Clamping chuck and clamping device

Abstract

The utility model relates to the technical field of welding clamping equipment, and provides a clamping chuck and a clamping device.The clamping chuck comprises a shell, a driving disc and a clamping jaw assembly, a plurality of limiting sliding grooves are formed in the two side walls in the shell, and the multiple limiting sliding grooves are evenly distributed in the tangential direction of the same circular ring line; the driving disc is rotationally arranged in the shell, a clamping through hole is formed in the driving disc, a plurality of linear groove holes are formed in the periphery of the clamping through hole, and the linear groove holes are evenly distributed in the tangential direction of the other circular ring line; the clamping jaw assembly comprises a plurality of clamping jaw parts, each clamping jaw part is provided with a driving shaft and a sliding block, the clamping jaw parts are in sliding fit with the limiting sliding grooves and the linear groove holes, and the guide faces and the clamping faces of the adjacent clamping jaw parts are in contact and attached. According to the utility model, the plurality of clamping jaw parts, the limiting chutes and the linear slotted holes are arranged, so that a polygonal clamping hole is formed in the clamping through hole, the centering is convenient, the quick clamping is realized, and the clamping efficiency and quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding clamping equipment, in particular to a clamping chuck and a clamping device. Background Art

[0002] Semi-finished products such as regular octagonal or multi-shaped glass rods are needed in the production of optical fiber industry. In the actual production process, the polished regular octagonal or polygonal glass rods need to be connected to the handle before proceeding to the next step. This requires the glass rod to be clamped so that the handle can be welded to one end of the glass rod.

[0003] In the related art, existing clamping devices, such as three-jaw or multi-jaw chucks, are used for clamping. These chucks are prone to causing the rod to swing out of alignment during clamping. Furthermore, the clamping process is cumbersome and the clamping stability is poor. This results in varying degrees of misalignment in the handle after welding, thus affecting subsequent processes. Utility Model Content

[0004] The utility model provides a clamping chuck and a clamping device, which are used to solve the defects of poor concentricity and poor clamping stability when clamping a polygonal rod-shaped object in the prior art.

[0005] The first aspect of the present invention provides a clamping chuck, comprising: a shell, a driving disk and a claw assembly, wherein an assembly space is formed in the shell, and a plurality of limiting slide grooves are provided on at least one of the wall surfaces on both sides of the assembly space, and the plurality of limiting slide grooves are evenly arranged in the tangent direction of the same circular line; the driving disk is rotatably arranged in the assembly space, a card connection hole is provided in the middle of the driving disk, and a plurality of linear slots are provided around the driving disk outside the card connection hole, and the plurality of linear slots are evenly arranged in the tangent direction of the other circular line, and the plurality of linear slots are provided in a one-to-one correspondence with the plurality of limiting slide grooves; the claw assembly comprises a plurality of A claw portion, a plurality of the claw portions are sequentially fitted along the circumference of the card-connecting through hole, each of the claw portions is provided with a driving shaft and a sliding block, a plurality of the driving shafts are correspondingly passed through a plurality of the linear slots, the sliding block slides in cooperation with the limiting slide, and the claw portion includes a guide surface and a clamping surface arranged to intersect, and a part of the guide surface and the clamping surface is located in the card-connecting through hole; wherein, the guide surface of any one of the claw portions contacts and fits with the clamping surface of the adjacent claw portion, so that under the drive of the drive disk, the sliding block can move in the limiting slide, so that the aperture of the polygonal clamping hole formed by the plurality of clamping surfaces increases or decreases.

[0006] According to the clamping chuck provided by the utility model, the claw part includes a first claw block, a second claw block and a drive shaft, the drive disk is arranged between the first claw block and the second claw block, the drive shaft is passed through the linear slot hole, one end of the drive shaft is connected to the first claw block, and the other end of the drive shaft is connected to the second claw block.

[0007] According to the clamping chuck provided by the present invention, the claw part also includes a connecting block, the connecting block is formed with a first surface and a second surface arranged to intersect, and the connecting block is arranged between the first claw block and the second claw block so that the first surface forms the guide surface and the second surface forms the clamping surface.

[0008] According to the clamping chuck provided by the utility model, a plurality of arc-shaped rotation guide grooves are provided on the driving disk outside the linear slot hole, and the rotation guide grooves are concentric with the driving disk; a corresponding support column is provided in the assembly space, and the support column is passed through the rotation guide groove so that the driving disk rotates along the guide groove relative to the support column.

[0009] According to the clamping chuck provided by the present invention, a shaft sleeve is provided on the outer sleeve of the driving shaft, and the outer diameter of the shaft sleeve is less than or equal to the slot width of the linear slot hole.

[0010] According to the clamping chuck provided by the present invention, the shell includes a base and a cover body, one end of the support column is connected to the base, the other end of the support column is connected to the cover body, and the cover body is buckled on the base.

[0011] According to the clamping chuck provided by the present invention, the limiting sliding grooves are provided on the inner wall surfaces of the base and the shell.

[0012] According to the clamping chuck provided by the present invention, a locking component is further provided on the driving disk, and the locking component is used to limit the rotation of the driving disk.

[0013] The locking component includes a locking screw, one end of the locking screw is provided with a locking block, and a corresponding rotating bar hole is opened on the shell. The screw end of the locking screw is threadedly connected to the driving disk through the rotating bar hole. The aperture of the rotating bar hole is smaller than the diameter of the locking block. The locking block can abut against the outer wall surface of the shell to limit the rotation of the driving disk.

[0014] The second aspect of the present invention provides a clamping device, comprising: a supporting base, a first chuck support, a second chuck support, a welding support and a driving device; the first chuck support is slidably arranged on the supporting base, and the first chuck support is rotatably provided with a first main shaft; the second chuck support is slidably arranged on the supporting base and is arranged opposite to the first chuck support, and the second chuck support is rotatably provided with a second main shaft; the welding support is slidably arranged on the supporting base and is located between the first chuck support and the second chuck support, and a welding component is provided on the welding support; the first main shaft and the second main shaft are transmission-connected to the driving device, and the driving device is used to drive the first main shaft and the second main shaft to rotate; wherein, one end of the first main shaft and one end of the second main shaft are provided with a clamping chuck as described in any one of the above.

[0015] The utility model provides a clamping chuck, which forms a polygonal clamping hole in the clamping hole through the arrangement of multiple claws, limiting slide grooves and straight slots. This method can facilitate centering, achieve rapid clamping, and improve the efficiency and quality of clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a three-dimensional schematic diagram of the clamping chuck provided by the utility model for clamping a workpiece.

[0018] Figure 2 It is a schematic diagram of the exploded structure of the clamping chuck provided by the utility model.

[0019] Figure 3 It is a structural schematic diagram of the assembly of the clamping chuck and the clamping claw assembly provided by the utility model.

[0020] Figure 4 This is one of the structural schematic diagrams of the clamping claw portion in the clamping chuck provided by the utility model.

[0021] Figure 5 This is the second structural schematic diagram of the clamping claw portion in the clamping chuck provided by the utility model.

[0022] Figure 6 It is a schematic diagram of the process of clamping by rotating the clamping chuck provided by the utility model.

[0023] Figure 7It is a three-dimensional schematic diagram of the clamping device provided by the utility model.

[0024] Figure 8 This is a top view of the structure of the clamping device provided by the utility model.

[0025] Reference numerals:

[0026] 10. Housing; 11. Cover; 111. Rotating bar hole; 12. Base; 121. Limiting slide; 122. Support column; 20. Drive plate; 21. Connecting hole; 22. Linear slot; 23. Rotating guide groove; 30. Claw assembly; 31. Claw portion; 311. First claw block; 312. Second claw block; 313. Drive shaft; 314. Connecting block; 315. Sliding block; 316. Guide Surface; 317, clamping surface; 32, clamping hole; 40, locking component; 41, locking screw; 42, locking block; 50, polygonal workpiece; 60, supporting base; 70, first chuck support; 80, second chuck support; 90, driving device; 100, welding support; 101, welding component; 102, heat insulation baffle; 110, rotating rod; 120, handle; 130, rack; 140, rotating sleeve. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the purpose of facilitating the explanation of the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0029] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0030] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0032] When processing a regular polygonal rod-shaped object, for example, when welding is required, the rod-shaped object needs to be clamped on a clamping device to facilitate the welding operation.

[0033] In related technologies, clamping devices typically use three-jaw chucks for clamping. While three-jaw chucks offer excellent clamping performance for cylindrical parts, they have difficulty centering deformed cylindrical workpieces and exhibit poor clamping performance. Other existing technologies employ multi-jaw chucks for clamping. However, these chucks require constant adjustment of the workpiece to achieve a good clamping effect, making them cumbersome and impacting processing efficiency.

[0034] Regarding the problems in related technologies, such as Figure 1-Figure 3As shown, the present embodiment provides a clamping chuck, comprising a shell 10, a driving disk 20 and a claw assembly 30, an assembly space is formed in the shell 10, and a plurality of limiting slide grooves 121 are provided on at least one of the two side walls of the assembly space, and the plurality of limiting slide grooves 121 are evenly arranged in the tangential direction of the same circular line a; the driving disk 20 is rotatably arranged in the assembly space, a card connection hole 21 is provided in the middle of the driving disk 20, and a plurality of linear slots 22 are provided around the driving disk 20 outside the card connection hole 21, and the plurality of linear slots 22 are evenly arranged in the tangential direction of another circular line b, and the plurality of linear slots 22 are arranged one-to-one with the plurality of limiting slide grooves 121; the claw assembly 30 includes a plurality of claw portions 31, and the plurality of claw portions 31 are arranged along the The circumference of the card connection hole 21 is arranged in sequence, and each claw portion 31 is provided with a drive shaft 313 and a sliding block 315. Multiple drive shafts 313 are correspondingly arranged in multiple straight slots 22, and the sliding block 315 slides with the limiting slide 121. The claw portion 31 includes a guide surface 316 and a clamping surface 317 that are intersectingly arranged, and a part of the guide surface 316 and the clamping surface 317 is located in the card connection hole 21; wherein, the guide surface 316 of any claw portion 31 is in contact with and fits with the clamping surface 317 of the adjacent claw portion 31, so that under the drive of the drive disk 20, the sliding block 315 of the claw portion 31 can move in the limiting slide 121, so that the aperture of the polygonal clamping hole 32 formed by the multiple clamping surfaces 317 increases or decreases. When clamping the polygonal workpiece 50, it is necessary to ensure the stability and quality of the clamping. In this embodiment, the clamping holes 32 are formed by the clamping surfaces 317 on the multiple claw parts 31, so that each side of the polygonal workpiece 50 is clamped in contact with the clamping surface 317, thereby improving the stability of the clamping. The driving disk 20 can drive the multiple claw parts 31 to be controlled in linkage, thereby improving the concentricity of the clamping and achieving high-quality clamping.

[0035] Specifically, a driving shaft 313 is provided on the claw portion 31, and the driving shaft 313 is provided in the linear slot 22. When the driving disk 20 rotates, it can apply a force to the driving shaft 313, so that the main body of the claw portion 31 can slide along the limiting slide groove 121. Since the clamping surfaces 317 between multiple adjacent claw portions 31 are fitted to form a polygonal clamping hole 32, the aperture of the clamping hole 32 can be increased or decreased while the main body of the claw portion 31 slides in the limiting slide groove 121, thereby achieving clamping of the polygonal workpiece 50.

[0036] It is understandable that by forming an annular claw assembly 30 structure through the plurality of claw portions 31 arranged circumferentially in the clamping hole 21, adjacent claw portions 31 can achieve the expansion and contraction of the clamping hole 32 during movement. In this embodiment, each side of the diagonal clamping hole 32 is constructed by the clamping surface 317 on the claw portion 31. When the drive disk 20 rotates, it can drive the claw portion 31 to move along the direction of its respective guide surface 316, so that the aperture of the clamping hole 32 can be expanded or reduced with respect to the center position of the drive disk 20. This can ensure stable concentricity when clamping the polygonal workpiece 50, thereby achieving stable clamping. And because each claw portion 31 has a clamping surface 317, when clamping the polygonal workpiece 50, each side can be clamped in contact with the clamping surface 317, thereby increasing the contact area between the claw portion 31 and the workpiece and improving the stability of the clamping.

[0037] Further, if Figure 4 、 Figure 5 As shown, the claw portion 31 is a triangular block structure as a whole, and the sliding block 315 on the claw portion 31 is a long strip block structure, which is located on the other side line of the claw portion away from the guide surface 316 and the clamping surface 317.

[0038] For example, for an octagonal columnar polygonal workpiece 50, eight limiting grooves 121 are provided on at least one of the left inner wall of the housing 10 and the right inner wall of the housing 10, and eight linear slots 22 are provided on the drive disk 20. The eight linear slots 22 are evenly arranged along the tangent direction of another circular line b. The eight linear slots 22 correspond one-to-one with the eight limiting grooves 121, and the diameters of the same circular line a and the other circular line b are consistent. Similarly, there are eight claw portions 31, each of which can be matched with the linear slots 22. The sliding block 315 on each claw portion 31 is slidably matched with each limiting groove 121. Under external force, the drive disk 20 rotates and can apply force to the drive shaft 313, thereby driving the claw portion 31 to move along the limiting groove 121 and achieve the gradual expansion or contraction of the clamping hole 32.

[0039] Specifically, if Figure 6As shown, under the action of external force, the driving disk 20 can rotate counterclockwise, and at the same time can drive the claw portion 31 to slide along the limiting slide groove 121 (slide from the proximal position of the limiting slide groove 121 to the distal position), so that the closed clamping hole 32 gradually opens. When it rotates to a certain position, it stops rotating, and the workpiece is placed in the clamping hole 32. Then the driving disk 20 is rotated clockwise. At this time, the driving claw portion 31 is driven to slide from the distal position of the limiting slide groove 121 to the proximal position, so that the expanded clamping hole 32 gradually shrinks, and finally the clamping surfaces 317 on each claw portion 31 are fitted one by one with each surface of the workpiece, thereby realizing clamping of the workpiece. The entire clamping process can achieve automatic centering, and can make each surface of the workpiece fit and clamp with the clamping surface 317, thereby realizing stable clamping.

[0040] In a specific configuration, the guide surface 316 and the clamping surface 317 of the claw portion 31 intersect to form a triangular structure, which enables the multiple claw portions 31 to fit together to form a complete closed circle when the clamping hole 32 is closed, thereby blocking the entire clamping hole 21. After the drive disk 20 rotates, the multiple claw portions 31 gradually slide along the limiting slide groove 121, thereby gradually exposing the clamping surfaces 317 of adjacent claw portions 31 and gradually expanding outward with the clamping hole 21 as the center, thereby increasing the aperture of the clamping hole 32. Similarly, when stable clamping is required, the drive disk 20 is rotated in the opposite direction to cause the multiple claw portions 31 to gradually contract inward with the clamping hole 21 as the center, thereby reducing the aperture of the clamping hole 32.

[0041] The drive disk 20 can be driven manually or automatically by a drive motor or other component. For example, after being manually rotated to a specific position, the workpiece is loaded into the clamping hole 32. The drive disk 20 is then held in the predetermined position by force or other components, thereby clamping the workpiece. When a drive component such as a drive motor is used for the driving operation, the specific position can be maintained by starting and locking the motor.

[0042] In some embodiments, the clamping portion 31 includes a first clamping block 311 and a second clamping block 312. The drive disk 20 is disposed between the first clamping block 311 and the second clamping block 312. One end of the drive shaft 313 is connected to the first clamping block 311, and the other end of the drive shaft 313 is connected to the second clamping block 312. When clamping a workpiece, clamping stability is one of the key indicators of clamping quality. In this embodiment, by providing the first clamping block 311 and the second clamping block 312 on either side of the drive disk 20, and connecting the clamping blocks on both sides via the drive shaft 313, the overall clamping stability is improved.

[0043] It can be understood that after the two jaw blocks are connected, a jaw portion 31 is formed as a whole, which increases the contact area with each surface of the workpiece, thereby improving the stability of clamping.

[0044] Specifically, the first claw block 311 and the second claw block 312 have the same shape structure, and the space between the first claw block 311 and the second claw block 312 forms an overall frame of the claw portion 31, and a part of the overall frame is located in the clamping hole 21, so that when the driving disk 20 is rotated, the clamping hole 21 can be opened or closed, thereby enabling the polygonal workpiece 50 to be clamped.

[0045] In the specific setting, the first claw block 311 and the second claw block 312 are formed as a whole into a roughly triangular block structure, and a sliding block 315 is provided on the side opposite to the first claw block 311 and the second claw block 312, and the sliding block 315 can slide in the limiting slide groove 121.

[0046] In some embodiments, the clamping jaw portion 31 further includes a connecting block 314 having a first surface and a second surface intersecting each other. The connecting block 314 is disposed between the first clamping jaw block 311 and the second clamping jaw block 312, such that the first surface forms the guide surface 316 and the second surface forms the clamping surface 317. The provision of the connecting block 314 can further enhance the stability of the clamping, resulting in a better clamping effect.

[0047] Specifically, the connecting block 314 is a triangular block structure with a certain thickness. The first and second surfaces of the connecting block 314 are two intersecting surfaces. The first surface is flush with the guide surface 316, and the second surface is flush with the clamping surface 317. Thus, the first surface forms the guide surface 316, and the second surface forms the clamping surface 317. In a specific application, the length of the second surface is longer than the length of the first surface, so that the clamping hole 32 has a stable contact surface.

[0048] It is understood that the first jaw block 311 and the second jaw block 312 have a certain thickness and form a guide surface 316 and a clamping surface 317. The thickness of the connecting block 314 is greater than the thickness of the two jaw blocks, so that the first surface is flush with one side of the two jaw blocks and together form the guide surface 316. Similarly, the second surface is flush with the other side of the two jaw blocks and together form the clamping surface 317. This arrangement can not only increase the structural strength of the jaw portion 31, but also increase the contact area with the workpiece during clamping, thereby providing greater stability in the clamping.

[0049] Specifically, the connecting block 314 has one side and another side that are positioned opposite each other. One side of the connecting block 314 is connected to the first claw block 311, and the other side of the connecting block 314 is connected to the second claw block 312. The drive shaft 313 is connected between the first claw block 311 and the second claw block 312 and is located on one side of the connecting block 314. When engaged with the drive disk 20, the drive shaft 313 is positioned within the linear slot 22, with one end of the connecting block 314 positioned within the engaging hole 21. The multiple engaging claw portions 31 are positioned within the engaging hole 21, enabling the engaging hole 21 to be closed and opened. As can be seen from the foregoing, by rotating the drive disk 20 in different directions, the multiple claw portions 31 can be driven to operate in a coordinated manner, thereby forming a polygonal clamping hole 32, thereby clamping a workpiece.

[0050] Specifically, the drive disc 20 is provided with a plurality of arc-shaped rotation guide grooves 23 outside the linear slot 22. The rotation guide grooves 23 are concentric with the drive disc 20 and correspondingly provided with support posts 122 within the assembly space. The support posts 122 extend through the rotation guide grooves 23 to allow the drive disc 20 to rotate along the guide grooves relative to the support posts 122. The drive disc 20, when installed within the assembly space, requires support points for support and rotation. In this embodiment, the rotation guide grooves 23 enable the drive disc 20 to rotate along the rotation guide grooves 23, while the support posts 122 provide support for the drive disc 20.

[0051] Specifically, the engaging hole 21 is concentrically arranged with the drive disk 20, the circular line tangent to the plurality of linear slots 22 is concentrically arranged with the drive disk 20, and the guide groove is also concentrically arranged with the drive disk 20. This allows the claw portion 31 to expand or contract the clamping hole 32 relative to the center of the drive disk 20 when the drive disk 20 rotates, ensuring the concentricity of the clamped workpiece.

[0052] During the specific setting, the driving disk 20 is arranged as a whole in the assembly space through the support column 122, and through the cooperation between the claw part 31 on the claw assembly 30 and the limiting slide groove 121, the driving disk 20 is rotated in a relatively fixed position space in the assembly space, avoiding the driving disk 20 from shaking left and right to a large extent.

[0053] In some embodiments, the housing 10 includes a base 12 and a cover 11. One end of a support column 122 is connected to the base 12, and the other end of the support column 122 is connected to the cover 11. The cover 11 is snap-fitted to the base 12. The housing 10 adopts a split connection to facilitate overall assembly, reduce assembly difficulty, improve assembly convenience, and facilitate later maintenance within the assembly space.

[0054] In the specific setting, one end of the support column 122 is fixedly connected to the base 12, and the other end of the support column is provided with an external thread end, which passes through the cover body 11 and is located outside the cover body 11, so that the cover body 11 is buckled on the base 12 and forms an assembly space.

[0055] Specifically, a through hole is provided on the shell 10, and the external threaded end of the support column 122 passes through the through hole, and the cover body 11 and the base 12 are fastened together by tightening the nut, and an assembly space is formed between the cover body 11 and the base 12.

[0056] like Figure 2 As described above, one of the left and right side walls of the assembly space is the inner wall surface of the base 12 located in the assembly space, and the other side wall surface of the assembly space is the inner wall surface of the shell 10 located in the assembly space and parallel to the base 12. In some embodiments, a plurality of limiting slide grooves 121 are provided on both side walls of the assembly space, and the limiting slide grooves 121 on the left and right side walls are arranged in a one-to-one correspondence. Correspondingly, a sliding block 315 is provided on the first claw block 311 and the second claw block 312 of the claw portion 31, so that after the claw portion 31 is installed in the assembly space, the sliding block 315 on each corresponding side cooperates with the limiting slide groove 121 to slide. This method can make the connection of the claw portion 31 more stable, make the expansion and contraction of the clamping hole more stable, and improve the stability of the clamping.

[0057] In a specific embodiment, three rotation guide grooves 23 are provided on the outer periphery of the driving disk 20, and three support columns 122 are provided between the cover body 11 and the base 12. The three support columns 122 are correspondingly inserted into the rotation guide grooves 23, so that the driving disk 20 can rotate around the support columns 122 when it is rotated.

[0058] In some embodiments, a sleeve is provided on the outer surface of the drive shaft 313, and the outer diameter of the sleeve is less than or equal to the width of the linear slot 22. The provision of the sleeve can make the drive disk 20 rotate more smoothly and can improve the service life of the clamping chuck.

[0059] It is understood that a portion of the drive shaft 313 is located within the linear slot 22. As the drive disk 20 rotates, a force is continuously applied to the drive shaft 313. Under this force, the claw portion 31 can slide along the limiting groove 121, thereby changing the diameter of the clamping hole 32. The provision of the bushing prevents direct contact between the drive disk 20 and the drive shaft 313 during rotation, thereby extending the service life of the drive shaft 313.

[0060] According to the embodiment provided by the present invention, a locking component 40 is further provided on the driving disk 20, and the locking component 40 is used to limit the rotation of the driving disk 20. The locking component 40 is used to limit the rotation of the driving disk 20, so that the driving disk 20 can be maintained in a specific position to achieve stable clamping.

[0061] It is understood that after the drive disc 20 rotates to the clamping position, its claw portion 31 is used to clamp the workpiece, and at this time, it is necessary to prevent the drive disc 20 from rotating. The locking member 40 can be provided to achieve locking, thereby preventing the drive disc 20 from rotating during the clamping process.

[0062] Specifically, the locking member 40 can be an existing locking pin or locking clamping device, which can lock the drive disk 20 to prevent the drive disk 20 from rotating when needed. For example, a locking hole can be provided on the drive disk 20, and the locking pin can be inserted into the locking hole and the locking pin can be positioned with the housing 10 or other devices to prevent the drive disk 20 from rotating.

[0063] In some embodiments, the locking component 40 includes a locking screw having a locking block 42 at one end thereof, corresponding to a rotation bar hole 111 formed in the housing 10. The screw end of the locking screw is threadedly connected to the drive disk 20 via the rotation bar hole 111. The diameter of the rotation bar hole 111 is smaller than the diameter of the locking block 42. The locking block 42 can abut against the outer wall of the housing 10 to restrict the rotation of the drive disk 20. The interaction between the locking block 42 on the locking screw and the housing 10 can conveniently lock the drive disk 20, preventing the drive disk 20 from rotating again after being locked, thereby improving the locking effect.

[0064] Specifically, if Figure 1 、 Figure 2 As shown, a rotating bar hole 111 is opened along the circumferential side wall of the cover body 11, and the rotating bar hole 111 is opposite to the driving disk 20. A threaded hole is provided on the circumferential side wall of the driving disk 20, and the screw end of the locking screw is threadedly matched with the threaded hole.

[0065] When the drive disk 20 needs to be rotated, loosen the locking block 42 on the locking screw, then hold the locking block 42 and rotate the drive disk 20 counterclockwise or clockwise. After rotating to the predetermined position, rotate the locking screw until the bottom surface of the locking block avoids contact with the outside of the shell 10. At this time, the drive disk 20 is difficult to rotate, and the preset position is stably maintained.

[0066] like Figure 7 、 Figure 8As shown, the second aspect of the present invention provides a clamping device, including a support base 60, a first chuck support 70, a second chuck support 80, a welding support 100 and a driving device 90; the first chuck support 70 is slidably arranged on the support base 60, and the first chuck support 70 is rotatably provided with a first main shaft; the second chuck support 80 is slidably arranged on the support base 60, and is arranged opposite to the first chuck support 70, and the second chuck support 80 is rotatably provided with a second main shaft; the welding support 100 is arranged between the first chuck support 70 and the second chuck support 80, and a welding gun is provided on the welding support 100; the first main shaft and the second main shaft are transmission-connected to the driving device 90, and the driving device 90 is used to drive the first main shaft and the second main shaft to rotate; wherein, one end of the first main shaft and one end of the second main shaft are provided with a clamping chuck provided in any one of the above items. By arranging clamping chucks on both chuck supports, the polygonal workpiece 50 and the handle 120 can be clamped simultaneously. After clamping, the two can be welded together by the welding component 101 on the welding support 100, thereby improving the working efficiency and realizing efficient welding operation.

[0067] Specifically, the support base 60 includes a support frame and a working platform. Slide rails are provided on both sides of the working platform. The first chuck support 70, the second chuck support 80 and the welding support 100 are all slidably connected to the slide rails. A rack 130 parallel to the slide rails is provided between the slide rails. Hand wheels and rotating shafts are provided on the first chuck support 70, the second chuck support 80 and the welding support 100 respectively. A gear is provided on the rotating shaft, and the gear is engaged with the rack 130 so that when the respective hand wheels are rotated, they can slide on the slide rails.

[0068] Furthermore, the welding component 101 includes a welding torch, which utilizes a combustible gas (such as acetylene or hydrogen) and a combustion-supporting gas (such as an oxygen lamp) flame to weld and segment the workpieces using the flame's heat. A heat shield 102 is also provided on the welding support 100. This shield is located in front of the welding torch to block the heat from the flame.

[0069] In the specific configuration, the first and second spindles are connected to the bases 12 in their respective clamping chucks. A bearing is provided on the first chuck support 70, to which the first spindle is connected. A bearing is also provided on the second chuck support 80, to which the second spindle is connected. The first and second spindles are connected to the rotating sleeve 140 via a belt, and the rotating sleeve 140 is splined to the rotating rod 110. That is, the rotating sleeve 140 has a spline groove, so that the spline groove cooperates with the rotating rod 110. One end of the driving device 90 is connected to the rotating rod 110, so that driving the rotating rod 110 can drive the rotating sleeve 140 to rotate, thereby transmitting torque to the spindles via the belt, thereby achieving rotation of the first and second spindles, which is beneficial to improving welding quality.

[0070] It is understandable that the spline-fitting connection of the rotating sleeve 140 enables the rotating sleeve 140 to slide along the rotating rod 110 , thereby being synchronized with the movement of the first chuck support 70 and the second chuck support 80 .

[0071] In this embodiment, the specific structure of the clamping device should not be limited. As long as the clamping device is provided with the above-mentioned clamping chuck, it should fall within the scope of the description of this embodiment; the clamping device should have all the beneficial effects of the above-mentioned clamping chuck, and will not be described one by one here.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A clamping chuck, characterized in that: include: A housing, wherein an assembly space is formed in the housing, and a plurality of limiting sliding grooves are formed on at least one of the two side walls of the assembly space, wherein the plurality of limiting sliding grooves are evenly arranged in the tangent direction of the same circular line; A driving disk, the driving disk being rotatably disposed in the assembly space, a latching through hole being provided in the middle of the driving disk, a plurality of linear slots being provided around the driving disk outside the latching through hole, the plurality of linear slots being evenly arranged in a tangential direction of another circular line, and the plurality of linear slots being provided in one-to-one correspondence with the plurality of limiting sliding grooves; A claw assembly, wherein the claw assembly includes a plurality of claw portions, wherein the plurality of claw portions are sequentially arranged along the circumference of the clamping through hole, each of the claw portions is provided with a drive shaft and a sliding block, wherein the plurality of drive shafts are correspondingly passed through the plurality of linear slots, the sliding block is slidably engaged with the limiting slide groove, and the claw portion includes a guide surface and a clamping surface arranged to intersect, and a portion of the guide surface and the clamping surface is located within the clamping through hole; In which, the guide surface of any one of the claw parts contacts and fits with the clamping surface of the adjacent claw part, so that under the drive of the driving disk, the sliding block can move in the limiting sliding groove, so that the aperture of the polygonal clamping hole formed by multiple clamping surfaces increases or decreases.

2. The clamping chuck according to claim 1, characterized in that The claw portion includes a first claw block and a second claw block, the drive disk is arranged between the first claw block and the second claw block, one end of the drive shaft is connected to the first claw block, and the other end of the drive shaft is connected to the second claw block.

3. The clamping chuck according to claim 2, characterized in that: The clamping claw portion further includes a connecting block having a first surface and a second surface intersecting with each other. The connecting block is arranged between the first clamping claw block and the second clamping claw block so that the first surface forms the guide surface and the second surface forms the clamping surface.

4. The clamping chuck according to claim 1, wherein: A plurality of arc-shaped rotation guide grooves are provided on the driving disk outside the linear slot, and the rotation guide grooves are concentric with the driving disk; A support column is correspondingly provided in the assembly space, and the support column is passed through the rotation guide groove, so that the driving disk rotates relative to the support column along the guide groove.

5. The clamping chuck according to claim 4, characterized in that The outer sleeve of the driving shaft is provided with a shaft sleeve, and the outer diameter of the shaft sleeve is less than or equal to the slot width of the linear slot.

6. The clamping chuck according to claim 4, characterized in that The shell includes a base and a cover. One end of the support column is connected to the base, and the other end of the support column is connected to the cover. The cover is buckled on the base.

7. The clamping chuck according to claim 6, characterized in that The limiting sliding grooves are provided on the inner wall surfaces of the base and the shell.

8. The clamping chuck according to claim 1, wherein: The driving disc is further provided with a locking component, and the locking component is used to limit the rotation of the driving disc.

9. The clamping chuck according to claim 8, characterized in that The locking component includes a locking screw, one end of the locking screw is provided with a locking block, and a corresponding rotating bar hole is opened on the shell. The screw end of the locking screw is threadedly connected to the driving disk through the rotating bar hole. The aperture of the rotating bar hole is smaller than the diameter of the locking block. The locking block can abut against the outer wall surface of the shell to limit the rotation of the driving disk.

10. A clamping device, characterized in that: Includes: Support base; a first chuck support, the first chuck support being slidably disposed on the support base, and a first spindle being rotatably disposed on the first chuck support; a second chuck support, the second chuck support being slidably disposed on the support base and being arranged opposite to the first chuck support, and a second main shaft being rotatably disposed on the second chuck support; a welding support, the welding support being slidably disposed on the support base and being located between the first chuck support and the second chuck support, the welding support being provided with a welding component; a driving device, the first main shaft and the second main shaft being in transmission connection with the driving device, the driving device being used to drive the first main shaft and the second main shaft to rotate; Wherein, one end of the first spindle and one end of the second spindle are both provided with a clamping chuck as described in any one of claims 1 to 9.

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