A fixture for laser cutting of small workpieces

Abstract

This utility model discloses a fixture for laser cutting of small workpieces, relating to the field of laser cutting technology. It includes a base, two clamping rods (arc-shaped, symmetrically arranged), and each clamping rod slidably inserted into one end of the base. A pull rod is mounted on the outer wall of each clamping rod. The base has two rail grooves matching the pull rods. A sliding frame is slidably mounted on the base, and the sliding frame has two sliding slots arranged in a straight line. The upper end of the pull rod is slidably mounted within the sliding slots. Moving the sliding frame causes the pull rod to slide within the rail grooves. By adjusting the distance between the two clamping rods, the workpiece is placed between the two clamping rods, bringing one end of each clamping rod close together to clamp the workpiece. The two clamping rods can clamp workpieces of various shapes, solving the problem of poor adaptability of existing fixtures for small workpieces, requiring different fixtures for different workpieces, leading to decreased production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting technology, specifically a fixture for laser cutting of small workpieces. Background Technology

[0002] Laser cutting of small workpieces is a processing technology that uses a laser beam to perform high-precision cutting of small metal or non-metal workpieces. It utilizes the heat generated by focusing a high-energy laser beam to heat the cutting area of ​​the workpiece to a melting or vaporizing state, thereby achieving efficient and precise cutting. Laser cutting is suitable for various materials, such as metals, plastics, ceramics, and glass, and has significant advantages, especially in precision machining, complex shape cutting, and thin plate cutting.

[0003] In the laser cutting of small workpieces, workpiece clamping is a crucial step that directly affects the cutting accuracy, quality, and efficiency. Due to the thermal effects and high-speed motion during laser cutting, the workpiece must be clamped stably and precisely to ensure that it does not shift, deform, or loosen during the cutting process.

[0004] Existing fixtures for small workpieces mostly use mechanical fixtures, but mechanical fixtures usually need to be specially designed according to the size and shape of the workpiece, thus having poor adaptability. If multiple types of workpieces need to be processed, different fixtures may need to be changed, leading to a decrease in production efficiency. To solve the above-mentioned problems, a fixture for laser cutting of small workpieces is provided. Utility Model Content

[0005] The purpose of this invention is to provide a fixture for laser cutting of small workpieces, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fixture for laser cutting of small workpieces, including a base;

[0007] The clamping rod is configured as two, with an arc-shaped structure. The two clamping rods are symmetrically arranged, and both clamping rods are slidably inserted into one end of the base. A tie rod is installed on the outer wall of the clamping rod, and the base has two rail grooves that match the tie rods.

[0008] The sliding frame is slidably mounted on the base. The sliding frame has two sliding grooves arranged in a straight line. The upper end of the pull rod is slidably mounted in the sliding groove. Moving the sliding frame causes the pull rod to slide in the groove. Adjusting the distance between the two clamping rods allows the workpiece to be placed between the two clamping rods, so that one end of the two clamping rods is close to each other to clamp the workpiece.

[0009] As a preferred technical solution of this utility model, one end of the base is rotatably connected to an adjusting screw, and the adjusting screw is threadedly connected to a sliding frame.

[0010] As a preferred technical solution of this utility model, one end of the clamping rod is rotatably connected to a clamping plate.

[0011] As a preferred technical solution of this utility model, a fixing screw for fixing the angle of the clamping plate is inserted at the rotatable connection between the clamping rod and the clamping plate, and a nut is threaded to one end of the fixing screw.

[0012] As a preferred technical solution of this utility model, the end face of the clamping plate is slidably inserted with a contact plate for contacting the workpiece.

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

[0014] This invention allows for the clamping of workpieces by placing the workpiece between two clamping rods, moving the sliding frame to drive the pull rod to slide within the rail groove, and adjusting the distance between the two clamping rods so that one end of the two clamping rods is close to each other. The two clamping rods can clamp workpieces of various shapes, solving the problem of poor adaptability of existing fixtures for small workpieces, which requires changing different fixtures for different workpieces, resulting in a decrease in production efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the clamp according to an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of the base according to an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the overall structure of the sliding frame according to an embodiment of the present utility model;

[0018] Figure 4 This is a partial cross-sectional view of the base structure according to an embodiment of the present utility model;

[0019] Figure 5 This is a schematic diagram of the overall structure of the clamping rod according to an embodiment of the present utility model.

[0020] In the diagram: 1. Base; 11. Rail groove; 12. Adjusting screw; 2. Clamping rod; 21. Pull rod; 3. Sliding frame; 31. Slide groove; 4. Clamping plate; 41. Fixing screw; 42. Contact plate. 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] Please see Figure 1-5 This embodiment provides a fixture for laser cutting small workpieces, including a base 1. The base 1 is mounted on a laser cutting platform via screws, such as... Figure 1 As shown, one end of the base 1 has two arc-shaped sliding cavities, and each cavity contains a clamping rod 2, which is also arc-shaped. The two clamping rods 2 are symmetrically arranged, and the two clamping rods 2 and the two sliding cavities share the same center. A sliding frame 3 is slidably mounted on the base 1, which is used to synchronously control the sliding of the two clamping rods 2.

[0023] Specifically, pull rods 21 are installed on both the upper and lower surfaces of clamping rod 2, and rail grooves 11 are opened on both the upper and lower sides of the sliding cavity of base 1. The pull rods 21 of clamping rod 2 are slidably installed in the rail grooves 11, and the clamping rod 2 can be slid by pulling the pull rods 21. Figure 1 and Figure 3 As shown, the sliding frame 3 has four sliding grooves 31, all located on the same vertical plane, and the sliding grooves 31 on the same horizontal plane are arranged in a straight line. One end of the pull rod 21 is slidably installed in the sliding groove 31. Moving the sliding frame 3 drives the pull rod 21 to slide in the rail groove 11 through the sliding groove 31, thereby driving the clamping rod 2 to slide.

[0024] like Figures 1 to 3 As shown, an adjusting screw 12 is rotatably connected to the end of the base 1 away from the opening of the sliding cavity. The adjusting screw 12 is threaded to one end of the sliding frame 3. By rotating the adjusting screw 12, the sliding frame 3 can be driven to slide on the base 1.

[0025] In use, place the workpiece at the gap between one end of the two clamping rods 2, rotate the adjusting screw 12 to drive the sliding frame 3 to move towards the opening of the sliding cavity of the base 1, so that the clamping rods 2 extend from one end of the base 1 to contact the workpiece. By tightening the adjusting screw 12, the two clamping rods 2 can be driven to clamp the workpiece.

[0026] However, in actual operation, it was found that the clamping rod 2 made single-point contact with the workpiece, resulting in poor stability. In order to increase the contact area with the workpiece, a clamping plate 4 was rotatably connected to one end of the clamping rod 2. The clamping plate 4 changed the clamping rod 2 from point contact with the workpiece to surface contact with the workpiece, which increased the contact area with the workpiece and further increased the stability of clamping the workpiece.

[0027] like Figure 5 As shown, a fixing screw 41 is slidably inserted at the rotational connection between the clamping rod 2 and the clamping plate 4. The fixing screw 41 extends from the lower end of the rotational connection between the clamping rod 2 and the clamping plate 4, and a nut is threadedly connected to the extended part of the fixing screw 41. By tightening the fixing screw 41, the friction coefficient between the clamping rod 2 and the clamping plate 4 can be increased, thereby damping and fixing the clamping plate 4 to maintain the clamping state of the workpiece.

[0028] like Figure 4As shown, a contact plate 42 is slidably inserted into the end face of the clamping plate 4. The contact plate 42 is used to contact the workpiece. To accommodate workpieces of different shapes and structures, the contact plate 42 is configured in various ways, including... Figure 5 The image shows a contact plate 42 with an adhesive surface and a contact plate 42 with contact points. The contact plate 42 with an adhesive surface is a type of contact plate 42 with an adhesive rubber surface, which flexibly contacts the workpiece to prevent damage to the workpiece surface. The contact plate 42 with contact points is suitable for workpieces with irregular shapes, facilitating the clamping of various workpieces. Of course, both the contact plate 42 with an adhesive surface and the contact plate 42 with contact points are general-purpose components suitable for most workpieces, but the contact plate 42 is not limited to these two types and can be customized according to the appearance and shape of the workpiece.

[0029] Two symmetrical clamping rods 2 and a sliding frame 3 constitute a set of clamping components. The base 1 is not limited to a single set of clamping components; multiple sets of clamping components can be stacked one on top of the other. Theoretically, the more clamping components there are, the more workpiece clamping surfaces there are, and the more stable the workpiece clamping will be.

[0030] Compared to existing mechanical fixtures, the design of using two clamping rods 2 to hold workpieces offers greater adaptability, accommodating various workpiece shapes and sizes, significantly improving the fixture's versatility. The core advantage of this design lies in its flexibility, allowing for rapid adjustments based on the needs of different workpieces, thus meeting the requirements of various processing conditions and avoiding the problems caused by size mismatches when fixing workpieces in traditional mechanical fixtures. For example, when clamping workpieces with irregular shapes or varying thicknesses, the clamping rods 2 can be easily adjusted, resulting in more precise clamping, reducing the frequency of fixture modifications, and improving production efficiency. Furthermore, the clamping rods 2 adjust the clamping force by rotating the adjusting screw 12. This design provides a large adjustment range, allowing for precise control of the clamping force according to the workpiece's material and processing requirements. In traditional mechanical fixtures, excessive clamping force can cause workpiece surface deformation or scratches, while insufficient clamping force can lead to workpiece loosening or instability. By adjusting screw 12, users can precisely control the clamping force according to actual needs, ensuring the stability and safety of clamping. This is especially effective for fragile or precision workpieces, preventing surface damage and deformation.

[0031] Because the two clamping rods 2 have an arc-shaped structure, a semi-circular space is created in the middle of the two clamping rods 2. This space is designed as a cutting tolerance space. This tolerance space not only provides the necessary clearance for the laser cutting process, but also effectively avoids direct contact between the tool and the fixture during the cutting process, ensuring the smooth progress of the cutting operation. Specifically, when the workpiece is being cut, except for the contact points between the workpiece and the clamping rods 2 on both sides, the remaining area is reserved as space, which is the cutting gap. This design effectively ensures the safety of the workpiece edge during laser cutting, avoids direct contact between the laser beam and the fixture surface, and prevents fixture damage due to residual heat or high temperature during cutting. In addition, this design also improves the thermal management capability during the cutting process. Due to the large gap between the fixture and the workpiece, heat can be better dispersed, preventing local overheating or deformation of the workpiece caused by high temperature concentration. In summary, the arc-shaped structure and tolerance space design of the clamping rods 2 not only improve clamping stability and cutting accuracy, but also protect the fixture and the workpiece, ensuring the smooth progress of the laser cutting process.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixture for laser cutting of small workpieces, characterized in that, include: Base (1); Two clamps (2) are provided. The clamps (2) are arc-shaped and the two clamps (2) are symmetrically arranged. Both clamps (2) are slidably inserted into one end of the base (1). A pull rod (21) is installed on the outer wall of the clamp (2). The base (1) has two rail grooves (11) that match the pull rod (21). The sliding frame (3) is slidably installed on the base (1). The sliding frame (3) has two sliding grooves (31) arranged in a straight line. The upper end of the pull rod (21) is slidably installed in the sliding groove (31). Moving the sliding frame (3) drives the pull rod (21) to slide in the rail groove (11). Adjust the distance between the two clamping rods (2) and place the workpiece between the two clamping rods (2) so that one end of the two clamping rods (2) is close to each other to clamp the workpiece.

2. A fixture for laser cutting of small workpieces according to claim 1, characterized in that: One end of the base (1) is rotatably connected to an adjusting screw (12), and the adjusting screw (12) is threadedly connected to a sliding frame (3).

3. A fixture for laser cutting of small workpieces according to claim 1, characterized in that: One end of the clamping rod (2) is rotatably connected to a clamping plate (4).

4. A fixture for laser cutting of small workpieces according to claim 3, characterized in that: A fixing screw (41) for fixing the angle of the clamp (4) is inserted into the rotatable connection between the clamp (2) and the clamp (4), and a nut is threaded onto one end of the fixing screw (41).

5. A fixture for laser cutting of small workpieces according to claim 4, characterized in that: The end face of the clamp (4) is slidably inserted with a contact plate (42) for contacting the workpiece.

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