Special spinning chuck

Abstract

The invention belongs to the technical field of spinning machine chucks, and particularly relates to a special spinning chuck which comprises a chuck body, a connecting disc comprises a connecting disc body, a disc body is arranged on one side of the connecting disc body, a rear blocking cover is fixedly connected between the connecting disc body and the disc body, and a plurality of wedge blocks distributed in a circumferential array mode are fixedly installed on the inner side of the disc body. And sliding seats are slidably mounted on the multiple wedge blocks, clamping jaws are fixedly mounted on the sides, away from the connecting disc, of the sliding seats, and the same pull sleeve is slidably mounted on the sides, close to the connecting disc, of the multiple sliding seats. By arranging the reset mechanism, it can be guaranteed that when each set of wedge blocks and sliding bases are abraded to different degrees, the multiple clamping jaws can still keep moving synchronously, and in addition, when flame heating spinning is conducted on the end opening of a pipe workpiece, the air cooling mechanism is matched, and the air cooling efficiency is improved. Heat radiated to the chuck body by flames and heat conducted to the chuck body by pipe workpieces can be reduced, and the influence of high temperature on the chuck body is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of chuck of a spinning machine, and particularly to a special spinning chuck. Background Art

[0002] During the pressing and forming process of a spinning machine, a clamping chuck is required to fix the pipe workpiece to be clamped, so that the pipe workpiece rotates with the main shaft and makes a feeding movement along the axial direction. When some existing pipe workpieces are spun and closed, the ports of the pipe workpieces need to be heated by flame to make them easy to shape. However, the heat during heating is easily transferred to the clamping chuck, which not only affects the running accuracy of the subsequent clamping chuck, but also easily affects the quality of the internal grease. In addition, moving parts such as slider guides in the clamping chuck are prone to uneven wear after long-term use, resulting in inconsistent clamping forces of each jaw on the pipe workpiece. To prevent the above problems, a special spinning chuck is proposed. Summary of the Invention

[0003] In order to solve the shortcomings existing in the prior art, the present invention proposes a special spinning chuck.

[0004] To achieve the above object, the present invention adopts the following technical solution: a special spinning chuck, including a chuck body, the connecting disk includes a connecting disk, one side of the connecting disk is provided with a disk body, a rear cover is fixedly connected between the connecting disk and the disk body, a plurality of wedge blocks are fixedly installed inside the disk body in a circumferential array, a sliding seat is slidably installed on each of the plurality of wedge blocks, a jaw is fixedly installed on the side of the sliding seat away from the connecting disk, a same pull sleeve is slidably installed on the sides of the plurality of sliding seats close to the connecting disk, a front cover is fixedly installed on the side of the pull sleeve away from the connecting disk, each of the plurality of sliding seats is located between the front cover and the pull sleeve, a same reset mechanism is installed on the plurality of jaws, the reset mechanism is used to synchronously move the plurality of jaws, and an air-cooling mechanism is provided on the side of the reset mechanism away from the chuck body.

[0005] Preferably, a plurality of installation grooves are formed inside the disk body in a circumferential array, and the plurality of wedge blocks are respectively fixedly installed in the corresponding installation grooves. A plurality of first chutes and second chutes are formed on the side surface of the pull sleeve in a circumferential array, and the corresponding first chutes and second chutes are communicated with each other. The plurality of wedge blocks are respectively arranged in the corresponding first chutes, and the plurality of wedge blocks are respectively slidably installed in the corresponding second chutes. Oblique grooves are formed on both sides of the wedge block, and the sliding seat slides along the two oblique grooves.

[0006] Preferably, a push-pull ring is fixedly installed on the side of the first chute close to the connecting disk, a connecting sleeve is fixedly installed inside the push-pull ring, a dust cover is sleeved on the outside of the front cover, and the dust cover is fixedly connected with the disk body and the pull sleeve.

[0007] Preferably, a first heat insulation plate is provided between the front cover and the pulling sleeve, and a second heat insulation plate is provided between the dust cover and the disc body.

[0008] Preferably, the reset mechanism includes an annular disc and guide rods fixedly connected to a plurality of clamping jaws. The plurality of guide rods are radially distributed in a conical shape. A plurality of linear bearings arranged in a circumferential array are fixedly installed through the annular disc, and the plurality of linear bearings are respectively slidably sleeved on the corresponding guide rods. A plurality of spring telescopic rods arranged in a circumferential array are fixedly installed between the annular disc and the front cover.

[0009] Preferably, the air cooling mechanism includes a first annular plate and a second annular plate. A plurality of blades arranged in a circumferential array are fixedly installed between the first annular plate and the second annular plate. The first guide cone is fixedly connected to a part of the annular disc away from the chuck body.

[0010] Preferably, a second guide cone is provided inside the second annular plate, and a first guide cone is provided inside the first annular plate. One side of the first guide cone and the second guide cone close to each other is fixedly connected. One side of the plurality of blades close to the axis of the first guide cone and the second guide cone is fixedly connected to the first guide cone and the second guide cone.

[0011] Preferably, a first guide surface is provided inside the first annular plate. A first conical air duct is formed between the first guide surface and the first guide cone. A second guide surface is provided inside the blade. A second conical air duct is formed between the second guide surface and the second guide cone.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting the reset mechanism, the present invention can ensure that when each group of wedges and sliders are worn to different degrees, the plurality of clamping jaws can still move synchronously. In addition, when flame heating and spinning the port of the pipe workpiece, by cooperating with the air cooling mechanism, the heat radiated by the flame to the chuck body can be reduced, and the heat conducted from the pipe workpiece to the chuck body can be reduced, thereby reducing the influence of high temperature on the chuck body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the overall structure of a special spinning chuck proposed by the present invention; Figure 2 is a side sectional view of the chuck body in a special spinning chuck proposed by the present invention; Figure 3 is Figure 2 an enlarged schematic view of part A in Figure 4 is a partial exploded view of the chuck body in a special spinning chuck proposed by the present invention; Figure 5An overall exploded view of the chuck body in a special spinning chuck proposed by the present invention; Figure 6 A schematic structural view of a reset mechanism and an air-cooling mechanism in a special spinning chuck proposed by the present invention; Figure 7 A side sectional view of the air-cooling mechanism in a special spinning chuck proposed by the present invention; Figure 8 For Figure 7 An enlarged schematic structural view of part B in

[0014] In the figure: 1. Chuck body; 11. Connecting plate; 12. Rear retaining cover; 13. Disk body; 131. Installation groove; 14. Wedge block; 141. Inclined groove; 15. Pulling sleeve; 151. First sliding groove; 152. Second sliding groove; 16. Slide seat; 17. Chuck jaw; 18. Connecting sleeve; 19. Push-pull ring; 110. Dust cover; 111. Front retaining cover; 112. First heat insulation plate; 113. Second heat insulation plate; 2. Reset mechanism; 21. Guide rod; 22. Annular plate; 23. Linear bearing; 24. Spring telescopic rod; 3. Air-cooling mechanism; 31. First annular plate; 311. First guiding surface; 32. Blade; 33. Second annular plate; 331. Second guiding surface; 34. First guiding conical cylinder; 35. Second guiding conical cylinder; 36. First conical air duct; 37. Second conical air duct. Detailed implementation manners

[0015] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0016] Please refer to Figures 1 - 8 , the present invention provides a technical solution: a special spinning chuck, including a chuck body 1, the connecting plate 11 includes the connecting plate 11, one side of the connecting plate 11 is provided with a disk body 13, a rear retaining cover 12 is fixedly connected between the connecting plate 11 and the disk body 13, a plurality of wedge blocks 14 arranged in a circumferential array are fixedly installed inside the disk body 13, a slide seat 16 is slidably installed on each of the plurality of wedge blocks 14, a chuck jaw 17 is fixedly installed on the side of the slide seat 16 away from the connecting plate 11, the chuck jaw 17 is in an L shape, a same pulling sleeve 15 is slidably installed on the sides of the plurality of slide seats 16 close to the connecting plate 11, a front retaining cover 111 is fixedly installed on the side of the pulling sleeve 15 away from the connecting plate 11, each of the plurality of slide seats 16 is located between the front retaining cover 111 and the pulling sleeve 15, a same reset mechanism 2 is installed on the plurality of chuck jaws 17, the reset mechanism 2 is used to synchronously move the plurality of chuck jaws 17, and an air-cooling mechanism 3 is provided on the side of the reset mechanism 2 away from the chuck body 1.

[0017] A plurality of mounting grooves 131 distributed in a circumferential array are formed inside the disk body 13. A plurality of wedge blocks 14 are respectively and fixedly installed in the corresponding mounting grooves 131. A plurality of first sliding grooves 151 and second sliding grooves 152 distributed in a circumferential array are formed on the side surface of the pulling sleeve 15. The corresponding first sliding grooves 151 and second sliding grooves 152 communicate with each other. A plurality of wedge blocks 14 are respectively arranged in the corresponding first sliding grooves 151. A plurality of wedge blocks 14 are respectively slidably installed in the corresponding second sliding grooves 152. Oblique grooves 141 are formed on both sides of the wedge block 14. The sliding seat 16 slides along the two oblique grooves 141.

[0018] A pushing and pulling ring 19 is fixedly installed on one side of the first sliding groove 151 close to the connecting disk 11. A connecting sleeve 18 is fixedly installed inside the pushing and pulling ring 19. A dust cover 110 is sleeved outside the front retaining cover 111. The dust cover 110 is fixedly connected with the disk body 13 and the pulling sleeve 15.

[0019] A first heat insulation plate 112 is arranged between the front retaining cover 111 and the pulling sleeve 15. A second heat insulation plate 113 is arranged between the dust cover 110 and the disk body 13.

[0020] Furthermore, by arranging the first heat insulation plate 112 and the second heat insulation plate 113, the effect of blocking temperature transmission can be achieved. When the port of the pipe workpiece needs to be spun during the flame heating process, the first heat insulation plate 112 and the second heat insulation plate 113 can reduce the heat of the flame radiation on the plurality of wedge blocks 14 and the sliding seat 16, so that they are not affected by high temperature. For example, grease needs to be used for lubrication between the wedge block 14 and the sliding seat 16, and the grease can be prevented from being affected by high temperature.

[0021] The reset mechanism 2 includes an annular disk 22 and guide rods 21 fixedly connected with a plurality of chucks 17. The plurality of guide rods 21 are in a conical radial shape. A plurality of linear bearings 23 distributed in a circumferential array are fixedly installed through the annular disk 22. The plurality of linear bearings 23 are respectively slidably sleeved on the corresponding guide rods 21. A plurality of spring telescopic rods 24 distributed in a circumferential array are fixedly installed between the annular disk 22 and the front retaining cover 111.

[0022] Furthermore, when the plurality of chucks 17 approach or move away from each other, the distance between the annular disk 22 and the chuck body 1 will change. After long-term use, when there is wear between a certain group of wedge blocks 14 and the sliding seat 16, if only the push-pull adjustment of the push-pull ring 19 is adopted, the moving distance of the chuck 17 in this group will be different from that of the chucks 17 in other groups. At this time, with the cooperation of the annular disk 22, the plurality of groups of guide rods 21 and linear bearings 23, it can be ensured that the moving distances of the respective chucks 17 always remain the same.

[0023] The air-cooling mechanism 3 includes the first annular plate 31 and the second annular plate 33. A plurality of blades 32 distributed in a circumferential array are fixedly installed between the first annular plate 31 and the second annular plate 33. The first guide cone 34 is fixedly connected to some parts of the annular disc 22 away from the chuck body 1.

[0024] The second guide cone 35 is arranged inside the second annular plate 33, and the first guide cone 34 is arranged inside the first annular plate 31. One side of the first guide cone 34 and the second guide cone 35 close to each other is fixedly connected. One side of the plurality of blades 32 close to the axis of the first guide cone 34 and the second guide cone 35 is fixedly connected to the first guide cone 34 and the second guide cone 35.

[0025] A first guide surface 311 is arranged inside the first annular plate 31. A first conical air duct 36 is formed between the first guide surface 311 and the first guide cone 34. A second guide surface 331 is arranged inside the blade 32. A second conical air duct 37 is formed between the second guide surface 331 and the second guide cone 35.

[0026] Further, as Figure 7 and Figure 8 shown, when the air-cooling mechanism 3 rotates clockwise, the first annular plate 31, the second annular plate 33 and the plurality of blades 32 cooperate to draw external air towards the axes of the first annular plate 31 and the second annular plate 33. When the air flow impacts on the first guide cone 34 and the second guide cone 35, it will be guided to the first conical air duct 36 and the second conical air duct 37 and discharged. The air flow discharged from the second conical air duct 37 will blow towards the port of the pipe workpiece to be spin-forged, and the air flow discharged from the first conical air duct 36 will be discharged from the annular disc 22 and blow towards the axis of the chuck body 1.

[0027] In this embodiment: During use, the connecting disc 11 is fixedly connected to the turntable of the spinning machine, and the push-pull ring 19 is connected to the turntable of the spinning machine through a plurality of hydraulic rods distributed in a circumferential array. During operation, the pipe workpiece passes through between the chuck body 1, the reset mechanism 2 and the air-cooling mechanism 3. Then, control the plurality of hydraulic rods to pull the push-pull ring 19 towards the turntable. The push-pull ring 19 will cause the plurality of sliding seats 16 to slide on the plurality of wedges 14 by pulling the pulling sleeve 15. Since the wedges 14 are inclined, during this process, the plurality of sliding seats 16 will approach each other, and the plurality of sliding seats 16 will drive the plurality of jaws 17 to approach each other and clamp and fix the pipe workpiece; During the process of the plurality of jaws 17 approaching each other, through the cooperation of multiple groups of guide rods 21 and linear bearings 23, the annular disc 22 will be pushed away from the chuck body 1. At this time, the plurality of spring telescopic rods 24 will be stretched and extended; Subsequently, when spinning the port of the pipe workpiece, the turntable drives the chuck body 1 and the pipe workpiece fixed thereon to rotate through a pneumatic spinning machine. When the air-cooling mechanism 3 rotates synchronously with the chuck body 1 and the reset mechanism 2, the external air will be sucked by the air-cooling mechanism 3 and blown along the axis to both sides. When spinning a pipe workpiece that requires flame heating at the port, the heat radiated by the flame to the chuck body 1 can be reduced through the airflow blown from the chuck body 1 to the port. When the pipe workpiece is heated by the flame, the heat directly conducted from the heated pipe workpiece to the multiple jaws 17 will cause the entire chuck body 1 to be heated. At this time, the airflow blown from the air-cooling mechanism 3 to the chuck body 1 will flow through the center of the chuck body 1, thereby carrying away a part of the heat conducted from the pipe workpiece to the chuck body 1; When the spinning of the pipe workpiece port is completed, control multiple hydraulic rods to pull the push-pull ring 19 away from the turntable. At this time, multiple sliding seats 16 will move away from each other, and multiple sliding seats 16 will drive multiple jaws 17 to move away from each other and release the pipe workpiece. When multiple jaws 17 approach each other, they will, through the cooperation of multiple groups of guide rods 21 and linear bearings 23, pull the annular disc 22 away from the chuck body 1. At this time, the stretched and extended multiple spring telescopic rods 24 will reset.

[0028] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A special spinning chuck, comprising a chuck body (1), characterized in that: The connecting disc (11) includes a connecting disc (11). One side of the connecting disc (11) is provided with a disc body (13). A rear retaining cover (12) is fixedly connected between the connecting disc (11) and the disc body (13). A plurality of wedge blocks (14) are fixedly installed inside the disc body (13) in a circumferential array. A sliding seat (16) is slidably installed on each of the plurality of wedge blocks (14). A claw (17) is fixedly installed on the side of the sliding seat (16) away from the connecting disc (11). A same pulling sleeve (15) is slidably installed on the sides of the plurality of sliding seats (16) close to the connecting disc (11). A front retaining cover (111) is fixedly installed on the side of the pulling sleeve (15) away from the connecting disc (11). The plurality of sliding seats (16) are all located between the front retaining cover (111) and the pulling sleeve (15). A same reset mechanism (2) is installed on the plurality of claws (17). The reset mechanism (2) is used to synchronously move the plurality of claws (17). An air cooling mechanism (3) is provided on the side of the reset mechanism (2) away from the chuck body (1).

2. A special spinning chuck according to claim 1, wherein: A plurality of mounting grooves (131) are formed inside the disc body (13) in a circumferential array. The plurality of wedge blocks (14) are respectively fixedly installed in the corresponding mounting grooves (131). A plurality of first chutes (151) and second chutes (152) are formed on the side surface of the pulling sleeve (15) in a circumferential array. The corresponding first chutes (151) and second chutes (152) communicate with each other. The plurality of wedge blocks (14) are respectively arranged in the corresponding first chutes (151). The plurality of wedge blocks (14) are respectively slidably installed in the corresponding second chutes (152). Oblique grooves (141) are formed on both sides of the wedge block (14). The sliding seat (16) slides along the two oblique grooves (141).

3. A special spinning chuck according to claim 1, characterized in that: A push-pull ring (19) is fixedly installed on the side of the first chute (151) close to the connecting disc (11). A connecting sleeve (18) is fixedly installed inside the push-pull ring (19). A dust cover (110) is sleeved outside the front retaining cover (111). The dust cover (110) is fixedly connected to the disc body (13) and the pulling sleeve (15).

4. A special spinning chuck according to claim 1, wherein: A first heat insulation plate (112) is provided between the front retaining cover (111) and the pulling sleeve (15). A second heat insulation plate (113) is provided between the dust cover (110) and the disc body (13).

5. A special spinning chuck according to claim 1, characterized in that: The reset mechanism (2) includes an annular disc (22) and guide rods (21) fixedly connected to the plurality of claws (17). The plurality of guide rods (21) are in a conical radial shape. A plurality of linear bearings (23) are fixedly installed on the annular disc (22) in a circumferential array in a penetrating manner. The plurality of linear bearings (23) are respectively slidably sleeved on the corresponding guide rods (21). A plurality of spring telescopic rods (24) are fixedly installed between the annular disc (22) and the front retaining cover (111) in a circumferential array.

6. A special spinning chuck according to claim 5, characterized in that: The air-cooling mechanism (3) includes an annular plate one (31) and an annular plate two (33). A plurality of blades (32) are fixedly installed between the annular plate one (31) and the annular plate two (33) and are distributed in a circumferential array. The flow guide cone one (34) is fixedly connected to some parts of the annular disc (22) away from the chuck body (1).

7. A special spinning chuck according to claim 6, characterized in that: A flow guide cone two (35) is provided inside the annular plate two (33). A flow guide cone one (34) is provided inside the annular plate one (31). One side of the flow guide cone one (34) and the flow guide cone two (35) that are close to each other is fixedly connected. One side of the plurality of blades (32) close to the axes of the flow guide cone one (34) and the flow guide cone two (35) is fixedly connected to the flow guide cone one (34) and the flow guide cone two (35).

8. A special spinning chuck according to claim 7, characterized in that: A flow guide surface one (311) is provided inside the annular plate one (31). A conical air duct one (36) is formed between the flow guide surface one (311) and the flow guide cone one (34). A flow guide surface two (331) is provided inside the blade (32). A conical air duct two (37) is formed between the flow guide surface two (331) and the flow guide cone two (35).

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