Fully automatic cutting CNC machine tools

Abstract

The present invention relates to the technical field of cutting machines, and discloses a fully automatic cutting CNC machine tool, including a machine tool and a cutting mechanism, wherein two slides are symmetrically slidably arranged on the machine tool, and clamping mechanisms are arranged on the two slides, and the two clamping mechanisms are used to clamp metal pipes; two indexing mechanisms and two reciprocating mechanisms are also symmetrically arranged on the machine tool, and the reciprocating mechanisms are used to drive the slides and the metal pipes to reciprocate along the cutting direction of the cutting mechanism; when the metal pipe moves to the cutting mechanism, the metal pipe is cut by the cutting mechanism, and the length of the cut is less than the circumference of the metal pipe. The fully automatic cutting CNC machine tool completes the segmented multiple cutting of the metal pipe by indexing the metal pipe during the reciprocating movement, thereby reducing the cutting difficulty, reducing burrs and protrusions and facilitating trimming, and the specific multi-segment cutting stroke can be automatically adjusted according to the radius of the metal pipe.

Description

Technical Field

[0001] The invention relates to the technical field of cutting machines, in particular to a fully automatic cutting CNC machine tool. Background Art

[0002] CNC cutting machine tools are machines that automatically cut according to a given program when instructions are given to the control device of a CNC automatic cutting machine. CNC cutting technology is an organic combination of traditional machining processes with computer numerical control technology, computer-aided design and computer-aided manufacturing technology. Compared with traditional manual and semi-automatic cutting, CNC cutting can effectively control and improve cutting quality and efficiency through the cutting technology, cutting process and automatic control technology provided by the CNC system, i.e. the controller.

[0003] When existing CNC cutting machines are cutting metal pipes, an arc-shaped cutting line is formed when the metal pipe contacts the saw blade. The cutting line first expands and then gradually shrinks as the metal pipe moves toward the saw blade. In this process, as the cutting line gradually expands, the contact area between the saw blade and the metal pipe increases, and the friction generated also increases. The cutting difficulty increases, making it easier to generate burrs and protrusions, which is not convenient for later trimming.

[0004] Therefore, in order to solve the above technical problems existing in the prior art, a fully automatic cutting CNC machine tool is proposed. Summary of the invention

[0005] The present invention provides a fully automatic cutting CNC machine tool, which has the function of completing multiple segmented cutting of the metal pipe by rotating the metal pipe during the reciprocating movement, thereby reducing the cutting difficulty, reducing burrs and protrusions and facilitating trimming, and the specific multi-segment cutting stroke can be automatically adjusted according to the radius of the metal pipe. It solves the problem mentioned in the above background technology that in the process of cutting the metal pipe, the existing CNC cutting machine tool will form an arc-shaped cutting line when the metal pipe contacts the saw blade, and the cutting line will first expand and then gradually shrink during the process of the metal pipe moving toward the saw blade. In this process, due to the gradual expansion of the cutting line, the contact area between the saw blade and the metal pipe increases, and the friction force generated is also increased. The increased cutting difficulty makes it easier to generate burrs and protrusions, which is not convenient for later trimming.

[0006] The present invention provides the following technical solution: a fully automatic cutting CNC machine tool, comprising a machine tool and a cutting mechanism, wherein two slide seats are symmetrically slidably arranged on the machine tool, and clamping mechanisms are arranged on the two slide seats, and the two clamping mechanisms are used to clamp metal pipes;

[0007] The machine tool is also symmetrically provided with two indexing mechanisms and two reciprocating mechanisms, and the reciprocating mechanisms are used to drive the slide and the metal pipe to reciprocate along the cutting direction of the cutting mechanism;

[0008] In the process that the metal tube moves toward the cutting mechanism for the first time, when the metal tube moves to the cutting mechanism, the metal tube is cut by the cutting mechanism, and the length of the cut is less than the circumference of the metal tube;

[0009] When the metal tube continues to reciprocate toward the cutting mechanism, the metal tube is controlled by the transfer mechanism to rotate first and then cut.

[0010] As an optional solution of the fully automatic cutting CNC machine tool described in the present invention, the cutting mechanism includes a mounting frame arranged on the machine tool, a first rotating shaft is rotatably arranged on the mounting frame, a saw blade is arranged on the first rotating shaft, and a first motor is also arranged on the mounting frame, and the output shaft of the first motor is connected to the first rotating shaft through a belt drive device.

[0011] As an optional solution of the fully automatic cutting CNC machine tool described in the present invention, wherein: the clamping mechanism includes a rotating seat rotatably arranged on the sliding seat, a plurality of clamping claws are slidably arranged on the rotating seat, and the plurality of clamping claws are equidistantly distributed on the rotating seat in the circumferential direction;

[0012] The clamping mechanism also includes a first driving assembly, which is used to drive a plurality of the clamping jaws to move radially based on the radial direction of the rotating seat to clamp and position the metal pipe.

[0013] As an optional solution of the fully automatic cutting CNC machine tool described in the present invention, wherein: the first driving assembly includes a first sliding rod slidably arranged on the rotating seat, a plurality of first connecting seats are circumferentially arranged on the first sliding rod, and a plurality of the clamping jaws are each provided with a second connecting seat;

[0014] The first driving assembly also includes a plurality of first connecting rods, both ends of which are respectively hinged to the first connecting seat and the second connecting seat through hinge shafts, a cylinder is provided on the sliding seat, a third connecting seat is provided on the output shaft of the cylinder, and the first sliding rod is rotatably connected to the third connecting seat.

[0015] As an optional solution of the fully automatic cutting CNC machine tool described in the present invention, wherein: the indexing mechanism includes a second rotating shaft rotatably arranged on the slide, the second rotating shaft is provided with a first gear, the machine tool is provided with a rack, and the rack is meshed with the first gear;

[0016] The transfer mechanism further comprises a one-way transmission component, and only when the metal tube moves in a direction away from the cutting mechanism, the second rotating shaft is transmission-connected to the rotating seat through the one-way transmission component.

[0017] As an optional solution of the fully automatic cutting CNC machine tool described in the present invention, wherein: the one-way transmission assembly includes a first turntable rotatably arranged on the slide seat, the first turntable is provided with a second gear, the turntable is provided with a third gear, and the third gear is meshed with the second gear;

[0018] The second rotating shaft is provided with a ratchet, the first rotating disk is rotatably provided with a pawl, the pawl is engaged with the ratchet, and the first rotating disk is also provided with a spring sheet, the spring sheet presses the pawl onto the ratchet through elastic force.

[0019] As an optional solution of the fully automatic cutting CNC machine tool described in the present invention, wherein: the reciprocating mechanism includes a second turntable rotatably arranged on the machine tool, and a second sliding rod is arranged at the edge of the second turntable;

[0020] The reciprocating mechanism also includes a second connecting rod and a second driving assembly, wherein both ends of the second connecting rod are respectively hinged to the second sliding rod and the sliding seat through a hinge shaft, and the second driving assembly is used to drive the second turntable to rotate, thereby causing the sliding seat and the metal tube to reciprocate.

[0021] As an optional solution of the fully automatic cutting CNC machine tool described in the present invention, the second driving component includes a second motor arranged on the machine tool, a fourth gear is arranged on the output shaft of the second motor, a fifth gear is arranged on the second turntable, and the fifth gear is meshed with the fourth gear.

[0022] As an optional solution of the fully automatic cutting CNC machine tool described in the present invention, the reciprocating mechanism further includes a stroke adjustment component, and the stroke adjustment component is used to adjust the stroke of the reciprocating movement of the metal tube according to the radius of the metal tube;

[0023] The stroke adjustment assembly includes a slide groove provided on the second rotating disk, the second sliding rod is slidably connected to the slide groove, and a third sliding rod is slidably provided at the center of the second rotating disk;

[0024] The stroke adjustment assembly also includes a third connecting rod, and two ends of the third connecting rod are respectively movably hinged to the second sliding rod and the third sliding rod through hinge shafts.

[0025] As an optional solution of the fully automatic cutting CNC machine tool described in the present invention, wherein: a fourth sliding rod is slidably arranged on the machine tool, the third sliding rod is rotatably connected to the fourth sliding rod, a fourth connecting rod is rotatably arranged on the first sliding rod, and the fourth connecting rod is slidably connected to the fourth sliding rod.

[0026] The present invention has the following beneficial effects:

[0027] 1. This fully automatic cutting CNC machine tool is different from the prior art in which metal pipes are usually cut and shaped by a saw blade in one go. This device drives the slide seat on which the metal pipe is installed to move toward the cutting mechanism as a whole through reciprocating motion, so that the metal pipe and the saw blade are gradually cut through multiple contacts, and each reciprocating motion drives the metal pipe to rotate a certain angle in one direction, thereby completing multiple cutting and shaping of the metal pipe.

[0028] The cutting line formed by the saw blade when cutting the metal pipe is always uniform and short, which reduces the increased cutting difficulty caused by friction and the time to cut the same thickness, thereby reducing burrs and protrusions generated during the cutting process, facilitating later trimming, reducing wear on the saw blade, and extending the service life of the equipment.

[0029] 2. The clamping mechanism of this fully automatic cutting CNC machine tool consists of three clamping jaws that move radially based on a swivel seat, which can adapt to metal pipes with different radius sizes.

[0030] 3. When cutting metal tubes of different radius sizes, the fully automatic cutting CNC machine tool will also adjust the feedback of the clamping jaws to control the reciprocating travel of the metal tube and the angle of each indexing. When the radius of the metal tube is large, the reciprocating travel of the metal tube will be reduced, so that the cutting depth will be reduced each time the metal tube contacts the saw blade, further reducing the difficulty of cutting. At the same time, the corresponding angle of each indexing is reduced, increasing the number of multi-segment cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0032] Figure 2 It is a schematic cross-sectional structural diagram of the present invention as a whole.

[0033] Figure 3 For the present invention Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0034] Figure 4 For the present invention Figure 3 Schematic diagram of the local enlarged structure at point B in the middle.

[0035] Figure 5 It is a schematic cross-sectional structural diagram of the slide seat in the present invention.

[0036] Figure 6 It is a schematic diagram of the exploded structure of the clamping mechanism in the present invention.

[0037] Figure 7 It is a schematic diagram of the explosion structure of the cutting mechanism in the present invention.

[0038] Figure 8 It is a schematic diagram of the explosion structure of the transfer mechanism in the present invention.

[0039] Fig. 9 It is a schematic diagram of the explosion structure of the reciprocating mechanism in the present invention.

[0040] Fig.10 It is a schematic diagram of the working principle of the present invention.

[0041] In the figure: 100, machine tool; 200, cutting mechanism; 210, mounting frame; 220, first rotating shaft; 230, saw blade; 240, first motor; 250, belt transmission device; 300, slide seat; 400, clamping mechanism; 410, rotating seat; 420, clamping claw; 430, first driving assembly; 431, first slide rod; 432, first connecting seat; 433, second connecting seat; 434, first connecting rod; 435, cylinder; 436, third connecting seat; 500, metal pipe; 600, indexing mechanism; 610, second rotating shaft; 620, first gear; 63 0, rack; 640, one-way transmission assembly; 641, first turntable; 642, second gear; 643, third gear; 644, ratchet; 645, pawl; 646, spring sheet; 700, reciprocating mechanism; 710, second turntable; 720, second slide bar; 730, second connecting rod; 740, second drive assembly; 741, second motor; 742, fourth gear; 743, fifth gear; 750, stroke adjustment assembly; 751, slide slot; 752, third slide bar; 753, third connecting rod; 754, fourth slide bar; 755, fourth connecting rod. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0043] For example, see Figure 1-Figure 10 A fully automatic cutting CNC machine tool includes a machine tool 100 and a cutting mechanism 200. Two slide seats 300 are symmetrically slidably arranged on the machine tool 100. Both slide seats 300 are provided with clamping mechanisms 400. The two clamping mechanisms 400 are used to clamp a metal pipe 500.

[0044] The machine tool 100 is also symmetrically provided with two indexing mechanisms 600 and two reciprocating mechanisms 700. The reciprocating mechanisms 700 are used to drive the slide 300 and the metal pipe 500 to reciprocate along the cutting direction of the cutting mechanism 200.

[0045] In the process that the metal tube 500 moves toward the cutting mechanism 200 for the first time, when the metal tube 500 moves to the cutting mechanism 200, the metal tube 500 is cut by the cutting mechanism 200, and the length of the cut is smaller than the circumference of the metal tube 500;

[0046] While the metal tube 500 continues to reciprocate toward the cutting mechanism 200, the metal tube 500 is controlled by the indexing mechanism 600 to rotate first and then be cut;

[0047] The cutting mechanism 200 includes a mounting frame 210 arranged on the machine tool 100, on which a first rotating shaft 220 is rotatably arranged, on which a saw blade 230 is arranged, and on which a first motor 240 is also arranged. The output shaft of the first motor 240 is connected to the first rotating shaft 220 through a belt transmission device 250.

[0048] In this embodiment, the metal pipe 500 is a circular hollow pipe. In the prior art, the metal pipe 500 is cut once, and the resistance gradually increases during the cutting process, which makes the cutting more difficult. Especially when the metal pipe 500 is a large steel pipe with a large diameter, the cutting is very difficult. In order to realize the segmented cutting of the metal pipe 500 to reduce the cutting difficulty.

[0049] After the metal tube 500 is installed on the two clamping mechanisms 400, the two slides 300 are controlled by the reciprocating mechanism 700 to move the metal tube 500 to the right. At this time, the first motor 240 is running, and the first rotating shaft 220 and the saw blade 230 are driven to rotate through the belt transmission device 250. The belt transmission device 250 is composed of a belt and two pulleys.

[0050] The position where the metal pipe 500 stops when it moves to the end point on the right side is as follows: Fig.10 As shown in the figure, the saw blade 230 does not completely cut the metal pipe 500, but only cuts a portion of the right side of the metal pipe 500 to form a slit. Then the reciprocating mechanism 700 controls the metal pipe 500 to move to the left, and controls the metal pipe 500 to rotate a certain angle during the movement to the left, and then controls the metal pipe 500 to move to the right for a second cutting, and the slit of the second cutting overlaps with the slit of the first cutting. After multiple cuttings, the metal pipe 500 is completely cut into two parts.

[0051] Embodiment 2: This embodiment is an improvement on Embodiment 1. For details, please refer to Figure 1-Figure 8 The clamping mechanism 400 includes a rotating seat 410 rotatably disposed on the slide 300, and a plurality of clamping claws 420 are slidably disposed on the rotating seat 410, and the plurality of clamping claws 420 are equidistantly distributed on the rotating seat 410 in the circumferential direction;

[0052] The clamping mechanism 400 further includes a first driving assembly 430, which is used to drive a plurality of clamping jaws 420 to move radially based on the radial direction of the rotating seat 410 to clamp and position the metal pipe 500;

[0053] The first driving assembly 430 includes a first sliding rod 431 slidably disposed on the rotating seat 410 , a plurality of first connecting seats 432 are circumferentially disposed on the first sliding rod 431 , and a plurality of second connecting seats 433 are disposed on each of the plurality of clamping jaws 420 ;

[0054] The first driving assembly 430 also includes a plurality of first connecting rods 434, both ends of which are hinged to the first connecting seat 432 and the second connecting seat 433 through hinge shafts respectively, a cylinder 435 is arranged on the sliding seat 300, a third connecting seat 436 is arranged on the output shaft of the cylinder 435, and the first sliding rod 431 is rotatably connected to the third connecting seat 436.

[0055] In this embodiment: taking a group of clamping mechanisms 400 located at the front side as an example, the front side portion of the rotating seat 410 is cylindrical, and the rear side is in the shape of a disc. Three clamping claws 420 are slidably mounted on the disc portion based on three equidistant radii. When one end of the metal pipe 500 is placed on the rotating seat 410, the third connecting seat 436 and the three first connecting seats 432 are driven forward by the cylinder 435. At this time, the three first connecting rods 434 drive the three second connecting seats 433 and the three clamping claws 420 to move radially along the radial direction of the rotating seat 410 through transmission. The three clamping claws 420 move synchronously toward the center of the rotating seat 410, and the metal pipe 500 can be clamped in the middle position of the rotating seat 410, playing the role of clamping and positioning.

[0056] After the cutting is completed, the third connecting seat 436 is driven to move backward by the cylinder 435, so that the three clamping jaws 420 move synchronously in a direction away from the center of the rotating seat 410, so that the two sections of the metal pipe 500 are loosened.

[0057] It should be supplemented that the cylinder 435 can be controlled to open and close through a negative feedback adjustment mechanism or by installing a sensor on the clamp 420. After the three clamps 420 clamp the metal tube 500, the output shaft of the cylinder 435 stops extending further.

[0058] Embodiment 3: This embodiment is an improvement on Embodiment 2. For details, please refer to Figure 1-Figure 8 The indexing mechanism 600 includes a second rotating shaft 610 rotatably disposed on the slide 300, a first gear 620 is disposed on the second rotating shaft 610, a rack 630 is disposed on the machine tool 100, and the rack 630 is meshed with the first gear 620;

[0059] The indexing mechanism 600 further includes a one-way transmission assembly 640. Only when the metal tube 500 moves in a direction away from the cutting mechanism 200, the second rotating shaft 610 is transmission-connected to the rotating seat 410 through the one-way transmission assembly 640.

[0060] The one-way transmission assembly 640 includes a first rotating disk 641 rotatably disposed on the slide 300 , a second gear 642 is disposed on the first rotating disk 641 , a third gear 643 is disposed on the rotating base 410 , and the third gear 643 is meshed with the second gear 642 ;

[0061] A ratchet 644 is disposed on the second rotating shaft 610 , a pawl 645 is rotatably disposed on the first rotating disk 641 , the pawl 645 meshes with the ratchet 644 , and a spring sheet 646 is further disposed on the first rotating disk 641 , the spring sheet 646 presses the pawl 645 onto the ratchet 644 through elastic force.

[0062] In this embodiment, in order to achieve multi-segment cutting, it is necessary to control the metal tube 500 to rotate in a single direction at a certain angle during each reciprocating movement.

[0063] Taking the group of indexing mechanisms 600 located at the front side as an example, when the metal tube 500 and the slide seat 300 move to the right, the first gear 620 is driven by the rack 630 to rotate clockwise, and the second shaft 610 and the ratchet 644 also rotate clockwise. At this time, the direction of rotation of the ratchet 644 is consistent with the direction of the teeth of the pawl 645. The ratchet 644 can rotate clockwise without driving the pawl 645 and the first rotating disk 641. At this time, the pawl 645 will swing back and forth under the elastic force of the spring sheet 646. Therefore, the first rotating disk 641 does not rotate, and the rotating seat 410 will not rotate either. The position of the rotating seat 410 can be fixed to a certain extent by the friction between the components, and passive indexing will not occur due to displacement.

[0064] When the metal tube 500 moves to the left, the first gear 620 is driven by the rack 630 to rotate counterclockwise, and the ratchet 644 rotates counterclockwise accordingly. The pawl 645 and the ratchet 644 are stuck, and the ratchet 644 drives the two pawls 645 and the first rotating disk 641 to rotate counterclockwise, and the first rotating disk 641 and the second gear 642 rotate counterclockwise, driving the third gear 643 and the rotating seat 410 to rotate clockwise, so that the metal tube 500 actively rotates clockwise by a certain angle.

[0065] Embodiment 4: This embodiment is an improvement on Embodiment 3. For details, please refer to Figure 1-Figure 9 The reciprocating mechanism 700 includes a second turntable 710 rotatably disposed on the machine tool 100 , and a second slide bar 720 is disposed at the edge of the second turntable 710 ;

[0066] The reciprocating mechanism 700 further includes a second connecting rod 730 and a second driving assembly 740. Both ends of the second connecting rod 730 are respectively hinged to the second sliding rod 720 and the sliding seat 300 through a hinge shaft. The second driving assembly 740 is used to drive the second rotating disk 710 to rotate, thereby causing the sliding seat 300 and the metal pipe 500 to reciprocate.

[0067] The second driving assembly 740 includes a second motor 741 disposed on the machine tool 100 . A fourth gear 742 is disposed on the output shaft of the second motor 741 . A fifth gear 743 is disposed on the second rotary disk 710 . The fifth gear 743 meshes with the fourth gear 742 .

[0068] In this embodiment: the fourth gear 742 is driven by the second motor 741 to rotate clockwise, the fifth gear 743 is driven by the fourth gear 742 to rotate counterclockwise, the second turntable 710 rotates counterclockwise, and the second slide rod 720 and the second connecting rod 730 drive the slide seat 300 to reciprocate in the left and right directions.

[0069] Embodiment 5: This embodiment is an improvement made on the basis of Embodiment 4. For details, please refer to Figure 1-Figure 10 The reciprocating mechanism 700 further includes a stroke adjustment component 750, which is used to adjust the stroke of the reciprocating movement of the metal tube 500 according to the radius of the metal tube 500;

[0070] The stroke adjustment assembly 750 includes a slide groove 751 provided on the second rotating disk 710, the second sliding rod 720 is slidably connected in the slide groove 751, and a third sliding rod 752 is slidably provided at the center of the second rotating disk 710;

[0071] The stroke adjustment assembly 750 further includes a third connecting rod 753, both ends of which are respectively hinged to the second slide rod 720 and the third slide rod 752 through hinge shafts;

[0072] A fourth slide bar 754 is slidably provided on the machine tool 100 , the third slide bar 752 is rotatably connected to the fourth slide bar 754 , a fourth connecting rod 755 is rotatably provided on the first slide bar 431 , and the fourth connecting rod 755 is slidably connected to the fourth slide bar 754 .

[0073] In this embodiment: Fig.10 As shown in the lower side, when the radius of the metal pipe 500 is large, the saw blade 230 and the metal pipe 500 are only in contact for a short distance, the length of the cutting line will be large, and the cutting difficulty will increase. Fig.10 As shown in the upper side, when the radius of the metal pipe 500 decreases, the saw blade 230 needs to contact a longer distance to achieve the same cutting difficulty as the lower side. Therefore, according to the reduction of the radius of the metal pipe 500, the travel distance of the metal pipe 500 for reciprocating left and right can be appropriately increased.

[0074] The radius of the metal tube 500 is reduced, not only the slit is longer, but also the angle of each indexing should be increased, thereby reducing the number of multi-segment cutting times.

[0075] Specifically, taking a group of clamping mechanisms 400 and reciprocating mechanisms 700 located on the front side as an example, when the cylinder 435 controls the first slide bar 431 to move forward, if the radius of the metal tube 500 decreases, the distance that the cylinder 435 moves forward increases, and the distance that the fourth connecting rod 755, the fourth slide bar 754, and the third slide bar 752 are driven forward by the cylinder 435 increases.

[0076] The third slide bar 752 drives the second slide bar 720 to move along the slide slot 751 in a direction away from the center of the second rotating disk 710 through the transmission of the third connecting rod 753. The radius of the circular motion of the second slide bar 720 increases, and the left starting point of the metal tube 500 moves to the left and the right end point moves to the right. The metal tube 500 will have a longer contact distance with the saw blade 230.

[0077] Furthermore, as the travel distance between the metal tube 500 and the first gear 620 increases, the angle at which the first gear 620 is rotated by the rack 630 increases.

Claims

1. A fully automatic cutting CNC machine tool, comprising a machine tool (100) and a cutting mechanism (200), characterized in that: Two slide seats (300) are symmetrically slidably arranged on the machine tool (100), and a clamping mechanism (400) is arranged on each of the two slide seats (300). The two clamping mechanisms (400) are used to clamp the metal pipe (500); The machine tool (100) is also symmetrically provided with two indexing mechanisms (600) and two reciprocating mechanisms (700), wherein the reciprocating mechanisms (700) are used to drive the slide seat (300) and the metal pipe (500) to reciprocate along the cutting direction of the cutting mechanism (200); During the first movement of the metal tube (500) toward the cutting mechanism (200), when the metal tube (500) moves to the cutting mechanism (200), the metal tube (500) is cut by the cutting mechanism (200), and the length of the cut is less than the circumference of the metal tube (500); While the metal tube (500) continues to reciprocate toward the cutting mechanism (200), the metal tube (500) is controlled by the transfer mechanism (600) to rotate first and then be cut.

2. A fully automatic cutting CNC machine tool according to claim 1, characterized in that: The cutting mechanism (200) comprises a mounting frame (210) arranged on the machine tool (100); a first rotating shaft (220) is rotatably arranged on the mounting frame (210); a saw blade (230) is arranged on the first rotating shaft (220); a first motor (240) is also arranged on the mounting frame (210); an output shaft of the first motor (240) is transmission-connected to the first rotating shaft (220) via a belt transmission device (250).

3. The fully automatic cutting CNC machine tool according to claim 1, characterized in that: The clamping mechanism (400) comprises a rotating seat (410) rotatably arranged on the sliding seat (300), a plurality of clamping claws (420) being slidably arranged on the rotating seat (410), and the plurality of clamping claws (420) being equidistantly distributed on the rotating seat (410) in a circumferential direction; The clamping mechanism (400) further comprises a first driving assembly (430), wherein the first driving assembly (430) is used to drive a plurality of the clamping jaws (420) to move radially based on the radial direction of the rotating seat (410) so as to clamp and position the metal tube (500).

4. The fully automatic cutting CNC machine tool according to claim 3, characterized in that: The first driving assembly (430) comprises a first sliding rod (431) slidably arranged on the rotating seat (410), a plurality of first connecting seats (432) are circumferentially arranged on the first sliding rod (431), and a plurality of second connecting seats (433) are arranged on each of the clamping jaws (420); The first driving assembly (430) also includes a plurality of first connecting rods (434), the two ends of the first connecting rods (434) are respectively hinged to the first connecting seat (432) and the second connecting seat (433) through hinge shafts, a cylinder (435) is arranged on the sliding seat (300), a third connecting seat (436) is arranged on the output shaft of the cylinder (435), and the first sliding rod (431) is rotatably connected to the third connecting seat (436).

5. The fully automatic cutting CNC machine tool according to claim 3, characterized in that: The indexing mechanism (600) comprises a second rotating shaft (610) rotatably arranged on the slide seat (300), a first gear (620) being arranged on the second rotating shaft (610), a rack (630) being arranged on the machine tool (100), and the rack (630) being meshed with the first gear (620); The transfer mechanism (600) further comprises a one-way transmission assembly (640), and only when the metal tube (500) moves in a direction away from the cutting mechanism (200), the second rotating shaft (610) is transmission-connected to the rotating seat (410) through the one-way transmission assembly (640).

6. The fully automatic cutting CNC machine tool according to claim 5, characterized in that: The one-way transmission assembly (640) comprises a first rotating disk (641) rotatably disposed on the sliding seat (300), a second gear (642) being disposed on the first rotating disk (641), a third gear (643) being disposed on the rotating seat (410), and the third gear (643) being meshed with the second gear (642); A ratchet (644) is arranged on the second rotating shaft (610), a pawl (645) is rotatably arranged on the first rotating disk (641), the pawl (645) is meshed with the ratchet (644), and a spring sheet (646) is also arranged on the first rotating disk (641), and the spring sheet (646) presses the pawl (645) onto the ratchet (644) through elastic force.

7. The fully automatic cutting CNC machine tool according to claim 4, characterized in that: The reciprocating mechanism (700) comprises a second rotating disk (710) rotatably arranged on the machine tool (100), and a second sliding rod (720) is arranged at the edge of the second rotating disk (710); The reciprocating mechanism (700) further comprises a second connecting rod (730) and a second driving assembly (740), wherein both ends of the second connecting rod (730) are respectively hinged to the second sliding rod (720) and the sliding seat (300) through hinge shafts, and the second driving assembly (740) is used for driving the second turntable (710) to rotate, thereby causing the sliding seat (300) and the metal tube (500) to reciprocate.

8. The fully automatic cutting CNC machine tool according to claim 7, characterized in that: The second driving assembly (740) comprises a second motor (741) arranged on the machine tool (100); a fourth gear (742) is arranged on the output shaft of the second motor (741); a fifth gear (743) is arranged on the second rotating disk (710); and the fifth gear (743) is meshed with the fourth gear (742).

9. The fully automatic cutting CNC machine tool according to claim 7, characterized in that: The reciprocating mechanism (700) further comprises a stroke adjustment component (750), wherein the stroke adjustment component (750) is used to adjust the stroke of the reciprocating movement of the metal tube (500) according to the radius of the metal tube (500); The stroke adjustment component (750) comprises a slide groove (751) provided on the second rotating disk (710), the second sliding rod (720) is slidably connected in the slide groove (751), and a third sliding rod (752) is slidably arranged at the center of the second rotating disk (710); The stroke adjustment assembly (750) further comprises a third connecting rod (753), and two ends of the third connecting rod (753) are respectively hinged to the second sliding rod (720) and the third sliding rod (752) through hinge shafts.

10. The fully automatic cutting CNC machine tool according to claim 9, characterized in that: A fourth slide bar (754) is slidably arranged on the machine tool (100), the third slide bar (752) is rotatably connected to the fourth slide bar (754), a fourth connecting rod (755) is rotatably arranged on the first slide bar (431), and the fourth connecting rod (755) is slidably connected to the fourth slide bar (754).

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