Clamping device for machining round pipe

Abstract

The utility model discloses a clamping device for processing a round pipe, and particularly relates to the technical field of round pipe processing, the clamping device comprises a chuck, one side of the chuck is provided with three outer claws, the three outer claws are distributed on the chuck in an isosceles triangle shape, the outer walls of the three outer claws are all fixedly provided with inner expansion soft claws, and the inner expansion soft claws are provided with inner expansion soft claws. A positioning expander is arranged at one end of the internal expanding soft claw, a tailstock is arranged at the end, away from the chuck, of the positioning expander, a guide shaft is arranged on the side, close to the chuck, of the tailstock, a small guide shaft is arranged at the end, close to the chuck, of the guide shaft, and a wrench is fixedly installed on the front side of the bottom of the tailstock. The positioning expander comprises an inner limiting ring, and four expanders are arranged on the outer side of the inner limiting ring. By arranging the positioning expander and other structures, all machining of machining elements can be completed on the same numerical control lathe, it is ensured that the end faces of the machining elements are parallel, it is ensured that the machining elements on the two sides are concentric, the time for workers to produce the machining elements is saved, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of round tube processing technology, and more specifically, to a clamping device for processing round tubes. Background Technology

[0002] In the existing technology, the machining of round tubes on a lathe requires two clamping operations. Each time, one end is clamped and the other end is machined. The tailstock is also used to position the other end of the round tube. This is especially true when CNC machining is required, as it occupies a lot of equipment and is inefficient.

[0003] Therefore, there is an urgent need for a clamping device for processing round tubes to solve the above problems. Utility Model Content

[0004] To overcome the aforementioned deficiencies of the prior art, embodiments of this utility model provide a clamping device for machining round tubes. By incorporating structures such as a positioning expansion device, the left side of this utility model serves as a clamping device. A flexible connection device is added to the chuck of the CNC lathe to secure the machining element. The left chuck provides space for CNC lathe machining, facilitating the processing of outer cylindrical surfaces, end faces, threads, etc. The right positioning expansion device can be tightened using an Allen wrench. The right positioning expansion device is equipped with a bearing, allowing the tailstock of the lathe to effectively ensure the fixation and concentricity of the machining element. This utility model allows all machining of the machining element to be completed on the same CNC lathe, ensuring parallel end faces and concentricity of the machining elements on both sides. This saves workers' production time and improves product quality, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clamping device for processing round tubes, including a chuck, three external jaws are provided on one side of the chuck, the three external jaws are distributed in an isosceles triangle on the chuck, an inner expansion soft jaw is fixedly installed on the outer wall of each of the three external jaws, a positioning expansion wrench is provided at one end of the inner expansion soft jaw, a tailstock is provided at the end of the positioning expansion wrench away from the chuck, a guide shaft is provided on the side of the tailstock close to the chuck, a guide small shaft is provided at the end of the guide shaft close to the chuck, and a wrench is fixedly installed on the front side of the bottom of the tailstock;

[0006] The positioning expansion tire includes an inner limiting ring, and four expansion tires are arranged on the outer side of the inner limiting ring. Each of the four expansion tires has a limiting groove inside, and the limiting groove matches the width of the inner limiting ring. A strip groove is provided on the inner wall of the expansion tire. A fixing ring is arranged between the four expansion tires. Insertion holes are provided around the four fixing rings, and insertion rods are provided inside the four insertion holes. An opposing cone is provided on one side of the fixing ring. An internal hexagonal hole is provided inside the opposing cone at the end away from the fixing ring, and a bearing is fixedly installed inside the opposing cone at the end away from the fixing ring.

[0007] In a preferred embodiment, the strip groove and the limiting groove are arranged perpendicular to each other.

[0008] In a preferred embodiment, the four insert rods correspond one-to-one with the four strip slots, and the ends of the four insert rods are respectively disposed inside the strip slots at the corresponding positions.

[0009] In a preferred embodiment, the end of the opposing cone is disposed inside the fixing ring, and the opposing cone is threadedly connected to the fixing ring.

[0010] In a preferred embodiment, the end of the guide shaft is adapted to a bearing.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] This utility model incorporates a positioning expansion device and other structures. The left side features a clamping device, which adds a flexible connection to the chuck of the CNC lathe to secure the machining element. The left chuck provides space for CNC lathe machining, facilitating the processing of outer cylindrical surfaces, end faces, threads, etc. The right-side positioning expansion device can be tightened using an Allen wrench and is equipped with a bearing, ensuring effective fixation and concentricity of the machining element by the lathe's tailstock. This utility model allows all machining of the same element to be completed on the same CNC lathe, ensuring parallel end faces and concentricity of the machining elements on both sides, saving workers' production time and improving product quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a side view of the chuck structure of this utility model.

[0015] Figure 3 This is a frontal exploded view of the positioning expansion tire structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the explosion structure for the positioning and expansion test of this utility model.

[0017] The attached diagram is labeled as follows: 1. Chuck; 2. Outer jaw; 3. Inner expansion jaw; 4. Positioning expansion wheel; 5. Tailstock; 6. Guide shaft; 7. Guide shaft; 8. Wrench; 9. Inner limit ring; 10. Expansion wheel; 11. Strip groove; 12. Fixing ring; 13. Insertion hole; 14. Insertion rod; 15. Opposing cone; 16. Limiting groove; 17. Internal hexagonal hole. Detailed Implementation

[0018] 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.

[0019] As attached Figure 1-4 As shown, this utility model provides a clamping device for processing round tubes, including a chuck 1. Three external jaws 2 are provided on one side of the chuck 1. The three external jaws 2 are arranged in an isosceles triangle on the chuck 1. An inner expansion soft jaw 3 is fixedly installed on the outer wall of each of the three external jaws 2. A positioning expansion 4 is provided at one end of the inner expansion soft jaw 3. A tailstock 5 is provided at the end of the positioning expansion 4 away from the chuck 1. A guide shaft 6 is provided on the side of the tailstock 5 close to the chuck 1. A guide small shaft 7 is provided at the end of the guide shaft 6 close to the chuck 1. A wrench 8 is fixedly installed on the front side of the bottom of the tailstock 5.

[0020] The positioning expansion tire 4 includes an inner limiting ring 9, and four expansion tires 10 are arranged on the outer side of the inner limiting ring 9. Each of the four expansion tires 10 has a limiting groove 16 inside, and the limiting groove 16 matches the width of the inner limiting ring 9. The inner wall of the expansion tire 10 has a strip groove 11. A fixing ring 12 is arranged between the four expansion tires 10. Insertion holes 13 are arranged through all four sides of the fixing ring 12. Insertion rods 14 are arranged inside each of the four insertion holes 13. An opposing cone 15 is arranged on one side of the fixing ring 12. An internal hexagonal hole 17 is arranged inside the end of the opposing cone 15 away from the fixing ring 12. A bearing is fixedly installed inside the end of the opposing cone 15 away from the fixing ring 12.

[0021] The strip groove 11 and the limiting groove 16 are arranged perpendicularly to each other.

[0022] The four insertion rods 14 correspond one-to-one with the four strip grooves 11, and the ends of the four insertion rods 14 are respectively disposed inside the strip grooves 11 at the corresponding positions.

[0023] The end of the opposing cone 15 is disposed inside the fixing ring 12, and the opposing cone 15 is threadedly connected to the fixing ring 12.

[0024] The end of the guide shaft 7 is adapted to the bearing.

[0025] The specific implementation method is as follows: When using this utility model, the tool is inserted into the chuck 1 and rotated to control the outer jaw 2 to move outward, thereby causing the three inner expansion soft jaws 3 to expand outward and tighten, fixing one end of the pipe. The inner expansion soft jaws have a groove at the end of the pipe to avoid interference from the cutting tool when machining the end face. Then, an Allen wrench is inserted into the Allen hole 17 and rotated, causing the opposing cones 15 to move inward. Since the opposing cones 15 are conical, they will squeeze the four expansion tires 10 outward during the movement, thereby fixing the other end of the pipe. Then, the guide shaft 7 on the tailstock 5 can be inserted into the bearing to complete the fixing and connection of the two ends of the pipe, and then processing can be performed. The left side of this utility model To tighten the device, a flexible connection device is added to the chuck 1 of the CNC lathe to achieve the function of securing the machining element. The left chuck 1 has space for CNC lathe machining, which is convenient for machining the outer cylindrical surface, end face, thread, etc. The right positioning expansion wrench 4 can be tightened with an Allen wrench. The right positioning expansion wrench 4 is equipped with a bearing, which facilitates the tailstock 5 of the lathe to effectively ensure the fixation and concentricity of the machining element. The machining element of this utility model can be fully machined on the same CNC lathe, ensuring that the end face of the machining element is parallel and that the machining elements on both sides are concentric, saving workers' production time and improving product quality.

[0026] Working principle of this utility model:

[0027] Refer to the instruction manual appendix Figure 1-4 When using this utility model, by providing structures such as the positioning expansion tire 4, the left side of this utility model is a clamping device. By adding a soft connection device to the chuck 1 of the CNC lathe on the original basis, the processing element can be fastened. The left chuck 1 leaves space for the CNC lathe to process, which is convenient for processing the outer cylindrical surface, end face, thread, etc. The right positioning expansion tire 4 can be tightened with an Allen wrench. The right positioning expansion tire 4 is equipped with a bearing, which makes it convenient for the tailstock 5 of the lathe to effectively ensure the fixation and concentricity of the processing element. The processing element of this utility model can be fully processed on the same CNC lathe, ensuring that the end face of the processing element is parallel and that the processing elements on both sides are concentric, saving workers' production time and improving product quality.

[0028] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0029] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0030] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 clamping device for machining a round tube, comprising a chuck (1), characterized in that: The chuck (1) is provided with three outer claws (2) on one side, the three outer claws (2) are arranged in an isosceles triangle on the chuck (1), the inner expanding soft claws (3) are fixedly installed on the outer walls of the three outer claws (2), the inner expanding soft claws (3) are provided with positioning expanding tires (4) at one end, the positioning expanding tires (4) are provided with tail seats (5) away from the chuck (1), the tail seats (5) are provided with guide shafts (6) on the sides close to the chuck (1), the guide shafts (6) are provided with guide small shafts (7) on the ends close to the chuck (1), the tail seats (5) are fixedly installed with spanners (8) on the bottom front sides; The positioning expanding tire (4) comprises an inner limiting ring (9), four expanding tires (10) are arranged on the outer side of the inner limiting ring (9), limiting grooves (16) are arranged in the four expanding tires (10), the limiting grooves (16) are matched with the width of the inner limiting ring (9), strip-shaped grooves (11) are arranged on the inner walls of the expanding tires (10), a fixing ring (12) is arranged between the four expanding tires (10), plug holes (13) are arranged around the fixing ring (12), plug rods (14) are arranged in the four plug holes (13), opposite tapered bodies (15) are arranged on one side of the fixing ring (12), inner hexagonal holes (17) are arranged in the inner ends of the opposite tapered bodies (15) away from the fixing ring (12), bearings are fixedly installed on the inner ends of the opposite tapered bodies (15) away from the fixing ring (12).

2. A clamping device for machining a circular tube according to claim 1, characterized in that: The strip-shaped grooves (11) and the limiting grooves (16) are arranged perpendicular to each other.

3. A clamping device for machining a circular tube according to claim 1, characterized in that: The four plug rods (14) correspond to the four strip-shaped grooves (11) one by one, and the ends of the four plug rods (14) are arranged in the corresponding strip-shaped grooves (11).

4. A pipe handling clamp apparatus as claimed in claim 1, wherein: The opposite tapered bodies (15) are arranged in the fixing ring (12), and the opposite tapered bodies (15) are threadedly connected with the fixing ring (12).

5. A pipe handling clamp apparatus as claimed in claim 1, wherein: The end of the guide small shaft (7) is matched with the bearing.

Images