distributed horizontal clamping fixture for thin plates according to claim 1, characterized in that: The bottom of the moving block (4) is connected to a slider (16), and the slider (16) is slidably connected to the guide groove (17) in the processing table (2).

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