CN113319592A

CN113319592A - Multi-axis linkage numerical control lathe structure

Info

Publication number: CN113319592A
Application number: CN202011206671.5A
Authority: CN
Inventors: 陈安富
Original assignee: Wuhu Liran Machinery Co ltd
Current assignee: Wuhu Liran Machinery Co ltd
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2021-08-31

Abstract

The invention discloses a multi-axis linkage numerical control lathe structure which comprises a machine tool, wherein a transmission belt device is arranged at the top of the machine tool, a protective cover is arranged at the upper end of the transmission belt device, two groups of multi-axis linkage mechanisms are symmetrically arranged on two sides of the machine tool, each group of multi-axis linkage mechanisms comprises lifting rods, one end of an output shaft at the top of each lifting rod is connected with a lifting block, a limiting rod transversely penetrates through each lifting block, limiting notches are symmetrically formed in two sides of each limiting rod, sliding shafts are movably inserted in each limiting notch, each two sliding shafts on each limiting rod are rotatably connected with a bending connecting rod, the machine tool is divided into a feeding end and a discharging end, a laser cutting device, a plane polishing device and a scrap collecting device are sequentially arranged above a material conveying belt along the feeding end to the discharging end and are in driving connection with the multi-axis linkage mechanisms one by one. The invention can save equipment cost by utilizing two groups of multi-shaft linkage mechanisms, also reduces manual transfer cost, achieves the effect of one machine with multiple purposes and improves production capacity.

Description

Multi-axis linkage numerical control lathe structure

Technical Field

The invention mainly relates to the technical field of numerical control machine tools, in particular to a multi-axis linkage numerical control lathe structure.

Background

The numerical control machine tool is an automatic machine tool provided with a program control system. The control system is capable of logically processing and decoding a program defined by a control code or other symbolic instructions, represented by coded numbers, which are input to the numerical control device via the information carrier. After operation, the numerical control device sends out various control signals to control the action of the machine tool, and the parts are automatically machined according to the shape and the size required by the drawing. However, most of the existing machine tools are designed according to functional categories, such as a machine tool for cutting grooves on a plane of a plate material, which is classified into a cutting machine tool, a polishing machine tool, a cleaning machine tool, and the like, and even if a plurality of functions are combined on the same machine tool platform, a plurality of driving devices are required to be used for division and cooperation, so that the equipment cost is increased.

For example, patent document No. CN104191093B provides a laser cutter with an automatic positioning function, which includes an upper computer communication system, a single chip microcomputer minimum system, a touch screen system, a stepping motor control system, a mechanical drive system, a machine tool and a laser cutter system, wherein the touch screen system is installed on a touch screen console on the side surface of the machine tool body, the laser cutting system is installed on the machine tool body, the mechanical drive system is installed between bearing seats inside the machine tool, the upper computer communication system, the single chip microcomputer minimum system and the stepping motor control system are installed in an electric box on the side surface of the machine tool body, and the single chip microcomputer minimum system is respectively connected with the upper computer communication system, the touch screen system and the stepping motor control system. The invention adopts the stepping motor to drive, avoids the defect of complex traditional mechanical transmission driving mechanism, adopts the cross-shaped structure lead screw to drive, ensures that the slide block can only do X, Y-direction linear motion, and avoids the problem that the traditional I-shaped structure can not realize the synchronization of the feed motion of the left and right lead screws.

Therefore, there is a need to develop a multi-axis linkage mechanism for reducing the number of driving devices on the platform of the machine tool to implement various processing functions in order, so as to achieve the effects of increasing the product yield and reducing the equipment cost and labor cost.

Disclosure of Invention

The invention mainly provides a multi-axis linkage numerical control lathe structure which is used for solving the technical problems in the background technology.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a multi-shaft linkage numerical control lathe structure comprises a machine tool, wherein a transmission belt device is arranged at the top of the machine tool, a protective cover is arranged at the upper end of the transmission belt device, the protective cover is U-shaped and is reversely buckled right above the machine tool and is connected with the edges of the tops of two sides of the machine tool, two groups of multi-shaft linkage mechanisms are symmetrically arranged at two sides of the machine tool, each group of multi-shaft linkage mechanisms comprises lifting rods, the bottom of each lifting rod is connected with a fixed seat, each fixed seat is detachably connected with the side wall of the machine tool and keeps the lifting rod vertically arranged, one end of an output shaft at the top of each lifting rod is connected with a lifting block, a limiting rod transversely penetrates through each lifting block, limiting notches are symmetrically formed in two sides of each lifting block, sliding shafts are movably inserted in each limiting notch, and two sliding shafts on each limiting rod are rotatably connected with a bending connecting rod, two of each side bend the connecting rod and all be the setting of gull wing shape, the middle part of every connecting rod of bending is bent the position and is all alternated to be equipped with the location reel, every location reel all runs through corresponding protection casing lateral wall and extends to the inner wall and be detachable connection.

Further, the transmission band device is provided with the several antislip strips including material conveyer belt on this material conveyer belt horizontal equidistance.

Further, the lathe divide into feed end and discharge end, material conveyer belt top is equipped with laser cutting device, plane grinding device and sweeps collection device along feed end to discharge end in proper order, just correspond laser cutting device, plane grinding device and sweeps collection device respectively on the lateral wall of protection casing both sides and seted up three vertical mouths of a strip of group, every vertical mouth of a strip of group all is equipped with two and is the symmetry setting.

Furthermore, the laser cutting device comprises a support frame, two transverse linear modules, two longitudinal linear modules and two first shaft seats, wherein the two first shaft seats are symmetrically and fixedly arranged at the centers of the tops of the two sides, close to the inner wall of the protective cover, of the support frame, the two ends of each transverse linear module are respectively connected with the two first shaft seats, each longitudinal linear module is located at the lower end of each transverse linear module and is in sliding connection through a sliding block, two limiting sliding shafts are symmetrically arranged at the two ends of each longitudinal linear module, and a laser cutter is arranged at the lower end of each longitudinal linear module and is in sliding connection through the sliding block.

Furthermore, two convex blocks are symmetrically arranged on the outer walls of the two sides of the support frame corresponding to the inner wall of the protective cover respectively, a sliding groove which is vertically arranged is formed in the inner wall of the two sides of the protective cover one by one corresponding to each convex block, a limiting strip opening is formed in the two sides of the support frame corresponding to the two limiting sliding shafts respectively, and each limiting sliding shaft penetrates through the corresponding limiting strip opening and is in sliding connection.

Furthermore, the two first shaft seats respectively penetrate through a group of vertical bar openings close to the feeding end of the machine tool and extend to the outside to be rotatably connected with one ends, far away from the sliding shaft, of the two corresponding bending connecting rods.

Further, plane grinding device is including backup pad, secondary shaft seat, motor and the dish of polishing, the secondary shaft seat is equipped with two altogether the secondary shaft seat symmetry sets firmly in the both sides top center department that the backup pad is close to the protection casing inner wall, the motor sets firmly in backup pad upper surface center department and runs through the backup pad through the output shaft activity and extend to the lower extreme and be connected with the dish upper end of polishing, the dish lower extreme demountable installation of polishing is polished and is polished the piece.

Furthermore, the two second shaft seats respectively penetrate through the group of vertical bar openings in the middle and extend to the outside to be connected with the two corresponding lifting blocks through bolts.

Further, sweeps collection device is including underframe, third axle bed, loudspeaker cover and scalable bellows, the third axle bed is equipped with two altogether the third axle bed symmetry sets firmly in the underframe and is close to the both sides top center department of protection casing inner wall, underframe ring edge a week is equipped with the sheet rubber, loudspeaker cover stub end and underframe upper end sealing connection, scalable bellows one end and loudspeaker cover stub end sealing connection, the scalable bellows other end runs through protection casing top casing and extends to the upper end, lathe one side is equipped with the blast air dust collector, the blast air dust collector is including collection dirt tuber pipe, collection dirt tuber pipe one end set firmly in the protection casing top and with scalable bellows sealing connection.

Furthermore, two third shaft seats respectively run through a group of vertical bar openings close to the discharge end of the machine tool and extend to the outside to be rotatably connected with one ends, far away from the sliding shaft, of the two corresponding bending connecting rods.

Compared with the prior art, the invention has the beneficial effects that:

the invention realizes the direct lifting of the lifting block by two groups of multi-shaft linkage mechanisms symmetrically arranged at two sides of a machine tool platform, simultaneously realizes the synchronous rotary lifting motion by respectively controlling two bending connecting rods arranged in a gull wing shape by two limiting notches on a limiting rod through a sliding shaft, thereby controlling a laser cutting device, a plane grinding device and a scrap collecting device on the machine tool platform to carry out ordered lifting according to the processing procedure to process products, three plates can be orderly placed for processing according to time intervals and corresponding distances when the plates are cut, the plates are conveyed by a conveying belt device, a first plate which finishes the cutting procedure firstly enters the grinding procedure, a second plate and the like are to be cut, then the second plate is cut and then transferred to the grinding procedure, the first plate is continuously transferred to the cleaning procedure, and when a third plate is cut, make first panel wash in step, orderly implementation multi-functional processing work in proper order utilizes two sets of multiaxis link gear can practice thrift every process and all need be equipped with corresponding drive arrangement's cost, has also reduced the artifical cost of transporting when the product continues next process, accomplishes the effect of a tractor serves several purposes, improves production capacity.

The present invention will be explained in detail below with reference to the drawings and specific embodiments.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of a multi-axis linkage mechanism of the present invention;

FIG. 3 is a top view of the laser cutting apparatus of the present invention;

FIG. 4 is a partial sectional view of the laser cutting apparatus of the present invention;

FIG. 5 is an enlarged view of area A of FIG. 1;

FIG. 6 is a schematic structural view of a flat surface polishing device according to the present invention;

fig. 7 is a schematic structural view of a scrap collecting apparatus according to the present invention.

Description of the drawings: 1. a machine tool; 11. a controller; 2. a protective cover; 21. a chute; 22. a vertical strip port; 3. a blower dust collector; 31. a dust collecting air duct; 4. a transmission belt device; 41. a material conveying belt; 41a, anti-slip strips; 5. a multi-axis linkage mechanism; 51. a lifting rod; 51a, a fixed seat; 51b, a lifting block; 52. a limiting rod; 52a, a limit notch; 52b, a slide shaft; 53. bending the connecting rod; 53a, a positioning shaft disc; 6. a laser cutting device; 61. a support frame; 61a, a bump; 61b, a limit strip opening; 62. a transverse straight line module; 63. a longitudinal straight line module; 63a, a limiting sliding shaft; 63b, a laser cutter; 64. a first shaft seat; 7. a plane polishing device; 71. a support plate; 72. a second shaft base; 73. a motor; 74. grinding disc; 74a, polishing and lapping; 8. a scrap collecting device; 81. a bottom frame; 81a, a rubber sheet; 82. a third shaft seat; 83. a horn cover; 84. a collapsible bellows.

Detailed Description

In order to facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which may be embodied in different forms and not limited to the embodiments described herein, but which are provided so as to provide a more thorough and complete disclosure of the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the knowledge of the terms used herein in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In the embodiment, please refer to fig. 1-7, a multi-axis linkage numerically controlled lathe structure comprises a machine tool 1, a conveyor belt device 4 is arranged on the top of the machine tool 1, the conveyor belt device 4 comprises a material conveying belt 41, a plurality of anti-slip strips 41a are arranged on the material conveying belt 41 at equal intervals in the transverse direction, the rotation of the material conveying belt 41 is realized by driving a rotating roller by a matched motor, so that a plate to be cut can move, the arrangement of the anti-slip strips 41a increases the friction degree between the material conveying belt 41 and the plate, and avoids the occurrence of a slip or random displacement, a protective cover 2 is arranged on the upper end of the conveyor belt device 4, the protective cover 2 is U-shaped and is reversely buckled right above the machine tool 1 to be connected with the edges of the tops of the two sides of the machine tool 1, the protective cover 2 can avoid dust overflow during processing, and can also improve the processing safety, two sets of multi-axis linkage mechanisms 5 are symmetrically arranged on the two sides of the machine tool 1, each group of multi-shaft linkage mechanisms 5 comprises a lifting rod 51 (model 64STG), the lifting rod 51 can adopt an electric lifting push rod, the lifting function is controlled by a controller 11 matched with the machine tool 1, the controller 11 is a common PLC programmable control module, the bottom of each lifting rod 51 is connected with a fixed seat 51a, each fixed seat 51a is detachably connected with the side wall of the machine tool 1 and keeps the lifting rod 51 to be vertically arranged, one end of an output shaft at the top of each lifting rod 51 is connected with a lifting block 51b, each lifting block 51b is transversely provided with a limiting rod 52 in a penetrating way, each limiting rod 52 is positioned at two sides of the lifting block 51b and symmetrically provided with limiting notches 52a, a sliding shaft 52b is movably inserted in each limiting notch 52a, two sliding shafts 52b on each limiting rod 52 are rotatably connected with a bending connecting rod 53, and two bending connecting rods 53 at each side are arranged in a gull wing shape, a positioning shaft disc 53a is inserted at the middle bending part of each bending connecting rod 53, the bending connecting rods 53 rotate under the support of the positioning shaft discs 53a to change the height position adjustment of two ends, each positioning shaft disc 53a penetrates through the side wall of the corresponding protective cover 2 and extends to the inner wall to be detachably connected, screws can be used for fixing during connection, the machine tool 1 is divided into a feeding end and a discharging end, a laser cutting device 6, a plane polishing device 7 and a scrap collecting device 8 are sequentially arranged above the material conveying belt 41 from the feeding end to the discharging end, three groups of vertical bar openings 22 are respectively arranged on the side wall of two sides of the protective cover 2 corresponding to the laser cutting device 6, the plane polishing device 7 and the scrap collecting device 8, two vertical bar openings 22 are symmetrically arranged, plates are sequentially placed at the feeding end at a constant speed at corresponding time intervals, and are conveyed to the lower part of the laser cutting device 6 by the material conveying belt 41 to be cut, carry to carry and carry out burnishing and polishing to plane grinding device 7 below, carry to carry out the cleaning work that the sweeps was collected to 8 below sweeps collection device, through orderly processing mode, can improve machining efficiency to add three at first panel as a set of man-hour, can realize laser cutting device 6, plane grinding device 7 and sweeps collection device 8's linkage operation through lifter 51 elevating work, reduce the processing cost that a plurality of drive arrangement transfer work produced.

Specifically, referring to fig. 1, 3, 4 and 5, the laser cutting device 6 includes a support frame 61, a transverse linear module 62 (model VSS60), a longitudinal linear module 63 (model VSS60) and two first shaft seats 64, the two first shaft seats 64 are symmetrically and fixedly disposed at the centers of the tops of two sides of the support frame 61 near the inner wall of the shield 2, two ends of the transverse linear module 62 are respectively connected with the two first shaft seats 64, the longitudinal linear module 63 is disposed at the lower end of the transverse linear module 62 and slidably connected through a slider, two ends of the longitudinal linear module 63 are symmetrically provided with two limiting sliding shafts 63a, the lower end of the longitudinal linear module 63 is provided with a laser cutter 63b and slidably connected through a slider, two outer walls of two sides of the support frame 61 corresponding to the inner wall of the shield 2 are respectively symmetrically provided with two protrusions 61a, the inner walls of the two sides of the protective cover 2 are respectively provided with a sliding groove 21 which is vertically arranged corresponding to each bump 61a, the two sides of the support frame 61 corresponding to the two limiting sliding shafts 63a are respectively provided with a limiting strip port 61b, each limiting sliding shaft 63a penetrates through the corresponding limiting strip port 61b and is in sliding connection, the two first shaft seats 64 respectively penetrate through a group of vertical strip ports 22 close to the feeding end of the machine tool 1 and extend to the outside to be in rotating connection with one ends of the two corresponding bending connecting rods 53 far away from the sliding shaft 52b, the working positions of the laser cutters 63b can be changed in real time through the transverse linear module 62 and the longitudinal linear module 63, the plates are cut and processed in a coordinate interval of a plane X axis and a plane Y axis which does not exceed the area of the support frame 61, and the shafts on the two first shaft seats 64 penetrate through the corresponding vertical strip ports 22 on the two sides and are in rotating connection, when the lifting rod 51 controls the bending connecting rod 53 to lift, the whole of the support frame 61 can be kept to move up and down, the plate is pressed close to cut when the plate descends, the plate is kept away from when the plate ascends, the work is suspended, two pairs of convex blocks 61a on two sides of the support frame 61 can be embedded into the sliding grooves 21 on the inner walls of two sides of the protective cover 2 one by one to slide, so that the whole support frame 61 can move up and down more stably, and the cutting stability is also improved.

Specifically, referring to fig. 1 and 6, the plane grinding device 7 includes two support plates 71, two second shaft seats 72, a motor 73 and a grinding disc 74, the two second shaft seats 72 are symmetrically and fixedly disposed at the centers of the tops of the two sides of the inner wall of the shield 2 of the support plate 71, the motor 73 is fixedly disposed at the center of the upper surface of the support plate 71 and movably penetrates through the support plate 71 through an output shaft to extend to the lower end to be connected with the upper end of the grinding disc 74, the lower end of the grinding disc 74 is detachably mounted with a polishing grinding disc 74a, the polishing grinding disc 74a is made of a colloidal material and can polish and grind the surface while protecting the plate, the two second shaft seats 72 respectively penetrate through a group of vertical bar openings 22 disposed in the middle and extend to the outside to be connected with the corresponding two lifting blocks 51b through bolts, the shafts of the two second shaft seats 72 penetrate through the vertical bar openings 22 at the two sides to, when the lifting rod 51 controls the lifting block 51b to lift, the whole supporting plate 71 can be kept to lift up and down, polishing and grinding are carried out by clinging to the plate when the supporting plate is lowered, and the supporting plate is far away from the plate and stops working when the supporting plate is raised.

Specifically, referring to fig. 1 and 7, the scrap collecting device 8 includes a bottom frame 81, two third shaft seats 82, a horn cover 83 and a telescopic bellows 84, the third shaft seats 82 are symmetrically and fixedly disposed at the centers of the top of two sides of the bottom frame 81 close to the inner wall of the shield 2, a rubber sheet 81a is disposed around the periphery of the bottom frame 81 for contacting the periphery of the plate to perform buffering protection, and increasing the sealing property and collecting efficiency, the large end of the horn cover 83 is hermetically connected to the upper end of the bottom frame 81, one end of the telescopic bellows 84 is hermetically connected to the small end of the horn cover 83, the other end of the telescopic bellows 84 penetrates through the top shell of the shield 2 and extends to the upper end, a blower dust collector 3 is disposed at one side of the machine tool 1, the blower dust collector 3 includes a dust collecting air pipe 31, one end of the dust collecting air pipe 31 is fixedly disposed at the top of the shield 2 and is hermetically connected to the telescopic bellows 84, the two third shaft seats 82 respectively penetrate through a group of vertical bar openings 22 close to the discharge end of the machine tool 1 and extend to the outside to be rotatably connected with one ends, far away from the sliding shaft 52b, of the two corresponding bending connecting rods 53, the shafts of the two third shaft seats 82 penetrate through the vertical bar openings 22 on the two sides to be rotatably connected with the corresponding bending connecting rods 53, when the lifting rod 51 controls the bending connecting rods 53 to lift, the whole bottom frame 81 can be kept to move up and down, the rubber sheet 81a is tightly attached to the edge of a plate when the bottom frame is lowered, the telescopic corrugated pipe 84 can be adjusted in a telescopic mode along with the lifting of the bottom frame 81, the blower dust collector 3 is started to work to generate suction air flow, waste chips, dust and the like generated during cutting and polishing are conveyed into the dust collector through the horn cover 83, the telescopic corrugated pipe 84 and the dust collecting air pipe 31, and when the bottom frame is lifted, the waste chips, the dust collecting air pipe 31 is far away from the plate and stops working.

The specific operation flow of the invention is as follows:

firstly, starting the transmission belt device 4 on the machine tool 1 to work, putting the first three plates as a group on the material transmission belt 41 from the feeding end in sequence according to a set time interval, controlling the lifting rods 51, the laser cutting device 6, the plane polishing device 7 and the scrap collecting device 8 to work by the controller 11 matched with the machine tool 1, when the first plate is conveyed to the lower part of the laser cutting device 6, the two lifting rods 51 rise, driving the support frame 61 to descend by the bending connecting rod 53, realizing that the laser cutter 63b is close to the first plate to cut, changing the working position of the laser cutter 63b in real time by the transverse straight line module 62 and the longitudinal straight line module 63, cutting the plate in the coordinate interval of the plane X axis and the Y axis which does not exceed the area of the support frame 61, at the moment, the bottom frame 81 also descends, but the air blower dust collector 3 does not work, after the first plate is cut, the first plate is conveyed to the position below the plane grinding device 7, at the moment, the two lifting rods 51 descend to drive the supporting plate 71 to descend, so that the polishing and grinding sheet 74a is tightly attached to the plate for polishing and grinding, after the grinding is finished, the second plate is continuously placed on the material conveying belt 41, the two lifting rods 51 are also controlled to ascend, the support frame 61 is driven to descend by virtue of the bending connecting rod 53, the laser cutter 63b is close to the second plate for cutting, after the cutting is finished, the material conveying belt 41 starts to convey the first plate to the position below the scrap collecting device 8, the second plate is conveyed to the position below the plane grinding device 7, then a third plate can be placed, the previous operations are repeated, at the moment, the descending of the scrap collecting device 8 can work, the first plate is cleaned, and the synchronously descending laser cutter 63b can also cut the third plate, by analogy, the subsequent plate to be cut is supplemented after the station is vacated.

The invention is described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the above-described embodiments, and it is within the scope of the invention to adopt such insubstantial modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.

Claims

1. A multi-axis linkage numerical control lathe structure comprises a machine tool (1) and is characterized in that a transmission belt device (4) is arranged at the top of the machine tool (1), a protective cover (2) is arranged at the upper end of the transmission belt device (4), the protective cover (2) is U-shaped and is reversely buckled right above the machine tool (1) and is connected with the edges of the tops of two sides of the machine tool (1), two groups of multi-axis linkage mechanisms (5) are symmetrically arranged on two sides of the machine tool (1), each group of multi-axis linkage mechanisms (5) comprises a lifting rod (51), the bottom of each lifting rod (51) is connected with a fixed seat (51a), each fixed seat (51a) is detachably connected with the side wall of the machine tool (1) and keeps the lifting rods (51) vertically arranged, one end of an output shaft at the top of each lifting rod (51) is connected with a lifting block (51b), and a limiting rod (52) transversely penetrates through each lifting block (51b), every gag lever post (52) are located elevator (51b) bilateral symmetry and have seted up spacing notch (52a), every equal activity interlude has slide shaft (52b) in spacing notch (52a), and two slide shaft (52b) on every gag lever post (52) all rotate and be connected with the connecting rod (53) of bending, two of every side connecting rod (53) of bending all are the setting of gull wing, and the middle part of every connecting rod (53) of bending all alternates and are equipped with location reel (53a), every location reel (53a) all run through corresponding protection casing (2) lateral wall and extend to the inner wall and be and can dismantle the connection.

2. The structure of the multi-axis linkage numerically controlled lathe according to claim 1, wherein the conveying belt device (4) comprises a material conveying belt (41), and a plurality of anti-slip strips (41a) are arranged on the material conveying belt (41) at equal intervals in the transverse direction.

3. The structure of the multi-axis linkage numerical control lathe according to claim 2, wherein the machine tool (1) is divided into a feeding end and a discharging end, a laser cutting device (6), a plane grinding device (7) and a scrap collecting device (8) are sequentially arranged above the material conveying belt (41) along the feeding end to the discharging end, three groups of vertical bar openings (22) are formed in the side walls of the two sides of the protective cover (2) and correspond to the laser cutting device (6), the plane grinding device (7) and the scrap collecting device (8) respectively, and two vertical bar openings (22) are formed and are symmetrically arranged.

4. The structure of a multi-axis linked numerically controlled lathe according to claim 3, the laser cutting device (6) comprises a support frame (61), a transverse linear module (62), a longitudinal linear module (63) and a first shaft seat (64), the number of the first shaft seats (64) is two, the two first shaft seats (64) are symmetrically and fixedly arranged at the centers of the tops of two sides of the support frame (61) close to the inner wall of the protective cover (2), two ends of the transverse straight line module (62) are respectively connected with two first shaft seats (64), the longitudinal linear module (63) is positioned at the lower end of the transverse linear module (62) and is connected with the transverse linear module in a sliding way through a sliding block, two limiting sliding shafts (63a) are symmetrically arranged at two ends of the longitudinal straight line module (63), and the lower end of the longitudinal linear module (63) is provided with a laser cutter (63b) which is connected in a sliding way through a sliding block.

5. The structure of the multi-spindle linkage numerically controlled lathe according to claim 4, wherein the two outer walls of the two sides of the inner wall of the support frame (61) corresponding to the protective cover (2) are symmetrically provided with two convex blocks (61a), the inner walls of the two sides of the protective cover (2) are provided with vertically arranged sliding grooves (21) corresponding to each convex block (61a) one by one, the two sides of the support frame (61) corresponding to the two limit sliding shafts (63a) are provided with limit strip openings (61b), and each limit sliding shaft (63a) penetrates through the corresponding limit strip opening (61b) and is connected in a sliding manner.

6. The structure of the numerical control lathe with the multi-axis linkage as recited in claim 4, characterized in that the two first shaft seats (64) respectively penetrate through a group of vertical bar openings (22) close to the feeding end of the lathe (1) and extend to the outside to be in rotating connection with the ends of the two corresponding bending connecting rods (53) far away from the sliding shaft (52 b).

7. The structure of the multi-axis linkage numerically controlled lathe according to claim 3, wherein the plane grinding device (7) comprises a support plate (71), two second shaft seats (72), two motors (73) and two grinding discs (74), the two second shaft seats (72) are symmetrically and fixedly arranged at the centers of the tops of two sides, close to the inner wall of the protective cover (2), of the support plate (71), the motors (73) are fixedly arranged at the centers of the upper surfaces of the support plate (71) and movably penetrate through the support plate (71) through output shafts to extend to the lower ends to be connected with the upper ends of the grinding discs (74), and the lower ends of the grinding discs (74) are detachably provided with polishing grinding discs (74 a).

8. The structure of the multi-spindle numerical control lathe according to claim 7, wherein the two second spindle seats (72) respectively penetrate through the middle set of vertical bar openings (22) and extend to the outside to be connected with the two corresponding lifting blocks (51b) through bolts.

9. The structure of a multi-spindle linked numerically controlled lathe according to claim 3, wherein the scrap collecting device (8) comprises a bottom frame (81), two third shaft seats (82), two horn covers (83) and two telescopic bellows (84), the two third shaft seats (82) are symmetrically and fixedly arranged at the centers of the tops of two sides of the bottom frame (81) close to the inner wall of the protecting cover (2), a rubber sheet (81a) is arranged on one circumference of the circumferential edge of the bottom frame (81), the large end of each horn cover (83) is hermetically connected with the upper end of the bottom frame (81), one end of each telescopic bellows (84) is hermetically connected with the small end of each horn cover (83), the other end of each telescopic bellows (84) penetrates through the top shell of the protecting cover (2) and extends to the upper end, a dust blower (3) is arranged on one side of the machine tool (1), the blowing dust collector (3) comprises a dust collecting air pipe (31), and one end of the dust collecting air pipe (31) is fixedly arranged at the top of the protective cover (2) and is in sealing connection with the telescopic corrugated pipe (84).

10. The structure of the numerical control lathe with the multi-axis linkage as recited in claim 9, characterized in that the two third shaft seats (82) respectively penetrate through a group of vertical bar openings (22) close to the discharge end of the machine tool (1) and extend to the outside to be in rotating connection with the ends of the two corresponding bending connecting rods (53) far away from the sliding shaft (52 b).