Square tube clamping device

Abstract

The utility model relates to metal processing technical field especially relates to a square pipe clamping device, including four jaw chucks who is composed of cylindrical sleeve, cylinder, disc and apron, the cylinder sets up in the bottom of cylindrical sleeve, the disc sets up in the inner top of cylindrical sleeve, the top center position of disc is equipped with the axle hole, the axle hole inside slide installation has round bar, the top of round bar is equipped with cone, the cylinder is used for driving round bar to move up and down, the top of cylindrical sleeve is evenly provided with at least three T type grooves in the circumference, each T type groove inside slide installation has sliding block, each sliding block top is fixedly installed with clamping block, drives round bar through the cylinder, thereby drives cone to move up and down, so can limit sliding block only centripetal or centrifugal sliding in horizontal direction through T type groove, because the sliding block is provided with swallow -tail strip, and the cone is provided with swallow -tail groove, so when the cone moves, will drive sliding block centripetal or centrifugal movement.

Description

Technical Field

[0001] This utility model relates to the field of metal processing technology, and in particular to a square tube clamping device. Background Technology

[0002] Rectangular square tubes, also known as square steel pipes, are a type of square tubing used in industries such as construction, machinery manufacturing, shipbuilding, hardware, and steel structure engineering. Rectangular square tubes are generally produced according to fixed specifications and are quite long, requiring them to be cut into appropriate lengths for use. After cutting, depending on the process and the application, holes need to be drilled on different surfaces at different locations within the square tube.

[0003] The existing technical solutions have the following drawbacks: they cannot adapt well to and clamp objects with polygonal cross sections. Conventional four-jaw chucks do not require manual assistance to place the square tube in a certain position before they can be clamped by the four-jaw chuck. Utility Model Content

[0004] The purpose of this invention is to provide a square tube clamping device to solve the problems existing in the prior art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A square tube clamping device includes a cylindrical sleeve, a cylinder, a disc, and a cover plate. The axes of the disc and the cylindrical sleeve are both vertically aligned. The cylinder is located at the bottom of the cylindrical sleeve, and the disc is located at the top of the cylindrical sleeve. A through-hole is located at the center of the top of the disc, and a round rod is slidably mounted within the hole. A cone-shaped part located on the top of the disc is fitted onto the top of the round rod. The bottom of the round rod is fixedly connected to the lifting rod of the cylinder. The cylinder drives the round rod to move up and down. At least three [unclear symbols] are evenly arranged circumferentially on the top of the cylindrical sleeve. The T-slots contain sliding blocks, with both the centripetal and centrifugal ends of the T-slots being fully open. Each slider has a clamping block fixedly mounted on its top. A cover plate is fixedly mounted on the top of a cylindrical sleeve. The cover plate has axially evenly arranged clearance grooves corresponding to the sliders. The end face of the centripetal end of each slider is in contact with the surface of a cone. The cone has axially evenly arranged dovetail grooves corresponding to multiple sliders. Each slider has a dovetail strip corresponding to the dovetail groove at its centripetal end, and the dovetail strip is integrally formed with the slider.

[0007] By adopting the above technical solution, a cylinder drives a cylindrical rod, thereby causing the cone to move up and down. The top diameter of the cone is zero, and the large diameter end of the cone is located at the bottom. Because the slider is slidably installed in the T-slot, the T-slot can restrict the slider to slide only in the horizontal direction, either centripetally or centrifugally. Because the slider is provided with dovetail strips and the cone is provided with dovetail grooves, when the cone moves, it will drive the slider to move centripetally or centrifugally. Compared with the traditional three-jaw chuck structure, this structure can realize a four-jaw structure or more jaw structures, and can be pneumatically driven by a cylinder. By setting the dovetail strips that are adjacent to each other on the surface of the cone to be staggered vertically, the effect of accommodating more jaws in the same space can be achieved.

[0008] In a further embodiment, the top end of the cylindrical sleeve is axially and uniformly provided with centrifugal protrusions that correspond one-to-one with the sliders, and the centrifugal protrusions are integrally formed with the cylindrical sleeve.

[0009] By adopting the above technical solution, the slider can have a longer sliding distance.

[0010] In a further embodiment, a ring is fitted onto the outer top end of the cylindrical body, and multiple limiting rods are evenly arranged axially on the top of the ring.

[0011] By adopting the above technical solution, multiple limiting rods are used to cooperate with each other to restrict the entry position of objects with polygonal cross-sections.

[0012] In a further embodiment, a crossbar is provided at the top of the limiting rod, and the end face of the crossbar at the top of each limiting rod on the centripetal side is a hemispherical surface.

[0013] When adopting the above technical solution, it should be noted that the points closest to the axis of multiple hemispheres must be located on the same circle, and this circle is the inner circle of the outer wall of the polygonal workpiece whose cross-section needs to be clamped.

[0014] In a further embodiment, the top centrifugal side of the clamping block is provided with upward multi-level protrusions.

[0015] By adopting the above technical solution, these protrusions are used to expand the clamping size of the workpiece. If the workpiece size is small, the bottom end of the centripetal side of the clamping block can be used for clamping. If the workpiece size is large, the protrusions at the top of the clamping block are selected in sequence.

[0016] In a further embodiment, the bottom end of the cylindrical sleeve is provided with a clearance hole for avoiding the cylinder's air inlet and exhaust port.

[0017] In summary, this utility model has the following beneficial effects:

[0018] 1. A cylinder drives a cylindrical rod, which in turn moves a cone up and down. The cone's top diameter is zero, and its large-diameter end is located at the bottom. Because the slider is slidably mounted in a T-slot, the T-slot restricts the slider to move only in the horizontal direction, either centripetally or centrifugally. Since the slider has dovetail strips and the cone has dovetail grooves, when the cone moves, it drives the slider to move centripetally or centrifugally. Compared to the traditional three-jaw chuck structure, this structure can achieve a four-jaw structure or more, and can be pneumatically driven by a cylinder. By staggering the adjacent dovetail strips on the cone's surface, more jaws can be accommodated in the same space. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram illustrating the internal structure of the cylindrical sleeve used to demonstrate this utility model;

[0021] Figure 3 This is a structural diagram illustrating the mating relationship between the cone and the slider in this utility model.

[0022] In the diagram, 1. Cylindrical sleeve; 2. Cylinder; 3. Disc; 4. Cover plate; 5. Round rod; 6. Slider; 7. Clamping block; 8. Cone; 9. Ring; 10. Limiting rod; 11. Crossbar. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings.

[0024] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1 In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0025] Example 1:

[0026] like Figures 1-3As shown, a square tube clamping device includes a cylindrical sleeve 1, a cylinder 2, a disc 3, and a cover plate 4. The axes of the disc 3 and the cylindrical sleeve 1 are both vertically aligned. The cylinder 2 is located at the bottom of the cylindrical sleeve 1, and the disc 3 is located at the top of the cylindrical sleeve 1. A through-hole is located at the center of the top of the disc 3, and a round rod 5 is slidably installed within the hole. A cone 8 located at the top of the disc 3 is fitted onto the top of the round rod 5. The bottom of the round rod 5 is fixedly connected to the lifting rod of the cylinder 2. The cylinder 2 drives the round rod 5 to move up and down. At least three T-slots are evenly distributed around the top of the cylindrical sleeve 1, and a slider is slidably installed in each T-slot. 6. Both the centripetal and centrifugal ends of the T-slot are fully open. A clamping block 7 is fixedly installed on the top of each slider 6. The cover plate 4 is fixedly installed on the top of the cylindrical sleeve 1. The cover plate 4 is axially evenly provided with clearance grooves corresponding to the sliders 6. The end face of the centripetal end of each slider 6 is in contact with the surface of the cone 8. The cone 8 is axially evenly provided with dovetail grooves corresponding to multiple sliders 6. The centripetal end of each slider 6 is provided with a dovetail strip corresponding to the dovetail groove, and the dovetail strip is integrally formed with the slider 6. The top of the cylindrical sleeve 1 is axially evenly provided with centrifugal protrusions corresponding to the sliders 6, and the centrifugal protrusions are evenly arranged with the cylindrical sleeve. 1. A cylindrical sleeve 1 is integrally formed and has a ring 9 fitted at its outer top. Multiple limiting rods 10 are evenly arranged axially on the top of the ring 9. A crossbar 11 is provided at the top of each limiting rod 10. The centripetal end face of the crossbar 11 at the top of each limiting rod 10 is a hemispherical surface. It is important to note that the points closest to the axis of the multiple hemispheres must all be located on the same circle, which is the inscribed circle of the outer wall of the polygonal workpiece to be clamped. The top of the clamping block 7 has upward-facing multi-stage protrusions on its centrifugal side. The bottom of the cylindrical sleeve 1 has a clearance hole for avoiding the air inlet and outlet of the cylinder 2. The cylinder drives the cylindrical rod, thereby moving the cone up and down. The cone's top diameter is zero, and its large-diameter end is located at the bottom. Because the slider is slidably mounted in the T-slot, the T-slot restricts the slider to slide only in the horizontal direction, either centripetally or centrifugally. Since the slider has dovetail strips and the cone has dovetail grooves, when the cone moves, it drives the slider to move centripetally or centrifugally. Compared to the traditional three-jaw chuck structure, this structure can achieve a four-jaw structure or more, and can be pneumatically driven by a cylinder. By staggering the adjacent dovetail strips on the cone's surface vertically, more jaws can be accommodated in the same space.

[0027] Specific implementation process: In this embodiment, four sliders are set, mainly for clamping the square tube. Because it is batch processing, drilling is required on different surfaces of the square tube. Therefore, the cylindrical sleeve needs to be clamped on the three-jaw chuck of the horizontal drilling machine. One end of the crossbar is set as a hemispherical surface, and a nut is fixedly installed at the other end of the crossbar. The nut is welded to the crossbar. The top of the limiting rod is set as a threaded surface. Because it is batch processing, the size of the square tube is the same, so there is no need to consider the length of the crossbar. The crossbar is only to guide the square tube in a general area so that it can be clamped by the sliders and clamping blocks. The square tube needs to be placed manually or by a robotic arm. However, due to the structure of the limiting rod and the crossbar, the precision does not need to be very high.

[0028] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0029] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A square tube clamping device, characterized in that: The device includes a cylindrical sleeve (1), a cylinder (2), a disc (3), and a cover plate (4). The axes of the disc (3) and the cylindrical sleeve (1) are both vertically arranged. The cylinder (2) is located at the bottom of the cylindrical sleeve (1), and the disc (3) is located at the top of the cylindrical sleeve (1). A through-hole is provided at the center of the top of the disc (3). A round rod (5) is slidably installed in the through-hole. A cone (8) located at the top of the disc (3) is fitted at the top of the round rod (5). The bottom end of the round rod (5) is fixedly connected to the lifting rod of the cylinder (2). The cylinder (2) is used to drive the round rod (5) to move up and down. The top of the cylindrical sleeve (1) is evenly distributed around the circumference. The device has at least three T-slots, each of which has a slider (6) slidably installed in it. The centripetal and centrifugal ends of the T-slots are fully open. Each slider (6) has a clamping block (7) fixedly installed on its top. The cover plate (4) is fixedly installed on the top of the cylindrical sleeve (1). The cover plate (4) has axially uniformly arranged clearance grooves corresponding to the sliders (6). The end face of the centripetal end of each slider (6) is in contact with the surface of the cone (8). The cone (8) has axially uniformly arranged dovetail grooves corresponding to multiple sliders (6). Each slider (6) has a dovetail strip corresponding to the dovetail groove at its centripetal end, and the dovetail strip is integrally formed with the slider (6).

2. The square tube clamping device according to claim 1, characterized in that: The top end of the cylindrical sleeve (1) is axially uniformly provided with centrifugal protrusions that correspond one-to-one with the slider (6), and the centrifugal protrusions are integrally formed with the cylindrical sleeve (1).

3. The square tube clamping device according to claim 1, characterized in that: The outer top end of the cylindrical body is fitted with a ring (9), and multiple limiting rods (10) are evenly arranged axially on the top of the ring (9).

4. A square tube clamping device according to claim 3, characterized in that: The top of the limiting rod (10) is provided with a crossbar (11), and the end face of the crossbar (11) at the top of each limiting rod (10) is a hemispherical surface on the centripetal side.

5. A square tube clamping device according to claim 1, characterized in that: The top centrifugal side of the clamping block (7) is provided with upward multi-level protrusions.

6. A square tube clamping device according to claim 1, characterized in that: The bottom end of the cylindrical sleeve (1) is provided with a clearance hole for avoiding the air inlet and exhaust outlet of the cylinder (2).

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