Five-axis CNC machining center

Abstract

The present invention discloses a five-axis CNC machining center, which relates to the technical field of machining centers and includes a machine base, a first transmission assembly, a second transmission assembly, and a third transmission assembly. A first door panel and a second door panel are synchronously and vertically slidably connected to the machine base. A first carrier plate and a second carrier plate are horizontally reciprocatingly slidably connected to the machine base. A clamping block is rotatably connected to each of the first carrier plate and the second carrier plate through a linkage assembly. A clamping mechanism is vertically slidably connected inside the machine base. The first transmission assembly receives the drive of the vertical sliding of the first door panel to horizontally reciprocate the first carrier plate. The second transmission assembly receives the drive of the vertical upward movement of the second door panel to horizontally reciprocate the second carrier plate. The third transmission assembly receives the drive of the horizontal sliding of the second carrier plate to vertically slide the clamping mechanism. This invention can achieve changing an overly heavy workpiece from a horizontal state to a vertical state, making the machining efficiency of the workpiece end face more efficient.

Description

Technical Field

[0001] The invention relates to the technical field of machining centers, in particular to a five-axis CNC machining center. Background Art

[0002] The CNC machining center is a high-efficiency automated machine tool composed of mechanical equipment and CNC systems, which is suitable for processing complex parts. The CNC machining center is one of the CNC machine tools with the highest output and the most extensive application in the world. It has strong comprehensive processing capabilities, can complete more processing content after the workpiece is clamped once, and has high processing accuracy. The five-axis linkage CNC machining center system is the only means to solve the processing of impellers, blades, marine propellers, heavy generator rotors, turbine rotors, large diesel engine crankshafts, etc.

[0003] For example, the Chinese patent with publication number CN117428485A and titled "A Multifunctional Five-Axis CNC Machining Center" includes a processing table, an axially movable table top is arranged at the inner bottom end of the processing table, four sets of dovetail electric sliding rails are arranged on the surface of the axially movable table top, and the four sets of dovetail electric sliding rails are internally slidably connected with a cleaning component. By cooperating with the cleaning component, the processing component and the clamping base component, using a laser locator, a laser interferometer tracker and a three-dimensional position sensor, when there is a height difference on the surface of the part under the action of the force resistance end, part of the vibrating cleaning head is driven to be forced to retract to the inside of the cavity connection end, so that the vibrating cleaning head forms a shape fit with the surface of the connected part, and the chips accumulated in the bottom concave part of the curved surface generated during or after the CNC machining process can be cleaned in real time, thereby improving the overall machining accuracy and reducing the influence of chips on the machining efficiency when machining complex curved surfaces.

[0004] Although the multifunctional five-axis CNC machining center in the above patent is practical and convenient, it also has its shortcomings. During the production process of the above device, if the weight of the workpiece to be processed is too heavy, it is difficult to change the workpiece from a horizontal state to a vertical state, causing the processing mechanism to process the end face of the workpiece into an impeller, etc., and it is difficult to align the clamping mechanism, which makes the workpiece prone to wear during the alignment and clamping process. The clamping of the parts before processing requires a lot of time, and the overall processing efficiency is low. Summary of the invention

[0005] The purpose of the present invention is to provide a five-axis CNC machining center to solve the deficiencies in the above-mentioned prior art.

[0006] To achieve the above object, the present invention provides the following technical solution: The five-axis CNC machining center includes a machine base, a first transmission assembly, a second transmission assembly, and a third transmission assembly. A first door panel and a second door panel are synchronously and vertically slidably connected to the machine base. A first carrier plate and a second carrier plate are horizontally reciprocatingly slidably connected to the machine base. A clamping block is rotatably connected to each of the first carrier plate and the second carrier plate through a linkage assembly. A clamping mechanism is vertically slidably connected inside the machine base. The first transmission assembly receives the drive of the vertical sliding of the first door panel to horizontally reciprocate the first carrier plate. The second transmission assembly receives the drive of the vertical upward movement of the second door panel to horizontally reciprocate the second carrier plate. The third transmission assembly receives the drive of the horizontal sliding of the second carrier plate to vertically slide the clamping mechanism.

[0007] Further, the first transmission assembly includes a first cylinder, a second cylinder, and a connecting rod. The first cylinder and the second cylinder are respectively arranged on one side of the first carrier plate and the first door panel. The two ends of the connecting rod are respectively rotatably sleeved with the first cylinder and the second cylinder.

[0008] Further, a third slider is provided at the bottom of the first carrier plate. A third chute is opened inside the machine base. The third slider is slidably connected in the third chute. The cross-sections of the third slider and the third chute are both inverted T-shaped.

[0009] Further, the second transmission assembly includes a rotating rod, a second slider, and a protrusion. A rotating rod is rotatably connected inside the machine base. Two spiral grooves connected end to end are opened on the rotating rod. The second slider is slidably sleeved on the rotating rod. The protrusion is arranged inside the rotating rod. Both spiral grooves can slidably cooperate with the protrusion. The top of the second slider is fixedly connected to the bottom of the second carrier plate. An adjusting mechanism is provided between the rotating rod and the second door panel.

[0010] Further, the adjusting mechanism includes a second rack, a gear ring meshing with the second rack, a ratchet wheel, a pawl meshing with the ratchet wheel, a second rotating shaft, a torsion spring, and a turntable. The second rack is fixedly connected to one side of the second door panel. The gear ring is rotatably connected inside the machine base. The ratchet wheel is arranged on the inner wall of the gear ring and is integrally formed with the gear ring. The turntable is rotatably connected inside the ratchet wheel. The second rotating shaft is arranged inside the turntable. The pawl is rotatably sleeved on the second rotating shaft. A torsion spring is arranged between the pawl and the second rotating shaft. A groove is opened on the turntable. The pawl is rotatably connected in the groove. One end of the rotating rod is coaxially fixedly connected to one end of the turntable.

[0011] Further, the third transmission component includes a bracket and a pushing block. The bottom of the second slider is fixedly connected to the pushing block through the bracket. A butting block is provided at the bottom of the clamping mechanism. A fourth chute and a fifth chute communicating with the fourth chute are formed in the machine base. The fourth chute is vertically arranged, and the fifth chute is horizontally arranged. The bottom end of the butting block is inclined, and the pushing block is in sliding butting fit with the butting block.

[0012] Further, both of the linkage components include a first rotating shaft, a gear, and a first rack engaged with the gear. The two first rotating shafts are respectively rotatably connected in the first carrier plate and the second carrier plate. The two gears are respectively sleeved on the two first rotating shafts. The two first racks are both arranged in the machine base. The two clamping blocks are respectively sleeved on the two first rotating shafts.

[0013] Further, a first chute is formed in the first carrier plate. A first slider is slidably connected in the first chute. The first rotating shaft on the first carrier plate is rotatably connected in the first slider. A stop block is provided in the machine base. The stop block is in butting fit with the first slider. An elastic member is provided between the first slider and the inner wall of the first chute.

[0014] Further, the elastic member includes a telescopic column and a spring. The spring is sleeved on the telescopic column. The two ends of the spring are respectively fixedly connected to the inner wall of the first chute and the first slider. The two ends of the telescopic column are respectively fixedly connected to the inner wall of the first chute and the first slider.

[0015] Further, a cylinder is provided at the top of the machine base. The output end of the cylinder is fixedly connected to a connecting plate. The tops of the first door panel and the second door panel are both fixedly connected to the bottom of the connecting plate.

[0016] Compared with the prior art, the beneficial effects provided by the present invention are as follows: The five-axis CNC center lifts the first door panel and the second door panel. During the process of the second door panel moving upward, the second carrier plate reciprocates back and forth through the second transmission component. When the clamping block on the second carrier plate moves towards the clamping mechanism, it rotates 90° through the linkage component and clamps the machined workpiece vertically arranged on the clamping mechanism. When the clamping block on the second carrier plate moves away from the clamping mechanism, the workpiece is transported out horizontally through the reverse rotation of the linkage component by 90°. During the process of the first door panel moving upward, the first carrier plate moves towards the clamping mechanism through the first transmission component. When the clamping block on the first carrier plate moves towards the clamping mechanism, it rotates 90° through the linkage component to make the workpiece vertical. At the same time, the second carrier plate moves away from the first carrier plate, and the clamping mechanism moves upward through the third transmission component to clamp the workpiece to be machined on the clamping block of the first carrier plate. This can greatly shorten the clamping time before processing, and during the process of machining parts, the workpiece to be machined can be initially clamped, and the machined parts can be unloaded, improving the processing efficiency. At the same time, it avoids wear between the workpiece and the device due to inaccurate alignment during the clamping process. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0018] Figure 1 Overall structural schematic diagram provided by an embodiment of the present invention;

[0019] Figure 2 Upper view of the overall structure provided by an embodiment of the present invention;

[0020] Figure 3 is Figure 2 Cross-sectional view taken along line A-A in

[0021] Figure 4 is Figure 3 Cross-sectional view taken along line D-D in

[0022] Figure 5 is Figure 4 Enlarged view at E in

[0023] Figure 6 is Figure 2 Cross-sectional view taken along line B-B in

[0024] Figure 7 is Figure 2 Cross-sectional view taken along line C-C in

[0025] Figure 8 is Figure 7 a sectional view taken along line F-F in the middle;

[0026] Figure 9 is a schematic diagram of a partial structure provided by an embodiment of the present invention.

[0027] Explanation of reference numerals: 1, machine base; 2, first door panel; 3, second door panel; 4, first carrier plate; 5, second carrier plate; 6, first rotating shaft; 7, gear; 8, clamping block; 9, first slider; 10, stop block; 11, first rack; 12, first cylinder; 13, second cylinder; 14, connecting rod; 15, second rack; 16, gear ring; 17, ratchet wheel; 18, ratchet pawl; 19, second rotating shaft; 20, torsion spring; 21, groove; 22, turntable; 23, rotating rod; 24, spiral groove; 25, second slider; 26, protrusion; 27, bracket; 28, pushing block; 29, abutting block; 30, clamping mechanism; 31, second chute; 32, fourth chute; 33, fifth chute; 34, spring; 35, telescopic column; 36, first chute; 37, connecting plate; 38, cylinder; 39, third slider; 40, third chute; 41, workpiece; 42, processing mechanism. Detailed implementation manners

[0028] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further introduced in detail below in conjunction with the accompanying drawings.

[0029] Please refer to Figures 1-9, a technical solution provided by an embodiment of the present invention: The five-axis CNC machining center includes a machine base 1, a first transmission assembly, a second transmission assembly, and a third transmission assembly. A first door panel 2 and a second door panel 3 are synchronously and vertically slidably connected to the machine base 1. A first carrier plate 4 and a second carrier plate 5 are horizontally reciprocally slidably connected to the machine base 1. A clamping block 8 is rotatably connected to both the first carrier plate 4 and the second carrier plate 5 through a linkage assembly. A clamping mechanism 30 is vertically slidably connected inside the machine base 1. The first transmission assembly receives the drive of the vertical sliding of the first door panel 2 to make the first carrier plate 4 horizontally reciprocate. The second transmission assembly receives the drive of the vertical upward movement of the second door panel 3 to make the second carrier plate 5 horizontally reciprocate. The third transmission assembly receives the drive of the horizontal sliding of the second carrier plate 5 to make the clamping mechanism 30 vertically slide. Specifically, a machining mechanism 42 is arranged inside the machine base 1 for machining a workpiece 41. The moving speed of the first carrier plate 4 is slower than that of the second carrier plate 5. When the second carrier plate 5 reciprocates back and forth once, the first carrier plate 4 starts to move away from the clamping mechanism 30, lifting the first door panel 2 and the second door panel 3. During the upward movement of the second door panel 3, the second carrier plate 5 reciprocates back and forth once through the second transmission assembly. During the process of the clamping block 8 on the second carrier plate 5 moving towards the clamping mechanism 30, it rotates 90° through the linkage assembly and clamps the machined workpiece 41 vertically arranged on the clamping mechanism 30. During the process of the clamping block 8 on the second carrier plate 5 moving away from the clamping mechanism 30, it reversely rotates 90° through the linkage assembly to transport the workpiece 41 in a horizontal state out. During the upward movement of the first door panel 2, the first carrier plate 4 moves towards the clamping mechanism 30 through the first transmission assembly. During the process of the clamping block 8 on the first carrier plate 4 moving towards the clamping mechanism 30, it rotates 90° through the linkage assembly to make the workpiece 41 in a vertical state. At the same time, the second carrier plate 5 moves away from the first carrier plate 4, and the clamping mechanism moves upward through the third transmission assembly to clamp the workpiece 41 to be machined on the clamping block 8 on the first carrier plate 4. It can greatly shorten the clamping time before machining, and can initially clamp the workpiece to be machined and unload the machined workpiece during the process of machining parts, improving the machining efficiency. At the same time, it avoids wear between the workpiece 41 and the device due to inaccurate alignment during the alignment and clamping process.

[0030] As a preferred technical solution, the first transmission assembly includes a first cylinder 12, a second cylinder 13, and a connecting rod 14. The first cylinder 12 and the second cylinder 13 are respectively arranged on one side of the first carrier plate 4 and the first door panel 2. The two ends of the connecting rod 14 are respectively rotatably sleeved with the first cylinder 12 and the second cylinder 13. Specifically, when the first door panel 2 is lifted, due to the fixed length of the connecting rod 14, as the height of the first cylinder 12 is lifted, the horizontal position of the first cylinder 12 remains unchanged, causing the horizontal position of the second cylinder 13 to change. The connecting rod 14 drives the first carrier plate 4 to horizontally displace through the second cylinder 13.

[0031] As a preferred technical solution, a third slider 39 is provided at the bottom of the first carrier plate 4, and a third sliding groove 40 is formed in the machine base 1. The third slider 39 is slidably connected in the third sliding groove 40. The cross-sections of the third slider 39 and the third sliding groove 40 are both inverted T-shaped. Specifically, the third sliding groove 40 is horizontally arranged. Through the horizontal sliding fit of the third slider 39 in the third sliding groove 40, the displacement of the first carrier plate 4 in the vertical direction is avoided. At the same time, the cooperation between the third slider 39 and the third sliding groove 40 plays a guiding role, enabling the first carrier plate 4 to perform a horizontal linear motion.

[0032] As a preferred technical solution, the second transmission assembly includes a rotating rod 23, a second slider 25, and a protrusion 26. A rotating rod 23 is rotatably connected in the machine base 1. Two helical grooves 24 connected end to end are formed on the rotating rod 23. The second slider 25 is slidably sleeved on the rotating rod 23. The protrusion 26 is arranged inside the rotating rod 23. Both helical grooves 24 can be slidably matched with the protrusion 26. The top of the second slider 25 is fixedly connected to the bottom of the second carrier plate 5. An adjusting mechanism is provided between the rotating rod 23 and the second door panel 3. Specifically, the adjusting mechanism includes a second rack 15, a gear ring 16 meshing with the second rack 15, a ratchet wheel 17, a pawl 18 meshing with the ratchet wheel 17, a second rotating shaft 19, a torsion spring 20, and a turntable 22. The second rack 15 is fixedly connected to one side of the second door panel 3. The gear ring 16 is rotatably connected in the machine base 1. The ratchet wheel 17 is arranged on the inner wall of the gear ring 16 and is integrally formed with the gear ring 16. The turntable 22 is rotatably connected in the ratchet wheel 17. The second rotating shaft 19 is passed through the turntable 22. The pawl 18 is rotatably sleeved on the second rotating shaft 19. A torsion spring 20 is arranged between the pawl 18 and the second rotating shaft 19. A groove 21 is formed on the turntable 22. The pawl 18 is rotatably connected in the groove 21. One end of the rotating rod 23 is coaxially fixedly connected to one end of the turntable 22. When the second door panel 3 drives the second rack 15 to move upward, through the meshing transmission of the second rack 15 and the gear ring 16, the gear ring 16 is driven to rotate. Through the elastic deformation of the torsion spring 20, the ratchet wheel 17 and the pawl 18 are matched with each other, driving the turntable 22 to rotate. The turntable 22 drives the rotating rod 23 to rotate. Through the sliding fit between the protrusion 26 and the two helical grooves 24, the second slider 25 can be driven to reciprocate along the length direction of the rotating rod 23. At the same time, a second sliding groove 31 is formed in the machine base 1. The second slider 25 is slidably connected in the second sliding groove 31. The second sliding groove 31 restricts the circumferential rotation of the second slider 25. When the second door panel 3 moves downward, the second rack 15 drives the gear ring 16 to rotate in the reverse direction. The ratchet wheel 17 rotates in the reverse direction with the gear ring 16 and is not meshed with the pawl 18, so the turntable 22 is not driven to rotate. At this time, the second carrier plate 5 has moved to the initial position.

[0033] As a preferred technical solution, the third transmission assembly includes a bracket 27 and a pushing block 28. The bottom of the second slider 25 is fixedly connected to the pushing block 28 through the bracket 27. A butting block 29 is provided at the bottom of the clamping mechanism 30. A fourth chute 32 and a fifth chute 33 communicating with the fourth chute 32 are formed in the machine base 1. The fourth chute 32 is vertically arranged, and the fifth chute 33 is horizontally arranged. The bottom end of the butting block 29 is inclined. The pushing block 28 is in sliding butt joint with the butting block 29. Specifically, when the second slider 25 drives the second carrier plate 5 to move towards the clamping mechanism 30, the pushing block 28 is moved away from the butting block 29 through the bracket 27. Since the bottom end of the butting block 29 is inclined, the butting block 29 moves down in the fourth chute 32, driving the clamping mechanism 30 to move down at the same time. Meanwhile, the processed workpiece 41 on the clamping mechanism 30 moves down, enabling the clamping block 8 on the second carrier plate 5 to clamp the middle part of the processed workpiece 41, avoiding unstable clamping.

[0034] As a preferred technical solution, both linkage assemblies include a first rotating shaft 6, a gear 7, and a first rack 11 meshing with the gear 7. The two first rotating shafts 6 are respectively rotatably connected in the first carrier plate 4 and the second carrier plate 5. The two gears 7 are respectively sleeved on the two first rotating shafts 6. The two first racks 11 are both arranged in the machine base 1. The two clamping blocks 8 are respectively sleeved on the two first rotating shafts 6. Specifically, during the movement of the two clamping blocks 8, through the meshing transmission of the corresponding gear 7 and the corresponding first rack 11, the clamped workpiece 41 is converted between the horizontal and vertical states.

[0035] As a preferred technical solution, a first sliding groove 36 is formed in the first carrier plate 4. A first sliding block 9 is slidably connected in the first sliding groove 36. A first rotating shaft 6 on the first carrier plate 4 is rotatably connected in the first sliding block 9. A stop block 10 is provided in the machine base 1. The stop block 10 is in abutting cooperation with the first sliding block 9. An elastic member is provided between the first sliding block 9 and the inner wall of the first sliding groove 36. Specifically, the elastic member includes a telescopic column 35 and a spring 34. The spring 34 is sleeved on the telescopic column 35. Two ends of the spring 34 are respectively fixedly connected with the inner wall of the first sliding groove 36 and the first sliding block 9. Two ends of the telescopic column 35 are respectively fixedly connected with the inner wall of the first sliding groove 36 and the first sliding block 9. During the process that the first carrier plate 4 drives the first sliding block 9 to move towards the clamping mechanism 30, the clamping block 8 drives the workpiece 41 clamped by the clamping block 8 on the first carrier plate 4 to change from a horizontal state to a vertical state through the meshing transmission of the gear 7 and the first rack 11. When the first sliding block 9 abuts against the stop block 10, the position of the workpiece 41 in the horizontal direction remains unchanged. At this time, the workpiece 41 to be processed is directly above the clamping mechanism 30. The cooperation between the spring 34 and the telescopic column 35 causes a relative displacement between the first carrier plate 4 and the workpiece 41 in the horizontal direction. At this time, the second sliding block 25 slides away from the clamping mechanism 30, drives the pusher to slide towards the clamping mechanism 30 through the bracket 27. Through the sliding abutment between the pusher block 28 and the abutting block 29, the abutting block 29 drives the clamping mechanism 30 to move upward, clamps the bottom end of the workpiece 41 to be processed, and facilitates the processing mechanism 42 to process the top end of the workpiece 41 to be processed.

[0036] As a preferred technical solution, a cylinder 38 is provided at the top of the machine base 1. The output end of the cylinder 38 is fixedly connected with a connecting plate 37. The tops of the first door panel 2 and the second door panel 3 are both fixedly connected with the bottom of the connecting plate 37. Specifically, the cylinder 38 drives the connecting plate 37 to move vertically, and drives the first door panel 2 and the second door panel 3 to move vertically synchronously through the connecting plate 37.

[0037] Working principle: The five-axis CNC center raises the first door panel 2 and the second door panel 3 through the cylinder 38. During the upward movement of the second door panel 3, the second door panel 3 drives the second rack 15 to move upward. Through the meshing transmission between the second rack 15 and the gear ring 16, the gear ring 16 is driven to rotate. Through the elastic deformation of the torsion spring 20, the ratchet wheel 17 cooperates with the ratchet pawl 18 to drive the turntable 22 to rotate. The turntable 22 drives the rotating rod 23 to rotate. Through the sliding fit between the protrusion 26 and the two spiral grooves 24, the second slider 25 can be driven to slide reciprocally along the length direction of the rotating rod 23. At the same time, a second chute 31 is opened in the machine base 1, and the second slider 25 is slidably connected in the second chute 31. The second chute 31 restricts the circumferential rotation of the second slider 25. During the process of the clamping block 8 on the second carrier plate 5 moving towards the clamping mechanism 30, it rotates 90° through the cooperation between the corresponding gear 7 and the first rack 11. Through the support 27, the push block 28 moves away from the abutting block 29. Since the bottom end of the abutting block 29 is inclined, the abutting block 29 moves downward in the fourth chute 32, driving the clamping mechanism 30 to move downward at the same time. At the same time, the processed workpiece 41 on the clamping mechanism 30 moves downward, so that the clamping block 8 on the second carrier plate 5 can clamp the middle part of the processed workpiece 41, avoiding unstable clamping. During the process of the clamping block 8 on the second carrier plate 5 moving away from the clamping mechanism 30, it reversely rotates 90° through the cooperation between the corresponding gear 7 and the first rack 11 to transport the workpiece 41 in a horizontal state. During the upward movement of the first door panel 2, since the length of the connecting rod 14 remains unchanged, as the height of the first cylinder 12 rises, the horizontal position of the first cylinder 12 remains unchanged, causing the horizontal position of the second cylinder 13 to change. The connecting rod 14 drives the first carrier plate 4 through the second cylinder 13, and the first carrier plate 4 moves towards the clamping mechanism 30. During the process of the clamping block 8 on the first carrier plate 4 moving towards the clamping mechanism 30, it rotates 90° through the cooperation between the corresponding gear 7 and the first rack 11 to make the workpiece 41 in a vertical state, facilitating the machining of one end of the workpiece 41. When the first slider 9 abuts against the stop block 10, the horizontal position of the workpiece 41 to be machined remains unchanged. At this time, the workpiece 41 to be machined is directly above the clamping mechanism 30. Through the cooperation between the spring 34 and the telescopic column 35, a relative displacement occurs between the first carrier plate 4 and the workpiece 41 in the horizontal direction. At the same time, the second carrier plate 5 moves away from the first carrier plate 4. At this time, the second slider 25 slides away from the clamping mechanism 30, drives the push through the support 27 to slide towards the clamping mechanism 30. Through the sliding contact between the push block 28 and the abutting block 29, the abutting block 29 drives the clamping mechanism 30 to move upward. And during the downward movement of the first door panel 2 and the second door panel 3, the first carrier plate 4 moves reversely to reset. During the downward movement of the second door panel 3, the second rack 15 drives the gear ring 16 to reverse. The ratchet wheel 17 reverses with the gear ring 16 and does not engage with the ratchet pawl 18, so it does not drive the turntable 22 to rotate. At this time, the second carrier plate 5 has moved to the initial position to clamp the bottom end of the workpiece 41 to be machined.It can greatly shorten the clamping time before subcontracting processing, and during the process of machining parts, it can initially clamp the parts to be machined and unload the machined parts, improving the processing efficiency. At the same time, during the alignment clamping process, due to inaccurate alignment, wear between the workpiece 41 and the device can be avoided.

[0038] Only some exemplary embodiments of the present invention have been described by way of illustration. Without doubt, for those of ordinary skill in the art, various different ways can be used to modify the described embodiments without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A five-axis CNC machining center, comprising a machine base (1), on which a first door panel (2) and a second door panel (3) are synchronously and vertically slidably connected, a first carrier plate (4) and a second carrier plate (5) are horizontally reciprocatingly slidably connected on the machine base (1), a clamping block (8) is rotatably connected to each of the first carrier plate (4) and the second carrier plate (5) through a linkage assembly, and a clamping mechanism (30) is vertically slidably connected in the machine base (1), characterized in that, Further comprising: A first transmission assembly that receives the drive of the vertical sliding of the first door panel (2) to horizontally reciprocate the first carrier plate (4). The first transmission assembly includes a first cylinder (12), a second cylinder (13), and a connecting rod (14). The first cylinder (12) and the second cylinder (13) are respectively arranged on one side of the first carrier plate (4) and the first door panel (2). The two ends of the connecting rod (14) are respectively rotatably sleeved with the first cylinder (12) and the second cylinder (13); A second transmission assembly that receives the drive of the vertical upward movement of the second door panel (3) to horizontally reciprocate the second carrier plate (5). The second transmission assembly includes a rotating rod (23), a second slider (25), and a protrusion (26). A rotating rod (23) is rotatably connected in the machine base (1). Two helical grooves (24) connected end to end are formed on the rotating rod (23). The second slider (25) is slidably sleeved on the rotating rod (23). The protrusion (26) is arranged inside the rotating rod (23). Both of the two helical grooves (24) can slidably cooperate with the protrusion (26). The top of the second slider (25) is fixedly connected to the bottom of the second carrier plate (5). An adjusting mechanism is provided between the rotating rod (23) and the second door panel (3). The sliding cooperation between the protrusion (26) and the two helical grooves (24) can drive the second slider (25) to reciprocate along the length direction of the rotating rod (23). The adjusting mechanism includes a second rack (15), a gear ring (16) meshing with the second rack (15), a ratchet wheel (17), a pawl (18) meshing with the ratchet wheel (17), a second rotating shaft (19), a torsion spring (20), and a turntable (22). The second rack (15) is fixedly connected to one side of the second door panel (3). The gear ring (16) is rotatably connected in the machine base (1). The ratchet wheel (17) is arranged on the inner wall of the gear ring (16) and is integrally formed with the gear ring (16). The turntable (22) is rotatably connected inside the ratchet wheel (17). The second rotating shaft (19) penetrates through the turntable (22). The pawl (18) is rotatably sleeved on the second rotating shaft (19). A torsion spring (20) is arranged between the pawl (18) and the second rotating shaft (19). A groove (21) is formed on the turntable (22). The pawl (18) is rotatably connected in the groove (21). One end of the rotating rod (23) is coaxially fixedly connected to one end of the turntable (22); The third transmission assembly receives the drive of the horizontal sliding of the second carrier plate (5) to vertically slide the clamping mechanism (30). The third transmission assembly includes a bracket (27) and a pushing block (28). The bottom of the second slider (25) is fixedly connected to the pushing block (28) through the bracket (27). A butting block (29) is provided at the bottom of the clamping mechanism (30). A fourth chute (32) and a fifth chute (33) communicating with the fourth chute (32) are formed in the machine base (1). The fourth chute (32) is vertically arranged, and the fifth chute (33) is horizontally arranged. The bottom end of the butting block (29) is inclined, and the pushing block (28) is in sliding butt joint with the butting block (29). Both of the linkage assemblies include a first rotating shaft (6), a gear (7), and a first rack (11) meshing with the gear (7). The two first rotating shafts (6) are respectively rotatably connected in the first carrier plate (4) and the second carrier plate (5). The two gears (7) are respectively sleeved on the two first rotating shafts (6). The two first racks (11) are both arranged in the machine base (1). The two clamping blocks (8) are respectively sleeved on the two first rotating shafts (6).

2. The five-axis CNC machining center according to claim 1, characterized in that, A third slider (39) is provided at the bottom of the first carrier plate (4). A third chute (40) is formed in the machine base (1). The third slider (39) is slidably connected in the third chute (40). The cross-sections of the third slider (39) and the third chute (40) are both inverted T-shaped.

3. A five-axis CNC machining center according to claim 1, characterized in that, A first chute (36) is formed in the first carrier plate (4). A first slider (9) is slidably connected in the first chute (36). The first rotating shaft (6) on the first carrier plate (4) is rotatably connected in the first slider (9). A stop block (10) is provided in the machine base (1). The stop block (10) is in butt joint with the first slider (9). An elastic member is provided between the first slider (9) and the inner wall of the first chute (36).

4. A five-axis CNC machining center according to claim 3, characterized in that, The elastic member includes a telescopic column (35) and a spring (34). The spring (34) is sleeved on the telescopic column (35). The two ends of the spring (34) are respectively fixedly connected to the inner wall of the first chute (36) and the first slider (9). The two ends of the telescopic column (35) are respectively fixedly connected to the inner wall of the first chute (36) and the first slider (9).

5. A five-axis CNC machining center according to claim 1, characterized in that, A cylinder (38) is provided at the top of the machine base (1). The output end of the cylinder (38) is fixedly connected to a connecting plate (37). The tops of the first door panel (2) and the second door panel (3) are both fixedly connected to the bottom of the connecting plate (37).

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