Chuck and laser pipe cutting machine

Abstract

The utility model provides a chuck and a laser pipe cutting machine. The chuck comprises a fixing base. The clamping cylinder is rotatably mounted on the fixed seat; the rotary driving mechanism is in transmission connection with the clamping cylinder and drives the clamping cylinder to rotate; the clamping mechanism comprises a clamping jaw assembly, a clamping transmission assembly, a push-pull bearing and a clamping driving assembly. The clamping jaw assembly can be movably arranged on the clamping cylinder in the radial direction of the clamping cylinder. The clamping driving assembly is arranged on the fixing base, and the clamping transmission assembly is arranged in the clamping cylinder. The outer ring of the push-pull bearing is fixedly connected with the clamping driving assembly, and the inner ring of the push-pull bearing is movably arranged outside the clamping cylinder in a sleeving mode and penetrates through the clamping cylinder to be fixedly connected with the clamping transmission assembly. The clamping driving assembly drives the clamping transmission assembly to move in the axial direction of the clamping cylinder, and the clamping transmission assembly is in transmission connection with the clamping jaw assembly. According to the chuck, the rotation inertia of the chuck can be reduced, a gas distribution ring is omitted, the clamping efficiency is effectively improved, the cost is reduced, and the structure is simple.

Description

Technical Field

[0001] The present application belongs to the field of laser processing technology, and more specifically, relates to a chuck and a laser tube cutting machine. Background Art

[0002] When laser cutting is used for pipe cutting, the pipe is generally clamped and rotated by a chuck. The loosening or clamping of the chuck is usually driven by a cylinder. In related technologies, the cylinder is usually fixed inside the chuck, and it rotates synchronously with the chuck when the chuck rotates. This not only increases the rotational inertia of the chuck, but also requires connection to the outside through a gas ring or an electric slip ring, making the structure of the chuck complex and costly. At the same time, due to the structure of the gas ring itself, during the inflation process, the sealing ring of the gas ring is easily pressed to the side where the rotating end is located due to the unequal air pressure on both sides. When the chuck rotates at this time, it is easy to cause the sealing ring to wear. Therefore, when clamping, the chuck needs to wait until the cylinder is fully inflated before executing the next action, which leads to low clamping efficiency. Utility Model Content

[0003] The embodiments of the present application provide a chuck that can improve clamping efficiency, reduce the rotational inertia of the chuck, reduce costs, and has a simple structure.

[0004] The technical solution adopted in the embodiment of the present application is to provide a chuck, comprising:

[0005] Fixed seat;

[0006] a cartridge rotatably mounted on the fixing seat;

[0007] a rotary drive mechanism, in transmission connection with the cartridge, and driving the cartridge to rotate; and

[0008] The clamping mechanism includes a clamping claw assembly, a clamping transmission assembly, a push-pull bearing, and a clamping drive assembly;

[0009] The clamping jaw assembly can be movably arranged on the clamping barrel along the radial direction of the clamping barrel to clamp or release the workpiece;

[0010] The clamping drive assembly is arranged on the fixing seat, and the clamping transmission assembly is arranged in the cartridge;

[0011] The outer ring of the push-pull bearing is fixedly connected to the clamping drive assembly, the inner ring of the push-pull bearing is movably sleeved outside the cartridge, and the inner ring of the push-pull bearing passes through the cartridge and is fixedly connected to the clamping drive assembly;

[0012] The clamping drive assembly drives the clamping transmission assembly to move along the axial direction of the cartridge, and the clamping transmission assembly is in transmission connection with the clamping jaw assembly so that the clamping jaw assembly moves along the radial direction of the cartridge.

[0013] Furthermore, the clamping mechanism also includes a transmission member, and the inner ring of the push-pull bearing is connected and fixed to the clamping transmission assembly through the transmission member. A through groove extending along the axial direction of the clamp is provided on the clamp, and the transmission member can be movably inserted into the through groove along the axial direction of the clamp, and one end of the transmission member is connected and fixed to the inner ring of the push-pull bearing, and the other end of the transmission member is connected and fixed to the clamping transmission assembly.

[0014] Furthermore, the clamping mechanism also includes a guide member, and a guide groove extending along the axial direction of the cartridge is provided on the cartridge, one end of the guide member is fixedly connected to the inner ring of the push-pull bearing, and the other end of the guide member can be movably installed in the guide groove along the axial direction of the cartridge.

[0015] Furthermore, the transmission members include a plurality of the through slots, the through slots include a plurality of through slots, the through slots are spaced apart along the circumferential direction of the cartridge, and each transmission member is respectively passed through one of the through slots;

[0016] and / or,

[0017] There are multiple guide members, and there are multiple guide grooves. The guide members are arranged at intervals along the circumferential direction of the cartridge, and each guide member is installed in one guide groove.

[0018] Furthermore, the clamping drive assembly includes a plurality of clamping drive assemblies, and the plurality of clamping drive assemblies are spaced apart along the circumferential direction of the cartridge, and each of the clamping drive assemblies is respectively connected and fixed to the outer ring of the push-pull bearing.

[0019] Furthermore, the clamping jaw assembly includes two first sliders spaced apart along a first direction and two second sliders spaced apart along a second direction, wherein the first direction and the second direction are perpendicular to the axial direction of the cartridge;

[0020] The clamping transmission assembly includes a first clamping transmission assembly and a second clamping transmission assembly,

[0021] The push-pull bearing includes a first push-pull bearing and a second push-pull bearing, and the first push-pull bearing and the second push-pull bearing are spaced apart along the axial direction of the cartridge.

[0022] The clamping drive assembly includes a first clamping drive assembly and a second clamping drive assembly,

[0023] The outer ring of the first push-pull bearing is fixedly connected to the first clamping drive assembly, the inner ring of the first push-pull bearing is movably sleeved outside the cartridge, and the inner ring of the first push-pull bearing is fixedly connected to the first clamping transmission assembly, the first clamping drive assembly drives the first clamping transmission assembly to move along the axial direction of the cartridge, and the first clamping transmission assembly is transmission-connected to each of the first sliders so that each of the first sliders moves along the radial direction of the cartridge;

[0024] The outer ring of the second push-pull bearing is fixedly connected to the second clamping drive assembly, the inner ring of the second push-pull bearing is movably sleeved outside the cartridge, and the inner ring of the second push-pull bearing is fixedly connected to the second clamping transmission assembly, the second clamping drive assembly drives the second clamping transmission assembly to move along the axial direction of the cartridge, and the second clamping transmission assembly is transmission-connected to each of the second sliders so that each of the second sliders moves along the radial direction of the cartridge.

[0025] Furthermore, the clamping transmission assembly includes:

[0026] a push-pull rod disposed in the cartridge; and

[0027] A lever rotatably mounted on the cartridge;

[0028] One end of the push-pull rod is fixedly connected to the inner ring of the push-pull bearing, the other end of the push-pull rod is fixedly connected to one end of the lever, and the other end of the lever is connected to the clamping jaw assembly.

[0029] Furthermore, the chuck also includes a slewing bearing, the outer ring of the slewing bearing is fixedly connected to the chuck, the inner ring of the slewing bearing is connected to the fixed seat, and the rotation drive mechanism is transmission-connected to the outer ring of the slewing bearing.

[0030] Furthermore, the chuck further comprises a support assembly, and the support assembly comprises a support seat and a support bearing.

[0031] The support seat is arranged on the fixed seat, and the support bearing and the rotary bearing are spaced apart along the axial direction of the cartridge.

[0032] The outer ring of the support bearing is connected and fixed to the support seat, and the inner ring of the support bearing is connected and fixed to the cartridge.

[0033] An embodiment of the present application further provides a laser tube cutting machine, comprising a laser processing head and the chuck as described above, wherein the laser processing head processes a workpiece on the chuck.

[0034] The advantageous effects of the chuck provided by the embodiment of the present application are as follows: by placing the clamping drive assembly on a fixed seat and cooperating to connect and fix the outer ring of the push-pull bearing to the clamping drive assembly, the inner ring of the push-pull bearing is movably sleeved outside the chuck, and the inner ring of the push-pull bearing passes through the chuck and is connected and fixed to the clamping transmission assembly. When the clamping drive mechanism drives the clamping transmission assembly to move in the axial direction of the chuck, the clamping transmission assembly drives the clamping jaw assembly to move in the radial direction of the chuck, thereby clamping or releasing the workpiece; when the rotary drive mechanism drives the chuck to rotate, the clamping drive assembly does not rotate synchronously, thereby reducing the rotational inertia of the chuck and eliminating the need for a gas ring, effectively improving clamping efficiency, reducing costs, and simplifying the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0036] Figure 1 A schematic diagram of the three-dimensional structure of a chuck provided in an embodiment of the present application;

[0037] Figure 2 A cross-sectional structural diagram of the chuck provided in an embodiment of the present application, cut along the axis of the chuck;

[0038] Figure 3 A schematic diagram of the three-dimensional structure of the clamping mechanism used in the embodiment of the present application;

[0039] Figure 4 for Figure 3 A local enlarged schematic diagram at point A;

[0040] Figure 5 This is an exploded diagram of the clamping mechanism used in the embodiment of the present application;

[0041] Figure 6 A schematic diagram of the three-dimensional structure of the cartridge used in the embodiment of the present application;

[0042] Figure 7 This is a schematic diagram of the three-dimensional structure of the first push-pull bearing used in the embodiment of the present application;

[0043] Figure 8 This is a schematic diagram of the three-dimensional structure of the second push-pull bearing used in the embodiment of the present application.

[0044] Among them, the reference numerals in the figures are:

[0045] 10. Fixed seat; 20. Card cylinder; 201. Through groove; 202. Guide groove; 21. Cylinder; 22. Card seat; 221. Slide groove; 30. Rotary drive mechanism; 31. Driven gear; 40. Clamping mechanism; 41. Clamping jaw assembly; 411. First slider; 412. Second slider; 42. Clamping transmission assembly; 421. First clamping transmission assembly; 422. Second clamping transmission assembly; 423. Push-pull rod; 424. Lever; 43. Push-pull bearing; 431. First push-pull bearing; 432. Second push-pull bearing; 44. Clamping drive assembly; 441. First clamping drive assembly; 442. Second clamping drive assembly; 45. Transmission member; 46. Guide member; 50. Rotary bearing; 60. Support assembly; 61. Support seat; 62. Support bearing. DETAILED DESCRIPTION

[0046] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0047] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0048] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0049] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0050] See also Figure 1 and Figure 2 The chuck provided in the embodiment of the present application is now described. The chuck provided in the embodiment of the present application includes: a fixing seat 10, a chuck 20, a rotation drive mechanism 30 and a clamping mechanism 40.

[0051] The fixing seat 10 is used to provide support and fixation for the cartridge 20 and the rotary drive mechanism 30 .

[0052] The cartridge 20 is rotatably mounted on the fixing base 10 .

[0053] The rotary drive mechanism 30 is in transmission connection with the cartridge 20 , and the rotary drive mechanism 30 is used to drive the cartridge 20 to rotate.

[0054] The clamping mechanism 40 includes a clamping jaw assembly 41, a clamping transmission assembly 42, a push-pull bearing 43, and a clamping drive assembly 44. The clamping jaw assembly 41 is movably disposed on the chuck 20 along the radial direction of the chuck 20 to clamp or release the workpiece.

[0055] The clamping drive assembly 44 is disposed on the fixing base 10 , and the clamping transmission assembly 42 is disposed in the cartridge 20 .

[0056] The outer ring of the push-pull bearing 43 is fixedly connected to the clamping drive assembly 44 , and the inner ring of the push-pull bearing 43 is movably sleeved outside the cartridge 20 , and the inner ring of the push-pull bearing 43 passes through the cartridge 20 and is fixedly connected to the clamping transmission assembly 42 .

[0057] The clamping drive assembly 44 drives the clamping transmission assembly 42 to move along the axial direction of the cartridge 20 . The clamping transmission assembly 42 is in transmission connection with the clamping jaw assembly 41 so that the clamping jaw assembly 41 moves along the radial direction of the cartridge 20 .

[0058] Among them, Figure 1 As shown, the axial direction of the cartridge 20 is Figure 1 The X-axis in the following is shown, and the first direction is Figure 1 The Z axis is shown in the figure, and the second direction is shown in the figure. Figure 1 The Y-axis is shown in FIG.

[0059] The working process of the chuck of the embodiment of the present application is as follows:

[0060] When it is necessary to clamp or loosen the workpiece, the clamping drive assembly 44 drives the push-pull bearing 43 to move in the axial direction. Since the inner ring of the push-pull bearing 43 is fixedly connected to the clamping transmission assembly 42, the clamping transmission assembly 42 is synchronously driven to move in the axial direction of the chuck 20, thereby realizing the movement of the clamping jaw assembly 41 in the radial direction of the chuck 20, and then realizing the mutual approach or opening of the clamping jaw assembly 41, thereby realizing the clamping or loosening of the workpiece.

[0061] When it is necessary to drive the workpiece to rotate, the rotary drive mechanism 30 drives the chuck 20 to rotate. Since the outer ring of the push-pull bearing 43 is connected and fixed to the clamping drive assembly 44, and the inner ring of the push-pull bearing 43 is connected and fixed to the clamping transmission assembly 42, the clamping jaw assembly 41 can be driven to rotate synchronously, and at the same time the clamping drive assembly 44 will not rotate.

[0062] The chuck provided in the embodiment of the present application is provided with a clamping drive assembly 44 disposed on a fixed seat 10, and the outer ring of the push-pull bearing 43 is connected and fixed to the clamping drive assembly 44, the inner ring of the push-pull bearing 43 is movably sleeved outside the chuck 20, and the inner ring of the push-pull bearing 43 is connected and fixed to the clamping transmission assembly 42. When the workpiece needs to be rotated, the clamping drive assembly 44 does not rotate synchronously, thereby reducing the rotational inertia of the chuck and eliminating the gas ring. Due to the structure of the gas ring itself, during the inflation process, the sealing ring of the gas ring is easily pressed to the side where the rotating end is located due to the unequal air pressure on both sides. When the chuck rotates at this time, it is easy to cause the sealing ring to wear. Therefore, when clamping, the chuck needs to wait until the cylinder is fully inflated before executing the next action, which leads to low clamping efficiency. However, due to the omission of the gas ring, the embodiment of the present application can effectively improve the clamping efficiency, reduce costs, and has a simple structure.

[0063] See also Figure 3 、 Figure 6 The clamping mechanism 40 may further include a transmission member 45, which securely connects the inner ring of the push-pull bearing 43 to the clamping transmission assembly 42. The cartridge 20 is provided with a through slot 201 extending axially along the cartridge 20. The transmission member 45 is movably inserted into the through slot 201 along the axial direction of the cartridge 20. One end of the transmission member 45 is securely connected to the inner ring of the push-pull bearing 43, while the other end is securely connected to the clamping transmission assembly 42. The provision of the transmission member 45 secures the inner ring of the push-pull bearing 43 to the clamping transmission assembly 42. Furthermore, the through slot 201, which extends axially along the cartridge 20, serves to limit the travel of the clamping drive assembly 44.

[0064] See also Figure 4 The clamping drive assembly 44 can be a telescopic cylinder or a linear motor. Of course, the clamping drive assembly 44 can also adopt a rotary motor, and cooperate with the transmission mechanism to convert the rotary motion of the rotary motor into the linear motion of the push-pull bearing 43.

[0065] See also Figure 3 、 Figure 6The clamping mechanism 40 may further include a guide member 46. A guide groove 202 extending in the axial direction of the cartridge 20 is defined on the cartridge 20. One end of the guide member 46 is fixedly connected to the inner ring of the push-pull bearing 43, and the other end of the guide member 46 is movably mounted in the guide groove 202 in the axial direction of the cartridge 20. The cooperation between the guide member 46 and the guide groove 202 allows the push-pull bearing 43 to move more smoothly in the axial direction of the cartridge 20, thereby preventing it from getting stuck.

[0066] See also Figures 6 to 8 The transmission members 45 may include multiple transmission members 45 and multiple through-slots 201. Each through-slot 201 is spaced apart along the circumference of the cartridge 20, and each transmission member 45 is disposed within a respective through-slot 201. The provision of multiple transmission members 45 ensures uniform force on the push-pull bearing 43. The guide members 46 may include multiple guide slots 202. Each guide member 46 is spaced apart along the circumference of the cartridge 20, and each guide member 46 is mounted within a respective guide slot 202. The provision of multiple guide members 46 further improves the smoothness of the movement of the push-pull bearing 43 in the axial direction of the cartridge 20.

[0067] See also Figure 4 The clamping drive assembly 44 may include multiple clamping drive assemblies 44, which are spaced apart along the circumference of the cartridge 20. Each clamping drive assembly 44 is respectively connected and fixed to the outer ring of the push-pull bearing 43. By providing multiple clamping drive assemblies 44, the push-pull bearing 43 can be pushed more easily. Specifically, the clamping drive assemblies 44 may include two, three, or more.

[0068] See also Figures 4 and 5 The clamping jaw assembly 41 may include two first sliders 411 spaced apart along a first direction and two second sliders 412 spaced apart along a second direction. The first direction and the second direction are perpendicular to the axial direction of the cartridge 20. Figure 1 shown.

[0069] The clamping transmission assembly 42 includes a first clamping transmission assembly 421 and a second clamping transmission assembly 422. The push-pull bearing 43 includes a first push-pull bearing 431 and a second push-pull bearing 432, which are spaced apart along the axial direction of the cartridge 20. The clamping drive assembly 44 includes a first clamping drive assembly 441 and a second clamping drive assembly 442.

[0070] The outer ring of the first push-pull bearing 431 is fixedly connected to the first clamping drive assembly 441. The inner ring of the first push-pull bearing 431 is movably sleeved outside the cartridge 20. The inner ring of the first push-pull bearing 431 is fixedly connected to the first clamping transmission assembly 421. The first clamping drive assembly 441 drives the first clamping transmission assembly 421 to move axially in the cartridge 20. The first clamping transmission assembly 421 is in transmission connection with each first slider 411 to enable each first slider 411 to move radially in the cartridge 20. Because the two first sliders 411 share the same first push-pull bearing 431, synchronous clamping and loosening of the two first sliders 411 in the first direction can be achieved.

[0071] The outer ring of the second push-pull bearing 432 is fixedly connected to the second clamping drive assembly 442. The movable inner ring of the second push-pull bearing 432 is sleeved outside the cartridge 20. The inner ring of the second push-pull bearing 432 is fixedly connected to the second clamping transmission assembly 422. The second clamping drive assembly 442 drives the second clamping transmission assembly 422 to move axially along the cartridge 20. The second clamping transmission assembly 422 is in transmission connection with each second slider 412 to enable each second slider 412 to move radially along the cartridge 20. By sharing the same second push-pull bearing 432, the two second sliders 412 can be clamped and released synchronously in the second direction. Furthermore, by using different first push-pull bearings 431 and second push-pull bearings 432 for the first and second sliders 411 and 412, respectively, asynchronous clamping and releasing in the first and second directions can be achieved, which is suitable for clamping square or irregular-shaped tubular workpieces. Of course, in other embodiments of the present application, only the first slider 411 or only the second slider 412 can be provided.

[0072] See also Figures 4 and 5 The clamping transmission assembly 42 may include a push-pull rod 423 and a lever 424. The push-pull rod 423 is disposed within the cartridge 20. The lever 424 is rotatably mounted on the cartridge 20. One end of the push-pull rod 423 is fixedly connected to the inner ring of the push-pull bearing 43, while the other end of the push-pull rod 423 is fixedly connected to one end of the lever 424. The other end of the lever 424 is connected to the clamping jaw assembly 41. The arrangement of the lever 424 allows the push-pull rod 423 to rotate when it moves axially along the cartridge 20, thereby driving the clamping jaw assembly 41 to move radially along the cartridge 20 to open or clamp the workpiece.

[0073] See also Figures 1 to 2 The chuck may further include a slewing bearing 50, the outer ring of which is fixedly connected to the cartridge 20, the inner ring of which is connected to the fixed seat 10, and the rotary drive mechanism 30 is in driving connection with the outer ring of the slewing bearing 50. Due to the arrangement of the slewing bearing 50, when the rotary drive mechanism 30 is driven, the outer ring of the slewing bearing 50 can be driven to rotate, thereby rotating the cartridge 20.

[0074] See also Figures 1 to 2 The chuck can also include a support assembly 60, which includes a support seat 61 and a support bearing 62. The support seat 61 is mounted on the fixed seat 10. The support bearing 62 and the slewing bearing 50 are spaced apart along the axial direction of the chuck 20. The outer ring of the support bearing 62 is fixedly connected to the support seat 61, while the inner ring of the support bearing 62 is fixedly connected to the chuck 20. The addition of the support assembly 60 reduces the self-constraining torque of the chuck when clamping a workpiece, making the structure more stable and reliable.

[0075] See also Figures 1 to 2 The cartridge 20 may include a body 21 and a base 22 connected to one end of the body 21. The other end of the body 21 is rotatably mounted on the fixed base 10. The jaw assembly 41 is movably mounted on the base 22 along the radial direction of the cartridge 20. Specifically, the base 22 may be provided with a slide groove 221, and the jaw assembly 41 is movably mounted in the slide groove 221, thereby limiting the position of the jaw assembly 41.

[0076] See also Figure 1 The rotary drive mechanism 30 includes a driving member (not shown), a driving gear (not shown), and a driven gear 31. The driving member is mounted on the fixed base 10, and the driving gear is in driving connection with the driving member. The driven gear 31 is mounted on the outer ring of the slewing bearing 50 and meshes with the driving gear. When the driving member rotates the driving gear, the driven gear 31 drives the outer ring of the slewing bearing 50, thereby driving the cartridge 20.

[0077] An embodiment of the present application further provides a laser tube cutting machine, comprising a laser processing head (not shown) and a chuck in any of the above embodiments, wherein the laser processing head processes a workpiece on the chuck.

[0078] The laser tube cutting machine of the embodiment of the present application includes the chuck in any of the above embodiments, and thus has the beneficial effects brought by the chuck in any of the above embodiments, which will not be described in detail here.

[0079] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A chuck, characterized in that: include: Fixed seat; A cartridge, rotatably mounted on the fixing seat; A rotary drive mechanism is connected to the cartridge in a transmission manner, and the rotary drive mechanism drives the cartridge to rotate; as well as, The clamping mechanism includes a clamping claw assembly, a clamping transmission assembly, a push-pull bearing, and a clamping drive assembly; The clamping jaw assembly can be movably arranged on the clamping barrel along the radial direction of the clamping barrel to clamp or release the workpiece; The clamping drive assembly is arranged on the fixing seat, and the clamping transmission assembly is arranged in the cartridge; The outer ring of the push-pull bearing is connected and fixed to the clamping drive assembly, the inner ring of the push-pull bearing is movably sleeved outside the cartridge, and the inner ring of the push-pull bearing passes through the cartridge and is connected and fixed to the clamping drive assembly; The clamping drive assembly drives the clamping transmission assembly to move along the axial direction of the cartridge, and the clamping transmission assembly is in driving connection with the clamping jaw assembly so that the clamping jaw assembly moves along the radial direction of the cartridge.

2. The chuck according to claim 1, characterized in that The clamping mechanism also includes a transmission member, and the inner ring of the push-pull bearing is connected and fixed to the clamping transmission assembly via the transmission member. A through groove extending along the axial direction of the clamp is provided on the chuck, and the transmission member can be movably inserted into the through groove along the axial direction of the chuck, and one end of the transmission member is connected and fixed to the inner ring of the push-pull bearing, and the other end of the transmission member is connected and fixed to the clamping transmission assembly.

3. The chuck according to claim 2, characterized in that The clamping mechanism also includes a guide member, a guide groove extending along the axial direction of the cartridge is provided on the cartridge, one end of the guide member is fixedly connected to the inner ring of the push-pull bearing, and the other end of the guide member can be movably installed in the guide groove along the axial direction of the cartridge.

4. The chuck according to claim 3, characterized in that The transmission members include a plurality of through slots, the through slots include a plurality of through slots, the through slots are arranged at intervals along the circumferential direction of the cartridge, and each transmission member is respectively passed through one of the through slots; and / or, The guide members include a plurality of guide grooves, the guide members are arranged at intervals along the circumferential direction of the cartridge, and each guide member is installed in one guide groove.

5. The chuck according to any one of claims 1 to 4, characterized in that: The clamping drive assembly includes a plurality of clamping drive assemblies, and the plurality of clamping drive assemblies are arranged at intervals along the circumferential direction of the cartridge, and each of the clamping drive assemblies is respectively connected and fixed to the outer ring of the push-pull bearing.

6. The chuck according to any one of claims 1 to 4, characterized in that: The clamping jaw assembly comprises two first sliding blocks spaced apart along a first direction and two second sliding blocks spaced apart along a second direction, wherein the first direction and the second direction are perpendicular to the axial direction of the cartridge; The clamping transmission assembly includes a first clamping transmission assembly and a second clamping transmission assembly, The push-pull bearing comprises a first push-pull bearing and a second push-pull bearing, wherein the first push-pull bearing and the second push-pull bearing are arranged at intervals along the axial direction of the cartridge. The clamping drive assembly includes a first clamping drive assembly and a second clamping drive assembly. The outer ring of the first push-pull bearing is connected and fixed to the first clamping drive assembly, the inner ring of the first push-pull bearing is movably sleeved outside the cartridge, and the inner ring of the first push-pull bearing is connected and fixed to the first clamping transmission assembly, the first clamping drive assembly drives the first clamping transmission assembly to move along the axial direction of the cartridge, and the first clamping transmission assembly is connected to each of the first sliders in a transmission manner so that each of the first sliders moves along the radial direction of the cartridge; The outer ring of the second push-pull bearing is connected and fixed to the second clamping drive assembly, the inner ring of the second push-pull bearing is movably sleeved outside the cartridge, and the inner ring of the second push-pull bearing is connected and fixed to the second clamping transmission assembly, the second clamping drive assembly drives the second clamping transmission assembly to move along the axial direction of the cartridge, and the second clamping transmission assembly is transmission-connected to each of the second sliders to enable each of the second sliders to move along the radial direction of the cartridge.

7. The chuck according to any one of claims 1 to 4, characterized in that: The clamping transmission assembly comprises: A push-pull rod is disposed in the cartridge; and A lever, rotatably mounted on the cartridge; One end of the push-pull rod is fixedly connected to the inner ring of the push-pull bearing, the other end of the push-pull rod is fixedly connected to one end of the lever, and the other end of the lever is connected to the clamping jaw assembly.

8. The chuck according to any one of claims 1 to 4, characterized in that: The chuck also includes a slewing bearing, the outer ring of the slewing bearing is connected and fixed to the cartridge, the inner ring of the slewing bearing is connected to the fixing seat, and the rotary drive mechanism is drivingly connected to the outer ring of the slewing bearing.

9. The chuck according to claim 8, characterized in that The chuck also includes a support assembly, which includes a support seat and a support bearing. The support seat is arranged on the fixed seat, and the support bearing and the slewing bearing are arranged at intervals along the axial direction of the cartridge. The outer ring of the support bearing is connected and fixed to the support seat, and the inner ring of the support bearing is connected and fixed to the cartridge.

10. A laser tube cutting machine, characterized in that: It comprises a laser processing head and a chuck as claimed in any one of claims 1 to 9, wherein the laser processing head processes a workpiece on the chuck.

Images