Electric Laser Pipe Cutting Chuck

Abstract

The present invention provides an electric laser pipe cutting chuck, which includes a frame, jaws divided into two in the left-right and up-down directions, a front cover provided with four chutes, a rotary drive mechanism fixedly arranged on the frame for driving the front cover and the jaws to rotate, a clamping drive mechanism serving as the clamping power source of the jaws, a left-right jaw transmission assembly and an up-down jaw transmission assembly for transmitting power between the clamping drive mechanism and the two groups of jaws; the clamping drive mechanism includes a clamping drive motor having a transmission shaft, a coupling fixedly connected to the transmission shaft, a lead screw in transmission connection with the coupling and capable of moving back and forth, and a lead screw nut in movable fit with the lead screw; the lead screw and the lead screw nut are correspondingly in transmission connection with the left-right and up-down jaw transmission assemblies. The present invention solves the technical problem in the industry of manufacturing tail chucks by using a motor as the clamping power; and compared with the existing pneumatic tail chucks, its structure is relatively simple, the manufacturing cost is lower, the clamping actions of the two groups of jaws are easier to control, the synchronous accuracy is higher, and the working reliability is better.

Description

Technical Field

[0001] The present invention relates to the technical field of laser pipe cutting clamping tools, and particularly relates to an electric laser pipe cutting chuck. Background Art

[0002] When a chuck is used on a laser cutting machine production line, usually two chucks are used in cooperation. According to the front and back positions set on the production line, the two cooperating chucks are respectively called the front chuck and the tail chuck in the industry. The front chuck and the tail chuck have obvious differences in structure. During the processing process, the workpiece to be processed is clamped by the tail chuck and the front chuck together from the front and back. During the processing process, the tail chuck gradually approaches the front chuck. To save the material of the workpiece to be processed or for the processing needs of the workpiece itself, the front end of the tail chuck at the processing end needs to penetrate into the central hole of the front chuck to perform cutting processing on the end of the workpiece to be processed. Whether it is the front chuck or the tail chuck of the laser pipe cutting chuck, generally a cylinder is used as the clamping power source of the clamping jaw, and a chuck with a motor as the power generally appears as the front chuck. For example, the electric chuck for a laser pipe cutting machine disclosed in the Chinese patent document with the authorization publication number CN203664727U, and the front chuck structure of an electric adjustment chuck pipe cutting device disclosed in the Chinese patent document with the authorization publication number CN210359327U. These two chucks are both powered by a motor and use a belt as the motor power output component. These two chucks are both front chucks. Due to their large body structures, they cannot be used as the tail chuck that cooperates with the front chuck. Currently, the tail chuck in common laser pipe cutting chucks generally uses a cylinder as the clamping power source of the clamping jaw, and it is rare to see a tail chuck that uses a motor as the clamping power source of the clamping jaw. For the currently common pneumatic tail chuck, the cylinder used as the power source is usually placed inside the chuck body. The built-in cylinder generally needs to be customized or self-made, with a high cost. At the same time, the built-in cylinder needs to be equipped with a very complex air distribution device inside the chuck body to ensure that the chuck can still supply air to the cylinder when rotating. Therefore, how to use a motor as the clamping power source of the clamping jaw to manufacture a suitable laser pipe cutting chuck as the tail chuck is a technical problem that the industry urgently needs to solve. Summary of the Invention

[0003] The purpose of the present invention is to provide an electric laser pipe cutting chuck that is used as a tail chuck during use to solve the problems existing in the prior art.

[0004] The technical solution of the present invention is as follows: The electric laser pipe cutting chuck of the present invention includes a frame, two clamping jaws respectively arranged in the left-right direction and the up-down direction, a front cover arranged at the rear end of the above-mentioned clamping jaws and provided with two chutes respectively in the left-right direction and the up-down direction, and a rotary drive mechanism fixedly arranged on the above-mentioned frame for driving the above-mentioned front cover and the clamping jaws to rotate. Its structural feature is that: it further includes a clamping drive mechanism as the power source for the above-mentioned clamping jaws to perform clamping and loosening actions, and left-right clamping jaw transmission components and up-down clamping jaw transmission components for realizing the power transmission of the above-mentioned clamping drive mechanism to respectively perform clamping and loosening actions with the two left-right clamping jaws and the two up-down clamping jaws; the above-mentioned clamping drive mechanism includes a clamping drive motor with a transmission shaft, a coupling fixedly connected to the transmission shaft, a lead screw whose rear end is in transmission connection with the coupling and can move back and forth relying on the coupling, and a lead screw nut in dynamic cooperation with the lead screw; the above-mentioned clamping drive mechanism is respectively in transmission connection with the left-right clamping jaw transmission components and the up-down clamping jaw transmission components by its lead screw and lead screw nut.

[0005] A further solution is: The above-mentioned left-right clamping jaw transmission component includes a support connection seat, two second angular contact ball bearings fixedly sleeved on the support connection seat and arranged adjacent to each other front and back, a first push block fixedly sleeved on the outer ends of the two second angular contact ball bearings, a first outer ring pressing cover sleeved on the rear end face of the outer ring of the second angular contact ball bearing located at the rear side and fixedly connected to the first push block, a first slider slidably arranged in each of the two left-right chutes of the above-mentioned front cover, and two first levers whose front ends are respectively in transmission connection with a first slider and whose rear ends are both in transmission connection with the first push block; the above-mentioned two left-right clamping jaws are respectively fixedly arranged on the two first sliders; the front end of the lead screw of the above-mentioned clamping drive mechanism is fixedly connected to the support connection seat.

[0006] A further solution is: The above-mentioned up-down clamping jaw transmission component includes an installation sleeve, two third angular contact ball bearings whose inner rings are respectively fixedly sleeved on the front outer periphery of the installation sleeve and arranged adjacent to each other front and back, a second push block fixedly sleeved on the outer ends of the two third angular contact ball bearings, a second outer ring pressing cover sleeved on the rear end face of the outer ring of the third angular contact ball bearing located at the rear side and fixedly connected to the second push block, a second slider slidably arranged in each of the two up-down chutes of the front cover, and two second levers whose front ends are respectively in transmission connection with a second slider and whose rear ends are both in transmission connection with the second push block; the above-mentioned two up-down clamping jaws are respectively fixedly arranged on the two second sliders; the lead screw nut of the above-mentioned clamping drive mechanism is fixedly arranged on the front side inside the installation sleeve, and the lead screw passes through the installation sleeve and extends to the front and rear sides of the installation sleeve.

[0007] A further solution is: the above-mentioned left and right clamping jaw transmission assembly also includes an inner ring clamping cover fixedly connected to the above-mentioned supporting connecting seat for locking the inner ring of the second angular contact ball bearing located on the rear side, and the above-mentioned up and down clamping jaw transmission assembly also includes an inner ring clamping nut arranged on the above-mentioned mounting sleeve for clamping the inner ring of the third angular contact ball bearing located on the rear side.

[0008] A further solution is: the above-mentioned frame includes a base, a front plate fixedly arranged on the upper front side of the above-mentioned base, a left plate and a right plate fixedly arranged on the upper side of the base and oppositely arranged on the left and right sides of the rear side of the front plate and both integrally or fixedly connected with the front plate, a rotating drive mounting plate integrally or fixedly arranged on the front side of the base and the front plate, and a mounting spindle fixedly arranged on the front plate after passing through the middle holes provided on the rotating drive mounting plate respectively; a forward and backward mounting through hole is provided in the middle of the front plate, and a forward and backward through hole is provided along the axis of the mounting spindle; the rear part of the mounting sleeve of the above-mentioned up and down clamping jaw transmission assembly can be movably inserted into the through hole of the above-mentioned mounting spindle, and the lead screw of the above-mentioned clamping drive mechanism passes through the through hole of the mounting spindle in the forward and backward directions.

[0009] A further solution is: the above-mentioned rotation drive mechanism includes a rotation drive motor fixedly mounted on the rotation drive mounting plate of the above-mentioned frame, a driving gear transmission-connected to the above-mentioned rotation drive motor, a driven gear meshing with the above-mentioned driving gear, two first angular contact ball bearings rotatably mounted on the mounting main shaft of the frame, front and rear, a first connecting sleeve whose inner side is transmission-fixedly connected to the outer rings of the two first angular contact ball bearings and whose rear end is integrally or fixedly connected to the driven gear, and a second connecting sleeve whose front and rear ends are respectively fixedly connected to the above-mentioned front cover and the front end of the first connecting sleeve; the second push block of the above-mentioned up and down clamping jaw transmission assembly is airtightly and movably arranged on the inner side of the second connecting sleeve, and the first push block of the left and right clamping jaw transmission assembly is airtightly and movably arranged on the inner side of the second push block of the up and down clamping jaw transmission assembly.

[0010] A further solution is that the above-mentioned rotary drive mechanism also includes an inner ring locking nut which cooperates with the front end of the mounting spindle of the above-mentioned frame and is used to lock the inner ring of the first angular contact ball bearing located on the front side.

[0011] A further solution is that the above-mentioned rotary drive mechanism also includes a gear dust cover fixedly arranged on the rotary drive mounting plate of the above-mentioned frame and covering the driving gear and the driven gear.

[0012] A further solution is as follows: A front-to-back central ventilation hole is provided along the axis of the above-mentioned lead screw. An air inlet ring is provided on the lead screw and is in ventilation connection with the central ventilation hole of the lead screw. A dust blowing air inlet nozzle is provided on the air inlet ring. An air outlet nozzle accommodating hole is provided in the middle of the front cover; an air outlet channel in ventilation connection with the front end of the central ventilation hole of the lead screw is provided in the first pushing block of the left-right clamping jaw transmission assembly. An air outlet nozzle extending forward into the air outlet nozzle accommodating hole of the front cover is fixedly provided in the air outlet channel of the first pushing block; thus, a dust blowing gas channel is jointly formed by the dust blowing air inlet nozzle and the air inlet ring arranged in sequence from back to front, the central ventilation hole of the lead screw, the air outlet channel of the first pushing block of the left-right clamping jaw transmission assembly, and the air outlet nozzle.

[0013] A further solution is as follows: The above-mentioned electric laser pipe cutting chuck further includes a clamping part limit cover fixedly provided at the front end of the above-mentioned front cover through a configured limit cover connecting rod. The two left-right clamping jaws and the two up-down clamping jaws can all extend forward movably from the above-mentioned clamping part limit cover.

[0014] The present invention has positive effects: Through the design of the overall structure, the present invention realizes a laser pipe cutting chuck using a motor as the clamping power source of the clamping jaws as a tailstock, solving the technical problems that need to be urgently solved in the industry; and compared with the existing general pneumatic tailstock using an in-built cylinder as the clamping power source, its structure is simpler, the manufacturing cost is lower, the clamping actions of the two groups of clamping jaws during the working process are easier to control, the synchronization accuracy is higher, and the working reliability is better. Description of the Drawings

[0015] Figure 1 is the front view of the present invention;

[0016] Figure 2 is Figure 1 the left view of, and the positions of the second lever and the second slider of the up-down clamping jaw transmission assembly are partially sectioned in the figure;

[0017] Figure 3 is Figure 2 the sectional view taken along the A-A direction of;

[0018] Figure 4 is the three-dimensional structure schematic diagram of the present invention;

[0019] Figure 5 is Figure 4 the longitudinal sectional structure schematic diagram passing through the axis.

[0020] The reference numerals in the above-mentioned drawings are as follows:

[0021] Frame 1, base 11, front plate 12, left plate 13, right plate 14, rotary drive mounting plate 15, mounting main shaft 16;

[0022] Rotary drive mechanism 2, rotary drive motor 21, driving gear 22, driven gear 23, first angular contact ball bearing 24, inner ring lock nut 24-1, first connecting sleeve 25, second connecting sleeve 26, gear dust cover 27;

[0023] Front cover 3;

[0024] Jaw 4, left and right jaws 41, up and down jaws 42;

[0025] Clamping drive mechanism 5, clamping drive motor 51, transmission shaft 51-1, coupling 52, lead screw 53, central vent hole 53-1, air inlet ring 53-2, dust blowing air inlet nozzle 53-3, lead screw nut 54;

[0026] Left and right jaw transmission assembly 6, support connection seat 61, second angular contact ball bearing 62, inner ring pressing cover 63, first outer ring pressing cover 64, first push block 65, air outlet channel 65-1, air outlet nozzle 65-2, first lever 66, first slider 67;

[0027] Up and down jaw transmission assembly 7, mounting sleeve 71, third angular contact ball bearing 72, inner ring pressing nut 73, second outer ring pressing cover 74, second push block 75, second lever 76, second slider 77;

[0028] Part clamping limit cover 8, limit cover connecting rod 81. Detailed implementation mode

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and the detailed implementation mode.

[0030] (Embodiment 1)

[0031] In this embodiment, when making an orientation description, the direction facing Figure 1 is the front in the description, and the direction facing away from Figure 1 is the rear in the description. Figure 1 The up and down, left and right directions in

[0032] are still the up and down, left and right directions in the description. Figures 1 to 5 As shown in

[0033] The frame 1 serves as the installation foundation of the electric laser pipe cutting chuck in this embodiment. As a specific implementation, in this embodiment, the frame 1 includes a base 11, a front plate 12 fixedly arranged above the front side of the base 11, a left plate 13 and a right plate 14 fixedly arranged above the base 11 and relatively arranged left and right at the rear side of the front plate 12 and both integrally or fixedly connected to the front plate 12, a rotary drive mounting plate 15 integrally or fixedly connected to the front side of the base 11 and the front plate 12, and a mounting main shaft 16 fixedly arranged on the front plate 12 after passing through the middle hole provided in the rotary drive mounting plate 15 respectively. A front-to-back mounting through hole is provided in the middle of the front plate 12, and a front-to-back through hole is provided along the axis of the mounting main shaft 16.

[0034] The rotary drive mechanism 2 is used to realize the overall rotation of the front cover 3 and the clamping jaws 4. The drive mechanism 2 includes a rotary drive motor 21, a driving gear 22, a driven gear 23, a first angular contact ball bearing 24, a first connecting sleeve 25, a second connecting sleeve 26 and a gear dust cover 27. The rotary drive motor 21, the driving gear 23, the driven gear 24 and the first angular contact ball bearing 25 are all commercially available parts. The rotary drive motor 21 is fixedly arranged on the rotary drive mounting plate 15 of the frame 1. The driving gear 22 is in transmission connection with the rotary drive motor 21, and the driven gear 23 is in meshing transmission connection with the driving gear 22. Two first angular contact ball bearings 24 are rotatably sleeved on the mounting main shaft 16 of the frame 1 in the front-to-back direction. The inner side of the first connecting sleeve 25 is fixedly connected to the outer rings of the two first angular contact ball bearings 24 in a transmission manner. The rear end of the first connecting sleeve 25 is integrally or fixedly connected to the driven gear 23, and the front end of the first connecting sleeve 25 is fixedly connected to the rear end of the second connecting sleeve 26. Preferably, the inner ring of the first angular contact ball bearing 24 located at the front side is locked by an inner ring locking nut 24-1 arranged on the mounting main shaft 17 to prevent it from moving during use. The gear dust cover 27 is arranged as a preferred method. The gear dust cover 27 is fixedly arranged on the rotary drive mounting plate 15 of the frame 1 and covers the driving gear 22 and the driven gear 23.

[0035] The front cover 3 is a structural member with an overall round cake shape. Four chutes are provided on the front cover 3 in the up-down direction and the left-right direction respectively. The front cover 3 is fixedly connected to the front end of the second connecting sleeve 26 of the rotary drive mechanism 2.

[0036] The clamping jaws 4 include two left-right clamping jaws 41 and two up-down clamping jaws 42. The specific structure of the clamping jaws 4 is the prior art and will not be elaborated. During use, the two left-right clamping jaws 41 and the two up-down clamping jaws 42 clamp or loosen the workpiece to be processed synchronously from the left-right direction and the up-down direction respectively.

[0037] The clamping drive mechanism 5 serves as the power source for the clamping and releasing actions of the two left-right jaws 41 and the two up-down jaws 42 of the jaw 4. As a specific implementation, the clamping drive mechanism 5 includes a clamping drive motor 51, a coupling 52, a lead screw 53, and a lead screw nut 54. The clamping drive motor 51 has a drive shaft 51-1 extending forward, and the front side of the lead screw 53 is provided with a thread that mates with the lead screw nut 54. The coupling 52 is fixedly connected to the drive shaft 51-1 of the clamping drive motor 51, the rear end of the lead screw 53 is drivingly connected to the coupling 52, and the lead screw nut 54 is movably disposed on the lead screw 53 in cooperation with the thread provided on the front side of the lead screw 53. During operation, the rotation of the clamping drive motor 51 can drive the lead screw 53 to rotate through the transmission of the drive shaft 51-1 and the coupling 52. At the same time, when the lead screw 53 is subjected to a forward and backward thrust, it can perform a forward and backward telescopic movement relying on the coupling 52.

[0038] The left-right jaw transmission assembly 6 is used to achieve the power transmission between the lead screw 53 of the clamping drive mechanism 5 and the two left-right jaws 41 for clamping and releasing actions. As a specific implementation, the left-right jaw transmission assembly 6 includes a support connection seat 61, a second angular contact ball bearing 62, an inner ring pressing cover 63, a first outer ring pressing cover 64, a first pushing block 65, a first lever 66, and a first slider 67.

[0039] Two second angular contact ball bearings 62 are respectively fixedly sleeved on the outer periphery of the support connection seat 61 by their inner rings and are arranged adjacent to each other front and back. The inner ring pressing cover 63 is provided as a preferred method. The inner ring pressing cover 63 is sleeved on the lead screw 53 and fixedly connected to the support connection seat 61 to lock the inner ring of the second angular contact ball bearing 62 located at the rear side to prevent it from moving backward during use. The first outer ring pressing cover 63 is sleeved on the rear end face of the outer ring of the second angular contact ball bearing 62 located at the rear side and fixedly connected to the first pushing block 65. The first pushing block 65 is fixedly sleeved on the outer end faces of the outer rings of the two second angular contact ball bearings 62 to achieve the forward and backward transmission between the two second angular contact ball bearings 62 and the first pushing block 65, and enable the first pushing block 65 to rotate relying on the outer rings of the two second angular contact ball bearings 62; there are two first levers 66 and two first sliders 67 respectively. One of the two first sliders 67 is slidably disposed in each of the two left-right chutes of the front cover 3; the front ends of the two first levers 66 are respectively drivingly connected to one first slider 67, and the rear ends of the two first levers 66 are both drivingly connected to the first pushing block 66.

[0040] The support connection seat 61 is fixedly connected to the front end of the lead screw 53, and the two first sliders 67 are respectively fixedly connected to the two left-right jaws 41 correspondingly, so that the transmission connection between the lead screw 53 and the two left-right jaws 41 is realized by the left-right jaw transmission assembly 6.

[0041] As a preferred embodiment, the electric laser pipe cutting chuck of this embodiment is further provided with a dust blowing gas passage for preventing dust and debris generated during processing from entering the inside of the chuck from the front end. Correspondingly, the lead screw 53 is provided with a front-to-back central vent hole 53-1 along its axis, and an air inlet ring 53-2 that is vent-connected to the central vent hole 53-1 of the lead screw 53 is provided on the lead screw 53. A dust blowing air inlet nozzle 53-3 is provided on the air inlet ring 53-2. Both the air inlet ring 53-2 and the dust blowing air inlet nozzle 53-3 are commercially available parts, and the assembly relationship between the air inlet ring 53-2 and the central vent hole 53-1 of the lead screw 53 is a prior art and will not be elaborated; an air outlet nozzle receiving hole is provided in the middle of the front cover 3; an air outlet passage 65-1 that is vent-connected to the front end of the central vent hole 53-1 of the lead screw 53 is provided in the first pushing block 65 of the left-right jaw transmission assembly 6, and an air outlet nozzle 65-2 that extends forward into the air outlet nozzle receiving hole of the front cover 3 is fixedly provided in the air outlet passage 65-1 of the first pushing block 65.

[0042] Thus, the dust blowing gas passage described above is jointly constituted by the dust blowing air inlet nozzle 53-3, the air inlet ring 53-2, the central vent hole 53-1 of the lead screw 53, the air outlet passage 65-1 of the first pushing block 65 of the left-right jaw transmission assembly 6, and the air outlet nozzle 65-2, which are arranged in sequence from the rear to the front.

[0043] The up-down jaw transmission assembly 7 is used to realize the power transmission for the lead screw nut 54 of the clamping drive mechanism 5 and the two up-down jaws 42 to perform clamping and loosening actions. As a specific implementation manner, the up-down jaw transmission assembly 7 includes a mounting sleeve 71, a third angular contact ball bearing 72, an inner ring pressing nut 73, a second outer ring pressing cover 74, a second pushing block 75, a second lever 76, and a second slider 77.

[0044] The mounting sleeve 71 is an integral rod-shaped structural member provided with an axial through hole along the axis line. The inner diameter of the mounting sleeve 71 is larger than the outer diameters of the lead screw 53 and the lead screw nut 54. The lead screw nut 54 is fixedly arranged at the front side of the mounting sleeve 71. The threaded portion of the lead screw 53 is flexibly matched with the lead screw nut 54, and the rear end of the lead screw 53 extends backward through the through hole axially arranged in the mounting sleeve 71 and the mounting spindle 17 of the frame 1; two third angular contact ball bearings 72 are respectively provided adjacent to each other by their inner rings being fixedly sleeved with the front outer periphery of the mounting sleeve 71; the inner ring clamping nut 73 is preferably arranged, and the inner ring clamping nut 73 is threadedly matched on the mounting sleeve 71 to clamp the inner ring of the third triangular contact ball bearing 73 located at the rear side to prevent it from moving during operation; the third The second outer ring clamping cover 74 is sleeved on the rear end surface of the outer ring of the third angular contact ball bearing 72 located on the rear side and is fixedly connected to the second push block 75. The second push block 75 is fixedly sleeved on the outer end surfaces of the outer rings of the two third angular contact ball bearings 72 to realize the front-to-back transmission between the two third angular contact ball bearings 72 and the second push block 75, and the second push block 75 can rotate relying on the outer rings of the two third angular contact ball bearings 72; there are two second levers 76 and second sliders 77 respectively, and the two second sliders 77 are slidably arranged one each in the two upper and lower sliding grooves of the front cover 3; the two second levers 76 are respectively connected to a second slider 77 by their front ends, and the rear ends of the two second levers 76 are connected to the second push block 75 by their rear ends.

[0045] The mounting sleeve 71 is fixedly connected to the lead screw nut 54 of the clamping drive mechanism 5, and the rear end of the mounting sleeve 71 can be movably inserted into the through hole of the mounting spindle 16 of the frame 1, and the two second sliders 77 are respectively fixedly connected to the two upper and lower clamping jaws 42, so that the transmission connection between the lead screw nut 54 and the two left and right clamping jaws 41 is realized by the upper and lower clamping jaw transmission assembly 7.

[0046] The second push block 75 of the vertical clamp transmission assembly 7 is airtightly and movably arranged on the inner side of the second connecting sleeve 26 of the rotary drive mechanism 2, and the first push block 65 of the left and right clamp transmission assembly 6 is airtightly and movably arranged on the inner side of the second push block 75 of the vertical clamp transmission assembly 7.

[0047] The clamping piece limit cover 8 is preferably provided, and the clamping piece limit cover 8 is fixed to the front end of the front cover 3 through a plurality of limit cover connecting rods 81. The clamping piece limit cover 8 is provided to prevent the workpiece from colliding with the front cover 3 and related components during use, and to shorten the tail end waste of the workpiece to avoid waste. The two left and right clamping jaws 41 and the two up and down clamping jaws 42 can be movably extended forward from the clamping piece limit cover 8.

[0048] The aforementioned angular contact ball bearings can be replaced by thrust bearings, and the specific structure is not described in detail, but the replacement is obviously an equivalent replacement.

[0049] The working principle and process of the electric laser pipe cutting chuck in this embodiment are briefly described as follows:

[0050] When the clamping drive motor 51 of the clamping drive mechanism 5 rotates forward, through the transmission of the transmission shaft 51-1 and the coupling 52, the lead screw 53 rotates forward. The lead screw nut 54 moves backward on the lead screw 53. The backward movement of the lead screw nut 54 drives the up-and-down jaw transmission assembly 7 fixedly connected to the lead screw nut 54, so that the two up-and-down jaws 42 make a centripetal clamping movement from the open state to clamp the workpiece to be processed; when the lead screw nut 54 moves backward on the lead screw 53, especially when the lead screw nut 54 reaches the end position on the lead screw 53, the lead screw 53 receives a forward thrust, and the lead screw 53 moves forward relying on the coupling 52. The forward movement of the lead screw 53 drives the left-and-right jaw transmission assembly 6 fixedly connected to the front end of the lead screw 53, so that the two left-and-right jaws 41 make a centripetal movement from the open state to clamp the workpiece to be processed. When the clamping drive motor 51 rotates reversely, it makes the opposite movement to the above, and the two left-and-right jaws 41 and the two up-and-down jaws 42 make a reset movement, which will not be elaborated here.

[0051] During the process of the two groups of jaws 4 clamping the workpiece to be processed for machining, if the workpiece to be processed needs to be rotated for machining, the rotation drive motor 21 of the rotation drive mechanism 2 is turned on. Through the transmission of the driving gear 22 and the driven gear 23, the first connecting sleeve 25 rotates relying on the two angular contact ball bearings 24, driving the second connecting sleeve 26 fixedly connected to the first connecting sleeve 25 to rotate synchronously. The rotation of the second connecting sleeve 26 drives the front cover 3 fixedly connected thereto to rotate. The rotation of the front cover 3 makes the two first sliders 67 arranged in the chute of the front cover 3, the two left-and-right jaws 41 fixedly arranged on the two first sliders 67, the two second sliders 77 and the two up-and-down jaws 42 fixedly arranged on the two second sliders 77 rotate synchronously with the front cover 3. The following rotation of the two first sliders 67 and the two second sliders 77 respectively drives the first push block 65 and the second push block 75 to rotate synchronously relying on the outer rings of the two angular contact ball bearings 62 and the two angular contact ball bearings 72, so that when each jaw 4 rotates, it does not interfere with its action of clamping the workpiece to be processed.

[0052] As can be seen from the foregoing, the electric laser pipe cutting chuck in this embodiment realizes a laser pipe cutting chuck as a tailstock that uses a motor as the clamping power source for the jaws through the design of the overall structure, and solves the technical problems that are urgently needed to be solved in the industry. And compared with the existing general pneumatic tailstock that uses an internal cylinder as the clamping power source, the electric laser pipe cutting chuck in this embodiment has a simpler structure, lower manufacturing cost, easier control of the clamping actions of the two groups of jaws during the working process, higher synchronous accuracy, and better working reliability.

[0053] The above embodiments are illustrative of the specific implementation manners of the present invention, rather than limitations thereof. Those skilled in the relevant technical field can also make various transformations and changes to obtain corresponding equivalent technical solutions without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should fall within the scope of patent protection of the present invention.

Claims

1. An electric laser pipe-cutting chuck, comprising a frame, two jaws respectively arranged in the left-right direction and the up-down direction, a front cover arranged at the rear end of the jaws and having two chutes respectively arranged in the left-right direction and the up-down direction, and a rotary drive mechanism fixedly arranged on the frame for driving the front cover and the jaws to rotate. It is characterized in that: It further includes a clamping drive mechanism as the power source for the jaws to perform clamping and loosening actions, and a left-right jaw transmission component and an up-down jaw transmission component for realizing the power transmission of the clamping drive mechanism to respectively perform clamping and loosening actions with the two left-right jaws and the two up-down jaws; the clamping drive mechanism includes a clamping drive motor having a transmission shaft, a coupling fixedly connected to the transmission shaft, a lead screw whose rear end is in transmission connection with the coupling and can move back and forth relying on the coupling, and a lead screw nut in dynamic fit with the lead screw; the clamping drive mechanism is respectively in transmission connection with the left-right jaw transmission component and the up-down jaw transmission component through its lead screw and lead screw nut. The left-right jaw transmission component includes a support connection seat, two second angular contact ball bearings fixedly sleeved on the support connection seat and arranged adjacent to each other front and back, a first push block fixedly sleeved on the outer ends of the two second angular contact ball bearings, a first outer ring pressing cover sleeved on the rear end face of the outer ring of the second angular contact ball bearing located at the rear side and fixedly connected to the first push block, a first slider slidably arranged in each of the two left-right chutes of the front cover, and two first levers whose front ends are respectively in transmission connection with a first slider and whose rear ends are both in transmission connection with the first push block; one of the two left-right jaws is fixedly arranged on each of the two first sliders; the front end of the lead screw of the clamping drive mechanism is fixedly connected to the support connection seat. The up-down jaw transmission component includes an installation sleeve, two third angular contact ball bearings respectively fixedly sleeved on the front outer periphery of the installation sleeve with their inner rings and arranged adjacent to each other front and back, a second push block fixedly sleeved on the outer ends of the two third angular contact ball bearings, a second outer ring pressing cover sleeved on the rear end face of the outer ring of the third angular contact ball bearing located at the rear side and fixedly connected to the second push block, a second slider slidably arranged in each of the two up-down chutes of the front cover, and two second levers whose front ends are respectively in transmission connection with a second slider and whose rear ends are both in transmission connection with the second push block; one of the two up-down jaws is fixedly arranged on each of the two second sliders; the lead screw nut of the clamping drive mechanism is fixedly arranged at the front side inside the installation sleeve, and the lead screw passes through the installation sleeve and extends to the front and back sides of the installation sleeve.

2. The electric laser pipe-cutting chuck according to claim 1, It is characterized in that: The left-right jaw transmission component further includes an inner ring pressing cover fixedly connected to the support connection seat for locking the inner ring of the second angular contact ball bearing located at the rear side, and the up-down jaw transmission component further includes an inner ring pressing nut arranged on the installation sleeve for pressing the inner ring of the third angular contact ball bearing located at the rear side.

3. The electric laser pipe-cutting chuck according to claim 1, It is characterized in that: The frame includes a base, a front plate fixedly arranged on the upper front side of the base, a left plate and a right plate fixedly arranged on the upper side of the base and oppositely arranged on the left and right sides of the rear side of the front plate and both integrally or fixedly connected with the front plate, a rotation drive mounting plate integrally or fixedly arranged on the front side of the base and the front plate, and a mounting spindle fixedly arranged on the front plate after passing through middle holes provided on the rotation drive mounting plate respectively; a front-to-back mounting through hole is provided in the middle of the front plate, and a front-to-back through hole is provided along the axis of the mounting spindle; the rear part of the mounting sleeve of the up-and-down clamping jaw transmission assembly can be movably inserted into the through hole of the mounting spindle, and the lead screw of the clamping drive mechanism passes through the through hole of the mounting spindle in the front-to-back directions.

4. The electric laser tube cutting chuck according to claim 3, Features: The rotary drive mechanism includes a rotary drive motor fixedly mounted on a rotary drive mounting plate of the frame, a driving gear drivingly connected to the rotary drive motor, a driven gear meshing with the driving gear, two first angular contact ball bearings rotatably mounted front and rear on the mounting main shaft of the frame, a first connecting sleeve whose inner side is drivingly fixedly connected to the outer rings of the two first angular contact ball bearings and whose rear end is integrally or fixedly connected to the driven gear, and a second connecting sleeve whose front and rear ends are respectively fixedly connected to the front cover and the front end of the first connecting sleeve; the second push block of the up and down clamping jaw transmission assembly is airtightly and movably arranged on the inner side of the second connecting sleeve, and the first push block of the left and right clamping jaw transmission assembly is airtightly and movably arranged on the inner side of the second push block of the up and down clamping jaw transmission assembly.

5. The electric laser tube cutting chuck according to claim 4, Features: The rotary drive mechanism also includes an inner ring locking nut which cooperates with the front end of the mounting spindle of the frame and is used to lock the inner ring of the first angular contact ball bearing located on the front side.

6. The electric laser tube cutting chuck according to claim 4, Features: The rotary drive mechanism also includes a gear dust cover which is fixed on the rotary drive mounting plate of the frame and covers the driving gear and the driven gear.

7. The electric laser tube cutting chuck according to any one of claims 1 to 6, Features: The lead screw is provided with a front-to-back central air vent along its axial line, the lead screw is provided with an air inlet ring connected to the central air vent of the lead screw, the air inlet ring is provided with a dust-blowing air inlet nozzle, and the middle of the front cover is provided with an air outlet nozzle accommodating hole; the first pushing block of the left-right clamping jaw transmission assembly is provided with an air outlet channel connected to the front end of the central air vent of the lead screw, and the air outlet nozzle extending forward from the air outlet nozzle accommodating hole of the front cover is fixedly provided in the air outlet channel of the first pushing block; thus, the dust-blowing air inlet nozzle and the air inlet ring, the central air vent of the lead screw, the air outlet channel of the first pushing block of the left-right clamping jaw transmission assembly, and the air outlet nozzle together constitute a dust-blowing gas channel.

8. The electric laser tube cutting chuck according to claim 1, Features: It also includes a clamp limit cover fixed to the front end of the front cover through a limit cover connecting rod, and the two left and right clamping claws and the two up and down clamping claws can be movably extended forward from the clamp limit cover.

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