An adjustable clamping device, welding equipment, and cutting equipment

Abstract

An adjustable clamping device, namely a welding or cutting device, relates to the field of machine tool clamping device technology. It includes: a rotatable four-jaw self-centering chuck supported by a base, having four fixed seats evenly distributed around the rotational axis of the chuck, the four fixed seats being configured to synchronously move closer to or further away from the rotational axis; the adjustable clamping device further includes clamping assemblies corresponding to each fixed seat, the clamping assemblies including adjusting seats and jaws; the adjusting seats have first toothed portions, and the jaws have second toothed portions that mesh with the first toothed portions; the second toothed portions can mesh with the first toothed portions at different positions, so that the distance between the clamping portions of the two jaws in relative positions is adapted to the shape of the workpiece to be clamped, improving work efficiency. The aforementioned welding or cutting equipment includes the adjustable clamping device described above.

Description

Technical Field

[0001] This utility model relates to the technical field of machine tool clamping devices, specifically to an adjustable clamping device and welding and cutting equipment. Background Technology

[0002] In actual production, welding or cutting equipment often switches the type of parts to be processed, for example, from square tubes with square cross-sections to rectangular tubes with rectangular cross-sections.

[0003] Commonly used four-jaw chucks include four-jaw single-action chucks and four-jaw self-centering chucks. In a four-jaw single-action chuck, each jaw can move independently along the slide on the chuck body. Although it can adapt to the clamping needs of workpieces with different shapes, it does not have an automatic centering function, the adjustment process is cumbersome, and the work efficiency is low.

[0004] A four-jaw self-centering chuck with automatic centering function includes a disc body, a screw thread, and four small bevel teeth. The four small bevel teeth mesh with the screw thread. When the small bevel teeth rotate, the screw thread rotates accordingly. The flat thread on the back of the screw thread drives four fixed seats to synchronously move closer to or away from the rotation center axis. This four-jaw self-centering chuck has high clamping and unclamping efficiency, but it is not suitable for clamping workpieces of different shapes.

[0005] Therefore, it is necessary to design an adjustable clamping device, welding equipment, and cutting equipment that has a self-centering function and can adapt to the clamping needs of workpieces with different shapes. Utility Model Content

[0006] This utility model addresses the aforementioned technical problems in the prior art by providing an adjustable clamping device and welding / cutting equipment. It features automatic centering and can adapt to the clamping requirements of workpieces with different shapes, thereby improving work efficiency.

[0007] To achieve the above technical objectives, this utility model provides an adjustable clamping device, comprising:

[0008] A rotatable four-jaw self-centering chuck has four fixed seats evenly distributed around the rotational central axis of the chuck, the four fixed seats being configured to synchronously move closer to or further away from the rotational central axis; characterized in that:

[0009] The adjustable clamping device further includes clamping components corresponding to the fixed seats. The clamping components include an adjusting seat and a jaw. The adjusting seat is provided with a first toothed portion, and the jaw is provided with a second toothed portion that meshes with the first toothed portion. The second toothed portion can mesh with the first toothed portion at different positions so that the spacing between the clamping portions of the jaws in relative positions is adapted to the shape of the workpiece to be clamped.

[0010] Furthermore, the adjusting seat is provided with a radially extending T-shaped groove;

[0011] The T-slot is equipped with a locking block.

[0012] The claw is connected to the block.

[0013] Furthermore, the claw and the block are connected by fasteners.

[0014] Furthermore, the first toothed portion and the second toothed portion have the same tooth shape.

[0015] Furthermore, the tooth spacing between the first toothed portion and the second toothed portion is 1 mm.

[0016] Furthermore, both the first toothed portion and the second toothed portion extend in the radial direction.

[0017] Furthermore, the length of the first toothed portion in the radial direction is greater than the corresponding length of the second toothed portion.

[0018] Another aspect of this utility model provides a welding device, including the adjustable clamping device as described above.

[0019] Another aspect of this utility model provides a cutting device, including the adjustable clamping device described above.

[0020] One or more technical solutions provided in this utility model embodiment have at least the following technical effects or advantages: An adjustable clamping device has an automatic centering function and can adapt to the clamping requirements of workpieces with different shapes. When switching from clamping a square tube to clamping a rectangular tube, the relative position between the jaw and the adjusting seat can be adjusted, which improves work efficiency, and vice versa. Attached Figure Description

[0021] Figure 1 This is a perspective view of an adjustable clamping device according to an embodiment of the present invention.

[0022] Figure 2 for Figure 1 The right view.

[0023] Figure 3 for Figure 1 A sectional view.

[0024] Figure 4 for Figure 3 Enlarged view of the clamping component.

[0025] Figure 5 This is a schematic diagram of the adjustable clamping device of this utility model used for clamping square tubes.

[0026] Figure 6 This is a schematic diagram of the adjustable clamping device of this utility model used for clamping rectangular tubes.

[0027] Explanation of reference numerals in the attached figures

[0028] 10. Frame; 20. Spindle; 30. Four-jaw self-centering chuck; 40. Fixed seat; 50. Clamping assembly; 60. Adjusting seat; 61. First toothed part; 62. T-slot; 70. Clamping block; 80. Clamping jaw; 81. Second toothed part; 82. Clamping part; a. Rotation center shaft. Detailed Implementation

[0029] Other objects and advantages of this utility model will become clear by explaining the preferred embodiments of the present application below.

[0030] like Figures 1-4 As shown, an adjustable clamping device includes a frame 10, a spindle 20, and a four-jaw self-centering chuck 30. The four-jaw self-centering chuck 30 has four fixed seats 40 evenly distributed around its rotational central axis a. These four fixed seats 40 are configured to synchronously move closer to or further away from the rotational central axis a. The internal structure of the four-jaw self-centering chuck 30 is prior art. The spindle 20 and the frame 10 are connected, for example, via bearings.

[0031] In this utility model, the adjustable clamping device further includes a clamping component 50 corresponding to the fixed base 40. The clamping component 50 includes an adjusting base 60 and a jaw 80. The adjusting base 60 is provided with a first toothed portion 61, and the jaw 80 is provided with a second toothed portion 81 that meshes with the first toothed portion 61. The second toothed portion 81 can mesh with the first toothed portion 61 at different positions so that the spacing between the clamping portions 82 of the jaws 80 in relative positions is adapted to the shape of the workpiece to be clamped.

[0032] like Figure 5 As shown, when clamping a workpiece with a square cross-section, the distance L1 between the clamping portions 82 of jaws 80a and 80c, which are in relative positions, is the same as the distance L2 between the clamping portions 82 of jaws 80b and 80d. Therefore, by operating the four-jaw self-centering chuck 3030, the relative positions of each jaw 80a, 80b, 80c, and 80d with the rotation center axis a can be adjusted synchronously, thus achieving the clamping of the square workpiece.

[0033] like Figure 6As shown, when clamping a workpiece with a rectangular cross-section, the distance L1 between the clamping portions 82 of jaws 80a and 80c, which are in relative positions, is greater than the distance L2 between the clamping portions 82 of jaws 80b and 80d. Furthermore, by operating the four-jaw self-centering chuck 30, the relative positions of each jaw 80a, 80b, 80c, and 80d with the rotation center axis a can be adjusted synchronously, thus achieving the clamping of rectangular workpieces.

[0034] like Figure 1 As shown, the adjusting seat 60 has a radially extending T-shaped groove 62; a locking block 70 is provided in the T-shaped groove 62, and the locking claw 80 is connected to the locking block 70. The locking block 70 also has a T-shaped structure and can be embedded in the T-shaped groove 62. Further, the locking claw 80 and the locking block 70 are connected by fasteners, such as screws. Loosening the screw disengages the first toothed portion 61 and the second toothed portion 81, thereby adjusting the radial position of the locking claw 80. After measuring the distance between the clamping portions 82 of the locking claws 80 on opposite sides to a preset position, the screw is tightened to engage the first toothed portion 61 and the second toothed portion 81, keeping the position of the locking claw 80 and the adjusting seat 60 relatively fixed.

[0035] Furthermore, the first toothed portion 61 and the second toothed portion 81 have the same tooth shape, preferably a triangular tooth structure, which facilitates switching the relative meshing positions of the second toothed portion 81 and the first toothed portion 61, and allows meshing to be achieved at any position. Furthermore, both the first toothed portion 61 and the second toothed portion 81 extend radially. Even further, the radial length of the first toothed portion 61 is greater than the corresponding length of the second toothed portion 81, increasing the adjustment range.

[0036] Furthermore, the tooth spacing D of both the first toothed portion 61 and the second toothed portion 81 is 1mm, thereby allowing the spacing value of the clamping portion 82 of the opposite side jaws 80 to be adjusted by moving a certain number of teeth, and the value can be read directly, which is convenient and quick. For example, by moving the jaws 80 and the adjusting seat 60 by moving three relative teeth, a relative position of 3mm can be achieved, that is, the relative distance value of the movement can be read by the number of teeth, without the need for remeasurement.

[0037] Another aspect of this utility model provides a welding device, including the adjustable clamping device described above. Yet another aspect of this utility model provides a cutting device, including the adjustable clamping device described above. That is, the structure of this utility model can be applied to welding equipment, cutting equipment, or other equipment that requires workpiece clamping. After adopting the adjustable clamping device described above, the aforementioned welding and cutting equipment can adapt to the clamping requirements of workpieces with different shapes, thereby improving work efficiency.

[0038] The apparatus of this application has been described in detail with reference to the preferred technical solutions. However, it should be noted that, without departing from the spirit of this application, those skilled in the art can make any modifications, alterations, and variations based on the above disclosure. This application includes the above-described specific embodiments and any equivalent forms thereof.

Claims

1. An adjustable clamping device, comprising: A rotatable four-jaw self-centering chuck (30) has four fixed seats (40) evenly distributed around a rotational central axis (a) of the four-jaw self-centering chuck (30), the four fixed seats (40) being configured to synchronously move closer to or further away from the rotational central axis (a); characterized in that: The adjustable clamping device further includes clamping components (50) corresponding to the fixed base (40) one by one. The clamping components (50) include an adjusting base (60) and a jaw (80). The adjusting base (60) is provided with a first toothed portion (61), and the jaw (80) is provided with a second toothed portion (81) that meshes with the first toothed portion (61). The second toothed portion (81) can mesh with the first toothed portion (61) at different positions so that the distance between the clamping portions (82) of the two jaws (80) in relative positions is adapted to the shape of the workpiece to be clamped.

2. The adjustable clamping device as described in claim 1, characterized in that, The adjusting seat (60) is provided with a radially extending T-slot (62); The T-slot (62) is provided with a locking block (70). The claw (80) is connected to the block (70).

3. The adjustable clamping device as described in claim 2, characterized in that, The claw (80) and the block (70) are connected by fasteners.

4. The adjustable clamping device as described in claim 1, characterized in that, The first toothed portion (61) and the second toothed portion (81) have the same tooth shape.

5. The adjustable clamping device as described in claim 4, characterized in that, The tooth spacing of the first toothed portion (61) and the second toothed portion (81) is 1 mm.

6. The adjustable clamping device as described in claim 1, characterized in that, Both the first toothed portion (61) and the second toothed portion (81) extend in the radial direction.

7. The adjustable clamping device as described in claim 1, characterized in that, The length of the first toothed portion (61) in the radial direction is greater than the corresponding length of the second toothed portion (81).

8. A welding device, characterized in that, Includes the adjustable clamping device as described in any one of claims 1 to 7.

9. A cutting device, characterized in that, Includes the adjustable clamping device as described in any one of claims 1 to 7.

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