Chuck for a machining device and machining device

Abstract

The application provides a chuck for a machining device, comprising: a plurality of chuck jaw assemblies; a linear drive unit for generating a linear drive action parallel to a rotation axis of the chuck; a centering transmission mechanism configured to transmit the linear drive action to each of the chuck jaw assemblies and to drive the plurality of chuck jaw assemblies radially and about the rotation axis; and a sleeve for covering at least a portion of the centering transmission mechanism and extending parallel to the rotation axis. The centering transmission mechanism comprises a linear motion part for transmitting the linear drive action to each of the chuck jaw assemblies, and a first guide structure is provided between the linear motion part and the sleeve to guide linear motion of the linear motion part along the rotation axis. According to some embodiments of the application, the problem of the centering transmission mechanism being offset due to eccentric load can be solved, the transmission torque is large and stable, and the stable clamping force and high clamping precision of the chuck are ensured. The application also provides a corresponding machining device.

Description

Technical Field

[0001] This invention relates to the field of machining equipment technology, and in particular to a chuck for a machining apparatus and a corresponding machining apparatus. Background Technology

[0002] For machining equipment that processes workpieces with a certain degree of symmetry, such as laser tube cutting machines, the clamping accuracy, efficiency, and stability of the chuck are crucial. Traditional chucks often use cylinders to drive long linkage mechanisms and / or lever mechanisms to drive the jaws to clamp the workpiece. This method suffers from drawbacks such as excessively long transmission chains and the synchronous structure being prone to tilting under eccentric loads, making it difficult to guarantee centering accuracy and clamping force. Moreover, the jaw sliding mechanism driven by long linkage mechanisms and / or lever mechanisms is prone to jamming and reduced clamping force due to dust or slag accumulation. In addition, some other types of chucks in existing technology are also prone to problems such as transmission jamming and insufficient capacity to withstand eccentric loads due to their inherent structure.

[0003] It is evident that further improvements to the chuck structure are still needed in order to enable the machining device to achieve the highest possible machining accuracy. Summary of the Invention

[0004] The object of the present invention is to provide an improved chuck for a machining apparatus and a corresponding machining apparatus, so as to at least partially solve the above-mentioned problems existing in the prior art.

[0005] According to a first aspect of the present invention, a chuck for a machining apparatus is provided, comprising:

[0006] Multiple gripper components;

[0007] A linear drive unit for generating a linear drive action parallel to the rotation axis of the chuck;

[0008] The transmission mechanism is configured to drive a plurality of jaw assemblies radially and centrally about the axis of rotation by transmitting the linear drive action to each jaw assembly, and includes a linear motion portion for transmitting the linear drive action to each jaw assembly.

[0009] A sleeve, which covers at least a portion of the centering transmission mechanism and extends parallel to the axis of rotation; and

[0010] A first guide structure is disposed between the linear motion part and the sleeve, and guides the linear motion of the linear motion part along the rotation axis.

[0011] According to the first aspect of the invention, the chuck for a machining apparatus supports and guides the linear motion portion of the centering transmission mechanism by utilizing a first guide structure between the sleeve and the centering transmission mechanism, thereby driving multiple jaw assemblies radially and centrally to clamp and release the jaws. This solves the problem of the centering transmission mechanism shifting due to eccentric loads, provides a large and stable transmission torque, and ensures stable clamping force and high clamping accuracy.

[0012] According to an optional embodiment of the invention, all jaw assemblies of the chuck are driven in the same manner by the linear drive unit via the centering transmission mechanism. This embodiment further ensures stable, synchronized, and highly aligned torque transmission.

[0013] According to an optional embodiment of the present invention, the centering transmission mechanism is arranged along the rotation axis between the linear drive unit and the plurality of jaw assemblies, and is connected at one end to the output end of the linear drive unit via the linear motion portion, while at the other end it further includes a gear transmission portion and is coupled to the plurality of jaw assemblies via the gear transmission portion. With this embodiment, on the one hand, the linear drive action from the linear drive unit can be transmitted efficiently and stably by means of the linear motion portion of the centering transmission mechanism; on the other hand, because the gear transmission portion is coupled to the plurality of jaw assemblies, the transmission chain is short, making it easy to ensure centering accuracy, and the clamping force of the jaws is linearly related to the driving force from the linear drive unit, making it easy to adjust the clamping force of the jaws by changing the driving force output by the linear drive unit.

[0014] According to an optional embodiment of the present invention, the first guiding structure includes a plurality of guide rail mechanisms arranged in a rotationally symmetrical manner about the axis of rotation, each guide rail mechanism being configured to withstand loads in all directions. With this embodiment, compared to prior art chucks where the linear motion portion is not supported or only slides directly against the inner wall of the sleeve, multiple guide rail mechanisms arranged rotationally symmetrically about the axis of rotation and adapted to withstand loads in all directions can support and guide the linear motion portion of the centering transmission mechanism, preventing misalignment of the centering transmission mechanism and avoiding the problem of jamming due to sliding friction between the linear motion portion and the inner wall surface of the sleeve during linear motion.

[0015] According to an optional embodiment of the present invention, the linear motion section includes a synchronization seat assembly associated with a plurality of jaw assemblies, the first guide structure is configured to guide the linear motion of the synchronization seat assembly, and the gear transmission section includes a plurality of transmission gear sets, each of the transmission gear sets meshing with a corresponding jaw assembly and the associated synchronization seat assembly to convert the linear drive action into a radial drive action on the jaw assembly. Through this embodiment, the linear drive action and the radial drive of the multiple jaw assemblies can be transmitted using the synchronization seat assembly and the plurality of transmission gear sets, resulting in high and stable torque transmission efficiency and ensuring synchronization and alignment accuracy.

[0016] According to an optional embodiment of the present invention, the synchronization seat assembly includes a synchronization seat body and a plurality of plate-shaped guide arms corresponding to the plurality of claw assemblies, mounted on the synchronization seat body and extending from the synchronization seat body along the rotation axis toward the respective claw assemblies. The end sections of the guide arms away from the synchronization seat body are formed into rack sections that mesh with the corresponding transmission gear sets, and the guide rail mechanism of the first guide structure is disposed between the respective guide arms and the sleeve. With this embodiment, a stable and synchronous transmission of linear drive motion can be achieved using a synchronization seat assembly including a synchronization seat body and a plurality of guide arms.

[0017] According to an optional embodiment of the invention, the rack section is located on the side of the guide arm facing the axis of rotation. This embodiment simplifies the structure of the centering transmission mechanism.

[0018] According to an optional embodiment of the present invention, the guide rail mechanism includes a strip guide rail and a slider that is shaped and slidably engaged with the corresponding strip guide rail. One of the strip guide rail and the slider is fixedly mounted on the inner wall surface of the sleeve, while the other is fixedly mounted on the corresponding guide arm. This embodiment makes the structure of the first guide structure simple and effective.

[0019] According to an optional embodiment of the present invention, the synchronizing seat body is formed as a hollow frame, having an extension dimension along the direction of the rotation axis, and having a cross-sectional shape that is rotationally symmetrical about the rotation axis in a section perpendicular to the rotation axis. With this embodiment, the frame structure of the synchronizing seat body enables it to withstand greater loads without easily deforming, thereby enabling more stable synchronous transmission of linear drive actions.

[0020] According to an optional embodiment of the present invention, the strip guide rail is fixedly mounted on the inner wall surface of the sleeve, and two sliders arranged at intervals along the rotation axis are fixedly mounted on each guide arm. This embodiment enables stable support and guidance of the linear motion of the synchronization seat assembly by means of the guide rail mechanism, and also strengthens the structure of the guide arms.

[0021] According to an optional embodiment of the present invention, the synchronizing seat body includes an end plate near the linear drive unit and a side plate extending perpendicularly to the end plate and toward the claw assembly. The side plate is circumferentially continuous, enclosing a hollow space opening toward the claw assembly. The guide arm is fixedly mounted to the side plate or fixedly mounted to the end plate as at least a part of the side plate. This embodiment provides a synchronizing seat assembly with a stable structure capable of withstanding large loads.

[0022] According to an optional embodiment of the present invention, the synchronization seat body further includes a plurality of reinforcing ribs, which are vertically mounted on the end plate within the hollow space and fixedly connected at both ends to the side plate. This embodiment provides a more structurally stable synchronization seat assembly.

[0023] According to an optional embodiment of the invention, the end plate has a through opening in the central region surrounding the axis of rotation. This embodiment reduces the weight of the synchronization seat assembly while facilitating the installation of the dust extraction pipe described later.

[0024] According to an optional embodiment of the present invention, each of the transmission gear sets includes a first gear meshing with the synchronizing seat assembly and a second gear meshing with the corresponding chuck assembly, the first gear and the second gear meshing with each other. Through this embodiment, the linear drive action is converted into a radial drive action for the chuck assembly using two gears respectively, which easily ensures clamping stability and centering accuracy. Moreover, under the same drive action output of the linear drive unit, the clamping force transmitted to the chuck assembly via the gear rack is constant, that is, the clamping force is linearly related to the drive action output of the linear drive unit. This allows for easy adjustment of the clamping force by changing the output of the linear drive unit, thereby enabling, for example, the use of a small clamping force to clamp thin-walled tubes without causing deformation.

[0025] According to an optional embodiment of the present invention, each of the jaw assemblies includes a jaw seat and jaws and rack portions located on opposite sides of the jaw seat, the rack portions meshing with a corresponding transmission gear set. This embodiment enables the driving action of the linear drive unit to be transmitted to the jaw assembly via a gear and rack system.

[0026] According to an optional embodiment of the present invention, the first gear is a large gear and the second gear is a small gear. This embodiment improves the transmission efficiency of the driving action.

[0027] According to an optional embodiment of the present invention, the chuck further includes a jaw mounting plate, wherein a through groove is formed on the jaw mounting plate at a position corresponding to the rack portion of each jaw assembly, and the second gear of the transmission gear set passes through the corresponding through groove and meshes with the rack portion of the corresponding jaw assembly. This embodiment allows for a smaller gap between the jaw seat of the jaw assembly and the jaw mounting plate, preventing small cutting waste from entering the chuck and preventing jamming of internal mechanisms, especially preventing jamming of gears and racks.

[0028] According to an optional embodiment of the present invention, the claw mounting plate is fixedly mounted on the end of the sleeve.

[0029] According to an optional embodiment of the present invention, the jaw mounting plate has a first surface facing the centering transmission mechanism and a second surface opposite to the first surface, and a second guide structure on the second surface is adapted to guide the jaw assembly to move radially. This embodiment facilitates controllable radial movement of the jaw assembly and, compared to prior art chucks that use sliding blocks to drive the jaw assembly, avoids cutting dust being squeezed and adhering to the sliding surface, thereby preventing the jaw assembly from accumulating dust and jamming.

[0030] According to an optional embodiment of the present invention, the chuck includes a set of multiple jaw assemblies, and the centering transmission mechanism includes a synchronizing seat assembly and multiple transmission gear sets that are respectively coupled to the multiple jaw assemblies. This embodiment allows for the use of, for example, a synchronizing seat assembly to drive, for example, three, four, or more jaw assemblies, resulting in a simple chuck structure with high synchronization and centering accuracy.

[0031] According to an optional embodiment of the present invention, the chuck includes multiple sets of multiple jaw assemblies, and the centering transmission mechanism includes multiple synchronizer assemblies corresponding to the multiple sets arranged sequentially along the rotation axis and multiple transmission gear sets respectively coupled to the corresponding jaw assemblies. Through this embodiment, for example, two synchronizer assemblies can drive two sets of four jaw assemblies, or three synchronizer assemblies can drive three sets of six jaw assemblies, or two synchronizer assemblies can drive two sets of six jaw assemblies, and each set of jaw assemblies can independently clamp and release.

[0032] According to an optional embodiment of the present invention, the synchronization seat assembly is directly connected to the output end of the linear drive unit or connected via a push rod. This embodiment enables the synchronization seat assembly, which is located away from the linear drive unit, to be driven via the push rod.

[0033] According to an optional embodiment of the present invention, the linear drive unit includes drive groups corresponding to the groups of the chuck assemblies, each drive group including one or more drive cylinders.

[0034] According to an optional embodiment of the present invention, the linear drive unit is mounted on the spindle of the chuck, and the sleeve is directly or indirectly mounted on the spindle.

[0035] According to an optional embodiment of the present invention, the chuck further includes a dust extraction tube extending about the axis of rotation, one end of the dust extraction tube extending to the jaw mounting plate and facing the clamping station opening between the plurality of jaw assemblies, and the other end being connected to an air distribution device.

[0036] According to a second aspect of the invention, a processing apparatus, particularly a tube cutter, especially a laser tube cutter, is provided, which includes at least a chuck for processing apparatus as described in the first aspect of the invention. Attached Figure Description

[0037] The invention will now be described in more detail with reference to the accompanying drawings, which will provide a better understanding of its principles, features, and advantages. The drawings include:

[0038] Figure 1 A cross-sectional view of a chuck for a machining apparatus according to an exemplary embodiment of the present invention is shown schematically.

[0039] Figure 2 A perspective view of a portion of a chuck for a machining apparatus according to an exemplary embodiment of the present invention is shown schematically.

[0040] Figure 3 Enlarged to show Figure 1 The part within the dashed box.

[0041] Figure 4 The diagram schematically shows a side view of a portion of a chuck for a machining apparatus according to an exemplary embodiment of the present invention, viewed from one side of the jaw assembly toward the side of the linear drive unit. Detailed Implementation

[0042] To make the technical problems to be solved, the technical solutions, and the beneficial technical effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and several exemplary embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of protection of this invention.

[0043] Figure 1 A cross-sectional view of a chuck 100 for a machining apparatus according to an exemplary embodiment of the present invention is shown schematically. Figure 2 A perspective view of a portion of a chuck 100 for a processing apparatus according to an exemplary embodiment of the present invention is shown schematically. Figure 3 Enlarged to show Figure 1 The part within the dashed box, where Figure 3 The lower half shows a cross-section taken along the plane of rotation of the transmission gear set 320, that is, the center plane of the sleeve 4, and... Figure 3 The upper part shows a cross section taken along a plane parallel to the plane of rotation of the transmission gear set 320, that is, parallel to the center plane of the sleeve 4. Figure 4 The diagram schematically shows a side view of a portion of a chuck 100 for a machining apparatus according to an exemplary embodiment of the present invention, viewed from one side of the jaw assembly 1 toward the side of the linear drive unit 2.

[0044] like Figures 1 to 4As shown, a chuck 100 for a machining apparatus according to an exemplary embodiment of the present invention includes a plurality of jaw assemblies 1, a linear drive unit 2, and a centering transmission mechanism 3 that drivesly connects the plurality of jaw assemblies 1 to the linear drive unit 2. The linear drive unit 2 is mounted on the spindle 8 of the chuck 100 and rotates with the spindle 8, and is used to generate a linear drive action parallel to the rotation axis L of the chuck 100. The linear drive unit 2 is, for example, a plurality of drive cylinders, which are mounted on the spindle 8 in a rotationally symmetrical arrangement. The centering transmission mechanism 3 is arranged along the rotation axis L between the linear drive unit 2 and the plurality of jaw assemblies 1, connected to the output end of the linear drive unit 2 and drivenly coupled to all the jaw assemblies 1, and configured to transmit the linear drive action of the linear drive unit 2 to each jaw assembly 1, driving the plurality of jaw assemblies 1 radially and centered about the rotation axis L to achieve centering, clamping, and releasing actions of the plurality of jaw assemblies 1. Here, the term "centering" is specifically used to describe equidistant and synchronous actions or movements about the rotation axis L. Thus, in the chuck 100 according to the present invention, all jaw assemblies 1 of the chuck 100 are driven in the same manner by the linear drive unit 2 via the centering transmission mechanism 3. Furthermore, the chuck 100 also includes: a sleeve 4, which is directly or indirectly mounted on the spindle 8 and rotates with the spindle 8, and extends parallel to the rotation axis L to cover at least a portion of the centering transmission mechanism 3; a first guide structure 5, which is disposed between the centering transmission mechanism 3 and the sleeve 4 to support the centering transmission mechanism 3 and guide part of its movement; and a jaw mounting plate 6, which is fixedly mounted on the end of the sleeve 4 near the jaw assembly 1, for mounting a plurality of jaw assemblies 1. Here, the spindle 8 refers to a spindle in a general sense capable of driving the chuck 100 and thus the clamped workpiece to rotate. Furthermore, a through window 40 may be opened on the sleeve 4 to facilitate weight reduction and assembly / maintenance work.

[0045] The centering transmission mechanism 3 includes a linear motion section 31 and a gear transmission section 32 coupled to each other. At one end, the linear motion section 31 is connected to the output end of the linear drive unit 2, while at the other end, the gear transmission section 32 is coupled to multiple jaw assemblies 1. The linear motion section 31 is configured to transmit linear drive motion from the linear drive unit 2 to each jaw assembly 1 via linear motion parallel to the rotation axis L. The gear transmission section 32 converts the linear drive motion transmitted by the linear motion section 31 into radial drive motion that drives each jaw assembly 1 to perform radial motion about the rotation axis L through gear meshing and rack and pinion meshing. A first guide structure 5 is disposed between the sleeve 4 and the linear motion section 31 of the centering transmission mechanism 3 to guide the linear motion of the linear motion section 31 along the rotation axis L.

[0046] Especially Figure 2As shown, the linear motion portion 31 of the centering transmission mechanism 3 includes at least one synchronization seat assembly 310. Each synchronization seat assembly 310 is associated with a plurality of jaw assemblies 1, i.e., it is driven by the jaw assemblies 1 via a gear transmission portion 32. The plurality of jaw assemblies 1 are arranged rotationally symmetrically about the rotation axis L. Each synchronization seat assembly 310 includes at least a synchronization seat body 311 and a plurality of guide arms 312. The synchronization seat body 311 is formed as a hollow frame, having an extension dimension along the direction of the rotation axis L, and having a cross-sectional shape that is rotationally symmetrical about the rotation axis L in each section perpendicular to the rotation axis L. The plurality of guide arms 312 are mounted on the synchronization seat body 311 in a manner corresponding to the plurality of jaw assemblies 1, i.e., they are also mounted rotationally symmetrically about the rotation axis L on the synchronization seat body 311, and extend from the synchronization seat body 311 along the rotation axis L toward the corresponding jaw assembly 1, so as to be driven by the jaw assembly 1 on the jaw assembly 1 side via the gear transmission portion 32. The synchronizing seat body 311 includes an end plate near the linear drive unit 2 and a side plate extending perpendicularly to the end plate and towards the claw assembly 1. The side plate is circumferentially continuous, enclosing a hollow space facing the claw assembly. Multiple guide arms 312 are fixedly mounted on the side plate or are fixedly mounted on the end plate as at least a part of the side plate. Furthermore, the synchronizing seat body 311 may also include multiple reinforcing ribs, which are vertically mounted on the end plate within the hollow space and fixedly connected to the side plate at both ends. This strengthens the structural strength of the synchronizing seat body 311, enabling it to withstand greater loads without deformation and ensuring the synchronicity and alignment of the drive action transmission. Additionally, the end plate has a through-hole in the central region around the rotation axis L, which reduces the weight of the synchronizing seat assembly 310 and facilitates the arrangement of other components, such as the dust extraction pipe 9 described later.

[0047] The first guiding structure 5 includes multiple guide rail mechanisms 50 corresponding to multiple claw assemblies 1, i.e., multiple guide arms 312, and is therefore arranged in a rotationally symmetrical manner about the axis of rotation L. Each guide rail mechanism 50 of the first guiding structure 5 is disposed between the corresponding guide arm 312 and the inner wall surface of the sleeve 4, and is configured to guide the linear movement of the synchronization seat assembly 310. In one embodiment, the guide rail mechanism 50 includes a strip guide rail 51 and a slider 52 that is shape-fitted and slidably engaged with the corresponding strip guide rail 51. One of the strip guide rail 51 and the slider 52 is fixedly mounted on the inner wall surface of the sleeve 4, while the other is fixedly mounted on the corresponding guide arm 312, thereby guiding the linear movement of the synchronization seat assembly 310 by sliding the slider 52 along the strip guide rail 51. Figure 1 and Figure 4 As shown, in one specific embodiment, the strip guide 51 is fixedly installed on the inner wall surface of the sleeve 4, and the slider 52 is fixedly installed on the guide arm 312. More preferably, as shown... Figure 1As shown, each guide arm 312 is fixedly mounted with two sliders 52 spaced apart along the rotation axis L to ensure more stable linear movement of the synchronization seat assembly 310. Of course, the opposite arrangement is also possible in other embodiments. Furthermore, each guide rail mechanism 50 is configured to withstand loads in all directions, particularly eccentric loads.

[0048] The gear transmission section 32 of the centering transmission mechanism 3 includes multiple transmission gear sets 320. Each transmission gear set 320 meshes with a corresponding pawl assembly 1 and an associated synchronizing seat assembly 310 to convert linear drive action into radial drive action on the pawl assembly 1. In one specific embodiment, such as Figure 3 As shown, each transmission gear set 320 includes a first gear 321 that meshes with a corresponding guide arm 312 of the synchronizing seat assembly 310 and a second gear 322 that meshes with a corresponding pawl assembly 1. The first gear 321 and the second gear 322 mesh with each other. The end section of each guide arm 312 away from the synchronizing seat body 311 is formed into a rack section that meshes with the first gear 321 of the corresponding transmission gear set 320. This rack section is specifically located on the side of the guide arm 312 facing the axis of rotation L, thereby enabling the synchronizing seat assembly 310 and the plurality of transmission gear sets 320 to be coupled through gear and rack meshing. On the other hand, each pawl assembly 1 includes a pawl seat 10 and pawls 11 and rack portions 12 located on opposite sides of the pawl seat 10. The rack portions 12 mesh with the second gear 322 of the corresponding transmission gear set 320, thereby enabling the pawl assembly 1 to be coupled through gear and rack meshing with the corresponding transmission gear set 320. Thus, when the linear drive unit 2 drives the synchronizer assembly 310 to move linearly toward the jaw assembly 1, the rack section of the guide arm 312 drives the first gear 321 to rotate, the first gear 321 drives the second gear 322 to rotate, and the second gear 322 drives the rack portion 12 of the jaw assembly 1 to move radially outward, thereby causing the multiple jaw assemblies 1 to perform a releasing action. Conversely, when the linear drive unit 2 drives the synchronizer assembly 310 to move linearly away from the jaw assembly 1, the rack section of the guide arm 312 drives the transmission gear set 320, which in turn drives the rack portion 12 of the jaw assembly 1 to move radially inward, thereby causing the multiple jaw assemblies 1 to perform a clamping action. Furthermore, preferably, the first gear 321 is a large gear and the second gear 322 is a small gear, thereby improving the efficiency of power transmission.

[0049] The chuck mounting plate 6 has through slots at positions corresponding to the rack portions 12 of each chuck assembly 1. The second gear 322 of the transmission gear set 320 passes through the corresponding through slots and meshes with the rack portions 12 of the chuck assembly 1. Figure 3The lower half is shown. Furthermore, the jaw mounting plate 6 has a first surface facing the centering transmission mechanism 3 and a second surface opposite to the first surface, and on the second surface has a second guide structure 7 adapted to guide the jaw assembly 1 to move radially. (See below.) Figure 2 As shown, the second guide structure 7 can be a linear guide rail structure mounted on the jaw mounting plate 6. Thus, compared to existing chucks that use sliding blocks to drive the jaw assembly, the chuck 100 using the second guide structure 7 can prevent cutting dust from being squeezed and adhering to the sliding surface, thereby avoiding problems such as jaw dust accumulation and jamming. Furthermore, by using the jaw mounting plate 6 to mount the jaw assembly 1 and using the second guide structure 7 to guide the radial movement of the jaw assembly 1, the gap between the jaw seat 10 and the jaw mounting plate 6 is smaller, preventing small cutting waste from entering the chuck and causing jamming of the internal mechanism, especially preventing jamming between gears and racks.

[0050] In an optional embodiment, the chuck 100 includes a set of multiple jaw assemblies 1, and the centering transmission mechanism 3 includes a synchronizing seat assembly 310 and multiple transmission gear sets 320 that are respectively coupled to the multiple jaw assemblies 1. Thus, only one synchronizing seat assembly 310 can drive, for example, three, four, or more jaw assemblies 1, making the chuck 100 simple in structure and providing high synchronization and centering accuracy. In the example shown in the related figures, the synchronizing seat body 311 is formed as a rectangular frame. However, when using one synchronizing seat assembly 310 to drive, for example, three, four, or more jaw assemblies 1, the synchronizing seat body 311 can be correspondingly formed as a triangle, square, or even a circle, as long as it is rotationally symmetrical about the rotation axis L and suitable for coupling with the corresponding number of jaw assemblies 1.

[0051] In another alternative embodiment, the chuck 100 may include multiple sets of multiple jaw assemblies 1, and the centering transmission mechanism 3 includes multiple synchronizer assemblies 310 arranged sequentially along the rotation axis L, corresponding to the multiple sets, and multiple transmission gear sets 320 respectively coupled to the corresponding jaw assemblies 1. In this case, the linear drive unit 2 includes drive groups corresponding to the groups of jaw assemblies 1, and each drive group includes one or more drive cylinders. Thus, two sets of drive cylinders can drive two synchronizer assemblies 310 to drive the four jaw assemblies 1 of the two groups to perform radial movement, such as... Figures 1 to 4As shown, three sets of drive cylinders can be used to drive three synchronizer assemblies 310 to drive three sets of six jaw assemblies 1 to perform radial movement, or two sets of drive cylinders can be used to drive two synchronizer assemblies 310 to drive two sets of six jaw assemblies 1 to perform radial movement, so that each jaw assembly 1 can independently clamp and release, and can achieve high synchronization and centering accuracy of each jaw assembly 1. When the linear motion part 31 of the centering transmission mechanism 3 includes multiple synchronizer assemblies 310, the linear motion part 31 may also include push rods 313. The synchronizer assembly 310 closest to the linear drive unit 2 can be directly connected to the output end of the linear drive unit 2 or connected through a tool such as a floating joint, while other synchronizer assemblies 310 can be connected to the output end of the linear drive unit 2 by means of corresponding push rods 313. Similarly, the synchronizer body 311 can be formed into a suitable rotationally symmetrical shape. Furthermore, the guide arm 312 of the synchronization seat assembly 310 that is closer to the claw assembly 1 is shorter, and two sliders 52 that are correspondingly closer can still be installed on such guide arm 312.

[0052] As described above, the chuck 100 also includes a dust extraction pipe 9 extending about the rotation axis L. One end of the dust extraction pipe 9 extends to the jaw mounting plate 6 and faces the clamping station opening between the multiple jaw assemblies 1, while the other end is connected to the air distribution device, thereby enabling the discharge of processing waste or dust and further preventing the internal mechanisms from jamming due to dust accumulation.

[0053] According to another aspect of the invention, a processing apparatus, particularly a tube cutter, especially a laser tube cutter, is provided, the processing apparatus comprising at least a chuck 100 for processing apparatus according to the invention.

[0054] Although specific embodiments of the invention have been described in detail herein, they are given for illustrative purposes only and should not be construed as limiting the scope of the invention. Various substitutions, alterations, and modifications can be conceived without departing from the spirit and scope of the invention.

[0055] Reference tag list

[0056] 100 Chuck 320 Transmission Gear Set

[0057] 1. Claw assembly 321 First gear

[0058] 10. Claw mount 322, second gear

[0059] 11 Claws 4 Sleeves

[0060] 12. Rack and pinion section 5. First guide structure

[0061] 2 Linear drive unit 50 Guide rail mechanism

[0062] 3. Centering transmission mechanism 51. Strip guide rail

[0063] 31 Linear motion section 52 Slider

[0064] 310 Synchronous Connector Assembly 6 Claw Mounting Plate

[0065] 311 Synchronous base body 7 Second guide structure

[0066] 312 Guide arm 8 Spindle

[0067] 313 Push rod 9 Dust extraction pipe

[0068] 32. Gear transmission components.

Claims

1. A chuck (100) for a machining apparatus, comprising: Multiple claw components (1); A linear drive unit (2) is used to generate a linear drive action parallel to the rotation axis (L) of the chuck (100); The centering transmission mechanism (3) is configured to drive the plurality of jaw assemblies (1) radially and centered about the axis of rotation (L) by transmitting the linear drive action to each jaw assembly (1), and includes a linear motion portion (31) for transmitting the linear drive action to each jaw assembly (1). A sleeve (4) is used to cover at least a portion of the centering transmission mechanism (3) and extends parallel to the axis of rotation (L); and A first guide structure (5) is disposed between the linear motion part (31) and the sleeve (4) and guides the linear motion of the linear motion part (31) along the rotation axis (L).

2. The chuck (100) for a processing apparatus according to claim 1, wherein, All the jaw assemblies (1) of the chuck (100) are driven in the same manner by the linear drive unit (2) via the centering transmission mechanism (3).

3. The chuck (100) for a processing apparatus according to claim 1 or 2, wherein, The centering transmission mechanism (3) is arranged along the rotation axis (L) between the linear drive unit (2) and the plurality of jaw assemblies (1), and is connected at one end to the output end of the linear drive unit (2) via the linear motion part (31), while at the other end it also includes a gear transmission part (32) and is coupled to the plurality of jaw assemblies (1) via the gear transmission part (32); and / or The first guide structure (5) includes a plurality of guide rail mechanisms (50) arranged in a rotationally symmetrical manner about the axis of rotation (L), and each of the guide rail mechanisms (50) is configured to withstand loads in all directions.

4. The chuck (100) for a processing apparatus according to claim 3, wherein, The linear motion section (31) includes a synchronization seat assembly (310) associated with a plurality of claw assemblies (1), and the first guide structure (5) is configured to guide the linear motion of the synchronization seat assembly (310), and The gear transmission part (32) includes a plurality of transmission gear sets (320), each of the transmission gear sets (320) meshing with the corresponding pawl assembly (1) and the associated synchronizing seat assembly (310) to convert the linear drive action into a radial drive action on the pawl assembly (1).

5. The chuck (100) for a processing apparatus according to claim 4, wherein, The synchronizing seat assembly (310) includes a synchronizing seat body (311) and a plurality of plate-shaped guide arms (312) corresponding to the plurality of claw assemblies (1) mounted on the synchronizing seat body (311) and extending from the synchronizing seat body (311) along the rotation axis (L) toward the corresponding claw assembly (1). The end section of the guide arm (312) away from the synchronizing seat body (311) is formed as a rack section that meshes with the corresponding transmission gear set (320), and the guide rail mechanism (50) of the first guide structure (5) is disposed between the corresponding guide arm (312) and the sleeve (4).

6. The chuck (100) for a processing apparatus according to claim 5, wherein, The rack section is located on the side of the guide arm (312) facing the axis of rotation (L); and / or The guide rail mechanism (50) includes a strip guide rail (51) and a slider (52) that is shaped and slidably fitted to the corresponding strip guide rail (51). One of the strip guide rail (51) and the slider (52) is fixedly mounted on the inner wall of the sleeve (4), while the other is fixedly mounted on the corresponding guide arm (312); and / or The synchronizing seat body (311) is formed as a hollow frame, has an extension dimension along the direction of the rotation axis (L), and has a cross-sectional shape that is rotationally symmetrical about the rotation axis (L) on a section perpendicular to the rotation axis (L).

7. The chuck (100) for a processing apparatus according to claim 6, wherein, The strip guide rail (51) is fixedly installed on the inner wall of the sleeve (4), and two sliders (52) are fixedly installed on each guide arm (312) at intervals along the rotation axis (L); and / or The synchronous seat body (311) includes an end plate near the linear drive unit (2) and a side plate that extends perpendicularly to the end plate and toward the claw assembly. The side plate is circumferentially continuous and encloses a hollow space that opens toward the claw assembly. The guide arm (312) is fixedly installed on the side plate or is fixedly installed on the end plate as at least a part of the side plate.

8. The chuck (100) for a processing apparatus according to claim 7, wherein, The synchronization seat body (311) also includes multiple reinforcing ribs, which are vertically installed on the end plate within the hollow space and fixedly connected to the side plate at both ends; and / or The end plate has a through opening in the central region surrounding the axis of rotation (L).

9. The chuck (100) for a processing apparatus according to any one of claims 4 to 8, wherein, Each of the transmission gear sets (320) includes a first gear (321) meshing with the synchronizer assembly (310) and a second gear (322) meshing with a corresponding pawl assembly (1), the first gear (321) and the second gear (322) meshing with each other; and / or Each of the said jaw assembly (1) includes a jaw seat (10) and jaws (11) and rack portions (12) located on opposite sides of the jaw seat (10), the rack portions (12) meshing with the corresponding transmission gear set (320).

10. The chuck (100) for a processing apparatus according to claim 9, wherein, The first gear (321) is a large gear, and the second gear (322) is a small gear; and / or The chuck (100) further includes a jaw mounting plate (6), which has a through groove at a position corresponding to the rack portion (12) of each jaw assembly (1). The second gear (322) of the transmission gear set (320) passes through the corresponding through groove and meshes with the rack portion (12) of the corresponding jaw assembly (1).

11. The chuck (100) for a processing apparatus according to claim 10, wherein, The claw mounting plate (6) is fixedly installed at the end of the sleeve (4); and / or The claw mounting plate (6) has a first surface facing the centering transmission mechanism (3) and a second surface opposite to the first surface, and has a second guide structure (7) on the second surface adapted to guide the claw assembly (1) to move radially.

12. The chuck (100) for a processing apparatus according to any one of claims 4 to 8, 10 to 11, wherein, The chuck (100) includes a set of multiple jaw assemblies (1), and the centering transmission mechanism (3) includes a synchronizing seat assembly (310) and multiple transmission gear sets (320) that are respectively coupled to the multiple jaw assemblies (1); or The chuck (100) includes multiple sets of multiple jaw assemblies (1), and the centering transmission mechanism (3) includes multiple synchronous seat assemblies (310) arranged sequentially along the rotation axis (L) and corresponding to the multiple sets, and multiple transmission gear sets (320) that are respectively coupled to the corresponding jaw assemblies (1).

13. The chuck (100) for a processing apparatus according to claim 12, wherein, The synchronous mount assembly (310) is directly connected to the output end of the linear drive unit (2) or connected via a push rod (313); and / or The linear drive unit (2) includes drive groups corresponding to the groups of the claw assembly (1), and each drive group includes one or more drive cylinders.

14. The chuck (100) for a processing apparatus according to any one of claims 1 to 2, 4 to 8, 10 to 11 and 13, wherein, The linear drive unit (2) is mounted on the spindle (8) of the chuck (100), and the sleeve (4) is directly or indirectly mounted on the spindle (8); and / or The chuck (100) also includes a dust extraction pipe (9) extending about the axis of rotation (L). One end of the dust extraction pipe (9) extends to the jaw mounting plate (6) and faces the clamping station opening between the plurality of jaw assemblies (1), and the other end is connected to the air distribution device.

15. A processing apparatus, particularly a tube cutting machine, especially a laser tube cutting machine, comprising at least a chuck (100) for the processing apparatus according to any one of claims 1-14.

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