Chuck limiting mechanism for metal round pipe machining

Abstract

The utility model discloses a chuck limiting mechanism for processing a metal circular tube, which relates to the technical field of chucks and comprises a chuck body, three clamping jaws distributed in an annular array are mounted on one side of the chuck body, mounting blocks are arranged on one sides of the three clamping jaws, and the mounting blocks are arranged on the other sides of the three clamping jaws. Worm rods are rotationally mounted on one sides of the middles of the three mounting blocks, worm wheels are rotationally mounted in the middles of the three mounting blocks, the worm wheels are meshed with the worm rods, rotating rods are fixedly mounted on one sides of the three worm wheels, and two connecting rods which are distributed diagonally are movably mounted at the two ends of each rotating rod; according to the clamping device, the fixing blocks of the clamping device can be conveniently mounted and dismounted, so that when different metal round pipes are clamped, the contact area with the outer surfaces of the metal round pipes can be larger by replacing the different fixing blocks, and therefore clamping is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of chucks, in particular to a chuck limiting mechanism for processing metal round tubes. Background Art

[0002] The chuck is a mechanical device specially designed to clamp and position metal tubes for various processing operations. The chuck limit mechanism is an important component of the chuck, which is used to limit the position of the metal tube during processing to prevent it from deflecting or moving.

[0003] When a metal round tube is processed by a chuck, the round tube is clamped and fixed by the clamping jaws of the chuck. However, when the chuck is used to clamp round tubes of different diameters, the clamping jaws are not convenient to disassemble and replace, so that the contact surface of the clamping jaws cannot completely fit with the outer surface of the round tube, resulting in poor clamping effect. Utility Model Content

[0004] In order to solve the problem that when the chuck clamps round tubes of different diameters, the contact surface of the jaws cannot completely fit with the outer surface of the round tube, resulting in poor clamping effect; the purpose of the utility model is to provide a chuck limiting mechanism for metal round tube processing.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a chuck limiting mechanism for metal round tube processing, comprising a chuck body, three clamping jaws distributed in a ring array are installed on one side of the chuck body, a mounting block is provided on one side of the three clamping jaws, a worm is rotatably installed on one side of the middle part of the three mounting blocks, a worm wheel is rotatably installed on the middle part of the three mounting blocks, and the worm wheel is meshed with the worm, a rotating rod is fixedly installed on one side of the three worm wheels, and two diagonally distributed connecting rods are movably installed at both ends of the three rotating rods, A limit frame is movably installed on one side of the connecting rod away from the rotating rod, and the limit frames are slidably clamped on both sides of the mounting block. A fixed block is fixedly installed on one side of the mounting block. A gear is rotatably installed in the middle of the three clamping jaws. A first tooth plate is slidably provided on one side of the three gears, and a second tooth plate is slidably provided on the other side of the three gears. The first tooth plate and the second tooth plate are meshed with the gear. A clamping block is slidably passed through one side of the three clamping jaws, and one end of the three clamping blocks is fixedly installed on one side of the first tooth plate.

[0006] Preferably, one end of the three first tooth plates is fixedly mounted with a spring, the other ends of the three springs are fixedly mounted on one side of the inner portion of the clamp, and the middle portion of one side of the three mounting blocks is fixedly mounted on one side of the second tooth plate.

[0007] Compared with the prior art, the beneficial effects of the present invention are:

[0008] 1. The present application can facilitate the installation and disassembly of its fixing block, so that when clamping different metal round tubes, different fixing blocks can be replaced to increase the contact area with the outer surface of the metal round tube, thereby making the clamping more stable.

[0009] 2. The present application can clamp the fixing block and the outer surface of the metal tube by contacting the clamping block with the outer surface of the metal tube to squeeze the first tooth plate, thereby making the metal tube clamped more firmly. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0011] Figure 1 This is a schematic structural diagram of the utility model.

[0012] Figure 2 It is a schematic diagram of the structure after being disassembled in the utility model.

[0013] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the utility model.

[0014] Figure 4 This is a schematic diagram of the connection structure between the rotating rod and the connecting rod in the utility model.

[0015] In the figure: 1. chuck body; 2. clamping jaw; 21. first tooth plate; 211. first slider; 212. first slide groove; 22. clamping block; 23. spring; 24. telescopic rod; 25. second tooth plate; 251. second slide groove; 26. gear; 3. mounting block; 31. handle; 32. worm; 33. worm gear; 34. rotating rod; 35. connecting rod; 36. limit frame; 361. limit groove; 4. fixing block; 41. positioning block; 411. positioning groove. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] Example: Figure 1-4 As shown, the utility model provides a chuck limiting mechanism for processing metal round tubes, including a chuck body 1, three clamping jaws 2 distributed in a ring array are installed on one side of the chuck body 1, and a mounting block 3 is provided on one side of each of the three clamping jaws 2. A worm 32 is rotatably installed on one side of the middle of each of the three mounting blocks 3, and a worm gear 33 is rotatably installed on the middle of each of the three mounting blocks 3, and the worm gear 33 is meshed with the worm 32. A rotating rod 34 is fixedly installed on one side of each of the three worm gears 33, and two diagonally distributed connecting rods 35 are movably installed at both ends of the three rotating rods 34. A limiting frame 36 is movably installed on the side of each of the multiple connecting rods 35 away from the rotating rod 34, and the multiple limiting frames 36 are slidable The moving card is provided on both sides of the mounting block 3, and a fixed block 4 is fixedly installed on one side of the mounting block 3. A gear 26 is rotatably installed in the middle of the three clamping jaws 2, and a first tooth plate 21 is slidably provided on one side of the three gears 26, and a second tooth plate 25 is slidably provided on the other side of the three gears 26. The first tooth plate 21 and the second tooth plate 25 are both engaged with the gear 26, and a clamping block 22 is slidably passed through one side of the three clamping jaws 2. One end of the three clamping blocks 22 is fixedly installed on one side of the first tooth plate 21. By arranging a worm gear 33 and a worm 32, its structure has a self-locking function, so that when the fixed block 4 is fixed by the limit frame 36, it is more stable and will not be reset.

[0018] One end of the three first tooth plates 21 is fixedly installed with a spring 23, and the other ends of the three springs 23 are fixedly installed on the inner side of the clamping jaw 2. The middle part of one side of the three mounting blocks 3 is fixedly installed on one side of the second tooth plate 25. By setting the spring 23, when the clamping jaw 2 is away from the metal round tube, the reaction force of the spring 23 will push the first tooth plate 21 to move outward, that is, drive the fixing block 4 away from the metal round tube for the next use.

[0019] A first slider 211 is fixedly installed on one side of the three first tooth plates 21, and a first slide groove 212 is opened on one side of the inner part of the three clamping jaws 2. The three first sliders 211 are slidably clamped inside the first slide groove 212. By setting the first slider 211 and the first slide groove 212, when the first tooth plate 21 slides, the first slide groove 212 is limited by the first slider 211, so that the first tooth plate 21 is more stable when sliding.

[0020] A telescopic rod 24 is fixedly installed on one side of the three clamping jaws 2, and one end of the three telescopic rods 24 is fixedly installed on the middle part of one side of the first tooth plate 21. By setting the telescopic rod 24, the spring 23 can be protected to a certain extent to avoid excessive squeezing.

[0021] A second sliding groove 251 is provided in the middle of one side of each of the three clamping jaws 2, and one side of each of the three second tooth plates 25 is slidably clamped inside the second sliding groove 251. By providing the second sliding groove 251, the second tooth plate 25 can slide more stably under the drive of the gear 26.

[0022] A handle 31 is fixedly mounted on one end of each of the three worm gears 32 that passes through the mounting block 3 . By setting the handle 31 , the worm gears 32 can be driven to rotate by rotating the handle 31 .

[0023] Two symmetrically distributed limiting grooves 361 are provided on one side of the three fixed blocks 4, and multiple limiting frames 36 are slidably clamped inside the limiting grooves 361. By setting the limiting grooves 361, after one side of the limiting frame 36 is clamped inside the limiting groove 361, the fixed blocks 4 can be limited and fixed.

[0024] Four evenly distributed positioning blocks 41 are fixedly installed on one side of the three fixing blocks 4, and four evenly distributed positioning grooves 411 are opened on one side of the three installation blocks 3. Multiple positioning blocks 41 are slidably clamped inside the positioning grooves 411. By setting the positioning grooves 411 and the positioning blocks 41, when the fixing blocks 4 are installed, the positioning blocks 41 are first clamped inside the positioning grooves 411, and then the handle 31 is rotated, so that the limit frame 36 can be accurately clamped inside the limit groove 361.

[0025] Working principle: In actual use, the chuck body 1 drives the clamping jaws 2 to clamp the metal tube. First, the clamping block 22 will contact the outer surface of the metal tube. When the clamping jaws 2 continue to move, the first tooth plate 21 will be driven to move, thereby driving the gear 26 to rotate, that is, driving the second tooth plate 25 on the other side to move, thereby driving the mounting block 3 and the fixing block 4 to move toward the outer surface of the metal tube. The ends of the clamping jaws 2 and the ends of the fixing block 4 are in contact with the outer surface of the metal tube at the same time, thereby clamping and fixing the metal tube.

[0026] When clamping metal round tubes of different diameters, the worm 32 can be driven to rotate by rotating the handle 31, that is, the worm wheel 33 can be driven to rotate, thereby causing the rotating rod 34 to rotate, that is, in cooperation with the connecting rod 35, the limit frame 36 is moved away from the limit groove 361, and the fixed block 4 installed on one side of the mounting block 3 can be removed, and the fixed block 4 with the same arc diameter as the metal round tube to be clamped on one side can be replaced. By rotating the handle 31 in the opposite direction, the two limit frames 36 can be moved relative to each other, so that they are stuck inside the limit groove 361, and the fixed block 4 is installed and fixed.

[0027] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A chuck limiting mechanism for metal round tube processing, comprising a chuck body (1), characterized in that: One side of the chuck body (1) is provided with three clamping jaws (2) distributed in an annular array, one side of each of the three clamping jaws (2) is provided with a mounting block (3), one side of each of the three mounting blocks (3) is rotatably mounted with a worm (32), the middle part of each of the three mounting blocks (3) is rotatably mounted with a worm wheel (33), and the worm wheel (33) is meshed with the worm (32), one side of each of the three worm wheels (33) is fixedly mounted with a rotating rod (34), both ends of each of the three rotating rods (34) are movably mounted with two diagonally distributed connecting rods (35), and a limiting frame (36) is movably mounted on the side away from the rotating rod (34) of each of the multiple connecting rods (35). , multiple limit frames (36) are slidably clamped on both sides of the mounting block (3), a fixed block (4) is fixedly installed on one side of the mounting block (3), and a gear (26) is rotatably installed in the middle of the three clamping jaws (2), one side of the three gears (26) is slidably provided with a first tooth plate (21), and the other side of the three gears (26) is slidably provided with a second tooth plate (25), the first tooth plate (21) and the second tooth plate (25) are both engaged with the gear (26), and one side of the three clamping jaws (2) is slidably penetrated by a clamping block (22), and one end of the three clamping blocks (22) is fixedly installed on one side of the first tooth plate (21).

2. A chuck limiting mechanism for metal round tube processing according to claim 1, characterized in that: One end of each of the three first tooth plates (21) is fixedly mounted with a spring (23), the other ends of each of the three springs (23) are fixedly mounted on one side of the interior of the clamping jaw (2), and the middle portion of one side of each of the three mounting blocks (3) is fixedly mounted on one side of the second tooth plate (25).

3. A chuck limiting mechanism for metal round tube processing according to claim 1, characterized in that: A first slide block (211) is fixedly mounted on one side of each of the three first tooth plates (21), a first slide groove (212) is provided on one side of the interior of each of the three clamping jaws (2), and the three first slide blocks (211) are slidably clamped inside the first slide groove (212).

4. A chuck limiting mechanism for metal round tube processing according to claim 1, characterized in that: A telescopic rod (24) is fixedly mounted on one side of each of the three clamping jaws (2), and one end of each of the three telescopic rods (24) is fixedly mounted on the middle portion of one side of the first tooth plate (21).

5. A chuck limiting mechanism for metal round tube processing according to claim 1, characterized in that: A second sliding groove (251) is provided in the middle of one side of each of the three clamping jaws (2), and one side of each of the three second tooth plates (25) is slidably clamped inside the second sliding groove (251).

6. A chuck limiting mechanism for metal round tube processing according to claim 1, characterized in that: One end of the three worms (32) passing through the mounting block (3) is fixedly mounted with a handle (31).

7. A chuck limiting mechanism for metal round tube processing according to claim 1, characterized in that: Two symmetrically distributed limiting grooves (361) are provided on one side of each of the three fixing blocks (4), and the plurality of limiting frames (36) are slidably mounted inside the limiting grooves (361).

8. A chuck limiting mechanism for metal round tube processing according to claim 1, characterized in that: Four evenly distributed positioning blocks (41) are fixedly mounted on one side of each of the three fixing blocks (4); four evenly distributed positioning grooves (411) are opened on one side of each of the three mounting blocks (3); and the plurality of positioning blocks (41) are slidably mounted inside the positioning grooves (411).

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