A device for precisely cutting metal profiles

Abstract

The present invention discloses a device for accurately cutting metal profiles, which belongs to the technical field of profile cutting and comprises a clamping mechanism for clamping metal profiles, wherein the clamping mechanism is provided with a pushing mechanism for pushing the metal profile to move and a cutting mechanism for cutting the metal profile; the clamping mechanism provided in the present invention can effectively clamp the side and upper and lower surfaces of the metal profile, and position the metal profile through a push plate, so that the metal profile is accurately positioned when being cut, thereby improving the cutting accuracy of the metal profile; if the cutting mechanism provided in the present invention vibrates when cutting the metal profile, the rotating outer ring will push the vibrating sliding column and the vibrating frame to vibrate up and down along the movable frame through the fitting wheel, and the vibration is detected by a vibration sensor. When the vibration is too large, the rotation speed of the cutting motor and the feed motor is reduced, thereby improving the cutting stability and thus improving the cutting accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of profile cutting, and in particular to a device for accurately cutting metal profiles. Background Art

[0002] A precision metal profile cutting device is a device used for precisely cutting metal profiles. The main purpose of this device is to ensure the accuracy, smoothness, and dimensional consistency of metal profile cutting through high-precision cutting technology and equipment. Precision metal profile cutting devices are widely used in many fields such as machinery manufacturing, construction engineering, automobile manufacturing, aerospace, etc. Among them, the precision sawing device uses a high-precision sawing machine and saw blade for cutting. It is usually equipped with a CNC system, which can perform automated cutting operations as required to ensure dimensional accuracy and efficiency. The metal profile cutting device in the prior art usually jitters when cutting the profile, thereby affecting the cutting accuracy. Summary of the Invention

[0003] In response to the above technical problems, the present invention adopts the following technical solutions: a device for accurately cutting metal profiles, comprising a clamping mechanism for clamping the metal profiles, the clamping mechanism comprising a main frame provided with a cutting groove, the clamping mechanism being provided with a pushing mechanism for pushing the metal profiles to move and a cutting mechanism for cutting the metal profiles, the pushing mechanism comprising a pushing motor fixedly mounted on the main frame, the cutting mechanism comprising a track plate fixedly mounted below the main frame;

[0004] The pushing mechanism includes a sliding frame slidably mounted below the main frame, and a push plate module is provided on the sliding frame;

[0005] The cutting mechanism includes a track plate and a movable frame. The track plate is provided with a sliding groove. The movable frame is provided with a vibration module for adjusting the cutting speed according to the vibration degree of the cutting mechanism.

[0006] Furthermore, the clamping mechanism includes a clamping frame fixedly mounted on the main frame, a clamping electric cylinder fixedly mounted on the clamping frame, a sliding rod slidably mounted on the clamping frame, the sliding rod and the motor shaft of the clamping electric cylinder fixedly mounted, a column slidably mounted on the clamping frame, a clamping connecting rod rotatably mounted below the sliding rod, a lifting frame fixedly mounted below the column, and the clamping connecting rod rotatably mounted to the lifting frame.

[0007] Furthermore, a plurality of pressure columns are slidably mounted on the lifting frame, and a clamping spring is provided between the pressure columns and the lifting frame.

[0008] Furthermore, a side electric cylinder is fixedly installed under the main frame, a side clamp is slidably installed on the main frame, a side guide column is fixedly installed on the main frame, the side clamp and the side guide column are slidably installed, and the side clamp and the output end of the side electric cylinder are fixedly installed.

[0009] During use, several metal profiles are placed on the main frame. After the metal profiles are placed on the main frame, the push plate rises so that the ends of the metal profiles fit into the main frame to achieve positioning. The side electric cylinder contracts and drives the side clamps to slide inward along the side guide columns, so that the side clamps push several metal profiles toward the main frame to achieve positioning on both sides of the metal profiles. When cutting, the clamping electric cylinder contracts and drives the slide rod to slide along the clamping frame, and drives the lifting frame to descend through the clamping connecting rod. When the pressure column contacts the metal profile below it, the lifting frame continues to descend, and the pressure column and the lifting frame slide relative to each other, and the clamping spring is compressed, so as to achieve clamping of multiple metal profiles of different sizes and models.

[0010] Furthermore, the pushing mechanism also includes a pushing screw rotatably mounted on the main frame, a pushing guide column fixedly mounted on the main frame, the pushing screw and the motor shaft of the pushing motor fixedly mounted, the pushing guide column and the sliding frame slidingly mounted, and the sliding frame and the pushing screw form a threaded transmission.

[0011] Furthermore, the push plate module includes a lifting motor fixedly mounted on the sliding frame, a motor gear fixedly mounted on the motor shaft of the lifting motor, a sliding rack slidably mounted in the sliding frame, the motor gear is engaged with the sliding rack, two eccentric rotating blocks are rotatably mounted in the sliding frame, a rotating gear is fixedly mounted on the eccentric rotating block, the rotating gear is engaged with the sliding rack, a lifting connecting rod is rotatably mounted on the eccentric rotating block, a push plate is rotatably mounted on the lifting connecting rod, and the push plate is slidably mounted with the sliding frame.

[0012] When the metal profile is placed on the main frame, the lifting motor drives the motor gear to rotate, driving the sliding rack to slide along the sliding frame, thereby driving the rotating gear and the eccentric rotating block to rotate, and the push plate is driven up by the lifting connecting rod. At this time, the ends of all metal profiles are aligned with the push plate for positioning, and the pushing motor drives the pushing screw to rotate, thereby driving the sliding frame to slide along the pushing guide column, thereby pushing the metal profile forward through the push plate, so that the part of the metal profile that needs to be cut reaches under the cutting blade.

[0013] Furthermore, the cutting mechanism also includes a feed motor fixedly mounted below the main frame, a cutting screw is rotatably mounted below the main frame, the cutting screw is fixedly mounted to the motor shaft of the feed motor, a cutting slide rail is fixedly mounted below the main frame, a feed frame is slidably mounted on the cutting slide rail, the feed frame and the cutting screw form a threaded transmission, a sliding column is fixedly mounted below the feed frame, the movable frame is slidably mounted on the sliding column, the cutting motor is fixedly mounted on the movable frame, the motor shaft of the cutting motor is fixedly mounted, a rotating shaft is rotatably mounted in the movable frame, a rotating inner ring, a side bevel gear and a cutting blade are fixedly mounted on the rotating shaft, the side bevel gear is meshed with the output bevel gear, a guide wheel is rotatably mounted on the rotating shaft, a rotating outer ring is rotatably mounted on the outside of the rotating inner ring through a ball bearing, the guide wheel slides in the sliding groove, and when the movable frame rises along the sliding column, the cutting blade is located in the cutting groove.

[0014] Furthermore, the vibration module includes a vibration slide column slidably mounted on a movable frame, a vibration frame is fixedly mounted on the vibration slide column, a bonding wheel is rotatably mounted on the vibration frame, a vibration spring is arranged between the vibration frame and the movable frame, a vibration sensor is fixedly mounted on the movable frame, the bonding wheel is in contact with the rotating outer ring, the vibration sensor is electrically connected to the cutting motor, and the vibration sensor is electrically connected to the feed motor.

[0015] When not cutting, the cutting blade is located below the main frame to ensure the safety of the operator when placing the metal profile. When the metal profile reaches the specified position, the feed motor drives the cutting screw to rotate, driving the feed frame to slide along the cutting slide rail, and cooperating with the relative sliding of the movable frame and the lower sliding column, so that the guide wheel slides along the sliding groove, and the cutting blade gradually rises to exceed the upper surface of the main frame and extends from the cutting groove. The cutting motor drives the output bevel gear to rotate, thereby driving the side bevel gear, the rotating shaft, the cutting blade and the rotating inner ring to rotate, and the metal profile is cut by the cutting blade. At the same time, under the action of the guide wheel, the cutting blade moves along the cutting groove to achieve cutting of multiple metal profiles. At the same time, when the guide wheel moves along the sliding groove, if there is a large vibration, the rotating outer ring will push the vibration slide column and the vibration frame to vibrate up and down along the movable frame through the fitting wheel. The vibration is detected by the vibration sensor. When the vibration is too large, the speed of the cutting motor and the feed motor is reduced to improve the cutting stability and thus improve the cutting accuracy.

[0016] Compared with the prior art, the present invention has the following advantages: (1) the clamping mechanism provided in the present invention can effectively clamp the side and upper and lower surfaces of the metal profile, and position the metal profile through the push plate, so that the metal profile is accurately positioned when cutting, thereby improving the cutting accuracy of the metal profile; (2) if the cutting mechanism provided in the present invention vibrates when cutting the metal profile, the rotating outer ring will push the vibrating slide column and the vibrating frame to vibrate up and down along the movable frame through the fitting wheel, and the vibration is detected by the vibration sensor. When the vibration is too large, the speed of the cutting motor and the feed motor is reduced, the cutting stability is improved, and the cutting accuracy is further improved; (3) when the guide wheel provided in the present invention is located in the curved section of the sliding groove, the cutting blade is located below the main frame, and the operator will not be accidentally injured when placing the metal profile, and the safety is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 Schematic diagram of the clamping mechanism structure of the present invention Figure 1 .

[0019] Figure 3 Schematic diagram of the clamping mechanism structure of the present invention Figure 2 .

[0020] Figure 4 Schematic diagram of the driving mechanism structure of the present invention Figure 1 .

[0021] Figure 5 Schematic diagram of the driving mechanism structure of the present invention Figure 2 .

[0022] Figure 6 Schematic diagram of the driving mechanism structure of the present invention Figure 3 .

[0023] Figure 7 Schematic diagram of the cutting mechanism structure of the present invention Figure 1 .

[0024] Figure 8 Schematic diagram of the cutting mechanism structure of the present invention Figure 2 .

[0025] Figure 9 Schematic diagram of the cutting mechanism structure of the present invention Figure 3 .

[0026] Figure 10 Schematic diagram of the cutting mechanism structure of the present invention Figure 4 .

[0027] Figure 1: 101-main frame; 102-cutting groove; 103-clamping frame; 104-clamping electric cylinder; 105-sliding rod; 106-clamping connecting rod; 107-column; 108-lifting frame; 109-pressing column; 110-clamping spring; 111-side clamping plate; 112-side electric cylinder; 113-side guide column; 201-pushing motor; 202-pushing screw rod; 203-pushing guide column; 204-sliding frame; 205-lifting motor; 206-motor gear; 207-sliding rack; 208-eccentric rotating block; 209-rotating gear; 210-lifting connecting rod Rod; 211-push plate; 301-track plate; 302-sliding groove; 303-cutting slide rail; 304-cutting screw; 305-feed motor; 306-feed frame; 307-lower slide column; 308-movable frame; 309-cutting motor; 310-output bevel gear; 311-rotating shaft; 312-side bevel gear; 313-guide wheel; 314-cutting blade; 315-rotating outer ring; 316-rotating inner ring; 317-vibration slide column; 318-vibration spring; 319-vibration sensor; 320-vibration frame; 321-fitting wheel; 4-metal profile. DETAILED DESCRIPTION

[0028] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0029] Example: Reference Figures 1-10 A device for precisely cutting metal profiles includes a clamping mechanism for clamping a metal profile 4, the clamping mechanism including a main frame 101, the main frame 101 being provided with a cutting groove 102, the clamping mechanism being provided with a pushing mechanism for pushing the metal profile 4 to move and a cutting mechanism for cutting the metal profile 4, the pushing mechanism including a pushing motor 201, the pushing motor 201 being fixedly mounted on the main frame 101, and the cutting mechanism including a track plate 301, the track plate 301 being fixedly mounted below the main frame 101;

[0030] The pushing mechanism includes a sliding frame 204 slidably mounted below the main frame 101, and a push plate module is provided on the sliding frame 204;

[0031] The cutting mechanism includes a track plate 301 and a movable frame 308 . The track plate 301 is provided with a sliding slot 302 . The movable frame 308 is provided with a vibration module for adjusting the cutting speed according to the vibration degree of the cutting mechanism.

[0032] like Figure 2 、 Figure 3As shown, the clamping mechanism includes a clamping frame 103 fixedly mounted on the main frame 101, a clamping electric cylinder 104 fixedly mounted on the clamping frame 103, a slide rod 105 slidably mounted on the clamping frame 103, the slide rod 105 and the motor shaft of the clamping electric cylinder 104 are fixedly mounted, a column 107 is slidably mounted on the clamping frame 103, a clamping link 106 is rotatably mounted below the slide rod 105, a lifting frame 108 is fixedly mounted below the column 107, and the clamping link 106 is rotatably mounted on the lifting frame 108.

[0033] like Figure 2 、 Figure 3 As shown, a plurality of pressure columns 109 are slidably mounted on the lifting frame 108 , and a clamping spring 110 is provided between the pressure columns 109 and the lifting frame 108 .

[0034] like Figure 2 、 Figure 3 As shown, a side electric cylinder 112 is fixedly installed under the main frame 101, a side clamping plate 111 is slidably installed on the main frame 101, a side guide column 113 is fixedly installed on the main frame 101, the side clamping plate 111 and the side guide column 113 are slidably installed, and the side clamping plate 111 and the output end of the side electric cylinder 112 are fixedly installed.

[0035] When in use, several metal profiles 4 are placed on the main frame 101. After the metal profiles 4 are placed on the main frame 101, the push plate 211 rises so that the end of the metal profile 4 is in contact with the main frame 101 to achieve positioning. The side electric cylinder 112 contracts and drives the side clamping plate 111 to slide inward along the side guide column 113, so that the side clamping plate 111 pushes several metal profiles 4 toward the main frame 101 to achieve positioning on both sides of the metal profile 4. When cutting, the clamping electric cylinder 104 contracts and drives the sliding rod 105 to slide along the clamping frame 103, and drives the lifting frame 108 to descend through the clamping link 106. When the pressure column 109 contacts the metal profile 4 below it, the lifting frame 108 continues to descend, and the pressure column 109 and the lifting frame 108 slide relative to each other, and the clamping spring 110 is compressed to achieve clamping of multiple metal profiles 4 of different sizes and models.

[0036] like Figure 4-Figure 6 As shown, the pushing mechanism also includes a pushing screw 202 rotatably mounted on the main frame 101, a pushing guide column 203 is fixedly mounted on the main frame 101, the pushing screw 202 is fixedly mounted on the motor shaft of the pushing motor 201, the pushing guide column 203 is slidably mounted on the sliding frame 204, and the sliding frame 204 and the pushing screw 202 form a threaded transmission.

[0037] like Figure 4-Figure 6As shown, the push plate module includes a lifting motor 205 fixedly mounted on the sliding frame 204, a motor gear 206 fixedly mounted on the motor shaft of the lifting motor 205, a sliding rack 207 slidingly mounted in the sliding frame 204, the motor gear 206 engages with the sliding rack 207, two eccentric rotating blocks 208 are rotatably mounted in the sliding frame 204, a rotating gear 209 is fixedly mounted on the eccentric rotating block 208, the rotating gear 209 engages with the sliding rack 207, a lifting link 210 is rotatably mounted on the eccentric rotating block 208, a pushing plate 211 is rotatably mounted on the lifting link 210, and the pushing plate 211 is slidably mounted with the sliding frame 204.

[0038] When the metal profile 4 is placed on the main frame 101, the lifting motor 205 drives the motor gear 206 to rotate, driving the sliding rack 207 to slide along the sliding frame 204, thereby driving the rotating gear 209 and the eccentric rotating block 208 to rotate, and driving the push plate 211 to rise by lifting the connecting rod 210. At this time, the ends of all metal profiles 4 are aligned with the push plate 211 for positioning, and the pushing motor 201 drives the pushing screw 202 to rotate, thereby driving the sliding frame 204 to slide along the pushing guide column 203, thereby pushing the metal profile 4 forward through the push plate 211, so that the part of the metal profile 4 that needs to be cut reaches under the cutting blade 314.

[0039] like Figure 7-10 As shown, the cutting mechanism also includes a feed motor 305 fixedly mounted below the main frame 101, a cutting screw 304 is rotatably mounted below the main frame 101, the cutting screw 304 is fixedly mounted to the motor shaft of the feed motor 305, a cutting slide 303 is fixedly mounted below the main frame 101, a feed frame 306 is slidably mounted on the cutting slide 303, the feed frame 306 and the cutting screw 304 form a threaded transmission, a downward column 307 is fixedly mounted below the feed frame 306, a movable frame 308 is slidably mounted on the downward column 307, and a cutting motor 30 is fixedly mounted on the movable frame 308. 9. An output bevel gear 310 is fixedly mounted on the motor shaft of the cutting motor 309, and a rotating shaft 311 is rotatably mounted inside the movable frame 308. A rotating inner ring 316, a side bevel gear 312 and a cutting blade 314 are fixedly mounted on the rotating shaft 311. The side bevel gear 312 is engaged with the output bevel gear 310. A guide wheel 313 is rotatably mounted on the rotating shaft 311. A rotating outer ring 315 is rotatably mounted on the outside of the rotating inner ring 316 through a ball bearing. The guide wheel 313 slides in the sliding groove 302. When the movable frame 308 rises along the lower sliding column 307, the cutting blade 314 is located in the cutting groove 102.

[0040] like Figure 7-10As shown, the vibration module includes a vibration slide 317 slidably mounted on the movable frame 308, a vibration frame 320 is fixedly mounted on the vibration slide 317, a bonding wheel 321 is rotatably mounted on the vibration frame 320, a vibration spring 318 is arranged between the vibration frame 320 and the movable frame 308, a vibration sensor 319 is fixedly mounted on the movable frame 308, the bonding wheel 321 is in contact with the rotating outer ring 315, the vibration sensor 319 is electrically connected to the cutting motor 309, and the vibration sensor 319 is electrically connected to the feed motor 305.

[0041] When not cutting, the cutting blade 314 is located below the main frame 101 to ensure the safety of the operator when placing the metal profile 4. When the metal profile 4 reaches the specified position, the feed motor 305 drives the cutting screw 304 to rotate, driving the feed frame 306 to slide along the cutting slide rail 303, coordinating the relative sliding of the movable frame 308 and the lower slide column 307, so that the guide wheel 313 slides along the sliding groove 302, and the cutting blade 314 gradually rises to exceed the upper surface of the main frame 101 and extends from the cutting groove 102. The cutting motor 309 drives the output bevel gear 310 to rotate, thereby driving the side bevel gear 312, the rotating shaft 311, and the cutting blade 314 and the rotating inner ring 316 rotate, and the metal profile 4 is cut by the cutting blade 314. At the same time, under the action of the guide wheel 313, the cutting blade 314 moves along the cutting groove 102 to achieve the cutting of multiple metal profiles 4. At the same time, when the guide wheel 313 moves along the sliding groove 302, if a large vibration occurs, the rotating outer ring 315 will push the vibrating slide 317 and the vibrating frame 320 to vibrate up and down along the movable frame 308 through the fitting wheel 321, and the vibration is detected by the vibration sensor 319. When the vibration is too large, the speed of the cutting motor 309 and the feed motor 305 is reduced to improve the cutting stability and thus improve the cutting accuracy.

[0042] The working principle of a metal profile precision cutting device disclosed in the present invention is as follows: when in use, a number of metal profiles 4 are placed on the main frame 101. After the metal profiles 4 are placed on the main frame 101, the push plate 211 is raised so that the end of the metal profile 4 is in contact with the main frame 101 to achieve positioning. The side electric cylinder 112 contracts and drives the side clamping plate 111 to slide inward along the side guide column 113, so that the side clamping plate 111 pushes the several metal profiles 4 toward the main frame 101 to achieve positioning on both sides of the metal profile 4. When cutting, the clamping electric cylinder 104 contracts and drives the sliding rod 105 to slide along the clamping frame 103, and drives the lifting frame 108 to descend through the clamping connecting rod 106. When the pressure column 109 contacts the metal profile 4 below it, the lifting frame 108 continues to descend, and the pressure column 109 and the lifting frame 108 slide relative to each other, and the clamping spring 110 is compressed. , it is possible to clamp multiple metal profiles 4 of different sizes and models. When not cutting, the cutting blade 314 is located below the main frame 101 to ensure the safety of the operator when placing the metal profile 4. After the metal profile 4 is placed on the main frame 101, the lifting motor 205 drives the motor gear 206 to rotate, driving the sliding rack 207 to slide along the sliding frame 204, thereby driving the rotating gear 209 and the eccentric rotating block 208 to rotate, and driving the push plate 211 to rise through the lifting connecting rod 210. At this time, the ends of all metal profiles 4 are aligned with the push plate 211 for positioning, and the pushing motor 201 drives the pushing screw 202 to rotate, thereby driving the sliding frame 204 to slide along the pushing guide column 203, thereby pushing the metal profile 4 forward through the push plate 211, so that the part of the metal profile 4 that needs to be cut reaches below the cutting blade 314. The feed motor 305 drives the cutting screw 304 to rotate, drives the feed frame 306 to slide along the cutting slide rail 303, cooperates with the relative sliding of the movable frame 308 and the lower slide post 307, causes the guide wheel 313 to slide along the sliding groove 302, and the cutting blade 314 gradually rises to exceed the upper surface of the main frame 101 and extends from the cutting groove 102. The cutting motor 309 drives the output bevel gear 310 to rotate, thereby driving the side bevel gear 312, the rotating shaft 311, the cutting blade 314 and the rotating inner ring 316 to rotate, and the metal profile 4 is cut by the cutting blade 314. Cutting is performed, and at the same time, under the action of the guide wheel 313, the cutting blade 314 moves along the cutting groove 102 to achieve the cutting of multiple metal profiles 4. At the same time, when the guide wheel 313 moves along the sliding groove 302, if there is a large vibration, the rotating outer ring 315 will push the vibration slide 317 and the vibration frame 320 to vibrate up and down along the movable frame 308 through the fitting wheel 321, and the vibration is detected by the vibration sensor 319. When the vibration is too large, the speed of the cutting motor 309 and the feed motor 305 is reduced to improve the cutting stability and thus improve the cutting accuracy.

[0043] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and inventive concept of the present invention within the technical scope of the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A metal profile precision cutting device, comprising a clamping mechanism for clamping a metal profile (4), characterized in that: The clamping mechanism includes a main frame (101), the main frame (101) is provided with a cutting groove (102), the clamping mechanism is provided with a pushing mechanism for pushing the metal profile (4) to move and a cutting mechanism for cutting the metal profile (4), the pushing mechanism includes a pushing motor (201), the pushing motor (201) is fixedly mounted on the main frame (101), and the cutting mechanism includes a track plate (301), the track plate (301) is fixedly mounted below the main frame (101); The pushing mechanism comprises a sliding frame (204) slidably mounted below the main frame (101), and a push plate module is provided on the sliding frame (204); The cutting mechanism comprises a track plate (301) and a movable frame (308), the track plate (301) is provided with a sliding groove (302), and the movable frame (308) is provided with a vibration module for adjusting the cutting speed according to the vibration degree of the cutting mechanism; The clamping mechanism comprises a clamping frame (103) fixedly mounted on the main frame (101), a clamping electric cylinder (104) fixedly mounted on the clamping frame (103), a slide rod (105) slidably mounted on the clamping frame (103), the slide rod (105) and the motor shaft of the clamping electric cylinder (104) fixedly mounted, a column (107) slidably mounted on the clamping frame (103), a clamping connecting rod (106) rotatably mounted below the slide rod (105), a lifting frame (108) fixedly mounted below the column (107), and the clamping connecting rod (106) and the lifting frame (108) rotatably mounted; A side electric cylinder (112) is fixedly installed below the main frame (101), a side clamping plate (111) is slidably installed on the main frame (101), a side guide column (113) is fixedly installed on the main frame (101), the side clamping plate (111) and the side guide column (113) are slidably installed, and the side clamping plate (111) and the output end of the side electric cylinder (112) are fixedly installed; The pushing mechanism further comprises a pushing screw (202) rotatably mounted on the main frame (101), a pushing guide column (203) fixedly mounted on the main frame (101), the pushing screw (202) being fixedly mounted on the motor shaft of the pushing motor (201), the pushing guide column (203) being slidably mounted on the sliding frame (204), and the sliding frame (204) and the pushing screw (202) forming a threaded transmission; The push plate module comprises a lifting motor (205) fixedly mounted on a sliding frame (204); a motor gear (206) fixedly mounted on a motor shaft of the lifting motor (205); a sliding rack (207) slidably mounted in the sliding frame (204); the motor gear (206) meshes with the sliding rack (207); two eccentric rotating blocks (208) are rotatably mounted in the sliding frame (204); a rotating gear (209) is fixedly mounted on the eccentric rotating block (208); the rotating gear (209) meshes with the sliding rack (207); a lifting connecting rod (210) is rotatably mounted on the eccentric rotating block (208); a pushing plate (211) is rotatably mounted on the lifting connecting rod (210); and the pushing plate (211) is slidably mounted on the sliding frame (204).

2. The metal profile precision cutting device according to claim 1, characterized in that: A plurality of pressure columns (109) are slidably mounted on the lifting frame (108), and a clamping spring (110) is provided between the pressure columns (109) and the lifting frame (108).

3. The metal profile precision cutting device according to claim 1, characterized in that: The cutting mechanism also includes a feed motor (305) fixedly mounted below the main frame (101), a cutting screw (304) rotatably mounted below the main frame (101), the cutting screw (304) and the motor shaft of the feed motor (305) fixedly mounted, a cutting slide rail (303) fixedly mounted below the main frame (101), a feed frame (306) slidably mounted on the cutting slide rail (303), the feed frame (306) and the cutting screw (304) forming a threaded transmission, a downward column (307) fixedly mounted below the feed frame (306), a movable frame (308) slidably mounted on the downward column (307), a cutting motor (309) fixedly mounted on the movable frame (308), and a cutting mechanism (305) fixedly mounted below the main frame (101). An output bevel gear (310) is fixedly mounted on the motor shaft of the cutting motor (309), a rotating shaft (311) is rotatably mounted in the movable frame (308), a rotating inner ring (316), a side bevel gear (312) and a cutting blade (314) are fixedly mounted on the rotating shaft (311), the side bevel gear (312) is meshed with the output bevel gear (310), a guide wheel (313) is rotatably mounted on the rotating shaft (311), a rotating outer ring (315) is rotatably mounted on the outer side of the rotating inner ring (316) via a ball bearing, and the guide wheel (313) slides in the sliding groove (302). When the movable frame (308) rises along the lower slide column (307), the cutting blade (314) is located in the cutting groove (102).

4. The metal profile precision cutting device according to claim 3, characterized in that: The vibration module includes a vibration slide (317) slidably mounted on a movable frame (308), a vibration frame (320) fixedly mounted on the vibration slide (317), a fitting wheel (321) rotatably mounted on the vibration frame (320), a vibration spring (318) provided between the vibration frame (320) and the movable frame (308), a vibration sensor (319) fixedly mounted on the movable frame (308), the fitting wheel (321) in contact with the rotating outer ring (315), the vibration sensor (319) electrically connected to the cutting motor (309), and the vibration sensor (319) electrically connected to the feed motor (305).

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